device-nodes: move device node specific code to own file

In the process, rename udev_encode_string which is poorly named
for what it does. It deals specifically with encoding names that
udev creates and has its own rules: utf8 is valid but some ascii
is not  (e.g. path separators), and everything else is simply escaped.
Rename it to encode_devnode_name.

Adopted for eudev: Anthony G. Basile <blueness@gentoo.org>

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/test/test-device-nodes.c b/test/test-device-nodes.c
new file mode 100644
index 0000000000..2f3dedb90f
--- /dev/null
+++ b/test/test-device-nodes.c
@@ -0,0 +1,55 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Dave Reisner
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/types.h>
+
+#include "device-nodes.h"
+#include "util.h"
+
+/* helpers for test_encode_devnode_name */
+static char *do_encode_string(const char *in) {
+        size_t out_len = strlen(in) * 4;
+        char *out = malloc(out_len);
+
+        assert_se(out);
+        assert_se(encode_devnode_name(in, out, out_len) >= 0);
+        puts(out);
+
+        return out;
+}
+
+static bool expect_encoded_as(const char *in, const char *expected) {
+        _cleanup_free_ char *encoded = do_encode_string(in);
+        return streq(encoded, expected);
+}
+
+static void test_encode_devnode_name(void) {
+        assert_se(expect_encoded_as("systemd sucks", "systemd\\x20sucks"));
+        assert_se(expect_encoded_as("pinkiepie", "pinkiepie"));
+        assert_se(expect_encoded_as("valíd\\ųtf8", "valíd\\x5cųtf8"));
+        assert_se(expect_encoded_as("s/ash/ng", "s\\x2fash\\x2fng"));
+}
+
+int main(int argc, char *argv[]) {
+        test_encode_devnode_name();
+
+        return 0;
+}