github.com/flavio/docker@v0.1.3-0.20170117145210-f63d1a6eec47/pkg/httputils/mimetype.go (about)

     1  package httputils
     2  
     3  import (
     4  	"mime"
     5  	"net/http"
     6  )
     7  
     8  // MimeTypes stores the MIME content type.
     9  var MimeTypes = struct {
    10  	TextPlain   string
    11  	OctetStream string
    12  }{"text/plain", "application/octet-stream"}
    13  
    14  // DetectContentType returns a best guess representation of the MIME
    15  // content type for the bytes at c.  The value detected by
    16  // http.DetectContentType is guaranteed not be nil, defaulting to
    17  // application/octet-stream when a better guess cannot be made. The
    18  // result of this detection is then run through mime.ParseMediaType()
    19  // which separates the actual MIME string from any parameters.
    20  func DetectContentType(c []byte) (string, map[string]string, error) {
    21  
    22  	ct := http.DetectContentType(c)
    23  	contentType, args, err := mime.ParseMediaType(ct)
    24  	if err != nil {
    25  		return "", nil, err
    26  	}
    27  
    28  	return contentType, args, nil
    29  }