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/* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING
file accompanying popt source distributions, available from
ftp://ftp.redhat.com/pub/code/popt */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef __NeXT
/* access macros are not declared in non posix mode in unistd.h -
don't try to use posix on NeXTstep 3.3 ! */
#include <libc.h>
#endif
#if HAVE_ALLOCA_H
# include <alloca.h>
#endif
#include "findme.h"
char * findProgramPath(char * argv0) {
char * path = getenv("PATH");
char * pathbuf;
char * start, * chptr;
char * buf;
/* If there is a / in the argv[0], it has to be an absolute
path */
if (strchr(argv0, '/'))
return strdup(argv0);
if (!path) return NULL;
start = pathbuf = alloca(strlen(path) + 1);
buf = malloc(strlen(path) + strlen(argv0) + 2);
strcpy(pathbuf, path);
chptr = NULL;
do {
if ((chptr = strchr(start, ':')))
*chptr = '\0';
sprintf(buf, "%s/%s", start, argv0);
if (!access(buf, X_OK))
return buf;
if (chptr)
start = chptr + 1;
else
start = NULL;
} while (start && *start);
free(buf);
return NULL;
}
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