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content_type.go
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content_type.go
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// Package helps parse http headers.
package httphead
import (
"mime"
"net/http"
"path/filepath"
"strings"
)
// ContentType describes "Content-Type"
var ContentType = struct {
ApplicationZip string
TextCsv string
TextPlain string
ApplicationOctetStream string
ApplicationJSON string
MultipartFormData string
}{
"application/zip",
"text/csv",
"text/plain",
"application/octet-stream",
"application/json",
"multipart/form-data",
}
// GetContentTypeByFileName returns "Content-Type" by file name
func GetContentTypeByFileName(name string) string {
switch strings.ToLower(filepath.Ext(name)) {
case ".zip":
return ContentType.ApplicationZip
case ".csv":
return ContentType.TextCsv
default:
return ContentType.TextPlain // if no extension found
}
}
// HasContentType determines whether the request `content-type` includes a server-acceptable mime-type
func HasContentType(r *http.Request, mimetype string) bool {
contentType := r.Header.Get("Content-type")
if contentType == "" {
return mimetype == ContentType.ApplicationOctetStream
}
for _, v := range strings.Split(contentType, ",") {
t, _, err := mime.ParseMediaType(v)
if err != nil {
break
}
if t == mimetype {
return true
}
}
return false
}
//
//const (
// ApplicationZip ContentType = "application/zip"
// ApplicationOctetStream ContentType = "application/octet-stream"
// ApplicationJSON ContentType = "application/json"
// MultipartFormData ContentType = "multipart/form-data"
// TextCsv ContentType = "text/csv"
// TextPlain ContentType = "text/plain"
//)
//
////with this I cannot make strVal == ApplicationZip by default because ApplicationZip is not string
////look at load-balancer to use this pattern
//type ContentType string
//
////type Header struct {
//// ContentType ContentType
//// Body string
////}
//