git/builtin/show-branch.c
Jeff King 517fe807d6 assert NOARG/NONEG behavior of parse-options callbacks
When we define a parse-options callback, the flags we put in the option
struct must match what the callback expects. For example, a callback
which does not handle the "unset" parameter should only be used with
PARSE_OPT_NONEG. But since the callback and the option struct are not
defined next to each other, it's easy to get this wrong (as earlier
patches in this series show).

Fortunately, the compiler can help us here: compiling with
-Wunused-parameters can show us which callbacks ignore their "unset"
parameters (and likewise, ones that ignore "arg" expect to be triggered
with PARSE_OPT_NOARG).

But after we've inspected a callback and determined that all of its
callers use the right flags, what do we do next? We'd like to silence
the compiler warning, but do so in a way that will catch any wrong calls
in the future.

We can do that by actually checking those variables and asserting that
they match our expectations. Because this is such a common pattern,
we'll introduce some helper macros. The resulting messages aren't
as descriptive as we could make them, but the file/line information from
BUG() is enough to identify the problem (and anyway, the point is that
these should never be seen).

Each of the annotated callbacks in this patch triggers
-Wunused-parameters, and was manually inspected to make sure all callers
use the correct options (so none of these BUGs should be triggerable).

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-11-06 12:56:29 +09:00

954 lines
23 KiB
C

#include "cache.h"
#include "config.h"
#include "pretty.h"
#include "refs.h"
#include "builtin.h"
#include "color.h"
#include "argv-array.h"
#include "parse-options.h"
#include "dir.h"
#include "commit-slab.h"
static const char* show_branch_usage[] = {
N_("git show-branch [-a | --all] [-r | --remotes] [--topo-order | --date-order]\n"
" [--current] [--color[=<when>] | --no-color] [--sparse]\n"
" [--more=<n> | --list | --independent | --merge-base]\n"
" [--no-name | --sha1-name] [--topics] [(<rev> | <glob>)...]"),
N_("git show-branch (-g | --reflog)[=<n>[,<base>]] [--list] [<ref>]"),
NULL
};
static int showbranch_use_color = -1;
static struct argv_array default_args = ARGV_ARRAY_INIT;
/*
* TODO: convert this use of commit->object.flags to commit-slab
* instead to store a pointer to ref name directly. Then use the same
* UNINTERESTING definition from revision.h here.
*/
#define UNINTERESTING 01
#define REV_SHIFT 2
#define MAX_REVS (FLAG_BITS - REV_SHIFT) /* should not exceed bits_per_int - REV_SHIFT */
#define DEFAULT_REFLOG 4
static const char *get_color_code(int idx)
{
if (want_color(showbranch_use_color))
return column_colors_ansi[idx % column_colors_ansi_max];
return "";
}
static const char *get_color_reset_code(void)
{
if (want_color(showbranch_use_color))
return GIT_COLOR_RESET;
return "";
}
static struct commit *interesting(struct commit_list *list)
{
while (list) {
struct commit *commit = list->item;
list = list->next;
if (commit->object.flags & UNINTERESTING)
continue;
return commit;
}
return NULL;
}
struct commit_name {
const char *head_name; /* which head's ancestor? */
int generation; /* how many parents away from head_name */
};
define_commit_slab(commit_name_slab, struct commit_name *);
static struct commit_name_slab name_slab;
static struct commit_name *commit_to_name(struct commit *commit)
{
return *commit_name_slab_at(&name_slab, commit);
}
/* Name the commit as nth generation ancestor of head_name;
* we count only the first-parent relationship for naming purposes.
*/
static void name_commit(struct commit *commit, const char *head_name, int nth)
{
struct commit_name *name;
name = *commit_name_slab_at(&name_slab, commit);
if (!name) {
name = xmalloc(sizeof(*name));
*commit_name_slab_at(&name_slab, commit) = name;
}
name->head_name = head_name;
name->generation = nth;
}
/* Parent is the first parent of the commit. We may name it
* as (n+1)th generation ancestor of the same head_name as
* commit is nth generation ancestor of, if that generation
* number is better than the name it already has.
*/
static void name_parent(struct commit *commit, struct commit *parent)
{
struct commit_name *commit_name = commit_to_name(commit);
struct commit_name *parent_name = commit_to_name(parent);
if (!commit_name)
return;
if (!parent_name ||
commit_name->generation + 1 < parent_name->generation)
name_commit(parent, commit_name->head_name,
commit_name->generation + 1);
}
static int name_first_parent_chain(struct commit *c)
{
int i = 0;
while (c) {
struct commit *p;
if (!commit_to_name(c))
break;
if (!c->parents)
break;
p = c->parents->item;
if (!commit_to_name(p)) {
name_parent(c, p);
i++;
}
else
break;
c = p;
}
return i;
}
static void name_commits(struct commit_list *list,
struct commit **rev,
char **ref_name,
int num_rev)
{
struct commit_list *cl;
struct commit *c;
int i;
/* First give names to the given heads */
for (cl = list; cl; cl = cl->next) {
c = cl->item;
if (commit_to_name(c))
continue;
for (i = 0; i < num_rev; i++) {
if (rev[i] == c) {
name_commit(c, ref_name[i], 0);
break;
}
}
}
/* Then commits on the first parent ancestry chain */
do {
i = 0;
for (cl = list; cl; cl = cl->next) {
i += name_first_parent_chain(cl->item);
}
} while (i);
/* Finally, any unnamed commits */
do {
i = 0;
for (cl = list; cl; cl = cl->next) {
struct commit_list *parents;
struct commit_name *n;
int nth;
c = cl->item;
if (!commit_to_name(c))
continue;
n = commit_to_name(c);
parents = c->parents;
nth = 0;
while (parents) {
struct commit *p = parents->item;
struct strbuf newname = STRBUF_INIT;
parents = parents->next;
nth++;
if (commit_to_name(p))
continue;
switch (n->generation) {
case 0:
strbuf_addstr(&newname, n->head_name);
break;
case 1:
strbuf_addf(&newname, "%s^", n->head_name);
break;
default:
strbuf_addf(&newname, "%s~%d",
n->head_name, n->generation);
break;
}
if (nth == 1)
strbuf_addch(&newname, '^');
else
strbuf_addf(&newname, "^%d", nth);
name_commit(p, strbuf_detach(&newname, NULL), 0);
i++;
name_first_parent_chain(p);
}
}
} while (i);
}
static int mark_seen(struct commit *commit, struct commit_list **seen_p)
{
if (!commit->object.flags) {
commit_list_insert(commit, seen_p);
return 1;
}
return 0;
}
static void join_revs(struct commit_list **list_p,
struct commit_list **seen_p,
int num_rev, int extra)
{
int all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
int all_revs = all_mask & ~((1u << REV_SHIFT) - 1);
while (*list_p) {
struct commit_list *parents;
int still_interesting = !!interesting(*list_p);
struct commit *commit = pop_commit(list_p);
int flags = commit->object.flags & all_mask;
if (!still_interesting && extra <= 0)
break;
mark_seen(commit, seen_p);
if ((flags & all_revs) == all_revs)
flags |= UNINTERESTING;
parents = commit->parents;
while (parents) {
struct commit *p = parents->item;
int this_flag = p->object.flags;
parents = parents->next;
if ((this_flag & flags) == flags)
continue;
parse_commit(p);
if (mark_seen(p, seen_p) && !still_interesting)
extra--;
p->object.flags |= flags;
commit_list_insert_by_date(p, list_p);
}
}
/*
* Postprocess to complete well-poisoning.
*
* At this point we have all the commits we have seen in
* seen_p list. Mark anything that can be reached from
* uninteresting commits not interesting.
*/
for (;;) {
int changed = 0;
struct commit_list *s;
for (s = *seen_p; s; s = s->next) {
struct commit *c = s->item;
struct commit_list *parents;
if (((c->object.flags & all_revs) != all_revs) &&
!(c->object.flags & UNINTERESTING))
continue;
/* The current commit is either a merge base or
* already uninteresting one. Mark its parents
* as uninteresting commits _only_ if they are
* already parsed. No reason to find new ones
* here.
*/
parents = c->parents;
while (parents) {
struct commit *p = parents->item;
parents = parents->next;
if (!(p->object.flags & UNINTERESTING)) {
p->object.flags |= UNINTERESTING;
changed = 1;
}
}
}
if (!changed)
break;
}
}
static void show_one_commit(struct commit *commit, int no_name)
{
struct strbuf pretty = STRBUF_INIT;
const char *pretty_str = "(unavailable)";
struct commit_name *name = commit_to_name(commit);
if (commit->object.parsed) {
pp_commit_easy(CMIT_FMT_ONELINE, commit, &pretty);
pretty_str = pretty.buf;
}
skip_prefix(pretty_str, "[PATCH] ", &pretty_str);
if (!no_name) {
if (name && name->head_name) {
printf("[%s", name->head_name);
if (name->generation) {
if (name->generation == 1)
printf("^");
else
printf("~%d", name->generation);
}
printf("] ");
}
else
printf("[%s] ",
find_unique_abbrev(&commit->object.oid,
DEFAULT_ABBREV));
}
puts(pretty_str);
strbuf_release(&pretty);
}
static char *ref_name[MAX_REVS + 1];
static int ref_name_cnt;
static const char *find_digit_prefix(const char *s, int *v)
{
const char *p;
int ver;
char ch;
for (p = s, ver = 0;
'0' <= (ch = *p) && ch <= '9';
p++)
ver = ver * 10 + ch - '0';
*v = ver;
return p;
}
static int version_cmp(const char *a, const char *b)
{
while (1) {
int va, vb;
a = find_digit_prefix(a, &va);
b = find_digit_prefix(b, &vb);
if (va != vb)
return va - vb;
while (1) {
int ca = *a;
int cb = *b;
if ('0' <= ca && ca <= '9')
ca = 0;
if ('0' <= cb && cb <= '9')
cb = 0;
if (ca != cb)
return ca - cb;
if (!ca)
break;
a++;
b++;
}
if (!*a && !*b)
return 0;
}
}
static int compare_ref_name(const void *a_, const void *b_)
{
const char * const*a = a_, * const*b = b_;
return version_cmp(*a, *b);
}
static void sort_ref_range(int bottom, int top)
{
QSORT(ref_name + bottom, top - bottom, compare_ref_name);
}
static int append_ref(const char *refname, const struct object_id *oid,
int allow_dups)
{
struct commit *commit = lookup_commit_reference_gently(the_repository,
oid, 1);
int i;
if (!commit)
return 0;
if (!allow_dups) {
/* Avoid adding the same thing twice */
for (i = 0; i < ref_name_cnt; i++)
if (!strcmp(refname, ref_name[i]))
return 0;
}
if (MAX_REVS <= ref_name_cnt) {
warning(Q_("ignoring %s; cannot handle more than %d ref",
"ignoring %s; cannot handle more than %d refs",
MAX_REVS), refname, MAX_REVS);
return 0;
}
ref_name[ref_name_cnt++] = xstrdup(refname);
ref_name[ref_name_cnt] = NULL;
return 0;
}
static int append_head_ref(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
struct object_id tmp;
int ofs = 11;
if (!starts_with(refname, "refs/heads/"))
return 0;
/* If both heads/foo and tags/foo exists, get_sha1 would
* get confused.
*/
if (get_oid(refname + ofs, &tmp) || !oideq(&tmp, oid))
ofs = 5;
return append_ref(refname + ofs, oid, 0);
}
static int append_remote_ref(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
struct object_id tmp;
int ofs = 13;
if (!starts_with(refname, "refs/remotes/"))
return 0;
/* If both heads/foo and tags/foo exists, get_sha1 would
* get confused.
*/
if (get_oid(refname + ofs, &tmp) || !oideq(&tmp, oid))
ofs = 5;
return append_ref(refname + ofs, oid, 0);
}
static int append_tag_ref(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
if (!starts_with(refname, "refs/tags/"))
return 0;
return append_ref(refname + 5, oid, 0);
}
static const char *match_ref_pattern = NULL;
static int match_ref_slash = 0;
static int append_matching_ref(const char *refname, const struct object_id *oid,
int flag, void *cb_data)
{
/* we want to allow pattern hold/<asterisk> to show all
* branches under refs/heads/hold/, and v0.99.9? to show
* refs/tags/v0.99.9a and friends.
*/
const char *tail;
int slash = count_slashes(refname);
for (tail = refname; *tail && match_ref_slash < slash; )
if (*tail++ == '/')
slash--;
if (!*tail)
return 0;
if (wildmatch(match_ref_pattern, tail, 0))
return 0;
if (starts_with(refname, "refs/heads/"))
return append_head_ref(refname, oid, flag, cb_data);
if (starts_with(refname, "refs/tags/"))
return append_tag_ref(refname, oid, flag, cb_data);
return append_ref(refname, oid, 0);
}
static void snarf_refs(int head, int remotes)
{
if (head) {
int orig_cnt = ref_name_cnt;
for_each_ref(append_head_ref, NULL);
sort_ref_range(orig_cnt, ref_name_cnt);
}
if (remotes) {
int orig_cnt = ref_name_cnt;
for_each_ref(append_remote_ref, NULL);
sort_ref_range(orig_cnt, ref_name_cnt);
}
}
static int rev_is_head(const char *head, const char *name,
unsigned char *head_sha1, unsigned char *sha1)
{
if (!head || (head_sha1 && sha1 && !hasheq(head_sha1, sha1)))
return 0;
skip_prefix(head, "refs/heads/", &head);
if (!skip_prefix(name, "refs/heads/", &name))
skip_prefix(name, "heads/", &name);
return !strcmp(head, name);
}
static int show_merge_base(struct commit_list *seen, int num_rev)
{
int all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
int all_revs = all_mask & ~((1u << REV_SHIFT) - 1);
int exit_status = 1;
while (seen) {
struct commit *commit = pop_commit(&seen);
int flags = commit->object.flags & all_mask;
if (!(flags & UNINTERESTING) &&
((flags & all_revs) == all_revs)) {
puts(oid_to_hex(&commit->object.oid));
exit_status = 0;
commit->object.flags |= UNINTERESTING;
}
}
return exit_status;
}
static int show_independent(struct commit **rev,
int num_rev,
char **ref_name,
unsigned int *rev_mask)
{
int i;
for (i = 0; i < num_rev; i++) {
struct commit *commit = rev[i];
unsigned int flag = rev_mask[i];
if (commit->object.flags == flag)
puts(oid_to_hex(&commit->object.oid));
commit->object.flags |= UNINTERESTING;
}
return 0;
}
static void append_one_rev(const char *av)
{
struct object_id revkey;
if (!get_oid(av, &revkey)) {
append_ref(av, &revkey, 0);
return;
}
if (strchr(av, '*') || strchr(av, '?') || strchr(av, '[')) {
/* glob style match */
int saved_matches = ref_name_cnt;
match_ref_pattern = av;
match_ref_slash = count_slashes(av);
for_each_ref(append_matching_ref, NULL);
if (saved_matches == ref_name_cnt &&
ref_name_cnt < MAX_REVS)
error(_("no matching refs with %s"), av);
sort_ref_range(saved_matches, ref_name_cnt);
return;
}
die("bad sha1 reference %s", av);
}
static int git_show_branch_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, "showbranch.default")) {
if (!value)
return config_error_nonbool(var);
/*
* default_arg is now passed to parse_options(), so we need to
* mimic the real argv a bit better.
*/
if (!default_args.argc)
argv_array_push(&default_args, "show-branch");
argv_array_push(&default_args, value);
return 0;
}
if (!strcmp(var, "color.showbranch")) {
showbranch_use_color = git_config_colorbool(var, value);
return 0;
}
return git_color_default_config(var, value, cb);
}
static int omit_in_dense(struct commit *commit, struct commit **rev, int n)
{
/* If the commit is tip of the named branches, do not
* omit it.
* Otherwise, if it is a merge that is reachable from only one
* tip, it is not that interesting.
*/
int i, flag, count;
for (i = 0; i < n; i++)
if (rev[i] == commit)
return 0;
flag = commit->object.flags;
for (i = count = 0; i < n; i++) {
if (flag & (1u << (i + REV_SHIFT)))
count++;
}
if (count == 1)
return 1;
return 0;
}
static int reflog = 0;
static int parse_reflog_param(const struct option *opt, const char *arg,
int unset)
{
char *ep;
const char **base = (const char **)opt->value;
BUG_ON_OPT_NEG(unset);
if (!arg)
arg = "";
reflog = strtoul(arg, &ep, 10);
if (*ep == ',')
*base = ep + 1;
else if (*ep)
return error("unrecognized reflog param '%s'", arg);
else
*base = NULL;
if (reflog <= 0)
reflog = DEFAULT_REFLOG;
return 0;
}
int cmd_show_branch(int ac, const char **av, const char *prefix)
{
struct commit *rev[MAX_REVS], *commit;
char *reflog_msg[MAX_REVS];
struct commit_list *list = NULL, *seen = NULL;
unsigned int rev_mask[MAX_REVS];
int num_rev, i, extra = 0;
int all_heads = 0, all_remotes = 0;
int all_mask, all_revs;
enum rev_sort_order sort_order = REV_SORT_IN_GRAPH_ORDER;
char *head;
struct object_id head_oid;
int merge_base = 0;
int independent = 0;
int no_name = 0;
int sha1_name = 0;
int shown_merge_point = 0;
int with_current_branch = 0;
int head_at = -1;
int topics = 0;
int dense = 1;
const char *reflog_base = NULL;
struct option builtin_show_branch_options[] = {
OPT_BOOL('a', "all", &all_heads,
N_("show remote-tracking and local branches")),
OPT_BOOL('r', "remotes", &all_remotes,
N_("show remote-tracking branches")),
OPT__COLOR(&showbranch_use_color,
N_("color '*!+-' corresponding to the branch")),
{ OPTION_INTEGER, 0, "more", &extra, N_("n"),
N_("show <n> more commits after the common ancestor"),
PARSE_OPT_OPTARG, NULL, (intptr_t)1 },
OPT_SET_INT(0, "list", &extra, N_("synonym to more=-1"), -1),
OPT_BOOL(0, "no-name", &no_name, N_("suppress naming strings")),
OPT_BOOL(0, "current", &with_current_branch,
N_("include the current branch")),
OPT_BOOL(0, "sha1-name", &sha1_name,
N_("name commits with their object names")),
OPT_BOOL(0, "merge-base", &merge_base,
N_("show possible merge bases")),
OPT_BOOL(0, "independent", &independent,
N_("show refs unreachable from any other ref")),
OPT_SET_INT(0, "topo-order", &sort_order,
N_("show commits in topological order"),
REV_SORT_IN_GRAPH_ORDER),
OPT_BOOL(0, "topics", &topics,
N_("show only commits not on the first branch")),
OPT_SET_INT(0, "sparse", &dense,
N_("show merges reachable from only one tip"), 0),
OPT_SET_INT(0, "date-order", &sort_order,
N_("topologically sort, maintaining date order "
"where possible"),
REV_SORT_BY_COMMIT_DATE),
{ OPTION_CALLBACK, 'g', "reflog", &reflog_base, N_("<n>[,<base>]"),
N_("show <n> most recent ref-log entries starting at "
"base"),
PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
parse_reflog_param },
OPT_END()
};
init_commit_name_slab(&name_slab);
git_config(git_show_branch_config, NULL);
/* If nothing is specified, try the default first */
if (ac == 1 && default_args.argc) {
ac = default_args.argc;
av = default_args.argv;
}
ac = parse_options(ac, av, prefix, builtin_show_branch_options,
show_branch_usage, PARSE_OPT_STOP_AT_NON_OPTION);
if (all_heads)
all_remotes = 1;
if (extra || reflog) {
/* "listing" mode is incompatible with
* independent nor merge-base modes.
*/
if (independent || merge_base)
usage_with_options(show_branch_usage,
builtin_show_branch_options);
if (reflog && ((0 < extra) || all_heads || all_remotes))
/*
* Asking for --more in reflog mode does not
* make sense. --list is Ok.
*
* Also --all and --remotes do not make sense either.
*/
die(_("--reflog is incompatible with --all, --remotes, "
"--independent or --merge-base"));
}
/* If nothing is specified, show all branches by default */
if (ac <= topics && all_heads + all_remotes == 0)
all_heads = 1;
if (reflog) {
struct object_id oid;
char *ref;
int base = 0;
unsigned int flags = 0;
if (ac == 0) {
static const char *fake_av[2];
fake_av[0] = resolve_refdup("HEAD",
RESOLVE_REF_READING, &oid,
NULL);
fake_av[1] = NULL;
av = fake_av;
ac = 1;
if (!*av)
die(_("no branches given, and HEAD is not valid"));
}
if (ac != 1)
die(_("--reflog option needs one branch name"));
if (MAX_REVS < reflog)
die(Q_("only %d entry can be shown at one time.",
"only %d entries can be shown at one time.",
MAX_REVS), MAX_REVS);
if (!dwim_ref(*av, strlen(*av), &oid, &ref))
die(_("no such ref %s"), *av);
/* Has the base been specified? */
if (reflog_base) {
char *ep;
base = strtoul(reflog_base, &ep, 10);
if (*ep) {
/* Ah, that is a date spec... */
timestamp_t at;
at = approxidate(reflog_base);
read_ref_at(ref, flags, at, -1, &oid, NULL,
NULL, NULL, &base);
}
}
for (i = 0; i < reflog; i++) {
char *logmsg;
char *nth_desc;
const char *msg;
timestamp_t timestamp;
int tz;
if (read_ref_at(ref, flags, 0, base + i, &oid, &logmsg,
&timestamp, &tz, NULL)) {
reflog = i;
break;
}
msg = strchr(logmsg, '\t');
if (!msg)
msg = "(none)";
else
msg++;
reflog_msg[i] = xstrfmt("(%s) %s",
show_date(timestamp, tz,
DATE_MODE(RELATIVE)),
msg);
free(logmsg);
nth_desc = xstrfmt("%s@{%d}", *av, base+i);
append_ref(nth_desc, &oid, 1);
free(nth_desc);
}
free(ref);
}
else {
while (0 < ac) {
append_one_rev(*av);
ac--; av++;
}
if (all_heads + all_remotes)
snarf_refs(all_heads, all_remotes);
}
head = resolve_refdup("HEAD", RESOLVE_REF_READING,
&head_oid, NULL);
if (with_current_branch && head) {
int has_head = 0;
for (i = 0; !has_head && i < ref_name_cnt; i++) {
/* We are only interested in adding the branch
* HEAD points at.
*/
if (rev_is_head(head,
ref_name[i],
head_oid.hash, NULL))
has_head++;
}
if (!has_head) {
const char *name = head;
skip_prefix(name, "refs/heads/", &name);
append_one_rev(name);
}
}
if (!ref_name_cnt) {
fprintf(stderr, "No revs to be shown.\n");
exit(0);
}
for (num_rev = 0; ref_name[num_rev]; num_rev++) {
struct object_id revkey;
unsigned int flag = 1u << (num_rev + REV_SHIFT);
if (MAX_REVS <= num_rev)
die(Q_("cannot handle more than %d rev.",
"cannot handle more than %d revs.",
MAX_REVS), MAX_REVS);
if (get_oid(ref_name[num_rev], &revkey))
die(_("'%s' is not a valid ref."), ref_name[num_rev]);
commit = lookup_commit_reference(the_repository, &revkey);
if (!commit)
die(_("cannot find commit %s (%s)"),
ref_name[num_rev], oid_to_hex(&revkey));
parse_commit(commit);
mark_seen(commit, &seen);
/* rev#0 uses bit REV_SHIFT, rev#1 uses bit REV_SHIFT+1,
* and so on. REV_SHIFT bits from bit 0 are used for
* internal bookkeeping.
*/
commit->object.flags |= flag;
if (commit->object.flags == flag)
commit_list_insert_by_date(commit, &list);
rev[num_rev] = commit;
}
for (i = 0; i < num_rev; i++)
rev_mask[i] = rev[i]->object.flags;
if (0 <= extra)
join_revs(&list, &seen, num_rev, extra);
commit_list_sort_by_date(&seen);
if (merge_base)
return show_merge_base(seen, num_rev);
if (independent)
return show_independent(rev, num_rev, ref_name, rev_mask);
/* Show list; --more=-1 means list-only */
if (1 < num_rev || extra < 0) {
for (i = 0; i < num_rev; i++) {
int j;
int is_head = rev_is_head(head,
ref_name[i],
head_oid.hash,
rev[i]->object.oid.hash);
if (extra < 0)
printf("%c [%s] ",
is_head ? '*' : ' ', ref_name[i]);
else {
for (j = 0; j < i; j++)
putchar(' ');
printf("%s%c%s [%s] ",
get_color_code(i),
is_head ? '*' : '!',
get_color_reset_code(), ref_name[i]);
}
if (!reflog) {
/* header lines never need name */
show_one_commit(rev[i], 1);
}
else
puts(reflog_msg[i]);
if (is_head)
head_at = i;
}
if (0 <= extra) {
for (i = 0; i < num_rev; i++)
putchar('-');
putchar('\n');
}
}
if (extra < 0)
exit(0);
/* Sort topologically */
sort_in_topological_order(&seen, sort_order);
/* Give names to commits */
if (!sha1_name && !no_name)
name_commits(seen, rev, ref_name, num_rev);
all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
all_revs = all_mask & ~((1u << REV_SHIFT) - 1);
while (seen) {
struct commit *commit = pop_commit(&seen);
int this_flag = commit->object.flags;
int is_merge_point = ((this_flag & all_revs) == all_revs);
shown_merge_point |= is_merge_point;
if (1 < num_rev) {
int is_merge = !!(commit->parents &&
commit->parents->next);
if (topics &&
!is_merge_point &&
(this_flag & (1u << REV_SHIFT)))
continue;
if (dense && is_merge &&
omit_in_dense(commit, rev, num_rev))
continue;
for (i = 0; i < num_rev; i++) {
int mark;
if (!(this_flag & (1u << (i + REV_SHIFT))))
mark = ' ';
else if (is_merge)
mark = '-';
else if (i == head_at)
mark = '*';
else
mark = '+';
printf("%s%c%s",
get_color_code(i),
mark, get_color_reset_code());
}
putchar(' ');
}
show_one_commit(commit, no_name);
if (shown_merge_point && --extra < 0)
break;
}
return 0;
}