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update CLib

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git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60
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Sergey Semyonov (Serge)
2007-08-28 10:31:46 +00:00
parent 52facee6d5
commit 3be3768ce0
98 changed files with 9908 additions and 0 deletions
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programs/develop/open watcom/trunk/clib/environ/searchen.c Normal file
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/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: This function searches for the specified file in the
* 1) current directory or, failing that,
* 2) the paths listed in the specified environment variable
* until it finds the first occurrence of the file.
*
****************************************************************************/
#include "variety.h"
#include "widechar.h"
#undef __INLINE_FUNCTIONS__
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifndef __UNIX__
#include <direct.h>
#endif
#include <string.h>
#include "rtdata.h"
#include "seterrno.h"
#ifdef __WIDECHAR__
#include "wenviron.h"
#endif
#if defined(__UNIX__)
#ifdef __WIDECHAR__
#define PATH_SEPARATOR L'/'
#define LIST_SEPARATOR L':'
#else
#define PATH_SEPARATOR '/'
#define LIST_SEPARATOR ':'
#endif
#else
#ifdef __WIDECHAR__
#define PATH_SEPARATOR L'\\'
#define LIST_SEPARATOR L';'
#else
#define PATH_SEPARATOR '\\'
#define LIST_SEPARATOR ';'
#endif
#endif
_WCRTLINK void __F_NAME(_searchenv,_wsearchenv)( const CHAR_TYPE *name, const CHAR_TYPE *env_var, CHAR_TYPE *buffer )
{
CHAR_TYPE *p, *p2;
int prev_errno;
size_t len;
#ifdef __WIDECHAR__
if( _RWD_wenviron == NULL ) __create_wide_environment();
#endif
prev_errno = _RWD_errno;
if( __F_NAME(access,_waccess)( name, F_OK ) == 0 ) {
p = buffer; /* JBS 90/3/30 */
len = 0; /* JBS 04/1/06 */
for( ;; ) {
if( name[0] == PATH_SEPARATOR ) break;
if( name[0] == __F_NAME('.',L'.') ) break;
#ifndef __UNIX__
if( name[0] == __F_NAME('/',L'/') ) break;
if( (name[0] != __F_NAME('\0',L'\0')) && (name[1] == __F_NAME(':',L':')) ) break;
#endif
__F_NAME(getcwd,_wgetcwd)( buffer, _MAX_PATH );
len = __F_NAME(strlen,wcslen)( buffer );
p = &buffer[ len ];
if( p[-1] != PATH_SEPARATOR ) {
if( len < (_MAX_PATH - 1) ) {
*p++ = PATH_SEPARATOR;
len++;
}
}
break;
}
*p = __F_NAME('\0',L'\0');
__F_NAME(strncat,wcsncat)( p, name, (_MAX_PATH - 1) - len );
return;
}
p = __F_NAME(getenv,_wgetenv)( env_var );
if( p != NULL ) {
for( ;; ) {
if( *p == __F_NAME('\0',L'\0') ) break;
p2 = buffer;
len = 0; /* JBS 04/1/06 */
while( *p ) {
if( *p == LIST_SEPARATOR ) break;
if( *p != __F_NAME('"',L'"') ) {
if( len < (_MAX_PATH-1) ) {
*p2++ = *p; /* JBS 00/9/29 */
len++;
}
}
p++;
}
/* check for zero-length prefix which represents CWD */
if( p2 != buffer ) { /* JBS 90/3/30 */
if( p2[-1] != PATH_SEPARATOR
#ifndef __UNIX__
&& p2[-1] != __F_NAME('/','/')
&& p2[-1] != __F_NAME(':',':')
#endif
) {
if( len < (_MAX_PATH - 1) ) {
*p2++ = PATH_SEPARATOR;
len++;
}
}
*p2 = __F_NAME('\0',L'\0');
len += __F_NAME(strlen,wcslen)( name );/* JBS 04/12/23 */
if( len < _MAX_PATH ) {
__F_NAME(strcat,wcscat)( p2, name );
/* check to see if file exists */
if( __F_NAME(access,_waccess)( buffer, 0 ) == 0 ) {
__set_errno( prev_errno );
return;
}
}
}
if( *p == '\0' ) break;
++p;
}
}
buffer[0] = __F_NAME( '\0',L'\0' );
}