Imported Upstream version 2.17.0
[platform/upstream/git.git] / builtin / branch.c
index 16d391b..6d0cea9 100644 (file)
@@ -28,6 +28,7 @@ static const char * const builtin_branch_usage[] = {
        N_("git branch [<options>] [-l] [-f] <branch-name> [<start-point>]"),
        N_("git branch [<options>] [-r] (-d | -D) <branch-name>..."),
        N_("git branch [<options>] (-m | -M) [<old-branch>] <new-branch>"),
+       N_("git branch [<options>] (-c | -C) [<old-branch>] <new-branch>"),
        N_("git branch [<options>] [-r | -a] [--points-at]"),
        N_("git branch [<options>] [-r | -a] [--format]"),
        NULL
@@ -92,7 +93,7 @@ static int git_branch_config(const char *var, const char *value, void *cb)
                        return config_error_nonbool(var);
                return color_parse(value, branch_colors[slot]);
        }
-       return git_default_config(var, value, cb);
+       return git_color_default_config(var, value, cb);
 }
 
 static const char *branch_get_color(enum color_branch ix)
@@ -124,7 +125,7 @@ static int branch_merged(int kind, const char *name,
                if (upstream &&
                    (reference_name = reference_name_to_free =
                     resolve_refdup(upstream, RESOLVE_REF_READING,
-                                   oid.hash, NULL)) != NULL)
+                                   &oid, NULL)) != NULL)
                        reference_rev = lookup_commit_reference(&oid);
        }
        if (!reference_rev)
@@ -216,7 +217,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                if (!head_rev)
                        die(_("Couldn't look up commit object for HEAD"));
        }
-       for (i = 0; i < argc; i++, strbuf_release(&bname)) {
+       for (i = 0; i < argc; i++, strbuf_reset(&bname)) {
                char *target = NULL;
                int flags = 0;
 
@@ -240,7 +241,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                                        RESOLVE_REF_READING
                                        | RESOLVE_REF_NO_RECURSE
                                        | RESOLVE_REF_ALLOW_BAD_NAME,
-                                       oid.hash, &flags);
+                                       &oid, &flags);
                if (!target) {
                        error(remote_branch
                              ? _("remote-tracking branch '%s' not found.")
@@ -256,8 +257,8 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                        goto next;
                }
 
-               if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : oid.hash,
-                              REF_NODEREF)) {
+               if (delete_ref(NULL, name, is_null_oid(&oid) ? NULL : &oid,
+                              REF_NO_DEREF)) {
                        error(remote_branch
                              ? _("Error deleting remote-tracking branch '%s'")
                              : _("Error deleting branch '%s'"),
@@ -281,8 +282,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
        }
 
        free(name);
+       strbuf_release(&bname);
 
-       return(ret);
+       return ret;
 }
 
 static int calc_maxwidth(struct ref_array *refs, int remote_bonus)
@@ -352,7 +354,7 @@ static char *build_format(struct ref_filter *filter, int maxwidth, const char *r
                        strbuf_addf(&obname, "%%(objectname:short=%d)", filter->abbrev);
 
                strbuf_addf(&local, "%%(align:%d,left)%%(refname:lstrip=2)%%(end)", maxwidth);
-               strbuf_addf(&local, "%s", branch_get_color(BRANCH_COLOR_RESET));
+               strbuf_addstr(&local, branch_get_color(BRANCH_COLOR_RESET));
                strbuf_addf(&local, " %s ", obname.buf);
 
                if (filter->verbose > 1)
@@ -456,15 +458,20 @@ static void reject_rebase_or_bisect_branch(const char *target)
        free_worktrees(worktrees);
 }
 
-static void rename_branch(const char *oldname, const char *newname, int force)
+static void copy_or_rename_branch(const char *oldname, const char *newname, int copy, int force)
 {
        struct strbuf oldref = STRBUF_INIT, newref = STRBUF_INIT, logmsg = STRBUF_INIT;
        struct strbuf oldsection = STRBUF_INIT, newsection = STRBUF_INIT;
+       const char *interpreted_oldname = NULL;
+       const char *interpreted_newname = NULL;
        int recovery = 0;
-       int clobber_head_ok;
 
-       if (!oldname)
-               die(_("cannot rename the current branch while not on any."));
+       if (!oldname) {
+               if (copy)
+                       die(_("cannot copy the current branch while not on any."));
+               else
+                       die(_("cannot rename the current branch while not on any."));
+       }
 
        if (strbuf_check_branch_ref(&oldref, oldname)) {
                /*
@@ -481,32 +488,53 @@ static void rename_branch(const char *oldname, const char *newname, int force)
         * A command like "git branch -M currentbranch currentbranch" cannot
         * cause the worktree to become inconsistent with HEAD, so allow it.
         */
-       clobber_head_ok = !strcmp(oldname, newname);
-
-       validate_new_branchname(newname, &newref, force, clobber_head_ok);
+       if (!strcmp(oldname, newname))
+               validate_branchname(newname, &newref);
+       else
+               validate_new_branchname(newname, &newref, force);
 
        reject_rebase_or_bisect_branch(oldref.buf);
 
-       strbuf_addf(&logmsg, "Branch: renamed %s to %s",
-                oldref.buf, newref.buf);
+       if (!skip_prefix(oldref.buf, "refs/heads/", &interpreted_oldname) ||
+           !skip_prefix(newref.buf, "refs/heads/", &interpreted_newname)) {
+               die("BUG: expected prefix missing for refs");
+       }
+
+       if (copy)
+               strbuf_addf(&logmsg, "Branch: copied %s to %s",
+                           oldref.buf, newref.buf);
+       else
+               strbuf_addf(&logmsg, "Branch: renamed %s to %s",
+                           oldref.buf, newref.buf);
 
-       if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
+       if (!copy && rename_ref(oldref.buf, newref.buf, logmsg.buf))
                die(_("Branch rename failed"));
+       if (copy && copy_existing_ref(oldref.buf, newref.buf, logmsg.buf))
+               die(_("Branch copy failed"));
 
-       if (recovery)
-               warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
+       if (recovery) {
+               if (copy)
+                       warning(_("Created a copy of a misnamed branch '%s'"),
+                               interpreted_oldname);
+               else
+                       warning(_("Renamed a misnamed branch '%s' away"),
+                               interpreted_oldname);
+       }
 
-       if (replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
+       if (!copy &&
+           replace_each_worktree_head_symref(oldref.buf, newref.buf, logmsg.buf))
                die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
 
        strbuf_release(&logmsg);
 
-       strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
+       strbuf_addf(&oldsection, "branch.%s", interpreted_oldname);
        strbuf_release(&oldref);
-       strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
+       strbuf_addf(&newsection, "branch.%s", interpreted_newname);
        strbuf_release(&newref);
-       if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
+       if (!copy && git_config_rename_section(oldsection.buf, newsection.buf) < 0)
                die(_("Branch is renamed, but update of config-file failed"));
+       if (copy && strcmp(oldname, newname) && git_config_copy_section(oldsection.buf, newsection.buf) < 0)
+               die(_("Branch is copied, but update of config-file failed"));
        strbuf_release(&oldsection);
        strbuf_release(&newsection);
 }
@@ -544,7 +572,7 @@ static int edit_branch_description(const char *branch_name)
 
 int cmd_branch(int argc, const char **argv, const char *prefix)
 {
-       int delete = 0, rename = 0, force = 0, list = 0;
+       int delete = 0, rename = 0, copy = 0, force = 0, list = 0;
        int reflog = 0, edit_description = 0;
        int quiet = 0, unset_upstream = 0;
        const char *new_upstream = NULL;
@@ -561,8 +589,8 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT__QUIET(&quiet, N_("suppress informational messages")),
                OPT_SET_INT('t', "track",  &track, N_("set up tracking mode (see git-pull(1))"),
                        BRANCH_TRACK_EXPLICIT),
-               OPT_SET_INT( 0, "set-upstream",  &track, N_("change upstream info"),
-                       BRANCH_TRACK_OVERRIDE),
+               { OPTION_SET_INT, 0, "set-upstream", &track, NULL, N_("do not use"),
+                       PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, BRANCH_TRACK_OVERRIDE },
                OPT_STRING('u', "set-upstream-to", &new_upstream, N_("upstream"), N_("change the upstream info")),
                OPT_BOOL(0, "unset-upstream", &unset_upstream, N_("Unset the upstream info")),
                OPT__COLOR(&branch_use_color, N_("use colored output")),
@@ -581,11 +609,13 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                OPT_BIT('D', NULL, &delete, N_("delete branch (even if not merged)"), 2),
                OPT_BIT('m', "move", &rename, N_("move/rename a branch and its reflog"), 1),
                OPT_BIT('M', NULL, &rename, N_("move/rename a branch, even if target exists"), 2),
+               OPT_BIT('c', "copy", &copy, N_("copy a branch and its reflog"), 1),
+               OPT_BIT('C', NULL, &copy, N_("copy a branch, even if target exists"), 2),
                OPT_BOOL(0, "list", &list, N_("list branch names")),
                OPT_BOOL('l', "create-reflog", &reflog, N_("create the branch's reflog")),
                OPT_BOOL(0, "edit-description", &edit_description,
                         N_("edit the description for the branch")),
-               OPT__FORCE(&force, N_("force creation, move/rename, deletion")),
+               OPT__FORCE(&force, N_("force creation, move/rename, deletion"), PARSE_OPT_NOCOMPLETE),
                OPT_MERGED(&filter, N_("print only branches that are merged")),
                OPT_NO_MERGED(&filter, N_("print only branches that are not merged")),
                OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
@@ -613,7 +643,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
        track = git_branch_track;
 
-       head = resolve_refdup("HEAD", 0, head_oid.hash, NULL);
+       head = resolve_refdup("HEAD", 0, &head_oid, NULL);
        if (!head)
                die(_("Failed to resolve HEAD as a valid ref."));
        if (!strcmp(head, "HEAD"))
@@ -624,14 +654,14 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
                             0);
 
-       if (!delete && !rename && !edit_description && !new_upstream && !unset_upstream && argc == 0)
+       if (!delete && !rename && !copy && !edit_description && !new_upstream && !unset_upstream && argc == 0)
                list = 1;
 
        if (filter.with_commit || filter.merge != REF_FILTER_MERGED_NONE || filter.points_at.nr ||
            filter.no_commit)
                list = 1;
 
-       if (!!delete + !!rename + !!new_upstream +
+       if (!!delete + !!rename + !!copy + !!new_upstream +
            list + unset_upstream > 1)
                usage_with_options(builtin_branch_usage, options);
 
@@ -649,8 +679,12 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        if (force) {
                delete *= 2;
                rename *= 2;
+               copy *= 2;
        }
 
+       if (list)
+               setup_auto_pager("branch", 1);
+
        if (delete) {
                if (!argc)
                        die(_("branch name required"));
@@ -703,20 +737,29 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
                if (edit_branch_description(branch_name))
                        return 1;
+       } else if (copy) {
+               if (!argc)
+                       die(_("branch name required"));
+               else if (argc == 1)
+                       copy_or_rename_branch(head, argv[0], 1, copy > 1);
+               else if (argc == 2)
+                       copy_or_rename_branch(argv[0], argv[1], 1, copy > 1);
+               else
+                       die(_("too many branches for a copy operation"));
        } else if (rename) {
                if (!argc)
                        die(_("branch name required"));
                else if (argc == 1)
-                       rename_branch(head, argv[0], rename > 1);
+                       copy_or_rename_branch(head, argv[0], 0, rename > 1);
                else if (argc == 2)
-                       rename_branch(argv[0], argv[1], rename > 1);
+                       copy_or_rename_branch(argv[0], argv[1], 0, rename > 1);
                else
-                       die(_("too many branches for a rename operation"));
+                       die(_("too many arguments for a rename operation"));
        } else if (new_upstream) {
                struct branch *branch = branch_get(argv[0]);
 
                if (argc > 1)
-                       die(_("too many branches to set new upstream"));
+                       die(_("too many arguments to set new upstream"));
 
                if (!branch) {
                        if (!argc || !strcmp(argv[0], "HEAD"))
@@ -739,7 +782,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                struct strbuf buf = STRBUF_INIT;
 
                if (argc > 1)
-                       die(_("too many branches to unset upstream"));
+                       die(_("too many arguments to unset upstream"));
 
                if (!branch) {
                        if (!argc || !strcmp(argv[0], "HEAD"))
@@ -759,11 +802,6 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                strbuf_release(&buf);
        } else if (argc > 0 && argc <= 2) {
                struct branch *branch = branch_get(argv[0]);
-               int branch_existed = 0, remote_tracking = 0;
-               struct strbuf buf = STRBUF_INIT;
-
-               if (!strcmp(argv[0], "HEAD"))
-                       die(_("it does not make sense to create 'HEAD' manually"));
 
                if (!branch)
                        die(_("no such branch '%s'"), argv[0]);
@@ -772,27 +810,10 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                        die(_("-a and -r options to 'git branch' do not make sense with a branch name"));
 
                if (track == BRANCH_TRACK_OVERRIDE)
-                       fprintf(stderr, _("The --set-upstream flag is deprecated and will be removed. Consider using --track or --set-upstream-to\n"));
-
-               strbuf_addf(&buf, "refs/remotes/%s", branch->name);
-               remote_tracking = ref_exists(buf.buf);
-               strbuf_release(&buf);
+                       die(_("the '--set-upstream' option is no longer supported. Please use '--track' or '--set-upstream-to' instead."));
 
-               branch_existed = ref_exists(branch->refname);
                create_branch(argv[0], (argc == 2) ? argv[1] : head,
-                             force, reflog, 0, quiet, track);
-
-               /*
-                * We only show the instructions if the user gave us
-                * one branch which doesn't exist locally, but is the
-                * name of a remote-tracking branch.
-                */
-               if (argc == 1 && track == BRANCH_TRACK_OVERRIDE &&
-                   !branch_existed && remote_tracking) {
-                       fprintf(stderr, _("\nIf you wanted to make '%s' track '%s', do this:\n\n"), head, branch->name);
-                       fprintf(stderr, "    git branch -d %s\n", branch->name);
-                       fprintf(stderr, "    git branch --set-upstream-to %s\n", branch->name);
-               }
+                             force, 0, reflog, quiet, track);
 
        } else
                usage_with_options(builtin_branch_usage, options);