3 #include "parse-options.h"
11 #include "ref-filter.h"
14 #include "git-compat-util.h"
17 #include "wt-status.h"
18 #include "commit-slab.h"
19 #include "commit-graph.h"
21 static struct ref_msg {
25 const char *ahead_behind;
27 /* Untranslated plumbing messages: */
34 void setup_ref_filter_porcelain_msg(void)
36 msgs.gone = _("gone");
37 msgs.ahead = _("ahead %d");
38 msgs.behind = _("behind %d");
39 msgs.ahead_behind = _("ahead %d, behind %d");
42 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
43 typedef enum { COMPARE_EQUAL, COMPARE_UNEQUAL, COMPARE_NONE } cmp_status;
44 typedef enum { SOURCE_NONE = 0, SOURCE_OBJ, SOURCE_OTHER } info_source;
52 cmp_status cmp_status;
54 unsigned int then_atom_seen : 1,
56 condition_satisfied : 1;
60 enum { R_NORMAL, R_SHORT, R_LSTRIP, R_RSTRIP } option;
65 * An atom is a valid field atom listed below, possibly prefixed with
66 * a "*" to denote deref_tag().
68 * We parse given format string and sort specifiers, and make a list
69 * of properties that we need to extract out of objects. ref_array_item
70 * structure will hold an array of values extracted that can be
71 * indexed with the "atom number", which is an index into this
74 static struct used_atom {
79 char color[COLOR_MAXLEN];
83 RR_REF, RR_TRACK, RR_TRACKSHORT, RR_REMOTE_NAME, RR_REMOTE_REF
85 struct refname_atom refname;
86 unsigned int nobracket : 1, push : 1, push_remote : 1;
89 enum { C_BARE, C_BODY, C_BODY_DEP, C_LINES, C_SIG, C_SUB, C_TRAILERS } option;
90 struct process_trailer_options trailer_opts;
94 cmp_status cmp_status;
98 enum { O_FULL, O_LENGTH, O_SHORT } option;
101 struct refname_atom refname;
105 static int used_atom_cnt, need_tagged, need_symref;
108 * Expand string, append it to strbuf *sb, then return error code ret.
109 * Allow to save few lines of code.
111 static int strbuf_addf_ret(struct strbuf *sb, int ret, const char *fmt, ...)
115 strbuf_vaddf(sb, fmt, ap);
120 static int color_atom_parser(const struct ref_format *format, struct used_atom *atom,
121 const char *color_value, struct strbuf *err)
124 return strbuf_addf_ret(err, -1, _("expected format: %%(color:<color>)"));
125 if (color_parse(color_value, atom->u.color) < 0)
126 return strbuf_addf_ret(err, -1, _("unrecognized color: %%(color:%s)"),
129 * We check this after we've parsed the color, which lets us complain
130 * about syntactically bogus color names even if they won't be used.
132 if (!want_color(format->use_color))
133 color_parse("", atom->u.color);
137 static int refname_atom_parser_internal(struct refname_atom *atom, const char *arg,
138 const char *name, struct strbuf *err)
141 atom->option = R_NORMAL;
142 else if (!strcmp(arg, "short"))
143 atom->option = R_SHORT;
144 else if (skip_prefix(arg, "lstrip=", &arg) ||
145 skip_prefix(arg, "strip=", &arg)) {
146 atom->option = R_LSTRIP;
147 if (strtol_i(arg, 10, &atom->lstrip))
148 return strbuf_addf_ret(err, -1, _("Integer value expected refname:lstrip=%s"), arg);
149 } else if (skip_prefix(arg, "rstrip=", &arg)) {
150 atom->option = R_RSTRIP;
151 if (strtol_i(arg, 10, &atom->rstrip))
152 return strbuf_addf_ret(err, -1, _("Integer value expected refname:rstrip=%s"), arg);
154 return strbuf_addf_ret(err, -1, _("unrecognized %%(%s) argument: %s"), name, arg);
158 static int remote_ref_atom_parser(const struct ref_format *format, struct used_atom *atom,
159 const char *arg, struct strbuf *err)
161 struct string_list params = STRING_LIST_INIT_DUP;
164 if (!strcmp(atom->name, "push") || starts_with(atom->name, "push:"))
165 atom->u.remote_ref.push = 1;
168 atom->u.remote_ref.option = RR_REF;
169 return refname_atom_parser_internal(&atom->u.remote_ref.refname,
170 arg, atom->name, err);
173 atom->u.remote_ref.nobracket = 0;
174 string_list_split(¶ms, arg, ',', -1);
176 for (i = 0; i < params.nr; i++) {
177 const char *s = params.items[i].string;
179 if (!strcmp(s, "track"))
180 atom->u.remote_ref.option = RR_TRACK;
181 else if (!strcmp(s, "trackshort"))
182 atom->u.remote_ref.option = RR_TRACKSHORT;
183 else if (!strcmp(s, "nobracket"))
184 atom->u.remote_ref.nobracket = 1;
185 else if (!strcmp(s, "remotename")) {
186 atom->u.remote_ref.option = RR_REMOTE_NAME;
187 atom->u.remote_ref.push_remote = 1;
188 } else if (!strcmp(s, "remoteref")) {
189 atom->u.remote_ref.option = RR_REMOTE_REF;
190 atom->u.remote_ref.push_remote = 1;
192 atom->u.remote_ref.option = RR_REF;
193 if (refname_atom_parser_internal(&atom->u.remote_ref.refname,
194 arg, atom->name, err)) {
195 string_list_clear(¶ms, 0);
201 string_list_clear(¶ms, 0);
205 static int body_atom_parser(const struct ref_format *format, struct used_atom *atom,
206 const char *arg, struct strbuf *err)
209 return strbuf_addf_ret(err, -1, _("%%(body) does not take arguments"));
210 atom->u.contents.option = C_BODY_DEP;
214 static int subject_atom_parser(const struct ref_format *format, struct used_atom *atom,
215 const char *arg, struct strbuf *err)
218 return strbuf_addf_ret(err, -1, _("%%(subject) does not take arguments"));
219 atom->u.contents.option = C_SUB;
223 static int trailers_atom_parser(const struct ref_format *format, struct used_atom *atom,
224 const char *arg, struct strbuf *err)
226 struct string_list params = STRING_LIST_INIT_DUP;
230 string_list_split(¶ms, arg, ',', -1);
231 for (i = 0; i < params.nr; i++) {
232 const char *s = params.items[i].string;
233 if (!strcmp(s, "unfold"))
234 atom->u.contents.trailer_opts.unfold = 1;
235 else if (!strcmp(s, "only"))
236 atom->u.contents.trailer_opts.only_trailers = 1;
238 strbuf_addf(err, _("unknown %%(trailers) argument: %s"), s);
239 string_list_clear(¶ms, 0);
244 atom->u.contents.option = C_TRAILERS;
245 string_list_clear(¶ms, 0);
249 static int contents_atom_parser(const struct ref_format *format, struct used_atom *atom,
250 const char *arg, struct strbuf *err)
253 atom->u.contents.option = C_BARE;
254 else if (!strcmp(arg, "body"))
255 atom->u.contents.option = C_BODY;
256 else if (!strcmp(arg, "signature"))
257 atom->u.contents.option = C_SIG;
258 else if (!strcmp(arg, "subject"))
259 atom->u.contents.option = C_SUB;
260 else if (skip_prefix(arg, "trailers", &arg)) {
261 skip_prefix(arg, ":", &arg);
262 if (trailers_atom_parser(format, atom, *arg ? arg : NULL, err))
264 } else if (skip_prefix(arg, "lines=", &arg)) {
265 atom->u.contents.option = C_LINES;
266 if (strtoul_ui(arg, 10, &atom->u.contents.nlines))
267 return strbuf_addf_ret(err, -1, _("positive value expected contents:lines=%s"), arg);
269 return strbuf_addf_ret(err, -1, _("unrecognized %%(contents) argument: %s"), arg);
273 static int objectname_atom_parser(const struct ref_format *format, struct used_atom *atom,
274 const char *arg, struct strbuf *err)
277 atom->u.objectname.option = O_FULL;
278 else if (!strcmp(arg, "short"))
279 atom->u.objectname.option = O_SHORT;
280 else if (skip_prefix(arg, "short=", &arg)) {
281 atom->u.objectname.option = O_LENGTH;
282 if (strtoul_ui(arg, 10, &atom->u.objectname.length) ||
283 atom->u.objectname.length == 0)
284 return strbuf_addf_ret(err, -1, _("positive value expected objectname:short=%s"), arg);
285 if (atom->u.objectname.length < MINIMUM_ABBREV)
286 atom->u.objectname.length = MINIMUM_ABBREV;
288 return strbuf_addf_ret(err, -1, _("unrecognized %%(objectname) argument: %s"), arg);
292 static int refname_atom_parser(const struct ref_format *format, struct used_atom *atom,
293 const char *arg, struct strbuf *err)
295 return refname_atom_parser_internal(&atom->u.refname, arg, atom->name, err);
298 static align_type parse_align_position(const char *s)
300 if (!strcmp(s, "right"))
302 else if (!strcmp(s, "middle"))
304 else if (!strcmp(s, "left"))
309 static int align_atom_parser(const struct ref_format *format, struct used_atom *atom,
310 const char *arg, struct strbuf *err)
312 struct align *align = &atom->u.align;
313 struct string_list params = STRING_LIST_INIT_DUP;
315 unsigned int width = ~0U;
318 return strbuf_addf_ret(err, -1, _("expected format: %%(align:<width>,<position>)"));
320 align->position = ALIGN_LEFT;
322 string_list_split(¶ms, arg, ',', -1);
323 for (i = 0; i < params.nr; i++) {
324 const char *s = params.items[i].string;
327 if (skip_prefix(s, "position=", &s)) {
328 position = parse_align_position(s);
330 strbuf_addf(err, _("unrecognized position:%s"), s);
331 string_list_clear(¶ms, 0);
334 align->position = position;
335 } else if (skip_prefix(s, "width=", &s)) {
336 if (strtoul_ui(s, 10, &width)) {
337 strbuf_addf(err, _("unrecognized width:%s"), s);
338 string_list_clear(¶ms, 0);
341 } else if (!strtoul_ui(s, 10, &width))
343 else if ((position = parse_align_position(s)) >= 0)
344 align->position = position;
346 strbuf_addf(err, _("unrecognized %%(align) argument: %s"), s);
347 string_list_clear(¶ms, 0);
353 string_list_clear(¶ms, 0);
354 return strbuf_addf_ret(err, -1, _("positive width expected with the %%(align) atom"));
356 align->width = width;
357 string_list_clear(¶ms, 0);
361 static int if_atom_parser(const struct ref_format *format, struct used_atom *atom,
362 const char *arg, struct strbuf *err)
365 atom->u.if_then_else.cmp_status = COMPARE_NONE;
367 } else if (skip_prefix(arg, "equals=", &atom->u.if_then_else.str)) {
368 atom->u.if_then_else.cmp_status = COMPARE_EQUAL;
369 } else if (skip_prefix(arg, "notequals=", &atom->u.if_then_else.str)) {
370 atom->u.if_then_else.cmp_status = COMPARE_UNEQUAL;
372 return strbuf_addf_ret(err, -1, _("unrecognized %%(if) argument: %s"), arg);
376 static int head_atom_parser(const struct ref_format *format, struct used_atom *atom,
377 const char *arg, struct strbuf *unused_err)
379 atom->u.head = resolve_refdup("HEAD", RESOLVE_REF_READING, NULL, NULL);
387 int (*parser)(const struct ref_format *format, struct used_atom *atom,
388 const char *arg, struct strbuf *err);
390 { "refname", SOURCE_NONE, FIELD_STR, refname_atom_parser },
391 { "objecttype", SOURCE_OTHER },
392 { "objectsize", SOURCE_OTHER, FIELD_ULONG },
393 { "objectname", SOURCE_OTHER, FIELD_STR, objectname_atom_parser },
394 { "tree", SOURCE_OBJ },
395 { "parent", SOURCE_OBJ },
396 { "numparent", SOURCE_OBJ, FIELD_ULONG },
397 { "object", SOURCE_OBJ },
398 { "type", SOURCE_OBJ },
399 { "tag", SOURCE_OBJ },
400 { "author", SOURCE_OBJ },
401 { "authorname", SOURCE_OBJ },
402 { "authoremail", SOURCE_OBJ },
403 { "authordate", SOURCE_OBJ, FIELD_TIME },
404 { "committer", SOURCE_OBJ },
405 { "committername", SOURCE_OBJ },
406 { "committeremail", SOURCE_OBJ },
407 { "committerdate", SOURCE_OBJ, FIELD_TIME },
408 { "tagger", SOURCE_OBJ },
409 { "taggername", SOURCE_OBJ },
410 { "taggeremail", SOURCE_OBJ },
411 { "taggerdate", SOURCE_OBJ, FIELD_TIME },
412 { "creator", SOURCE_OBJ },
413 { "creatordate", SOURCE_OBJ, FIELD_TIME },
414 { "subject", SOURCE_OBJ, FIELD_STR, subject_atom_parser },
415 { "body", SOURCE_OBJ, FIELD_STR, body_atom_parser },
416 { "trailers", SOURCE_OBJ, FIELD_STR, trailers_atom_parser },
417 { "contents", SOURCE_OBJ, FIELD_STR, contents_atom_parser },
418 { "upstream", SOURCE_NONE, FIELD_STR, remote_ref_atom_parser },
419 { "push", SOURCE_NONE, FIELD_STR, remote_ref_atom_parser },
420 { "symref", SOURCE_NONE, FIELD_STR, refname_atom_parser },
421 { "flag", SOURCE_NONE },
422 { "HEAD", SOURCE_NONE, FIELD_STR, head_atom_parser },
423 { "color", SOURCE_NONE, FIELD_STR, color_atom_parser },
424 { "align", SOURCE_NONE, FIELD_STR, align_atom_parser },
425 { "end", SOURCE_NONE },
426 { "if", SOURCE_NONE, FIELD_STR, if_atom_parser },
427 { "then", SOURCE_NONE },
428 { "else", SOURCE_NONE },
431 #define REF_FORMATTING_STATE_INIT { 0, NULL }
433 struct ref_formatting_stack {
434 struct ref_formatting_stack *prev;
435 struct strbuf output;
436 void (*at_end)(struct ref_formatting_stack **stack);
440 struct ref_formatting_state {
442 struct ref_formatting_stack *stack;
447 int (*handler)(struct atom_value *atomv, struct ref_formatting_state *state,
449 uintmax_t value; /* used for sorting when not FIELD_STR */
450 struct used_atom *atom;
454 * Used to parse format string and sort specifiers
456 static int parse_ref_filter_atom(const struct ref_format *format,
457 const char *atom, const char *ep,
465 if (*sp == '*' && sp < ep)
468 return strbuf_addf_ret(err, -1, _("malformed field name: %.*s"),
469 (int)(ep-atom), atom);
471 /* Do we have the atom already used elsewhere? */
472 for (i = 0; i < used_atom_cnt; i++) {
473 int len = strlen(used_atom[i].name);
474 if (len == ep - atom && !memcmp(used_atom[i].name, atom, len))
479 * If the atom name has a colon, strip it and everything after
480 * it off - it specifies the format for this entry, and
481 * shouldn't be used for checking against the valid_atom
484 arg = memchr(sp, ':', ep - sp);
485 atom_len = (arg ? arg : ep) - sp;
487 /* Is the atom a valid one? */
488 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
489 int len = strlen(valid_atom[i].name);
490 if (len == atom_len && !memcmp(valid_atom[i].name, sp, len))
494 if (ARRAY_SIZE(valid_atom) <= i)
495 return strbuf_addf_ret(err, -1, _("unknown field name: %.*s"),
496 (int)(ep-atom), atom);
498 /* Add it in, including the deref prefix */
501 REALLOC_ARRAY(used_atom, used_atom_cnt);
502 used_atom[at].name = xmemdupz(atom, ep - atom);
503 used_atom[at].type = valid_atom[i].cmp_type;
504 used_atom[at].source = valid_atom[i].source;
506 arg = used_atom[at].name + (arg - atom) + 1;
509 * Treat empty sub-arguments list as NULL (i.e.,
510 * "%(atom:)" is equivalent to "%(atom)").
515 memset(&used_atom[at].u, 0, sizeof(used_atom[at].u));
516 if (valid_atom[i].parser && valid_atom[i].parser(format, &used_atom[at], arg, err))
520 if (!strcmp(valid_atom[i].name, "symref"))
525 static void quote_formatting(struct strbuf *s, const char *str, int quote_style)
527 switch (quote_style) {
529 strbuf_addstr(s, str);
532 sq_quote_buf(s, str);
535 perl_quote_buf(s, str);
538 python_quote_buf(s, str);
541 tcl_quote_buf(s, str);
546 static int append_atom(struct atom_value *v, struct ref_formatting_state *state,
547 struct strbuf *unused_err)
550 * Quote formatting is only done when the stack has a single
551 * element. Otherwise quote formatting is done on the
552 * element's entire output strbuf when the %(end) atom is
555 if (!state->stack->prev)
556 quote_formatting(&state->stack->output, v->s, state->quote_style);
558 strbuf_addstr(&state->stack->output, v->s);
562 static void push_stack_element(struct ref_formatting_stack **stack)
564 struct ref_formatting_stack *s = xcalloc(1, sizeof(struct ref_formatting_stack));
566 strbuf_init(&s->output, 0);
571 static void pop_stack_element(struct ref_formatting_stack **stack)
573 struct ref_formatting_stack *current = *stack;
574 struct ref_formatting_stack *prev = current->prev;
577 strbuf_addbuf(&prev->output, ¤t->output);
578 strbuf_release(¤t->output);
583 static void end_align_handler(struct ref_formatting_stack **stack)
585 struct ref_formatting_stack *cur = *stack;
586 struct align *align = (struct align *)cur->at_end_data;
587 struct strbuf s = STRBUF_INIT;
589 strbuf_utf8_align(&s, align->position, align->width, cur->output.buf);
590 strbuf_swap(&cur->output, &s);
594 static int align_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
595 struct strbuf *unused_err)
597 struct ref_formatting_stack *new_stack;
599 push_stack_element(&state->stack);
600 new_stack = state->stack;
601 new_stack->at_end = end_align_handler;
602 new_stack->at_end_data = &atomv->atom->u.align;
606 static void if_then_else_handler(struct ref_formatting_stack **stack)
608 struct ref_formatting_stack *cur = *stack;
609 struct ref_formatting_stack *prev = cur->prev;
610 struct if_then_else *if_then_else = (struct if_then_else *)cur->at_end_data;
612 if (!if_then_else->then_atom_seen)
613 die(_("format: %%(if) atom used without a %%(then) atom"));
615 if (if_then_else->else_atom_seen) {
617 * There is an %(else) atom: we need to drop one state from the
618 * stack, either the %(else) branch if the condition is satisfied, or
619 * the %(then) branch if it isn't.
621 if (if_then_else->condition_satisfied) {
622 strbuf_reset(&cur->output);
623 pop_stack_element(&cur);
625 strbuf_swap(&cur->output, &prev->output);
626 strbuf_reset(&cur->output);
627 pop_stack_element(&cur);
629 } else if (!if_then_else->condition_satisfied) {
631 * No %(else) atom: just drop the %(then) branch if the
632 * condition is not satisfied.
634 strbuf_reset(&cur->output);
641 static int if_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
642 struct strbuf *unused_err)
644 struct ref_formatting_stack *new_stack;
645 struct if_then_else *if_then_else = xcalloc(sizeof(struct if_then_else), 1);
647 if_then_else->str = atomv->atom->u.if_then_else.str;
648 if_then_else->cmp_status = atomv->atom->u.if_then_else.cmp_status;
650 push_stack_element(&state->stack);
651 new_stack = state->stack;
652 new_stack->at_end = if_then_else_handler;
653 new_stack->at_end_data = if_then_else;
657 static int is_empty(const char *s)
667 static int then_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
670 struct ref_formatting_stack *cur = state->stack;
671 struct if_then_else *if_then_else = NULL;
673 if (cur->at_end == if_then_else_handler)
674 if_then_else = (struct if_then_else *)cur->at_end_data;
676 return strbuf_addf_ret(err, -1, _("format: %%(then) atom used without an %%(if) atom"));
677 if (if_then_else->then_atom_seen)
678 return strbuf_addf_ret(err, -1, _("format: %%(then) atom used more than once"));
679 if (if_then_else->else_atom_seen)
680 return strbuf_addf_ret(err, -1, _("format: %%(then) atom used after %%(else)"));
681 if_then_else->then_atom_seen = 1;
683 * If the 'equals' or 'notequals' attribute is used then
684 * perform the required comparison. If not, only non-empty
685 * strings satisfy the 'if' condition.
687 if (if_then_else->cmp_status == COMPARE_EQUAL) {
688 if (!strcmp(if_then_else->str, cur->output.buf))
689 if_then_else->condition_satisfied = 1;
690 } else if (if_then_else->cmp_status == COMPARE_UNEQUAL) {
691 if (strcmp(if_then_else->str, cur->output.buf))
692 if_then_else->condition_satisfied = 1;
693 } else if (cur->output.len && !is_empty(cur->output.buf))
694 if_then_else->condition_satisfied = 1;
695 strbuf_reset(&cur->output);
699 static int else_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
702 struct ref_formatting_stack *prev = state->stack;
703 struct if_then_else *if_then_else = NULL;
705 if (prev->at_end == if_then_else_handler)
706 if_then_else = (struct if_then_else *)prev->at_end_data;
708 return strbuf_addf_ret(err, -1, _("format: %%(else) atom used without an %%(if) atom"));
709 if (!if_then_else->then_atom_seen)
710 return strbuf_addf_ret(err, -1, _("format: %%(else) atom used without a %%(then) atom"));
711 if (if_then_else->else_atom_seen)
712 return strbuf_addf_ret(err, -1, _("format: %%(else) atom used more than once"));
713 if_then_else->else_atom_seen = 1;
714 push_stack_element(&state->stack);
715 state->stack->at_end_data = prev->at_end_data;
716 state->stack->at_end = prev->at_end;
720 static int end_atom_handler(struct atom_value *atomv, struct ref_formatting_state *state,
723 struct ref_formatting_stack *current = state->stack;
724 struct strbuf s = STRBUF_INIT;
726 if (!current->at_end)
727 return strbuf_addf_ret(err, -1, _("format: %%(end) atom used without corresponding atom"));
728 current->at_end(&state->stack);
730 /* Stack may have been popped within at_end(), hence reset the current pointer */
731 current = state->stack;
734 * Perform quote formatting when the stack element is that of
735 * a supporting atom. If nested then perform quote formatting
736 * only on the topmost supporting atom.
738 if (!current->prev->prev) {
739 quote_formatting(&s, current->output.buf, state->quote_style);
740 strbuf_swap(¤t->output, &s);
743 pop_stack_element(&state->stack);
748 * In a format string, find the next occurrence of %(atom).
750 static const char *find_next(const char *cp)
755 * %( is the start of an atom;
756 * %% is a quoted per-cent.
760 else if (cp[1] == '%')
761 cp++; /* skip over two % */
762 /* otherwise this is a singleton, literal % */
770 * Make sure the format string is well formed, and parse out
773 int verify_ref_format(struct ref_format *format)
777 format->need_color_reset_at_eol = 0;
778 for (cp = format->format; *cp && (sp = find_next(cp)); ) {
779 struct strbuf err = STRBUF_INIT;
780 const char *color, *ep = strchr(sp, ')');
784 return error(_("malformed format string %s"), sp);
785 /* sp points at "%(" and ep points at the closing ")" */
786 at = parse_ref_filter_atom(format, sp + 2, ep, &err);
791 if (skip_prefix(used_atom[at].name, "color:", &color))
792 format->need_color_reset_at_eol = !!strcmp(color, "reset");
793 strbuf_release(&err);
795 if (format->need_color_reset_at_eol && !want_color(format->use_color))
796 format->need_color_reset_at_eol = 0;
800 static int grab_objectname(const char *name, const struct object_id *oid,
801 struct atom_value *v, struct used_atom *atom)
803 if (starts_with(name, "objectname")) {
804 if (atom->u.objectname.option == O_SHORT) {
805 v->s = xstrdup(find_unique_abbrev(oid, DEFAULT_ABBREV));
807 } else if (atom->u.objectname.option == O_FULL) {
808 v->s = xstrdup(oid_to_hex(oid));
810 } else if (atom->u.objectname.option == O_LENGTH) {
811 v->s = xstrdup(find_unique_abbrev(oid, atom->u.objectname.length));
814 BUG("unknown %%(objectname) option");
819 /* See grab_values */
820 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
824 for (i = 0; i < used_atom_cnt; i++) {
825 const char *name = used_atom[i].name;
826 struct atom_value *v = &val[i];
827 if (!!deref != (*name == '*'))
831 if (!strcmp(name, "objecttype"))
832 v->s = type_name(obj->type);
833 else if (!strcmp(name, "objectsize")) {
835 v->s = xstrfmt("%lu", sz);
838 grab_objectname(name, &obj->oid, v, &used_atom[i]);
842 /* See grab_values */
843 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
846 struct tag *tag = (struct tag *) obj;
848 for (i = 0; i < used_atom_cnt; i++) {
849 const char *name = used_atom[i].name;
850 struct atom_value *v = &val[i];
851 if (!!deref != (*name == '*'))
855 if (!strcmp(name, "tag"))
857 else if (!strcmp(name, "type") && tag->tagged)
858 v->s = type_name(tag->tagged->type);
859 else if (!strcmp(name, "object") && tag->tagged)
860 v->s = xstrdup(oid_to_hex(&tag->tagged->oid));
864 /* See grab_values */
865 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
868 struct commit *commit = (struct commit *) obj;
870 for (i = 0; i < used_atom_cnt; i++) {
871 const char *name = used_atom[i].name;
872 struct atom_value *v = &val[i];
873 if (!!deref != (*name == '*'))
877 if (!strcmp(name, "tree")) {
878 v->s = xstrdup(oid_to_hex(get_commit_tree_oid(commit)));
880 else if (!strcmp(name, "numparent")) {
881 v->value = commit_list_count(commit->parents);
882 v->s = xstrfmt("%lu", (unsigned long)v->value);
884 else if (!strcmp(name, "parent")) {
885 struct commit_list *parents;
886 struct strbuf s = STRBUF_INIT;
887 for (parents = commit->parents; parents; parents = parents->next) {
888 struct commit *parent = parents->item;
889 if (parents != commit->parents)
890 strbuf_addch(&s, ' ');
891 strbuf_addstr(&s, oid_to_hex(&parent->object.oid));
893 v->s = strbuf_detach(&s, NULL);
898 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
902 if (!strncmp(buf, who, wholen) &&
904 return buf + wholen + 1;
905 eol = strchr(buf, '\n');
910 return ""; /* end of header */
916 static const char *copy_line(const char *buf)
918 const char *eol = strchrnul(buf, '\n');
919 return xmemdupz(buf, eol - buf);
922 static const char *copy_name(const char *buf)
925 for (cp = buf; *cp && *cp != '\n'; cp++) {
926 if (!strncmp(cp, " <", 2))
927 return xmemdupz(buf, cp - buf);
932 static const char *copy_email(const char *buf)
934 const char *email = strchr(buf, '<');
938 eoemail = strchr(email, '>');
941 return xmemdupz(email, eoemail + 1 - email);
944 static char *copy_subject(const char *buf, unsigned long len)
946 char *r = xmemdupz(buf, len);
949 for (i = 0; i < len; i++)
956 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
958 const char *eoemail = strstr(buf, "> ");
960 timestamp_t timestamp;
962 struct date_mode date_mode = { DATE_NORMAL };
966 * We got here because atomname ends in "date" or "date<something>";
967 * it's not possible that <something> is not ":<format>" because
968 * parse_ref_filter_atom() wouldn't have allowed it, so we can assume that no
969 * ":" means no format is specified, and use the default.
971 formatp = strchr(atomname, ':');
972 if (formatp != NULL) {
974 parse_date_format(formatp, &date_mode);
979 timestamp = parse_timestamp(eoemail + 2, &zone, 10);
980 if (timestamp == TIME_MAX)
982 tz = strtol(zone, NULL, 10);
983 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
985 v->s = xstrdup(show_date(timestamp, tz, &date_mode));
986 v->value = timestamp;
993 /* See grab_values */
994 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
997 int wholen = strlen(who);
998 const char *wholine = NULL;
1000 for (i = 0; i < used_atom_cnt; i++) {
1001 const char *name = used_atom[i].name;
1002 struct atom_value *v = &val[i];
1003 if (!!deref != (*name == '*'))
1007 if (strncmp(who, name, wholen))
1009 if (name[wholen] != 0 &&
1010 strcmp(name + wholen, "name") &&
1011 strcmp(name + wholen, "email") &&
1012 !starts_with(name + wholen, "date"))
1015 wholine = find_wholine(who, wholen, buf, sz);
1017 return; /* no point looking for it */
1018 if (name[wholen] == 0)
1019 v->s = copy_line(wholine);
1020 else if (!strcmp(name + wholen, "name"))
1021 v->s = copy_name(wholine);
1022 else if (!strcmp(name + wholen, "email"))
1023 v->s = copy_email(wholine);
1024 else if (starts_with(name + wholen, "date"))
1025 grab_date(wholine, v, name);
1029 * For a tag or a commit object, if "creator" or "creatordate" is
1030 * requested, do something special.
1032 if (strcmp(who, "tagger") && strcmp(who, "committer"))
1033 return; /* "author" for commit object is not wanted */
1035 wholine = find_wholine(who, wholen, buf, sz);
1038 for (i = 0; i < used_atom_cnt; i++) {
1039 const char *name = used_atom[i].name;
1040 struct atom_value *v = &val[i];
1041 if (!!deref != (*name == '*'))
1046 if (starts_with(name, "creatordate"))
1047 grab_date(wholine, v, name);
1048 else if (!strcmp(name, "creator"))
1049 v->s = copy_line(wholine);
1053 static void find_subpos(const char *buf, unsigned long sz,
1054 const char **sub, unsigned long *sublen,
1055 const char **body, unsigned long *bodylen,
1056 unsigned long *nonsiglen,
1057 const char **sig, unsigned long *siglen)
1060 /* skip past header until we hit empty line */
1061 while (*buf && *buf != '\n') {
1062 eol = strchrnul(buf, '\n');
1067 /* skip any empty lines */
1068 while (*buf == '\n')
1071 /* parse signature first; we might not even have a subject line */
1072 *sig = buf + parse_signature(buf, strlen(buf));
1073 *siglen = strlen(*sig);
1075 /* subject is first non-empty line */
1077 /* subject goes to first empty line */
1078 while (buf < *sig && *buf && *buf != '\n') {
1079 eol = strchrnul(buf, '\n');
1084 *sublen = buf - *sub;
1085 /* drop trailing newline, if present */
1086 if (*sublen && (*sub)[*sublen - 1] == '\n')
1089 /* skip any empty lines */
1090 while (*buf == '\n')
1093 *bodylen = strlen(buf);
1094 *nonsiglen = *sig - buf;
1098 * If 'lines' is greater than 0, append that many lines from the given
1099 * 'buf' of length 'size' to the given strbuf.
1101 static void append_lines(struct strbuf *out, const char *buf, unsigned long size, int lines)
1104 const char *sp, *eol;
1109 for (i = 0; i < lines && sp < buf + size; i++) {
1111 strbuf_addstr(out, "\n ");
1112 eol = memchr(sp, '\n', size - (sp - buf));
1113 len = eol ? eol - sp : size - (sp - buf);
1114 strbuf_add(out, sp, len);
1121 /* See grab_values */
1122 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
1125 const char *subpos = NULL, *bodypos = NULL, *sigpos = NULL;
1126 unsigned long sublen = 0, bodylen = 0, nonsiglen = 0, siglen = 0;
1128 for (i = 0; i < used_atom_cnt; i++) {
1129 struct used_atom *atom = &used_atom[i];
1130 const char *name = atom->name;
1131 struct atom_value *v = &val[i];
1132 if (!!deref != (*name == '*'))
1136 if (strcmp(name, "subject") &&
1137 strcmp(name, "body") &&
1138 !starts_with(name, "trailers") &&
1139 !starts_with(name, "contents"))
1142 find_subpos(buf, sz,
1144 &bodypos, &bodylen, &nonsiglen,
1147 if (atom->u.contents.option == C_SUB)
1148 v->s = copy_subject(subpos, sublen);
1149 else if (atom->u.contents.option == C_BODY_DEP)
1150 v->s = xmemdupz(bodypos, bodylen);
1151 else if (atom->u.contents.option == C_BODY)
1152 v->s = xmemdupz(bodypos, nonsiglen);
1153 else if (atom->u.contents.option == C_SIG)
1154 v->s = xmemdupz(sigpos, siglen);
1155 else if (atom->u.contents.option == C_LINES) {
1156 struct strbuf s = STRBUF_INIT;
1157 const char *contents_end = bodylen + bodypos - siglen;
1159 /* Size is the length of the message after removing the signature */
1160 append_lines(&s, subpos, contents_end - subpos, atom->u.contents.nlines);
1161 v->s = strbuf_detach(&s, NULL);
1162 } else if (atom->u.contents.option == C_TRAILERS) {
1163 struct strbuf s = STRBUF_INIT;
1165 /* Format the trailer info according to the trailer_opts given */
1166 format_trailers_from_commit(&s, subpos, &atom->u.contents.trailer_opts);
1168 v->s = strbuf_detach(&s, NULL);
1169 } else if (atom->u.contents.option == C_BARE)
1170 v->s = xstrdup(subpos);
1175 * We want to have empty print-string for field requests
1176 * that do not apply (e.g. "authordate" for a tag object)
1178 static void fill_missing_values(struct atom_value *val)
1181 for (i = 0; i < used_atom_cnt; i++) {
1182 struct atom_value *v = &val[i];
1189 * val is a list of atom_value to hold returned values. Extract
1190 * the values for atoms in used_atom array out of (obj, buf, sz).
1191 * when deref is false, (obj, buf, sz) is the object that is
1192 * pointed at by the ref itself; otherwise it is the object the
1193 * ref (which is a tag) refers to.
1195 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
1197 grab_common_values(val, deref, obj, buf, sz);
1198 switch (obj->type) {
1200 grab_tag_values(val, deref, obj, buf, sz);
1201 grab_sub_body_contents(val, deref, obj, buf, sz);
1202 grab_person("tagger", val, deref, obj, buf, sz);
1205 grab_commit_values(val, deref, obj, buf, sz);
1206 grab_sub_body_contents(val, deref, obj, buf, sz);
1207 grab_person("author", val, deref, obj, buf, sz);
1208 grab_person("committer", val, deref, obj, buf, sz);
1211 /* grab_tree_values(val, deref, obj, buf, sz); */
1214 /* grab_blob_values(val, deref, obj, buf, sz); */
1217 die("Eh? Object of type %d?", obj->type);
1221 static inline char *copy_advance(char *dst, const char *src)
1228 static const char *lstrip_ref_components(const char *refname, int len)
1230 long remaining = len;
1231 const char *start = refname;
1235 const char *p = refname;
1237 /* Find total no of '/' separated path-components */
1238 for (i = 0; p[i]; p[i] == '/' ? i++ : *p++)
1241 * The number of components we need to strip is now
1242 * the total minus the components to be left (Plus one
1243 * because we count the number of '/', but the number
1244 * of components is one more than the no of '/').
1246 remaining = i + len + 1;
1249 while (remaining > 0) {
1262 static const char *rstrip_ref_components(const char *refname, int len)
1264 long remaining = len;
1265 char *start = xstrdup(refname);
1269 const char *p = refname;
1271 /* Find total no of '/' separated path-components */
1272 for (i = 0; p[i]; p[i] == '/' ? i++ : *p++)
1275 * The number of components we need to strip is now
1276 * the total minus the components to be left (Plus one
1277 * because we count the number of '/', but the number
1278 * of components is one more than the no of '/').
1280 remaining = i + len + 1;
1283 while (remaining-- > 0) {
1284 char *p = strrchr(start, '/');
1293 static const char *show_ref(struct refname_atom *atom, const char *refname)
1295 if (atom->option == R_SHORT)
1296 return shorten_unambiguous_ref(refname, warn_ambiguous_refs);
1297 else if (atom->option == R_LSTRIP)
1298 return lstrip_ref_components(refname, atom->lstrip);
1299 else if (atom->option == R_RSTRIP)
1300 return rstrip_ref_components(refname, atom->rstrip);
1305 static void fill_remote_ref_details(struct used_atom *atom, const char *refname,
1306 struct branch *branch, const char **s)
1308 int num_ours, num_theirs;
1309 if (atom->u.remote_ref.option == RR_REF)
1310 *s = show_ref(&atom->u.remote_ref.refname, refname);
1311 else if (atom->u.remote_ref.option == RR_TRACK) {
1312 if (stat_tracking_info(branch, &num_ours, &num_theirs,
1313 NULL, AHEAD_BEHIND_FULL) < 0) {
1314 *s = xstrdup(msgs.gone);
1315 } else if (!num_ours && !num_theirs)
1318 *s = xstrfmt(msgs.behind, num_theirs);
1319 else if (!num_theirs)
1320 *s = xstrfmt(msgs.ahead, num_ours);
1322 *s = xstrfmt(msgs.ahead_behind,
1323 num_ours, num_theirs);
1324 if (!atom->u.remote_ref.nobracket && *s[0]) {
1325 const char *to_free = *s;
1326 *s = xstrfmt("[%s]", *s);
1327 free((void *)to_free);
1329 } else if (atom->u.remote_ref.option == RR_TRACKSHORT) {
1330 if (stat_tracking_info(branch, &num_ours, &num_theirs,
1331 NULL, AHEAD_BEHIND_FULL) < 0)
1334 if (!num_ours && !num_theirs)
1338 else if (!num_theirs)
1342 } else if (atom->u.remote_ref.option == RR_REMOTE_NAME) {
1344 const char *remote = atom->u.remote_ref.push ?
1345 pushremote_for_branch(branch, &explicit) :
1346 remote_for_branch(branch, &explicit);
1348 *s = xstrdup(remote);
1351 } else if (atom->u.remote_ref.option == RR_REMOTE_REF) {
1355 merge = remote_ref_for_branch(branch, atom->u.remote_ref.push,
1358 *s = xstrdup(merge);
1362 BUG("unhandled RR_* enum");
1365 char *get_head_description(void)
1367 struct strbuf desc = STRBUF_INIT;
1368 struct wt_status_state state;
1369 memset(&state, 0, sizeof(state));
1370 wt_status_get_state(&state, 1);
1371 if (state.rebase_in_progress ||
1372 state.rebase_interactive_in_progress) {
1374 strbuf_addf(&desc, _("(no branch, rebasing %s)"),
1377 strbuf_addf(&desc, _("(no branch, rebasing detached HEAD %s)"),
1378 state.detached_from);
1379 } else if (state.bisect_in_progress)
1380 strbuf_addf(&desc, _("(no branch, bisect started on %s)"),
1382 else if (state.detached_from) {
1383 if (state.detached_at)
1385 * TRANSLATORS: make sure this matches "HEAD
1386 * detached at " in wt-status.c
1388 strbuf_addf(&desc, _("(HEAD detached at %s)"),
1389 state.detached_from);
1392 * TRANSLATORS: make sure this matches "HEAD
1393 * detached from " in wt-status.c
1395 strbuf_addf(&desc, _("(HEAD detached from %s)"),
1396 state.detached_from);
1399 strbuf_addstr(&desc, _("(no branch)"));
1402 free(state.detached_from);
1403 return strbuf_detach(&desc, NULL);
1406 static const char *get_symref(struct used_atom *atom, struct ref_array_item *ref)
1411 return show_ref(&atom->u.refname, ref->symref);
1414 static const char *get_refname(struct used_atom *atom, struct ref_array_item *ref)
1416 if (ref->kind & FILTER_REFS_DETACHED_HEAD)
1417 return get_head_description();
1418 return show_ref(&atom->u.refname, ref->refname);
1421 static int get_object(struct ref_array_item *ref, const struct object_id *oid,
1422 int deref, struct object **obj, struct strbuf *err)
1424 /* parse_object_buffer() will set eaten to 0 if free() will be needed */
1428 enum object_type type;
1429 void *buf = read_object_file(oid, &type, &size);
1431 ret = strbuf_addf_ret(err, -1, _("missing object %s for %s"),
1432 oid_to_hex(oid), ref->refname);
1434 *obj = parse_object_buffer(oid, type, size, buf, &eaten);
1436 ret = strbuf_addf_ret(err, -1, _("parse_object_buffer failed on %s for %s"),
1437 oid_to_hex(oid), ref->refname);
1439 grab_values(ref->value, deref, *obj, buf, size);
1447 * Parse the object referred by ref, and grab needed value.
1449 static int populate_value(struct ref_array_item *ref, struct strbuf *err)
1453 const struct object_id *tagged;
1455 ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
1457 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
1458 ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
1464 /* Fill in specials first */
1465 for (i = 0; i < used_atom_cnt; i++) {
1466 struct used_atom *atom = &used_atom[i];
1467 const char *name = used_atom[i].name;
1468 struct atom_value *v = &ref->value[i];
1470 const char *refname;
1471 struct branch *branch = NULL;
1473 v->handler = append_atom;
1481 if (starts_with(name, "refname"))
1482 refname = get_refname(atom, ref);
1483 else if (starts_with(name, "symref"))
1484 refname = get_symref(atom, ref);
1485 else if (starts_with(name, "upstream")) {
1486 const char *branch_name;
1488 /* only local branches may have an upstream */
1489 if (!skip_prefix(ref->refname, "refs/heads/",
1492 branch = branch_get(branch_name);
1494 refname = branch_get_upstream(branch, NULL);
1496 fill_remote_ref_details(atom, refname, branch, &v->s);
1498 } else if (atom->u.remote_ref.push) {
1499 const char *branch_name;
1501 if (!skip_prefix(ref->refname, "refs/heads/",
1504 branch = branch_get(branch_name);
1506 if (atom->u.remote_ref.push_remote)
1509 refname = branch_get_push(branch, NULL);
1513 fill_remote_ref_details(atom, refname, branch, &v->s);
1515 } else if (starts_with(name, "color:")) {
1516 v->s = atom->u.color;
1518 } else if (!strcmp(name, "flag")) {
1519 char buf[256], *cp = buf;
1520 if (ref->flag & REF_ISSYMREF)
1521 cp = copy_advance(cp, ",symref");
1522 if (ref->flag & REF_ISPACKED)
1523 cp = copy_advance(cp, ",packed");
1528 v->s = xstrdup(buf + 1);
1531 } else if (!deref && grab_objectname(name, &ref->objectname, v, atom)) {
1533 } else if (!strcmp(name, "HEAD")) {
1534 if (atom->u.head && !strcmp(ref->refname, atom->u.head))
1539 } else if (starts_with(name, "align")) {
1540 v->handler = align_atom_handler;
1543 } else if (!strcmp(name, "end")) {
1544 v->handler = end_atom_handler;
1547 } else if (starts_with(name, "if")) {
1550 if (skip_prefix(name, "if:", &s))
1552 v->handler = if_atom_handler;
1554 } else if (!strcmp(name, "then")) {
1555 v->handler = then_atom_handler;
1558 } else if (!strcmp(name, "else")) {
1559 v->handler = else_atom_handler;
1568 v->s = xstrfmt("%s^{}", refname);
1571 for (i = 0; i < used_atom_cnt; i++) {
1572 struct atom_value *v = &ref->value[i];
1576 if (used_atom_cnt <= i)
1579 if (get_object(ref, &ref->objectname, 0, &obj, err))
1583 * If there is no atom that wants to know about tagged
1584 * object, we are done.
1586 if (!need_tagged || (obj->type != OBJ_TAG))
1590 * If it is a tag object, see if we use a value that derefs
1591 * the object, and if we do grab the object it refers to.
1593 tagged = &((struct tag *)obj)->tagged->oid;
1596 * NEEDSWORK: This derefs tag only once, which
1597 * is good to deal with chains of trust, but
1598 * is not consistent with what deref_tag() does
1599 * which peels the onion to the core.
1601 return get_object(ref, tagged, 1, &obj, err);
1605 * Given a ref, return the value for the atom. This lazily gets value
1606 * out of the object by calling populate value.
1608 static int get_ref_atom_value(struct ref_array_item *ref, int atom,
1609 struct atom_value **v, struct strbuf *err)
1612 if (populate_value(ref, err))
1614 fill_missing_values(ref->value);
1616 *v = &ref->value[atom];
1621 * Unknown has to be "0" here, because that's the default value for
1622 * contains_cache slab entries that have not yet been assigned.
1624 enum contains_result {
1625 CONTAINS_UNKNOWN = 0,
1630 define_commit_slab(contains_cache, enum contains_result);
1632 struct ref_filter_cbdata {
1633 struct ref_array *array;
1634 struct ref_filter *filter;
1635 struct contains_cache contains_cache;
1636 struct contains_cache no_contains_cache;
1640 * Mimicking the real stack, this stack lives on the heap, avoiding stack
1643 * At each recursion step, the stack items points to the commits whose
1644 * ancestors are to be inspected.
1646 struct contains_stack {
1648 struct contains_stack_entry {
1649 struct commit *commit;
1650 struct commit_list *parents;
1654 static int in_commit_list(const struct commit_list *want, struct commit *c)
1656 for (; want; want = want->next)
1657 if (!oidcmp(&want->item->object.oid, &c->object.oid))
1663 * Test whether the candidate is contained in the list.
1664 * Do not recurse to find out, though, but return -1 if inconclusive.
1666 static enum contains_result contains_test(struct commit *candidate,
1667 const struct commit_list *want,
1668 struct contains_cache *cache,
1671 enum contains_result *cached = contains_cache_at(cache, candidate);
1673 /* If we already have the answer cached, return that. */
1678 if (in_commit_list(want, candidate)) {
1679 *cached = CONTAINS_YES;
1680 return CONTAINS_YES;
1683 /* Otherwise, we don't know; prepare to recurse */
1684 parse_commit_or_die(candidate);
1686 if (candidate->generation < cutoff)
1689 return CONTAINS_UNKNOWN;
1692 static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
1694 ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc);
1695 contains_stack->contains_stack[contains_stack->nr].commit = candidate;
1696 contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents;
1699 static enum contains_result contains_tag_algo(struct commit *candidate,
1700 const struct commit_list *want,
1701 struct contains_cache *cache)
1703 struct contains_stack contains_stack = { 0, 0, NULL };
1704 enum contains_result result;
1705 uint32_t cutoff = GENERATION_NUMBER_INFINITY;
1706 const struct commit_list *p;
1708 for (p = want; p; p = p->next) {
1709 struct commit *c = p->item;
1710 load_commit_graph_info(c);
1711 if (c->generation < cutoff)
1712 cutoff = c->generation;
1715 result = contains_test(candidate, want, cache, cutoff);
1716 if (result != CONTAINS_UNKNOWN)
1719 push_to_contains_stack(candidate, &contains_stack);
1720 while (contains_stack.nr) {
1721 struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1];
1722 struct commit *commit = entry->commit;
1723 struct commit_list *parents = entry->parents;
1726 *contains_cache_at(cache, commit) = CONTAINS_NO;
1727 contains_stack.nr--;
1730 * If we just popped the stack, parents->item has been marked,
1731 * therefore contains_test will return a meaningful yes/no.
1733 else switch (contains_test(parents->item, want, cache, cutoff)) {
1735 *contains_cache_at(cache, commit) = CONTAINS_YES;
1736 contains_stack.nr--;
1739 entry->parents = parents->next;
1741 case CONTAINS_UNKNOWN:
1742 push_to_contains_stack(parents->item, &contains_stack);
1746 free(contains_stack.contains_stack);
1747 return contains_test(candidate, want, cache, cutoff);
1750 static int commit_contains(struct ref_filter *filter, struct commit *commit,
1751 struct commit_list *list, struct contains_cache *cache)
1753 if (filter->with_commit_tag_algo)
1754 return contains_tag_algo(commit, list, cache) == CONTAINS_YES;
1755 return is_descendant_of(commit, list);
1759 * Return 1 if the refname matches one of the patterns, otherwise 0.
1760 * A pattern can be a literal prefix (e.g. a refname "refs/heads/master"
1761 * matches a pattern "refs/heads/mas") or a wildcard (e.g. the same ref
1762 * matches "refs/heads/mas*", too).
1764 static int match_pattern(const struct ref_filter *filter, const char *refname)
1766 const char **patterns = filter->name_patterns;
1769 if (filter->ignore_case)
1770 flags |= WM_CASEFOLD;
1773 * When no '--format' option is given we need to skip the prefix
1774 * for matching refs of tags and branches.
1776 (void)(skip_prefix(refname, "refs/tags/", &refname) ||
1777 skip_prefix(refname, "refs/heads/", &refname) ||
1778 skip_prefix(refname, "refs/remotes/", &refname) ||
1779 skip_prefix(refname, "refs/", &refname));
1781 for (; *patterns; patterns++) {
1782 if (!wildmatch(*patterns, refname, flags))
1789 * Return 1 if the refname matches one of the patterns, otherwise 0.
1790 * A pattern can be path prefix (e.g. a refname "refs/heads/master"
1791 * matches a pattern "refs/heads/" but not "refs/heads/m") or a
1792 * wildcard (e.g. the same ref matches "refs/heads/m*", too).
1794 static int match_name_as_path(const struct ref_filter *filter, const char *refname)
1796 const char **pattern = filter->name_patterns;
1797 int namelen = strlen(refname);
1798 unsigned flags = WM_PATHNAME;
1800 if (filter->ignore_case)
1801 flags |= WM_CASEFOLD;
1803 for (; *pattern; pattern++) {
1804 const char *p = *pattern;
1805 int plen = strlen(p);
1807 if ((plen <= namelen) &&
1808 !strncmp(refname, p, plen) &&
1809 (refname[plen] == '\0' ||
1810 refname[plen] == '/' ||
1813 if (!wildmatch(p, refname, WM_PATHNAME))
1819 /* Return 1 if the refname matches one of the patterns, otherwise 0. */
1820 static int filter_pattern_match(struct ref_filter *filter, const char *refname)
1822 if (!*filter->name_patterns)
1823 return 1; /* No pattern always matches */
1824 if (filter->match_as_path)
1825 return match_name_as_path(filter, refname);
1826 return match_pattern(filter, refname);
1830 * Find the longest prefix of pattern we can pass to
1831 * `for_each_fullref_in()`, namely the part of pattern preceding the
1832 * first glob character. (Note that `for_each_fullref_in()` is
1833 * perfectly happy working with a prefix that doesn't end at a
1834 * pathname component boundary.)
1836 static void find_longest_prefix(struct strbuf *out, const char *pattern)
1840 for (p = pattern; *p && !is_glob_special(*p); p++)
1843 strbuf_add(out, pattern, p - pattern);
1847 * This is the same as for_each_fullref_in(), but it tries to iterate
1848 * only over the patterns we'll care about. Note that it _doesn't_ do a full
1849 * pattern match, so the callback still has to match each ref individually.
1851 static int for_each_fullref_in_pattern(struct ref_filter *filter,
1856 struct strbuf prefix = STRBUF_INIT;
1859 if (!filter->match_as_path) {
1861 * in this case, the patterns are applied after
1862 * prefixes like "refs/heads/" etc. are stripped off,
1863 * so we have to look at everything:
1865 return for_each_fullref_in("", cb, cb_data, broken);
1868 if (!filter->name_patterns[0]) {
1869 /* no patterns; we have to look at everything */
1870 return for_each_fullref_in("", cb, cb_data, broken);
1873 if (filter->name_patterns[1]) {
1875 * multiple patterns; in theory this could still work as long
1876 * as the patterns are disjoint. We'd just make multiple calls
1877 * to for_each_ref(). But if they're not disjoint, we'd end up
1878 * reporting the same ref multiple times. So let's punt on that
1881 return for_each_fullref_in("", cb, cb_data, broken);
1884 find_longest_prefix(&prefix, filter->name_patterns[0]);
1886 ret = for_each_fullref_in(prefix.buf, cb, cb_data, broken);
1887 strbuf_release(&prefix);
1892 * Given a ref (sha1, refname), check if the ref belongs to the array
1893 * of sha1s. If the given ref is a tag, check if the given tag points
1894 * at one of the sha1s in the given sha1 array.
1895 * the given sha1_array.
1897 * 1. Only a single level of inderection is obtained, we might want to
1898 * change this to account for multiple levels (e.g. annotated tags
1899 * pointing to annotated tags pointing to a commit.)
1900 * 2. As the refs are cached we might know what refname peels to without
1901 * the need to parse the object via parse_object(). peel_ref() might be a
1902 * more efficient alternative to obtain the pointee.
1904 static const struct object_id *match_points_at(struct oid_array *points_at,
1905 const struct object_id *oid,
1906 const char *refname)
1908 const struct object_id *tagged_oid = NULL;
1911 if (oid_array_lookup(points_at, oid) >= 0)
1913 obj = parse_object(oid);
1915 die(_("malformed object at '%s'"), refname);
1916 if (obj->type == OBJ_TAG)
1917 tagged_oid = &((struct tag *)obj)->tagged->oid;
1918 if (tagged_oid && oid_array_lookup(points_at, tagged_oid) >= 0)
1924 * Allocate space for a new ref_array_item and copy the name and oid to it.
1926 * Callers can then fill in other struct members at their leisure.
1928 static struct ref_array_item *new_ref_array_item(const char *refname,
1929 const struct object_id *oid)
1931 struct ref_array_item *ref;
1933 FLEX_ALLOC_STR(ref, refname, refname);
1934 oidcpy(&ref->objectname, oid);
1939 struct ref_array_item *ref_array_push(struct ref_array *array,
1940 const char *refname,
1941 const struct object_id *oid)
1943 struct ref_array_item *ref = new_ref_array_item(refname, oid);
1945 ALLOC_GROW(array->items, array->nr + 1, array->alloc);
1946 array->items[array->nr++] = ref;
1951 static int ref_kind_from_refname(const char *refname)
1959 { "refs/heads/" , FILTER_REFS_BRANCHES },
1960 { "refs/remotes/" , FILTER_REFS_REMOTES },
1961 { "refs/tags/", FILTER_REFS_TAGS}
1964 if (!strcmp(refname, "HEAD"))
1965 return FILTER_REFS_DETACHED_HEAD;
1967 for (i = 0; i < ARRAY_SIZE(ref_kind); i++) {
1968 if (starts_with(refname, ref_kind[i].prefix))
1969 return ref_kind[i].kind;
1972 return FILTER_REFS_OTHERS;
1975 static int filter_ref_kind(struct ref_filter *filter, const char *refname)
1977 if (filter->kind == FILTER_REFS_BRANCHES ||
1978 filter->kind == FILTER_REFS_REMOTES ||
1979 filter->kind == FILTER_REFS_TAGS)
1980 return filter->kind;
1981 return ref_kind_from_refname(refname);
1985 * A call-back given to for_each_ref(). Filter refs and keep them for
1986 * later object processing.
1988 static int ref_filter_handler(const char *refname, const struct object_id *oid, int flag, void *cb_data)
1990 struct ref_filter_cbdata *ref_cbdata = cb_data;
1991 struct ref_filter *filter = ref_cbdata->filter;
1992 struct ref_array_item *ref;
1993 struct commit *commit = NULL;
1996 if (flag & REF_BAD_NAME) {
1997 warning(_("ignoring ref with broken name %s"), refname);
2001 if (flag & REF_ISBROKEN) {
2002 warning(_("ignoring broken ref %s"), refname);
2006 /* Obtain the current ref kind from filter_ref_kind() and ignore unwanted refs. */
2007 kind = filter_ref_kind(filter, refname);
2008 if (!(kind & filter->kind))
2011 if (!filter_pattern_match(filter, refname))
2014 if (filter->points_at.nr && !match_points_at(&filter->points_at, oid, refname))
2018 * A merge filter is applied on refs pointing to commits. Hence
2019 * obtain the commit using the 'oid' available and discard all
2020 * non-commits early. The actual filtering is done later.
2022 if (filter->merge_commit || filter->with_commit || filter->no_commit || filter->verbose) {
2023 commit = lookup_commit_reference_gently(oid, 1);
2026 /* We perform the filtering for the '--contains' option... */
2027 if (filter->with_commit &&
2028 !commit_contains(filter, commit, filter->with_commit, &ref_cbdata->contains_cache))
2030 /* ...or for the `--no-contains' option */
2031 if (filter->no_commit &&
2032 commit_contains(filter, commit, filter->no_commit, &ref_cbdata->no_contains_cache))
2037 * We do not open the object yet; sort may only need refname
2038 * to do its job and the resulting list may yet to be pruned
2039 * by maxcount logic.
2041 ref = ref_array_push(ref_cbdata->array, refname, oid);
2042 ref->commit = commit;
2049 /* Free memory allocated for a ref_array_item */
2050 static void free_array_item(struct ref_array_item *item)
2052 free((char *)item->symref);
2056 /* Free all memory allocated for ref_array */
2057 void ref_array_clear(struct ref_array *array)
2061 for (i = 0; i < array->nr; i++)
2062 free_array_item(array->items[i]);
2063 FREE_AND_NULL(array->items);
2064 array->nr = array->alloc = 0;
2067 static void do_merge_filter(struct ref_filter_cbdata *ref_cbdata)
2069 struct rev_info revs;
2071 struct ref_filter *filter = ref_cbdata->filter;
2072 struct ref_array *array = ref_cbdata->array;
2073 struct commit **to_clear = xcalloc(sizeof(struct commit *), array->nr);
2075 init_revisions(&revs, NULL);
2077 for (i = 0; i < array->nr; i++) {
2078 struct ref_array_item *item = array->items[i];
2079 add_pending_object(&revs, &item->commit->object, item->refname);
2080 to_clear[i] = item->commit;
2083 filter->merge_commit->object.flags |= UNINTERESTING;
2084 add_pending_object(&revs, &filter->merge_commit->object, "");
2087 if (prepare_revision_walk(&revs))
2088 die(_("revision walk setup failed"));
2093 for (i = 0; i < old_nr; i++) {
2094 struct ref_array_item *item = array->items[i];
2095 struct commit *commit = item->commit;
2097 int is_merged = !!(commit->object.flags & UNINTERESTING);
2099 if (is_merged == (filter->merge == REF_FILTER_MERGED_INCLUDE))
2100 array->items[array->nr++] = array->items[i];
2102 free_array_item(item);
2105 clear_commit_marks_many(old_nr, to_clear, ALL_REV_FLAGS);
2106 clear_commit_marks(filter->merge_commit, ALL_REV_FLAGS);
2111 * API for filtering a set of refs. Based on the type of refs the user
2112 * has requested, we iterate through those refs and apply filters
2113 * as per the given ref_filter structure and finally store the
2114 * filtered refs in the ref_array structure.
2116 int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int type)
2118 struct ref_filter_cbdata ref_cbdata;
2120 unsigned int broken = 0;
2122 ref_cbdata.array = array;
2123 ref_cbdata.filter = filter;
2125 if (type & FILTER_REFS_INCLUDE_BROKEN)
2127 filter->kind = type & FILTER_REFS_KIND_MASK;
2129 init_contains_cache(&ref_cbdata.contains_cache);
2130 init_contains_cache(&ref_cbdata.no_contains_cache);
2132 /* Simple per-ref filtering */
2134 die("filter_refs: invalid type");
2137 * For common cases where we need only branches or remotes or tags,
2138 * we only iterate through those refs. If a mix of refs is needed,
2139 * we iterate over all refs and filter out required refs with the help
2140 * of filter_ref_kind().
2142 if (filter->kind == FILTER_REFS_BRANCHES)
2143 ret = for_each_fullref_in("refs/heads/", ref_filter_handler, &ref_cbdata, broken);
2144 else if (filter->kind == FILTER_REFS_REMOTES)
2145 ret = for_each_fullref_in("refs/remotes/", ref_filter_handler, &ref_cbdata, broken);
2146 else if (filter->kind == FILTER_REFS_TAGS)
2147 ret = for_each_fullref_in("refs/tags/", ref_filter_handler, &ref_cbdata, broken);
2148 else if (filter->kind & FILTER_REFS_ALL)
2149 ret = for_each_fullref_in_pattern(filter, ref_filter_handler, &ref_cbdata, broken);
2150 if (!ret && (filter->kind & FILTER_REFS_DETACHED_HEAD))
2151 head_ref(ref_filter_handler, &ref_cbdata);
2154 clear_contains_cache(&ref_cbdata.contains_cache);
2155 clear_contains_cache(&ref_cbdata.no_contains_cache);
2157 /* Filters that need revision walking */
2158 if (filter->merge_commit)
2159 do_merge_filter(&ref_cbdata);
2164 static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
2166 struct atom_value *va, *vb;
2168 cmp_type cmp_type = used_atom[s->atom].type;
2169 int (*cmp_fn)(const char *, const char *);
2170 struct strbuf err = STRBUF_INIT;
2172 if (get_ref_atom_value(a, s->atom, &va, &err))
2174 if (get_ref_atom_value(b, s->atom, &vb, &err))
2176 strbuf_release(&err);
2177 cmp_fn = s->ignore_case ? strcasecmp : strcmp;
2179 cmp = versioncmp(va->s, vb->s);
2180 else if (cmp_type == FIELD_STR)
2181 cmp = cmp_fn(va->s, vb->s);
2183 if (va->value < vb->value)
2185 else if (va->value == vb->value)
2186 cmp = cmp_fn(a->refname, b->refname);
2191 return (s->reverse) ? -cmp : cmp;
2194 static int compare_refs(const void *a_, const void *b_, void *ref_sorting)
2196 struct ref_array_item *a = *((struct ref_array_item **)a_);
2197 struct ref_array_item *b = *((struct ref_array_item **)b_);
2198 struct ref_sorting *s;
2200 for (s = ref_sorting; s; s = s->next) {
2201 int cmp = cmp_ref_sorting(s, a, b);
2208 void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
2210 QSORT_S(array->items, array->nr, compare_refs, sorting);
2213 static void append_literal(const char *cp, const char *ep, struct ref_formatting_state *state)
2215 struct strbuf *s = &state->stack->output;
2217 while (*cp && (!ep || cp < ep)) {
2222 int ch = hex2chr(cp + 1);
2224 strbuf_addch(s, ch);
2230 strbuf_addch(s, *cp);
2235 int format_ref_array_item(struct ref_array_item *info,
2236 const struct ref_format *format,
2237 struct strbuf *final_buf,
2238 struct strbuf *error_buf)
2240 const char *cp, *sp, *ep;
2241 struct ref_formatting_state state = REF_FORMATTING_STATE_INIT;
2243 state.quote_style = format->quote_style;
2244 push_stack_element(&state.stack);
2246 for (cp = format->format; *cp && (sp = find_next(cp)); cp = ep + 1) {
2247 struct atom_value *atomv;
2250 ep = strchr(sp, ')');
2252 append_literal(cp, sp, &state);
2253 pos = parse_ref_filter_atom(format, sp + 2, ep, error_buf);
2254 if (pos < 0 || get_ref_atom_value(info, pos, &atomv, error_buf) ||
2255 atomv->handler(atomv, &state, error_buf)) {
2256 pop_stack_element(&state.stack);
2261 sp = cp + strlen(cp);
2262 append_literal(cp, sp, &state);
2264 if (format->need_color_reset_at_eol) {
2265 struct atom_value resetv;
2266 resetv.s = GIT_COLOR_RESET;
2267 if (append_atom(&resetv, &state, error_buf)) {
2268 pop_stack_element(&state.stack);
2272 if (state.stack->prev) {
2273 pop_stack_element(&state.stack);
2274 return strbuf_addf_ret(error_buf, -1, _("format: %%(end) atom missing"));
2276 strbuf_addbuf(final_buf, &state.stack->output);
2277 pop_stack_element(&state.stack);
2281 void show_ref_array_item(struct ref_array_item *info,
2282 const struct ref_format *format)
2284 struct strbuf final_buf = STRBUF_INIT;
2285 struct strbuf error_buf = STRBUF_INIT;
2287 if (format_ref_array_item(info, format, &final_buf, &error_buf))
2288 die("%s", error_buf.buf);
2289 fwrite(final_buf.buf, 1, final_buf.len, stdout);
2290 strbuf_release(&error_buf);
2291 strbuf_release(&final_buf);
2295 void pretty_print_ref(const char *name, const struct object_id *oid,
2296 const struct ref_format *format)
2298 struct ref_array_item *ref_item;
2299 ref_item = new_ref_array_item(name, oid);
2300 ref_item->kind = ref_kind_from_refname(name);
2301 show_ref_array_item(ref_item, format);
2302 free_array_item(ref_item);
2305 static int parse_sorting_atom(const char *atom)
2308 * This parses an atom using a dummy ref_format, since we don't
2309 * actually care about the formatting details.
2311 struct ref_format dummy = REF_FORMAT_INIT;
2312 const char *end = atom + strlen(atom);
2313 struct strbuf err = STRBUF_INIT;
2314 int res = parse_ref_filter_atom(&dummy, atom, end, &err);
2317 strbuf_release(&err);
2321 /* If no sorting option is given, use refname to sort as default */
2322 struct ref_sorting *ref_default_sorting(void)
2324 static const char cstr_name[] = "refname";
2326 struct ref_sorting *sorting = xcalloc(1, sizeof(*sorting));
2328 sorting->next = NULL;
2329 sorting->atom = parse_sorting_atom(cstr_name);
2333 void parse_ref_sorting(struct ref_sorting **sorting_tail, const char *arg)
2335 struct ref_sorting *s;
2337 s = xcalloc(1, sizeof(*s));
2338 s->next = *sorting_tail;
2345 if (skip_prefix(arg, "version:", &arg) ||
2346 skip_prefix(arg, "v:", &arg))
2348 s->atom = parse_sorting_atom(arg);
2351 int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
2353 if (!arg) /* should --no-sort void the list ? */
2355 parse_ref_sorting(opt->value, arg);
2359 int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
2361 struct ref_filter *rf = opt->value;
2362 struct object_id oid;
2363 int no_merged = starts_with(opt->long_name, "no");
2367 return opterror(opt, "is incompatible with --merged", 0);
2369 return opterror(opt, "is incompatible with --no-merged", 0);
2373 rf->merge = no_merged
2374 ? REF_FILTER_MERGED_OMIT
2375 : REF_FILTER_MERGED_INCLUDE;
2377 if (get_oid(arg, &oid))
2378 die(_("malformed object name %s"), arg);
2380 rf->merge_commit = lookup_commit_reference_gently(&oid, 0);
2381 if (!rf->merge_commit)
2382 return opterror(opt, "must point to a commit", 0);