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 char *n;
91 int i, at;
92 sp = atom;
94 if (*sp == '*' && sp < ep)
95 sp++; /* deref */
96 if (ep <= sp)
97 die("malformed field name: %.*s", (int)(ep-atom), atom);
98 /* Do we have the atom already used elsewhere? */
100 for (i = 0; i < used_atom_cnt; i++) {
101 int len = strlen(used_atom[i]);
102 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
103 return i;
104 }
105 /* Is the atom a valid one? */
107 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
108 int len = strlen(valid_atom[i].name);
109 /*
110 * If the atom name has a colon, strip it and everything after
111 * it off - it specifies the format for this entry, and
112 * shouldn't be used for checking against the valid_atom
113 * table.
114 */
115 const char *formatp = strchr(sp, ':');
116 if (!formatp || ep < formatp)
117 formatp = ep;
118 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
119 break;
120 }
121 if (ARRAY_SIZE(valid_atom) <= i)
123 die("unknown field name: %.*s", (int)(ep-atom), atom);
124 /* Add it in, including the deref prefix */
126 at = used_atom_cnt;
127 used_atom_cnt++;
128 used_atom = xrealloc(used_atom,
129 (sizeof *used_atom) * used_atom_cnt);
130 used_atom_type = xrealloc(used_atom_type,
131 (sizeof(*used_atom_type) * used_atom_cnt));
132 n = xmalloc(ep - atom + 1);
133 memcpy(n, atom, ep - atom);
134 n[ep-atom] = 0;
135 used_atom[at] = n;
136 used_atom_type[at] = valid_atom[i].cmp_type;
137 return at;
138}
139/*
141 * In a format string, find the next occurrence of %(atom).
142 */
143static const char *find_next(const char *cp)
144{
145 while (*cp) {
146 if (*cp == '%') {
147 /* %( is the start of an atom;
148 * %% is a quoted per-cent.
149 */
150 if (cp[1] == '(')
151 return cp;
152 else if (cp[1] == '%')
153 cp++; /* skip over two % */
154 /* otherwise this is a singleton, literal % */
155 }
156 cp++;
157 }
158 return NULL;
159}
160/*
162 * Make sure the format string is well formed, and parse out
163 * the used atoms.
164 */
165static void verify_format(const char *format)
166{
167 const char *cp, *sp;
168 for (cp = format; *cp && (sp = find_next(cp)); ) {
169 const char *ep = strchr(sp, ')');
170 if (!ep)
171 die("malformatted format string %s", sp);
172 /* sp points at "%(" and ep points at the closing ")" */
173 parse_atom(sp + 2, ep);
174 cp = ep + 1;
175 }
176}
177/*
179 * Given an object name, read the object data and size, and return a
180 * "struct object". If the object data we are returning is also borrowed
181 * by the "struct object" representation, set *eaten as well---it is a
182 * signal from parse_object_buffer to us not to free the buffer.
183 */
184static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
185{
186 enum object_type type;
187 void *buf = read_sha1_file(sha1, &type, sz);
188 if (buf)
190 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
191 else
192 *obj = NULL;
193 return buf;
194}
195/* See grab_values */
197static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
198{
199 int i;
200 for (i = 0; i < used_atom_cnt; i++) {
202 const char *name = used_atom[i];
203 struct atom_value *v = &val[i];
204 if (!!deref != (*name == '*'))
205 continue;
206 if (deref)
207 name++;
208 if (!strcmp(name, "objecttype"))
209 v->s = typename(obj->type);
210 else if (!strcmp(name, "objectsize")) {
211 char *s = xmalloc(40);
212 sprintf(s, "%lu", sz);
213 v->ul = sz;
214 v->s = s;
215 }
216 else if (!strcmp(name, "objectname")) {
217 char *s = xmalloc(41);
218 strcpy(s, sha1_to_hex(obj->sha1));
219 v->s = s;
220 }
221 }
222}
223/* See grab_values */
225static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
226{
227 int i;
228 struct tag *tag = (struct tag *) obj;
229 for (i = 0; i < used_atom_cnt; i++) {
231 const char *name = used_atom[i];
232 struct atom_value *v = &val[i];
233 if (!!deref != (*name == '*'))
234 continue;
235 if (deref)
236 name++;
237 if (!strcmp(name, "tag"))
238 v->s = tag->tag;
239 }
240}
241static int num_parents(struct commit *commit)
243{
244 struct commit_list *parents;
245 int i;
246 for (i = 0, parents = commit->parents;
248 parents;
249 parents = parents->next)
250 i++;
251 return i;
252}
253/* See grab_values */
255static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
256{
257 int i;
258 struct commit *commit = (struct commit *) obj;
259 for (i = 0; i < used_atom_cnt; i++) {
261 const char *name = used_atom[i];
262 struct atom_value *v = &val[i];
263 if (!!deref != (*name == '*'))
264 continue;
265 if (deref)
266 name++;
267 if (!strcmp(name, "tree")) {
268 char *s = xmalloc(41);
269 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
270 v->s = s;
271 }
272 if (!strcmp(name, "numparent")) {
273 char *s = xmalloc(40);
274 sprintf(s, "%lu", v->ul);
275 v->s = s;
276 v->ul = num_parents(commit);
277 }
278 else if (!strcmp(name, "parent")) {
279 int num = num_parents(commit);
280 int i;
281 struct commit_list *parents;
282 char *s = xmalloc(42 * num);
283 v->s = s;
284 for (i = 0, parents = commit->parents;
285 parents;
286 parents = parents->next, i = i + 42) {
287 struct commit *parent = parents->item;
288 strcpy(s+i, sha1_to_hex(parent->object.sha1));
289 if (parents->next)
290 s[i+40] = ' ';
291 }
292 }
293 }
294}
295static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
297{
298 const char *eol;
299 while (*buf) {
300 if (!strncmp(buf, who, wholen) &&
301 buf[wholen] == ' ')
302 return buf + wholen + 1;
303 eol = strchr(buf, '\n');
304 if (!eol)
305 return "";
306 eol++;
307 if (eol[1] == '\n')
308 return ""; /* end of header */
309 buf = eol;
310 }
311 return "";
312}
313static const char *copy_line(const char *buf)
315{
316 const char *eol = strchr(buf, '\n');
317 char *line;
318 int len;
319 if (!eol)
320 return "";
321 len = eol - buf;
322 line = xmalloc(len + 1);
323 memcpy(line, buf, len);
324 line[len] = 0;
325 return line;
326}
327static const char *copy_name(const char *buf)
329{
330 const char *eol = strchr(buf, '\n');
331 const char *eoname = strstr(buf, " <");
332 char *line;
333 int len;
334 if (!(eoname && eol && eoname < eol))
335 return "";
336 len = eoname - buf;
337 line = xmalloc(len + 1);
338 memcpy(line, buf, len);
339 line[len] = 0;
340 return line;
341}
342static const char *copy_email(const char *buf)
344{
345 const char *email = strchr(buf, '<');
346 const char *eoemail = strchr(email, '>');
347 char *line;
348 int len;
349 if (!email || !eoemail)
350 return "";
351 eoemail++;
352 len = eoemail - email;
353 line = xmalloc(len + 1);
354 memcpy(line, email, len);
355 line[len] = 0;
356 return line;
357}
358static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
360{
361 const char *eoemail = strstr(buf, "> ");
362 char *zone;
363 unsigned long timestamp;
364 long tz;
365 enum date_mode date_mode = DATE_NORMAL;
366 const char *formatp;
367 /*
369 * We got here because atomname ends in "date" or "date<something>";
370 * it's not possible that <something> is not ":<format>" because
371 * parse_atom() wouldn't have allowed it, so we can assume that no
372 * ":" means no format is specified, and use the default.
373 */
374 formatp = strchr(atomname, ':');
375 if (formatp != NULL) {
376 formatp++;
377 date_mode = parse_date_format(formatp);
378 }
379 if (!eoemail)
381 goto bad;
382 timestamp = strtoul(eoemail + 2, &zone, 10);
383 if (timestamp == ULONG_MAX)
384 goto bad;
385 tz = strtol(zone, NULL, 10);
386 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
387 goto bad;
388 v->s = xstrdup(show_date(timestamp, tz, date_mode));
389 v->ul = timestamp;
390 return;
391 bad:
392 v->s = "";
393 v->ul = 0;
394}
395/* See grab_values */
397static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
398{
399 int i;
400 int wholen = strlen(who);
401 const char *wholine = NULL;
402 for (i = 0; i < used_atom_cnt; i++) {
404 const char *name = used_atom[i];
405 struct atom_value *v = &val[i];
406 if (!!deref != (*name == '*'))
407 continue;
408 if (deref)
409 name++;
410 if (strncmp(who, name, wholen))
411 continue;
412 if (name[wholen] != 0 &&
413 strcmp(name + wholen, "name") &&
414 strcmp(name + wholen, "email") &&
415 prefixcmp(name + wholen, "date"))
416 continue;
417 if (!wholine)
418 wholine = find_wholine(who, wholen, buf, sz);
419 if (!wholine)
420 return; /* no point looking for it */
421 if (name[wholen] == 0)
422 v->s = copy_line(wholine);
423 else if (!strcmp(name + wholen, "name"))
424 v->s = copy_name(wholine);
425 else if (!strcmp(name + wholen, "email"))
426 v->s = copy_email(wholine);
427 else if (!prefixcmp(name + wholen, "date"))
428 grab_date(wholine, v, name);
429 }
430 /* For a tag or a commit object, if "creator" or "creatordate" is
432 * requested, do something special.
433 */
434 if (strcmp(who, "tagger") && strcmp(who, "committer"))
435 return; /* "author" for commit object is not wanted */
436 if (!wholine)
437 wholine = find_wholine(who, wholen, buf, sz);
438 if (!wholine)
439 return;
440 for (i = 0; i < used_atom_cnt; i++) {
441 const char *name = used_atom[i];
442 struct atom_value *v = &val[i];
443 if (!!deref != (*name == '*'))
444 continue;
445 if (deref)
446 name++;
447 if (!prefixcmp(name, "creatordate"))
449 grab_date(wholine, v, name);
450 else if (!strcmp(name, "creator"))
451 v->s = copy_line(wholine);
452 }
453}
454static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
456{
457 while (*buf) {
458 const char *eol = strchr(buf, '\n');
459 if (!eol)
460 return;
461 if (eol[1] == '\n') {
462 buf = eol + 1;
463 break; /* found end of header */
464 }
465 buf = eol + 1;
466 }
467 while (*buf == '\n')
468 buf++;
469 if (!*buf)
470 return;
471 *sub = buf; /* first non-empty line */
472 buf = strchr(buf, '\n');
473 if (!buf)
474 return; /* no body */
475 while (*buf == '\n')
476 buf++; /* skip blank between subject and body */
477 *body = buf;
478}
479/* See grab_values */
481static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
482{
483 int i;
484 const char *subpos = NULL, *bodypos = NULL;
485 for (i = 0; i < used_atom_cnt; i++) {
487 const char *name = used_atom[i];
488 struct atom_value *v = &val[i];
489 if (!!deref != (*name == '*'))
490 continue;
491 if (deref)
492 name++;
493 if (strcmp(name, "subject") &&
494 strcmp(name, "body") &&
495 strcmp(name, "contents"))
496 continue;
497 if (!subpos)
498 find_subpos(buf, sz, &subpos, &bodypos);
499 if (!subpos)
500 return;
501 if (!strcmp(name, "subject"))
503 v->s = copy_line(subpos);
504 else if (!strcmp(name, "body"))
505 v->s = xstrdup(bodypos);
506 else if (!strcmp(name, "contents"))
507 v->s = xstrdup(subpos);
508 }
509}
510/* We want to have empty print-string for field requests
512 * that do not apply (e.g. "authordate" for a tag object)
513 */
514static void fill_missing_values(struct atom_value *val)
515{
516 int i;
517 for (i = 0; i < used_atom_cnt; i++) {
518 struct atom_value *v = &val[i];
519 if (v->s == NULL)
520 v->s = "";
521 }
522}
523/*
525 * val is a list of atom_value to hold returned values. Extract
526 * the values for atoms in used_atom array out of (obj, buf, sz).
527 * when deref is false, (obj, buf, sz) is the object that is
528 * pointed at by the ref itself; otherwise it is the object the
529 * ref (which is a tag) refers to.
530 */
531static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
532{
533 grab_common_values(val, deref, obj, buf, sz);
534 switch (obj->type) {
535 case OBJ_TAG:
536 grab_tag_values(val, deref, obj, buf, sz);
537 grab_sub_body_contents(val, deref, obj, buf, sz);
538 grab_person("tagger", val, deref, obj, buf, sz);
539 break;
540 case OBJ_COMMIT:
541 grab_commit_values(val, deref, obj, buf, sz);
542 grab_sub_body_contents(val, deref, obj, buf, sz);
543 grab_person("author", val, deref, obj, buf, sz);
544 grab_person("committer", val, deref, obj, buf, sz);
545 break;
546 case OBJ_TREE:
547 // grab_tree_values(val, deref, obj, buf, sz);
548 break;
549 case OBJ_BLOB:
550 // grab_blob_values(val, deref, obj, buf, sz);
551 break;
552 default:
553 die("Eh? Object of type %d?", obj->type);
554 }
555}
556/*
558 * Parse the object referred by ref, and grab needed value.
559 */
560static void populate_value(struct refinfo *ref)
561{
562 void *buf;
563 struct object *obj;
564 int eaten, i;
565 unsigned long size;
566 const unsigned char *tagged;
567 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
569 buf = get_obj(ref->objectname, &obj, &size, &eaten);
571 if (!buf)
572 die("missing object %s for %s",
573 sha1_to_hex(ref->objectname), ref->refname);
574 if (!obj)
575 die("parse_object_buffer failed on %s for %s",
576 sha1_to_hex(ref->objectname), ref->refname);
577 /* Fill in specials first */
579 for (i = 0; i < used_atom_cnt; i++) {
580 const char *name = used_atom[i];
581 struct atom_value *v = &ref->value[i];
582 if (!strcmp(name, "refname"))
583 v->s = ref->refname;
584 else if (!strcmp(name, "*refname")) {
585 int len = strlen(ref->refname);
586 char *s = xmalloc(len + 4);
587 sprintf(s, "%s^{}", ref->refname);
588 v->s = s;
589 }
590 }
591 grab_values(ref->value, 0, obj, buf, size);
593 if (!eaten)
594 free(buf);
595 /* If there is no atom that wants to know about tagged
597 * object, we are done.
598 */
599 if (!need_tagged || (obj->type != OBJ_TAG))
600 return;
601 /* If it is a tag object, see if we use a value that derefs
603 * the object, and if we do grab the object it refers to.
604 */
605 tagged = ((struct tag *)obj)->tagged->sha1;
606 /* NEEDSWORK: This derefs tag only once, which
608 * is good to deal with chains of trust, but
609 * is not consistent with what deref_tag() does
610 * which peels the onion to the core.
611 */
612 buf = get_obj(tagged, &obj, &size, &eaten);
613 if (!buf)
614 die("missing object %s for %s",
615 sha1_to_hex(tagged), ref->refname);
616 if (!obj)
617 die("parse_object_buffer failed on %s for %s",
618 sha1_to_hex(tagged), ref->refname);
619 grab_values(ref->value, 1, obj, buf, size);
620 if (!eaten)
621 free(buf);
622}
623/*
625 * Given a ref, return the value for the atom. This lazily gets value
626 * out of the object by calling populate value.
627 */
628static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
629{
630 if (!ref->value) {
631 populate_value(ref);
632 fill_missing_values(ref->value);
633 }
634 *v = &ref->value[atom];
635}
636struct grab_ref_cbdata {
638 struct refinfo **grab_array;
639 const char **grab_pattern;
640 int grab_cnt;
641};
642/*
644 * A call-back given to for_each_ref(). It is unfortunate that we
645 * need to use global variables to pass extra information to this
646 * function.
647 */
648static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
649{
650 struct grab_ref_cbdata *cb = cb_data;
651 struct refinfo *ref;
652 int cnt;
653 if (*cb->grab_pattern) {
655 const char **pattern;
656 int namelen = strlen(refname);
657 for (pattern = cb->grab_pattern; *pattern; pattern++) {
658 const char *p = *pattern;
659 int plen = strlen(p);
660 if ((plen <= namelen) &&
662 !strncmp(refname, p, plen) &&
663 (refname[plen] == '\0' ||
664 refname[plen] == '/'))
665 break;
666 if (!fnmatch(p, refname, FNM_PATHNAME))
667 break;
668 }
669 if (!*pattern)
670 return 0;
671 }
672 /* We do not open the object yet; sort may only need refname
674 * to do its job and the resulting list may yet to be pruned
675 * by maxcount logic.
676 */
677 ref = xcalloc(1, sizeof(*ref));
678 ref->refname = xstrdup(refname);
679 hashcpy(ref->objectname, sha1);
680 cnt = cb->grab_cnt;
682 cb->grab_array = xrealloc(cb->grab_array,
683 sizeof(*cb->grab_array) * (cnt + 1));
684 cb->grab_array[cnt++] = ref;
685 cb->grab_cnt = cnt;
686 return 0;
687}
688static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
690{
691 struct atom_value *va, *vb;
692 int cmp;
693 cmp_type cmp_type = used_atom_type[s->atom];
694 get_value(a, s->atom, &va);
696 get_value(b, s->atom, &vb);
697 switch (cmp_type) {
698 case FIELD_STR:
699 cmp = strcmp(va->s, vb->s);
700 break;
701 default:
702 if (va->ul < vb->ul)
703 cmp = -1;
704 else if (va->ul == vb->ul)
705 cmp = 0;
706 else
707 cmp = 1;
708 break;
709 }
710 return (s->reverse) ? -cmp : cmp;
711}
712static struct ref_sort *ref_sort;
714static int compare_refs(const void *a_, const void *b_)
715{
716 struct refinfo *a = *((struct refinfo **)a_);
717 struct refinfo *b = *((struct refinfo **)b_);
718 struct ref_sort *s;
719 for (s = ref_sort; s; s = s->next) {
721 int cmp = cmp_ref_sort(s, a, b);
722 if (cmp)
723 return cmp;
724 }
725 return 0;
726}
727static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
729{
730 ref_sort = sort;
731 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
732}
733static void print_value(struct refinfo *ref, int atom, int quote_style)
735{
736 struct atom_value *v;
737 get_value(ref, atom, &v);
738 switch (quote_style) {
739 case QUOTE_NONE:
740 fputs(v->s, stdout);
741 break;
742 case QUOTE_SHELL:
743 sq_quote_print(stdout, v->s);
744 break;
745 case QUOTE_PERL:
746 perl_quote_print(stdout, v->s);
747 break;
748 case QUOTE_PYTHON:
749 python_quote_print(stdout, v->s);
750 break;
751 case QUOTE_TCL:
752 tcl_quote_print(stdout, v->s);
753 break;
754 }
755}
756static int hex1(char ch)
758{
759 if ('0' <= ch && ch <= '9')
760 return ch - '0';
761 else if ('a' <= ch && ch <= 'f')
762 return ch - 'a' + 10;
763 else if ('A' <= ch && ch <= 'F')
764 return ch - 'A' + 10;
765 return -1;
766}
767static int hex2(const char *cp)
768{
769 if (cp[0] && cp[1])
770 return (hex1(cp[0]) << 4) | hex1(cp[1]);
771 else
772 return -1;
773}
774static void emit(const char *cp, const char *ep)
776{
777 while (*cp && (!ep || cp < ep)) {
778 if (*cp == '%') {
779 if (cp[1] == '%')
780 cp++;
781 else {
782 int ch = hex2(cp + 1);
783 if (0 <= ch) {
784 putchar(ch);
785 cp += 3;
786 continue;
787 }
788 }
789 }
790 putchar(*cp);
791 cp++;
792 }
793}
794static void show_ref(struct refinfo *info, const char *format, int quote_style)
796{
797 const char *cp, *sp, *ep;
798 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
800 ep = strchr(sp, ')');
801 if (cp < sp)
802 emit(cp, sp);
803 print_value(info, parse_atom(sp + 2, ep), quote_style);
804 }
805 if (*cp) {
806 sp = cp + strlen(cp);
807 emit(cp, sp);
808 }
809 putchar('\n');
810}
811static struct ref_sort *default_sort(void)
813{
814 static const char cstr_name[] = "refname";
815 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
817 sort->next = NULL;
819 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
820 return sort;
821}
822int cmd_for_each_ref(int ac, const char **av, const char *prefix)
824{
825 int i, num_refs;
826 const char *format = NULL;
827 struct ref_sort *sort = NULL, **sort_tail = &sort;
828 int maxcount = 0;
829 int quote_style = -1; /* unspecified yet */
830 struct refinfo **refs;
831 struct grab_ref_cbdata cbdata;
832 for (i = 1; i < ac; i++) {
834 const char *arg = av[i];
835 if (arg[0] != '-')
836 break;
837 if (!strcmp(arg, "--")) {
838 i++;
839 break;
840 }
841 if (!prefixcmp(arg, "--format=")) {
842 if (format)
843 die("more than one --format?");
844 format = arg + 9;
845 continue;
846 }
847 if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) {
848 if (0 <= quote_style)
849 die("more than one quoting style?");
850 quote_style = QUOTE_SHELL;
851 continue;
852 }
853 if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) {
854 if (0 <= quote_style)
855 die("more than one quoting style?");
856 quote_style = QUOTE_PERL;
857 continue;
858 }
859 if (!strcmp(arg, "--python") ) {
860 if (0 <= quote_style)
861 die("more than one quoting style?");
862 quote_style = QUOTE_PYTHON;
863 continue;
864 }
865 if (!strcmp(arg, "--tcl") ) {
866 if (0 <= quote_style)
867 die("more than one quoting style?");
868 quote_style = QUOTE_TCL;
869 continue;
870 }
871 if (!prefixcmp(arg, "--count=")) {
872 if (maxcount)
873 die("more than one --count?");
874 maxcount = atoi(arg + 8);
875 if (maxcount <= 0)
876 die("The number %s did not parse", arg);
877 continue;
878 }
879 if (!prefixcmp(arg, "--sort=")) {
880 struct ref_sort *s = xcalloc(1, sizeof(*s));
881 int len;
882 s->next = NULL;
884 *sort_tail = s;
885 sort_tail = &s->next;
886 arg += 7;
888 if (*arg == '-') {
889 s->reverse = 1;
890 arg++;
891 }
892 len = strlen(arg);
893 sort->atom = parse_atom(arg, arg+len);
894 continue;
895 }
896 break;
897 }
898 if (quote_style < 0)
899 quote_style = QUOTE_NONE;
900 if (!sort)
902 sort = default_sort();
903 sort_atom_limit = used_atom_cnt;
904 if (!format)
905 format = "%(objectname) %(objecttype)\t%(refname)";
906 verify_format(format);
908 memset(&cbdata, 0, sizeof(cbdata));
910 cbdata.grab_pattern = av + i;
911 for_each_ref(grab_single_ref, &cbdata);
912 refs = cbdata.grab_array;
913 num_refs = cbdata.grab_cnt;
914 for (i = 0; i < used_atom_cnt; i++) {
916 if (used_atom[i][0] == '*') {
917 need_tagged = 1;
918 break;
919 }
920 }
921 sort_refs(sort, refs, num_refs);
923 if (!maxcount || num_refs < maxcount)
925 maxcount = num_refs;
926 for (i = 0; i < maxcount; i++)
927 show_ref(refs[i], format, quote_style);
928 return 0;
929}