dmake/msdos/zortech/tempnam.c

   1 /* RCS  $Id: tempnam.c,v 1.1.1.1 2000-09-22 15:33:29 hr Exp $
   2 --
   3 -- SYNOPSIS
   4 --      temname
   5 --
   6 -- DESCRIPTION
   7 --      temp file name generation code.
   8 --
   9 -- AUTHOR
  10 --      Dennis Vadura, dvadura@dmake.wticorp.com
  11 --
  12 -- WWW
  13 --      http://dmake.wticorp.com/
  14 --
  15 -- COPYRIGHT
  16 --      Copyright (c) 1996,1997 by WTI Corp.  All rights reserved.
  17 --
  18 --      This program is NOT free software; you can redistribute it and/or
  19 --      modify it under the terms of the Software License Agreement Provided
  20 --      in the file <distribution-root>/readme/license.txt.
  21 --
  22 -- LOG
  23 --      Use cvs log to obtain detailed change logs.
  24 */
  25 /*LINTLIBRARY*/
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <dos.h>
  30
  31 #if defined(max)
  32 #   undef  max
  33 #endif
  34 #define max(A,B) (((A)<(B))?(B):(A))
  35
  36 extern char *mktemp();
  37 extern int access();
  38 int d_access();
  39
  40 /* Zortech C stdio.h doesn't define P_tmpdir, so let's do it here */
  41 /* Under DOS leave the default tmpdir pointing here!        */
  42 static char *P_tmpdir = "";
  43
  44 char *
  45 tempnam(dir, prefix)
  46 const char *dir;        /* use this directory please (if non-NULL) */
  47 const char *prefix;     /* use this (if non-NULL) as filename prefix */
  48 {
  49    static         int count = 0;
  50    register char *p, *q, *tmpdir;
  51    int            tl=0, dl=0, pl;
  52    char       buf[30];
  53
  54    pl = strlen(P_tmpdir);
  55
  56    if( (tmpdir = getenv("TMPDIR")) != NULL ) tl = strlen(tmpdir);
  57    else if( (tmpdir = getenv("TMP")) != NULL ) tl = strlen(tmpdir);
  58    if( dir != NULL ) dl = strlen(dir);
  59
  60    if( (p = malloc((unsigned)(max(max(dl,tl),pl)+13))) == NULL )
  61      return(NULL);
  62
  63    *p = '\0';
  64
  65    if( (tl == 0) || (d_access( strcpy(p, tmpdir), 0) != 0) )
  66      if( (dl == 0) || (d_access( strcpy(p, dir), 0) != 0) )
  67     if( d_access( strcpy(p, P_tmpdir), 0) != 0 )
  68        if( !prefix )
  69           prefix = "tp";
  70
  71    if(prefix)
  72    {
  73       *(p+strlen(p)+2) = '\0';
  74       (void)strncat(p, prefix, 2);
  75    }
  76
  77    sprintf( buf, "%08x", _psp );
  78    buf[6]='\0';
  79    (void)strcat(p, buf );
  80    sprintf( buf, "%04d", count++ );
  81    q=p+strlen(p)-6;
  82    *q++ = buf[0]; *q++ = buf[1];
  83    *q++ = buf[2]; *q++ = buf[3];
  84
  85    if( (q = strrchr(p,'.')) != NULL ) *q = '\0';
  86
  87    return(p);
  88 }
  89
  90
  91
  92 d_access( name, flag )
  93 char *name;
  94 int  flag;
  95 {
  96    extern char *DirSepStr;
  97    char *p;
  98    int r;
  99
 100    if( name == NULL || !*name ) return(1);  /* NULL dir means current dir */
 101    r = access( name, flag );
 102    p = name+strlen(name)-1;
 103    if(*p != '/' && *p != '\\') strcat( p, DirSepStr );
 104
 105    return( r );
 106 }