1 // Copyright 2015 go-swagger maintainers 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package runtime 16 17 import ( 18 "mime" 19 "net/http" 20 21 "github.com/go-openapi/errors" 22 ) 23 24 // ContentType parses a content type header 25 func ContentType(headers http.Header) (string, string, error) { 26 ct := headers.Get(HeaderContentType) 27 orig := ct 28 if ct == "" { 29 ct = DefaultMime 30 } 31 if ct == "" { 32 return "", "", nil 33 } 34 35 mt, opts, err := mime.ParseMediaType(ct) 36 if err != nil { 37 return "", "", errors.NewParseError(HeaderContentType, "header", orig, err) 38 } 39 40 if cs, ok := opts[charsetKey]; ok { 41 return mt, cs, nil 42 } 43 44 return mt, "", nil 45 } 46