src/common/fixargv0.c

#ifndef lint
static const char       RCSid[] = "$Id: fixargv0.c,v 2.5 2003/10/27 10:19:31 schorsch Exp $";
#endif
/*
 * Fix argv[0] for DOS environments
 *
 *  External symbols declared in paths.h
 */

#include "copyright.h"

#include <ctype.h>
#include <string.h>

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

        while (*cp) cp++;               /* start from end */
        while (cp-- > av0)
                switch (*cp) {          /* fix up command name */
                case '.':                       /* remove extension */
                        *cp = '\0';
                        continue;
                case '\\':                      /* remove directory */
                        strcpy(av0, cp+1);
                        break;
                default:                        /* convert to lower case */
                        *cp = tolower(*cp);
                        continue;
                }
        return(av0);
}


Revision:	2.6
Committed:	Sat Mar 19 00:44:46 2016 UTC (8 years, 2 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+4 -2 lines
Log Message:	When argv is dynamically allocated, changing the pointer values crashes deallocation (yes, I'm doing weird things).
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: fixargv0.c,v 2.5 2003/10/27 10:19:31 schorsch Exp $";
3	#endif
4	/*
5	* Fix argv[0] for DOS environments
6	*
7	* External symbols declared in paths.h
8	*/
9
10	#include "copyright.h"
11
12	#include <ctype.h>
13	#include <string.h>
14
15	extern char *
16	fixargv0(av0) /* extract command name from full path */
17	char *av0;
18	{
19	register char *cp = av0;
20
21	while (cp) cp++; / start from end */
22	while (cp-- > av0)
23	switch (cp) { / fix up command name */
24	case '.': /* remove extension */
25	*cp = '\0';
26	continue;
27	case '\\': /* remove directory */
28	strcpy(av0, cp+1);
29	break;
30	default: /* convert to lower case */
31	cp = tolower(cp);
32	continue;
33	}
34	return(av0);
35	}
36
37