Add support for Content-Language metadata header (#928)

Fixes #922

api-put-object.go

@@ -38,6 +38,7 @@ type PutObjectOptions struct {
 	ContentType        string
 	ContentEncoding    string
 	ContentDisposition string
+	ContentLanguage    string
 	CacheControl       string
 	EncryptMaterials   encrypt.Materials
 	NumThreads         uint
@@ -71,6 +72,9 @@ func (opts PutObjectOptions) Header() (header http.Header) {
 	if opts.ContentDisposition != "" {
 		header["Content-Disposition"] = []string{opts.ContentDisposition}
 	}
+	if opts.ContentLanguage != "" {
+		header["Content-Language"] = []string{opts.ContentLanguage}
+	}
 	if opts.CacheControl != "" {
 		header["Cache-Control"] = []string{opts.CacheControl}
 	}

api-put-object_test.go

@@ -40,6 +40,7 @@ func TestPutObjectOptionsValidate(t *testing.T) {
 		{"Content-Encoding", "gzip", false},
 		{"Cache-Control", "blah", false},
 		{"Content-Disposition", "something", false},
+		{"Content-Language", "somelanguage", false},
 
 		// Valid metadata names.
 		{"my-custom-header", "blah", true},

core.go

@@ -78,6 +78,8 @@ func (c Core) PutObject(bucket, object string, data io.Reader, size int64, md5Ba
 			opts.ContentEncoding = v
 		} else if strings.ToLower(k) == "content-disposition" {
 			opts.ContentDisposition = v
+		} else if strings.ToLower(k) == "content-language" {
+			opts.ContentLanguage = v
 		} else if strings.ToLower(k) == "content-type" {
 			opts.ContentType = v
 		} else if strings.ToLower(k) == "cache-control" {

docs/API.md

@@ -584,6 +584,7 @@ __minio.PutObjectOptions__
 | `opts.ContentType` | _string_ | Content type of object, e.g "application/text" |
 | `opts.ContentEncoding` | _string_ | Content encoding of object, e.g "gzip" |
 | `opts.ContentDisposition` | _string_ | Content disposition of object, "inline" |
+| `opts.ContentLanguage` | _string_ | Content language of object, e.g "French" |
 | `opts.CacheControl` | _string_ | Used to specify directives for caching mechanisms in both requests and responses e.g "max-age=600"|
 | `opts.EncryptMaterials` | _encrypt.Materials_ | Interface provided by `encrypt` package to encrypt a stream of data (For more information see https://godoc.org/github.com/minio/minio-go) |
 | `opts.StorageClass` | _string_ | Specify storage class for the object. Supported values for Minio server are `REDUCED_REDUNDANCY` and `STANDARD` |
@@ -629,7 +630,7 @@ __Parameters__
 |`objectName` | _string_  |Name of the object   |
 |`reader` | _io.Reader_  |Any Go type that implements io.Reader |
 |`objectSize`| _int64_ | size of the object being uploaded. Pass -1 if stream size is unknown |
-|`opts` | _minio.PutObjectOptions_  |Pointer to struct that allows user to set optional custom metadata, content-type, content-encoding,content-disposition and cache-control headers, pass encryption module for encrypting objects, and optionally configure number of threads for multipart put operation. |
+|`opts` | _minio.PutObjectOptions_  |Pointer to struct that allows user to set optional custom metadata, content-type, content-encoding, content-disposition, content-language and cache-control headers, pass encryption module for encrypting objects, and optionally configure number of threads for multipart put operation. |
 
 
 __Example__
@@ -911,7 +912,7 @@ __Parameters__
 |`bucketName`  | _string_  |Name of the bucket  |
 |`objectName` | _string_  |Name of the object |
 |`filePath` | _string_  |Path to file to be uploaded |
-|`opts` | _minio.PutObjectOptions_  |Pointer to struct that allows user to set optional custom metadata, content-type, content-encoding,content-disposition and cache-control headers, pass encryption module for encrypting objects, and optionally configure number of threads for multipart put operation.  |
+|`opts` | _minio.PutObjectOptions_  |Pointer to struct that allows user to set optional custom metadata, content-type, content-encoding, content-disposition, content-language and cache-control headers, pass encryption module for encrypting objects, and optionally configure number of threads for multipart put operation.  |
 
 
 __Example__

utils.go

@@ -221,6 +221,7 @@ var supportedHeaders = []string{
 	"cache-control",
 	"content-encoding",
 	"content-disposition",
+	"content-language",
 	// Add more supported headers here.
 }
 

utils_test.go

@@ -312,6 +312,7 @@ func TestIsStandardHeader(t *testing.T) {
 		{"content-type", true},
 		{"cache-control", true},
 		{"content-disposition", true},
+		{"content-language", true},
 		{"random-header", false},
 	}