Fawkes API Fawkes Development Version
string_urlescape.h
1/***************************************************************************
2 * string_urlescape.h - Fawkes string URL escape utils
3 *
4 * Created: Fri Oct 24 09:31:39 2008
5 * Copyright 2006-2007 Tim Niemueller [www.niemueller.de]
6 *
7 ****************************************************************************/
8
9/* This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version. A runtime exception applies to
13 * this software (see LICENSE.GPL_WRE file mentioned below for details).
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Library General Public License for more details.
19 *
20 * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
21 */
22
23#ifndef _UTILS_MISC_STRING_URLESCAPE_H_
24#define _UTILS_MISC_STRING_URLESCAPE_H_
25
26namespace fawkes {
27
28/** Transform hex to value.
29 * @param c character
30 * @return value of hex code as number
31 */
32int
33unhex(char c)
34{
35 return (c >= '0' && c <= '9' ? c - '0' : c >= 'A' && c <= 'F' ? c - 'A' + 10 : c - 'a' + 10);
36}
37
38/** Remove URL hex escapes from s in place.
39 * @param s string to manipulate
40 */
41void
43{
44 char *p;
45
46 for (p = s; *s != '\0'; ++s) {
47 if (*s == '%') {
48 if (*++s != '\0') {
49 *p = unhex(*s) << 4;
50 }
51 if (*++s != '\0') {
52 *p++ += unhex(*s);
53 }
54 } else {
55 *p++ = *s;
56 }
57 }
58
59 *p = '\0';
60}
61
62} // end namespace fawkes
63
64#endif
Fawkes library namespace.
void hex_unescape(char *s)
Remove URL hex escapes from s in place.
int unhex(char c)
Transform hex to value.