Merge branch 'jk/fast-export-object-lookup'
[gitweb.git] / builtin / branch.c
index ea10bce3ba02dbc1afd804c2d91c7fc5a8445c10..00d17d25d1866323f9e1dffcb334a573f5de5221 100644 (file)
 #include "revision.h"
 #include "string-list.h"
 #include "column.h"
+#include "utf8.h"
 
 static const char * const builtin_branch_usage[] = {
-       "git branch [options] [-r | -a] [--merged | --no-merged]",
-       "git branch [options] [-l] [-f] <branchname> [<start-point>]",
-       "git branch [options] [-r] (-d | -D) <branchname>...",
-       "git branch [options] (-m | -M) [<oldbranch>] <newbranch>",
+       N_("git branch [options] [-r | -a] [--merged | --no-merged]"),
+       N_("git branch [options] [-l] [-f] <branchname> [<start-point>]"),
+       N_("git branch [options] [-r] (-d | -D) <branchname>..."),
+       N_("git branch [options] (-m | -M) [<oldbranch>] <newbranch>"),
        NULL
 };
 
@@ -129,7 +130,7 @@ static int branch_merged(int kind, const char *name,
        if (!reference_rev)
                reference_rev = head_rev;
 
-       merged = in_merge_bases(rev, &reference_rev, 1);
+       merged = in_merge_bases(rev, reference_rev);
 
        /*
         * After the safety valve is fully redefined to "check with
@@ -139,7 +140,7 @@ static int branch_merged(int kind, const char *name,
         * a gentle reminder is in order.
         */
        if ((head_rev != reference_rev) &&
-           in_merge_bases(rev, &head_rev, 1) != merged) {
+           in_merge_bases(rev, head_rev) != merged) {
                if (merged)
                        warning(_("deleting branch '%s' that has been merged to\n"
                                "         '%s', but not yet merged to HEAD."),
@@ -153,10 +154,37 @@ static int branch_merged(int kind, const char *name,
        return merged;
 }
 
+static int check_branch_commit(const char *branchname, const char *refname,
+                              unsigned char *sha1, struct commit *head_rev,
+                              int kinds, int force)
+{
+       struct commit *rev = lookup_commit_reference(sha1);
+       if (!rev) {
+               error(_("Couldn't look up commit object for '%s'"), refname);
+               return -1;
+       }
+       if (!force && !branch_merged(kinds, branchname, rev, head_rev)) {
+               error(_("The branch '%s' is not fully merged.\n"
+                     "If you are sure you want to delete it, "
+                     "run 'git branch -D %s'."), branchname, branchname);
+               return -1;
+       }
+       return 0;
+}
+
+static void delete_branch_config(const char *branchname)
+{
+       struct strbuf buf = STRBUF_INIT;
+       strbuf_addf(&buf, "branch.%s", branchname);
+       if (git_config_rename_section(buf.buf, NULL) < 0)
+               warning(_("Update of config-file failed"));
+       strbuf_release(&buf);
+}
+
 static int delete_branches(int argc, const char **argv, int force, int kinds,
                           int quiet)
 {
-       struct commit *rev, *head_rev = NULL;
+       struct commit *head_rev = NULL;
        unsigned char sha1[20];
        char *name = NULL;
        const char *fmt;
@@ -186,6 +214,9 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                        die(_("Couldn't look up commit object for HEAD"));
        }
        for (i = 0; i < argc; i++, strbuf_release(&bname)) {
+               const char *target;
+               int flags = 0;
+
                strbuf_branchname(&bname, argv[i]);
                if (kinds == REF_LOCAL_BRANCH && !strcmp(head, bname.buf)) {
                        error(_("Cannot delete the branch '%s' "
@@ -196,8 +227,10 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 
                free(name);
 
-               name = xstrdup(mkpath(fmt, bname.buf));
-               if (read_ref(name, sha1)) {
+               name = mkpathdup(fmt, bname.buf);
+               target = resolve_ref_unsafe(name, sha1, 0, &flags);
+               if (!target ||
+                   (!(flags & REF_ISSYMREF) && is_null_sha1(sha1))) {
                        error(remote_branch
                              ? _("remote branch '%s' not found.")
                              : _("branch '%s' not found."), bname.buf);
@@ -205,40 +238,31 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                        continue;
                }
 
-               rev = lookup_commit_reference(sha1);
-               if (!rev) {
-                       error(_("Couldn't look up commit object for '%s'"), name);
-                       ret = 1;
-                       continue;
-               }
-
-               if (!force && !branch_merged(kinds, bname.buf, rev, head_rev)) {
-                       error(_("The branch '%s' is not fully merged.\n"
-                             "If you are sure you want to delete it, "
-                             "run 'git branch -D %s'."), bname.buf, bname.buf);
+               if (!(flags & REF_ISSYMREF) &&
+                   check_branch_commit(bname.buf, name, sha1, head_rev, kinds,
+                                       force)) {
                        ret = 1;
                        continue;
                }
 
-               if (delete_ref(name, sha1, 0)) {
+               if (delete_ref(name, sha1, REF_NODEREF)) {
                        error(remote_branch
                              ? _("Error deleting remote branch '%s'")
                              : _("Error deleting branch '%s'"),
                              bname.buf);
                        ret = 1;
-               } else {
-                       struct strbuf buf = STRBUF_INIT;
-                       if (!quiet)
-                               printf(remote_branch
-                                      ? _("Deleted remote branch %s (was %s).\n")
-                                      : _("Deleted branch %s (was %s).\n"),
-                                      bname.buf,
-                                      find_unique_abbrev(sha1, DEFAULT_ABBREV));
-                       strbuf_addf(&buf, "branch.%s", bname.buf);
-                       if (git_config_rename_section(buf.buf, NULL) < 0)
-                               warning(_("Update of config-file failed"));
-                       strbuf_release(&buf);
+                       continue;
+               }
+               if (!quiet) {
+                       printf(remote_branch
+                              ? _("Deleted remote branch %s (was %s).\n")
+                              : _("Deleted branch %s (was %s).\n"),
+                              bname.buf,
+                              (flags & REF_ISSYMREF)
+                              ? target
+                              : find_unique_abbrev(sha1, DEFAULT_ABBREV));
                }
+               delete_branch_config(bname.buf);
        }
 
        free(name);
@@ -249,7 +273,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
 struct ref_item {
        char *name;
        char *dest;
-       unsigned int kind, len;
+       unsigned int kind, width;
        struct commit *commit;
 };
 
@@ -354,14 +378,14 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
        newitem->name = xstrdup(refname);
        newitem->kind = kind;
        newitem->commit = commit;
-       newitem->len = strlen(refname);
+       newitem->width = utf8_strwidth(refname);
        newitem->dest = resolve_symref(orig_refname, prefix);
        /* adjust for "remotes/" */
        if (newitem->kind == REF_REMOTE_BRANCH &&
            ref_list->kinds != REF_REMOTE_BRANCH)
-               newitem->len += 8;
-       if (newitem->len > ref_list->maxwidth)
-               ref_list->maxwidth = newitem->len;
+               newitem->width += 8;
+       if (newitem->width > ref_list->maxwidth)
+               ref_list->maxwidth = newitem->width;
 
        return 0;
 }
@@ -442,7 +466,7 @@ static void add_verbose_info(struct strbuf *out, struct ref_item *item,
                             int verbose, int abbrev)
 {
        struct strbuf subject = STRBUF_INIT, stat = STRBUF_INIT;
-       const char *sub = " **** invalid ref ****";
+       const char *sub = _(" **** invalid ref ****");
        struct commit *commit = item->commit;
 
        if (commit && !parse_commit(commit)) {
@@ -490,11 +514,12 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
        }
 
        strbuf_addf(&name, "%s%s", prefix, item->name);
-       if (verbose)
+       if (verbose) {
+               int utf8_compensation = strlen(name.buf) - utf8_strwidth(name.buf);
                strbuf_addf(&out, "%c %s%-*s%s", c, branch_get_color(color),
-                           maxwidth, name.buf,
+                           maxwidth + utf8_compensation, name.buf,
                            branch_get_color(BRANCH_COLOR_RESET));
-       else
+       else
                strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
                            name.buf, branch_get_color(BRANCH_COLOR_RESET));
 
@@ -519,8 +544,8 @@ static int calc_maxwidth(struct ref_list *refs)
        for (i = 0; i < refs->index; i++) {
                if (!matches_merge_filter(refs->list[i].commit))
                        continue;
-               if (refs->list[i].len > w)
-                       w = refs->list[i].len;
+               if (refs->list[i].width > w)
+                       w = refs->list[i].width;
        }
        return w;
 }
@@ -533,12 +558,12 @@ static void show_detached(struct ref_list *ref_list)
        if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
                struct ref_item item;
                item.name = xstrdup(_("(no branch)"));
-               item.len = strlen(item.name);
+               item.width = utf8_strwidth(item.name);
                item.kind = REF_LOCAL_BRANCH;
                item.dest = NULL;
                item.commit = head_commit;
-               if (item.len > ref_list->maxwidth)
-                       ref_list->maxwidth = item.len;
+               if (item.width > ref_list->maxwidth)
+                       ref_list->maxwidth = item.width;
                print_ref_item(&item, ref_list->maxwidth, ref_list->verbose, ref_list->abbrev, 1, "");
                free(item.name);
        }
@@ -565,7 +590,7 @@ static int print_ref_list(int kinds, int detached, int verbose, int abbrev, stru
                struct commit *filter;
                filter = lookup_commit_reference_gently(merge_filter_ref, 0);
                if (!filter)
-                       die("object '%s' does not point to a commit",
+                       die(_("object '%s' does not point to a commit"),
                            sha1_to_hex(merge_filter_ref));
 
                filter->object.flags |= UNINTERESTING;
@@ -681,11 +706,11 @@ static int edit_branch_description(const char *branch_name)
        read_branch_desc(&buf, branch_name);
        if (!buf.len || buf.buf[buf.len-1] != '\n')
                strbuf_addch(&buf, '\n');
-       strbuf_addf(&buf,
-                   "Please edit the description for the branch\n"
-                   "  %s\n"
-                   "# Lines starting with '#' will be stripped.\n",
-                   branch_name);
+       strbuf_commented_addf(&buf,
+                   "Please edit the description for the branch\n"
+                   "  %s\n"
+                   "Lines starting with '%c' will be stripped.\n",
+                   branch_name, comment_line_char);
        fp = fopen(git_path(edit_description), "w");
        if ((fwrite(buf.buf, 1, buf.len, fp) < buf.len) || fclose(fp)) {
                strbuf_release(&buf);
@@ -700,7 +725,7 @@ static int edit_branch_description(const char *branch_name)
        stripspace(&buf, 1);
 
        strbuf_addf(&name, "branch.%s.description", branch_name);
-       status = git_config_set(name.buf, buf.buf);
+       status = git_config_set(name.buf, buf.len ? buf.buf : NULL);
        strbuf_release(&name);
        strbuf_release(&buf);
 
@@ -712,62 +737,65 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        int delete = 0, rename = 0, force_create = 0, list = 0;
        int verbose = 0, abbrev = -1, detached = 0;
        int reflog = 0, edit_description = 0;
-       int quiet = 0;
+       int quiet = 0, unset_upstream = 0;
+       const char *new_upstream = NULL;
        enum branch_track track;
        int kinds = REF_LOCAL_BRANCH;
        struct commit_list *with_commit = NULL;
 
        struct option options[] = {
-               OPT_GROUP("Generic options"),
+               OPT_GROUP(N_("Generic options")),
                OPT__VERBOSE(&verbose,
-                       "show hash and subject, give twice for upstream branch"),
-               OPT__QUIET(&quiet, "suppress informational messages"),
-               OPT_SET_INT('t', "track",  &track, "set up tracking mode (see git-pull(1))",
+                       N_("show hash and subject, give twice for upstream branch")),
+               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, "change upstream info",
+               OPT_SET_INT( 0, "set-upstream",  &track, N_("change upstream info"),
                        BRANCH_TRACK_OVERRIDE),
-               OPT__COLOR(&branch_use_color, "use colored output"),
-               OPT_SET_INT('r', "remotes",     &kinds, "act on remote-tracking branches",
+               OPT_STRING('u', "set-upstream-to", &new_upstream, "upstream", "change the upstream info"),
+               OPT_BOOLEAN(0, "unset-upstream", &unset_upstream, "Unset the upstream info"),
+               OPT__COLOR(&branch_use_color, N_("use colored output")),
+               OPT_SET_INT('r', "remotes",     &kinds, N_("act on remote-tracking branches"),
                        REF_REMOTE_BRANCH),
                {
-                       OPTION_CALLBACK, 0, "contains", &with_commit, "commit",
-                       "print only branches that contain the commit",
+                       OPTION_CALLBACK, 0, "contains", &with_commit, N_("commit"),
+                       N_("print only branches that contain the commit"),
                        PARSE_OPT_LASTARG_DEFAULT,
                        parse_opt_with_commit, (intptr_t)"HEAD",
                },
                {
-                       OPTION_CALLBACK, 0, "with", &with_commit, "commit",
-                       "print only branches that contain the commit",
+                       OPTION_CALLBACK, 0, "with", &with_commit, N_("commit"),
+                       N_("print only branches that contain the commit"),
                        PARSE_OPT_HIDDEN | PARSE_OPT_LASTARG_DEFAULT,
                        parse_opt_with_commit, (intptr_t) "HEAD",
                },
                OPT__ABBREV(&abbrev),
 
-               OPT_GROUP("Specific git-branch actions:"),
-               OPT_SET_INT('a', "all", &kinds, "list both remote-tracking and local branches",
+               OPT_GROUP(N_("Specific git-branch actions:")),
+               OPT_SET_INT('a', "all", &kinds, N_("list both remote-tracking and local branches"),
                        REF_REMOTE_BRANCH | REF_LOCAL_BRANCH),
-               OPT_BIT('d', "delete", &delete, "delete fully merged branch", 1),
-               OPT_BIT('D', NULL, &delete, "delete branch (even if not merged)", 2),
-               OPT_BIT('m', "move", &rename, "move/rename a branch and its reflog", 1),
-               OPT_BIT('M', NULL, &rename, "move/rename a branch, even if target exists", 2),
-               OPT_BOOLEAN(0, "list", &list, "list branch names"),
-               OPT_BOOLEAN('l', "create-reflog", &reflog, "create the branch's reflog"),
+               OPT_BIT('d', "delete", &delete, N_("delete fully merged branch"), 1),
+               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_BOOLEAN(0, "list", &list, N_("list branch names")),
+               OPT_BOOLEAN('l', "create-reflog", &reflog, N_("create the branch's reflog")),
                OPT_BOOLEAN(0, "edit-description", &edit_description,
-                           "edit the description for the branch"),
-               OPT__FORCE(&force_create, "force creation (when already exists)"),
+                           N_("edit the description for the branch")),
+               OPT__FORCE(&force_create, N_("force creation (when already exists)")),
                {
                        OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
-                       "commit", "print only not merged branches",
+                       N_("commit"), N_("print only not merged branches"),
                        PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
                        opt_parse_merge_filter, (intptr_t) "HEAD",
                },
                {
                        OPTION_CALLBACK, 0, "merged", &merge_filter_ref,
-                       "commit", "print only merged branches",
+                       N_("commit"), N_("print only merged branches"),
                        PARSE_OPT_LASTARG_DEFAULT | PARSE_OPT_NONEG,
                        opt_parse_merge_filter, (intptr_t) "HEAD",
                },
-               OPT_COLUMN(0, "column", &colopts, "list branches in columns"),
+               OPT_COLUMN(0, "column", &colopts, N_("list branches in columns")),
                OPT_END(),
        };
 
@@ -794,10 +822,13 @@ 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 && argc == 0)
+       if (!delete && !rename && !edit_description && !new_upstream && !unset_upstream && argc == 0)
+               list = 1;
+
+       if (with_commit || merge_filter != NO_FILTER)
                list = 1;
 
-       if (!!delete + !!rename + !!force_create + !!list > 1)
+       if (!!delete + !!rename + !!force_create + !!list + !!new_upstream + !!unset_upstream > 1)
                usage_with_options(builtin_branch_usage, options);
 
        if (abbrev == -1)
@@ -809,9 +840,11 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                colopts = 0;
        }
 
-       if (delete)
+       if (delete) {
+               if (!argc)
+                       die(_("branch name required"));
                return delete_branches(argc, argv, delete > 1, kinds, quiet);
-       else if (list) {
+       else if (list) {
                int ret = print_ref_list(kinds, detached, verbose, abbrev,
                                         with_commit, argv);
                print_columns(&output, colopts, NULL);
@@ -824,22 +857,23 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
                if (!argc) {
                        if (detached)
-                               die("Cannot give description to detached HEAD");
+                               die(_("Cannot give description to detached HEAD"));
                        branch_name = head;
                } else if (argc == 1)
                        branch_name = argv[0];
                else
-                       usage_with_options(builtin_branch_usage, options);
+                       die(_("cannot edit description of more than one branch"));
 
                strbuf_addf(&branch_ref, "refs/heads/%s", branch_name);
                if (!ref_exists(branch_ref.buf)) {
                        strbuf_release(&branch_ref);
 
                        if (!argc)
-                               return error("No commit on branch '%s' yet.",
+                               return error(_("No commit on branch '%s' yet."),
                                             branch_name);
                        else
-                               return error("No such branch '%s'.", branch_name);
+                               return error(_("No branch named '%s'."),
+                                            branch_name);
                }
                strbuf_release(&branch_ref);
 
@@ -851,12 +885,90 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
                else if (argc == 2)
                        rename_branch(argv[0], argv[1], rename > 1);
                else
-                       usage_with_options(builtin_branch_usage, options);
+                       die(_("too many branches 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"));
+
+               if (!branch) {
+                       if (!argc || !strcmp(argv[0], "HEAD"))
+                               die(_("could not set upstream of HEAD to %s when "
+                                     "it does not point to any branch."),
+                                   new_upstream);
+                       die(_("no such branch '%s'"), argv[0]);
+               }
+
+               if (!ref_exists(branch->refname))
+                       die(_("branch '%s' does not exist"), branch->name);
+
+               /*
+                * create_branch takes care of setting up the tracking
+                * info and making sure new_upstream is correct
+                */
+               create_branch(head, branch->name, new_upstream, 0, 0, 0, quiet, BRANCH_TRACK_OVERRIDE);
+       } else if (unset_upstream) {
+               struct branch *branch = branch_get(argv[0]);
+               struct strbuf buf = STRBUF_INIT;
+
+               if (argc > 1)
+                       die(_("too many branches to unset upstream"));
+
+               if (!branch) {
+                       if (!argc || !strcmp(argv[0], "HEAD"))
+                               die(_("could not unset upstream of HEAD when "
+                                     "it does not point to any branch."));
+                       die(_("no such branch '%s'"), argv[0]);
+               }
+
+               if (!branch_has_merge_config(branch)) {
+                       die(_("Branch '%s' has no upstream information"), branch->name);
+               }
+
+               strbuf_addf(&buf, "branch.%s.remote", branch->name);
+               git_config_set_multivar(buf.buf, NULL, NULL, 1);
+               strbuf_reset(&buf);
+               strbuf_addf(&buf, "branch.%s.merge", branch->name);
+               git_config_set_multivar(buf.buf, NULL, NULL, 1);
+               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]);
+
                if (kinds != REF_LOCAL_BRANCH)
                        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);
+
+               branch_existed = ref_exists(branch->refname);
                create_branch(head, argv[0], (argc == 2) ? argv[1] : head,
                              force_create, 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);
+               }
+
        } else
                usage_with_options(builtin_branch_usage, options);