94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
// Copyright 2016 Charles Banning. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file
|
|
|
|
package mxj
|
|
|
|
import (
|
|
"bytes"
|
|
)
|
|
|
|
var xmlEscapeChars bool
|
|
|
|
// XMLEscapeChars(true) forces escaping invalid characters in attribute and element values.
|
|
// NOTE: this is brute force with NO interrogation of '&' being escaped already; if it is
|
|
// then '&' will be re-escaped as '&'.
|
|
//
|
|
/*
|
|
The values are:
|
|
" "
|
|
' '
|
|
< <
|
|
> >
|
|
& &
|
|
*/
|
|
//
|
|
// Note: if XMLEscapeCharsDecoder(true) has been called - or the default, 'false,' value
|
|
// has been toggled to 'true' - then XMLEscapeChars(true) is ignored. If XMLEscapeChars(true)
|
|
// has already been called before XMLEscapeCharsDecoder(true), XMLEscapeChars(false) is called
|
|
// to turn escape encoding on mv.Xml, etc., to prevent double escaping ampersands, '&'.
|
|
func XMLEscapeChars(b ...bool) {
|
|
var bb bool
|
|
if len(b) == 0 {
|
|
bb = !xmlEscapeChars
|
|
} else {
|
|
bb = b[0]
|
|
}
|
|
if bb == true && xmlEscapeCharsDecoder == false {
|
|
xmlEscapeChars = true
|
|
} else {
|
|
xmlEscapeChars = false
|
|
}
|
|
}
|
|
|
|
// Scan for '&' first, since 's' may contain "&" that is parsed to "&amp;"
|
|
// - or "<" that is parsed to "&lt;".
|
|
var escapechars = [][2][]byte{
|
|
{[]byte(`&`), []byte(`&`)},
|
|
{[]byte(`<`), []byte(`<`)},
|
|
{[]byte(`>`), []byte(`>`)},
|
|
{[]byte(`"`), []byte(`"`)},
|
|
{[]byte(`'`), []byte(`'`)},
|
|
}
|
|
|
|
func escapeChars(s string) string {
|
|
if len(s) == 0 {
|
|
return s
|
|
}
|
|
|
|
b := []byte(s)
|
|
for _, v := range escapechars {
|
|
n := bytes.Count(b, v[0])
|
|
if n == 0 {
|
|
continue
|
|
}
|
|
b = bytes.Replace(b, v[0], v[1], n)
|
|
}
|
|
return string(b)
|
|
}
|
|
|
|
// per issue #84, escape CharData values from xml.Decoder
|
|
|
|
var xmlEscapeCharsDecoder bool
|
|
|
|
// XMLEscapeCharsDecoder(b ...bool) escapes XML characters in xml.CharData values
|
|
// returned by Decoder.Token. Thus, the internal Map values will contain escaped
|
|
// values, and you do not need to set XMLEscapeChars for proper encoding.
|
|
//
|
|
// By default, the Map values have the non-escaped values returned by Decoder.Token.
|
|
// XMLEscapeCharsDecoder(true) - or, XMLEscapeCharsDecoder() - will toggle escape
|
|
// encoding 'on.'
|
|
//
|
|
// Note: if XMLEscapeCharDecoder(true) is call then XMLEscapeChars(false) is
|
|
// called to prevent re-escaping the values on encoding using mv.Xml, etc.
|
|
func XMLEscapeCharsDecoder(b ...bool) {
|
|
if len(b) == 0 {
|
|
xmlEscapeCharsDecoder = !xmlEscapeCharsDecoder
|
|
} else {
|
|
xmlEscapeCharsDecoder = b[0]
|
|
}
|
|
if xmlEscapeCharsDecoder == true && xmlEscapeChars == true {
|
|
xmlEscapeChars = false
|
|
}
|
|
}
|