pjs/directory/c-sdk/ldap/libraries/libldap/unescape.c

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1.5 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
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* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
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* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
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* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
/*
* LIBLDAP unescape.c -- LDAP URL un-escape routines
* We also tolerate URLs that look like: <ldapurl> and <URL:ldapurl>
*/
#include "ldap-int.h"
static int unhex( char c );
void
nsldapi_hex_unescape( char *s )
{
/*
* Remove URL hex escapes from s... done in place. The basic concept for
* this routine is borrowed from the WWW library HTUnEscape() routine.
*/
char *p;
for ( p = s; *s != '\0'; ++s ) {
if ( *s == '%' ) {
if ( *++s != '\0' ) {
*p = unhex( *s ) << 4;
}
if ( *++s != '\0' ) {
*p++ += unhex( *s );
}
} else {
*p++ = *s;
}
}
*p = '\0';
}
static int
unhex( char c )
{
return( c >= '0' && c <= '9' ? c - '0'
: c >= 'A' && c <= 'F' ? c - 'A' + 10
: c - 'a' + 10 );
}