Merge branch 'lt/push' into next

* lt/push:
  git builtin "push"
  git-format-patch: Use rfc2822 compliant date.

1 files changed, 255 insertions, 0 deletions

diff --git a/builtin-push.c b/builtin-push.c
new file mode 100644
index 0000000000..a0c1caab52
--- /dev/null
+++ b/builtin-push.c
@@ -0,0 +1,255 @@
+/*
+ * "git push"
+ */
+#include "cache.h"
+#include "refs.h"
+#include "run-command.h"
+#include "builtin.h"
+
+#define MAX_URI (16)
+
+static const char push_usage[] = "git push [--all] [--tags] [--force] <repository> [<refspec>...]";
+
+static int all = 0, tags = 0, force = 0, thin = 1;
+static const char *execute = NULL;
+
+#define BUF_SIZE (2084)
+static char buffer[BUF_SIZE];
+
+static const char **refspec = NULL;
+static int refspec_nr = 0;
+
+static void add_refspec(const char *ref)
+{
+	int nr = refspec_nr + 1;
+	refspec = xrealloc(refspec, nr * sizeof(char *));
+	refspec[nr-1] = ref;
+	refspec_nr = nr;
+}
+
+static int expand_one_ref(const char *ref, const unsigned char *sha1)
+{
+	/* Ignore the "refs/" at the beginning of the refname */
+	ref += 5;
+
+	if (strncmp(ref, "tags/", 5))
+		return 0;
+
+	add_refspec(strdup(ref));
+	return 0;
+}
+
+static void expand_refspecs(void)
+{
+	if (all) {
+		if (refspec_nr)
+			die("cannot mix '--all' and a refspec");
+
+		/*
+		 * No need to expand "--all" - we'll just use
+		 * the "--all" flag to send-pack
+		 */
+		return;
+	}
+	if (!tags)
+		return;
+	for_each_ref(expand_one_ref);
+}
+
+static void set_refspecs(const char **refs, int nr)
+{
+	if (nr) {
+		size_t bytes = nr * sizeof(char *);
+
+		refspec = xrealloc(refspec, bytes);
+		memcpy(refspec, refs, bytes);
+		refspec_nr = nr;
+	}
+	expand_refspecs();
+}
+
+static int get_remotes_uri(const char *repo, const char *uri[MAX_URI])
+{
+	int n = 0;
+	FILE *f = fopen(git_path("remotes/%s", repo), "r");
+
+	if (!f)
+		return -1;
+	while (fgets(buffer, BUF_SIZE, f)) {
+		char *s, *p;
+
+		if (strncmp("URL: ", buffer, 5))
+			continue;
+		s = buffer + 5;
+
+		/* Remove whitespace at the head.. */
+		while (isspace(*s))
+			s++;
+		if (!*s)
+			continue;
+
+		/* ..and at the end */
+		p = s + strlen(s);
+		while (isspace(p[-1]))
+			*--p = 0;
+
+		uri[n++] = strdup(s);
+		if (n == MAX_URI)
+			break;
+	}
+	fclose(f);
+	if (!n)
+		die("remote '%s' has no URL", repo);
+	return n;
+}
+
+static int get_branches_uri(const char *repo, const char *uri[MAX_URI])
+{
+	const char *slash = strchr(repo, '/');
+	int n = slash ? slash - repo : 1000;
+	FILE *f = fopen(git_path("branches/%.*s", n, repo), "r");
+	char *s, *p;
+	int len;
+
+	if (!f)
+		return 0;
+	s = fgets(buffer, BUF_SIZE, f);
+	fclose(f);
+	if (!s)
+		return 0;
+	while (isspace(*s))
+		s++;
+	if (!*s)
+		return 0;
+	p = s + strlen(s);
+	while (isspace(p[-1]))
+		*--p = 0;
+	len = p - s;
+	if (slash)
+		len += strlen(slash);
+	p = xmalloc(len + 1);
+	strcpy(p, s);
+	if (slash)
+		strcat(p, slash);
+	uri[0] = p;
+	return 1;
+}
+
+static int get_uri(const char *repo, const char *uri[MAX_URI])
+{
+	int n;
+
+	if (*repo != '/') {
+		n = get_remotes_uri(repo, uri);
+		if (n > 0)
+			return n;
+
+		n = get_branches_uri(repo, uri);
+		if (n > 0)
+			return n;
+	}
+
+	uri[0] = repo;
+	return 1;
+}
+
+static int do_push(const char *repo)
+{
+	const char *uri[MAX_URI];
+	int i, n = get_uri(repo, uri);
+	int remote;
+	const char **argv;
+	int argc;
+
+	n = get_uri(repo, uri);
+	if (n <= 0)
+		die("bad repository '%s'", repo);
+
+	argv = xmalloc((refspec_nr + 10) * sizeof(char *));
+	argv[0] = "dummy-send-pack";
+	argc = 1;
+	if (all)
+		argv[argc++] = "--all";
+	if (force)
+		argv[argc++] = "--force";
+	if (execute)
+		argv[argc++] = execute;
+	if (thin)
+		argv[argc++] = "--thin";
+	remote = argc;
+	argv[argc++] = "dummy-remote";
+	while (refspec_nr--)
+		argv[argc++] = *refspec++;
+	argv[argc] = NULL;
+
+	for (i = 0; i < n; i++) {
+		int error;
+		const char *dest = uri[i];
+		const char *sender = "git-send-pack";
+		if (!strncmp(dest, "http://", 7) ||
+		    !strncmp(dest, "https://", 8))
+			sender = "git-http-push";
+		argv[0] = sender;
+		argv[remote] = dest;
+		error = run_command_v(argc, argv);
+		if (!error)
+			continue;
+		switch (error) {
+		case -ERR_RUN_COMMAND_FORK:
+			die("unable to fork for %s", sender);
+		case -ERR_RUN_COMMAND_EXEC:
+			die("unable to exec %s", sender);
+		case -ERR_RUN_COMMAND_WAITPID:
+		case -ERR_RUN_COMMAND_WAITPID_WRONG_PID:
+		case -ERR_RUN_COMMAND_WAITPID_SIGNAL:
+		case -ERR_RUN_COMMAND_WAITPID_NOEXIT:
+			die("%s died with strange error", sender);
+		default:
+			return -error;
+		}
+	}
+	return 0;
+}
+
+int cmd_push(int argc, const char **argv, char **envp)
+{
+	int i;
+	const char *repo = "origin";	// default repository
+
+	for (i = 1; i < argc; i++) {
+		const char *arg = argv[i];
+
+		if (arg[0] != '-') {
+			repo = arg;
+			i++;
+			break;
+		}
+		if (!strcmp(arg, "--all")) {
+			all = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--tags")) {
+			tags = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--force")) {
+			force = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--thin")) {
+			thin = 1;
+			continue;
+		}
+		if (!strcmp(arg, "--no-thin")) {
+			thin = 0;
+			continue;
+		}
+		if (!strncmp(arg, "--exec=", 7)) {
+			execute = arg;
+			continue;
+		}
+		usage(push_usage);
+	}
+	set_refspecs(argv + i, argc - i);
+	return do_push(repo);
+}