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/* Base on: GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#include <string.h>
guchar excmap_def[256] = {1,0};
static void make_excmap_def() {
int i;
for(i=0; i<256; i++){
switch ((guchar)i)
{
case '\b':
case '\f':
case '\n':
case '\r':
case '\t':
case '\\':
case '"':
excmap_def[i] = 0;
break;
default:
if ((i < ' ') || (i >= 0177))
excmap_def[i] = 0;
else
excmap_def[i] = 1;
break;
}
}
}
gchar *
gg_strescape (const gchar *source,
const gchar *exceptions,
const gchar *extra)
{
const guchar *p;
gchar *dest;
gchar *q;
guchar excmap[256];
g_return_val_if_fail (source != NULL, NULL);
if (excmap_def[0]) /* [0] should be 0 or it isn't initialized */
make_excmap_def();
memcpy(excmap, excmap_def, 256);
p = (guchar *) source;
/* Each source byte needs maximally four destination chars (\777) */
q = dest = g_malloc (strlen (source) * 4 + 1);
if (exceptions)
{
guchar *e = (guchar *) exceptions;
while (*e)
{
excmap[*e] = 1;
e++;
}
}
if (extra)
{
guchar *e = (guchar *) extra;
while (*e)
{
excmap[*e] = 0;
e++;
}
}
while (*p)
{
if (excmap[*p])
*q++ = *p;
else
{
switch (*p)
{
case '\b':
*q++ = '\\';
*q++ = 'b';
break;
case '\f':
*q++ = '\\';
*q++ = 'f';
break;
case '\n':
*q++ = '\\';
*q++ = 'n';
break;
case '\r':
*q++ = '\\';
*q++ = 'r';
break;
case '\t':
*q++ = '\\';
*q++ = 't';
break;
case '\\':
*q++ = '\\';
*q++ = '\\';
break;
case '"':
*q++ = '\\';
*q++ = '"';
break;
default:
*q++ = '\\';
*q++ = '0' + (((*p) >> 6) & 07);
*q++ = '0' + (((*p) >> 3) & 07);
*q++ = '0' + ((*p) & 07);
break;
}
}
p++;
}
*q = 0;
return dest;
}
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