#include "system.h"
#include "findme.h"
const char * findProgramPath(const char * argv0) {
char * path = getenv("PATH");
char * pathbuf;
char * start, * chptr;
char * buf;
if (argv0 == NULL) return NULL;
if (strchr(argv0, '/'))
return xstrdup(argv0);
if (path == NULL) return NULL;
start = pathbuf = (char *)alloca(strlen(path) + 1);
buf = (char *)malloc(strlen(path) + strlen(argv0) + sizeof("/"));
if (buf == NULL) return NULL;
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;
}