src/common/fixargv0.c

#ifndef lint
static const char       RCSid[] = "$Id: fixargv0.c,v 2.9 2020/07/24 16:58:16 greg Exp $";
#endif
/*
 * Fix argv[0] and assign global progname variable
 *
 *  External symbols declared in paths.h
 */

#include "paths.h"
#include <ctype.h>

char    *progname = NULL;       /* global argv[0] */

char *
fixargv0(char *av0)             /* extract command name from full path */
{
        char  *cp = av0;

        while (*cp) cp++;               /* start from end */

        while (cp-- > av0)
                switch (*cp) {
                CASEDIRSEP:                     /* remove directory */
                        av0 = cp+1;
                        break;
#if defined(_WIN32) || defined(_WIN64)  /* only do for Windows: */
                case '.':                       /* remove extension */
                        *cp = '\0';
                        continue;
                default:                        /* convert to lower case */
                        *cp = tolower(*cp);
                        continue;
#endif
                }
        return(progname = av0);
}
Revision:	2.10
Committed:	Tue Jun 3 21:31:51 2025 UTC (3 days, 8 hours ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.9:	+14 -13 lines
Log Message:	refactor: More consistent use of global char * progname and fixargv0()
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: fixargv0.c,v 2.9 2020/07/24 16:58:16 greg Exp $";
3	#endif
4	/*
5	* Fix argv[0] and assign global progname variable
6	*
7	* External symbols declared in paths.h
8	*/
9
10	#include "paths.h"
11	#include <ctype.h>
12
13	char progname = NULL; / global argv[0] */
14
15	char *
16	fixargv0(char av0) / extract command name from full path */
17	{
18	char *cp = av0;
19
20	while (cp) cp++; / start from end */
21
22	while (cp-- > av0)
23	switch (*cp) {
24	CASEDIRSEP: /* remove directory */
25	av0 = cp+1;
26	break;
27	#if defined(_WIN32) \|\| defined(_WIN64) /* only do for Windows: */
28	case '.': /* remove extension */
29	*cp = '\0';
30	continue;
31	default: /* convert to lower case */
32	cp = tolower(cp);
33	continue;
34	#endif
35	}
36	return(progname = av0);
37	}