diff options
Diffstat (limited to 'third_party/git/builtin/show-branch.c')
| -rw-r--r-- | third_party/git/builtin/show-branch.c | 954 |
1 files changed, 954 insertions, 0 deletions
diff --git a/third_party/git/builtin/show-branch.c b/third_party/git/builtin/show-branch.c new file mode 100644 index 000000000000..8c90cbb18f07 --- /dev/null +++ b/third_party/git/builtin/show-branch.c @@ -0,0 +1,954 @@ +#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, + 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.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(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; + timestamp_t timestamp; + int tz; + + if (read_ref_at(get_main_ref_store(the_repository), + ref, flags, 0, base + i, &oid, &logmsg, + ×tamp, &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, 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; +} |