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git/builtin/branch.c
Junio C Hamano 38f6ae90de Merge branch 'mg/detached-head-report'
"git branch" on a detached HEAD always said "(detached from xyz)",
even when "git status" would report "detached at xyz".  The HEAD is
actually at xyz and haven't been moved since it was detached in
such a case, but the user cannot read what the current value of
HEAD is when "detached from" is used.

* mg/detached-head-report:
  branch: name detached HEAD analogous to status
  wt-status: refactor detached HEAD analysis
2015-03-20 13:11:46 -07:00

1053 lines
29 KiB
C

/*
* Builtin "git branch"
*
* Copyright (c) 2006 Kristian Høgsberg <krh@redhat.com>
* Based on git-branch.sh by Junio C Hamano.
*/
#include "cache.h"
#include "color.h"
#include "refs.h"
#include "commit.h"
#include "builtin.h"
#include "remote.h"
#include "parse-options.h"
#include "branch.h"
#include "diff.h"
#include "revision.h"
#include "string-list.h"
#include "column.h"
#include "utf8.h"
#include "wt-status.h"
static const char * const builtin_branch_usage[] = {
N_("git branch [<options>] [-r | -a] [--merged | --no-merged]"),
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>"),
NULL
};
#define REF_LOCAL_BRANCH 0x01
#define REF_REMOTE_BRANCH 0x02
static const char *head;
static unsigned char head_sha1[20];
static int branch_use_color = -1;
static char branch_colors[][COLOR_MAXLEN] = {
GIT_COLOR_RESET,
GIT_COLOR_NORMAL, /* PLAIN */
GIT_COLOR_RED, /* REMOTE */
GIT_COLOR_NORMAL, /* LOCAL */
GIT_COLOR_GREEN, /* CURRENT */
GIT_COLOR_BLUE, /* UPSTREAM */
};
enum color_branch {
BRANCH_COLOR_RESET = 0,
BRANCH_COLOR_PLAIN = 1,
BRANCH_COLOR_REMOTE = 2,
BRANCH_COLOR_LOCAL = 3,
BRANCH_COLOR_CURRENT = 4,
BRANCH_COLOR_UPSTREAM = 5
};
static enum merge_filter {
NO_FILTER = 0,
SHOW_NOT_MERGED,
SHOW_MERGED
} merge_filter;
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 *slot)
{
if (!strcasecmp(slot, "plain"))
return BRANCH_COLOR_PLAIN;
if (!strcasecmp(slot, "reset"))
return BRANCH_COLOR_RESET;
if (!strcasecmp(slot, "remote"))
return BRANCH_COLOR_REMOTE;
if (!strcasecmp(slot, "local"))
return BRANCH_COLOR_LOCAL;
if (!strcasecmp(slot, "current"))
return BRANCH_COLOR_CURRENT;
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 (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);
return color_parse(value, branch_colors[slot]);
}
return git_color_default_config(var, value, cb);
}
static const char *branch_get_color(enum color_branch ix)
{
if (want_color(branch_use_color))
return branch_colors[ix];
return "";
}
static int branch_merged(int kind, const char *name,
struct commit *rev, struct commit *head_rev)
{
/*
* This checks whether the merge bases of branch and HEAD (or
* the other branch this branch builds upon) contains the
* branch, which means that the branch has already been merged
* safely to HEAD (or the other branch).
*/
struct commit *reference_rev = NULL;
const char *reference_name = NULL;
void *reference_name_to_free = NULL;
int merged;
if (kind == REF_LOCAL_BRANCH) {
struct branch *branch = branch_get(name);
unsigned char sha1[20];
if (branch &&
branch->merge &&
branch->merge[0] &&
branch->merge[0]->dst &&
(reference_name = reference_name_to_free =
resolve_refdup(branch->merge[0]->dst, RESOLVE_REF_READING,
sha1, NULL)) != NULL)
reference_rev = lookup_commit_reference(sha1);
}
if (!reference_rev)
reference_rev = head_rev;
merged = in_merge_bases(rev, reference_rev);
/*
* After the safety valve is fully redefined to "check with
* upstream, if any, otherwise with HEAD", we should just
* return the result of the in_merge_bases() above without
* any of the following code, but during the transition period,
* a gentle reminder is in order.
*/
if ((head_rev != reference_rev) &&
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."),
name, reference_name);
else
warning(_("not deleting branch '%s' that is not yet merged to\n"
" '%s', even though it is merged to HEAD."),
name, reference_name);
}
free(reference_name_to_free);
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 *head_rev = NULL;
unsigned char sha1[20];
char *name = NULL;
const char *fmt;
int i;
int ret = 0;
int remote_branch = 0;
struct strbuf bname = STRBUF_INIT;
switch (kinds) {
case REF_REMOTE_BRANCH:
fmt = "refs/remotes/%s";
/* For subsequent UI messages */
remote_branch = 1;
force = 1;
break;
case REF_LOCAL_BRANCH:
fmt = "refs/heads/%s";
break;
default:
die(_("cannot use -a with -d"));
}
if (!force) {
head_rev = lookup_commit_reference(head_sha1);
if (!head_rev)
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' "
"which you are currently on."), bname.buf);
ret = 1;
continue;
}
free(name);
name = mkpathdup(fmt, bname.buf);
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);
ret = 1;
continue;
}
if (!(flags & (REF_ISSYMREF|REF_ISBROKEN)) &&
check_branch_commit(bname.buf, name, sha1, head_rev, kinds,
force)) {
ret = 1;
continue;
}
if (delete_ref(name, sha1, REF_NODEREF)) {
error(remote_branch
? _("Error deleting remote branch '%s'")
: _("Error deleting branch '%s'"),
bname.buf);
ret = 1;
continue;
}
if (!quiet) {
printf(remote_branch
? _("Deleted remote branch %s (was %s).\n")
: _("Deleted branch %s (was %s).\n"),
bname.buf,
(flags & REF_ISBROKEN) ? "broken"
: (flags & REF_ISSYMREF) ? target
: find_unique_abbrev(sha1, DEFAULT_ABBREV));
}
delete_branch_config(bname.buf);
}
free(name);
return(ret);
}
struct ref_item {
char *name;
char *dest;
unsigned int kind, width;
struct commit *commit;
int ignore;
};
struct ref_list {
struct rev_info revs;
int index, alloc, maxwidth, verbose, abbrev;
struct ref_item *list;
struct commit_list *with_commit;
int kinds;
};
static char *resolve_symref(const char *src, const char *prefix)
{
unsigned char sha1[20];
int flag;
const char *dst;
dst = resolve_ref_unsafe(src, 0, sha1, &flag);
if (!(dst && (flag & REF_ISSYMREF)))
return NULL;
if (prefix)
skip_prefix(dst, prefix, &dst);
return xstrdup(dst);
}
struct append_ref_cb {
struct ref_list *ref_list;
const char **pattern;
int ret;
};
static int match_patterns(const char **pattern, const char *refname)
{
if (!*pattern)
return 1; /* no pattern always matches */
while (*pattern) {
if (!wildmatch(*pattern, refname, 0, NULL))
return 1;
pattern++;
}
return 0;
}
static int append_ref(const char *refname, const unsigned char *sha1, int flags, void *cb_data)
{
struct append_ref_cb *cb = (struct append_ref_cb *)(cb_data);
struct ref_list *ref_list = cb->ref_list;
struct ref_item *newitem;
struct commit *commit;
int kind, i;
const char *prefix, *orig_refname = refname;
static struct {
int kind;
const char *prefix;
} ref_kind[] = {
{ 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 (skip_prefix(refname, prefix, &refname)) {
kind = ref_kind[i].kind;
break;
}
}
if (ARRAY_SIZE(ref_kind) <= i)
return 0;
/* Don't add types the caller doesn't want */
if ((kind & ref_list->kinds) == 0)
return 0;
if (!match_patterns(cb->pattern, refname))
return 0;
commit = NULL;
if (ref_list->verbose || ref_list->with_commit || merge_filter != NO_FILTER) {
commit = lookup_commit_reference_gently(sha1, 1);
if (!commit) {
cb->ret = error(_("branch '%s' does not point at a commit"), refname);
return 0;
}
/* Filter with with_commit if specified */
if (!is_descendant_of(commit, ref_list->with_commit))
return 0;
if (merge_filter != NO_FILTER)
add_pending_object(&ref_list->revs,
(struct object *)commit, refname);
}
ALLOC_GROW(ref_list->list, ref_list->index + 1, ref_list->alloc);
/* Record the new item */
newitem = &(ref_list->list[ref_list->index++]);
newitem->name = xstrdup(refname);
newitem->kind = kind;
newitem->commit = commit;
newitem->width = utf8_strwidth(refname);
newitem->dest = resolve_symref(orig_refname, prefix);
newitem->ignore = 0;
/* adjust for "remotes/" */
if (newitem->kind == REF_REMOTE_BRANCH &&
ref_list->kinds != REF_REMOTE_BRANCH)
newitem->width += 8;
if (newitem->width > ref_list->maxwidth)
ref_list->maxwidth = newitem->width;
return 0;
}
static void free_ref_list(struct ref_list *ref_list)
{
int i;
for (i = 0; i < ref_list->index; i++) {
free(ref_list->list[i].name);
free(ref_list->list[i].dest);
}
free(ref_list->list);
}
static int ref_cmp(const void *r1, const void *r2)
{
struct ref_item *c1 = (struct ref_item *)(r1);
struct ref_item *c2 = (struct ref_item *)(r2);
if (c1->kind != c2->kind)
return c1->kind - c2->kind;
return strcmp(c1->name, c2->name);
}
static void fill_tracking_info(struct strbuf *stat, const char *branch_name,
int show_upstream_ref)
{
int ours, theirs;
char *ref = NULL;
struct branch *branch = branch_get(branch_name);
struct strbuf fancy = STRBUF_INIT;
int upstream_is_gone = 0;
int added_decoration = 1;
switch (stat_tracking_info(branch, &ours, &theirs)) {
case 0:
/* no base */
return;
case -1:
/* with "gone" base */
upstream_is_gone = 1;
break;
default:
/* with base */
break;
}
if (show_upstream_ref) {
ref = shorten_unambiguous_ref(branch->merge[0]->dst, 0);
if (want_color(branch_use_color))
strbuf_addf(&fancy, "%s%s%s",
branch_get_color(BRANCH_COLOR_UPSTREAM),
ref, branch_get_color(BRANCH_COLOR_RESET));
else
strbuf_addstr(&fancy, ref);
}
if (upstream_is_gone) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: gone]"), fancy.buf);
else
added_decoration = 0;
} else if (!ours && !theirs) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s]"), fancy.buf);
else
added_decoration = 0;
} else if (!ours) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: behind %d]"), fancy.buf, theirs);
else
strbuf_addf(stat, _("[behind %d]"), theirs);
} else if (!theirs) {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: ahead %d]"), fancy.buf, ours);
else
strbuf_addf(stat, _("[ahead %d]"), ours);
} else {
if (show_upstream_ref)
strbuf_addf(stat, _("[%s: ahead %d, behind %d]"),
fancy.buf, ours, theirs);
else
strbuf_addf(stat, _("[ahead %d, behind %d]"),
ours, theirs);
}
strbuf_release(&fancy);
if (added_decoration)
strbuf_addch(stat, ' ');
free(ref);
}
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 ****");
struct commit *commit = item->commit;
if (!parse_commit(commit)) {
pp_commit_easy(CMIT_FMT_ONELINE, commit, &subject);
sub = subject.buf;
}
if (item->kind == REF_LOCAL_BRANCH)
fill_tracking_info(&stat, item->name, verbose > 1);
strbuf_addf(out, " %s %s%s",
find_unique_abbrev(item->commit->object.sha1, abbrev),
stat.buf, sub);
strbuf_release(&stat);
strbuf_release(&subject);
}
static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
int abbrev, int current, char *prefix)
{
char c;
int color;
struct strbuf out = STRBUF_INIT, name = STRBUF_INIT;
if (item->ignore)
return;
switch (item->kind) {
case REF_LOCAL_BRANCH:
color = BRANCH_COLOR_LOCAL;
break;
case REF_REMOTE_BRANCH:
color = BRANCH_COLOR_REMOTE;
break;
default:
color = BRANCH_COLOR_PLAIN;
break;
}
c = ' ';
if (current) {
c = '*';
color = BRANCH_COLOR_CURRENT;
}
strbuf_addf(&name, "%s%s", prefix, item->name);
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 + utf8_compensation, name.buf,
branch_get_color(BRANCH_COLOR_RESET));
} else
strbuf_addf(&out, "%c %s%s%s", c, branch_get_color(color),
name.buf, branch_get_color(BRANCH_COLOR_RESET));
if (item->dest)
strbuf_addf(&out, " -> %s", item->dest);
else if (verbose)
/* " f7c0c00 [ahead 58, behind 197] vcs-svn: drop obj_pool.h" */
add_verbose_info(&out, item, verbose, abbrev);
if (column_active(colopts)) {
assert(!verbose && "--column and --verbose are incompatible");
string_list_append(&output, out.buf);
} else {
printf("%s\n", out.buf);
}
strbuf_release(&name);
strbuf_release(&out);
}
static int calc_maxwidth(struct ref_list *refs)
{
int i, w = 0;
for (i = 0; i < refs->index; i++) {
if (refs->list[i].ignore)
continue;
if (refs->list[i].width > w)
w = refs->list[i].width;
}
return w;
}
static char *get_head_description(void)
{
struct strbuf desc = STRBUF_INIT;
struct wt_status_state state;
memset(&state, 0, sizeof(state));
wt_status_get_state(&state, 1);
if (state.rebase_in_progress ||
state.rebase_interactive_in_progress)
strbuf_addf(&desc, _("(no branch, rebasing %s)"),
state.branch);
else if (state.bisect_in_progress)
strbuf_addf(&desc, _("(no branch, bisect started on %s)"),
state.branch);
else if (state.detached_from) {
/* TRANSLATORS: make sure these match _("HEAD detached at ")
and _("HEAD detached from ") in wt-status.c */
if (state.detached_at)
strbuf_addf(&desc, _("(HEAD detached at %s)"),
state.detached_from);
else
strbuf_addf(&desc, _("(HEAD detached from %s)"),
state.detached_from);
}
else
strbuf_addstr(&desc, _("(no branch)"));
free(state.branch);
free(state.onto);
free(state.detached_from);
return strbuf_detach(&desc, NULL);
}
static void show_detached(struct ref_list *ref_list)
{
struct commit *head_commit = lookup_commit_reference_gently(head_sha1, 1);
if (head_commit && is_descendant_of(head_commit, ref_list->with_commit)) {
struct ref_item item;
item.name = get_head_description();
item.width = utf8_strwidth(item.name);
item.kind = REF_LOCAL_BRANCH;
item.dest = NULL;
item.commit = head_commit;
item.ignore = 0;
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);
}
}
static int print_ref_list(int kinds, int detached, int verbose, int abbrev, struct commit_list *with_commit, const char **pattern)
{
int i;
struct append_ref_cb cb;
struct ref_list ref_list;
memset(&ref_list, 0, sizeof(ref_list));
ref_list.kinds = kinds;
ref_list.verbose = verbose;
ref_list.abbrev = abbrev;
ref_list.with_commit = with_commit;
if (merge_filter != NO_FILTER)
init_revisions(&ref_list.revs, NULL);
cb.ref_list = &ref_list;
cb.pattern = pattern;
cb.ret = 0;
for_each_rawref(append_ref, &cb);
if (merge_filter != NO_FILTER) {
struct commit *filter;
filter = lookup_commit_reference_gently(merge_filter_ref, 0);
if (!filter)
die(_("object '%s' does not point to a commit"),
sha1_to_hex(merge_filter_ref));
filter->object.flags |= UNINTERESTING;
add_pending_object(&ref_list.revs,
(struct object *) filter, "");
ref_list.revs.limited = 1;
if (prepare_revision_walk(&ref_list.revs))
die(_("revision walk setup failed"));
for (i = 0; i < ref_list.index; i++) {
struct ref_item *item = &ref_list.list[i];
struct commit *commit = item->commit;
int is_merged = !!(commit->object.flags & UNINTERESTING);
item->ignore = is_merged != (merge_filter == SHOW_MERGED);
}
for (i = 0; i < ref_list.index; i++) {
struct ref_item *item = &ref_list.list[i];
clear_commit_marks(item->commit, ALL_REV_FLAGS);
}
clear_commit_marks(filter, ALL_REV_FLAGS);
if (verbose)
ref_list.maxwidth = calc_maxwidth(&ref_list);
}
qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
detached = (detached && (kinds & REF_LOCAL_BRANCH));
if (detached && match_patterns(pattern, "HEAD"))
show_detached(&ref_list);
for (i = 0; i < ref_list.index; i++) {
int current = !detached &&
(ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
!strcmp(ref_list.list[i].name, head);
char *prefix = (kinds != REF_REMOTE_BRANCH &&
ref_list.list[i].kind == REF_REMOTE_BRANCH)
? "remotes/" : "";
print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
abbrev, current, prefix);
}
free_ref_list(&ref_list);
if (cb.ret)
error(_("some refs could not be read"));
return cb.ret;
}
static void rename_branch(const char *oldname, const char *newname, 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 (strbuf_check_branch_ref(&oldref, oldname)) {
/*
* Bad name --- this could be an attempt to rename a
* ref that we used to allow to be created by accident.
*/
if (ref_exists(oldref.buf))
recovery = 1;
else
die(_("Invalid branch name: '%s'"), oldname);
}
/*
* 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);
strbuf_addf(&logmsg, "Branch: renamed %s to %s",
oldref.buf, newref.buf);
if (rename_ref(oldref.buf, newref.buf, logmsg.buf))
die(_("Branch rename failed"));
strbuf_release(&logmsg);
if (recovery)
warning(_("Renamed a misnamed branch '%s' away"), oldref.buf + 11);
/* no need to pass logmsg here as HEAD didn't really move */
if (!strcmp(oldname, head) && create_symref("HEAD", newref.buf, NULL))
die(_("Branch renamed to %s, but HEAD is not updated!"), newname);
strbuf_addf(&oldsection, "branch.%s", oldref.buf + 11);
strbuf_release(&oldref);
strbuf_addf(&newsection, "branch.%s", newref.buf + 11);
strbuf_release(&newref);
if (git_config_rename_section(oldsection.buf, newsection.buf) < 0)
die(_("Branch is renamed, but update of config-file failed"));
strbuf_release(&oldsection);
strbuf_release(&newsection);
}
static int opt_parse_merge_filter(const struct option *opt, const char *arg, int unset)
{
merge_filter = ((opt->long_name[0] == 'n')
? SHOW_NOT_MERGED
: SHOW_MERGED);
if (unset)
merge_filter = SHOW_NOT_MERGED; /* b/c for --no-merged */
if (!arg)
arg = "HEAD";
if (get_sha1(arg, merge_filter_ref))
die(_("malformed object name %s"), arg);
return 0;
}
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;
read_branch_desc(&buf, branch_name);
if (!buf.len || buf.buf[buf.len-1] != '\n')
strbuf_addch(&buf, '\n');
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);
return error(_("could not write branch description template: %s"),
strerror(errno));
}
strbuf_reset(&buf);
if (launch_editor(git_path(edit_description), &buf, NULL)) {
strbuf_release(&buf);
return -1;
}
stripspace(&buf, 1);
strbuf_addf(&name, "branch.%s.description", branch_name);
status = git_config_set(name.buf, buf.len ? buf.buf : NULL);
strbuf_release(&name);
strbuf_release(&buf);
return status;
}
int cmd_branch(int argc, const char **argv, const char *prefix)
{
int delete = 0, rename = 0, force = 0, list = 0;
int verbose = 0, abbrev = -1, detached = 0;
int reflog = 0, edit_description = 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(N_("Generic options")),
OPT__VERBOSE(&verbose,
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, N_("change upstream info"),
BRANCH_TRACK_OVERRIDE),
OPT_STRING('u', "set-upstream-to", &new_upstream, "upstream", "change the upstream info"),
OPT_BOOL(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, 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, 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(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, 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_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")),
{
OPTION_CALLBACK, 0, "no-merged", &merge_filter_ref,
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,
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, N_("list branches in columns")),
OPT_END(),
};
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_branch_usage, options);
git_config(git_branch_config, NULL);
track = git_branch_track;
head = resolve_refdup("HEAD", 0, head_sha1, NULL);
if (!head)
die(_("Failed to resolve HEAD as a valid ref."));
if (!strcmp(head, "HEAD"))
detached = 1;
else if (!skip_prefix(head, "refs/heads/", &head))
die(_("HEAD not found below refs/heads!"));
hashcpy(merge_filter_ref, head_sha1);
argc = parse_options(argc, argv, prefix, options, builtin_branch_usage,
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 + !!new_upstream +
list + unset_upstream > 1)
usage_with_options(builtin_branch_usage, options);
if (abbrev == -1)
abbrev = DEFAULT_ABBREV;
finalize_colopts(&colopts, -1);
if (verbose) {
if (explicitly_enable_column(colopts))
die(_("--column and --verbose are incompatible"));
colopts = 0;
}
if (force) {
delete *= 2;
rename *= 2;
}
if (delete) {
if (!argc)
die(_("branch name required"));
return delete_branches(argc, argv, delete > 1, kinds, quiet);
} else if (list) {
int ret = print_ref_list(kinds, detached, verbose, abbrev,
with_commit, argv);
print_columns(&output, colopts, NULL);
string_list_clear(&output, 0);
return ret;
}
else if (edit_description) {
const char *branch_name;
struct strbuf branch_ref = STRBUF_INIT;
if (!argc) {
if (detached)
die(_("Cannot give description to detached HEAD"));
branch_name = head;
} else if (argc == 1)
branch_name = argv[0];
else
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."),
branch_name);
else
return error(_("No branch named '%s'."),
branch_name);
}
strbuf_release(&branch_ref);
if (edit_branch_description(branch_name))
return 1;
} else if (rename) {
if (!argc)
die(_("branch name required"));
else if (argc == 1)
rename_branch(head, argv[0], rename > 1);
else if (argc == 2)
rename_branch(argv[0], argv[1], rename > 1);
else
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, 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);
return 0;
}