1#include "builtin.h"
2#include "cache.h"
3#include "refs.h"
4#include "object.h"
5#include "tag.h"
6#include "commit.h"
7#include "tree.h"
8#include "blob.h"
9#include "quote.h"
10/* Quoting styles */
12#define QUOTE_NONE 0
13#define QUOTE_SHELL 1
14#define QUOTE_PERL 2
15#define QUOTE_PYTHON 3
16#define QUOTE_TCL 4
17typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
19struct atom_value {
21 const char *s;
22 unsigned long ul; /* used for sorting when not FIELD_STR */
23};
24struct ref_sort {
26 struct ref_sort *next;
27 int atom; /* index into used_atom array */
28 unsigned reverse : 1;
29};
30struct refinfo {
32 char *refname;
33 unsigned char objectname[20];
34 struct atom_value *value;
35};
36static struct {
38 const char *name;
39 cmp_type cmp_type;
40} valid_atom[] = {
41 { "refname" },
42 { "objecttype" },
43 { "objectsize", FIELD_ULONG },
44 { "objectname" },
45 { "tree" },
46 { "parent" }, /* NEEDSWORK: how to address 2nd and later parents? */
47 { "numparent", FIELD_ULONG },
48 { "object" },
49 { "type" },
50 { "tag" },
51 { "author" },
52 { "authorname" },
53 { "authoremail" },
54 { "authordate", FIELD_TIME },
55 { "committer" },
56 { "committername" },
57 { "committeremail" },
58 { "committerdate", FIELD_TIME },
59 { "tagger" },
60 { "taggername" },
61 { "taggeremail" },
62 { "taggerdate", FIELD_TIME },
63 { "creator" },
64 { "creatordate", FIELD_TIME },
65 { "subject" },
66 { "body" },
67 { "contents" },
68};
69/*
71 * An atom is a valid field atom listed above, possibly prefixed with
72 * a "*" to denote deref_tag().
73 *
74 * We parse given format string and sort specifiers, and make a list
75 * of properties that we need to extract out of objects. refinfo
76 * structure will hold an array of values extracted that can be
77 * indexed with the "atom number", which is an index into this
78 * array.
79 */
80static const char **used_atom;
81static cmp_type *used_atom_type;
82static int used_atom_cnt, sort_atom_limit, need_tagged;
83/*
85 * Used to parse format string and sort specifiers
86 */
87static int parse_atom(const char *atom, const char *ep)
88{
89 const char *sp;
90 int i, at;
91 sp = atom;
93 if (*sp == '*' && sp < ep)
94 sp++; /* deref */
95 if (ep <= sp)
96 die("malformed field name: %.*s", (int)(ep-atom), atom);
97 /* Do we have the atom already used elsewhere? */
99 for (i = 0; i < used_atom_cnt; i++) {
100 int len = strlen(used_atom[i]);
101 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
102 return i;
103 }
104 /* Is the atom a valid one? */
106 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
107 int len = strlen(valid_atom[i].name);
108 if (len == ep - sp && !memcmp(valid_atom[i].name, sp, len))
109 break;
110 }
111 if (ARRAY_SIZE(valid_atom) <= i)
113 die("unknown field name: %.*s", (int)(ep-atom), atom);
114 /* Add it in, including the deref prefix */
116 at = used_atom_cnt;
117 used_atom_cnt++;
118 used_atom = xrealloc(used_atom,
119 (sizeof *used_atom) * used_atom_cnt);
120 used_atom_type = xrealloc(used_atom_type,
121 (sizeof(*used_atom_type) * used_atom_cnt));
122 used_atom[at] = xmemdupz(atom, ep - atom);
123 used_atom_type[at] = valid_atom[i].cmp_type;
124 return at;
125}
126/*
128 * In a format string, find the next occurrence of %(atom).
129 */
130static const char *find_next(const char *cp)
131{
132 while (*cp) {
133 if (*cp == '%') {
134 /* %( is the start of an atom;
135 * %% is a quoted per-cent.
136 */
137 if (cp[1] == '(')
138 return cp;
139 else if (cp[1] == '%')
140 cp++; /* skip over two % */
141 /* otherwise this is a singleton, literal % */
142 }
143 cp++;
144 }
145 return NULL;
146}
147/*
149 * Make sure the format string is well formed, and parse out
150 * the used atoms.
151 */
152static void verify_format(const char *format)
153{
154 const char *cp, *sp;
155 for (cp = format; *cp && (sp = find_next(cp)); ) {
156 const char *ep = strchr(sp, ')');
157 if (!ep)
158 die("malformatted format string %s", sp);
159 /* sp points at "%(" and ep points at the closing ")" */
160 parse_atom(sp + 2, ep);
161 cp = ep + 1;
162 }
163}
164/*
166 * Given an object name, read the object data and size, and return a
167 * "struct object". If the object data we are returning is also borrowed
168 * by the "struct object" representation, set *eaten as well---it is a
169 * signal from parse_object_buffer to us not to free the buffer.
170 */
171static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
172{
173 enum object_type type;
174 void *buf = read_sha1_file(sha1, &type, sz);
175 if (buf)
177 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
178 else
179 *obj = NULL;
180 return buf;
181}
182/* See grab_values */
184static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
185{
186 int i;
187 for (i = 0; i < used_atom_cnt; i++) {
189 const char *name = used_atom[i];
190 struct atom_value *v = &val[i];
191 if (!!deref != (*name == '*'))
192 continue;
193 if (deref)
194 name++;
195 if (!strcmp(name, "objecttype"))
196 v->s = typename(obj->type);
197 else if (!strcmp(name, "objectsize")) {
198 char *s = xmalloc(40);
199 sprintf(s, "%lu", sz);
200 v->ul = sz;
201 v->s = s;
202 }
203 else if (!strcmp(name, "objectname")) {
204 char *s = xmalloc(41);
205 strcpy(s, sha1_to_hex(obj->sha1));
206 v->s = s;
207 }
208 }
209}
210/* See grab_values */
212static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
213{
214 int i;
215 struct tag *tag = (struct tag *) obj;
216 for (i = 0; i < used_atom_cnt; i++) {
218 const char *name = used_atom[i];
219 struct atom_value *v = &val[i];
220 if (!!deref != (*name == '*'))
221 continue;
222 if (deref)
223 name++;
224 if (!strcmp(name, "tag"))
225 v->s = tag->tag;
226 }
227}
228static int num_parents(struct commit *commit)
230{
231 struct commit_list *parents;
232 int i;
233 for (i = 0, parents = commit->parents;
235 parents;
236 parents = parents->next)
237 i++;
238 return i;
239}
240/* See grab_values */
242static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
243{
244 int i;
245 struct commit *commit = (struct commit *) obj;
246 for (i = 0; i < used_atom_cnt; i++) {
248 const char *name = used_atom[i];
249 struct atom_value *v = &val[i];
250 if (!!deref != (*name == '*'))
251 continue;
252 if (deref)
253 name++;
254 if (!strcmp(name, "tree")) {
255 char *s = xmalloc(41);
256 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
257 v->s = s;
258 }
259 if (!strcmp(name, "numparent")) {
260 char *s = xmalloc(40);
261 sprintf(s, "%lu", v->ul);
262 v->s = s;
263 v->ul = num_parents(commit);
264 }
265 else if (!strcmp(name, "parent")) {
266 int num = num_parents(commit);
267 int i;
268 struct commit_list *parents;
269 char *s = xmalloc(42 * num);
270 v->s = s;
271 for (i = 0, parents = commit->parents;
272 parents;
273 parents = parents->next, i = i + 42) {
274 struct commit *parent = parents->item;
275 strcpy(s+i, sha1_to_hex(parent->object.sha1));
276 if (parents->next)
277 s[i+40] = ' ';
278 }
279 }
280 }
281}
282static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
284{
285 const char *eol;
286 while (*buf) {
287 if (!strncmp(buf, who, wholen) &&
288 buf[wholen] == ' ')
289 return buf + wholen + 1;
290 eol = strchr(buf, '\n');
291 if (!eol)
292 return "";
293 eol++;
294 if (eol[1] == '\n')
295 return ""; /* end of header */
296 buf = eol;
297 }
298 return "";
299}
300static const char *copy_line(const char *buf)
302{
303 const char *eol = strchr(buf, '\n');
304 if (!eol)
305 return "";
306 return xmemdupz(buf, eol - buf);
307}
308static const char *copy_name(const char *buf)
310{
311 const char *cp;
312 for (cp = buf; *cp && *cp != '\n'; cp++) {
313 if (!strncmp(cp, " <", 2))
314 return xmemdupz(buf, cp - buf);
315 }
316 return "";
317}
318static const char *copy_email(const char *buf)
320{
321 const char *email = strchr(buf, '<');
322 const char *eoemail = strchr(email, '>');
323 if (!email || !eoemail)
324 return "";
325 return xmemdupz(email, eoemail + 1 - email);
326}
327static void grab_date(const char *buf, struct atom_value *v)
329{
330 const char *eoemail = strstr(buf, "> ");
331 char *zone;
332 unsigned long timestamp;
333 long tz;
334 if (!eoemail)
336 goto bad;
337 timestamp = strtoul(eoemail + 2, &zone, 10);
338 if (timestamp == ULONG_MAX)
339 goto bad;
340 tz = strtol(zone, NULL, 10);
341 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
342 goto bad;
343 v->s = xstrdup(show_date(timestamp, tz, 0));
344 v->ul = timestamp;
345 return;
346 bad:
347 v->s = "";
348 v->ul = 0;
349}
350/* See grab_values */
352static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
353{
354 int i;
355 int wholen = strlen(who);
356 const char *wholine = NULL;
357 for (i = 0; i < used_atom_cnt; i++) {
359 const char *name = used_atom[i];
360 struct atom_value *v = &val[i];
361 if (!!deref != (*name == '*'))
362 continue;
363 if (deref)
364 name++;
365 if (strncmp(who, name, wholen))
366 continue;
367 if (name[wholen] != 0 &&
368 strcmp(name + wholen, "name") &&
369 strcmp(name + wholen, "email") &&
370 strcmp(name + wholen, "date"))
371 continue;
372 if (!wholine)
373 wholine = find_wholine(who, wholen, buf, sz);
374 if (!wholine)
375 return; /* no point looking for it */
376 if (name[wholen] == 0)
377 v->s = copy_line(wholine);
378 else if (!strcmp(name + wholen, "name"))
379 v->s = copy_name(wholine);
380 else if (!strcmp(name + wholen, "email"))
381 v->s = copy_email(wholine);
382 else if (!strcmp(name + wholen, "date"))
383 grab_date(wholine, v);
384 }
385 /* For a tag or a commit object, if "creator" or "creatordate" is
387 * requested, do something special.
388 */
389 if (strcmp(who, "tagger") && strcmp(who, "committer"))
390 return; /* "author" for commit object is not wanted */
391 if (!wholine)
392 wholine = find_wholine(who, wholen, buf, sz);
393 if (!wholine)
394 return;
395 for (i = 0; i < used_atom_cnt; i++) {
396 const char *name = used_atom[i];
397 struct atom_value *v = &val[i];
398 if (!!deref != (*name == '*'))
399 continue;
400 if (deref)
401 name++;
402 if (!strcmp(name, "creatordate"))
404 grab_date(wholine, v);
405 else if (!strcmp(name, "creator"))
406 v->s = copy_line(wholine);
407 }
408}
409static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
411{
412 while (*buf) {
413 const char *eol = strchr(buf, '\n');
414 if (!eol)
415 return;
416 if (eol[1] == '\n') {
417 buf = eol + 1;
418 break; /* found end of header */
419 }
420 buf = eol + 1;
421 }
422 while (*buf == '\n')
423 buf++;
424 if (!*buf)
425 return;
426 *sub = buf; /* first non-empty line */
427 buf = strchr(buf, '\n');
428 if (!buf)
429 return; /* no body */
430 while (*buf == '\n')
431 buf++; /* skip blank between subject and body */
432 *body = buf;
433}
434/* See grab_values */
436static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
437{
438 int i;
439 const char *subpos = NULL, *bodypos = NULL;
440 for (i = 0; i < used_atom_cnt; i++) {
442 const char *name = used_atom[i];
443 struct atom_value *v = &val[i];
444 if (!!deref != (*name == '*'))
445 continue;
446 if (deref)
447 name++;
448 if (strcmp(name, "subject") &&
449 strcmp(name, "body") &&
450 strcmp(name, "contents"))
451 continue;
452 if (!subpos)
453 find_subpos(buf, sz, &subpos, &bodypos);
454 if (!subpos)
455 return;
456 if (!strcmp(name, "subject"))
458 v->s = copy_line(subpos);
459 else if (!strcmp(name, "body"))
460 v->s = xstrdup(bodypos);
461 else if (!strcmp(name, "contents"))
462 v->s = xstrdup(subpos);
463 }
464}
465/* We want to have empty print-string for field requests
467 * that do not apply (e.g. "authordate" for a tag object)
468 */
469static void fill_missing_values(struct atom_value *val)
470{
471 int i;
472 for (i = 0; i < used_atom_cnt; i++) {
473 struct atom_value *v = &val[i];
474 if (v->s == NULL)
475 v->s = "";
476 }
477}
478/*
480 * val is a list of atom_value to hold returned values. Extract
481 * the values for atoms in used_atom array out of (obj, buf, sz).
482 * when deref is false, (obj, buf, sz) is the object that is
483 * pointed at by the ref itself; otherwise it is the object the
484 * ref (which is a tag) refers to.
485 */
486static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
487{
488 grab_common_values(val, deref, obj, buf, sz);
489 switch (obj->type) {
490 case OBJ_TAG:
491 grab_tag_values(val, deref, obj, buf, sz);
492 grab_sub_body_contents(val, deref, obj, buf, sz);
493 grab_person("tagger", val, deref, obj, buf, sz);
494 break;
495 case OBJ_COMMIT:
496 grab_commit_values(val, deref, obj, buf, sz);
497 grab_sub_body_contents(val, deref, obj, buf, sz);
498 grab_person("author", val, deref, obj, buf, sz);
499 grab_person("committer", val, deref, obj, buf, sz);
500 break;
501 case OBJ_TREE:
502 // grab_tree_values(val, deref, obj, buf, sz);
503 break;
504 case OBJ_BLOB:
505 // grab_blob_values(val, deref, obj, buf, sz);
506 break;
507 default:
508 die("Eh? Object of type %d?", obj->type);
509 }
510}
511/*
513 * Parse the object referred by ref, and grab needed value.
514 */
515static void populate_value(struct refinfo *ref)
516{
517 void *buf;
518 struct object *obj;
519 int eaten, i;
520 unsigned long size;
521 const unsigned char *tagged;
522 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
524 buf = get_obj(ref->objectname, &obj, &size, &eaten);
526 if (!buf)
527 die("missing object %s for %s",
528 sha1_to_hex(ref->objectname), ref->refname);
529 if (!obj)
530 die("parse_object_buffer failed on %s for %s",
531 sha1_to_hex(ref->objectname), ref->refname);
532 /* Fill in specials first */
534 for (i = 0; i < used_atom_cnt; i++) {
535 const char *name = used_atom[i];
536 struct atom_value *v = &ref->value[i];
537 if (!strcmp(name, "refname"))
538 v->s = ref->refname;
539 else if (!strcmp(name, "*refname")) {
540 int len = strlen(ref->refname);
541 char *s = xmalloc(len + 4);
542 sprintf(s, "%s^{}", ref->refname);
543 v->s = s;
544 }
545 }
546 grab_values(ref->value, 0, obj, buf, size);
548 if (!eaten)
549 free(buf);
550 /* If there is no atom that wants to know about tagged
552 * object, we are done.
553 */
554 if (!need_tagged || (obj->type != OBJ_TAG))
555 return;
556 /* If it is a tag object, see if we use a value that derefs
558 * the object, and if we do grab the object it refers to.
559 */
560 tagged = ((struct tag *)obj)->tagged->sha1;
561 /* NEEDSWORK: This derefs tag only once, which
563 * is good to deal with chains of trust, but
564 * is not consistent with what deref_tag() does
565 * which peels the onion to the core.
566 */
567 buf = get_obj(tagged, &obj, &size, &eaten);
568 if (!buf)
569 die("missing object %s for %s",
570 sha1_to_hex(tagged), ref->refname);
571 if (!obj)
572 die("parse_object_buffer failed on %s for %s",
573 sha1_to_hex(tagged), ref->refname);
574 grab_values(ref->value, 1, obj, buf, size);
575 if (!eaten)
576 free(buf);
577}
578/*
580 * Given a ref, return the value for the atom. This lazily gets value
581 * out of the object by calling populate value.
582 */
583static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
584{
585 if (!ref->value) {
586 populate_value(ref);
587 fill_missing_values(ref->value);
588 }
589 *v = &ref->value[atom];
590}
591struct grab_ref_cbdata {
593 struct refinfo **grab_array;
594 const char **grab_pattern;
595 int grab_cnt;
596};
597/*
599 * A call-back given to for_each_ref(). It is unfortunate that we
600 * need to use global variables to pass extra information to this
601 * function.
602 */
603static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
604{
605 struct grab_ref_cbdata *cb = cb_data;
606 struct refinfo *ref;
607 int cnt;
608 if (*cb->grab_pattern) {
610 const char **pattern;
611 int namelen = strlen(refname);
612 for (pattern = cb->grab_pattern; *pattern; pattern++) {
613 const char *p = *pattern;
614 int plen = strlen(p);
615 if ((plen <= namelen) &&
617 !strncmp(refname, p, plen) &&
618 (refname[plen] == '\0' ||
619 refname[plen] == '/'))
620 break;
621 if (!fnmatch(p, refname, FNM_PATHNAME))
622 break;
623 }
624 if (!*pattern)
625 return 0;
626 }
627 /* We do not open the object yet; sort may only need refname
629 * to do its job and the resulting list may yet to be pruned
630 * by maxcount logic.
631 */
632 ref = xcalloc(1, sizeof(*ref));
633 ref->refname = xstrdup(refname);
634 hashcpy(ref->objectname, sha1);
635 cnt = cb->grab_cnt;
637 cb->grab_array = xrealloc(cb->grab_array,
638 sizeof(*cb->grab_array) * (cnt + 1));
639 cb->grab_array[cnt++] = ref;
640 cb->grab_cnt = cnt;
641 return 0;
642}
643static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
645{
646 struct atom_value *va, *vb;
647 int cmp;
648 cmp_type cmp_type = used_atom_type[s->atom];
649 get_value(a, s->atom, &va);
651 get_value(b, s->atom, &vb);
652 switch (cmp_type) {
653 case FIELD_STR:
654 cmp = strcmp(va->s, vb->s);
655 break;
656 default:
657 if (va->ul < vb->ul)
658 cmp = -1;
659 else if (va->ul == vb->ul)
660 cmp = 0;
661 else
662 cmp = 1;
663 break;
664 }
665 return (s->reverse) ? -cmp : cmp;
666}
667static struct ref_sort *ref_sort;
669static int compare_refs(const void *a_, const void *b_)
670{
671 struct refinfo *a = *((struct refinfo **)a_);
672 struct refinfo *b = *((struct refinfo **)b_);
673 struct ref_sort *s;
674 for (s = ref_sort; s; s = s->next) {
676 int cmp = cmp_ref_sort(s, a, b);
677 if (cmp)
678 return cmp;
679 }
680 return 0;
681}
682static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
684{
685 ref_sort = sort;
686 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
687}
688static void print_value(struct refinfo *ref, int atom, int quote_style)
690{
691 struct atom_value *v;
692 get_value(ref, atom, &v);
693 switch (quote_style) {
694 case QUOTE_NONE:
695 fputs(v->s, stdout);
696 break;
697 case QUOTE_SHELL:
698 sq_quote_print(stdout, v->s);
699 break;
700 case QUOTE_PERL:
701 perl_quote_print(stdout, v->s);
702 break;
703 case QUOTE_PYTHON:
704 python_quote_print(stdout, v->s);
705 break;
706 case QUOTE_TCL:
707 tcl_quote_print(stdout, v->s);
708 break;
709 }
710}
711static int hex1(char ch)
713{
714 if ('0' <= ch && ch <= '9')
715 return ch - '0';
716 else if ('a' <= ch && ch <= 'f')
717 return ch - 'a' + 10;
718 else if ('A' <= ch && ch <= 'F')
719 return ch - 'A' + 10;
720 return -1;
721}
722static int hex2(const char *cp)
723{
724 if (cp[0] && cp[1])
725 return (hex1(cp[0]) << 4) | hex1(cp[1]);
726 else
727 return -1;
728}
729static void emit(const char *cp, const char *ep)
731{
732 while (*cp && (!ep || cp < ep)) {
733 if (*cp == '%') {
734 if (cp[1] == '%')
735 cp++;
736 else {
737 int ch = hex2(cp + 1);
738 if (0 <= ch) {
739 putchar(ch);
740 cp += 3;
741 continue;
742 }
743 }
744 }
745 putchar(*cp);
746 cp++;
747 }
748}
749static void show_ref(struct refinfo *info, const char *format, int quote_style)
751{
752 const char *cp, *sp, *ep;
753 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
755 ep = strchr(sp, ')');
756 if (cp < sp)
757 emit(cp, sp);
758 print_value(info, parse_atom(sp + 2, ep), quote_style);
759 }
760 if (*cp) {
761 sp = cp + strlen(cp);
762 emit(cp, sp);
763 }
764 putchar('\n');
765}
766static struct ref_sort *default_sort(void)
768{
769 static const char cstr_name[] = "refname";
770 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
772 sort->next = NULL;
774 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
775 return sort;
776}
777int cmd_for_each_ref(int ac, const char **av, const char *prefix)
779{
780 int i, num_refs;
781 const char *format = NULL;
782 struct ref_sort *sort = NULL, **sort_tail = &sort;
783 int maxcount = 0;
784 int quote_style = -1; /* unspecified yet */
785 struct refinfo **refs;
786 struct grab_ref_cbdata cbdata;
787 for (i = 1; i < ac; i++) {
789 const char *arg = av[i];
790 if (arg[0] != '-')
791 break;
792 if (!strcmp(arg, "--")) {
793 i++;
794 break;
795 }
796 if (!prefixcmp(arg, "--format=")) {
797 if (format)
798 die("more than one --format?");
799 format = arg + 9;
800 continue;
801 }
802 if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) {
803 if (0 <= quote_style)
804 die("more than one quoting style?");
805 quote_style = QUOTE_SHELL;
806 continue;
807 }
808 if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) {
809 if (0 <= quote_style)
810 die("more than one quoting style?");
811 quote_style = QUOTE_PERL;
812 continue;
813 }
814 if (!strcmp(arg, "--python") ) {
815 if (0 <= quote_style)
816 die("more than one quoting style?");
817 quote_style = QUOTE_PYTHON;
818 continue;
819 }
820 if (!strcmp(arg, "--tcl") ) {
821 if (0 <= quote_style)
822 die("more than one quoting style?");
823 quote_style = QUOTE_TCL;
824 continue;
825 }
826 if (!prefixcmp(arg, "--count=")) {
827 if (maxcount)
828 die("more than one --count?");
829 maxcount = atoi(arg + 8);
830 if (maxcount <= 0)
831 die("The number %s did not parse", arg);
832 continue;
833 }
834 if (!prefixcmp(arg, "--sort=")) {
835 struct ref_sort *s = xcalloc(1, sizeof(*s));
836 int len;
837 s->next = NULL;
839 *sort_tail = s;
840 sort_tail = &s->next;
841 arg += 7;
843 if (*arg == '-') {
844 s->reverse = 1;
845 arg++;
846 }
847 len = strlen(arg);
848 sort->atom = parse_atom(arg, arg+len);
849 continue;
850 }
851 break;
852 }
853 if (quote_style < 0)
854 quote_style = QUOTE_NONE;
855 if (!sort)
857 sort = default_sort();
858 sort_atom_limit = used_atom_cnt;
859 if (!format)
860 format = "%(objectname) %(objecttype)\t%(refname)";
861 verify_format(format);
863 memset(&cbdata, 0, sizeof(cbdata));
865 cbdata.grab_pattern = av + i;
866 for_each_ref(grab_single_ref, &cbdata);
867 refs = cbdata.grab_array;
868 num_refs = cbdata.grab_cnt;
869 for (i = 0; i < used_atom_cnt; i++) {
871 if (used_atom[i][0] == '*') {
872 need_tagged = 1;
873 break;
874 }
875 }
876 sort_refs(sort, refs, num_refs);
878 if (!maxcount || num_refs < maxcount)
880 maxcount = num_refs;
881 for (i = 0; i < maxcount; i++)
882 show_ref(refs[i], format, quote_style);
883 return 0;
884}