X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=branch.c;h=9c9dae1eae321c6878607a3b624a187fcb176380;hb=a78305ffbca58e49a7cdad901df0ae779bbed8fb;hp=660097bc29a682c4481308ba245e5e02f0661681;hpb=98e3d8faf9eebd382f62a75c886b7e1c6a20279b;p=platform%2Fupstream%2Fgit.git

diff --git a/branch.c b/branch.c
index 660097b..9c9dae1 100644
--- a/branch.c
+++ b/branch.c
@@ -1,12 +1,16 @@
 #include "git-compat-util.h"
 #include "cache.h"
+#include "config.h"
 #include "branch.h"
 #include "refs.h"
+#include "refspec.h"
 #include "remote.h"
+#include "sequencer.h"
 #include "commit.h"
+#include "worktree.h"
 
 struct tracking {
-	struct refspec spec;
+	struct refspec_item spec;
 	char *src;
 	const char *remote;
 	int matches;
@@ -22,10 +26,7 @@ static int find_tracked_branch(struct remote *remote, void *priv)
 			tracking->remote = remote->name;
 		} else {
 			free(tracking->spec.src);
-			if (tracking->src) {
-				free(tracking->src);
-				tracking->src = NULL;
-			}
+			FREE_AND_NULL(tracking->src);
 		}
 		tracking->spec.src = NULL;
 	}
@@ -48,31 +49,40 @@ static int should_setup_rebase(const char *origin)
 	return 0;
 }
 
-void install_branch_config(int flag, const char *local, const char *origin, const char *remote)
+static const char tracking_advice[] =
+N_("\n"
+"After fixing the error cause you may try to fix up\n"
+"the remote tracking information by invoking\n"
+"\"git branch --set-upstream-to=%s%s%s\".");
+
+int install_branch_config(int flag, const char *local, const char *origin, const char *remote)
 {
-	const char *shortname = skip_prefix(remote, "refs/heads/");
+	const char *shortname = NULL;
 	struct strbuf key = STRBUF_INIT;
 	int rebasing = should_setup_rebase(origin);
 
-	if (shortname
+	if (skip_prefix(remote, "refs/heads/", &shortname)
 	    && !strcmp(local, shortname)
 	    && !origin) {
 		warning(_("Not setting branch %s as its own upstream."),
 			local);
-		return;
+		return 0;
 	}
 
 	strbuf_addf(&key, "branch.%s.remote", local);
-	git_config_set(key.buf, origin ? origin : ".");
+	if (git_config_set_gently(key.buf, origin ? origin : ".") < 0)
+		goto out_err;
 
 	strbuf_reset(&key);
 	strbuf_addf(&key, "branch.%s.merge", local);
-	git_config_set(key.buf, remote);
+	if (git_config_set_gently(key.buf, remote) < 0)
+		goto out_err;
 
 	if (rebasing) {
 		strbuf_reset(&key);
 		strbuf_addf(&key, "branch.%s.rebase", local);
-		git_config_set(key.buf, "true");
+		if (git_config_set_gently(key.buf, "true") < 0)
+			goto out_err;
 	}
 	strbuf_release(&key);
 
@@ -80,27 +90,40 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
 		if (shortname) {
 			if (origin)
 				printf_ln(rebasing ?
-					  _("Branch %s set up to track remote branch %s from %s by rebasing.") :
-					  _("Branch %s set up to track remote branch %s from %s."),
+					  _("Branch '%s' set up to track remote branch '%s' from '%s' by rebasing.") :
+					  _("Branch '%s' set up to track remote branch '%s' from '%s'."),
 					  local, shortname, origin);
 			else
 				printf_ln(rebasing ?
-					  _("Branch %s set up to track local branch %s by rebasing.") :
-					  _("Branch %s set up to track local branch %s."),
+					  _("Branch '%s' set up to track local branch '%s' by rebasing.") :
+					  _("Branch '%s' set up to track local branch '%s'."),
 					  local, shortname);
 		} else {
 			if (origin)
 				printf_ln(rebasing ?
-					  _("Branch %s set up to track remote ref %s by rebasing.") :
-					  _("Branch %s set up to track remote ref %s."),
+					  _("Branch '%s' set up to track remote ref '%s' by rebasing.") :
+					  _("Branch '%s' set up to track remote ref '%s'."),
 					  local, remote);
 			else
 				printf_ln(rebasing ?
-					  _("Branch %s set up to track local ref %s by rebasing.") :
-					  _("Branch %s set up to track local ref %s."),
+					  _("Branch '%s' set up to track local ref '%s' by rebasing.") :
+					  _("Branch '%s' set up to track local ref '%s'."),
 					  local, remote);
 		}
 	}
+
+	return 0;
+
+out_err:
+	strbuf_release(&key);
+	error(_("Unable to write upstream branch configuration"));
+
+	advise(_(tracking_advice),
+	       origin ? origin : "",
+	       origin ? "/" : "",
+	       shortname ? shortname : remote);
+
+	return -1;
 }
 
 /*
@@ -108,8 +131,8 @@ void install_branch_config(int flag, const char *local, const char *origin, cons
  * to infer the settings for branch.<new_ref>.{remote,merge} from the
  * config.
  */
-static int setup_tracking(const char *new_ref, const char *orig_ref,
-			  enum branch_track track, int quiet)
+static void setup_tracking(const char *new_ref, const char *orig_ref,
+			   enum branch_track track, int quiet)
 {
 	struct tracking tracking;
 	int config_flags = quiet ? 0 : BRANCH_CONFIG_VERBOSE;
@@ -117,7 +140,7 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
 	memset(&tracking, 0, sizeof(tracking));
 	tracking.spec.dst = (char *)orig_ref;
 	if (for_each_remote(find_tracked_branch, &tracking))
-		return 1;
+		return;
 
 	if (!tracking.matches)
 		switch (track) {
@@ -126,78 +149,77 @@ static int setup_tracking(const char *new_ref, const char *orig_ref,
 		case BRANCH_TRACK_OVERRIDE:
 			break;
 		default:
-			return 1;
+			return;
 		}
 
 	if (tracking.matches > 1)
-		return error(_("Not tracking: ambiguous information for ref %s"),
-				orig_ref);
+		die(_("Not tracking: ambiguous information for ref %s"),
+		    orig_ref);
 
-	install_branch_config(config_flags, new_ref, tracking.remote,
-			      tracking.src ? tracking.src : orig_ref);
+	if (install_branch_config(config_flags, new_ref, tracking.remote,
+			      tracking.src ? tracking.src : orig_ref) < 0)
+		exit(-1);
 
 	free(tracking.src);
-	return 0;
-}
-
-struct branch_desc_cb {
-	const char *config_name;
-	const char *value;
-};
-
-static int read_branch_desc_cb(const char *var, const char *value, void *cb)
-{
-	struct branch_desc_cb *desc = cb;
-	if (strcmp(desc->config_name, var))
-		return 0;
-	free((char *)desc->value);
-	return git_config_string(&desc->value, var, value);
 }
 
 int read_branch_desc(struct strbuf *buf, const char *branch_name)
 {
-	struct branch_desc_cb cb;
+	char *v = NULL;
 	struct strbuf name = STRBUF_INIT;
 	strbuf_addf(&name, "branch.%s.description", branch_name);
-	cb.config_name = name.buf;
-	cb.value = NULL;
-	if (git_config(read_branch_desc_cb, &cb) < 0) {
+	if (git_config_get_string(name.buf, &v)) {
 		strbuf_release(&name);
 		return -1;
 	}
-	if (cb.value)
-		strbuf_addstr(buf, cb.value);
+	strbuf_addstr(buf, v);
+	free(v);
 	strbuf_release(&name);
 	return 0;
 }
 
-int validate_new_branchname(const char *name, struct strbuf *ref,
-			    int force, int attr_only)
+/*
+ * Check if 'name' can be a valid name for a branch; die otherwise.
+ * Return 1 if the named branch already exists; return 0 otherwise.
+ * Fill ref with the full refname for the branch.
+ */
+int validate_branchname(const char *name, struct strbuf *ref)
 {
 	if (strbuf_check_branch_ref(ref, name))
 		die(_("'%s' is not a valid branch name."), name);
 
-	if (!ref_exists(ref->buf))
+	return ref_exists(ref->buf);
+}
+
+/*
+ * Check if a branch 'name' can be created as a new branch; die otherwise.
+ * 'force' can be used when it is OK for the named branch already exists.
+ * Return 1 if the named branch already exists; return 0 otherwise.
+ * Fill ref with the full refname for the branch.
+ */
+int validate_new_branchname(const char *name, struct strbuf *ref, int force)
+{
+	const char *head;
+
+	if (!validate_branchname(name, ref))
 		return 0;
-	else if (!force && !attr_only)
-		die(_("A branch named '%s' already exists."), ref->buf + strlen("refs/heads/"));
 
-	if (!attr_only) {
-		const char *head;
-		unsigned char sha1[20];
+	if (!force)
+		die(_("A branch named '%s' already exists."),
+		    ref->buf + strlen("refs/heads/"));
+
+	head = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
+	if (!is_bare_repository() && head && !strcmp(head, ref->buf))
+		die(_("Cannot force update the current branch."));
 
-		head = resolve_ref_unsafe("HEAD", sha1, 0, NULL);
-		if (!is_bare_repository() && head && !strcmp(head, ref->buf))
-			die(_("Cannot force update the current branch."));
-	}
 	return 1;
 }
 
 static int check_tracking_branch(struct remote *remote, void *cb_data)
 {
 	char *tracking_branch = cb_data;
-	struct refspec query;
-	memset(&query, 0, sizeof(struct refspec));
+	struct refspec_item query;
+	memset(&query, 0, sizeof(struct refspec_item));
 	query.dst = tracking_branch;
 	return !remote_find_tracking(remote, &query);
 }
@@ -221,15 +243,14 @@ N_("\n"
 "will track its remote counterpart, you may want to use\n"
 "\"git push -u\" to set the upstream config as you push.");
 
-void create_branch(const char *head,
+void create_branch(struct repository *r,
 		   const char *name, const char *start_name,
-		   int force, int reflog, int clobber_head,
+		   int force, int clobber_head_ok, int reflog,
 		   int quiet, enum branch_track track)
 {
-	struct ref_lock *lock = NULL;
 	struct commit *commit;
-	unsigned char sha1[20];
-	char *real_ref, msg[PATH_MAX + 20];
+	struct object_id oid;
+	char *real_ref;
 	struct strbuf ref = STRBUF_INIT;
 	int forcing = 0;
 	int dont_change_ref = 0;
@@ -238,9 +259,9 @@ void create_branch(const char *head,
 	if (track == BRANCH_TRACK_EXPLICIT || track == BRANCH_TRACK_OVERRIDE)
 		explicit_tracking = 1;
 
-	if (validate_new_branchname(name, &ref, force,
-				    track == BRANCH_TRACK_OVERRIDE ||
-				    clobber_head)) {
+	if ((track == BRANCH_TRACK_OVERRIDE || clobber_head_ok)
+	    ? validate_branchname(name, &ref)
+	    : validate_new_branchname(name, &ref, force)) {
 		if (!force)
 			dont_change_ref = 1;
 		else
@@ -248,7 +269,7 @@ void create_branch(const char *head,
 	}
 
 	real_ref = NULL;
-	if (get_sha1(start_name, sha1)) {
+	if (get_oid_mb(start_name, &oid)) {
 		if (explicit_tracking) {
 			if (advice_set_upstream_failure) {
 				error(_(upstream_missing), start_name);
@@ -260,7 +281,7 @@ void create_branch(const char *head,
 		die(_("Not a valid object name: '%s'."), start_name);
 	}
 
-	switch (dwim_ref(start_name, strlen(start_name), sha1, &real_ref)) {
+	switch (dwim_ref(start_name, strlen(start_name), &oid, &real_ref, 0)) {
 	case 0:
 		/* Not branching from any existing branch */
 		if (explicit_tracking)
@@ -281,44 +302,93 @@ void create_branch(const char *head,
 		break;
 	}
 
-	if ((commit = lookup_commit_reference(sha1)) == NULL)
+	if ((commit = lookup_commit_reference(r, &oid)) == NULL)
 		die(_("Not a valid branch point: '%s'."), start_name);
-	hashcpy(sha1, commit->object.sha1);
-
-	if (!dont_change_ref) {
-		lock = lock_any_ref_for_update(ref.buf, NULL, 0, NULL);
-		if (!lock)
-			die_errno(_("Failed to lock ref for update"));
-	}
+	oidcpy(&oid, &commit->object.oid);
 
 	if (reflog)
-		log_all_ref_updates = 1;
+		log_all_ref_updates = LOG_REFS_NORMAL;
 
-	if (forcing)
-		snprintf(msg, sizeof msg, "branch: Reset to %s",
-			 start_name);
-	else if (!dont_change_ref)
-		snprintf(msg, sizeof msg, "branch: Created from %s",
-			 start_name);
+	if (!dont_change_ref) {
+		struct ref_transaction *transaction;
+		struct strbuf err = STRBUF_INIT;
+		char *msg;
+
+		if (forcing)
+			msg = xstrfmt("branch: Reset to %s", start_name);
+		else
+			msg = xstrfmt("branch: Created from %s", start_name);
+
+		transaction = ref_transaction_begin(&err);
+		if (!transaction ||
+		    ref_transaction_update(transaction, ref.buf,
+					   &oid, forcing ? NULL : &null_oid,
+					   0, msg, &err) ||
+		    ref_transaction_commit(transaction, &err))
+			die("%s", err.buf);
+		ref_transaction_free(transaction);
+		strbuf_release(&err);
+		free(msg);
+	}
 
 	if (real_ref && track)
 		setup_tracking(ref.buf + 11, real_ref, track, quiet);
 
-	if (!dont_change_ref)
-		if (write_ref_sha1(lock, sha1, msg) < 0)
-			die_errno(_("Failed to write ref"));
-
 	strbuf_release(&ref);
 	free(real_ref);
 }
 
-void remove_branch_state(void)
+void remove_merge_branch_state(struct repository *r)
 {
-	unlink(git_path("CHERRY_PICK_HEAD"));
-	unlink(git_path("REVERT_HEAD"));
-	unlink(git_path("MERGE_HEAD"));
-	unlink(git_path("MERGE_RR"));
-	unlink(git_path("MERGE_MSG"));
-	unlink(git_path("MERGE_MODE"));
-	unlink(git_path("SQUASH_MSG"));
+	unlink(git_path_merge_head(r));
+	unlink(git_path_merge_rr(r));
+	unlink(git_path_merge_msg(r));
+	unlink(git_path_merge_mode(r));
+	save_autostash(git_path_merge_autostash(r));
+}
+
+void remove_branch_state(struct repository *r, int verbose)
+{
+	sequencer_post_commit_cleanup(r, verbose);
+	unlink(git_path_squash_msg(r));
+	remove_merge_branch_state(r);
+}
+
+void die_if_checked_out(const char *branch, int ignore_current_worktree)
+{
+	const struct worktree *wt;
+
+	wt = find_shared_symref("HEAD", branch);
+	if (!wt || (ignore_current_worktree && wt->is_current))
+		return;
+	skip_prefix(branch, "refs/heads/", &branch);
+	die(_("'%s' is already checked out at '%s'"),
+	    branch, wt->path);
+}
+
+int replace_each_worktree_head_symref(const char *oldref, const char *newref,
+				      const char *logmsg)
+{
+	int ret = 0;
+	struct worktree **worktrees = get_worktrees();
+	int i;
+
+	for (i = 0; worktrees[i]; i++) {
+		struct ref_store *refs;
+
+		if (worktrees[i]->is_detached)
+			continue;
+		if (!worktrees[i]->head_ref)
+			continue;
+		if (strcmp(oldref, worktrees[i]->head_ref))
+			continue;
+
+		refs = get_worktree_ref_store(worktrees[i]);
+		if (refs_create_symref(refs, "HEAD", newref, logmsg))
+			ret = error(_("HEAD of working tree %s is not updated"),
+				    worktrees[i]->path);
+	}
+
+	free_worktrees(worktrees);
+	return ret;
 }