rss/charset_reader.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
package rss
import (
"errors"
"io"
"strings"
"github.com/axgle/mahonia"
)
func charsetReader(charset string, input io.Reader) (io.Reader, error) {
switch {
case isCharsetUTF8(charset):
return input, nil
case isCharsetISO88591(charset):
return newCharsetISO88591(input), nil
default:
if decoder := mahonia.NewDecoder(charset); decoder != nil {
return decoder.NewReader(input), nil
}
}
return nil, errors.New("CharsetReader: unexpected charset: " + charset)
}
func isCharset(charset string, names []string) bool {
charset = strings.ToLower(charset)
for _, n := range names {
if charset == strings.ToLower(n) {
return true
}
}
return false
}
func isCharsetUTF8(charset string) bool {
names := []string{
"UTF-8",
// Default
"",
}
return isCharset(charset, names)
}