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-rw-r--r--lib/popt/findme.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/lib/popt/findme.c b/lib/popt/findme.c
new file mode 100644
index 0000000000..b28981ba1f
--- /dev/null
+++ b/lib/popt/findme.c
@@ -0,0 +1,50 @@
+/** \ingroup popt
+ * \file popt/findme.c
+ */
+
+/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
+ file accompanying popt source distributions, available from
+ ftp://ftp.rpm.org/pub/rpm/dist. */
+
+#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; /* XXX can't happen */
+ /* If there is a / in the argv[0], it has to be an absolute path */
+ 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; /* XXX can't happen */
+ strcpy(pathbuf, path);
+
+ chptr = NULL;
+ /*@-branchstate@*/
+ 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);
+ /*@=branchstate@*/
+
+ free(buf);
+
+ return NULL;
+}