builtin/push.c - git - Git at Google

 /*
  * "git push"
  */
 #include "cache.h"
 #include "refs.h"
 #include "run-command.h"
 #include "builtin.h"
 #include "remote.h"
 #include "transport.h"
 #include "parse-options.h"

 static const char * const push_usage[] = {
 	"git push [<options>] [<repository> [<refspec>...]]",
 	NULL,
 };

 static int thin;
 static int deleterefs;
 static const char *receivepack;
 static int verbosity;
 static int progress;

 static const char **refspec;
 static int refspec_nr;
 static int refspec_alloc;

 static void add_refspec(const char *ref)
 {
 	refspec_nr++;
 	ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
 	refspec[refspec_nr-1] = ref;
 }

 static void set_refspecs(const char **refs, int nr)
 {
 	int i;
 	for (i = 0; i < nr; i++) {
 		const char *ref = refs[i];
 		if (!strcmp("tag", ref)) {
 			char *tag;
 			int len;
 			if (nr <= ++i)
 				die(_("tag shorthand without <tag>"));
 			len = strlen(refs[i]) + 11;
 			if (deleterefs) {
 				tag = xmalloc(len+1);
 				strcpy(tag, ":refs/tags/");
 			} else {
 				tag = xmalloc(len);
 				strcpy(tag, "refs/tags/");
 			}
 			strcat(tag, refs[i]);
 			ref = tag;
 		} else if (deleterefs && !strchr(ref, ':')) {
 			char *delref;
 			int len = strlen(ref)+1;
 			delref = xmalloc(len+1);
 			strcpy(delref, ":");
 			strcat(delref, ref);
 			ref = delref;
 		} else if (deleterefs)
 			die(_("--delete only accepts plain target ref names"));
 		add_refspec(ref);
 	}
 }

 static void setup_push_upstream(struct remote *remote)
 {
 	struct strbuf refspec = STRBUF_INIT;
 	struct branch *branch = branch_get(NULL);
 	if (!branch)
 		die(_("You are not currently on a branch.\n"
 		    "To push the history leading to the current (detached HEAD)\n"
 		    "state now, use\n"
 		    "\n"
 		    "    git push %s HEAD:<name-of-remote-branch>\n"),
 		    remote->name);
 	if (!branch->merge_nr || !branch->merge)
 		die(_("The current branch %s has no upstream branch.\n"
 		    "To push the current branch and set the remote as upstream, use\n"
 		    "\n"
 		    "    git push --set-upstream %s %s\n"),
 		    branch->name,
 		    remote->name,
 		    branch->name);
 	if (branch->merge_nr != 1)
 		die(_("The current branch %s has multiple upstream branches, "
 		    "refusing to push."), branch->name);
 	strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
 	add_refspec(refspec.buf);
 }

 static void setup_default_push_refspecs(struct remote *remote)
 {
 	switch (push_default) {
 	default:
 	case PUSH_DEFAULT_MATCHING:
 		add_refspec(":");
 		break;

 	case PUSH_DEFAULT_UPSTREAM:
 		setup_push_upstream(remote);
 		break;

 	case PUSH_DEFAULT_CURRENT:
 		add_refspec("HEAD");
 		break;

 	case PUSH_DEFAULT_NOTHING:
 		die(_("You didn't specify any refspecs to push, and "
 		    "push.default is \"nothing\"."));
 		break;
 	}
 }

 static int push_with_options(struct transport *transport, int flags)
 {
 	int err;
 	int nonfastforward;

 	transport_set_verbosity(transport, verbosity, progress);

 	if (receivepack)
 		transport_set_option(transport,
 				     TRANS_OPT_RECEIVEPACK, receivepack);
 	if (thin)
 		transport_set_option(transport, TRANS_OPT_THIN, "yes");

 	if (verbosity > 0)
 		fprintf(stderr, _("Pushing to %s\n"), transport->url);
 	err = transport_push(transport, refspec_nr, refspec, flags,
 			     &nonfastforward);
 	if (err != 0)
 		error(_("failed to push some refs to '%s'"), transport->url);

 	err |= transport_disconnect(transport);

 	if (!err)
 		return 0;

 	if (nonfastforward && advice_push_nonfastforward) {
 		fprintf(stderr, _("To prevent you from losing history, non-fast-forward updates were rejected\n"
 				"Merge the remote changes (e.g. 'git pull') before pushing again.  See the\n"
 				"'Note about fast-forwards' section of 'git push --help' for details.\n"));
 	}

 	return 1;
 }

 static int do_push(const char *repo, int flags)
 {
 	int i, errs;
 	struct remote *remote = remote_get(repo);
 	const char **url;
 	int url_nr;

 	if (!remote) {
 		if (repo)
 			die(_("bad repository '%s'"), repo);
 		die(_("No configured push destination.\n"
 		    "Either specify the URL from the command-line or configure a remote repository using\n"
 		    "\n"
 		    "    git remote add <name> <url>\n"
 		    "\n"
 		    "and then push using the remote name\n"
 		    "\n"
 		    "    git push <name>\n"));
 	}

 	if (remote->mirror)
 		flags |= (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE);

 	if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
 		if (!strcmp(*refspec, "refs/tags/*"))
 			return error(_("--all and --tags are incompatible"));
 		return error(_("--all can't be combined with refspecs"));
 	}

 	if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
 		if (!strcmp(*refspec, "refs/tags/*"))
 			return error(_("--mirror and --tags are incompatible"));
 		return error(_("--mirror can't be combined with refspecs"));
 	}

 	if ((flags & (TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) ==
 				(TRANSPORT_PUSH_ALL|TRANSPORT_PUSH_MIRROR)) {
 		return error(_("--all and --mirror are incompatible"));
 	}

 	if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
 		if (remote->push_refspec_nr) {
 			refspec = remote->push_refspec;
 			refspec_nr = remote->push_refspec_nr;
 		} else if (!(flags & TRANSPORT_PUSH_MIRROR))
 			setup_default_push_refspecs(remote);
 	}
 	errs = 0;
 	if (remote->pushurl_nr) {
 		url = remote->pushurl;
 		url_nr = remote->pushurl_nr;
 	} else {
 		url = remote->url;
 		url_nr = remote->url_nr;
 	}
 	if (url_nr) {
 		for (i = 0; i < url_nr; i++) {
 			struct transport *transport =
 				transport_get(remote, url[i]);
 			if (push_with_options(transport, flags))
 				errs++;
 		}
 	} else {
 		struct transport *transport =
 			transport_get(remote, NULL);

 		if (push_with_options(transport, flags))
 			errs++;
 	}
 	return !!errs;
 }

 int cmd_push(int argc, const char **argv, const char *prefix)
 {
 	int flags = 0;
 	int tags = 0;
 	int rc;
 	const char *repo = NULL;	/* default repository */
 	struct option options[] = {
 		OPT__VERBOSITY(&verbosity),
 		OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
 		OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
 		OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
 			    (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
 		OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
 		OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
 		OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
 		OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
 		OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
 		OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
 		OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
 		OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
 		OPT_BIT('u', "set-upstream", &flags, "set upstream for git pull/status",
 			TRANSPORT_PUSH_SET_UPSTREAM),
 		OPT_BOOLEAN(0, "progress", &progress, "force progress reporting"),
 		OPT_END()
 	};

 	packet_trace_identity("push");
 	git_config(git_default_config, NULL);
 	argc = parse_options(argc, argv, prefix, options, push_usage, 0);

 	if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
 		die(_("--delete is incompatible with --all, --mirror and --tags"));
 	if (deleterefs && argc < 2)
 		die(_("--delete doesn't make sense without any refs"));

 	if (tags)
 		add_refspec("refs/tags/*");

 	if (argc > 0) {
 		repo = argv[0];
 		set_refspecs(argv + 1, argc - 1);
 	}

 	rc = do_push(repo, flags);
 	if (rc == -1)
 		usage_with_options(push_usage, options);
 	else
 		return rc;
 }
	/*
	* "git push"
	*/
	#include "cache.h"
	#include "refs.h"
	#include "run-command.h"
	#include "builtin.h"
	#include "remote.h"
	#include "transport.h"
	#include "parse-options.h"

	static const char * const push_usage[] = {
	"git push [<options>] [<repository> [<refspec>...]]",
	NULL,
	};

	static int thin;
	static int deleterefs;
	static const char *receivepack;
	static int verbosity;
	static int progress;

	static const char **refspec;
	static int refspec_nr;
	static int refspec_alloc;

	static void add_refspec(const char *ref)
	{
	refspec_nr++;
	ALLOC_GROW(refspec, refspec_nr, refspec_alloc);
	refspec[refspec_nr-1] = ref;
	}

	static void set_refspecs(const char **refs, int nr)
	{
	int i;
	for (i = 0; i < nr; i++) {
	const char *ref = refs[i];
	if (!strcmp("tag", ref)) {
	char *tag;
	int len;
	if (nr <= ++i)
	die(_("tag shorthand without <tag>"));
	len = strlen(refs[i]) + 11;
	if (deleterefs) {
	tag = xmalloc(len+1);
	strcpy(tag, ":refs/tags/");
	} else {
	tag = xmalloc(len);
	strcpy(tag, "refs/tags/");
	}
	strcat(tag, refs[i]);
	ref = tag;
	} else if (deleterefs && !strchr(ref, ':')) {
	char *delref;
	int len = strlen(ref)+1;
	delref = xmalloc(len+1);
	strcpy(delref, ":");
	strcat(delref, ref);
	ref = delref;
	} else if (deleterefs)
	die(_("--delete only accepts plain target ref names"));
	add_refspec(ref);
	}
	}

	static void setup_push_upstream(struct remote *remote)
	{
	struct strbuf refspec = STRBUF_INIT;
	struct branch *branch = branch_get(NULL);
	if (!branch)
	die(_("You are not currently on a branch.\n"
	"To push the history leading to the current (detached HEAD)\n"
	"state now, use\n"
	"\n"
	" git push %s HEAD:<name-of-remote-branch>\n"),
	remote->name);
	if (!branch->merge_nr \|\| !branch->merge)
	die(_("The current branch %s has no upstream branch.\n"
	"To push the current branch and set the remote as upstream, use\n"
	"\n"
	" git push --set-upstream %s %s\n"),
	branch->name,
	remote->name,
	branch->name);
	if (branch->merge_nr != 1)
	die(_("The current branch %s has multiple upstream branches, "
	"refusing to push."), branch->name);
	strbuf_addf(&refspec, "%s:%s", branch->name, branch->merge[0]->src);
	add_refspec(refspec.buf);
	}

	static void setup_default_push_refspecs(struct remote *remote)
	{
	switch (push_default) {
	default:
	case PUSH_DEFAULT_MATCHING:
	add_refspec(":");
	break;

	case PUSH_DEFAULT_UPSTREAM:
	setup_push_upstream(remote);
	break;

	case PUSH_DEFAULT_CURRENT:
	add_refspec("HEAD");
	break;

	case PUSH_DEFAULT_NOTHING:
	die(_("You didn't specify any refspecs to push, and "
	"push.default is \"nothing\"."));
	break;
	}
	}

	static int push_with_options(struct transport *transport, int flags)
	{
	int err;
	int nonfastforward;

	transport_set_verbosity(transport, verbosity, progress);

	if (receivepack)
	transport_set_option(transport,
	TRANS_OPT_RECEIVEPACK, receivepack);
	if (thin)
	transport_set_option(transport, TRANS_OPT_THIN, "yes");

	if (verbosity > 0)
	fprintf(stderr, _("Pushing to %s\n"), transport->url);
	err = transport_push(transport, refspec_nr, refspec, flags,
	&nonfastforward);
	if (err != 0)
	error(_("failed to push some refs to '%s'"), transport->url);

	err \|= transport_disconnect(transport);

	if (!err)
	return 0;

	if (nonfastforward && advice_push_nonfastforward) {
	fprintf(stderr, _("To prevent you from losing history, non-fast-forward updates were rejected\n"
	"Merge the remote changes (e.g. 'git pull') before pushing again. See the\n"
	"'Note about fast-forwards' section of 'git push --help' for details.\n"));
	}

	return 1;
	}

	static int do_push(const char *repo, int flags)
	{
	int i, errs;
	struct remote *remote = remote_get(repo);
	const char **url;
	int url_nr;

	if (!remote) {
	if (repo)
	die(_("bad repository '%s'"), repo);
	die(_("No configured push destination.\n"
	"Either specify the URL from the command-line or configure a remote repository using\n"
	"\n"
	" git remote add <name> <url>\n"
	"\n"
	"and then push using the remote name\n"
	"\n"
	" git push <name>\n"));
	}

	if (remote->mirror)
	flags \|= (TRANSPORT_PUSH_MIRROR\|TRANSPORT_PUSH_FORCE);

	if ((flags & TRANSPORT_PUSH_ALL) && refspec) {
	if (!strcmp(refspec, "refs/tags/"))
	return error(_("--all and --tags are incompatible"));
	return error(_("--all can't be combined with refspecs"));
	}

	if ((flags & TRANSPORT_PUSH_MIRROR) && refspec) {
	if (!strcmp(refspec, "refs/tags/"))
	return error(_("--mirror and --tags are incompatible"));
	return error(_("--mirror can't be combined with refspecs"));
	}

	if ((flags & (TRANSPORT_PUSH_ALL\|TRANSPORT_PUSH_MIRROR)) ==
	(TRANSPORT_PUSH_ALL\|TRANSPORT_PUSH_MIRROR)) {
	return error(_("--all and --mirror are incompatible"));
	}

	if (!refspec && !(flags & TRANSPORT_PUSH_ALL)) {
	if (remote->push_refspec_nr) {
	refspec = remote->push_refspec;
	refspec_nr = remote->push_refspec_nr;
	} else if (!(flags & TRANSPORT_PUSH_MIRROR))
	setup_default_push_refspecs(remote);
	}
	errs = 0;
	if (remote->pushurl_nr) {
	url = remote->pushurl;
	url_nr = remote->pushurl_nr;
	} else {
	url = remote->url;
	url_nr = remote->url_nr;
	}
	if (url_nr) {
	for (i = 0; i < url_nr; i++) {
	struct transport *transport =
	transport_get(remote, url[i]);
	if (push_with_options(transport, flags))
	errs++;
	}
	} else {
	struct transport *transport =
	transport_get(remote, NULL);

	if (push_with_options(transport, flags))
	errs++;
	}
	return !!errs;
	}

	int cmd_push(int argc, const char *argv, const char prefix)
	{
	int flags = 0;
	int tags = 0;
	int rc;
	const char repo = NULL; / default repository */
	struct option options[] = {
	OPT__VERBOSITY(&verbosity),
	OPT_STRING( 0 , "repo", &repo, "repository", "repository"),
	OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
	OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
	(TRANSPORT_PUSH_MIRROR\|TRANSPORT_PUSH_FORCE)),
	OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
	OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
	OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
	OPT_BIT( 0, "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
	OPT_BIT('f', "force", &flags, "force updates", TRANSPORT_PUSH_FORCE),
	OPT_BOOLEAN( 0 , "thin", &thin, "use thin pack"),
	OPT_STRING( 0 , "receive-pack", &receivepack, "receive-pack", "receive pack program"),
	OPT_STRING( 0 , "exec", &receivepack, "receive-pack", "receive pack program"),
	OPT_BIT('u', "set-upstream", &flags, "set upstream for git pull/status",
	TRANSPORT_PUSH_SET_UPSTREAM),
	OPT_BOOLEAN(0, "progress", &progress, "force progress reporting"),
	OPT_END()
	};

	packet_trace_identity("push");
	git_config(git_default_config, NULL);
	argc = parse_options(argc, argv, prefix, options, push_usage, 0);

	if (deleterefs && (tags \|\| (flags & (TRANSPORT_PUSH_ALL \| TRANSPORT_PUSH_MIRROR))))
	die(_("--delete is incompatible with --all, --mirror and --tags"));
	if (deleterefs && argc < 2)
	die(_("--delete doesn't make sense without any refs"));

	if (tags)
	add_refspec("refs/tags/*");

	if (argc > 0) {
	repo = argv[0];
	set_refspecs(argv + 1, argc - 1);
	}

	rc = do_push(repo, flags);
	if (rc == -1)
	usage_with_options(push_usage, options);
	else
	return rc;
	}