add new built-in format

fixtures/built_in_format.json

@@ -0,0 +1,94 @@
+{
+    "$schema": "https://json-schema.org/draft/2020-12/schema",
+    "$id": "https://github.com/invopop/jsonschema/built-in-format",
+    "$ref": "#/$defs/BuiltInFormat",
+    "$defs": {
+      "BuiltInFormat": {
+        "properties": {
+          "Date": {
+            "type": "string",
+            "format": "date"
+          },
+          "Time": {
+            "type": "string",
+            "format": "time"
+          },
+          "DataTime": {
+            "type": "string",
+            "format": "date-time"
+          },
+          "Duration": {
+            "type": "integer"
+          },
+          "Email": {
+            "type": "string",
+            "format": "email"
+          },
+          "IDNEmail": {
+            "type": "string",
+            "format": "idn-email"
+          },
+          "Hostname": {
+            "type": "string",
+            "format": "hostname"
+          },
+          "IDNHostname": {
+            "type": "string",
+            "format": "idn-hostname"
+          },
+          "IPv4": {
+            "type": "string",
+            "format": "ipv4"
+          },
+          "IPv6": {
+            "type": "string",
+            "format": "ipv6"
+          },
+          "UUID": {
+            "type": "string",
+            "format": "uuid"
+          },
+          "URI": {
+            "type": "string",
+            "format": "uri"
+          },
+          "URIReference": {
+            "type": "string",
+            "format": "uri-reference"
+          },
+          "IRI": {
+            "type": "string",
+            "format": "iri"
+          },
+          "IRIReference": {
+            "type": "string",
+            "format": "iri-reference"
+          },
+          "RegEx": {
+            "type": "string",
+            "format": "regex"
+          }
+        },
+        "additionalProperties": false,
+        "type": "object",
+        "required": [
+          "Date",
+          "Time",
+          "DataTime",
+          "Duration",
+          "Email",
+          "IDNEmail",
+          "Hostname",
+          "IDNHostname",
+          "IPv4",
+          "IPv6",
+          "UUID",
+          "URI",
+          "URIReference",
+          "IRI",
+          "IRIReference",
+          "RegEx"
+        ]
+      }
+    }
+  }

go.mod

@@ -4,5 +4,5 @@ go 1.16
 
 require (
 	github.com/iancoleman/orderedmap v0.0.0-20190318233801-ac98e3ecb4b0
-	github.com/stretchr/testify v1.3.1-0.20190311161405-34c6fa2dc709
+	github.com/stretchr/testify v1.8.0
 )

go.sum

@@ -1,9 +1,19 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/iancoleman/orderedmap v0.0.0-20190318233801-ac98e3ecb4b0 h1:i462o439ZjprVSFSZLZxcsoAe592sZB1rci2Z8j4wdk=
 github.com/iancoleman/orderedmap v0.0.0-20190318233801-ac98e3ecb4b0/go.mod h1:N0Wam8K1arqPXNWjMo21EXnBPOPp36vB07FNRdD2geA=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.3.1-0.20190311161405-34c6fa2dc709 h1:Ko2LQMrRU+Oy/+EDBwX7eZ2jp3C47eDBB8EIhKTun+I=
 github.com/stretchr/testify v1.3.1-0.20190311161405-34c6fa2dc709/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

reflect.go

@@ -745,7 +745,7 @@ func (t *Schema) stringKeywords(tags []string) {
 				t.Pattern = val
 			case "format":
 				switch val {
-				case "date-time", "email", "hostname", "ipv4", "ipv6", "uri", "uuid":
+				case "date", "date-time", "duration", "email", "idn-email", "hostname", "idn-hostname", "iri", "iri-reference", "ipv4", "ipv6", "time", "uri", "uri-reference", "uuid", "regex":
 					t.Format = val
 					break
 				}

reflect_test.go

@@ -498,3 +498,33 @@ func TestArrayFormat(t *testing.T) {
 	pt := p.Items.Format
 	require.Equal(t, pt, "uri")
 }
+
+func TestBuiltInFormat(t *testing.T) {
+	// reference: https://json-schema.org/understanding-json-schema/reference/string.html#built-in-formats
+	type BuiltInFormat struct {
+		Date     time.Time     `jsonschema:"format=date"`
+		Time     time.Time     `jsonschema:"format=time"`
+		DataTime time.Time     `jsonschema:"format=date-time"`
+		Duration time.Duration `jsonschema:"format=duration"`
+
+		Email    string `jsonschema:"format=email"`
+		IDNEmail string `jsonschema:"format=idn-email"`
+
+		Hostname    string `jsonschema:"format=hostname"`
+		IDNHostname string `jsonschema:"format=idn-hostname"`
+
+		IPv4 string `jsonschema:"format=ipv4"`
+		IPv6 string `jsonschema:"format=ipv6"`
+
+		UUID         string `jsonschema:"format=uuid"`
+		URI          string `jsonschema:"format=uri"`
+		URIReference string `jsonschema:"format=uri-reference"`
+		IRI          string `jsonschema:"format=iri"`
+		IRIReference string `jsonschema:"format=iri-reference"`
+
+		RegEx string `jsonschema:"format=regex"`
+	}
+
+	r := new(Reflector)
+	compareSchemaOutput(t, "fixtures/built_in_format.json", r, &BuiltInFormat{})
+}