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-rw-r--r--builtin/show-branch.c960
1 files changed, 960 insertions, 0 deletions
diff --git a/builtin/show-branch.c b/builtin/show-branch.c
new file mode 100644
index 0000000..c013aba
--- /dev/null
+++ b/builtin/show-branch.c
@@ -0,0 +1,960 @@
+#include "cache.h"
+#include "config.h"
+#include "pretty.h"
+#include "refs.h"
+#include "builtin.h"
+#include "color.h"
+#include "strvec.h"
+#include "parse-options.h"
+#include "dir.h"
+#include "commit-slab.h"
+#include "date.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]\n"
+ " [(<rev> | <glob>)...]"),
+ N_("git show-branch (-g | --reflog)[=<n>[,<base>]] [--list] [<ref>]"),
+ NULL
+};
+
+static int showbranch_use_color = -1;
+
+static struct strvec default_args = STRVEC_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 UNUSED, void *cb_data UNUSED)
+{
+ 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 UNUSED, void *cb_data UNUSED)
+{
+ 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 UNUSED, void *cb_data UNUSED)
+{
+ 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)
+{
+ if (!head)
+ 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,
+ 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 (strpbrk(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.nr)
+ strvec_push(&default_args, "show-branch");
+ strvec_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),
+ OPT_CALLBACK_F('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.nr) {
+ ac = default_args.nr;
+ av = default_args.v;
+ }
+
+ 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(_("options '%s' and '%s' cannot be used together"), "--reflog",
+ "--all/--remotes/--independent/--merge-base");
+ }
+
+ if (with_current_branch && reflog)
+ die(_("options '%s' and '%s' cannot be used together"),
+ "--reflog", "--current");
+
+ /* 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, 0))
+ 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(get_main_ref_store(the_repository),
+ ref, flags, at, -1, &oid, NULL,
+ NULL, NULL, &base);
+ }
+ }
+
+ for (i = 0; i < reflog; i++) {
+ char *logmsg;
+ char *nth_desc;
+ const char *msg;
+ char *end;
+ timestamp_t timestamp;
+ int tz;
+
+ if (read_ref_at(get_main_ref_store(the_repository),
+ ref, flags, 0, base + i, &oid, &logmsg,
+ &timestamp, &tz, NULL)) {
+ reflog = i;
+ break;
+ }
+
+ end = strchr(logmsg, '\n');
+ if (end)
+ *end = '\0';
+
+ msg = (*logmsg == '\0') ? "(none)" : logmsg;
+ 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]))
+ 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, 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]) &&
+ oideq(&head_oid, &rev[i]->object.oid);
+ 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 = '+';
+ if (mark == ' ')
+ putchar(mark);
+ else
+ 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;
+}