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Optimize code adjust #2700

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merged 9 commits into from Jun 1, 2021
Merged

Optimize code adjust #2700

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39c4287
setFormMap error of result
daheige Apr 21, 2021
20d21ff
adjust code for TrySet
daheige Apr 21, 2021
6661885
error export for type multipart.FileHeader
daheige Apr 21, 2021
523761d
code style adjust
daheige Apr 21, 2021
5eb55a8
reflect code maping optimize
daheige Apr 21, 2021
8728ba2
Update form_mapping.go
daheige Apr 29, 2021
f767157
Merge branch 'master' into optimize-code-adjust
appleboy Apr 29, 2021
2e79f15
Merge branch 'master' into optimize-code-adjust
thinkerou May 7, 2021
7e656c6
Merge branch 'master' into optimize-code-adjust
thinkerou Jun 1, 2021
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16 changes: 12 additions & 4 deletions binding/form_mapping.go
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Expand Up @@ -16,7 +16,15 @@ import (
"github.com/gin-gonic/gin/internal/json"
)

var errUnknownType = errors.New("unknown type")
var (
errUnknownType = errors.New("unknown type")

// ErrConvertMapStringSlice can not covert to map[string][]string
ErrConvertMapStringSlice = errors.New("can not convert to map slices of strings")

// ErrConvertToMapString can not convert to map[string]string
ErrConvertToMapString = errors.New("can not convert to map of strings")
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not output var

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@daheige daheige Apr 28, 2021 •
edited

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If there is an error in the conversion, it should be made known to the caller, not hidden in the current gin framework. I don't think your gin team has done a very good job of handling the error, and the way it is handled is not very friendly to the caller. I think there is something wrong with the design. Maybe more Go developers feel the same way.

)

func mapUri(ptr interface{}, m map[string][]string) error {
return mapFormByTag(ptr, m, "uri")
Expand Down Expand Up @@ -109,7 +117,7 @@ func mapping(value reflect.Value, field reflect.StructField, setter setter, tag
if sf.PkgPath != "" && !sf.Anonymous { // unexported
continue
}
ok, err := mapping(value.Field(i), tValue.Field(i), setter, tag)
ok, err := mapping(value.Field(i), sf, setter, tag)
if err != nil {
return false, err
}
Expand Down Expand Up @@ -371,7 +379,7 @@ func setFormMap(ptr interface{}, form map[string][]string) error {
if el.Kind() == reflect.Slice {
ptrMap, ok := ptr.(map[string][]string)
if !ok {
return errors.New("cannot convert to map slices of strings")
return ErrConvertMapStringSlice
}
for k, v := range form {
ptrMap[k] = v
Expand All @@ -382,7 +390,7 @@ func setFormMap(ptr interface{}, form map[string][]string) error {

ptrMap, ok := ptr.(map[string]string)
if !ok {
return errors.New("cannot convert to map of strings")
return ErrConvertToMapString
}
for k, v := range form {
ptrMap[k] = v[len(v)-1] // pick last
Expand Down
2 changes: 1 addition & 1 deletion binding/header.go
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Expand Up @@ -29,6 +29,6 @@ type headerSource map[string][]string

var _ setter = headerSource(nil)

func (hs headerSource) TrySet(value reflect.Value, field reflect.StructField, tagValue string, opt setOptions) (isSetted bool, err error) {
func (hs headerSource) TrySet(value reflect.Value, field reflect.StructField, tagValue string, opt setOptions) (bool, error) {
return setByForm(value, field, hs, textproto.CanonicalMIMEHeaderKey(tagValue), opt)
}
14 changes: 11 additions & 3 deletions binding/multipart_form_mapping.go
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Expand Up @@ -15,8 +15,16 @@ type multipartRequest http.Request

var _ setter = (*multipartRequest)(nil)

var (
// ErrMultiFileHeader multipart.FileHeader invalid
ErrMultiFileHeader = errors.New("unsupported field type for multipart.FileHeader")

// ErrMultiFileHeaderLenInvalid array for []*multipart.FileHeader len invalid
ErrMultiFileHeaderLenInvalid = errors.New("unsupported len of array for []*multipart.FileHeader")
)

// TrySet tries to set a value by the multipart request with the binding a form file
func (r *multipartRequest) TrySet(value reflect.Value, field reflect.StructField, key string, opt setOptions) (isSetted bool, err error) {
func (r *multipartRequest) TrySet(value reflect.Value, field reflect.StructField, key string, opt setOptions) (bool, error) {
if files := r.MultipartForm.File[key]; len(files) != 0 {
return setByMultipartFormFile(value, field, files)
}
Expand Down Expand Up @@ -49,12 +57,12 @@ func setByMultipartFormFile(value reflect.Value, field reflect.StructField, file
case reflect.Array:
return setArrayOfMultipartFormFiles(value, field, files)
}
return false, errors.New("unsupported field type for multipart.FileHeader")
return false, ErrMultiFileHeader
}

func setArrayOfMultipartFormFiles(value reflect.Value, field reflect.StructField, files []*multipart.FileHeader) (isSetted bool, err error) {
if value.Len() != len(files) {
return false, errors.New("unsupported len of array for []*multipart.FileHeader")
return false, ErrMultiFileHeaderLenInvalid
}
for i := range files {
setted, err := setByMultipartFormFile(value.Index(i), field, files[i:i+1])
Expand Down
8 changes: 5 additions & 3 deletions render/json.go
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Expand Up @@ -46,9 +46,11 @@ type PureJSON struct {
Data interface{}
}

var jsonContentType = []string{"application/json; charset=utf-8"}
var jsonpContentType = []string{"application/javascript; charset=utf-8"}
var jsonAsciiContentType = []string{"application/json"}
var (
jsonContentType = []string{"application/json; charset=utf-8"}
jsonpContentType = []string{"application/javascript; charset=utf-8"}
jsonAsciiContentType = []string{"application/json"}
)

// Render (JSON) writes data with custom ContentType.
func (r JSON) Render(w http.ResponseWriter) (err error) {
Expand Down