tuklib_progname.c

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//
//
//  Author:     Lasse Collin
//
//  This file has been put into the public domain.
//  You can do whatever you want with this file.
//
 
#include "tuklib_progname.h"
#include <string.h>
 
 
#if !HAVE_DECL_PROGRAM_INVOCATION_NAME
char *progname = NULL;
#endif
 
 
extern void
tuklib_progname_init(char **argv)
{
#ifdef TUKLIB_DOSLIKE
    // On these systems, argv[0] always has the full path and .exe
    // suffix even if the user just types the plain program name.
    // We modify argv[0] to make it nicer to read.
 
    // Strip the leading path.
    char *p = argv[0] + strlen(argv[0]);
    while (argv[0] < p && p[-1] != '/' && p[-1] != '\\')
        --p;
 
    argv[0] = p;
 
    // Strip the .exe suffix.
    p = strrchr(p, '.');
    if (p != NULL)
        *p = '\0';
 
    // Make it lowercase.
    for (p = argv[0]; *p != '\0'; ++p)
        if (*p >= 'A' && *p <= 'Z')
            *p = *p - 'A' + 'a';
#endif
 
    progname = argv[0];
    return;
}