3 #include "parse-options.h"
11 #include "ref-filter.h"
14 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
22 { "objectsize", FIELD_ULONG },
26 { "numparent", FIELD_ULONG },
33 { "authordate", FIELD_TIME },
37 { "committerdate", FIELD_TIME },
41 { "taggerdate", FIELD_TIME },
43 { "creatordate", FIELD_TIME },
47 { "contents:subject" },
49 { "contents:signature" },
59 * An atom is a valid field atom listed above, possibly prefixed with
60 * a "*" to denote deref_tag().
62 * We parse given format string and sort specifiers, and make a list
63 * of properties that we need to extract out of objects. ref_array_item
64 * structure will hold an array of values extracted that can be
65 * indexed with the "atom number", which is an index into this
68 static const char **used_atom;
69 static cmp_type *used_atom_type;
70 static int used_atom_cnt, need_tagged, need_symref;
71 static int need_color_reset_at_eol;
74 * Used to parse format string and sort specifiers
76 int parse_ref_filter_atom(const char *atom, const char *ep)
82 if (*sp == '*' && sp < ep)
85 die("malformed field name: %.*s", (int)(ep-atom), atom);
87 /* Do we have the atom already used elsewhere? */
88 for (i = 0; i < used_atom_cnt; i++) {
89 int len = strlen(used_atom[i]);
90 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
94 /* Is the atom a valid one? */
95 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
96 int len = strlen(valid_atom[i].name);
98 * If the atom name has a colon, strip it and everything after
99 * it off - it specifies the format for this entry, and
100 * shouldn't be used for checking against the valid_atom
103 const char *formatp = strchr(sp, ':');
104 if (!formatp || ep < formatp)
106 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
110 if (ARRAY_SIZE(valid_atom) <= i)
111 die("unknown field name: %.*s", (int)(ep-atom), atom);
113 /* Add it in, including the deref prefix */
116 REALLOC_ARRAY(used_atom, used_atom_cnt);
117 REALLOC_ARRAY(used_atom_type, used_atom_cnt);
118 used_atom[at] = xmemdupz(atom, ep - atom);
119 used_atom_type[at] = valid_atom[i].cmp_type;
122 if (!strcmp(used_atom[at], "symref"))
128 * In a format string, find the next occurrence of %(atom).
130 static const char *find_next(const char *cp)
135 * %( is the start of an atom;
136 * %% is a quoted per-cent.
140 else if (cp[1] == '%')
141 cp++; /* skip over two % */
142 /* otherwise this is a singleton, literal % */
150 * Make sure the format string is well formed, and parse out
153 int verify_ref_format(const char *format)
157 need_color_reset_at_eol = 0;
158 for (cp = format; *cp && (sp = find_next(cp)); ) {
159 const char *color, *ep = strchr(sp, ')');
163 return error("malformed format string %s", sp);
164 /* sp points at "%(" and ep points at the closing ")" */
165 at = parse_ref_filter_atom(sp + 2, ep);
168 if (skip_prefix(used_atom[at], "color:", &color))
169 need_color_reset_at_eol = !!strcmp(color, "reset");
175 * Given an object name, read the object data and size, and return a
176 * "struct object". If the object data we are returning is also borrowed
177 * by the "struct object" representation, set *eaten as well---it is a
178 * signal from parse_object_buffer to us not to free the buffer.
180 static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
182 enum object_type type;
183 void *buf = read_sha1_file(sha1, &type, sz);
186 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
192 static int grab_objectname(const char *name, const unsigned char *sha1,
193 struct atom_value *v)
195 if (!strcmp(name, "objectname")) {
196 char *s = xmalloc(41);
197 strcpy(s, sha1_to_hex(sha1));
201 if (!strcmp(name, "objectname:short")) {
202 v->s = xstrdup(find_unique_abbrev(sha1, DEFAULT_ABBREV));
208 /* See grab_values */
209 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
213 for (i = 0; i < used_atom_cnt; i++) {
214 const char *name = used_atom[i];
215 struct atom_value *v = &val[i];
216 if (!!deref != (*name == '*'))
220 if (!strcmp(name, "objecttype"))
221 v->s = typename(obj->type);
222 else if (!strcmp(name, "objectsize")) {
223 char *s = xmalloc(40);
224 sprintf(s, "%lu", sz);
229 grab_objectname(name, obj->sha1, v);
233 /* See grab_values */
234 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
237 struct tag *tag = (struct tag *) obj;
239 for (i = 0; i < used_atom_cnt; i++) {
240 const char *name = used_atom[i];
241 struct atom_value *v = &val[i];
242 if (!!deref != (*name == '*'))
246 if (!strcmp(name, "tag"))
248 else if (!strcmp(name, "type") && tag->tagged)
249 v->s = typename(tag->tagged->type);
250 else if (!strcmp(name, "object") && tag->tagged) {
251 char *s = xmalloc(41);
252 strcpy(s, sha1_to_hex(tag->tagged->sha1));
258 /* See grab_values */
259 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
262 struct commit *commit = (struct commit *) obj;
264 for (i = 0; i < used_atom_cnt; i++) {
265 const char *name = used_atom[i];
266 struct atom_value *v = &val[i];
267 if (!!deref != (*name == '*'))
271 if (!strcmp(name, "tree")) {
272 char *s = xmalloc(41);
273 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
276 if (!strcmp(name, "numparent")) {
277 char *s = xmalloc(40);
278 v->ul = commit_list_count(commit->parents);
279 sprintf(s, "%lu", v->ul);
282 else if (!strcmp(name, "parent")) {
283 int num = commit_list_count(commit->parents);
285 struct commit_list *parents;
286 char *s = xmalloc(41 * num + 1);
288 for (i = 0, parents = commit->parents;
290 parents = parents->next, i = i + 41) {
291 struct commit *parent = parents->item;
292 strcpy(s+i, sha1_to_hex(parent->object.sha1));
302 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
306 if (!strncmp(buf, who, wholen) &&
308 return buf + wholen + 1;
309 eol = strchr(buf, '\n');
314 return ""; /* end of header */
320 static const char *copy_line(const char *buf)
322 const char *eol = strchrnul(buf, '\n');
323 return xmemdupz(buf, eol - buf);
326 static const char *copy_name(const char *buf)
329 for (cp = buf; *cp && *cp != '\n'; cp++) {
330 if (!strncmp(cp, " <", 2))
331 return xmemdupz(buf, cp - buf);
336 static const char *copy_email(const char *buf)
338 const char *email = strchr(buf, '<');
342 eoemail = strchr(email, '>');
345 return xmemdupz(email, eoemail + 1 - email);
348 static char *copy_subject(const char *buf, unsigned long len)
350 char *r = xmemdupz(buf, len);
353 for (i = 0; i < len; i++)
360 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
362 const char *eoemail = strstr(buf, "> ");
364 unsigned long timestamp;
366 enum date_mode date_mode = DATE_NORMAL;
370 * We got here because atomname ends in "date" or "date<something>";
371 * it's not possible that <something> is not ":<format>" because
372 * parse_ref_filter_atom() wouldn't have allowed it, so we can assume that no
373 * ":" means no format is specified, and use the default.
375 formatp = strchr(atomname, ':');
376 if (formatp != NULL) {
378 date_mode = parse_date_format(formatp);
383 timestamp = strtoul(eoemail + 2, &zone, 10);
384 if (timestamp == ULONG_MAX)
386 tz = strtol(zone, NULL, 10);
387 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
389 v->s = xstrdup(show_date(timestamp, tz, date_mode));
397 /* See grab_values */
398 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
401 int wholen = strlen(who);
402 const char *wholine = NULL;
404 for (i = 0; i < used_atom_cnt; i++) {
405 const char *name = used_atom[i];
406 struct atom_value *v = &val[i];
407 if (!!deref != (*name == '*'))
411 if (strncmp(who, name, wholen))
413 if (name[wholen] != 0 &&
414 strcmp(name + wholen, "name") &&
415 strcmp(name + wholen, "email") &&
416 !starts_with(name + wholen, "date"))
419 wholine = find_wholine(who, wholen, buf, sz);
421 return; /* no point looking for it */
422 if (name[wholen] == 0)
423 v->s = copy_line(wholine);
424 else if (!strcmp(name + wholen, "name"))
425 v->s = copy_name(wholine);
426 else if (!strcmp(name + wholen, "email"))
427 v->s = copy_email(wholine);
428 else if (starts_with(name + wholen, "date"))
429 grab_date(wholine, v, name);
433 * For a tag or a commit object, if "creator" or "creatordate" is
434 * requested, do something special.
436 if (strcmp(who, "tagger") && strcmp(who, "committer"))
437 return; /* "author" for commit object is not wanted */
439 wholine = find_wholine(who, wholen, buf, sz);
442 for (i = 0; i < used_atom_cnt; i++) {
443 const char *name = used_atom[i];
444 struct atom_value *v = &val[i];
445 if (!!deref != (*name == '*'))
450 if (starts_with(name, "creatordate"))
451 grab_date(wholine, v, name);
452 else if (!strcmp(name, "creator"))
453 v->s = copy_line(wholine);
457 static void find_subpos(const char *buf, unsigned long sz,
458 const char **sub, unsigned long *sublen,
459 const char **body, unsigned long *bodylen,
460 unsigned long *nonsiglen,
461 const char **sig, unsigned long *siglen)
464 /* skip past header until we hit empty line */
465 while (*buf && *buf != '\n') {
466 eol = strchrnul(buf, '\n');
471 /* skip any empty lines */
475 /* parse signature first; we might not even have a subject line */
476 *sig = buf + parse_signature(buf, strlen(buf));
477 *siglen = strlen(*sig);
479 /* subject is first non-empty line */
481 /* subject goes to first empty line */
482 while (buf < *sig && *buf && *buf != '\n') {
483 eol = strchrnul(buf, '\n');
488 *sublen = buf - *sub;
489 /* drop trailing newline, if present */
490 if (*sublen && (*sub)[*sublen - 1] == '\n')
493 /* skip any empty lines */
497 *bodylen = strlen(buf);
498 *nonsiglen = *sig - buf;
501 /* See grab_values */
502 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
505 const char *subpos = NULL, *bodypos = NULL, *sigpos = NULL;
506 unsigned long sublen = 0, bodylen = 0, nonsiglen = 0, siglen = 0;
508 for (i = 0; i < used_atom_cnt; i++) {
509 const char *name = used_atom[i];
510 struct atom_value *v = &val[i];
511 if (!!deref != (*name == '*'))
515 if (strcmp(name, "subject") &&
516 strcmp(name, "body") &&
517 strcmp(name, "contents") &&
518 strcmp(name, "contents:subject") &&
519 strcmp(name, "contents:body") &&
520 strcmp(name, "contents:signature"))
525 &bodypos, &bodylen, &nonsiglen,
528 if (!strcmp(name, "subject"))
529 v->s = copy_subject(subpos, sublen);
530 else if (!strcmp(name, "contents:subject"))
531 v->s = copy_subject(subpos, sublen);
532 else if (!strcmp(name, "body"))
533 v->s = xmemdupz(bodypos, bodylen);
534 else if (!strcmp(name, "contents:body"))
535 v->s = xmemdupz(bodypos, nonsiglen);
536 else if (!strcmp(name, "contents:signature"))
537 v->s = xmemdupz(sigpos, siglen);
538 else if (!strcmp(name, "contents"))
539 v->s = xstrdup(subpos);
544 * We want to have empty print-string for field requests
545 * that do not apply (e.g. "authordate" for a tag object)
547 static void fill_missing_values(struct atom_value *val)
550 for (i = 0; i < used_atom_cnt; i++) {
551 struct atom_value *v = &val[i];
558 * val is a list of atom_value to hold returned values. Extract
559 * the values for atoms in used_atom array out of (obj, buf, sz).
560 * when deref is false, (obj, buf, sz) is the object that is
561 * pointed at by the ref itself; otherwise it is the object the
562 * ref (which is a tag) refers to.
564 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
566 grab_common_values(val, deref, obj, buf, sz);
569 grab_tag_values(val, deref, obj, buf, sz);
570 grab_sub_body_contents(val, deref, obj, buf, sz);
571 grab_person("tagger", val, deref, obj, buf, sz);
574 grab_commit_values(val, deref, obj, buf, sz);
575 grab_sub_body_contents(val, deref, obj, buf, sz);
576 grab_person("author", val, deref, obj, buf, sz);
577 grab_person("committer", val, deref, obj, buf, sz);
580 /* grab_tree_values(val, deref, obj, buf, sz); */
583 /* grab_blob_values(val, deref, obj, buf, sz); */
586 die("Eh? Object of type %d?", obj->type);
590 static inline char *copy_advance(char *dst, const char *src)
598 * Parse the object referred by ref, and grab needed value.
600 static void populate_value(struct ref_array_item *ref)
606 const unsigned char *tagged;
608 ref->value = xcalloc(used_atom_cnt, sizeof(struct atom_value));
610 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
611 unsigned char unused1[20];
612 ref->symref = resolve_refdup(ref->refname, RESOLVE_REF_READING,
618 /* Fill in specials first */
619 for (i = 0; i < used_atom_cnt; i++) {
620 const char *name = used_atom[i];
621 struct atom_value *v = &ref->value[i];
625 struct branch *branch = NULL;
632 if (starts_with(name, "refname"))
633 refname = ref->refname;
634 else if (starts_with(name, "symref"))
635 refname = ref->symref ? ref->symref : "";
636 else if (starts_with(name, "upstream")) {
637 const char *branch_name;
638 /* only local branches may have an upstream */
639 if (!skip_prefix(ref->refname, "refs/heads/",
642 branch = branch_get(branch_name);
644 refname = branch_get_upstream(branch, NULL);
647 } else if (starts_with(name, "push")) {
648 const char *branch_name;
649 if (!skip_prefix(ref->refname, "refs/heads/",
652 branch = branch_get(branch_name);
654 refname = branch_get_push(branch, NULL);
657 } else if (starts_with(name, "color:")) {
658 char color[COLOR_MAXLEN] = "";
660 if (color_parse(name + 6, color) < 0)
661 die(_("unable to parse format"));
662 v->s = xstrdup(color);
664 } else if (!strcmp(name, "flag")) {
665 char buf[256], *cp = buf;
666 if (ref->flag & REF_ISSYMREF)
667 cp = copy_advance(cp, ",symref");
668 if (ref->flag & REF_ISPACKED)
669 cp = copy_advance(cp, ",packed");
674 v->s = xstrdup(buf + 1);
677 } else if (!deref && grab_objectname(name, ref->objectname, v)) {
679 } else if (!strcmp(name, "HEAD")) {
681 unsigned char sha1[20];
683 head = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
685 if (!strcmp(ref->refname, head))
693 formatp = strchr(name, ':');
695 int num_ours, num_theirs;
698 if (!strcmp(formatp, "short"))
699 refname = shorten_unambiguous_ref(refname,
700 warn_ambiguous_refs);
701 else if (!strcmp(formatp, "track") &&
702 (starts_with(name, "upstream") ||
703 starts_with(name, "push"))) {
706 if (stat_tracking_info(branch, &num_ours,
710 if (!num_ours && !num_theirs)
712 else if (!num_ours) {
713 sprintf(buf, "[behind %d]", num_theirs);
715 } else if (!num_theirs) {
716 sprintf(buf, "[ahead %d]", num_ours);
719 sprintf(buf, "[ahead %d, behind %d]",
720 num_ours, num_theirs);
724 } else if (!strcmp(formatp, "trackshort") &&
725 (starts_with(name, "upstream") ||
726 starts_with(name, "push"))) {
729 if (stat_tracking_info(branch, &num_ours,
733 if (!num_ours && !num_theirs)
737 else if (!num_theirs)
743 die("unknown %.*s format %s",
744 (int)(formatp - name), name, formatp);
750 int len = strlen(refname);
751 char *s = xmalloc(len + 4);
752 sprintf(s, "%s^{}", refname);
757 for (i = 0; i < used_atom_cnt; i++) {
758 struct atom_value *v = &ref->value[i];
765 buf = get_obj(ref->objectname, &obj, &size, &eaten);
767 die("missing object %s for %s",
768 sha1_to_hex(ref->objectname), ref->refname);
770 die("parse_object_buffer failed on %s for %s",
771 sha1_to_hex(ref->objectname), ref->refname);
773 grab_values(ref->value, 0, obj, buf, size);
778 * If there is no atom that wants to know about tagged
779 * object, we are done.
781 if (!need_tagged || (obj->type != OBJ_TAG))
785 * If it is a tag object, see if we use a value that derefs
786 * the object, and if we do grab the object it refers to.
788 tagged = ((struct tag *)obj)->tagged->sha1;
791 * NEEDSWORK: This derefs tag only once, which
792 * is good to deal with chains of trust, but
793 * is not consistent with what deref_tag() does
794 * which peels the onion to the core.
796 buf = get_obj(tagged, &obj, &size, &eaten);
798 die("missing object %s for %s",
799 sha1_to_hex(tagged), ref->refname);
801 die("parse_object_buffer failed on %s for %s",
802 sha1_to_hex(tagged), ref->refname);
803 grab_values(ref->value, 1, obj, buf, size);
809 * Given a ref, return the value for the atom. This lazily gets value
810 * out of the object by calling populate value.
812 static void get_ref_atom_value(struct ref_array_item *ref, int atom, struct atom_value **v)
816 fill_missing_values(ref->value);
818 *v = &ref->value[atom];
821 enum contains_result {
822 CONTAINS_UNKNOWN = -1,
828 * Mimicking the real stack, this stack lives on the heap, avoiding stack
831 * At each recursion step, the stack items points to the commits whose
832 * ancestors are to be inspected.
834 struct contains_stack {
836 struct contains_stack_entry {
837 struct commit *commit;
838 struct commit_list *parents;
842 static int in_commit_list(const struct commit_list *want, struct commit *c)
844 for (; want; want = want->next)
845 if (!hashcmp(want->item->object.sha1, c->object.sha1))
851 * Test whether the candidate or one of its parents is contained in the list.
852 * Do not recurse to find out, though, but return -1 if inconclusive.
854 static enum contains_result contains_test(struct commit *candidate,
855 const struct commit_list *want)
857 /* was it previously marked as containing a want commit? */
858 if (candidate->object.flags & TMP_MARK)
860 /* or marked as not possibly containing a want commit? */
861 if (candidate->object.flags & UNINTERESTING)
864 if (in_commit_list(want, candidate)) {
865 candidate->object.flags |= TMP_MARK;
869 if (parse_commit(candidate) < 0)
875 static void push_to_contains_stack(struct commit *candidate, struct contains_stack *contains_stack)
877 ALLOC_GROW(contains_stack->contains_stack, contains_stack->nr + 1, contains_stack->alloc);
878 contains_stack->contains_stack[contains_stack->nr].commit = candidate;
879 contains_stack->contains_stack[contains_stack->nr++].parents = candidate->parents;
882 static enum contains_result contains_tag_algo(struct commit *candidate,
883 const struct commit_list *want)
885 struct contains_stack contains_stack = { 0, 0, NULL };
886 int result = contains_test(candidate, want);
888 if (result != CONTAINS_UNKNOWN)
891 push_to_contains_stack(candidate, &contains_stack);
892 while (contains_stack.nr) {
893 struct contains_stack_entry *entry = &contains_stack.contains_stack[contains_stack.nr - 1];
894 struct commit *commit = entry->commit;
895 struct commit_list *parents = entry->parents;
898 commit->object.flags |= UNINTERESTING;
902 * If we just popped the stack, parents->item has been marked,
903 * therefore contains_test will return a meaningful 0 or 1.
905 else switch (contains_test(parents->item, want)) {
907 commit->object.flags |= TMP_MARK;
911 entry->parents = parents->next;
913 case CONTAINS_UNKNOWN:
914 push_to_contains_stack(parents->item, &contains_stack);
918 free(contains_stack.contains_stack);
919 return contains_test(candidate, want);
922 static int commit_contains(struct ref_filter *filter, struct commit *commit)
924 if (filter->with_commit_tag_algo)
925 return contains_tag_algo(commit, filter->with_commit);
926 return is_descendant_of(commit, filter->with_commit);
930 * Return 1 if the refname matches one of the patterns, otherwise 0.
931 * A pattern can be path prefix (e.g. a refname "refs/heads/master"
932 * matches a pattern "refs/heads/") or a wildcard (e.g. the same ref
933 * matches "refs/heads/m*",too).
935 static int match_name_as_path(const char **pattern, const char *refname)
937 int namelen = strlen(refname);
938 for (; *pattern; pattern++) {
939 const char *p = *pattern;
940 int plen = strlen(p);
942 if ((plen <= namelen) &&
943 !strncmp(refname, p, plen) &&
944 (refname[plen] == '\0' ||
945 refname[plen] == '/' ||
948 if (!wildmatch(p, refname, WM_PATHNAME, NULL))
955 * Given a ref (sha1, refname), check if the ref belongs to the array
956 * of sha1s. If the given ref is a tag, check if the given tag points
957 * at one of the sha1s in the given sha1 array.
958 * the given sha1_array.
960 * 1. Only a single level of inderection is obtained, we might want to
961 * change this to account for multiple levels (e.g. annotated tags
962 * pointing to annotated tags pointing to a commit.)
963 * 2. As the refs are cached we might know what refname peels to without
964 * the need to parse the object via parse_object(). peel_ref() might be a
965 * more efficient alternative to obtain the pointee.
967 static const unsigned char *match_points_at(struct sha1_array *points_at,
968 const unsigned char *sha1,
971 const unsigned char *tagged_sha1 = NULL;
974 if (sha1_array_lookup(points_at, sha1) >= 0)
976 obj = parse_object(sha1);
978 die(_("malformed object at '%s'"), refname);
979 if (obj->type == OBJ_TAG)
980 tagged_sha1 = ((struct tag *)obj)->tagged->sha1;
981 if (tagged_sha1 && sha1_array_lookup(points_at, tagged_sha1) >= 0)
986 /* Allocate space for a new ref_array_item and copy the objectname and flag to it */
987 static struct ref_array_item *new_ref_array_item(const char *refname,
988 const unsigned char *objectname,
991 size_t len = strlen(refname);
992 struct ref_array_item *ref = xcalloc(1, sizeof(struct ref_array_item) + len + 1);
993 memcpy(ref->refname, refname, len);
994 ref->refname[len] = '\0';
995 hashcpy(ref->objectname, objectname);
1002 * A call-back given to for_each_ref(). Filter refs and keep them for
1003 * later object processing.
1005 static int ref_filter_handler(const char *refname, const struct object_id *oid, int flag, void *cb_data)
1007 struct ref_filter_cbdata *ref_cbdata = cb_data;
1008 struct ref_filter *filter = ref_cbdata->filter;
1009 struct ref_array_item *ref;
1010 struct commit *commit = NULL;
1012 if (flag & REF_BAD_NAME) {
1013 warning("ignoring ref with broken name %s", refname);
1017 if (*filter->name_patterns && !match_name_as_path(filter->name_patterns, refname))
1020 if (filter->points_at.nr && !match_points_at(&filter->points_at, oid->hash, refname))
1024 * A merge filter is applied on refs pointing to commits. Hence
1025 * obtain the commit using the 'oid' available and discard all
1026 * non-commits early. The actual filtering is done later.
1028 if (filter->merge_commit || filter->with_commit) {
1029 commit = lookup_commit_reference_gently(oid->hash, 1);
1032 /* We perform the filtering for the '--contains' option */
1033 if (filter->with_commit &&
1034 !commit_contains(filter, commit))
1039 * We do not open the object yet; sort may only need refname
1040 * to do its job and the resulting list may yet to be pruned
1041 * by maxcount logic.
1043 ref = new_ref_array_item(refname, oid->hash, flag);
1044 ref->commit = commit;
1046 REALLOC_ARRAY(ref_cbdata->array->items, ref_cbdata->array->nr + 1);
1047 ref_cbdata->array->items[ref_cbdata->array->nr++] = ref;
1051 /* Free memory allocated for a ref_array_item */
1052 static void free_array_item(struct ref_array_item *item)
1054 free((char *)item->symref);
1058 /* Free all memory allocated for ref_array */
1059 void ref_array_clear(struct ref_array *array)
1063 for (i = 0; i < array->nr; i++)
1064 free_array_item(array->items[i]);
1066 array->items = NULL;
1067 array->nr = array->alloc = 0;
1070 static void do_merge_filter(struct ref_filter_cbdata *ref_cbdata)
1072 struct rev_info revs;
1074 struct ref_filter *filter = ref_cbdata->filter;
1075 struct ref_array *array = ref_cbdata->array;
1076 struct commit **to_clear = xcalloc(sizeof(struct commit *), array->nr);
1078 init_revisions(&revs, NULL);
1080 for (i = 0; i < array->nr; i++) {
1081 struct ref_array_item *item = array->items[i];
1082 add_pending_object(&revs, &item->commit->object, item->refname);
1083 to_clear[i] = item->commit;
1086 filter->merge_commit->object.flags |= UNINTERESTING;
1087 add_pending_object(&revs, &filter->merge_commit->object, "");
1090 if (prepare_revision_walk(&revs))
1091 die(_("revision walk setup failed"));
1096 for (i = 0; i < old_nr; i++) {
1097 struct ref_array_item *item = array->items[i];
1098 struct commit *commit = item->commit;
1100 int is_merged = !!(commit->object.flags & UNINTERESTING);
1102 if (is_merged == (filter->merge == REF_FILTER_MERGED_INCLUDE))
1103 array->items[array->nr++] = array->items[i];
1105 free_array_item(item);
1108 for (i = 0; i < old_nr; i++)
1109 clear_commit_marks(to_clear[i], ALL_REV_FLAGS);
1110 clear_commit_marks(filter->merge_commit, ALL_REV_FLAGS);
1115 * API for filtering a set of refs. Based on the type of refs the user
1116 * has requested, we iterate through those refs and apply filters
1117 * as per the given ref_filter structure and finally store the
1118 * filtered refs in the ref_array structure.
1120 int filter_refs(struct ref_array *array, struct ref_filter *filter, unsigned int type)
1122 struct ref_filter_cbdata ref_cbdata;
1125 ref_cbdata.array = array;
1126 ref_cbdata.filter = filter;
1128 /* Simple per-ref filtering */
1129 if (type & (FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN))
1130 ret = for_each_rawref(ref_filter_handler, &ref_cbdata);
1131 else if (type & FILTER_REFS_ALL)
1132 ret = for_each_ref(ref_filter_handler, &ref_cbdata);
1134 die("filter_refs: invalid type");
1136 /* Filters that need revision walking */
1137 if (filter->merge_commit)
1138 do_merge_filter(&ref_cbdata);
1143 static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, struct ref_array_item *b)
1145 struct atom_value *va, *vb;
1147 cmp_type cmp_type = used_atom_type[s->atom];
1149 get_ref_atom_value(a, s->atom, &va);
1150 get_ref_atom_value(b, s->atom, &vb);
1153 cmp = strcmp(va->s, vb->s);
1156 if (va->ul < vb->ul)
1158 else if (va->ul == vb->ul)
1164 return (s->reverse) ? -cmp : cmp;
1167 static struct ref_sorting *ref_sorting;
1168 static int compare_refs(const void *a_, const void *b_)
1170 struct ref_array_item *a = *((struct ref_array_item **)a_);
1171 struct ref_array_item *b = *((struct ref_array_item **)b_);
1172 struct ref_sorting *s;
1174 for (s = ref_sorting; s; s = s->next) {
1175 int cmp = cmp_ref_sorting(s, a, b);
1182 void ref_array_sort(struct ref_sorting *sorting, struct ref_array *array)
1184 ref_sorting = sorting;
1185 qsort(array->items, array->nr, sizeof(struct ref_array_item *), compare_refs);
1188 static void print_value(struct atom_value *v, int quote_style)
1190 struct strbuf sb = STRBUF_INIT;
1191 switch (quote_style) {
1193 fputs(v->s, stdout);
1196 sq_quote_buf(&sb, v->s);
1199 perl_quote_buf(&sb, v->s);
1202 python_quote_buf(&sb, v->s);
1205 tcl_quote_buf(&sb, v->s);
1208 if (quote_style != QUOTE_NONE) {
1209 fputs(sb.buf, stdout);
1210 strbuf_release(&sb);
1214 static int hex1(char ch)
1216 if ('0' <= ch && ch <= '9')
1218 else if ('a' <= ch && ch <= 'f')
1219 return ch - 'a' + 10;
1220 else if ('A' <= ch && ch <= 'F')
1221 return ch - 'A' + 10;
1224 static int hex2(const char *cp)
1227 return (hex1(cp[0]) << 4) | hex1(cp[1]);
1232 static void emit(const char *cp, const char *ep)
1234 while (*cp && (!ep || cp < ep)) {
1239 int ch = hex2(cp + 1);
1252 void show_ref_array_item(struct ref_array_item *info, const char *format, int quote_style)
1254 const char *cp, *sp, *ep;
1256 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
1257 struct atom_value *atomv;
1259 ep = strchr(sp, ')');
1262 get_ref_atom_value(info, parse_ref_filter_atom(sp + 2, ep), &atomv);
1263 print_value(atomv, quote_style);
1266 sp = cp + strlen(cp);
1269 if (need_color_reset_at_eol) {
1270 struct atom_value resetv;
1271 char color[COLOR_MAXLEN] = "";
1273 if (color_parse("reset", color) < 0)
1274 die("BUG: couldn't parse 'reset' as a color");
1276 print_value(&resetv, quote_style);
1281 /* If no sorting option is given, use refname to sort as default */
1282 struct ref_sorting *ref_default_sorting(void)
1284 static const char cstr_name[] = "refname";
1286 struct ref_sorting *sorting = xcalloc(1, sizeof(*sorting));
1288 sorting->next = NULL;
1289 sorting->atom = parse_ref_filter_atom(cstr_name, cstr_name + strlen(cstr_name));
1293 int parse_opt_ref_sorting(const struct option *opt, const char *arg, int unset)
1295 struct ref_sorting **sorting_tail = opt->value;
1296 struct ref_sorting *s;
1299 if (!arg) /* should --no-sort void the list ? */
1302 s = xcalloc(1, sizeof(*s));
1303 s->next = *sorting_tail;
1311 s->atom = parse_ref_filter_atom(arg, arg+len);
1315 int parse_opt_merge_filter(const struct option *opt, const char *arg, int unset)
1317 struct ref_filter *rf = opt->value;
1318 unsigned char sha1[20];
1320 rf->merge = starts_with(opt->long_name, "no")
1321 ? REF_FILTER_MERGED_OMIT
1322 : REF_FILTER_MERGED_INCLUDE;
1324 if (get_sha1(arg, sha1))
1325 die(_("malformed object name %s"), arg);
1327 rf->merge_commit = lookup_commit_reference_gently(sha1, 0);
1328 if (!rf->merge_commit)
1329 return opterror(opt, "must point to a commit", 0);