X-Git-Url: http://git.tuebingen.mpg.de/?p=adu.git;a=blobdiff_plain;f=string.c;h=13555550efb6e1e567f66ca6f03158b79645ed7e;hp=946faabdfd09ce688059c5d8ce15e140af282a29;hb=59af25aafd51b706ed67784aa84332965c31bb26;hpb=d0f564069d8445e5ffe03c57ff63721f4c47877e

diff --git a/string.c b/string.c
index 946faab..1355555 100644
--- a/string.c
+++ b/string.c
@@ -373,3 +373,35 @@ err:
 	free(argv);
 	return ret;
 }
+
+char *absolute_path(const char *path)
+{
+	char *cwd, *ap;
+	long int path_max;
+
+	if (!path || !path[0])
+		return NULL;
+	if (path[0] == '/')
+		return adu_strdup(path);
+
+#ifdef PATH_MAX
+	path_max = PATH_MAX;
+#else
+	/*
+	 * The result of pathconf(3) may be huge and unsuitable for mallocing
+	 * memory. OTOH pathconf(3) may return -1 to signify that PATH_MAX is
+	 * not bounded.
+	 */
+	path_max = pathconf(name, _PC_PATH_MAX);
+	if (path_max <= 0 || path_max >= 4096)
+		path_max = 4096;
+#endif
+	cwd = adu_malloc(path_max);
+	if (!getcwd(cwd, path_max)) {
+		free(cwd);
+		return NULL;
+	}
+	ap = make_message("%s/%s", cwd, path);
+	free(cwd);
+	return ap;
+}