From ed0033984bc6dbfc4a864d454f3e606978c5cc2b Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Sun, 1 May 2022 23:02:05 -0400 Subject: [PATCH 1/7] Generate flag types (again?) Closes #1381 --- .github/workflows/cli.yml | 5 + Makefile | 40 ++ cli.go | 2 +- docs/CONTRIBUTING.md | 116 +++++- flag-spec.yaml | 50 +++ flag.go | 2 +- flag_bool.go | 31 -- flag_duration.go | 31 -- flag_float64.go | 31 -- flag_float64_slice.go | 24 -- flag_generic.go | 31 -- flag_int.go | 31 -- flag_int64.go | 31 -- flag_int64_slice.go | 24 -- flag_int_slice.go | 24 -- flag_path.go | 31 +- flag_string.go | 32 -- flag_string_slice.go | 26 -- flag_timestamp.go | 32 -- flag_uint.go | 31 -- flag_uint64.go | 31 -- go.mod | 1 + go.sum | 4 +- internal/build/build.go | 131 +++--- internal/genflags/cmd/genflags/main.go | 161 ++++++++ internal/genflags/generated.gotmpl | 53 +++ internal/genflags/generated_test.gotmpl | 22 + internal/genflags/package.go | 34 ++ internal/genflags/package_test.go | 41 ++ internal/genflags/spec.go | 100 +++++ zz_generated.flags.go | 507 ++++++++++++++++++++++++ zz_generated.flags_test.go | 116 ++++++ 32 files changed, 1307 insertions(+), 519 deletions(-) create mode 100644 Makefile create mode 100644 flag-spec.yaml create mode 100644 internal/genflags/cmd/genflags/main.go create mode 100644 internal/genflags/generated.gotmpl create mode 100644 internal/genflags/generated_test.gotmpl create mode 100644 internal/genflags/package.go create mode 100644 internal/genflags/package_test.go create mode 100644 internal/genflags/spec.go create mode 100644 zz_generated.flags.go create mode 100644 zz_generated.flags_test.go diff --git a/.github/workflows/cli.yml b/.github/workflows/cli.yml index c60ed4c2fa..84f9cae01d 100644 --- a/.github/workflows/cli.yml +++ b/.github/workflows/cli.yml @@ -87,3 +87,8 @@ jobs: - name: toc run: go run internal/build/build.go toc docs/v2/manual.md + + - name: diff check + run: | + git diff --exit-code + git diff --cached --exit-code diff --git a/Makefile b/Makefile new file mode 100644 index 0000000000..dd6893a473 --- /dev/null +++ b/Makefile @@ -0,0 +1,40 @@ +# NOTE: this Makefile is meant to provide a simplified entry point for humans to +# run all of the critical steps to verify one's changes are harmonious in +# nature. Keeping target bodies to one line each and abstaining from make magic +# are very important so that maintainers and contributors can focus their +# attention on files that are primarily Go. + +.PHONY: all +all: generate lint tag-test test check-bin tag-check-bin gfmrun toc + +.PHONY: generate +generate: + go run internal/build/build.go generate + +.PHONY: lint +lint: + go run internal/build/build.go vet + +.PHONY: tag-test +tag-test: + go run internal/build/build.go -tags urfave_cli_no_docs test + +.PHONY: test +test: + go run internal/build/build.go test + +.PHONY: check-bin +check-bin: + go run internal/build/build.go check-binary-size + +.PHONY: tag-check-bin +tag-check-bin: + go run internal/build/build.go -tags urfave_cli_no_docs check-binary-size + +.PHONY: gfmrun +gfmrun: + go run internal/build/build.go gfmrun docs/v2/manual.md + +.PHONY: toc +toc: + go run internal/build/build.go toc docs/v2/manual.md diff --git a/cli.go b/cli.go index 62a5bc22d2..2a11c5ad49 100644 --- a/cli.go +++ b/cli.go @@ -20,4 +20,4 @@ // } package cli -//go:generate go run flag-gen/main.go flag-gen/assets_vfsdata.go +//go:generate go run internal/genflags/cmd/genflags/main.go diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md index 41671a9703..88c6b95534 100644 --- a/docs/CONTRIBUTING.md +++ b/docs/CONTRIBUTING.md @@ -1,18 +1,102 @@ ## Contributing -Use @urfave/cli to ping the maintainers. - -Feel free to put up a pull request to fix a bug or maybe add a feature. We will -give it a code review and make sure that it does not break backwards -compatibility. If collaborators agree that it is in line with -the vision of the project, we will work with you to get the code into -a mergeable state and merge it into the main branch. - -If you have contributed something significant to the project, we will most -likely add you as a collaborator. As a collaborator you are given the ability -to merge others pull requests. It is very important that new code does not -break existing code, so be careful about what code you do choose to merge. - -If you feel like you have contributed to the project but have not yet been added -as a collaborator, we probably forgot to add you :sweat_smile:. Please open an -issue! +Welcome to the `urfave/cli` contributor docs! This goal of this document is to help those +interested in joining the 200+ humans who have contributed to this project over the years. + +> As a general guiding principle, the current maintainers may be notified via the +> @urfave/cli GitHub team. + +All of the current maintainers are *volunteers* who live in various timezones with +different scheduling needs, so please understand that your contribution or question may +not get a response for many days. + +### semantic versioning adherence + +The `urfave/cli` project strives to strictly adhere to semantic versioning. The active +development branches and the milestones and import paths to which they correspond are: + +#### `main` branch + + + +The majority of active development and issue management is targeting the `main` branch, +which **MUST** *only* receive bug fixes and feature *additions*. + +- :arrow_right: [`v2.x`](https://github.com/urfave/cli/milestone/16) +- :arrow_right: `github.com/urfave/cli/v2` + +#### `v1` branch + + + +The `v1` branch **MUST** only receive bug fixes in the `v1.22.x` series. There is no +strict rule regarding bug fixes to the `v2.x` series being backported to the `v1.22.x` +series. + +- :arrow_right: [`v1.22.x`](https://github.com/urfave/cli/milestone/11) +- :arrow_right: `github.com/urfave/cli` + +#### `v3-dev-main` branch + + + +The `v3-dev-branch` **MUST** receive all bug fixes and features added to the `main` branch +and **MAY** receive feature *removals* and other changes that are otherwise +*backward-incompatible* with the `v2.x` series. + +- :arrow_right: [`v3.x`](https://github.com/urfave/cli/milestone/5) +- unreleased / unsupported + +### development workflow + +Most of the tooling around the development workflow strives for effective +[dogfooding](https://en.wikipedia.org/wiki/Eating_your_own_dog_food). There is a top-level +`Makefile` that is maintained strictly for the purpose of easing verification of one's +development environment and any changes one may have introduced: + +```sh +make +``` + +Running the default `make` target (`all`) will ensure all of the critical steps are run to +verify one's changes are harmonious in nature. The same steps are also run during the +[continuous integration +phase](https://github.com/urfave/cli/blob/main/.github/workflows/cli.yml). + +#### generated code + +A significant portion of the project's source code is generated, with the goal being to +eliminate repetetive maintenance where other type-safe abstraction is impractical or +impossible with Go versions `< 1.18`. In a future where the eldest Go version supported is +`1.18.x`, there will likely be efforts to take advantage of +[generics](https://go.dev/doc/tutorial/generics). + +The built-in `go generate` command is used to run the commands specified in +`//go:generate` directives. Each such command runs a file that also supports a command +line help system which may be consulted for further information, e.g.: + +```sh +go run internal/genflags/cmd/genflags/main.go --help +``` + +### pull requests + +Please feel free to open a pull request to fix a bug or add a feature. The @urfave/cli +team will review it as soon as possible, giving special attention to maintaining backward +compatibility. If the @urfave/cli team agrees that your contribution is in line with the +vision of the project, they will work with you to get the code into a mergeable state, +merged, and then released. + +### granting of commit bit / admin mode + +Those with a history of contributing to this project will likely be invited to join the +@urfave/cli team. As a member of the @urfave/cli team, you will have the ability to fully +administer pull requests, issues, and other repository bits. + +If you feel that you should be a member of the @urfave/cli team but have not yet been +added, the most likely explanation is that this is an accidental oversight! :sweat_smile:. +Please open an issue! + + diff --git a/flag-spec.yaml b/flag-spec.yaml new file mode 100644 index 0000000000..d85fa30bd1 --- /dev/null +++ b/flag-spec.yaml @@ -0,0 +1,50 @@ +# NOTE: this file is used by the tool defined in +# ./internal/genflags/cmd/genflags/main.go which uses the +# `genflags.Spec` type that maps to this file structure. + +flag_types: + bool: {} + float64: {} + int64: {} + int: {} + time.Duration: {} + uint64: {} + uint: {} + + string: + struct_fields: + - { name: TakesFile, type: bool } + Generic: + struct_fields: + - { name: TakesFile, type: bool } + Path: + struct_fields: + - { name: TakesFile, type: bool } + + Float64Slice: + value_pointer: true + skip_interfaces: + - fmt.Stringer + Int64Slice: + value_pointer: true + skip_interfaces: + - fmt.Stringer + IntSlice: + value_pointer: true + skip_interfaces: + - fmt.Stringer + StringSlice: + value_pointer: true + skip_interfaces: + - fmt.Stringer + struct_fields: + - { name: TakesFile, type: bool } + Timestamp: + value_pointer: true + struct_fields: + - { name: Layout, type: string } + + # TODO: enable UintSlice + # UintSlice: {} + # TODO: enable Uint64Slice once #1334 lands + # Uint64Slice: {} diff --git a/flag.go b/flag.go index d2a33f01f9..0c61d002a0 100644 --- a/flag.go +++ b/flag.go @@ -258,7 +258,7 @@ func withEnvHint(envVars []string, str string) string { return str + envText } -func flagNames(name string, aliases []string) []string { +func FlagNames(name string, aliases []string) []string { var ret []string for _, part := range append([]string{name}, aliases...) { diff --git a/flag_bool.go b/flag_bool.go index 018f9afccd..f984acfc2f 100644 --- a/flag_bool.go +++ b/flag_bool.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// BoolFlag is a flag with type bool -type BoolFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value bool - DefaultText string - Destination *bool - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *BoolFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *BoolFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *BoolFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *BoolFlag) IsRequired() bool { return f.Required diff --git a/flag_duration.go b/flag_duration.go index 9c6dde7b9e..a6677ad288 100644 --- a/flag_duration.go +++ b/flag_duration.go @@ -6,37 +6,6 @@ import ( "time" ) -// DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration) -type DurationFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value time.Duration - DefaultText string - Destination *time.Duration - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *DurationFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *DurationFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *DurationFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *DurationFlag) IsRequired() bool { return f.Required diff --git a/flag_float64.go b/flag_float64.go index 62fdb13a48..62a1973007 100644 --- a/flag_float64.go +++ b/flag_float64.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// Float64Flag is a flag with type float64 -type Float64Flag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value float64 - DefaultText string - Destination *float64 - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *Float64Flag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *Float64Flag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *Float64Flag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *Float64Flag) IsRequired() bool { return f.Required diff --git a/flag_float64_slice.go b/flag_float64_slice.go index 8be586c40e..0f09c8cfe3 100644 --- a/flag_float64_slice.go +++ b/flag_float64_slice.go @@ -75,36 +75,12 @@ func (f *Float64Slice) Get() interface{} { return *f } -// Float64SliceFlag is a flag with type *Float64Slice -type Float64SliceFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value *Float64Slice - DefaultText string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *Float64SliceFlag) IsSet() bool { - return f.HasBeenSet -} - // String returns a readable representation of this value // (for usage defaults) func (f *Float64SliceFlag) String() string { return withEnvHint(f.GetEnvVars(), stringifyFloat64SliceFlag(f)) } -// Names returns the names of the flag -func (f *Float64SliceFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *Float64SliceFlag) IsRequired() bool { return f.Required diff --git a/flag_generic.go b/flag_generic.go index ae594d4d84..71e7173166 100644 --- a/flag_generic.go +++ b/flag_generic.go @@ -11,37 +11,6 @@ type Generic interface { String() string } -// GenericFlag is a flag with type Generic -type GenericFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - TakesFile bool - Value Generic - DefaultText string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *GenericFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *GenericFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *GenericFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *GenericFlag) IsRequired() bool { return f.Required diff --git a/flag_int.go b/flag_int.go index 63ec9a48df..b68c3e86e3 100644 --- a/flag_int.go +++ b/flag_int.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// IntFlag is a flag with type int -type IntFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value int - DefaultText string - Destination *int - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *IntFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *IntFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *IntFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *IntFlag) IsRequired() bool { return f.Required diff --git a/flag_int64.go b/flag_int64.go index 929e2d8d94..3f71134bcc 100644 --- a/flag_int64.go +++ b/flag_int64.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// Int64Flag is a flag with type int64 -type Int64Flag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value int64 - DefaultText string - Destination *int64 - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *Int64Flag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *Int64Flag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *Int64Flag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *Int64Flag) IsRequired() bool { return f.Required diff --git a/flag_int64_slice.go b/flag_int64_slice.go index 08f03ddfbe..14d8c41c6a 100644 --- a/flag_int64_slice.go +++ b/flag_int64_slice.go @@ -76,36 +76,12 @@ func (i *Int64Slice) Get() interface{} { return *i } -// Int64SliceFlag is a flag with type *Int64Slice -type Int64SliceFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value *Int64Slice - DefaultText string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *Int64SliceFlag) IsSet() bool { - return f.HasBeenSet -} - // String returns a readable representation of this value // (for usage defaults) func (f *Int64SliceFlag) String() string { return withEnvHint(f.GetEnvVars(), stringifyInt64SliceFlag(f)) } -// Names returns the names of the flag -func (f *Int64SliceFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *Int64SliceFlag) IsRequired() bool { return f.Required diff --git a/flag_int_slice.go b/flag_int_slice.go index e5b9e21e5e..4ed7f2c59e 100644 --- a/flag_int_slice.go +++ b/flag_int_slice.go @@ -87,36 +87,12 @@ func (i *IntSlice) Get() interface{} { return *i } -// IntSliceFlag is a flag with type *IntSlice -type IntSliceFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value *IntSlice - DefaultText string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *IntSliceFlag) IsSet() bool { - return f.HasBeenSet -} - // String returns a readable representation of this value // (for usage defaults) func (f *IntSliceFlag) String() string { return withEnvHint(f.GetEnvVars(), stringifyIntSliceFlag(f)) } -// Names returns the names of the flag -func (f *IntSliceFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *IntSliceFlag) IsRequired() bool { return f.Required diff --git a/flag_path.go b/flag_path.go index a7a213e877..095a59648a 100644 --- a/flag_path.go +++ b/flag_path.go @@ -5,36 +5,7 @@ import ( "fmt" ) -type PathFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - TakesFile bool - Value string - DefaultText string - Destination *string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *PathFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *PathFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *PathFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} +type Path = string // IsRequired returns whether or not the flag is required func (f *PathFlag) IsRequired() bool { diff --git a/flag_string.go b/flag_string.go index 0365762d64..4831c17959 100644 --- a/flag_string.go +++ b/flag_string.go @@ -5,38 +5,6 @@ import ( "fmt" ) -// StringFlag is a flag with type string -type StringFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - TakesFile bool - Value string - DefaultText string - Destination *string - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *StringFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *StringFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *StringFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *StringFlag) IsRequired() bool { return f.Required diff --git a/flag_string_slice.go b/flag_string_slice.go index 82aa1a492c..9e69d0008b 100644 --- a/flag_string_slice.go +++ b/flag_string_slice.go @@ -70,38 +70,12 @@ func (s *StringSlice) Get() interface{} { return *s } -// StringSliceFlag is a flag with type *StringSlice -type StringSliceFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - TakesFile bool - Value *StringSlice - DefaultText string - HasBeenSet bool - Destination *StringSlice -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *StringSliceFlag) IsSet() bool { - return f.HasBeenSet -} - // String returns a readable representation of this value // (for usage defaults) func (f *StringSliceFlag) String() string { return withEnvHint(f.GetEnvVars(), stringifyStringSliceFlag(f)) } -// Names returns the names of the flag -func (f *StringSliceFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *StringSliceFlag) IsRequired() bool { return f.Required diff --git a/flag_timestamp.go b/flag_timestamp.go index 7bda8ee221..32899f5321 100644 --- a/flag_timestamp.go +++ b/flag_timestamp.go @@ -58,38 +58,6 @@ func (t *Timestamp) Get() interface{} { return *t } -// TimestampFlag is a flag with type time -type TimestampFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Layout string - Value *Timestamp - DefaultText string - HasBeenSet bool - Destination *Timestamp -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *TimestampFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *TimestampFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *TimestampFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *TimestampFlag) IsRequired() bool { return f.Required diff --git a/flag_uint.go b/flag_uint.go index 0fd0777d73..625f11c15d 100644 --- a/flag_uint.go +++ b/flag_uint.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// UintFlag is a flag with type uint -type UintFlag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value uint - DefaultText string - Destination *uint - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *UintFlag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *UintFlag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *UintFlag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *UintFlag) IsRequired() bool { return f.Required diff --git a/flag_uint64.go b/flag_uint64.go index c8314ac00f..58969a5d13 100644 --- a/flag_uint64.go +++ b/flag_uint64.go @@ -6,37 +6,6 @@ import ( "strconv" ) -// Uint64Flag is a flag with type uint64 -type Uint64Flag struct { - Name string - Aliases []string - Usage string - EnvVars []string - FilePath string - Required bool - Hidden bool - Value uint64 - DefaultText string - Destination *uint64 - HasBeenSet bool -} - -// IsSet returns whether or not the flag has been set through env or file -func (f *Uint64Flag) IsSet() bool { - return f.HasBeenSet -} - -// String returns a readable representation of this value -// (for usage defaults) -func (f *Uint64Flag) String() string { - return FlagStringer(f) -} - -// Names returns the names of the flag -func (f *Uint64Flag) Names() []string { - return flagNames(f.Name, f.Aliases) -} - // IsRequired returns whether or not the flag is required func (f *Uint64Flag) IsRequired() bool { return f.Required diff --git a/go.mod b/go.mod index 7a4b88bbf0..3455d264f4 100644 --- a/go.mod +++ b/go.mod @@ -5,6 +5,7 @@ go 1.18 require ( github.com/BurntSushi/toml v1.1.0 github.com/cpuguy83/go-md2man/v2 v2.0.1 + golang.org/x/text v0.3.7 gopkg.in/yaml.v2 v2.4.0 ) diff --git a/go.sum b/go.sum index bde502bd2e..a96d8e78ef 100644 --- a/go.sum +++ b/go.sum @@ -1,11 +1,11 @@ -github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ= -github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v1.1.0 h1:ksErzDEI1khOiGPgpwuI7x2ebx/uXQNw7xJpn9Eq1+I= github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= github.com/cpuguy83/go-md2man/v2 v2.0.1 h1:r/myEWzV9lfsM1tFLgDyu0atFtJ1fXn261LKYj/3DxU= github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk= github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= +golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk= +golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= diff --git a/internal/build/build.go b/internal/build/build.go index dec0dfb64f..0e9391b4fb 100644 --- a/internal/build/build.go +++ b/internal/build/build.go @@ -6,7 +6,6 @@ import ( "bufio" "bytes" "fmt" - "io/ioutil" "log" "math" "os" @@ -16,9 +15,18 @@ import ( "github.com/urfave/cli/v2" ) -var packages = []string{"cli", "altsrc"} - func main() { + top, err := func() (string, error) { + if v, err := sh("git", "rev-parse", "--show-toplevel"); err == nil { + return strings.TrimSpace(v), nil + } + + return os.Getwd() + }() + if err != nil { + log.Fatal(err) + } + app := cli.NewApp() app.Name = "builder" @@ -45,20 +53,41 @@ func main() { Name: "check-binary-size", Action: checkBinarySizeActionFunc, }, + { + Name: "generate", + Action: GenerateActionFunc, + }, } app.Flags = []cli.Flag{ &cli.StringFlag{ Name: "tags", Usage: "set build tags", }, + &cli.PathFlag{ + Name: "top", + Value: top, + }, + &cli.StringSliceFlag{ + Name: "packages", + Value: cli.NewStringSlice("cli", "altsrc", "internal/build", "internal/genflags"), + }, } - err := app.Run(os.Args) - if err != nil { + if err := app.Run(os.Args); err != nil { log.Fatal(err) } } +func sh(exe string, args ...string) (string, error) { + cmd := exec.Command(exe, args...) + cmd.Stdin = os.Stdin + cmd.Stderr = os.Stderr + + fmt.Fprintf(os.Stderr, "# ---> %s\n", cmd) + outBytes, err := cmd.Output() + return string(outBytes), err +} + func runCmd(arg string, args ...string) error { cmd := exec.Command(arg, args...) @@ -66,78 +95,63 @@ func runCmd(arg string, args ...string) error { cmd.Stdout = os.Stdout cmd.Stderr = os.Stderr + fmt.Fprintf(os.Stderr, "# ---> %s\n", cmd) return cmd.Run() } -func VetActionFunc(_ *cli.Context) error { - return runCmd("go", "vet") +func VetActionFunc(cCtx *cli.Context) error { + return runCmd("go", "vet", cCtx.Path("top")+"/...") } func TestActionFunc(c *cli.Context) error { tags := c.String("tags") - for _, pkg := range packages { - var packageName string + for _, pkg := range c.StringSlice("packages") { + packageName := "github.com/urfave/cli/v2" - if pkg == "cli" { - packageName = "github.com/urfave/cli/v2" - } else { + if pkg != "cli" { packageName = fmt.Sprintf("github.com/urfave/cli/v2/%s", pkg) } - coverProfile := fmt.Sprintf("--coverprofile=%s.coverprofile", pkg) - - err := runCmd("go", "test", "-tags", tags, "-v", coverProfile, packageName) - if err != nil { + if err := runCmd( + "go", "test", + "-tags", tags, + "-v", + "--coverprofile", pkg+".coverprofile", + "--covermode", "count", + "--cover", packageName, + packageName, + ); err != nil { return err } } - return testCleanup() + return testCleanup(c.StringSlice("packages")) } -func testCleanup() error { - var out bytes.Buffer +func testCleanup(packages []string) error { + out := &bytes.Buffer{} + + fmt.Fprintf(out, "mode: count\n") for _, pkg := range packages { - file, err := os.Open(fmt.Sprintf("%s.coverprofile", pkg)) - if err != nil { - return err - } + filename := pkg + ".coverprofile" - b, err := ioutil.ReadAll(file) + lineBytes, err := os.ReadFile(filename) if err != nil { return err } - out.Write(b) - err = file.Close() - if err != nil { - return err - } + lines := strings.Split(string(lineBytes), "\n") - err = os.Remove(fmt.Sprintf("%s.coverprofile", pkg)) - if err != nil { + fmt.Fprintf(out, strings.Join(lines[1:], "\n")) + + if err := os.Remove(filename); err != nil { return err } } - outFile, err := os.Create("coverage.txt") - if err != nil { - return err - } - - _, err = out.WriteTo(outFile) - if err != nil { - return err - } - - err = outFile.Close() - if err != nil { - return err - } - - return nil + return os.WriteFile("coverage.txt", out.Bytes(), 0644) } func GfmrunActionFunc(c *cli.Context) error { @@ -179,17 +193,7 @@ func TocActionFunc(c *cli.Context) error { filename = "README.md" } - err := runCmd("markdown-toc", "-i", filename) - if err != nil { - return err - } - - err = runCmd("git", "diff", "--exit-code") - if err != nil { - return err - } - - return nil + return runCmd("markdown-toc", "-i", filename) } // checkBinarySizeActionFunc checks the size of an example binary to ensure that we are keeping size down @@ -201,7 +205,6 @@ func checkBinarySizeActionFunc(c *cli.Context) (err error) { cliBuiltFilePath = "./internal/example-cli/built-example" helloSourceFilePath = "./internal/example-hello-world/example-hello-world.go" helloBuiltFilePath = "./internal/example-hello-world/built-example" - desiredMinBinarySize = 1.675 desiredMaxBinarySize = 2.2 badNewsEmoji = "🚨" goodNewsEmoji = "✨" @@ -209,8 +212,14 @@ func checkBinarySizeActionFunc(c *cli.Context) (err error) { mbStringFormatter = "%.1fMB" ) + desiredMinBinarySize := 1.675 + tags := c.String("tags") + if strings.Contains(tags, "urfave_cli_no_docs") { + desiredMinBinarySize = 1.39 + } + // get cli example size cliSize, err := getSize(cliSourceFilePath, cliBuiltFilePath, tags) if err != nil { @@ -280,6 +289,10 @@ func checkBinarySizeActionFunc(c *cli.Context) (err error) { return nil } +func GenerateActionFunc(cCtx *cli.Context) error { + return runCmd("go", "generate", cCtx.Path("top")+"/...") +} + func getSize(sourcePath string, builtPath string, tags string) (size int64, err error) { // build example binary err = runCmd("go", "build", "-tags", tags, "-o", builtPath, "-ldflags", "-s -w", sourcePath) diff --git a/internal/genflags/cmd/genflags/main.go b/internal/genflags/cmd/genflags/main.go new file mode 100644 index 0000000000..f4aaeba15e --- /dev/null +++ b/internal/genflags/cmd/genflags/main.go @@ -0,0 +1,161 @@ +package main + +import ( + "bytes" + "context" + _ "embed" + "log" + "os" + "os/exec" + "os/signal" + "path/filepath" + "strings" + "syscall" + "text/template" + + "github.com/urfave/cli/v2" + "github.com/urfave/cli/v2/internal/genflags" + "gopkg.in/yaml.v2" +) + +const ( + defaultPackageName = "cli" +) + +func sh(ctx context.Context, exe string, args ...string) (string, error) { + cmd := exec.CommandContext(ctx, exe, args...) + cmd.Stderr = os.Stderr + outBytes, err := cmd.Output() + return string(outBytes), err +} + +func main() { + ctx, stop := signal.NotifyContext(context.Background(), syscall.SIGINT, syscall.SIGTERM) + defer stop() + + top := "../../" + if v, err := sh(ctx, "git", "rev-parse", "--show-toplevel"); err == nil { + top = strings.TrimSpace(v) + } + + app := &cli.App{ + Flags: []cli.Flag{ + &cli.PathFlag{ + Name: "flag-spec-yaml", + Aliases: []string{"f"}, + Value: filepath.Join(top, "flag-spec.yaml"), + }, + &cli.PathFlag{ + Name: "generated-output", + Aliases: []string{"o"}, + Value: filepath.Join(top, "zz_generated.flags.go"), + }, + &cli.PathFlag{ + Name: "generated-test-output", + Aliases: []string{"t"}, + Value: filepath.Join(top, "zz_generated.flags_test.go"), + }, + &cli.StringFlag{ + Name: "generated-package-name", + Aliases: []string{"p"}, + Value: defaultPackageName, + }, + &cli.StringFlag{ + Name: "generated-test-package-name", + Aliases: []string{"T"}, + Value: defaultPackageName + "_test", + }, + &cli.StringFlag{ + Name: "urfave-cli-namespace", + Aliases: []string{"n"}, + Value: "", + }, + &cli.StringFlag{ + Name: "urfave-cli-test-namespace", + Aliases: []string{"N"}, + Value: "cli.", + }, + }, + Action: runGenFlags, + } + + if err := app.RunContext(ctx, os.Args); err != nil { + log.Fatal(err) + } +} + +func runGenFlags(cCtx *cli.Context) error { + specBytes, err := os.ReadFile(cCtx.Path("flag-spec-yaml")) + if err != nil { + return err + } + + spec := &genflags.Spec{} + if err := yaml.Unmarshal(specBytes, spec); err != nil { + return err + } + + if cCtx.IsSet("generated-package-name") { + spec.PackageName = strings.TrimSpace(cCtx.String("generated-package-name")) + } + + if strings.TrimSpace(spec.PackageName) == "" { + spec.PackageName = defaultPackageName + } + + if cCtx.IsSet("generated-test-package-name") { + spec.TestPackageName = strings.TrimSpace(cCtx.String("generated-test-package-name")) + } + + if strings.TrimSpace(spec.TestPackageName) == "" { + spec.TestPackageName = defaultPackageName + "_test" + } + + if cCtx.IsSet("urfave-cli-namespace") { + spec.UrfaveCLINamespace = strings.TrimSpace(cCtx.String("urfave-cli-namespace")) + } + + if cCtx.IsSet("urfave-cli-test-namespace") { + spec.UrfaveCLITestNamespace = strings.TrimSpace(cCtx.String("urfave-cli-test-namespace")) + } else { + spec.UrfaveCLITestNamespace = "cli." + } + + genTmpl, err := template.New("gen").Parse(genflags.TemplateString) + if err != nil { + return err + } + + genTestTmpl, err := template.New("gen_test").Parse(genflags.TestTemplateString) + if err != nil { + return err + } + + genBuf := &bytes.Buffer{} + if err := genTmpl.Execute(genBuf, spec); err != nil { + return err + } + + genTestBuf := &bytes.Buffer{} + if err := genTestTmpl.Execute(genTestBuf, spec); err != nil { + return err + } + + if err := os.WriteFile(cCtx.Path("generated-output"), genBuf.Bytes(), 0644); err != nil { + return err + } + + if err := os.WriteFile(cCtx.Path("generated-test-output"), genTestBuf.Bytes(), 0644); err != nil { + return err + } + + if _, err := sh(cCtx.Context, "goimports", "-w", cCtx.Path("generated-output")); err != nil { + return err + } + + if _, err := sh(cCtx.Context, "goimports", "-w", cCtx.Path("generated-test-output")); err != nil { + return err + } + + return nil +} diff --git a/internal/genflags/generated.gotmpl b/internal/genflags/generated.gotmpl new file mode 100644 index 0000000000..681a1018b0 --- /dev/null +++ b/internal/genflags/generated.gotmpl @@ -0,0 +1,53 @@ +// WARNING: this file is generated. DO NOT EDIT + +package {{.PackageName}} + +{{range .SortedFlagTypes}} +// {{.TypeName}} is a flag with type {{.GoType}} +type {{.TypeName}} struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value {{if .ValuePointer}}*{{end}}{{.GoType}} + Destination *{{.GoType}} + + Aliases []string + EnvVars []string + + {{range .StructFields}} + {{.Name}} {{.Type}} + {{end}} +} + +{{if .GenerateFmtStringerInterface}} +// String returns a readable representation of this value (for usage defaults) +func (f *{{.TypeName}}) String() string { + return {{$.UrfaveCLINamespace}}FlagStringer(f) +} +{{end}} + +{{if .GenerateFlagInterface}} +// IsSet returns whether or not the flag has been set through env or file +func (f *{{.TypeName}}) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *{{.TypeName}}) Names() []string { + return {{$.UrfaveCLINamespace}}FlagNames(f.Name, f.Aliases) +} + +{{end}}{{/* /if .GenerateFlagInterface */}} +{{end}}{{/* /range .SortedFlagTypes */}} + +// vim{{/* 👻 */}}:ro +{{/* +vim:filetype=gotexttmpl +*/}} diff --git a/internal/genflags/generated_test.gotmpl b/internal/genflags/generated_test.gotmpl new file mode 100644 index 0000000000..84806f2f1a --- /dev/null +++ b/internal/genflags/generated_test.gotmpl @@ -0,0 +1,22 @@ +// WARNING: this file is generated. DO NOT EDIT + +package {{.TestPackageName}} + +{{range .SortedFlagTypes}} +{{if .GenerateFlagInterface}} +func Test{{.TypeName}}_SatisfiesFlagInterface(t *testing.T) { + var _ {{$.UrfaveCLITestNamespace}}Flag = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} +} +{{end}} + +{{if .GenerateFmtStringerInterface}} +func Test{{.TypeName}}_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} +} +{{end}} +{{end}} + +// vim{{/* 👻 */}}:ro +{{/* +vim:filetype=gotexttmpl +*/}} diff --git a/internal/genflags/package.go b/internal/genflags/package.go new file mode 100644 index 0000000000..4e5de41a77 --- /dev/null +++ b/internal/genflags/package.go @@ -0,0 +1,34 @@ +package genflags + +import ( + _ "embed" + "strings" + + "golang.org/x/text/cases" + "golang.org/x/text/language" +) + +var ( + //go:embed generated.gotmpl + TemplateString string + + //go:embed generated_test.gotmpl + TestTemplateString string + + titler = cases.Title(language.Und, cases.NoLower) +) + +func TypeName(goType string, fc *FlagTypeConfig) string { + if fc != nil && strings.TrimSpace(fc.TypeName) != "" { + return strings.TrimSpace(fc.TypeName) + } + + dotSplit := strings.Split(goType, ".") + goType = dotSplit[len(dotSplit)-1] + + if strings.HasPrefix(goType, "[]") { + return titler.String(strings.TrimPrefix(goType, "[]")) + "SliceFlag" + } + + return titler.String(goType) + "Flag" +} diff --git a/internal/genflags/package_test.go b/internal/genflags/package_test.go new file mode 100644 index 0000000000..3920540778 --- /dev/null +++ b/internal/genflags/package_test.go @@ -0,0 +1,41 @@ +package genflags_test + +import ( + "fmt" + "testing" + + "github.com/urfave/cli/v2/internal/genflags" +) + +func TestTypeName(t *testing.T) { + for _, tc := range []struct { + gt string + fc *genflags.FlagTypeConfig + expected string + }{ + {gt: "int", fc: nil, expected: "IntFlag"}, + {gt: "int", fc: &genflags.FlagTypeConfig{}, expected: "IntFlag"}, + {gt: "int", fc: &genflags.FlagTypeConfig{TypeName: "VeryIntyFlag"}, expected: "VeryIntyFlag"}, + {gt: "[]bool", fc: nil, expected: "BoolSliceFlag"}, + {gt: "[]bool", fc: &genflags.FlagTypeConfig{}, expected: "BoolSliceFlag"}, + {gt: "[]bool", fc: &genflags.FlagTypeConfig{TypeName: "ManyTruthsFlag"}, expected: "ManyTruthsFlag"}, + {gt: "time.Rumination", fc: nil, expected: "RuminationFlag"}, + {gt: "time.Rumination", fc: &genflags.FlagTypeConfig{}, expected: "RuminationFlag"}, + {gt: "time.Rumination", fc: &genflags.FlagTypeConfig{TypeName: "PonderFlag"}, expected: "PonderFlag"}, + } { + t.Run( + fmt.Sprintf("type=%s,cfg=%v", tc.gt, func() string { + if tc.fc != nil { + return tc.fc.TypeName + } + return "nil" + }()), + func(ct *testing.T) { + actual := genflags.TypeName(tc.gt, tc.fc) + if tc.expected != actual { + ct.Errorf("expected %q, got %q", tc.expected, actual) + } + }, + ) + } +} diff --git a/internal/genflags/spec.go b/internal/genflags/spec.go new file mode 100644 index 0000000000..d9f18db03f --- /dev/null +++ b/internal/genflags/spec.go @@ -0,0 +1,100 @@ +package genflags + +import ( + "sort" + "strings" +) + +type Spec struct { + FlagTypes map[string]*FlagTypeConfig `yaml:"flag_types"` + PackageName string `yaml:"package_name"` + TestPackageName string `yaml:"test_package_name"` + UrfaveCLINamespace string `yaml:"urfave_cli_namespace"` + UrfaveCLITestNamespace string `yaml:"urfave_cli_test_namespace"` +} + +func (gfs *Spec) SortedFlagTypes() []*FlagType { + typeNames := []string{} + + for name := range gfs.FlagTypes { + if strings.HasPrefix(name, "[]") { + name = strings.TrimPrefix(name, "[]") + "Slice" + } + + typeNames = append(typeNames, name) + } + + sort.Strings(typeNames) + + ret := make([]*FlagType, len(typeNames)) + + for i, typeName := range typeNames { + ret[i] = &FlagType{ + GoType: typeName, + Config: gfs.FlagTypes[typeName], + } + } + + return ret +} + +type FlagTypeConfig struct { + SkipInterfaces []string `yaml:"skip_interfaces"` + StructFields []*FlagStructField `yaml:"struct_fields"` + TypeName string `yaml:"type_name"` + ValuePointer bool `yaml:"value_pointer"` +} + +type FlagStructField struct { + Name string + Type string +} + +type FlagType struct { + GoType string + Config *FlagTypeConfig +} + +func (ft *FlagType) StructFields() []*FlagStructField { + if ft.Config == nil || ft.Config.StructFields == nil { + return []*FlagStructField{} + } + + return ft.Config.StructFields +} + +func (ft *FlagType) ValuePointer() bool { + if ft.Config == nil { + return false + } + + return ft.Config.ValuePointer +} + +func (ft *FlagType) TypeName() string { + return TypeName(ft.GoType, ft.Config) +} + +func (ft *FlagType) GenerateFmtStringerInterface() bool { + return ft.skipInterfaceNamed("fmt.Stringer") +} + +func (ft *FlagType) GenerateFlagInterface() bool { + return ft.skipInterfaceNamed("Flag") +} + +func (ft *FlagType) skipInterfaceNamed(name string) bool { + if ft.Config == nil { + return true + } + + lowName := strings.ToLower(name) + + for _, interfaceName := range ft.Config.SkipInterfaces { + if strings.ToLower(interfaceName) == lowName { + return false + } + } + + return true +} diff --git a/zz_generated.flags.go b/zz_generated.flags.go new file mode 100644 index 0000000000..eb980bcb14 --- /dev/null +++ b/zz_generated.flags.go @@ -0,0 +1,507 @@ +// WARNING: this file is generated. DO NOT EDIT + +package cli + +import "time" + +// Float64SliceFlag is a flag with type Float64Slice +type Float64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Float64Slice + Destination *Float64Slice + + Aliases []string + EnvVars []string +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *Float64SliceFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *Float64SliceFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// GenericFlag is a flag with type Generic +type GenericFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Generic + Destination *Generic + + Aliases []string + EnvVars []string + + TakesFile bool +} + +// String returns a readable representation of this value (for usage defaults) +func (f *GenericFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *GenericFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *GenericFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// Int64SliceFlag is a flag with type Int64Slice +type Int64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Int64Slice + Destination *Int64Slice + + Aliases []string + EnvVars []string +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *Int64SliceFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *Int64SliceFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// IntSliceFlag is a flag with type IntSlice +type IntSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *IntSlice + Destination *IntSlice + + Aliases []string + EnvVars []string +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *IntSliceFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *IntSliceFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// PathFlag is a flag with type Path +type PathFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Path + Destination *Path + + Aliases []string + EnvVars []string + + TakesFile bool +} + +// String returns a readable representation of this value (for usage defaults) +func (f *PathFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *PathFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *PathFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// StringSliceFlag is a flag with type StringSlice +type StringSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *StringSlice + Destination *StringSlice + + Aliases []string + EnvVars []string + + TakesFile bool +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *StringSliceFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *StringSliceFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// TimestampFlag is a flag with type Timestamp +type TimestampFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Timestamp + Destination *Timestamp + + Aliases []string + EnvVars []string + + Layout string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *TimestampFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *TimestampFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *TimestampFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// BoolFlag is a flag with type bool +type BoolFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value bool + Destination *bool + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *BoolFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *BoolFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *BoolFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// Float64Flag is a flag with type float64 +type Float64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value float64 + Destination *float64 + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *Float64Flag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *Float64Flag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *Float64Flag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// IntFlag is a flag with type int +type IntFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int + Destination *int + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *IntFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *IntFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *IntFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// Int64Flag is a flag with type int64 +type Int64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int64 + Destination *int64 + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *Int64Flag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *Int64Flag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *Int64Flag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// StringFlag is a flag with type string +type StringFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value string + Destination *string + + Aliases []string + EnvVars []string + + TakesFile bool +} + +// String returns a readable representation of this value (for usage defaults) +func (f *StringFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *StringFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *StringFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// DurationFlag is a flag with type time.Duration +type DurationFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value time.Duration + Destination *time.Duration + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *DurationFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *DurationFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *DurationFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// UintFlag is a flag with type uint +type UintFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint + Destination *uint + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *UintFlag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *UintFlag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *UintFlag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// Uint64Flag is a flag with type uint64 +type Uint64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint64 + Destination *uint64 + + Aliases []string + EnvVars []string +} + +// String returns a readable representation of this value (for usage defaults) +func (f *Uint64Flag) String() string { + return FlagStringer(f) +} + +// IsSet returns whether or not the flag has been set through env or file +func (f *Uint64Flag) IsSet() bool { + return f.HasBeenSet +} + +// Names returns the names of the flag +func (f *Uint64Flag) Names() []string { + return FlagNames(f.Name, f.Aliases) +} + +// vim:ro diff --git a/zz_generated.flags_test.go b/zz_generated.flags_test.go new file mode 100644 index 0000000000..791c61f07a --- /dev/null +++ b/zz_generated.flags_test.go @@ -0,0 +1,116 @@ +// WARNING: this file is generated. DO NOT EDIT + +package cli_test + +import ( + "fmt" + "testing" + + "github.com/urfave/cli/v2" +) + +func TestFloat64SliceFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.Float64SliceFlag{} +} + +func TestGenericFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.GenericFlag{} +} + +func TestGenericFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.GenericFlag{} +} + +func TestInt64SliceFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.Int64SliceFlag{} +} + +func TestIntSliceFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.IntSliceFlag{} +} + +func TestPathFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.PathFlag{} +} + +func TestPathFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.PathFlag{} +} + +func TestStringSliceFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.StringSliceFlag{} +} + +func TestTimestampFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.TimestampFlag{} +} + +func TestTimestampFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.TimestampFlag{} +} + +func TestBoolFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.BoolFlag{} +} + +func TestBoolFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.BoolFlag{} +} + +func TestFloat64Flag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.Float64Flag{} +} + +func TestFloat64Flag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.Float64Flag{} +} + +func TestIntFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.IntFlag{} +} + +func TestIntFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.IntFlag{} +} + +func TestInt64Flag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.Int64Flag{} +} + +func TestInt64Flag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.Int64Flag{} +} + +func TestStringFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.StringFlag{} +} + +func TestStringFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.StringFlag{} +} + +func TestDurationFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.DurationFlag{} +} + +func TestDurationFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.DurationFlag{} +} + +func TestUintFlag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.UintFlag{} +} + +func TestUintFlag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.UintFlag{} +} + +func TestUint64Flag_SatisfiesFlagInterface(t *testing.T) { + var _ cli.Flag = &cli.Uint64Flag{} +} + +func TestUint64Flag_SatisfiesFmtStringerInterface(t *testing.T) { + var _ fmt.Stringer = &cli.Uint64Flag{} +} + +// vim:ro From 2630f2642a16f987ece3fd7a2faf688945b5fda5 Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Sun, 1 May 2022 23:16:59 -0400 Subject: [PATCH 2/7] Add missing go.sum entry plus minor touchups to genflags app --- go.sum | 1 + internal/genflags/cmd/genflags/main.go | 2 ++ 2 files changed, 3 insertions(+) diff --git a/go.sum b/go.sum index a96d8e78ef..e6383ebad5 100644 --- a/go.sum +++ b/go.sum @@ -6,6 +6,7 @@ github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM= golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk= golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e h1:FDhOuMEY4JVRztM/gsbk+IKUQ8kj74bxZrgw87eMMVc= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= diff --git a/internal/genflags/cmd/genflags/main.go b/internal/genflags/cmd/genflags/main.go index f4aaeba15e..cad25088f6 100644 --- a/internal/genflags/cmd/genflags/main.go +++ b/internal/genflags/cmd/genflags/main.go @@ -39,6 +39,8 @@ func main() { } app := &cli.App{ + Name: "genflags", + Usage: "Generate flag types for urfave/cli", Flags: []cli.Flag{ &cli.PathFlag{ Name: "flag-spec-yaml", From adc61ca06b8b8c4537776b5db1052842fa5e3fac Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Sun, 1 May 2022 23:18:16 -0400 Subject: [PATCH 3/7] Add another missing go.sum entry (?) --- go.sum | 1 + 1 file changed, 1 insertion(+) diff --git a/go.sum b/go.sum index e6383ebad5..2c20c28ff3 100644 --- a/go.sum +++ b/go.sum @@ -7,6 +7,7 @@ github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk= golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ= golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e h1:FDhOuMEY4JVRztM/gsbk+IKUQ8kj74bxZrgw87eMMVc= +golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= From 71cd131794231860b15fb029002cd309db40c300 Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Sun, 1 May 2022 23:36:59 -0400 Subject: [PATCH 4/7] Add more tests to flag generation code --- internal/genflags/generated_test.gotmpl | 9 +- internal/genflags/spec_test.go | 112 ++++++++++++++++++++++ zz_generated.flags_test.go | 119 ++++++++++++++++++------ 3 files changed, 212 insertions(+), 28 deletions(-) create mode 100644 internal/genflags/spec_test.go diff --git a/internal/genflags/generated_test.gotmpl b/internal/genflags/generated_test.gotmpl index 84806f2f1a..44e9ad4428 100644 --- a/internal/genflags/generated_test.gotmpl +++ b/internal/genflags/generated_test.gotmpl @@ -5,13 +5,18 @@ package {{.TestPackageName}} {{range .SortedFlagTypes}} {{if .GenerateFlagInterface}} func Test{{.TypeName}}_SatisfiesFlagInterface(t *testing.T) { - var _ {{$.UrfaveCLITestNamespace}}Flag = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} + var f {{$.UrfaveCLITestNamespace}}Flag = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} + + _ = f.IsSet() + _ = f.Names() } {{end}} {{if .GenerateFmtStringerInterface}} func Test{{.TypeName}}_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} + var f fmt.Stringer = &{{$.UrfaveCLITestNamespace}}{{.TypeName}}{} + + _ = f.String() } {{end}} {{end}} diff --git a/internal/genflags/spec_test.go b/internal/genflags/spec_test.go new file mode 100644 index 0000000000..25a9c8b36f --- /dev/null +++ b/internal/genflags/spec_test.go @@ -0,0 +1,112 @@ +package genflags_test + +import ( + "reflect" + "testing" + + "github.com/urfave/cli/v2/internal/genflags" +) + +func TestSpec_SortedFlagTypes(t *testing.T) { + spec := &genflags.Spec{ + FlagTypes: map[string]*genflags.FlagTypeConfig{ + "nerf": &genflags.FlagTypeConfig{}, + "gerf": nil, + }, + } + + actual := spec.SortedFlagTypes() + expected := []*genflags.FlagType{ + { + GoType: "gerf", + Config: nil, + }, + { + GoType: "nerf", + Config: &genflags.FlagTypeConfig{}, + }, + } + if !reflect.DeepEqual(expected, actual) { + t.Errorf("expected %#v, got %#v", expected, actual) + } +} + +func genFlagType() *genflags.FlagType { + return &genflags.FlagType{ + GoType: "blerf", + Config: &genflags.FlagTypeConfig{ + SkipInterfaces: []string{"fmt.Stringer"}, + StructFields: []*genflags.FlagStructField{ + { + Name: "Foibles", + Type: "int", + }, + { + Name: "Hoopled", + Type: "bool", + }, + }, + TypeName: "YeOldeBlerfFlag", + ValuePointer: true, + }, + } +} + +func TestFlagType_StructFields(t *testing.T) { + ft := genFlagType() + + sf := ft.StructFields() + if 2 != len(sf) { + t.Errorf("expected 2 struct fields, got %v", len(sf)) + return + } + + if "Foibles" != sf[0].Name { + t.Errorf("expected struct field order to be retained") + } +} + +func TestFlagType_ValuePointer(t *testing.T) { + ft := genFlagType() + + if !ft.ValuePointer() { + t.Errorf("expected ValuePointer to be true") + return + } + + ft.Config = nil + + if ft.ValuePointer() { + t.Errorf("expected ValuePointer to be false") + } +} + +func TestFlagType_GenerateFmtStringerInterface(t *testing.T) { + ft := genFlagType() + + if ft.GenerateFmtStringerInterface() { + t.Errorf("expected GenerateFmtStringerInterface to be false") + return + } + + ft.Config = nil + + if !ft.GenerateFmtStringerInterface() { + t.Errorf("expected GenerateFmtStringerInterface to be true") + } +} + +func TestFlagType_GenerateFlagInterface(t *testing.T) { + ft := genFlagType() + + if !ft.GenerateFlagInterface() { + t.Errorf("expected GenerateFlagInterface to be true") + return + } + + ft.Config = nil + + if !ft.GenerateFlagInterface() { + t.Errorf("expected GenerateFlagInterface to be true") + } +} diff --git a/zz_generated.flags_test.go b/zz_generated.flags_test.go index 791c61f07a..b8363d4a35 100644 --- a/zz_generated.flags_test.go +++ b/zz_generated.flags_test.go @@ -10,107 +10,174 @@ import ( ) func TestFloat64SliceFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.Float64SliceFlag{} + var f cli.Flag = &cli.Float64SliceFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestGenericFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.GenericFlag{} + var f cli.Flag = &cli.GenericFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestGenericFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.GenericFlag{} + var f fmt.Stringer = &cli.GenericFlag{} + + _ = f.String() } func TestInt64SliceFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.Int64SliceFlag{} + var f cli.Flag = &cli.Int64SliceFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestIntSliceFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.IntSliceFlag{} + var f cli.Flag = &cli.IntSliceFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestPathFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.PathFlag{} + var f cli.Flag = &cli.PathFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestPathFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.PathFlag{} + var f fmt.Stringer = &cli.PathFlag{} + + _ = f.String() } func TestStringSliceFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.StringSliceFlag{} + var f cli.Flag = &cli.StringSliceFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestTimestampFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.TimestampFlag{} + var f cli.Flag = &cli.TimestampFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestTimestampFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.TimestampFlag{} + var f fmt.Stringer = &cli.TimestampFlag{} + + _ = f.String() } func TestBoolFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.BoolFlag{} + var f cli.Flag = &cli.BoolFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestBoolFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.BoolFlag{} + var f fmt.Stringer = &cli.BoolFlag{} + + _ = f.String() } func TestFloat64Flag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.Float64Flag{} + var f cli.Flag = &cli.Float64Flag{} + + _ = f.IsSet() + _ = f.Names() } func TestFloat64Flag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.Float64Flag{} + var f fmt.Stringer = &cli.Float64Flag{} + + _ = f.String() } func TestIntFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.IntFlag{} + var f cli.Flag = &cli.IntFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestIntFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.IntFlag{} + var f fmt.Stringer = &cli.IntFlag{} + + _ = f.String() } func TestInt64Flag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.Int64Flag{} + var f cli.Flag = &cli.Int64Flag{} + + _ = f.IsSet() + _ = f.Names() } func TestInt64Flag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.Int64Flag{} + var f fmt.Stringer = &cli.Int64Flag{} + + _ = f.String() } func TestStringFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.StringFlag{} + var f cli.Flag = &cli.StringFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestStringFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.StringFlag{} + var f fmt.Stringer = &cli.StringFlag{} + + _ = f.String() } func TestDurationFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.DurationFlag{} + var f cli.Flag = &cli.DurationFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestDurationFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.DurationFlag{} + var f fmt.Stringer = &cli.DurationFlag{} + + _ = f.String() } func TestUintFlag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.UintFlag{} + var f cli.Flag = &cli.UintFlag{} + + _ = f.IsSet() + _ = f.Names() } func TestUintFlag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.UintFlag{} + var f fmt.Stringer = &cli.UintFlag{} + + _ = f.String() } func TestUint64Flag_SatisfiesFlagInterface(t *testing.T) { - var _ cli.Flag = &cli.Uint64Flag{} + var f cli.Flag = &cli.Uint64Flag{} + + _ = f.IsSet() + _ = f.Names() } func TestUint64Flag_SatisfiesFmtStringerInterface(t *testing.T) { - var _ fmt.Stringer = &cli.Uint64Flag{} + var f fmt.Stringer = &cli.Uint64Flag{} + + _ = f.String() } // vim:ro From 3288bec5be9f32485e1e4876d0c7b05be8ccd67e Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Wed, 4 May 2022 10:32:29 -0400 Subject: [PATCH 5/7] Introduce a v2.x semver approval gate --- Makefile | 28 +- docs/CONTRIBUTING.md | 23 +- godoc-current.txt | 2090 +++++++++++++++++++++++++++++++++++++++ internal/build/build.go | 91 +- testdata/godoc-v2.x.txt | 2090 +++++++++++++++++++++++++++++++++++++++ 5 files changed, 4299 insertions(+), 23 deletions(-) create mode 100644 godoc-current.txt create mode 100644 testdata/godoc-v2.x.txt diff --git a/Makefile b/Makefile index dd6893a473..52e9204d6c 100644 --- a/Makefile +++ b/Makefile @@ -5,30 +5,22 @@ # attention on files that are primarily Go. .PHONY: all -all: generate lint tag-test test check-bin tag-check-bin gfmrun toc +all: generate vet tag-test test check-binary-size tag-check-binary-size gfmrun toc v2diff -.PHONY: generate -generate: - go run internal/build/build.go generate - -.PHONY: lint -lint: - go run internal/build/build.go vet +# NOTE: this is a special catch-all rule to run any of the commands +# defined in internal/build/build.go with optional arguments passed +# via GFLAGS (global flags) and FLAGS (command-specific flags), e.g.: +# +# $ make test GFLAGS='--packages cli' +%: + go run internal/build/build.go $(GFLAGS) $* $(FLAGS) .PHONY: tag-test tag-test: go run internal/build/build.go -tags urfave_cli_no_docs test -.PHONY: test -test: - go run internal/build/build.go test - -.PHONY: check-bin -check-bin: - go run internal/build/build.go check-binary-size - -.PHONY: tag-check-bin -tag-check-bin: +.PHONY: tag-check-binary-size +tag-check-binary-size: go run internal/build/build.go -tags urfave_cli_no_docs check-binary-size .PHONY: gfmrun diff --git a/docs/CONTRIBUTING.md b/docs/CONTRIBUTING.md index 88c6b95534..37055fff38 100644 --- a/docs/CONTRIBUTING.md +++ b/docs/CONTRIBUTING.md @@ -12,8 +12,9 @@ not get a response for many days. ### semantic versioning adherence -The `urfave/cli` project strives to strictly adhere to semantic versioning. The active -development branches and the milestones and import paths to which they correspond are: +The `urfave/cli` project strives to strictly adhere to [semantic +versioning](https://semver.org/spec/v2.0.0.html). The active development branches and the +milestones and import paths to which they correspond are: #### `main` branch @@ -25,6 +26,10 @@ which **MUST** *only* receive bug fixes and feature *additions*. - :arrow_right: [`v2.x`](https://github.com/urfave/cli/milestone/16) - :arrow_right: `github.com/urfave/cli/v2` +The `main` branch in particular includes tooling to help with keeping the `v2.x` series +backward compatible. More details on this process are in the development workflow section +below. + #### `v1` branch @@ -63,6 +68,20 @@ verify one's changes are harmonious in nature. The same steps are also run durin [continuous integration phase](https://github.com/urfave/cli/blob/main/.github/workflows/cli.yml). +In the event that the `v2diff` target exits non-zero, this is a signal that the public API +surface area has changed. If the changes adhere to semantic versioning, meaning they are +*additions* or *bug fixes*, then manually running the approval step will "promote" the +current `go doc` output: + +```sh +make v2approve +``` + +Because the `generate` step includes updating `godoc-current.txt` and +`testdata/godoc-v2.x.txt`, these changes *MUST* be part of any proposed pull request so +that reviewers have an opportunity to also make an informed decision about the "promotion" +step. + #### generated code A significant portion of the project's source code is generated, with the goal being to diff --git a/godoc-current.txt b/godoc-current.txt new file mode 100644 index 0000000000..1a9ab238ad --- /dev/null +++ b/godoc-current.txt @@ -0,0 +1,2090 @@ +package cli // import "github.com/urfave/cli/v2" + +Package cli provides a minimal framework for creating and organizing command +line Go applications. cli is designed to be easy to understand and write, +the most simple cli application can be written as follows: + + func main() { + (&cli.App{}).Run(os.Args) + } + +Of course this application does not do much, so let's make this an actual +application: + + func main() { + app := &cli.App{ + Name: "greet", + Usage: "say a greeting", + Action: func(c *cli.Context) error { + fmt.Println("Greetings") + return nil + }, + } + + app.Run(os.Args) + } + +VARIABLES + +var AppHelpTemplate = `NAME: + {{.Name}}{{if .Usage}} - {{.Usage}}{{end}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}} + +VERSION: + {{.Version}}{{end}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}}{{if len .Authors}} + +AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}: + {{range $index, $author := .Authors}}{{if $index}} + {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{end}}{{if .VisibleFlags}} + +GLOBAL OPTIONS: + {{range $index, $option := .VisibleFlags}}{{if $index}} + {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}} + +COPYRIGHT: + {{.Copyright}}{{end}} +` + AppHelpTemplate is the text template for the Default help topic. cli.go uses + text/template to render templates. You can render custom help text by + setting this variable. + +var CommandHelpTemplate = `NAME: + {{.HelpName}} - {{.Usage}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Category}} + +CATEGORY: + {{.Category}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}}{{if .VisibleFlags}} + +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + CommandHelpTemplate is the text template for the command help topic. cli.go + uses text/template to render templates. You can render custom help text by + setting this variable. + +var ErrWriter io.Writer = os.Stderr + ErrWriter is used to write errors to the user. This can be anything + implementing the io.Writer interface and defaults to os.Stderr. + +var FishCompletionTemplate = `# {{ .App.Name }} fish shell completion + +function __fish_{{ .App.Name }}_no_subcommand --description 'Test if there has been any subcommand yet' + for i in (commandline -opc) + if contains -- $i{{ range $v := .AllCommands }} {{ $v }}{{ end }} + return 1 + end + end + return 0 +end + +{{ range $v := .Completions }}{{ $v }} +{{ end }}` +var MarkdownDocTemplate = `{{if gt .SectionNum 0}}% {{ .App.Name }} {{ .SectionNum }} + +{{end}}# NAME + +{{ .App.Name }}{{ if .App.Usage }} - {{ .App.Usage }}{{ end }} + +# SYNOPSIS + +{{ .App.Name }} +{{ if .SynopsisArgs }} +` + "```" + ` +{{ range $v := .SynopsisArgs }}{{ $v }}{{ end }}` + "```" + ` +{{ end }}{{ if .App.Description }} +# DESCRIPTION + +{{ .App.Description }} +{{ end }} +**Usage**: + +` + "```" + `{{ if .App.UsageText }} +{{ .App.UsageText }} +{{ else }} +{{ .App.Name }} [GLOBAL OPTIONS] command [COMMAND OPTIONS] [ARGUMENTS...] +{{ end }}` + "```" + ` +{{ if .GlobalArgs }} +# GLOBAL OPTIONS +{{ range $v := .GlobalArgs }} +{{ $v }}{{ end }} +{{ end }}{{ if .Commands }} +# COMMANDS +{{ range $v := .Commands }} +{{ $v }}{{ end }}{{ end }}` +var OsExiter = os.Exit + OsExiter is the function used when the app exits. If not set defaults to + os.Exit. + +var SubcommandHelpTemplate = `NAME: + {{.HelpName}} - {{.Usage}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}} + +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + SubcommandHelpTemplate is the text template for the subcommand help topic. + cli.go uses text/template to render templates. You can render custom help + text by setting this variable. + +var VersionPrinter = printVersion + VersionPrinter prints the version for the App + +var HelpPrinter helpPrinter = printHelp + HelpPrinter is a function that writes the help output. If not set + explicitly, this calls HelpPrinterCustom using only the default template + functions. + + If custom logic for printing help is required, this function can be + overridden. If the ExtraInfo field is defined on an App, this function + should not be modified, as HelpPrinterCustom will be used directly in order + to capture the extra information. + +var HelpPrinterCustom helpPrinterCustom = printHelpCustom + HelpPrinterCustom is a function that writes the help output. It is used as + the default implementation of HelpPrinter, and may be called directly if the + ExtraInfo field is set on an App. + + +FUNCTIONS + +func DefaultAppComplete(cCtx *Context) + DefaultAppComplete prints the list of subcommands as the default app + completion method + +func DefaultCompleteWithFlags(cmd *Command) func(cCtx *Context) +func FlagNames(name string, aliases []string) []string +func HandleAction(action interface{}, cCtx *Context) (err error) + HandleAction attempts to figure out which Action signature was used. If it's + an ActionFunc or a func with the legacy signature for Action, the func is + run! + +func HandleExitCoder(err error) + HandleExitCoder handles errors implementing ExitCoder by printing their + message and calling OsExiter with the given exit code. + + If the given error instead implements MultiError, each error will be checked + for the ExitCoder interface, and OsExiter will be called with the last exit + code found, or exit code 1 if no ExitCoder is found. + + This function is the default error-handling behavior for an App. + +func ShowAppHelp(cCtx *Context) error + ShowAppHelp is an action that displays the help. + +func ShowAppHelpAndExit(c *Context, exitCode int) + ShowAppHelpAndExit - Prints the list of subcommands for the app and exits + with exit code. + +func ShowCommandCompletions(ctx *Context, command string) + ShowCommandCompletions prints the custom completions for a given command + +func ShowCommandHelp(ctx *Context, command string) error + ShowCommandHelp prints help for the given command + +func ShowCommandHelpAndExit(c *Context, command string, code int) + ShowCommandHelpAndExit - exits with code after showing help + +func ShowCompletions(cCtx *Context) + ShowCompletions prints the lists of commands within a given context + +func ShowSubcommandHelp(cCtx *Context) error + ShowSubcommandHelp prints help for the given subcommand + +func ShowSubcommandHelpAndExit(c *Context, exitCode int) + ShowSubcommandHelpAndExit - Prints help for the given subcommand and exits + with exit code. + +func ShowVersion(cCtx *Context) + ShowVersion prints the version number of the App + + +TYPES + +type ActionFunc func(*Context) error + ActionFunc is the action to execute when no subcommands are specified + +type AfterFunc func(*Context) error + AfterFunc is an action to execute after any subcommands are run, but after + the subcommand has finished it is run even if Action() panics + +type App struct { + // The name of the program. Defaults to path.Base(os.Args[0]) + Name string + // Full name of command for help, defaults to Name + HelpName string + // Description of the program. + Usage string + // Text to override the USAGE section of help + UsageText string + // Description of the program argument format. + ArgsUsage string + // Version of the program + Version string + // Description of the program + Description string + // List of commands to execute + Commands []*Command + // List of flags to parse + Flags []Flag + // Boolean to enable bash completion commands + EnableBashCompletion bool + // Boolean to hide built-in help command and help flag + HideHelp bool + // Boolean to hide built-in help command but keep help flag. + // Ignored if HideHelp is true. + HideHelpCommand bool + // Boolean to hide built-in version flag and the VERSION section of help + HideVersion bool + + // An action to execute when the shell completion flag is set + BashComplete BashCompleteFunc + // An action to execute before any subcommands are run, but after the context is ready + // If a non-nil error is returned, no subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + // The action to execute when no subcommands are specified + Action ActionFunc + // Execute this function if the proper command cannot be found + CommandNotFound CommandNotFoundFunc + // Execute this function if a usage error occurs + OnUsageError OnUsageErrorFunc + // Compilation date + Compiled time.Time + // List of all authors who contributed + Authors []*Author + // Copyright of the binary if any + Copyright string + // Reader reader to write input to (useful for tests) + Reader io.Reader + // Writer writer to write output to + Writer io.Writer + // ErrWriter writes error output + ErrWriter io.Writer + // ExitErrHandler processes any error encountered while running an App before + // it is returned to the caller. If no function is provided, HandleExitCoder + // is used as the default behavior. + ExitErrHandler ExitErrHandlerFunc + // Other custom info + Metadata map[string]interface{} + // Carries a function which returns app specific info. + ExtraInfo func() map[string]string + // CustomAppHelpTemplate the text template for app help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomAppHelpTemplate string + // Boolean to enable short-option handling so user can combine several + // single-character bool arguments into one + // i.e. foobar -o -v -> foobar -ov + UseShortOptionHandling bool + + // Has unexported fields. +} + App is the main structure of a cli application. It is recommended that an + app be created with the cli.NewApp() function + +func NewApp() *App + NewApp creates a new cli Application with some reasonable defaults for Name, + Usage, Version and Action. + +func (a *App) Command(name string) *Command + Command returns the named command on App. Returns nil if the command does + not exist + +func (a *App) Run(arguments []string) (err error) + Run is the entry point to the cli app. Parses the arguments slice and routes + to the proper flag/args combination + +func (a *App) RunAndExitOnError() + RunAndExitOnError calls .Run() and exits non-zero if an error was returned + + Deprecated: instead you should return an error that fulfills cli.ExitCoder + to cli.App.Run. This will cause the application to exit with the given error + code in the cli.ExitCoder + +func (a *App) RunAsSubcommand(ctx *Context) (err error) + RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() + to generate command-specific flags + +func (a *App) RunContext(ctx context.Context, arguments []string) (err error) + RunContext is like Run except it takes a Context that will be passed to its + commands and sub-commands. Through this, you can propagate timeouts and + cancellation requests + +func (a *App) Setup() + Setup runs initialization code to ensure all data structures are ready for + `Run` or inspection prior to `Run`. It is internally called by `Run`, but + will return early if setup has already happened. + +func (a *App) ToFishCompletion() (string, error) + ToFishCompletion creates a fish completion string for the `*App` The + function errors if either parsing or writing of the string fails. + +func (a *App) ToMan() (string, error) + ToMan creates a man page string for the `*App` The function errors if either + parsing or writing of the string fails. + +func (a *App) ToManWithSection(sectionNumber int) (string, error) + ToMan creates a man page string with section number for the `*App` The + function errors if either parsing or writing of the string fails. + +func (a *App) ToMarkdown() (string, error) + ToMarkdown creates a markdown string for the `*App` The function errors if + either parsing or writing of the string fails. + +func (a *App) VisibleCategories() []CommandCategory + VisibleCategories returns a slice of categories and commands that are + Hidden=false + +func (a *App) VisibleCommands() []*Command + VisibleCommands returns a slice of the Commands with Hidden=false + +func (a *App) VisibleFlags() []Flag + VisibleFlags returns a slice of the Flags with Hidden=false + +type Args interface { + // Get returns the nth argument, or else a blank string + Get(n int) string + // First returns the first argument, or else a blank string + First() string + // Tail returns the rest of the arguments (not the first one) + // or else an empty string slice + Tail() []string + // Len returns the length of the wrapped slice + Len() int + // Present checks if there are any arguments present + Present() bool + // Slice returns a copy of the internal slice + Slice() []string +} + +type Author struct { + Name string // The Authors name + Email string // The Authors email +} + Author represents someone who has contributed to a cli project. + +func (a *Author) String() string + String makes Author comply to the Stringer interface, to allow an easy print + in the templating process + +type BashCompleteFunc func(*Context) + BashCompleteFunc is an action to execute when the shell completion flag is + set + +type BeforeFunc func(*Context) error + BeforeFunc is an action to execute before any subcommands are run, but after + the context is ready if a non-nil error is returned, no subcommands are run + +type BoolFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value bool + Destination *bool + + Aliases []string + EnvVars []string +} + BoolFlag is a flag with type bool + +func (f *BoolFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *BoolFlag) Get(ctx *Context) bool + Get returns the flag’s value in the given Context. + +func (f *BoolFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *BoolFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *BoolFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *BoolFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *BoolFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *BoolFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *BoolFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *BoolFlag) Names() []string + Names returns the names of the flag + +func (f *BoolFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *BoolFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Command struct { + // The name of the command + Name string + // A list of aliases for the command + Aliases []string + // A short description of the usage of this command + Usage string + // Custom text to show on USAGE section of help + UsageText string + // A longer explanation of how the command works + Description string + // A short description of the arguments of this command + ArgsUsage string + // The category the command is part of + Category string + // The function to call when checking for bash command completions + BashComplete BashCompleteFunc + // An action to execute before any sub-subcommands are run, but after the context is ready + // If a non-nil error is returned, no sub-subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + // The function to call when this command is invoked + Action ActionFunc + // Execute this function if a usage error occurs. + OnUsageError OnUsageErrorFunc + // List of child commands + Subcommands []*Command + // List of flags to parse + Flags []Flag + // Treat all flags as normal arguments if true + SkipFlagParsing bool + // Boolean to hide built-in help command and help flag + HideHelp bool + // Boolean to hide built-in help command but keep help flag + // Ignored if HideHelp is true. + HideHelpCommand bool + // Boolean to hide this command from help or completion + Hidden bool + // Boolean to enable short-option handling so user can combine several + // single-character bool arguments into one + // i.e. foobar -o -v -> foobar -ov + UseShortOptionHandling bool + + // Full name of command for help, defaults to full command name, including parent commands. + HelpName string + + // CustomHelpTemplate the text template for the command help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomHelpTemplate string + // Has unexported fields. +} + Command is a subcommand for a cli.App. + +func (c *Command) FullName() string + FullName returns the full name of the command. For subcommands this ensures + that parent commands are part of the command path + +func (c *Command) HasName(name string) bool + HasName returns true if Command.Name matches given name + +func (c *Command) Names() []string + Names returns the names including short names and aliases. + +func (c *Command) Run(ctx *Context) (err error) + Run invokes the command given the context, parses ctx.Args() to generate + command-specific flags + +func (c *Command) VisibleFlags() []Flag + VisibleFlags returns a slice of the Flags with Hidden=false + +type CommandCategories interface { + // AddCommand adds a command to a category, creating a new category if necessary. + AddCommand(category string, command *Command) + // categories returns a copy of the category slice + Categories() []CommandCategory +} + CommandCategories interface allows for category manipulation + +type CommandCategory interface { + // Name returns the category name string + Name() string + // VisibleCommands returns a slice of the Commands with Hidden=false + VisibleCommands() []*Command +} + CommandCategory is a category containing commands. + +type CommandNotFoundFunc func(*Context, string) + CommandNotFoundFunc is executed if the proper command cannot be found + +type Commands []*Command + +type CommandsByName []*Command + +func (c CommandsByName) Len() int + +func (c CommandsByName) Less(i, j int) bool + +func (c CommandsByName) Swap(i, j int) + +type Context struct { + context.Context + App *App + Command *Command + + // Has unexported fields. +} + Context is a type that is passed through to each Handler action in a cli + application. Context can be used to retrieve context-specific args and + parsed command-line options. + +func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context + NewContext creates a new context. For use in when invoking an App or Command + action. + +func (cCtx *Context) Args() Args + Args returns the command line arguments associated with the context. + +func (cCtx *Context) Bool(name string) bool + Bool looks up the value of a local BoolFlag, returns false if not found + +func (cCtx *Context) Duration(name string) time.Duration + Duration looks up the value of a local DurationFlag, returns 0 if not found + +func (cCtx *Context) FlagNames() []string + FlagNames returns a slice of flag names used by the this context and all of + its parent contexts. + +func (cCtx *Context) Float64(name string) float64 + Float64 looks up the value of a local Float64Flag, returns 0 if not found + +func (cCtx *Context) Float64Slice(name string) []float64 + Float64Slice looks up the value of a local Float64SliceFlag, returns nil if + not found + +func (cCtx *Context) Generic(name string) interface{} + Generic looks up the value of a local GenericFlag, returns nil if not found + +func (cCtx *Context) Int(name string) int + Int looks up the value of a local IntFlag, returns 0 if not found + +func (cCtx *Context) Int64(name string) int64 + Int64 looks up the value of a local Int64Flag, returns 0 if not found + +func (cCtx *Context) Int64Slice(name string) []int64 + Int64Slice looks up the value of a local Int64SliceFlag, returns nil if not + found + +func (cCtx *Context) IntSlice(name string) []int + IntSlice looks up the value of a local IntSliceFlag, returns nil if not + found + +func (cCtx *Context) IsSet(name string) bool + IsSet determines if the flag was actually set + +func (cCtx *Context) Lineage() []*Context + Lineage returns *this* context and all of its ancestor contexts in order + from child to parent + +func (cCtx *Context) LocalFlagNames() []string + LocalFlagNames returns a slice of flag names used in this context. + +func (cCtx *Context) NArg() int + NArg returns the number of the command line arguments. + +func (cCtx *Context) NumFlags() int + NumFlags returns the number of flags set + +func (cCtx *Context) Path(name string) string + Path looks up the value of a local PathFlag, returns "" if not found + +func (cCtx *Context) Set(name, value string) error + Set sets a context flag to a value. + +func (cCtx *Context) String(name string) string + String looks up the value of a local StringFlag, returns "" if not found + +func (cCtx *Context) StringSlice(name string) []string + StringSlice looks up the value of a local StringSliceFlag, returns nil if + not found + +func (cCtx *Context) Timestamp(name string) *time.Time + Timestamp gets the timestamp from a flag name + +func (cCtx *Context) Uint(name string) uint + Uint looks up the value of a local UintFlag, returns 0 if not found + +func (cCtx *Context) Uint64(name string) uint64 + Uint64 looks up the value of a local Uint64Flag, returns 0 if not found + +func (cCtx *Context) Value(name string) interface{} + Value returns the value of the flag corresponding to `name` + +type DocGenerationFlag interface { + Flag + + // TakesValue returns true if the flag takes a value, otherwise false + TakesValue() bool + + // GetUsage returns the usage string for the flag + GetUsage() string + + // GetValue returns the flags value as string representation and an empty + // string if the flag takes no value at all. + GetValue() string + + // GetDefaultText returns the default text for this flag + GetDefaultText() string + + // GetEnvVars returns the env vars for this flag + GetEnvVars() []string +} + DocGenerationFlag is an interface that allows documentation generation for + the flag + +type DurationFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value time.Duration + Destination *time.Duration + + Aliases []string + EnvVars []string +} + DurationFlag is a flag with type time.Duration + +func (f *DurationFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *DurationFlag) Get(ctx *Context) time.Duration + Get returns the flag’s value in the given Context. + +func (f *DurationFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *DurationFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *DurationFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *DurationFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *DurationFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *DurationFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *DurationFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *DurationFlag) Names() []string + Names returns the names of the flag + +func (f *DurationFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *DurationFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type ErrorFormatter interface { + Format(s fmt.State, verb rune) +} + ErrorFormatter is the interface that will suitably format the error output + +type ExitCoder interface { + error + ExitCode() int +} + ExitCoder is the interface checked by `App` and `Command` for a custom exit + code + +func Exit(message interface{}, exitCode int) ExitCoder + Exit wraps a message and exit code into an error, which by default is + handled with a call to os.Exit during default error handling. + + This is the simplest way to trigger a non-zero exit code for an App without + having to call os.Exit manually. During testing, this behavior can be + avoided by overiding the ExitErrHandler function on an App or the + package-global OsExiter function. + +func NewExitError(message interface{}, exitCode int) ExitCoder + NewExitError calls Exit to create a new ExitCoder. + + Deprecated: This function is a duplicate of Exit and will eventually be + removed. + +type ExitErrHandlerFunc func(cCtx *Context, err error) + ExitErrHandlerFunc is executed if provided in order to handle exitError + values returned by Actions and Before/After functions. + +type Flag interface { + fmt.Stringer + // Apply Flag settings to the given flag set + Apply(*flag.FlagSet) error + Names() []string + IsSet() bool +} + Flag is a common interface related to parsing flags in cli. For more + advanced flag parsing techniques, it is recommended that this interface be + implemented. + +var BashCompletionFlag Flag = &BoolFlag{ + Name: "generate-bash-completion", + Hidden: true, +} + BashCompletionFlag enables bash-completion for all commands and subcommands + +var HelpFlag Flag = &BoolFlag{ + Name: "help", + Aliases: []string{"h"}, + Usage: "show help", +} + HelpFlag prints the help for all commands and subcommands. Set to nil to + disable the flag. The subcommand will still be added unless HideHelp or + HideHelpCommand is set to true. + +var VersionFlag Flag = &BoolFlag{ + Name: "version", + Aliases: []string{"v"}, + Usage: "print the version", +} + VersionFlag prints the version for the application + +type FlagEnvHintFunc func(envVars []string, str string) string + FlagEnvHintFunc is used by the default FlagStringFunc to annotate flag help + with the environment variable details. + +var FlagEnvHinter FlagEnvHintFunc = withEnvHint + FlagEnvHinter annotates flag help message with the environment variable + details. This is used by the default FlagStringer. + +type FlagFileHintFunc func(filePath, str string) string + FlagFileHintFunc is used by the default FlagStringFunc to annotate flag help + with the file path details. + +var FlagFileHinter FlagFileHintFunc = withFileHint + FlagFileHinter annotates flag help message with the environment variable + details. This is used by the default FlagStringer. + +type FlagNamePrefixFunc func(fullName []string, placeholder string) string + FlagNamePrefixFunc is used by the default FlagStringFunc to create prefix + text for a flag's full name. + +var FlagNamePrefixer FlagNamePrefixFunc = prefixedNames + FlagNamePrefixer converts a full flag name and its placeholder into the help + message flag prefix. This is used by the default FlagStringer. + +type FlagStringFunc func(Flag) string + FlagStringFunc is used by the help generation to display a flag, which is + expected to be a single line. + +var FlagStringer FlagStringFunc = stringifyFlag + FlagStringer converts a flag definition to a string. This is used by help to + display a flag. + +type FlagsByName []Flag + FlagsByName is a slice of Flag. + +func (f FlagsByName) Len() int + +func (f FlagsByName) Less(i, j int) bool + +func (f FlagsByName) Swap(i, j int) + +type Float64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value float64 + Destination *float64 + + Aliases []string + EnvVars []string +} + Float64Flag is a flag with type float64 + +func (f *Float64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Float64Flag) Get(ctx *Context) float64 + Get returns the flag’s value in the given Context. + +func (f *Float64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Float64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Float64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Float64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Float64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Float64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Float64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Float64Flag) Names() []string + Names returns the names of the flag + +func (f *Float64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Float64Slice struct { + // Has unexported fields. +} + Float64Slice wraps []float64 to satisfy flag.Value + +func NewFloat64Slice(defaults ...float64) *Float64Slice + NewFloat64Slice makes a *Float64Slice with default values + +func (f *Float64Slice) Get() interface{} + Get returns the slice of float64s set by this flag + +func (f *Float64Slice) Serialize() string + Serialize allows Float64Slice to fulfill Serializer + +func (f *Float64Slice) Set(value string) error + Set parses the value into a float64 and appends it to the list of values + +func (f *Float64Slice) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64Slice) Value() []float64 + Value returns the slice of float64s set by this flag + +type Float64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Float64Slice + Destination *Float64Slice + + Aliases []string + EnvVars []string +} + Float64SliceFlag is a flag with type Float64Slice + +func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Float64SliceFlag) Get(ctx *Context) []float64 + Get returns the flag’s value in the given Context. + +func (f *Float64SliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Float64SliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Float64SliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Float64SliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Float64SliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Float64SliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Float64SliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Float64SliceFlag) Names() []string + Names returns the names of the flag + +func (f *Float64SliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64SliceFlag) TakesValue() bool + TakesValue returns true if the flag takes a value, otherwise false + +type Generic interface { + Set(value string) error + String() string +} + Generic is a generic parseable type identified by a specific flag + +type GenericFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Generic + Destination *Generic + + Aliases []string + EnvVars []string + + TakesFile bool +} + GenericFlag is a flag with type Generic + +func (f GenericFlag) Apply(set *flag.FlagSet) error + Apply takes the flagset and calls Set on the generic flag with the value + provided by the user for parsing by the flag + +func (f *GenericFlag) Get(ctx *Context) interface{} + Get returns the flag’s value in the given Context. + +func (f *GenericFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *GenericFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *GenericFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *GenericFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *GenericFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *GenericFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *GenericFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *GenericFlag) Names() []string + Names returns the names of the flag + +func (f *GenericFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *GenericFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Int64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int64 + Destination *int64 + + Aliases []string + EnvVars []string +} + Int64Flag is a flag with type int64 + +func (f *Int64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Int64Flag) Get(ctx *Context) int64 + Get returns the flag’s value in the given Context. + +func (f *Int64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Int64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Int64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Int64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Int64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Int64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Int64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Int64Flag) Names() []string + Names returns the names of the flag + +func (f *Int64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Int64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Int64Slice struct { + // Has unexported fields. +} + Int64Slice wraps []int64 to satisfy flag.Value + +func NewInt64Slice(defaults ...int64) *Int64Slice + NewInt64Slice makes an *Int64Slice with default values + +func (i *Int64Slice) Get() interface{} + Get returns the slice of ints set by this flag + +func (i *Int64Slice) Serialize() string + Serialize allows Int64Slice to fulfill Serializer + +func (i *Int64Slice) Set(value string) error + Set parses the value into an integer and appends it to the list of values + +func (i *Int64Slice) String() string + String returns a readable representation of this value (for usage defaults) + +func (i *Int64Slice) Value() []int64 + Value returns the slice of ints set by this flag + +type Int64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Int64Slice + Destination *Int64Slice + + Aliases []string + EnvVars []string +} + Int64SliceFlag is a flag with type Int64Slice + +func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Int64SliceFlag) Get(ctx *Context) []int64 + Get returns the flag’s value in the given Context. + +func (f *Int64SliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Int64SliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f Int64SliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Int64SliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Int64SliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Int64SliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Int64SliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Int64SliceFlag) Names() []string + Names returns the names of the flag + +func (f *Int64SliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Int64SliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type IntFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int + Destination *int + + Aliases []string + EnvVars []string +} + IntFlag is a flag with type int + +func (f *IntFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *IntFlag) Get(ctx *Context) int + Get returns the flag’s value in the given Context. + +func (f *IntFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *IntFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *IntFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *IntFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *IntFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *IntFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *IntFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *IntFlag) Names() []string + Names returns the names of the flag + +func (f *IntFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *IntFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type IntSlice struct { + // Has unexported fields. +} + IntSlice wraps []int to satisfy flag.Value + +func NewIntSlice(defaults ...int) *IntSlice + NewIntSlice makes an *IntSlice with default values + +func (i *IntSlice) Get() interface{} + Get returns the slice of ints set by this flag + +func (i *IntSlice) Serialize() string + Serialize allows IntSlice to fulfill Serializer + +func (i *IntSlice) Set(value string) error + Set parses the value into an integer and appends it to the list of values + +func (i *IntSlice) SetInt(value int) + TODO: Consistently have specific Set function for Int64 and Float64 ? SetInt + directly adds an integer to the list of values + +func (i *IntSlice) String() string + String returns a readable representation of this value (for usage defaults) + +func (i *IntSlice) Value() []int + Value returns the slice of ints set by this flag + +type IntSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *IntSlice + Destination *IntSlice + + Aliases []string + EnvVars []string +} + IntSliceFlag is a flag with type IntSlice + +func (f *IntSliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *IntSliceFlag) Get(ctx *Context) []int + Get returns the flag’s value in the given Context. + +func (f *IntSliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *IntSliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f IntSliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *IntSliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *IntSliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *IntSliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *IntSliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *IntSliceFlag) Names() []string + Names returns the names of the flag + +func (f *IntSliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *IntSliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type MultiError interface { + error + Errors() []error +} + MultiError is an error that wraps multiple errors. + +type OnUsageErrorFunc func(cCtx *Context, err error, isSubcommand bool) error + OnUsageErrorFunc is executed if a usage error occurs. This is useful for + displaying customized usage error messages. This function is able to replace + the original error messages. If this function is not set, the "Incorrect + usage" is displayed and the execution is interrupted. + +type Path = string + +type PathFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Path + Destination *Path + + Aliases []string + EnvVars []string + + TakesFile bool +} + PathFlag is a flag with type Path + +func (f *PathFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *PathFlag) Get(ctx *Context) string + Get returns the flag’s value in the given Context. + +func (f *PathFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *PathFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *PathFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *PathFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *PathFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *PathFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *PathFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *PathFlag) Names() []string + Names returns the names of the flag + +func (f *PathFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *PathFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type RequiredFlag interface { + Flag + + IsRequired() bool +} + RequiredFlag is an interface that allows us to mark flags as required it + allows flags required flags to be backwards compatible with the Flag + interface + +type Serializer interface { + Serialize() string +} + Serializer is used to circumvent the limitations of flag.FlagSet.Set + +type StringFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value string + Destination *string + + Aliases []string + EnvVars []string + + TakesFile bool +} + StringFlag is a flag with type string + +func (f *StringFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *StringFlag) Get(ctx *Context) string + Get returns the flag’s value in the given Context. + +func (f *StringFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *StringFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *StringFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *StringFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *StringFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *StringFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *StringFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *StringFlag) Names() []string + Names returns the names of the flag + +func (f *StringFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *StringFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type StringSlice struct { + // Has unexported fields. +} + StringSlice wraps a []string to satisfy flag.Value + +func NewStringSlice(defaults ...string) *StringSlice + NewStringSlice creates a *StringSlice with default values + +func (s *StringSlice) Get() interface{} + Get returns the slice of strings set by this flag + +func (s *StringSlice) Serialize() string + Serialize allows StringSlice to fulfill Serializer + +func (s *StringSlice) Set(value string) error + Set appends the string value to the list of values + +func (s *StringSlice) String() string + String returns a readable representation of this value (for usage defaults) + +func (s *StringSlice) Value() []string + Value returns the slice of strings set by this flag + +type StringSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *StringSlice + Destination *StringSlice + + Aliases []string + EnvVars []string + + TakesFile bool +} + StringSliceFlag is a flag with type StringSlice + +func (f *StringSliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *StringSliceFlag) Get(ctx *Context) []string + Get returns the flag’s value in the given Context. + +func (f *StringSliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *StringSliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *StringSliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *StringSliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *StringSliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *StringSliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *StringSliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *StringSliceFlag) Names() []string + Names returns the names of the flag + +func (f *StringSliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *StringSliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Timestamp struct { + // Has unexported fields. +} + Timestamp wrap to satisfy golang's flag interface. + +func NewTimestamp(timestamp time.Time) *Timestamp + Timestamp constructor + +func (t *Timestamp) Get() interface{} + Get returns the flag structure + +func (t *Timestamp) Set(value string) error + Parses the string value to timestamp + +func (t *Timestamp) SetLayout(layout string) + Set the timestamp string layout for future parsing + +func (t *Timestamp) SetTimestamp(value time.Time) + Set the timestamp value directly + +func (t *Timestamp) String() string + String returns a readable representation of this value (for usage defaults) + +func (t *Timestamp) Value() *time.Time + Value returns the timestamp value stored in the flag + +type TimestampFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Timestamp + Destination *Timestamp + + Aliases []string + EnvVars []string + + Layout string +} + TimestampFlag is a flag with type Timestamp + +func (f *TimestampFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *TimestampFlag) Get(ctx *Context) *time.Time + Get returns the flag’s value in the given Context. + +func (f *TimestampFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *TimestampFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *TimestampFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *TimestampFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *TimestampFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *TimestampFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *TimestampFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *TimestampFlag) Names() []string + Names returns the names of the flag + +func (f *TimestampFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *TimestampFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Uint64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint64 + Destination *uint64 + + Aliases []string + EnvVars []string +} + Uint64Flag is a flag with type uint64 + +func (f *Uint64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Uint64Flag) Get(ctx *Context) uint64 + Get returns the flag’s value in the given Context. + +func (f *Uint64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Uint64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Uint64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Uint64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Uint64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Uint64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Uint64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Uint64Flag) Names() []string + Names returns the names of the flag + +func (f *Uint64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Uint64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type UintFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint + Destination *uint + + Aliases []string + EnvVars []string +} + UintFlag is a flag with type uint + +func (f *UintFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *UintFlag) Get(ctx *Context) uint + Get returns the flag’s value in the given Context. + +func (f *UintFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *UintFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *UintFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *UintFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *UintFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *UintFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *UintFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *UintFlag) Names() []string + Names returns the names of the flag + +func (f *UintFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *UintFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type VisibleFlag interface { + Flag + + // IsVisible returns true if the flag is not hidden, otherwise false + IsVisible() bool +} + VisibleFlag is an interface that allows to check if a flag is visible + +package altsrc // import "github.com/urfave/cli/v2/altsrc" + + +FUNCTIONS + +func ApplyInputSourceValues(cCtx *cli.Context, inputSourceContext InputSourceContext, flags []cli.Flag) error + ApplyInputSourceValues iterates over all provided flags and executes + ApplyInputSourceValue on flags implementing the FlagInputSourceExtension + interface to initialize these flags to an alternate input source. + +func InitInputSource(flags []cli.Flag, createInputSource func() (InputSourceContext, error)) cli.BeforeFunc + InitInputSource is used to to setup an InputSourceContext on a cli.Command + Before method. It will create a new input source based on the func provided. + If there is no error it will then apply the new input source to any flags + that are supported by the input source + +func InitInputSourceWithContext(flags []cli.Flag, createInputSource func(cCtx *cli.Context) (InputSourceContext, error)) cli.BeforeFunc + InitInputSourceWithContext is used to to setup an InputSourceContext on a + cli.Command Before method. It will create a new input source based on the + func provided with potentially using existing cli.Context values to + initialize itself. If there is no error it will then apply the new input + source to any flags that are supported by the input source + +func NewJSONSourceFromFlagFunc(flag string) func(c *cli.Context) (InputSourceContext, error) + NewJSONSourceFromFlagFunc returns a func that takes a cli.Context and + returns an InputSourceContext suitable for retrieving config variables from + a file containing JSON data with the file name defined by the given flag. + +func NewTomlSourceFromFlagFunc(flagFileName string) func(cCtx *cli.Context) (InputSourceContext, error) + NewTomlSourceFromFlagFunc creates a new TOML InputSourceContext from a + provided flag name and source context. + +func NewYamlSourceFromFlagFunc(flagFileName string) func(cCtx *cli.Context) (InputSourceContext, error) + NewYamlSourceFromFlagFunc creates a new Yaml InputSourceContext from a + provided flag name and source context. + + +TYPES + +type BoolFlag struct { + *cli.BoolFlag + // Has unexported fields. +} + BoolFlag is the flag type that wraps cli.BoolFlag to allow for other values + to be specified + +func NewBoolFlag(fl *cli.BoolFlag) *BoolFlag + NewBoolFlag creates a new BoolFlag + +func (f *BoolFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + BoolFlag.Apply + +func (f *BoolFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Bool value to the flagSet if required + +type DurationFlag struct { + *cli.DurationFlag + // Has unexported fields. +} + DurationFlag is the flag type that wraps cli.DurationFlag to allow for other + values to be specified + +func NewDurationFlag(fl *cli.DurationFlag) *DurationFlag + NewDurationFlag creates a new DurationFlag + +func (f *DurationFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + DurationFlag.Apply + +func (f *DurationFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Duration value to the flagSet if required + +type FlagInputSourceExtension interface { + cli.Flag + ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error +} + FlagInputSourceExtension is an extension interface of cli.Flag that allows a + value to be set on the existing parsed flags. + +type Float64Flag struct { + *cli.Float64Flag + // Has unexported fields. +} + Float64Flag is the flag type that wraps cli.Float64Flag to allow for other + values to be specified + +func NewFloat64Flag(fl *cli.Float64Flag) *Float64Flag + NewFloat64Flag creates a new Float64Flag + +func (f *Float64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Float64Flag.Apply + +func (f *Float64Flag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Float64 value to the flagSet if required + +type Float64SliceFlag struct { + *cli.Float64SliceFlag + // Has unexported fields. +} + Float64SliceFlag is the flag type that wraps cli.Float64SliceFlag to allow + for other values to be specified + +func NewFloat64SliceFlag(fl *cli.Float64SliceFlag) *Float64SliceFlag + NewFloat64SliceFlag creates a new Float64SliceFlag + +func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Float64SliceFlag.Apply + +type GenericFlag struct { + *cli.GenericFlag + // Has unexported fields. +} + GenericFlag is the flag type that wraps cli.GenericFlag to allow for other + values to be specified + +func NewGenericFlag(fl *cli.GenericFlag) *GenericFlag + NewGenericFlag creates a new GenericFlag + +func (f *GenericFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + GenericFlag.Apply + +func (f *GenericFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a generic value to the flagSet if required + +type InputSourceContext interface { + Source() string + + Int(name string) (int, error) + Duration(name string) (time.Duration, error) + Float64(name string) (float64, error) + String(name string) (string, error) + StringSlice(name string) ([]string, error) + IntSlice(name string) ([]int, error) + Generic(name string) (cli.Generic, error) + Bool(name string) (bool, error) + + // Has unexported methods. +} + InputSourceContext is an interface used to allow other input sources to be + implemented as needed. + + Source returns an identifier for the input source. In case of file source it + should return path to the file. + +func NewJSONSource(data []byte) (InputSourceContext, error) + NewJSONSource returns an InputSourceContext suitable for retrieving config + variables from raw JSON data. + +func NewJSONSourceFromFile(f string) (InputSourceContext, error) + NewJSONSourceFromFile returns an InputSourceContext suitable for retrieving + config variables from a file (or url) containing JSON data. + +func NewJSONSourceFromReader(r io.Reader) (InputSourceContext, error) + NewJSONSourceFromReader returns an InputSourceContext suitable for + retrieving config variables from an io.Reader that returns JSON data. + +func NewTomlSourceFromFile(file string) (InputSourceContext, error) + NewTomlSourceFromFile creates a new TOML InputSourceContext from a filepath. + +func NewYamlSourceFromFile(file string) (InputSourceContext, error) + NewYamlSourceFromFile creates a new Yaml InputSourceContext from a filepath. + +type Int64Flag struct { + *cli.Int64Flag + // Has unexported fields. +} + Int64Flag is the flag type that wraps cli.Int64Flag to allow for other + values to be specified + +func NewInt64Flag(fl *cli.Int64Flag) *Int64Flag + NewInt64Flag creates a new Int64Flag + +func (f *Int64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Int64Flag.Apply + +type Int64SliceFlag struct { + *cli.Int64SliceFlag + // Has unexported fields. +} + Int64SliceFlag is the flag type that wraps cli.Int64SliceFlag to allow for + other values to be specified + +func NewInt64SliceFlag(fl *cli.Int64SliceFlag) *Int64SliceFlag + NewInt64SliceFlag creates a new Int64SliceFlag + +func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Int64SliceFlag.Apply + +type IntFlag struct { + *cli.IntFlag + // Has unexported fields. +} + IntFlag is the flag type that wraps cli.IntFlag to allow for other values to + be specified + +func NewIntFlag(fl *cli.IntFlag) *IntFlag + NewIntFlag creates a new IntFlag + +func (f *IntFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + IntFlag.Apply + +func (f *IntFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a int value to the flagSet if required + +type IntSliceFlag struct { + *cli.IntSliceFlag + // Has unexported fields. +} + IntSliceFlag is the flag type that wraps cli.IntSliceFlag to allow for other + values to be specified + +func NewIntSliceFlag(fl *cli.IntSliceFlag) *IntSliceFlag + NewIntSliceFlag creates a new IntSliceFlag + +func (f *IntSliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + IntSliceFlag.Apply + +func (f *IntSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a IntSlice value if required + +type MapInputSource struct { + // Has unexported fields. +} + MapInputSource implements InputSourceContext to return data from the map + that is loaded. + +func NewMapInputSource(file string, valueMap map[interface{}]interface{}) *MapInputSource + NewMapInputSource creates a new MapInputSource for implementing custom input + sources. + +func (fsm *MapInputSource) Bool(name string) (bool, error) + Bool returns an bool from the map otherwise returns false + +func (fsm *MapInputSource) Duration(name string) (time.Duration, error) + Duration returns a duration from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) Float64(name string) (float64, error) + Float64 returns an float64 from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) Generic(name string) (cli.Generic, error) + Generic returns an cli.Generic from the map if it exists otherwise returns + nil + +func (fsm *MapInputSource) Int(name string) (int, error) + Int returns an int from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) IntSlice(name string) ([]int, error) + IntSlice returns an []int from the map if it exists otherwise returns nil + +func (fsm *MapInputSource) Source() string + Source returns the path of the source file + +func (fsm *MapInputSource) String(name string) (string, error) + String returns a string from the map if it exists otherwise returns an empty + string + +func (fsm *MapInputSource) StringSlice(name string) ([]string, error) + StringSlice returns an []string from the map if it exists otherwise returns + nil + +type PathFlag struct { + *cli.PathFlag + // Has unexported fields. +} + PathFlag is the flag type that wraps cli.PathFlag to allow for other values + to be specified + +func NewPathFlag(fl *cli.PathFlag) *PathFlag + NewPathFlag creates a new PathFlag + +func (f *PathFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + PathFlag.Apply + +func (f *PathFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Path value to the flagSet if required + +type StringFlag struct { + *cli.StringFlag + // Has unexported fields. +} + StringFlag is the flag type that wraps cli.StringFlag to allow for other + values to be specified + +func NewStringFlag(fl *cli.StringFlag) *StringFlag + NewStringFlag creates a new StringFlag + +func (f *StringFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + StringFlag.Apply + +func (f *StringFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a String value to the flagSet if required + +type StringSliceFlag struct { + *cli.StringSliceFlag + // Has unexported fields. +} + StringSliceFlag is the flag type that wraps cli.StringSliceFlag to allow for + other values to be specified + +func NewStringSliceFlag(fl *cli.StringSliceFlag) *StringSliceFlag + NewStringSliceFlag creates a new StringSliceFlag + +func (f *StringSliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + StringSliceFlag.Apply + +func (f *StringSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a StringSlice value to the flagSet if required + +type Uint64Flag struct { + *cli.Uint64Flag + // Has unexported fields. +} + Uint64Flag is the flag type that wraps cli.Uint64Flag to allow for other + values to be specified + +func NewUint64Flag(fl *cli.Uint64Flag) *Uint64Flag + NewUint64Flag creates a new Uint64Flag + +func (f *Uint64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Uint64Flag.Apply + +type UintFlag struct { + *cli.UintFlag + // Has unexported fields. +} + UintFlag is the flag type that wraps cli.UintFlag to allow for other values + to be specified + +func NewUintFlag(fl *cli.UintFlag) *UintFlag + NewUintFlag creates a new UintFlag + +func (f *UintFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + UintFlag.Apply + diff --git a/internal/build/build.go b/internal/build/build.go index 0e9391b4fb..929ab0fbf9 100644 --- a/internal/build/build.go +++ b/internal/build/build.go @@ -10,11 +10,29 @@ import ( "math" "os" "os/exec" + "path/filepath" "strings" "github.com/urfave/cli/v2" ) +const ( + badNewsEmoji = "🚨" + goodNewsEmoji = "✨" + checksPassedEmoji = "✅" + + v2diffWarning = ` +# The unified diff above indicates that the public API surface area +# has changed. If you feel that the changes are acceptable and adhere +# to the semantic versioning promise of the v2.x series described in +# docs/CONTRIBUTING.md, please run the following command to promote +# the current go docs: +# +# make v2approve +# +` +) + func main() { top, err := func() (string, error) { if v, err := sh("git", "rev-parse", "--show-toplevel"); err == nil { @@ -57,6 +75,17 @@ func main() { Name: "generate", Action: GenerateActionFunc, }, + { + Name: "v2diff", + Flags: []cli.Flag{ + &cli.BoolFlag{Name: "color", Value: false}, + }, + Action: V2Diff, + }, + { + Name: "v2approve", + Action: V2Approve, + }, } app.Flags = []cli.Flag{ &cli.StringFlag{ @@ -206,9 +235,6 @@ func checkBinarySizeActionFunc(c *cli.Context) (err error) { helloSourceFilePath = "./internal/example-hello-world/example-hello-world.go" helloBuiltFilePath = "./internal/example-hello-world/built-example" desiredMaxBinarySize = 2.2 - badNewsEmoji = "🚨" - goodNewsEmoji = "✨" - checksPassedEmoji = "✅" mbStringFormatter = "%.1fMB" ) @@ -290,9 +316,68 @@ func checkBinarySizeActionFunc(c *cli.Context) (err error) { } func GenerateActionFunc(cCtx *cli.Context) error { + top := cCtx.Path("top") + + cliDocs, err := sh("go", "doc", "-all", top) + if err != nil { + return err + } + + altsrcDocs, err := sh("go", "doc", "-all", filepath.Join(top, "altsrc")) + if err != nil { + return err + } + + if err := os.WriteFile( + filepath.Join(top, "godoc-current.txt"), + []byte(cliDocs+altsrcDocs), + 0644, + ); err != nil { + return err + } + return runCmd("go", "generate", cCtx.Path("top")+"/...") } +func V2Diff(cCtx *cli.Context) error { + os.Chdir(cCtx.Path("top")) + + err := runCmd( + "diff", + "--ignore-all-space", + "--minimal", + "--color="+func() string { + if cCtx.Bool("color") { + return "always" + } + return "auto" + }(), + "--unified", + "--label=a/godoc", + filepath.Join("testdata", "godoc-v2.x.txt"), + "--label=b/godoc", + "godoc-current.txt", + ) + + if err != nil { + fmt.Printf("# %v ---> Hey! <---\n", badNewsEmoji) + fmt.Println(strings.TrimSpace(v2diffWarning)) + } + + return err +} + +func V2Approve(cCtx *cli.Context) error { + top := cCtx.Path("top") + + return runCmd( + "cp", + "-v", + filepath.Join(top, "godoc-current.txt"), + filepath.Join(top, "testdata", "godoc-v2.x.txt"), + ) +} + func getSize(sourcePath string, builtPath string, tags string) (size int64, err error) { // build example binary err = runCmd("go", "build", "-tags", tags, "-o", builtPath, "-ldflags", "-s -w", sourcePath) diff --git a/testdata/godoc-v2.x.txt b/testdata/godoc-v2.x.txt new file mode 100644 index 0000000000..1a9ab238ad --- /dev/null +++ b/testdata/godoc-v2.x.txt @@ -0,0 +1,2090 @@ +package cli // import "github.com/urfave/cli/v2" + +Package cli provides a minimal framework for creating and organizing command +line Go applications. cli is designed to be easy to understand and write, +the most simple cli application can be written as follows: + + func main() { + (&cli.App{}).Run(os.Args) + } + +Of course this application does not do much, so let's make this an actual +application: + + func main() { + app := &cli.App{ + Name: "greet", + Usage: "say a greeting", + Action: func(c *cli.Context) error { + fmt.Println("Greetings") + return nil + }, + } + + app.Run(os.Args) + } + +VARIABLES + +var AppHelpTemplate = `NAME: + {{.Name}}{{if .Usage}} - {{.Usage}}{{end}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}} + +VERSION: + {{.Version}}{{end}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}}{{if len .Authors}} + +AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}: + {{range $index, $author := .Authors}}{{if $index}} + {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{end}}{{if .VisibleFlags}} + +GLOBAL OPTIONS: + {{range $index, $option := .VisibleFlags}}{{if $index}} + {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}} + +COPYRIGHT: + {{.Copyright}}{{end}} +` + AppHelpTemplate is the text template for the Default help topic. cli.go uses + text/template to render templates. You can render custom help text by + setting this variable. + +var CommandHelpTemplate = `NAME: + {{.HelpName}} - {{.Usage}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Category}} + +CATEGORY: + {{.Category}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}}{{if .VisibleFlags}} + +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + CommandHelpTemplate is the text template for the command help topic. cli.go + uses text/template to render templates. You can render custom help text by + setting this variable. + +var ErrWriter io.Writer = os.Stderr + ErrWriter is used to write errors to the user. This can be anything + implementing the io.Writer interface and defaults to os.Stderr. + +var FishCompletionTemplate = `# {{ .App.Name }} fish shell completion + +function __fish_{{ .App.Name }}_no_subcommand --description 'Test if there has been any subcommand yet' + for i in (commandline -opc) + if contains -- $i{{ range $v := .AllCommands }} {{ $v }}{{ end }} + return 1 + end + end + return 0 +end + +{{ range $v := .Completions }}{{ $v }} +{{ end }}` +var MarkdownDocTemplate = `{{if gt .SectionNum 0}}% {{ .App.Name }} {{ .SectionNum }} + +{{end}}# NAME + +{{ .App.Name }}{{ if .App.Usage }} - {{ .App.Usage }}{{ end }} + +# SYNOPSIS + +{{ .App.Name }} +{{ if .SynopsisArgs }} +` + "```" + ` +{{ range $v := .SynopsisArgs }}{{ $v }}{{ end }}` + "```" + ` +{{ end }}{{ if .App.Description }} +# DESCRIPTION + +{{ .App.Description }} +{{ end }} +**Usage**: + +` + "```" + `{{ if .App.UsageText }} +{{ .App.UsageText }} +{{ else }} +{{ .App.Name }} [GLOBAL OPTIONS] command [COMMAND OPTIONS] [ARGUMENTS...] +{{ end }}` + "```" + ` +{{ if .GlobalArgs }} +# GLOBAL OPTIONS +{{ range $v := .GlobalArgs }} +{{ $v }}{{ end }} +{{ end }}{{ if .Commands }} +# COMMANDS +{{ range $v := .Commands }} +{{ $v }}{{ end }}{{ end }}` +var OsExiter = os.Exit + OsExiter is the function used when the app exits. If not set defaults to + os.Exit. + +var SubcommandHelpTemplate = `NAME: + {{.HelpName}} - {{.Usage}} + +USAGE: + {{if .UsageText}}{{.UsageText | nindent 3 | trim}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Description}} + +DESCRIPTION: + {{.Description | nindent 3 | trim}}{{end}} + +COMMANDS:{{range .VisibleCategories}}{{if .Name}} + {{.Name}}:{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}} + {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}} + +OPTIONS: + {{range .VisibleFlags}}{{.}} + {{end}}{{end}} +` + SubcommandHelpTemplate is the text template for the subcommand help topic. + cli.go uses text/template to render templates. You can render custom help + text by setting this variable. + +var VersionPrinter = printVersion + VersionPrinter prints the version for the App + +var HelpPrinter helpPrinter = printHelp + HelpPrinter is a function that writes the help output. If not set + explicitly, this calls HelpPrinterCustom using only the default template + functions. + + If custom logic for printing help is required, this function can be + overridden. If the ExtraInfo field is defined on an App, this function + should not be modified, as HelpPrinterCustom will be used directly in order + to capture the extra information. + +var HelpPrinterCustom helpPrinterCustom = printHelpCustom + HelpPrinterCustom is a function that writes the help output. It is used as + the default implementation of HelpPrinter, and may be called directly if the + ExtraInfo field is set on an App. + + +FUNCTIONS + +func DefaultAppComplete(cCtx *Context) + DefaultAppComplete prints the list of subcommands as the default app + completion method + +func DefaultCompleteWithFlags(cmd *Command) func(cCtx *Context) +func FlagNames(name string, aliases []string) []string +func HandleAction(action interface{}, cCtx *Context) (err error) + HandleAction attempts to figure out which Action signature was used. If it's + an ActionFunc or a func with the legacy signature for Action, the func is + run! + +func HandleExitCoder(err error) + HandleExitCoder handles errors implementing ExitCoder by printing their + message and calling OsExiter with the given exit code. + + If the given error instead implements MultiError, each error will be checked + for the ExitCoder interface, and OsExiter will be called with the last exit + code found, or exit code 1 if no ExitCoder is found. + + This function is the default error-handling behavior for an App. + +func ShowAppHelp(cCtx *Context) error + ShowAppHelp is an action that displays the help. + +func ShowAppHelpAndExit(c *Context, exitCode int) + ShowAppHelpAndExit - Prints the list of subcommands for the app and exits + with exit code. + +func ShowCommandCompletions(ctx *Context, command string) + ShowCommandCompletions prints the custom completions for a given command + +func ShowCommandHelp(ctx *Context, command string) error + ShowCommandHelp prints help for the given command + +func ShowCommandHelpAndExit(c *Context, command string, code int) + ShowCommandHelpAndExit - exits with code after showing help + +func ShowCompletions(cCtx *Context) + ShowCompletions prints the lists of commands within a given context + +func ShowSubcommandHelp(cCtx *Context) error + ShowSubcommandHelp prints help for the given subcommand + +func ShowSubcommandHelpAndExit(c *Context, exitCode int) + ShowSubcommandHelpAndExit - Prints help for the given subcommand and exits + with exit code. + +func ShowVersion(cCtx *Context) + ShowVersion prints the version number of the App + + +TYPES + +type ActionFunc func(*Context) error + ActionFunc is the action to execute when no subcommands are specified + +type AfterFunc func(*Context) error + AfterFunc is an action to execute after any subcommands are run, but after + the subcommand has finished it is run even if Action() panics + +type App struct { + // The name of the program. Defaults to path.Base(os.Args[0]) + Name string + // Full name of command for help, defaults to Name + HelpName string + // Description of the program. + Usage string + // Text to override the USAGE section of help + UsageText string + // Description of the program argument format. + ArgsUsage string + // Version of the program + Version string + // Description of the program + Description string + // List of commands to execute + Commands []*Command + // List of flags to parse + Flags []Flag + // Boolean to enable bash completion commands + EnableBashCompletion bool + // Boolean to hide built-in help command and help flag + HideHelp bool + // Boolean to hide built-in help command but keep help flag. + // Ignored if HideHelp is true. + HideHelpCommand bool + // Boolean to hide built-in version flag and the VERSION section of help + HideVersion bool + + // An action to execute when the shell completion flag is set + BashComplete BashCompleteFunc + // An action to execute before any subcommands are run, but after the context is ready + // If a non-nil error is returned, no subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + // The action to execute when no subcommands are specified + Action ActionFunc + // Execute this function if the proper command cannot be found + CommandNotFound CommandNotFoundFunc + // Execute this function if a usage error occurs + OnUsageError OnUsageErrorFunc + // Compilation date + Compiled time.Time + // List of all authors who contributed + Authors []*Author + // Copyright of the binary if any + Copyright string + // Reader reader to write input to (useful for tests) + Reader io.Reader + // Writer writer to write output to + Writer io.Writer + // ErrWriter writes error output + ErrWriter io.Writer + // ExitErrHandler processes any error encountered while running an App before + // it is returned to the caller. If no function is provided, HandleExitCoder + // is used as the default behavior. + ExitErrHandler ExitErrHandlerFunc + // Other custom info + Metadata map[string]interface{} + // Carries a function which returns app specific info. + ExtraInfo func() map[string]string + // CustomAppHelpTemplate the text template for app help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomAppHelpTemplate string + // Boolean to enable short-option handling so user can combine several + // single-character bool arguments into one + // i.e. foobar -o -v -> foobar -ov + UseShortOptionHandling bool + + // Has unexported fields. +} + App is the main structure of a cli application. It is recommended that an + app be created with the cli.NewApp() function + +func NewApp() *App + NewApp creates a new cli Application with some reasonable defaults for Name, + Usage, Version and Action. + +func (a *App) Command(name string) *Command + Command returns the named command on App. Returns nil if the command does + not exist + +func (a *App) Run(arguments []string) (err error) + Run is the entry point to the cli app. Parses the arguments slice and routes + to the proper flag/args combination + +func (a *App) RunAndExitOnError() + RunAndExitOnError calls .Run() and exits non-zero if an error was returned + + Deprecated: instead you should return an error that fulfills cli.ExitCoder + to cli.App.Run. This will cause the application to exit with the given error + code in the cli.ExitCoder + +func (a *App) RunAsSubcommand(ctx *Context) (err error) + RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() + to generate command-specific flags + +func (a *App) RunContext(ctx context.Context, arguments []string) (err error) + RunContext is like Run except it takes a Context that will be passed to its + commands and sub-commands. Through this, you can propagate timeouts and + cancellation requests + +func (a *App) Setup() + Setup runs initialization code to ensure all data structures are ready for + `Run` or inspection prior to `Run`. It is internally called by `Run`, but + will return early if setup has already happened. + +func (a *App) ToFishCompletion() (string, error) + ToFishCompletion creates a fish completion string for the `*App` The + function errors if either parsing or writing of the string fails. + +func (a *App) ToMan() (string, error) + ToMan creates a man page string for the `*App` The function errors if either + parsing or writing of the string fails. + +func (a *App) ToManWithSection(sectionNumber int) (string, error) + ToMan creates a man page string with section number for the `*App` The + function errors if either parsing or writing of the string fails. + +func (a *App) ToMarkdown() (string, error) + ToMarkdown creates a markdown string for the `*App` The function errors if + either parsing or writing of the string fails. + +func (a *App) VisibleCategories() []CommandCategory + VisibleCategories returns a slice of categories and commands that are + Hidden=false + +func (a *App) VisibleCommands() []*Command + VisibleCommands returns a slice of the Commands with Hidden=false + +func (a *App) VisibleFlags() []Flag + VisibleFlags returns a slice of the Flags with Hidden=false + +type Args interface { + // Get returns the nth argument, or else a blank string + Get(n int) string + // First returns the first argument, or else a blank string + First() string + // Tail returns the rest of the arguments (not the first one) + // or else an empty string slice + Tail() []string + // Len returns the length of the wrapped slice + Len() int + // Present checks if there are any arguments present + Present() bool + // Slice returns a copy of the internal slice + Slice() []string +} + +type Author struct { + Name string // The Authors name + Email string // The Authors email +} + Author represents someone who has contributed to a cli project. + +func (a *Author) String() string + String makes Author comply to the Stringer interface, to allow an easy print + in the templating process + +type BashCompleteFunc func(*Context) + BashCompleteFunc is an action to execute when the shell completion flag is + set + +type BeforeFunc func(*Context) error + BeforeFunc is an action to execute before any subcommands are run, but after + the context is ready if a non-nil error is returned, no subcommands are run + +type BoolFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value bool + Destination *bool + + Aliases []string + EnvVars []string +} + BoolFlag is a flag with type bool + +func (f *BoolFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *BoolFlag) Get(ctx *Context) bool + Get returns the flag’s value in the given Context. + +func (f *BoolFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *BoolFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *BoolFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *BoolFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *BoolFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *BoolFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *BoolFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *BoolFlag) Names() []string + Names returns the names of the flag + +func (f *BoolFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *BoolFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Command struct { + // The name of the command + Name string + // A list of aliases for the command + Aliases []string + // A short description of the usage of this command + Usage string + // Custom text to show on USAGE section of help + UsageText string + // A longer explanation of how the command works + Description string + // A short description of the arguments of this command + ArgsUsage string + // The category the command is part of + Category string + // The function to call when checking for bash command completions + BashComplete BashCompleteFunc + // An action to execute before any sub-subcommands are run, but after the context is ready + // If a non-nil error is returned, no sub-subcommands are run + Before BeforeFunc + // An action to execute after any subcommands are run, but after the subcommand has finished + // It is run even if Action() panics + After AfterFunc + // The function to call when this command is invoked + Action ActionFunc + // Execute this function if a usage error occurs. + OnUsageError OnUsageErrorFunc + // List of child commands + Subcommands []*Command + // List of flags to parse + Flags []Flag + // Treat all flags as normal arguments if true + SkipFlagParsing bool + // Boolean to hide built-in help command and help flag + HideHelp bool + // Boolean to hide built-in help command but keep help flag + // Ignored if HideHelp is true. + HideHelpCommand bool + // Boolean to hide this command from help or completion + Hidden bool + // Boolean to enable short-option handling so user can combine several + // single-character bool arguments into one + // i.e. foobar -o -v -> foobar -ov + UseShortOptionHandling bool + + // Full name of command for help, defaults to full command name, including parent commands. + HelpName string + + // CustomHelpTemplate the text template for the command help topic. + // cli.go uses text/template to render templates. You can + // render custom help text by setting this variable. + CustomHelpTemplate string + // Has unexported fields. +} + Command is a subcommand for a cli.App. + +func (c *Command) FullName() string + FullName returns the full name of the command. For subcommands this ensures + that parent commands are part of the command path + +func (c *Command) HasName(name string) bool + HasName returns true if Command.Name matches given name + +func (c *Command) Names() []string + Names returns the names including short names and aliases. + +func (c *Command) Run(ctx *Context) (err error) + Run invokes the command given the context, parses ctx.Args() to generate + command-specific flags + +func (c *Command) VisibleFlags() []Flag + VisibleFlags returns a slice of the Flags with Hidden=false + +type CommandCategories interface { + // AddCommand adds a command to a category, creating a new category if necessary. + AddCommand(category string, command *Command) + // categories returns a copy of the category slice + Categories() []CommandCategory +} + CommandCategories interface allows for category manipulation + +type CommandCategory interface { + // Name returns the category name string + Name() string + // VisibleCommands returns a slice of the Commands with Hidden=false + VisibleCommands() []*Command +} + CommandCategory is a category containing commands. + +type CommandNotFoundFunc func(*Context, string) + CommandNotFoundFunc is executed if the proper command cannot be found + +type Commands []*Command + +type CommandsByName []*Command + +func (c CommandsByName) Len() int + +func (c CommandsByName) Less(i, j int) bool + +func (c CommandsByName) Swap(i, j int) + +type Context struct { + context.Context + App *App + Command *Command + + // Has unexported fields. +} + Context is a type that is passed through to each Handler action in a cli + application. Context can be used to retrieve context-specific args and + parsed command-line options. + +func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context + NewContext creates a new context. For use in when invoking an App or Command + action. + +func (cCtx *Context) Args() Args + Args returns the command line arguments associated with the context. + +func (cCtx *Context) Bool(name string) bool + Bool looks up the value of a local BoolFlag, returns false if not found + +func (cCtx *Context) Duration(name string) time.Duration + Duration looks up the value of a local DurationFlag, returns 0 if not found + +func (cCtx *Context) FlagNames() []string + FlagNames returns a slice of flag names used by the this context and all of + its parent contexts. + +func (cCtx *Context) Float64(name string) float64 + Float64 looks up the value of a local Float64Flag, returns 0 if not found + +func (cCtx *Context) Float64Slice(name string) []float64 + Float64Slice looks up the value of a local Float64SliceFlag, returns nil if + not found + +func (cCtx *Context) Generic(name string) interface{} + Generic looks up the value of a local GenericFlag, returns nil if not found + +func (cCtx *Context) Int(name string) int + Int looks up the value of a local IntFlag, returns 0 if not found + +func (cCtx *Context) Int64(name string) int64 + Int64 looks up the value of a local Int64Flag, returns 0 if not found + +func (cCtx *Context) Int64Slice(name string) []int64 + Int64Slice looks up the value of a local Int64SliceFlag, returns nil if not + found + +func (cCtx *Context) IntSlice(name string) []int + IntSlice looks up the value of a local IntSliceFlag, returns nil if not + found + +func (cCtx *Context) IsSet(name string) bool + IsSet determines if the flag was actually set + +func (cCtx *Context) Lineage() []*Context + Lineage returns *this* context and all of its ancestor contexts in order + from child to parent + +func (cCtx *Context) LocalFlagNames() []string + LocalFlagNames returns a slice of flag names used in this context. + +func (cCtx *Context) NArg() int + NArg returns the number of the command line arguments. + +func (cCtx *Context) NumFlags() int + NumFlags returns the number of flags set + +func (cCtx *Context) Path(name string) string + Path looks up the value of a local PathFlag, returns "" if not found + +func (cCtx *Context) Set(name, value string) error + Set sets a context flag to a value. + +func (cCtx *Context) String(name string) string + String looks up the value of a local StringFlag, returns "" if not found + +func (cCtx *Context) StringSlice(name string) []string + StringSlice looks up the value of a local StringSliceFlag, returns nil if + not found + +func (cCtx *Context) Timestamp(name string) *time.Time + Timestamp gets the timestamp from a flag name + +func (cCtx *Context) Uint(name string) uint + Uint looks up the value of a local UintFlag, returns 0 if not found + +func (cCtx *Context) Uint64(name string) uint64 + Uint64 looks up the value of a local Uint64Flag, returns 0 if not found + +func (cCtx *Context) Value(name string) interface{} + Value returns the value of the flag corresponding to `name` + +type DocGenerationFlag interface { + Flag + + // TakesValue returns true if the flag takes a value, otherwise false + TakesValue() bool + + // GetUsage returns the usage string for the flag + GetUsage() string + + // GetValue returns the flags value as string representation and an empty + // string if the flag takes no value at all. + GetValue() string + + // GetDefaultText returns the default text for this flag + GetDefaultText() string + + // GetEnvVars returns the env vars for this flag + GetEnvVars() []string +} + DocGenerationFlag is an interface that allows documentation generation for + the flag + +type DurationFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value time.Duration + Destination *time.Duration + + Aliases []string + EnvVars []string +} + DurationFlag is a flag with type time.Duration + +func (f *DurationFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *DurationFlag) Get(ctx *Context) time.Duration + Get returns the flag’s value in the given Context. + +func (f *DurationFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *DurationFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *DurationFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *DurationFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *DurationFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *DurationFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *DurationFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *DurationFlag) Names() []string + Names returns the names of the flag + +func (f *DurationFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *DurationFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type ErrorFormatter interface { + Format(s fmt.State, verb rune) +} + ErrorFormatter is the interface that will suitably format the error output + +type ExitCoder interface { + error + ExitCode() int +} + ExitCoder is the interface checked by `App` and `Command` for a custom exit + code + +func Exit(message interface{}, exitCode int) ExitCoder + Exit wraps a message and exit code into an error, which by default is + handled with a call to os.Exit during default error handling. + + This is the simplest way to trigger a non-zero exit code for an App without + having to call os.Exit manually. During testing, this behavior can be + avoided by overiding the ExitErrHandler function on an App or the + package-global OsExiter function. + +func NewExitError(message interface{}, exitCode int) ExitCoder + NewExitError calls Exit to create a new ExitCoder. + + Deprecated: This function is a duplicate of Exit and will eventually be + removed. + +type ExitErrHandlerFunc func(cCtx *Context, err error) + ExitErrHandlerFunc is executed if provided in order to handle exitError + values returned by Actions and Before/After functions. + +type Flag interface { + fmt.Stringer + // Apply Flag settings to the given flag set + Apply(*flag.FlagSet) error + Names() []string + IsSet() bool +} + Flag is a common interface related to parsing flags in cli. For more + advanced flag parsing techniques, it is recommended that this interface be + implemented. + +var BashCompletionFlag Flag = &BoolFlag{ + Name: "generate-bash-completion", + Hidden: true, +} + BashCompletionFlag enables bash-completion for all commands and subcommands + +var HelpFlag Flag = &BoolFlag{ + Name: "help", + Aliases: []string{"h"}, + Usage: "show help", +} + HelpFlag prints the help for all commands and subcommands. Set to nil to + disable the flag. The subcommand will still be added unless HideHelp or + HideHelpCommand is set to true. + +var VersionFlag Flag = &BoolFlag{ + Name: "version", + Aliases: []string{"v"}, + Usage: "print the version", +} + VersionFlag prints the version for the application + +type FlagEnvHintFunc func(envVars []string, str string) string + FlagEnvHintFunc is used by the default FlagStringFunc to annotate flag help + with the environment variable details. + +var FlagEnvHinter FlagEnvHintFunc = withEnvHint + FlagEnvHinter annotates flag help message with the environment variable + details. This is used by the default FlagStringer. + +type FlagFileHintFunc func(filePath, str string) string + FlagFileHintFunc is used by the default FlagStringFunc to annotate flag help + with the file path details. + +var FlagFileHinter FlagFileHintFunc = withFileHint + FlagFileHinter annotates flag help message with the environment variable + details. This is used by the default FlagStringer. + +type FlagNamePrefixFunc func(fullName []string, placeholder string) string + FlagNamePrefixFunc is used by the default FlagStringFunc to create prefix + text for a flag's full name. + +var FlagNamePrefixer FlagNamePrefixFunc = prefixedNames + FlagNamePrefixer converts a full flag name and its placeholder into the help + message flag prefix. This is used by the default FlagStringer. + +type FlagStringFunc func(Flag) string + FlagStringFunc is used by the help generation to display a flag, which is + expected to be a single line. + +var FlagStringer FlagStringFunc = stringifyFlag + FlagStringer converts a flag definition to a string. This is used by help to + display a flag. + +type FlagsByName []Flag + FlagsByName is a slice of Flag. + +func (f FlagsByName) Len() int + +func (f FlagsByName) Less(i, j int) bool + +func (f FlagsByName) Swap(i, j int) + +type Float64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value float64 + Destination *float64 + + Aliases []string + EnvVars []string +} + Float64Flag is a flag with type float64 + +func (f *Float64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Float64Flag) Get(ctx *Context) float64 + Get returns the flag’s value in the given Context. + +func (f *Float64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Float64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Float64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Float64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Float64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Float64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Float64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Float64Flag) Names() []string + Names returns the names of the flag + +func (f *Float64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Float64Slice struct { + // Has unexported fields. +} + Float64Slice wraps []float64 to satisfy flag.Value + +func NewFloat64Slice(defaults ...float64) *Float64Slice + NewFloat64Slice makes a *Float64Slice with default values + +func (f *Float64Slice) Get() interface{} + Get returns the slice of float64s set by this flag + +func (f *Float64Slice) Serialize() string + Serialize allows Float64Slice to fulfill Serializer + +func (f *Float64Slice) Set(value string) error + Set parses the value into a float64 and appends it to the list of values + +func (f *Float64Slice) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64Slice) Value() []float64 + Value returns the slice of float64s set by this flag + +type Float64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Float64Slice + Destination *Float64Slice + + Aliases []string + EnvVars []string +} + Float64SliceFlag is a flag with type Float64Slice + +func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Float64SliceFlag) Get(ctx *Context) []float64 + Get returns the flag’s value in the given Context. + +func (f *Float64SliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Float64SliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Float64SliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Float64SliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Float64SliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Float64SliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Float64SliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Float64SliceFlag) Names() []string + Names returns the names of the flag + +func (f *Float64SliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Float64SliceFlag) TakesValue() bool + TakesValue returns true if the flag takes a value, otherwise false + +type Generic interface { + Set(value string) error + String() string +} + Generic is a generic parseable type identified by a specific flag + +type GenericFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Generic + Destination *Generic + + Aliases []string + EnvVars []string + + TakesFile bool +} + GenericFlag is a flag with type Generic + +func (f GenericFlag) Apply(set *flag.FlagSet) error + Apply takes the flagset and calls Set on the generic flag with the value + provided by the user for parsing by the flag + +func (f *GenericFlag) Get(ctx *Context) interface{} + Get returns the flag’s value in the given Context. + +func (f *GenericFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *GenericFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *GenericFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *GenericFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *GenericFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *GenericFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *GenericFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *GenericFlag) Names() []string + Names returns the names of the flag + +func (f *GenericFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *GenericFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Int64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int64 + Destination *int64 + + Aliases []string + EnvVars []string +} + Int64Flag is a flag with type int64 + +func (f *Int64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Int64Flag) Get(ctx *Context) int64 + Get returns the flag’s value in the given Context. + +func (f *Int64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Int64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Int64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Int64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Int64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Int64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Int64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Int64Flag) Names() []string + Names returns the names of the flag + +func (f *Int64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Int64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Int64Slice struct { + // Has unexported fields. +} + Int64Slice wraps []int64 to satisfy flag.Value + +func NewInt64Slice(defaults ...int64) *Int64Slice + NewInt64Slice makes an *Int64Slice with default values + +func (i *Int64Slice) Get() interface{} + Get returns the slice of ints set by this flag + +func (i *Int64Slice) Serialize() string + Serialize allows Int64Slice to fulfill Serializer + +func (i *Int64Slice) Set(value string) error + Set parses the value into an integer and appends it to the list of values + +func (i *Int64Slice) String() string + String returns a readable representation of this value (for usage defaults) + +func (i *Int64Slice) Value() []int64 + Value returns the slice of ints set by this flag + +type Int64SliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Int64Slice + Destination *Int64Slice + + Aliases []string + EnvVars []string +} + Int64SliceFlag is a flag with type Int64Slice + +func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Int64SliceFlag) Get(ctx *Context) []int64 + Get returns the flag’s value in the given Context. + +func (f *Int64SliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Int64SliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f Int64SliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Int64SliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Int64SliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Int64SliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Int64SliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Int64SliceFlag) Names() []string + Names returns the names of the flag + +func (f *Int64SliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Int64SliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type IntFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value int + Destination *int + + Aliases []string + EnvVars []string +} + IntFlag is a flag with type int + +func (f *IntFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *IntFlag) Get(ctx *Context) int + Get returns the flag’s value in the given Context. + +func (f *IntFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *IntFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *IntFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *IntFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *IntFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *IntFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *IntFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *IntFlag) Names() []string + Names returns the names of the flag + +func (f *IntFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *IntFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type IntSlice struct { + // Has unexported fields. +} + IntSlice wraps []int to satisfy flag.Value + +func NewIntSlice(defaults ...int) *IntSlice + NewIntSlice makes an *IntSlice with default values + +func (i *IntSlice) Get() interface{} + Get returns the slice of ints set by this flag + +func (i *IntSlice) Serialize() string + Serialize allows IntSlice to fulfill Serializer + +func (i *IntSlice) Set(value string) error + Set parses the value into an integer and appends it to the list of values + +func (i *IntSlice) SetInt(value int) + TODO: Consistently have specific Set function for Int64 and Float64 ? SetInt + directly adds an integer to the list of values + +func (i *IntSlice) String() string + String returns a readable representation of this value (for usage defaults) + +func (i *IntSlice) Value() []int + Value returns the slice of ints set by this flag + +type IntSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *IntSlice + Destination *IntSlice + + Aliases []string + EnvVars []string +} + IntSliceFlag is a flag with type IntSlice + +func (f *IntSliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *IntSliceFlag) Get(ctx *Context) []int + Get returns the flag’s value in the given Context. + +func (f *IntSliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *IntSliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f IntSliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *IntSliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *IntSliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *IntSliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *IntSliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *IntSliceFlag) Names() []string + Names returns the names of the flag + +func (f *IntSliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *IntSliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type MultiError interface { + error + Errors() []error +} + MultiError is an error that wraps multiple errors. + +type OnUsageErrorFunc func(cCtx *Context, err error, isSubcommand bool) error + OnUsageErrorFunc is executed if a usage error occurs. This is useful for + displaying customized usage error messages. This function is able to replace + the original error messages. If this function is not set, the "Incorrect + usage" is displayed and the execution is interrupted. + +type Path = string + +type PathFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value Path + Destination *Path + + Aliases []string + EnvVars []string + + TakesFile bool +} + PathFlag is a flag with type Path + +func (f *PathFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *PathFlag) Get(ctx *Context) string + Get returns the flag’s value in the given Context. + +func (f *PathFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *PathFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *PathFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *PathFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *PathFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *PathFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *PathFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *PathFlag) Names() []string + Names returns the names of the flag + +func (f *PathFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *PathFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type RequiredFlag interface { + Flag + + IsRequired() bool +} + RequiredFlag is an interface that allows us to mark flags as required it + allows flags required flags to be backwards compatible with the Flag + interface + +type Serializer interface { + Serialize() string +} + Serializer is used to circumvent the limitations of flag.FlagSet.Set + +type StringFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value string + Destination *string + + Aliases []string + EnvVars []string + + TakesFile bool +} + StringFlag is a flag with type string + +func (f *StringFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *StringFlag) Get(ctx *Context) string + Get returns the flag’s value in the given Context. + +func (f *StringFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *StringFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *StringFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *StringFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *StringFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *StringFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *StringFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *StringFlag) Names() []string + Names returns the names of the flag + +func (f *StringFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *StringFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type StringSlice struct { + // Has unexported fields. +} + StringSlice wraps a []string to satisfy flag.Value + +func NewStringSlice(defaults ...string) *StringSlice + NewStringSlice creates a *StringSlice with default values + +func (s *StringSlice) Get() interface{} + Get returns the slice of strings set by this flag + +func (s *StringSlice) Serialize() string + Serialize allows StringSlice to fulfill Serializer + +func (s *StringSlice) Set(value string) error + Set appends the string value to the list of values + +func (s *StringSlice) String() string + String returns a readable representation of this value (for usage defaults) + +func (s *StringSlice) Value() []string + Value returns the slice of strings set by this flag + +type StringSliceFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *StringSlice + Destination *StringSlice + + Aliases []string + EnvVars []string + + TakesFile bool +} + StringSliceFlag is a flag with type StringSlice + +func (f *StringSliceFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *StringSliceFlag) Get(ctx *Context) []string + Get returns the flag’s value in the given Context. + +func (f *StringSliceFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *StringSliceFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *StringSliceFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *StringSliceFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *StringSliceFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *StringSliceFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *StringSliceFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *StringSliceFlag) Names() []string + Names returns the names of the flag + +func (f *StringSliceFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *StringSliceFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Timestamp struct { + // Has unexported fields. +} + Timestamp wrap to satisfy golang's flag interface. + +func NewTimestamp(timestamp time.Time) *Timestamp + Timestamp constructor + +func (t *Timestamp) Get() interface{} + Get returns the flag structure + +func (t *Timestamp) Set(value string) error + Parses the string value to timestamp + +func (t *Timestamp) SetLayout(layout string) + Set the timestamp string layout for future parsing + +func (t *Timestamp) SetTimestamp(value time.Time) + Set the timestamp value directly + +func (t *Timestamp) String() string + String returns a readable representation of this value (for usage defaults) + +func (t *Timestamp) Value() *time.Time + Value returns the timestamp value stored in the flag + +type TimestampFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value *Timestamp + Destination *Timestamp + + Aliases []string + EnvVars []string + + Layout string +} + TimestampFlag is a flag with type Timestamp + +func (f *TimestampFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *TimestampFlag) Get(ctx *Context) *time.Time + Get returns the flag’s value in the given Context. + +func (f *TimestampFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *TimestampFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *TimestampFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *TimestampFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *TimestampFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *TimestampFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *TimestampFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *TimestampFlag) Names() []string + Names returns the names of the flag + +func (f *TimestampFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *TimestampFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type Uint64Flag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint64 + Destination *uint64 + + Aliases []string + EnvVars []string +} + Uint64Flag is a flag with type uint64 + +func (f *Uint64Flag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *Uint64Flag) Get(ctx *Context) uint64 + Get returns the flag’s value in the given Context. + +func (f *Uint64Flag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *Uint64Flag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *Uint64Flag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *Uint64Flag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *Uint64Flag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *Uint64Flag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *Uint64Flag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *Uint64Flag) Names() []string + Names returns the names of the flag + +func (f *Uint64Flag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *Uint64Flag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type UintFlag struct { + Name string + + DefaultText string + FilePath string + Usage string + + Required bool + Hidden bool + HasBeenSet bool + + Value uint + Destination *uint + + Aliases []string + EnvVars []string +} + UintFlag is a flag with type uint + +func (f *UintFlag) Apply(set *flag.FlagSet) error + Apply populates the flag given the flag set and environment + +func (f *UintFlag) Get(ctx *Context) uint + Get returns the flag’s value in the given Context. + +func (f *UintFlag) GetDefaultText() string + GetDefaultText returns the default text for this flag + +func (f *UintFlag) GetEnvVars() []string + GetEnvVars returns the env vars for this flag + +func (f *UintFlag) GetUsage() string + GetUsage returns the usage string for the flag + +func (f *UintFlag) GetValue() string + GetValue returns the flags value as string representation and an empty + string if the flag takes no value at all. + +func (f *UintFlag) IsRequired() bool + IsRequired returns whether or not the flag is required + +func (f *UintFlag) IsSet() bool + IsSet returns whether or not the flag has been set through env or file + +func (f *UintFlag) IsVisible() bool + IsVisible returns true if the flag is not hidden, otherwise false + +func (f *UintFlag) Names() []string + Names returns the names of the flag + +func (f *UintFlag) String() string + String returns a readable representation of this value (for usage defaults) + +func (f *UintFlag) TakesValue() bool + TakesValue returns true of the flag takes a value, otherwise false + +type VisibleFlag interface { + Flag + + // IsVisible returns true if the flag is not hidden, otherwise false + IsVisible() bool +} + VisibleFlag is an interface that allows to check if a flag is visible + +package altsrc // import "github.com/urfave/cli/v2/altsrc" + + +FUNCTIONS + +func ApplyInputSourceValues(cCtx *cli.Context, inputSourceContext InputSourceContext, flags []cli.Flag) error + ApplyInputSourceValues iterates over all provided flags and executes + ApplyInputSourceValue on flags implementing the FlagInputSourceExtension + interface to initialize these flags to an alternate input source. + +func InitInputSource(flags []cli.Flag, createInputSource func() (InputSourceContext, error)) cli.BeforeFunc + InitInputSource is used to to setup an InputSourceContext on a cli.Command + Before method. It will create a new input source based on the func provided. + If there is no error it will then apply the new input source to any flags + that are supported by the input source + +func InitInputSourceWithContext(flags []cli.Flag, createInputSource func(cCtx *cli.Context) (InputSourceContext, error)) cli.BeforeFunc + InitInputSourceWithContext is used to to setup an InputSourceContext on a + cli.Command Before method. It will create a new input source based on the + func provided with potentially using existing cli.Context values to + initialize itself. If there is no error it will then apply the new input + source to any flags that are supported by the input source + +func NewJSONSourceFromFlagFunc(flag string) func(c *cli.Context) (InputSourceContext, error) + NewJSONSourceFromFlagFunc returns a func that takes a cli.Context and + returns an InputSourceContext suitable for retrieving config variables from + a file containing JSON data with the file name defined by the given flag. + +func NewTomlSourceFromFlagFunc(flagFileName string) func(cCtx *cli.Context) (InputSourceContext, error) + NewTomlSourceFromFlagFunc creates a new TOML InputSourceContext from a + provided flag name and source context. + +func NewYamlSourceFromFlagFunc(flagFileName string) func(cCtx *cli.Context) (InputSourceContext, error) + NewYamlSourceFromFlagFunc creates a new Yaml InputSourceContext from a + provided flag name and source context. + + +TYPES + +type BoolFlag struct { + *cli.BoolFlag + // Has unexported fields. +} + BoolFlag is the flag type that wraps cli.BoolFlag to allow for other values + to be specified + +func NewBoolFlag(fl *cli.BoolFlag) *BoolFlag + NewBoolFlag creates a new BoolFlag + +func (f *BoolFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + BoolFlag.Apply + +func (f *BoolFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Bool value to the flagSet if required + +type DurationFlag struct { + *cli.DurationFlag + // Has unexported fields. +} + DurationFlag is the flag type that wraps cli.DurationFlag to allow for other + values to be specified + +func NewDurationFlag(fl *cli.DurationFlag) *DurationFlag + NewDurationFlag creates a new DurationFlag + +func (f *DurationFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + DurationFlag.Apply + +func (f *DurationFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Duration value to the flagSet if required + +type FlagInputSourceExtension interface { + cli.Flag + ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error +} + FlagInputSourceExtension is an extension interface of cli.Flag that allows a + value to be set on the existing parsed flags. + +type Float64Flag struct { + *cli.Float64Flag + // Has unexported fields. +} + Float64Flag is the flag type that wraps cli.Float64Flag to allow for other + values to be specified + +func NewFloat64Flag(fl *cli.Float64Flag) *Float64Flag + NewFloat64Flag creates a new Float64Flag + +func (f *Float64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Float64Flag.Apply + +func (f *Float64Flag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Float64 value to the flagSet if required + +type Float64SliceFlag struct { + *cli.Float64SliceFlag + // Has unexported fields. +} + Float64SliceFlag is the flag type that wraps cli.Float64SliceFlag to allow + for other values to be specified + +func NewFloat64SliceFlag(fl *cli.Float64SliceFlag) *Float64SliceFlag + NewFloat64SliceFlag creates a new Float64SliceFlag + +func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Float64SliceFlag.Apply + +type GenericFlag struct { + *cli.GenericFlag + // Has unexported fields. +} + GenericFlag is the flag type that wraps cli.GenericFlag to allow for other + values to be specified + +func NewGenericFlag(fl *cli.GenericFlag) *GenericFlag + NewGenericFlag creates a new GenericFlag + +func (f *GenericFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + GenericFlag.Apply + +func (f *GenericFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a generic value to the flagSet if required + +type InputSourceContext interface { + Source() string + + Int(name string) (int, error) + Duration(name string) (time.Duration, error) + Float64(name string) (float64, error) + String(name string) (string, error) + StringSlice(name string) ([]string, error) + IntSlice(name string) ([]int, error) + Generic(name string) (cli.Generic, error) + Bool(name string) (bool, error) + + // Has unexported methods. +} + InputSourceContext is an interface used to allow other input sources to be + implemented as needed. + + Source returns an identifier for the input source. In case of file source it + should return path to the file. + +func NewJSONSource(data []byte) (InputSourceContext, error) + NewJSONSource returns an InputSourceContext suitable for retrieving config + variables from raw JSON data. + +func NewJSONSourceFromFile(f string) (InputSourceContext, error) + NewJSONSourceFromFile returns an InputSourceContext suitable for retrieving + config variables from a file (or url) containing JSON data. + +func NewJSONSourceFromReader(r io.Reader) (InputSourceContext, error) + NewJSONSourceFromReader returns an InputSourceContext suitable for + retrieving config variables from an io.Reader that returns JSON data. + +func NewTomlSourceFromFile(file string) (InputSourceContext, error) + NewTomlSourceFromFile creates a new TOML InputSourceContext from a filepath. + +func NewYamlSourceFromFile(file string) (InputSourceContext, error) + NewYamlSourceFromFile creates a new Yaml InputSourceContext from a filepath. + +type Int64Flag struct { + *cli.Int64Flag + // Has unexported fields. +} + Int64Flag is the flag type that wraps cli.Int64Flag to allow for other + values to be specified + +func NewInt64Flag(fl *cli.Int64Flag) *Int64Flag + NewInt64Flag creates a new Int64Flag + +func (f *Int64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Int64Flag.Apply + +type Int64SliceFlag struct { + *cli.Int64SliceFlag + // Has unexported fields. +} + Int64SliceFlag is the flag type that wraps cli.Int64SliceFlag to allow for + other values to be specified + +func NewInt64SliceFlag(fl *cli.Int64SliceFlag) *Int64SliceFlag + NewInt64SliceFlag creates a new Int64SliceFlag + +func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Int64SliceFlag.Apply + +type IntFlag struct { + *cli.IntFlag + // Has unexported fields. +} + IntFlag is the flag type that wraps cli.IntFlag to allow for other values to + be specified + +func NewIntFlag(fl *cli.IntFlag) *IntFlag + NewIntFlag creates a new IntFlag + +func (f *IntFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + IntFlag.Apply + +func (f *IntFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a int value to the flagSet if required + +type IntSliceFlag struct { + *cli.IntSliceFlag + // Has unexported fields. +} + IntSliceFlag is the flag type that wraps cli.IntSliceFlag to allow for other + values to be specified + +func NewIntSliceFlag(fl *cli.IntSliceFlag) *IntSliceFlag + NewIntSliceFlag creates a new IntSliceFlag + +func (f *IntSliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + IntSliceFlag.Apply + +func (f *IntSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a IntSlice value if required + +type MapInputSource struct { + // Has unexported fields. +} + MapInputSource implements InputSourceContext to return data from the map + that is loaded. + +func NewMapInputSource(file string, valueMap map[interface{}]interface{}) *MapInputSource + NewMapInputSource creates a new MapInputSource for implementing custom input + sources. + +func (fsm *MapInputSource) Bool(name string) (bool, error) + Bool returns an bool from the map otherwise returns false + +func (fsm *MapInputSource) Duration(name string) (time.Duration, error) + Duration returns a duration from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) Float64(name string) (float64, error) + Float64 returns an float64 from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) Generic(name string) (cli.Generic, error) + Generic returns an cli.Generic from the map if it exists otherwise returns + nil + +func (fsm *MapInputSource) Int(name string) (int, error) + Int returns an int from the map if it exists otherwise returns 0 + +func (fsm *MapInputSource) IntSlice(name string) ([]int, error) + IntSlice returns an []int from the map if it exists otherwise returns nil + +func (fsm *MapInputSource) Source() string + Source returns the path of the source file + +func (fsm *MapInputSource) String(name string) (string, error) + String returns a string from the map if it exists otherwise returns an empty + string + +func (fsm *MapInputSource) StringSlice(name string) ([]string, error) + StringSlice returns an []string from the map if it exists otherwise returns + nil + +type PathFlag struct { + *cli.PathFlag + // Has unexported fields. +} + PathFlag is the flag type that wraps cli.PathFlag to allow for other values + to be specified + +func NewPathFlag(fl *cli.PathFlag) *PathFlag + NewPathFlag creates a new PathFlag + +func (f *PathFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + PathFlag.Apply + +func (f *PathFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a Path value to the flagSet if required + +type StringFlag struct { + *cli.StringFlag + // Has unexported fields. +} + StringFlag is the flag type that wraps cli.StringFlag to allow for other + values to be specified + +func NewStringFlag(fl *cli.StringFlag) *StringFlag + NewStringFlag creates a new StringFlag + +func (f *StringFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + StringFlag.Apply + +func (f *StringFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a String value to the flagSet if required + +type StringSliceFlag struct { + *cli.StringSliceFlag + // Has unexported fields. +} + StringSliceFlag is the flag type that wraps cli.StringSliceFlag to allow for + other values to be specified + +func NewStringSliceFlag(fl *cli.StringSliceFlag) *StringSliceFlag + NewStringSliceFlag creates a new StringSliceFlag + +func (f *StringSliceFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + StringSliceFlag.Apply + +func (f *StringSliceFlag) ApplyInputSourceValue(cCtx *cli.Context, isc InputSourceContext) error + ApplyInputSourceValue applies a StringSlice value to the flagSet if required + +type Uint64Flag struct { + *cli.Uint64Flag + // Has unexported fields. +} + Uint64Flag is the flag type that wraps cli.Uint64Flag to allow for other + values to be specified + +func NewUint64Flag(fl *cli.Uint64Flag) *Uint64Flag + NewUint64Flag creates a new Uint64Flag + +func (f *Uint64Flag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + Uint64Flag.Apply + +type UintFlag struct { + *cli.UintFlag + // Has unexported fields. +} + UintFlag is the flag type that wraps cli.UintFlag to allow for other values + to be specified + +func NewUintFlag(fl *cli.UintFlag) *UintFlag + NewUintFlag creates a new UintFlag + +func (f *UintFlag) Apply(set *flag.FlagSet) error + Apply saves the flagSet for later usage calls, then calls the wrapped + UintFlag.Apply + From 2ac3904d122959569d8fb8b8a2136853237c7169 Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Wed, 4 May 2022 23:11:05 -0400 Subject: [PATCH 6/7] Include `*` in documented flag value type when applicable --- internal/genflags/generated.gotmpl | 2 +- zz_generated.flags.go | 10 +++++----- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/internal/genflags/generated.gotmpl b/internal/genflags/generated.gotmpl index 681a1018b0..5d6f0dde1a 100644 --- a/internal/genflags/generated.gotmpl +++ b/internal/genflags/generated.gotmpl @@ -3,7 +3,7 @@ package {{.PackageName}} {{range .SortedFlagTypes}} -// {{.TypeName}} is a flag with type {{.GoType}} +// {{.TypeName}} is a flag with type {{if .ValuePointer}}*{{end}}{{.GoType}} type {{.TypeName}} struct { Name string diff --git a/zz_generated.flags.go b/zz_generated.flags.go index eb980bcb14..703e66a406 100644 --- a/zz_generated.flags.go +++ b/zz_generated.flags.go @@ -4,7 +4,7 @@ package cli import "time" -// Float64SliceFlag is a flag with type Float64Slice +// Float64SliceFlag is a flag with type *Float64Slice type Float64SliceFlag struct { Name string @@ -69,7 +69,7 @@ func (f *GenericFlag) Names() []string { return FlagNames(f.Name, f.Aliases) } -// Int64SliceFlag is a flag with type Int64Slice +// Int64SliceFlag is a flag with type *Int64Slice type Int64SliceFlag struct { Name string @@ -98,7 +98,7 @@ func (f *Int64SliceFlag) Names() []string { return FlagNames(f.Name, f.Aliases) } -// IntSliceFlag is a flag with type IntSlice +// IntSliceFlag is a flag with type *IntSlice type IntSliceFlag struct { Name string @@ -163,7 +163,7 @@ func (f *PathFlag) Names() []string { return FlagNames(f.Name, f.Aliases) } -// StringSliceFlag is a flag with type StringSlice +// StringSliceFlag is a flag with type *StringSlice type StringSliceFlag struct { Name string @@ -194,7 +194,7 @@ func (f *StringSliceFlag) Names() []string { return FlagNames(f.Name, f.Aliases) } -// TimestampFlag is a flag with type Timestamp +// TimestampFlag is a flag with type *Timestamp type TimestampFlag struct { Name string From f1834d176f97c38419b7b249bca96ec5c12e5aaf Mon Sep 17 00:00:00 2001 From: Dan Buch Date: Wed, 4 May 2022 23:12:27 -0400 Subject: [PATCH 7/7] Update docs with corrected flag value --- godoc-current.txt | 10 +++++----- testdata/godoc-v2.x.txt | 10 +++++----- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/godoc-current.txt b/godoc-current.txt index 1a9ab238ad..1bddc54736 100644 --- a/godoc-current.txt +++ b/godoc-current.txt @@ -934,7 +934,7 @@ type Float64SliceFlag struct { Aliases []string EnvVars []string } - Float64SliceFlag is a flag with type Float64Slice + Float64SliceFlag is a flag with type *Float64Slice func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1134,7 +1134,7 @@ type Int64SliceFlag struct { Aliases []string EnvVars []string } - Int64SliceFlag is a flag with type Int64Slice + Int64SliceFlag is a flag with type *Int64Slice func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1273,7 +1273,7 @@ type IntSliceFlag struct { Aliases []string EnvVars []string } - IntSliceFlag is a flag with type IntSlice + IntSliceFlag is a flag with type *IntSlice func (f *IntSliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1498,7 +1498,7 @@ type StringSliceFlag struct { TakesFile bool } - StringSliceFlag is a flag with type StringSlice + StringSliceFlag is a flag with type *StringSlice func (f *StringSliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1582,7 +1582,7 @@ type TimestampFlag struct { Layout string } - TimestampFlag is a flag with type Timestamp + TimestampFlag is a flag with type *Timestamp func (f *TimestampFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment diff --git a/testdata/godoc-v2.x.txt b/testdata/godoc-v2.x.txt index 1a9ab238ad..1bddc54736 100644 --- a/testdata/godoc-v2.x.txt +++ b/testdata/godoc-v2.x.txt @@ -934,7 +934,7 @@ type Float64SliceFlag struct { Aliases []string EnvVars []string } - Float64SliceFlag is a flag with type Float64Slice + Float64SliceFlag is a flag with type *Float64Slice func (f *Float64SliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1134,7 +1134,7 @@ type Int64SliceFlag struct { Aliases []string EnvVars []string } - Int64SliceFlag is a flag with type Int64Slice + Int64SliceFlag is a flag with type *Int64Slice func (f *Int64SliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1273,7 +1273,7 @@ type IntSliceFlag struct { Aliases []string EnvVars []string } - IntSliceFlag is a flag with type IntSlice + IntSliceFlag is a flag with type *IntSlice func (f *IntSliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1498,7 +1498,7 @@ type StringSliceFlag struct { TakesFile bool } - StringSliceFlag is a flag with type StringSlice + StringSliceFlag is a flag with type *StringSlice func (f *StringSliceFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment @@ -1582,7 +1582,7 @@ type TimestampFlag struct { Layout string } - TimestampFlag is a flag with type Timestamp + TimestampFlag is a flag with type *Timestamp func (f *TimestampFlag) Apply(set *flag.FlagSet) error Apply populates the flag given the flag set and environment