checkout: relocate --to's "no branch specified" check

diff --git a/builtin/branch.c b/builtin/branch.c
index 9e4666f0c53164113ac211eee674ba838fb7ae72..1a475d8e94a2ce98344e8732ace444e35ccd9bfb 100644 (file)
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -62,39 +62,40 @@ static unsigned char merge_filter_ref[20];
 static struct string_list output = STRING_LIST_INIT_DUP;
 static unsigned int colopts;
 
-static int parse_branch_color_slot(const char *var, int ofs)
+static int parse_branch_color_slot(const char *slot)
 {
-       if (!strcasecmp(var+ofs, "plain"))
+       if (!strcasecmp(slot, "plain"))
                return BRANCH_COLOR_PLAIN;
-       if (!strcasecmp(var+ofs, "reset"))
+       if (!strcasecmp(slot, "reset"))
                return BRANCH_COLOR_RESET;
-       if (!strcasecmp(var+ofs, "remote"))
+       if (!strcasecmp(slot, "remote"))
                return BRANCH_COLOR_REMOTE;
-       if (!strcasecmp(var+ofs, "local"))
+       if (!strcasecmp(slot, "local"))
                return BRANCH_COLOR_LOCAL;
-       if (!strcasecmp(var+ofs, "current"))
+       if (!strcasecmp(slot, "current"))
                return BRANCH_COLOR_CURRENT;
-       if (!strcasecmp(var+ofs, "upstream"))
+       if (!strcasecmp(slot, "upstream"))
                return BRANCH_COLOR_UPSTREAM;
        return -1;
 }
 
 static int git_branch_config(const char *var, const char *value, void *cb)
 {
+       const char *slot_name;
+
        if (starts_with(var, "column."))
                return git_column_config(var, value, "branch", &colopts);
        if (!strcmp(var, "color.branch")) {
                branch_use_color = git_config_colorbool(var, value);
                return 0;
        }
-       if (starts_with(var, "color.branch.")) {
-               int slot = parse_branch_color_slot(var, 13);
+       if (skip_prefix(var, "color.branch.", &slot_name)) {
+               int slot = parse_branch_color_slot(slot_name);
                if (slot < 0)
                        return 0;
                if (!value)
                        return config_error_nonbool(var);
-               color_parse(value, var, branch_colors[slot]);
-               return 0;
+               return color_parse(value, branch_colors[slot]);
        }
        return git_color_default_config(var, value, cb);
 }
@@ -129,7 +130,8 @@ static int branch_merged(int kind, const char *name,
                    branch->merge[0] &&
                    branch->merge[0]->dst &&
                    (reference_name = reference_name_to_free =
-                    resolve_refdup(branch->merge[0]->dst, sha1, 1, NULL)) != NULL)
+                    resolve_refdup(branch->merge[0]->dst, RESOLVE_REF_READING,
+                                   sha1, NULL)) != NULL)
                        reference_rev = lookup_commit_reference(sha1);
        }
        if (!reference_rev)
@@ -233,9 +235,12 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                free(name);
 
                name = mkpathdup(fmt, bname.buf);
-               target = resolve_ref_unsafe(name, sha1, 0, &flags);
-               if (!target ||
-                   (!(flags & REF_ISSYMREF) && is_null_sha1(sha1))) {
+               target = resolve_ref_unsafe(name,
+                                           RESOLVE_REF_READING
+                                           | RESOLVE_REF_NO_RECURSE
+                                           | RESOLVE_REF_ALLOW_BAD_NAME,
+                                           sha1, &flags);
+               if (!target) {
                        error(remote_branch
                              ? _("remote branch '%s' not found.")
                              : _("branch '%s' not found."), bname.buf);
@@ -243,7 +248,7 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                        continue;
                }
 
-               if (!(flags & REF_ISSYMREF) &&
+               if (!(flags & (REF_ISSYMREF|REF_ISBROKEN)) &&
                    check_branch_commit(bname.buf, name, sha1, head_rev, kinds,
                                        force)) {
                        ret = 1;
@@ -263,8 +268,8 @@ static int delete_branches(int argc, const char **argv, int force, int kinds,
                               ? _("Deleted remote branch %s (was %s).\n")
                               : _("Deleted branch %s (was %s).\n"),
                               bname.buf,
-                              (flags & REF_ISSYMREF)
-                              ? target
+                              (flags & REF_ISBROKEN) ? "broken"
+                              : (flags & REF_ISSYMREF) ? target
                               : find_unique_abbrev(sha1, DEFAULT_ABBREV));
                }
                delete_branch_config(bname.buf);
@@ -297,7 +302,7 @@ static char *resolve_symref(const char *src, const char *prefix)
        int flag;
        const char *dst;
 
-       dst = resolve_ref_unsafe(src, sha1, 0, &flag);
+       dst = resolve_ref_unsafe(src, 0, sha1, &flag);
        if (!(dst && (flag & REF_ISSYMREF)))
                return NULL;
        if (prefix)
@@ -335,20 +340,18 @@ static int append_ref(const char *refname, const unsigned char *sha1, int flags,
        static struct {
                int kind;
                const char *prefix;
-               int pfxlen;
        } ref_kind[] = {
-               { REF_LOCAL_BRANCH, "refs/heads/", 11 },
-               { REF_REMOTE_BRANCH, "refs/remotes/", 13 },
+               { REF_LOCAL_BRANCH, "refs/heads/" },
+               { REF_REMOTE_BRANCH, "refs/remotes/" },
        };
 
        /* Detect kind */
        for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
                prefix = ref_kind[i].prefix;
-               if (strncmp(refname, prefix, ref_kind[i].pfxlen))
-                       continue;
-               kind = ref_kind[i].kind;
-               refname += ref_kind[i].pfxlen;
-               break;
+               if (skip_prefix(refname, prefix, &refname)) {
+                       kind = ref_kind[i].kind;
+                       break;
+               }
        }
        if (ARRAY_SIZE(ref_kind) <= i)
                return 0;
@@ -761,7 +764,6 @@ static const char edit_description[] = "BRANCH_DESCRIPTION";
 
 static int edit_branch_description(const char *branch_name)
 {
-       FILE *fp;
        int status;
        struct strbuf buf = STRBUF_INIT;
        struct strbuf name = STRBUF_INIT;
@@ -774,8 +776,7 @@ static int edit_branch_description(const char *branch_name)
                    "  %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)) {
+       if (write_file(git_path(edit_description), 0, "%s", buf.buf)) {
                strbuf_release(&buf);
                return error(_("could not write branch description template: %s"),
                             strerror(errno));
@@ -869,16 +870,13 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 
        track = git_branch_track;
 
-       head = resolve_refdup("HEAD", head_sha1, 0, NULL);
+       head = resolve_refdup("HEAD", 0, head_sha1, NULL);
        if (!head)
                die(_("Failed to resolve HEAD as a valid ref."));
-       if (!strcmp(head, "HEAD")) {
+       if (!strcmp(head, "HEAD"))
                detached = 1;
-       } else {
-               if (!starts_with(head, "refs/heads/"))
-                       die(_("HEAD not found below refs/heads!"));
-               head += 11;
-       }
+       else if (!skip_prefix(head, "refs/heads/", &head))
+               die(_("HEAD not found below refs/heads!"));
        hashcpy(merge_filter_ref, head_sha1);