139 lines
4.1 KiB
C
139 lines
4.1 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Internal helper routines __MkTmpFile() and __RmTmpFile().
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*
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****************************************************************************/
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#include "variety.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <direct.h>
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#include <string.h>
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#include <process.h>
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#include "rtdata.h"
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#include "tmpfname.h"
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static unsigned __GetTmpPath( char *buf )
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{
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#ifndef __NETWARE__
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static char *evars[] = { "TMP", "TEMP", "TMPDIR", "TEMPDIR", "" };
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char **evar;
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char *tmp;
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#endif
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unsigned i;
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buf[0] = '\0'; // initialize path
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#ifdef __NETWARE__
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getcwd( buf, PATH_MAX ); // No environment vars on Netware
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#else
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for( evar = evars; **evar; ++evar ) {
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tmp = getenv( *evar );
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if( (tmp != NULL) && (strlen( tmp ) <= PATH_MAX) ) {
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tmp = _fullpath( buf, tmp, PATH_MAX );
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break;
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}
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}
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/*
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* If we didn't match on any environment vars, get current working dir
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*/
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if( buf[0] == '\0' ) {
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getcwd( buf, PATH_MAX );
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}
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#endif
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// if last char is not a path delimiter then append one
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i = strlen( buf );
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if( i > 0 ) i--;
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if( (buf[i] != '\\') && (buf[i] != '/') ) {
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// if buf[i] is a null char then the following has no effect as planned
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i++;
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buf[i] = '\\';
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i++;
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buf[i] = '\0';
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}
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return( i );
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}
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static char __hex( int num )
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{
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num += '0';
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if( num > '9' ) {
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num += 'a' - '0' - 10;
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}
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return( num );
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}
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#if defined( __NETWARE__ )
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extern int GetThreadID( void );
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#define getuniqueid() GetThreadID()
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#elif defined( __NT__ )
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#define getuniqueid() ((getpid() << 12) + *_threadid)
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#elif defined( __OS2__ )
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#define getuniqueid() ((getpid() << 12) + *_threadid)
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#else
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#define getuniqueid() (getpid())
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#endif
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void __MkTmpFile( char *buf, int num )
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{
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unsigned pid;
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unsigned i;
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char *ptr;
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pid = getuniqueid();
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// JBS on Win32 pid's range from 0 to n where n is not very large for
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// most systems (e.g. 500 would indicate many, many processes are active).
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// #if defined(__386__) || defined(__AXP__) || defined(__PPC__)
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// // try to use more of the 32bit pid bits
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// pid |= pid >> 16;
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// #endif
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i = __GetTmpPath( buf );
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ptr = &buf[ i ];
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ptr[0] = 't';
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for( i = 7; i != 0; i-- ) { // JBS use 7 hex digits instead of 4
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ptr[i] = __hex( pid & 0x000F );
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pid = pid >> 4;
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}
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ptr[8] = '.';
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ptr[9] = 't';
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ptr[10] = __hex( (num >> 4) & 0x000F );
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ptr[11] = __hex( num & 0x000F );
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ptr[12] = '\0';
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}
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void __RmTmpFile( FILE *fp )
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{
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char name[PATH_MAX + _TMPFNAME_LENGTH + 1]; /* 02-aug-90 */
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__MkTmpFile( name, _FP_TMPFCHAR(fp) );
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remove( name );
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}
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