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/*
File: quote.c
Copyright (C) 2003 Andreas Gruenbacher <a.gruenbacher@bestbits.at>
This program 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 program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "misc.h"
const char *quote(const char *str, const char *quote_chars)
{
static char *quoted_str;
static size_t quoted_str_len;
const unsigned char *s;
char *q;
size_t nonpr;
if (!str)
return str;
for (nonpr = 0, s = (unsigned char *)str; *s != '\0'; s++)
if (*s == '\\' || strchr(quote_chars, *s))
nonpr++;
if (nonpr == 0)
return str;
if (high_water_alloc((void **)"ed_str, "ed_str_len,
(s - (unsigned char *)str) + nonpr * 3 + 1))
return NULL;
for (s = (unsigned char *)str, q = quoted_str; *s != '\0'; s++) {
if (*s == '\\' || strchr(quote_chars, *s)) {
*q++ = '\\';
*q++ = '0' + ((*s >> 6) );
*q++ = '0' + ((*s >> 3) & 7);
*q++ = '0' + ((*s ) & 7);
} else
*q++ = *s;
}
*q++ = '\0';
return quoted_str;
}
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