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Date:	Thu, 31 May 2007 15:29:59 +0300
From:	alex bodnaru <alexbodn AT 012 DOT net DOT il>
Subject:	Re: Finding a program's base directory
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hi

looks ok

alex

Robert Riebisch wrote:
> Hi!
> 
> I want to find a program's base directory. Program binary is in, e.g.,
> `C:\PROGRAMS\FOO\BIN\BAR.EXE'. get_base_dir() is called with argv[0] in
> pgm and shall return `C:\PROGRAMS\FOO'.
> 
> The following code works for me, but as I'm no C expert, I want you to
> have a look at it. Specifically I'm not sure about the `base_path !=
> NULL' comparison. Is it necessary or just a waste? Thanks in advance!
> 
> ***
> # ifdef __DJGPP__
> #  include <crt0.h>
> int _crt0_startup_flags = _CRT0_FLAG_USE_DOS_SLASHES;
> #  endif
> ***
> 
> ***
> static char *get_base_dir(char *pgm)
> {
>    static char base_path[MAX_PATH_LEN];
>    char *p;
> 
>    strncpy (base_path, pgm, MAX_PATH_LEN);
>    if (base_path != NULL)
>      {
> 	/* drop file name */
> 	p = strrchr (base_path, '\\');
> 	if (p != NULL)
> 	  {
> 	     *p = '\0';
> 	     /* drop also 'bin' */
> 	     p = strrchr (base_path, '\\');
> 	     if (p != NULL)
> 	       *p = '\0';
> 	  }
>      }
>    return base_path;
> }
> ***
> 
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