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/*
File: quote.c
Copyright (C) 2003 Andreas Gruenbacher <a.gruenbacher@computer.org>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "misc.h"
const char *quote(const char *str)
{
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 (!isprint(*s) || isspace(*s) || *s == '\\' || *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 (!isprint(*s) || isspace(*s) || *s == '\\' || *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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