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/*
File: unquote.c
Copyright (C) 2003 Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "misc.h"
char *__acl_unquote(char *str)
{
unsigned char *s, *t;
if (!str)
return str;
for (s = (unsigned char *)str; *s != '\0'; s++)
if (*s == '\\')
break;
if (*s == '\0')
return str;
#define isoctal(c) \
((c) >= '0' && (c) <= '7')
t = s;
do {
if (*s == '\\' &&
isoctal(*(s+1)) && isoctal(*(s+2)) && isoctal(*(s+3))) {
*t++ = ((*(s+1) - '0') << 6) +
((*(s+2) - '0') << 3) +
((*(s+3) - '0') );
s += 3;
} else if (*s == '\\' && *(s+1) == '\\') {
*t++ = *s++;
} else
*t++ = *s;
} while (*s++ != '\0');
return str;
}
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