61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
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/*
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File: quote.c
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Copyright (C) 2003 Andreas Gruenbacher <andreas.gruenbacher@gmail.com>
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation; either version 2.1 of the License, or (at
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your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include "misc.h"
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const char *quote(const char *str, const char *quote_chars)
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{
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static char *quoted_str;
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static size_t quoted_str_len;
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const unsigned char *s;
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char *q;
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size_t nonpr;
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if (!str)
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return str;
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for (nonpr = 0, s = (unsigned char *)str; *s != '\0'; s++)
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if (*s == '\\' || strchr(quote_chars, *s))
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nonpr++;
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if (nonpr == 0)
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return str;
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if (high_water_alloc((void **)"ed_str, "ed_str_len,
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(s - (unsigned char *)str) + nonpr * 3 + 1))
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return NULL;
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for (s = (unsigned char *)str, q = quoted_str; *s != '\0'; s++) {
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if (*s == '\\' || strchr(quote_chars, *s)) {
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*q++ = '\\';
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*q++ = '0' + ((*s >> 6) );
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*q++ = '0' + ((*s >> 3) & 7);
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*q++ = '0' + ((*s ) & 7);
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} else
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*q++ = *s;
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}
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*q++ = '\0';
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return quoted_str;
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}
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