[PATCH] git-peek-remote: show tags and heads from a remote repository.

Add a git-peek-remote command that talks with upload-pack the
same way git-fetch-pack and git-clone-pack do, to show the
references the remote side has on the standard output.

A later patch introduces git-ls-remote that implements a UI to
store tag values retrieved using this command.

Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/Makefile b/Makefile
index d440f82..e4df945 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -49,7 +49,7 @@ PROG=   git-update-cache git-diff-files git-init-db git-write-tree \
        git-diff-stages git-rev-parse git-patch-id git-pack-objects \
        git-unpack-objects git-verify-pack git-receive-pack git-send-pack \
        git-prune-packed git-fetch-pack git-upload-pack git-clone-pack \
-       git-show-index git-daemon git-var
+       git-show-index git-daemon git-var git-peek-remote
 
 all: $(PROG)
 
@@ -150,6 +150,7 @@ git-send-pack: send-pack.c
 git-prune-packed: prune-packed.c
 git-fetch-pack: fetch-pack.c
 git-var: var.c
+git-peek-remote: peek-remote.c
 
 git-http-pull: LIBS += -lcurl
 git-rev-list: LIBS += -lssl

diff --git a/peek-remote.c b/peek-remote.c
new file mode 100644 (file)
index 0000000..4b1d0d5
--- /dev/null
+++ b/peek-remote.c
@@ -0,0 +1,55 @@
+#include "cache.h"
+#include "refs.h"
+#include "pkt-line.h"
+#include <sys/wait.h>
+
+static const char peek_remote_usage[] =
+"git-peek-remote [--exec=upload-pack] [host:]directory";
+static const char *exec = "git-upload-pack";
+
+static int peek_remote(int fd[2])
+{
+       struct ref *ref;
+
+       get_remote_heads(fd[0], &ref, 0, NULL);
+       packet_flush(fd[1]);
+
+       while (ref) {
+               printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
+               ref = ref->next;
+       }
+       return 0;
+}
+
+int main(int argc, char **argv)
+{
+       int i, ret;
+       char *dest = NULL;
+       int fd[2];
+       pid_t pid;
+
+       for (i = 1; i < argc; i++) {
+               char *arg = argv[i];
+
+               if (*arg == '-') {
+                       if (!strncmp("--exec=", arg, 7))
+                               exec = arg + 7;
+                       else
+                               usage(peek_remote_usage);
+                       continue;
+               }
+               dest = arg;
+               break;
+       }
+       if (!dest || i != argc - 1)
+               usage(peek_remote_usage);
+
+       pid = git_connect(fd, dest, exec);
+       if (pid < 0)
+               return 1;
+       ret = peek_remote(fd);
+       close(fd[0]);
+       close(fd[1]);
+       finish_connect(pid);
+       return ret;
+}