non/nonlib/string_util.C

86 lines
2.3 KiB
C

/*******************************************************************************/
/* Copyright (C) 2012 Jonathan Moore Liles */
/* */
/* This program is free software; you can redistribute it and/or modify it */
/* under the terms of the GNU 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 General Public License for */
/* more details. */
/* */
/* You should have received a copy of the GNU General Public License along */
/* with This program; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#include <string.h>
#include <stdio.h>
void unescape_url ( char *url )
{
char *r, *w;
r = w = url;
for ( ; *r; r++, w++ )
{
if ( *r == '%' )
{
char data[3] = { *(r + 1), *(r + 2), 0 };
int c;
sscanf( data, "%2X", &c );
*w = c;
r += 2;
}
else
*w = *r;
}
*w = 0;
}
char *escape_url ( const char *url )
{
const char *s;
char *w;
char r[1024];
s = url;
w = r;
for ( ; *s && w < r + sizeof( r ); s++, w++ )
{
switch ( *s )
{
case ' ':
case '<':
case '>':
case '%':
case '#':
case '*':
case ',':
sprintf( w, "%%%2X", *s );
w += 2;
break;
default:
*w = *s;
break;
}
}
*w = 0;
return strdup( r );
}