1 files changed, 136 insertions, 0 deletions
diff --git a/builtin/ls-remote.c b/builtin/ls-remote.c
new file mode 100644
index 0000000000..4554dbc8a9
--- /dev/null
+++ b/builtin/ls-remote.c
@@ -0,0 +1,136 @@
+#include "builtin.h"
+#include "cache.h"
+#include "transport.h"
+#include "remote.h"
+
+static const char ls_remote_usage[] =
+"git ls-remote [--heads] [--tags]  [-u <exec> | --upload-pack <exec>]\n"
+"                     [-q | --quiet] [--exit-code] [--get-url] [<repository> [<refs>...]]";
+
+/*
+ * Is there one among the list of patterns that match the tail part
+ * of the path?
+ */
+static int tail_match(const char **pattern, const char *path)
+{
+	const char *p;
+	char pathbuf[PATH_MAX];
+
+	if (!pattern)
+		return 1; /* no restriction */
+
+	if (snprintf(pathbuf, sizeof(pathbuf), "/%s", path) > sizeof(pathbuf))
+		return error("insanely long ref %.*s...", 20, path);
+	while ((p = *(pattern++)) != NULL) {
+		if (!wildmatch(p, pathbuf, 0, NULL))
+			return 1;
+	}
+	return 0;
+}
+
+int cmd_ls_remote(int argc, const char **argv, const char *prefix)
+{
+	int i;
+	const char *dest = NULL;
+	unsigned flags = 0;
+	int get_url = 0;
+	int quiet = 0;
+	int status = 0;
+	const char *uploadpack = NULL;
+	const char **pattern = NULL;
+
+	struct remote *remote;
+	struct transport *transport;
+	const struct ref *ref;
+
+	if (argc == 2 && !strcmp("-h", argv[1]))
+		usage(ls_remote_usage);
+
+	for (i = 1; i < argc; i++) {
+		const char *arg = argv[i];
+
+		if (*arg == '-') {
+			if (starts_with(arg, "--upload-pack=")) {
+				uploadpack = arg + 14;
+				continue;
+			}
+			if (starts_with(arg, "--exec=")) {
+				uploadpack = arg + 7;
+				continue;
+			}
+			if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
+				flags |= REF_TAGS;
+				continue;
+			}
+			if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
+				flags |= REF_HEADS;
+				continue;
+			}
+			if (!strcmp("--refs", arg)) {
+				flags |= REF_NORMAL;
+				continue;
+			}
+			if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
+				quiet = 1;
+				continue;
+			}
+			if (!strcmp("--get-url", arg)) {
+				get_url = 1;
+				continue;
+			}
+			if (!strcmp("--exit-code", arg)) {
+				/* return this code if no refs are reported */
+				status = 2;
+				continue;
+			}
+			usage(ls_remote_usage);
+		}
+		dest = arg;
+		i++;
+		break;
+	}
+
+	if (argv[i]) {
+		int j;
+		pattern = xcalloc(argc - i + 1, sizeof(const char *));
+		for (j = i; j < argc; j++) {
+			int len = strlen(argv[j]);
+			char *p = xmalloc(len + 3);
+			sprintf(p, "*/%s", argv[j]);
+			pattern[j - i] = p;
+		}
+	}
+	remote = remote_get(dest);
+	if (!remote) {
+		if (dest)
+			die("bad repository '%s'", dest);
+		die("No remote configured to list refs from.");
+	}
+	if (!remote->url_nr)
+		die("remote %s has no configured URL", dest);
+
+	if (get_url) {
+		printf("%s\n", *remote->url);
+		return 0;
+	}
+
+	transport = transport_get(remote, NULL);
+	if (uploadpack != NULL)
+		transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
+
+	ref = transport_get_remote_refs(transport);
+	if (transport_disconnect(transport))
+		return 1;
+
+	if (!dest && !quiet)
+		fprintf(stderr, "From %s\n", *remote->url);
+	for ( ; ref; ref = ref->next) {
+		if (!check_ref_type(ref, flags))
+			continue;
+		if (!tail_match(pattern, ref->name))
+			continue;
+		printf("%s	%s\n", sha1_to_hex(ref->old_sha1), ref->name);
+		status = 0; /* we found something */
+	}
+	return status;
+}