]> git.ipfire.org Git - thirdparty/git.git/blobdiff - builtin/branch.c
branch: split validate_new_branchname() into two
[thirdparty/git.git] / builtin / branch.c
index 355f9ef5da164d4d3e88872984fced9e9a744a84..e5bbfb4a171fcacd92ca9614dbcd0f97627d8c77 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
@@ -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;
 
@@ -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 +458,18 @@ 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;
        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)) {
                /*
@@ -481,22 +486,36 @@ 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 (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(_("Copied a misnamed branch '%s' away"),
+                               oldref.buf + 11);
+               else
+                       warning(_("Renamed a misnamed branch '%s' away"),
+                               oldref.buf + 11);
+       }
 
-       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);
@@ -505,8 +524,10 @@ static void rename_branch(const char *oldname, const char *newname, int force)
        strbuf_release(&oldref);
        strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
        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 +565,7 @@ 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;
@@ -581,6 +602,8 @@ 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,
@@ -624,14 +647,14 @@ 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);
 
@@ -649,6 +672,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        if (force) {
                delete *= 2;
                rename *= 2;
+               copy *= 2;
        }
 
        if (delete) {
@@ -703,20 +727,29 @@ 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 +772,7 @@ 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"))