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)
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)
360{
361 const char *eoemail = strstr(buf, "> ");
362 char *zone;
363 unsigned long timestamp;
364 long tz;
365 if (!eoemail)
367 goto bad;
368 timestamp = strtoul(eoemail + 2, &zone, 10);
369 if (timestamp == ULONG_MAX)
370 goto bad;
371 tz = strtol(zone, NULL, 10);
372 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
373 goto bad;
374 v->s = xstrdup(show_date(timestamp, tz, 0));
375 v->ul = timestamp;
376 return;
377 bad:
378 v->s = "";
379 v->ul = 0;
380}
381/* See grab_values */
383static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
384{
385 int i;
386 int wholen = strlen(who);
387 const char *wholine = NULL;
388 for (i = 0; i < used_atom_cnt; i++) {
390 const char *name = used_atom[i];
391 struct atom_value *v = &val[i];
392 if (!!deref != (*name == '*'))
393 continue;
394 if (deref)
395 name++;
396 if (strncmp(who, name, wholen))
397 continue;
398 if (name[wholen] != 0 &&
399 strcmp(name + wholen, "name") &&
400 strcmp(name + wholen, "email") &&
401 strcmp(name + wholen, "date"))
402 continue;
403 if (!wholine)
404 wholine = find_wholine(who, wholen, buf, sz);
405 if (!wholine)
406 return; /* no point looking for it */
407 if (name[wholen] == 0)
408 v->s = copy_line(wholine);
409 else if (!strcmp(name + wholen, "name"))
410 v->s = copy_name(wholine);
411 else if (!strcmp(name + wholen, "email"))
412 v->s = copy_email(wholine);
413 else if (!strcmp(name + wholen, "date"))
414 grab_date(wholine, v);
415 }
416 /* For a tag or a commit object, if "creator" or "creatordate" is
418 * requested, do something special.
419 */
420 if (strcmp(who, "tagger") && strcmp(who, "committer"))
421 return; /* "author" for commit object is not wanted */
422 if (!wholine)
423 wholine = find_wholine(who, wholen, buf, sz);
424 if (!wholine)
425 return;
426 for (i = 0; i < used_atom_cnt; i++) {
427 const char *name = used_atom[i];
428 struct atom_value *v = &val[i];
429 if (!!deref != (*name == '*'))
430 continue;
431 if (deref)
432 name++;
433 if (!strcmp(name, "creatordate"))
435 grab_date(wholine, v);
436 else if (!strcmp(name, "creator"))
437 v->s = copy_line(wholine);
438 }
439}
440static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
442{
443 while (*buf) {
444 const char *eol = strchr(buf, '\n');
445 if (!eol)
446 return;
447 if (eol[1] == '\n') {
448 buf = eol + 1;
449 break; /* found end of header */
450 }
451 buf = eol + 1;
452 }
453 while (*buf == '\n')
454 buf++;
455 if (!*buf)
456 return;
457 *sub = buf; /* first non-empty line */
458 buf = strchr(buf, '\n');
459 if (!buf)
460 return; /* no body */
461 while (*buf == '\n')
462 buf++; /* skip blank between subject and body */
463 *body = buf;
464}
465/* See grab_values */
467static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
468{
469 int i;
470 const char *subpos = NULL, *bodypos = NULL;
471 for (i = 0; i < used_atom_cnt; i++) {
473 const char *name = used_atom[i];
474 struct atom_value *v = &val[i];
475 if (!!deref != (*name == '*'))
476 continue;
477 if (deref)
478 name++;
479 if (strcmp(name, "subject") &&
480 strcmp(name, "body") &&
481 strcmp(name, "contents"))
482 continue;
483 if (!subpos)
484 find_subpos(buf, sz, &subpos, &bodypos);
485 if (!subpos)
486 return;
487 if (!strcmp(name, "subject"))
489 v->s = copy_line(subpos);
490 else if (!strcmp(name, "body"))
491 v->s = xstrdup(bodypos);
492 else if (!strcmp(name, "contents"))
493 v->s = xstrdup(subpos);
494 }
495}
496/* We want to have empty print-string for field requests
498 * that do not apply (e.g. "authordate" for a tag object)
499 */
500static void fill_missing_values(struct atom_value *val)
501{
502 int i;
503 for (i = 0; i < used_atom_cnt; i++) {
504 struct atom_value *v = &val[i];
505 if (v->s == NULL)
506 v->s = "";
507 }
508}
509/*
511 * val is a list of atom_value to hold returned values. Extract
512 * the values for atoms in used_atom array out of (obj, buf, sz).
513 * when deref is false, (obj, buf, sz) is the object that is
514 * pointed at by the ref itself; otherwise it is the object the
515 * ref (which is a tag) refers to.
516 */
517static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
518{
519 grab_common_values(val, deref, obj, buf, sz);
520 switch (obj->type) {
521 case OBJ_TAG:
522 grab_tag_values(val, deref, obj, buf, sz);
523 grab_sub_body_contents(val, deref, obj, buf, sz);
524 grab_person("tagger", val, deref, obj, buf, sz);
525 break;
526 case OBJ_COMMIT:
527 grab_commit_values(val, deref, obj, buf, sz);
528 grab_sub_body_contents(val, deref, obj, buf, sz);
529 grab_person("author", val, deref, obj, buf, sz);
530 grab_person("committer", val, deref, obj, buf, sz);
531 break;
532 case OBJ_TREE:
533 // grab_tree_values(val, deref, obj, buf, sz);
534 break;
535 case OBJ_BLOB:
536 // grab_blob_values(val, deref, obj, buf, sz);
537 break;
538 default:
539 die("Eh? Object of type %d?", obj->type);
540 }
541}
542/*
544 * Parse the object referred by ref, and grab needed value.
545 */
546static void populate_value(struct refinfo *ref)
547{
548 void *buf;
549 struct object *obj;
550 int eaten, i;
551 unsigned long size;
552 const unsigned char *tagged;
553 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
555 buf = get_obj(ref->objectname, &obj, &size, &eaten);
557 if (!buf)
558 die("missing object %s for %s",
559 sha1_to_hex(ref->objectname), ref->refname);
560 if (!obj)
561 die("parse_object_buffer failed on %s for %s",
562 sha1_to_hex(ref->objectname), ref->refname);
563 /* Fill in specials first */
565 for (i = 0; i < used_atom_cnt; i++) {
566 const char *name = used_atom[i];
567 struct atom_value *v = &ref->value[i];
568 if (!strcmp(name, "refname"))
569 v->s = ref->refname;
570 else if (!strcmp(name, "*refname")) {
571 int len = strlen(ref->refname);
572 char *s = xmalloc(len + 4);
573 sprintf(s, "%s^{}", ref->refname);
574 v->s = s;
575 }
576 }
577 grab_values(ref->value, 0, obj, buf, size);
579 if (!eaten)
580 free(buf);
581 /* If there is no atom that wants to know about tagged
583 * object, we are done.
584 */
585 if (!need_tagged || (obj->type != OBJ_TAG))
586 return;
587 /* If it is a tag object, see if we use a value that derefs
589 * the object, and if we do grab the object it refers to.
590 */
591 tagged = ((struct tag *)obj)->tagged->sha1;
592 /* NEEDSWORK: This derefs tag only once, which
594 * is good to deal with chains of trust, but
595 * is not consistent with what deref_tag() does
596 * which peels the onion to the core.
597 */
598 buf = get_obj(tagged, &obj, &size, &eaten);
599 if (!buf)
600 die("missing object %s for %s",
601 sha1_to_hex(tagged), ref->refname);
602 if (!obj)
603 die("parse_object_buffer failed on %s for %s",
604 sha1_to_hex(tagged), ref->refname);
605 grab_values(ref->value, 1, obj, buf, size);
606 if (!eaten)
607 free(buf);
608}
609/*
611 * Given a ref, return the value for the atom. This lazily gets value
612 * out of the object by calling populate value.
613 */
614static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
615{
616 if (!ref->value) {
617 populate_value(ref);
618 fill_missing_values(ref->value);
619 }
620 *v = &ref->value[atom];
621}
622struct grab_ref_cbdata {
624 struct refinfo **grab_array;
625 const char **grab_pattern;
626 int grab_cnt;
627};
628/*
630 * A call-back given to for_each_ref(). It is unfortunate that we
631 * need to use global variables to pass extra information to this
632 * function.
633 */
634static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
635{
636 struct grab_ref_cbdata *cb = cb_data;
637 struct refinfo *ref;
638 int cnt;
639 if (*cb->grab_pattern) {
641 const char **pattern;
642 int namelen = strlen(refname);
643 for (pattern = cb->grab_pattern; *pattern; pattern++) {
644 const char *p = *pattern;
645 int plen = strlen(p);
646 if ((plen <= namelen) &&
648 !strncmp(refname, p, plen) &&
649 (refname[plen] == '\0' ||
650 refname[plen] == '/'))
651 break;
652 if (!fnmatch(p, refname, FNM_PATHNAME))
653 break;
654 }
655 if (!*pattern)
656 return 0;
657 }
658 /* We do not open the object yet; sort may only need refname
660 * to do its job and the resulting list may yet to be pruned
661 * by maxcount logic.
662 */
663 ref = xcalloc(1, sizeof(*ref));
664 ref->refname = xstrdup(refname);
665 hashcpy(ref->objectname, sha1);
666 cnt = cb->grab_cnt;
668 cb->grab_array = xrealloc(cb->grab_array,
669 sizeof(*cb->grab_array) * (cnt + 1));
670 cb->grab_array[cnt++] = ref;
671 cb->grab_cnt = cnt;
672 return 0;
673}
674static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
676{
677 struct atom_value *va, *vb;
678 int cmp;
679 cmp_type cmp_type = used_atom_type[s->atom];
680 get_value(a, s->atom, &va);
682 get_value(b, s->atom, &vb);
683 switch (cmp_type) {
684 case FIELD_STR:
685 cmp = strcmp(va->s, vb->s);
686 break;
687 default:
688 if (va->ul < vb->ul)
689 cmp = -1;
690 else if (va->ul == vb->ul)
691 cmp = 0;
692 else
693 cmp = 1;
694 break;
695 }
696 return (s->reverse) ? -cmp : cmp;
697}
698static struct ref_sort *ref_sort;
700static int compare_refs(const void *a_, const void *b_)
701{
702 struct refinfo *a = *((struct refinfo **)a_);
703 struct refinfo *b = *((struct refinfo **)b_);
704 struct ref_sort *s;
705 for (s = ref_sort; s; s = s->next) {
707 int cmp = cmp_ref_sort(s, a, b);
708 if (cmp)
709 return cmp;
710 }
711 return 0;
712}
713static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
715{
716 ref_sort = sort;
717 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
718}
719static void print_value(struct refinfo *ref, int atom, int quote_style)
721{
722 struct atom_value *v;
723 get_value(ref, atom, &v);
724 switch (quote_style) {
725 case QUOTE_NONE:
726 fputs(v->s, stdout);
727 break;
728 case QUOTE_SHELL:
729 sq_quote_print(stdout, v->s);
730 break;
731 case QUOTE_PERL:
732 perl_quote_print(stdout, v->s);
733 break;
734 case QUOTE_PYTHON:
735 python_quote_print(stdout, v->s);
736 break;
737 case QUOTE_TCL:
738 tcl_quote_print(stdout, v->s);
739 break;
740 }
741}
742static int hex1(char ch)
744{
745 if ('0' <= ch && ch <= '9')
746 return ch - '0';
747 else if ('a' <= ch && ch <= 'f')
748 return ch - 'a' + 10;
749 else if ('A' <= ch && ch <= 'F')
750 return ch - 'A' + 10;
751 return -1;
752}
753static int hex2(const char *cp)
754{
755 if (cp[0] && cp[1])
756 return (hex1(cp[0]) << 4) | hex1(cp[1]);
757 else
758 return -1;
759}
760static void emit(const char *cp, const char *ep)
762{
763 while (*cp && (!ep || cp < ep)) {
764 if (*cp == '%') {
765 if (cp[1] == '%')
766 cp++;
767 else {
768 int ch = hex2(cp + 1);
769 if (0 <= ch) {
770 putchar(ch);
771 cp += 3;
772 continue;
773 }
774 }
775 }
776 putchar(*cp);
777 cp++;
778 }
779}
780static void show_ref(struct refinfo *info, const char *format, int quote_style)
782{
783 const char *cp, *sp, *ep;
784 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
786 ep = strchr(sp, ')');
787 if (cp < sp)
788 emit(cp, sp);
789 print_value(info, parse_atom(sp + 2, ep), quote_style);
790 }
791 if (*cp) {
792 sp = cp + strlen(cp);
793 emit(cp, sp);
794 }
795 putchar('\n');
796}
797static struct ref_sort *default_sort(void)
799{
800 static const char cstr_name[] = "refname";
801 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
803 sort->next = NULL;
805 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
806 return sort;
807}
808int cmd_for_each_ref(int ac, const char **av, const char *prefix)
810{
811 int i, num_refs;
812 const char *format = NULL;
813 struct ref_sort *sort = NULL, **sort_tail = &sort;
814 int maxcount = 0;
815 int quote_style = -1; /* unspecified yet */
816 struct refinfo **refs;
817 struct grab_ref_cbdata cbdata;
818 for (i = 1; i < ac; i++) {
820 const char *arg = av[i];
821 if (arg[0] != '-')
822 break;
823 if (!strcmp(arg, "--")) {
824 i++;
825 break;
826 }
827 if (!prefixcmp(arg, "--format=")) {
828 if (format)
829 die("more than one --format?");
830 format = arg + 9;
831 continue;
832 }
833 if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) {
834 if (0 <= quote_style)
835 die("more than one quoting style?");
836 quote_style = QUOTE_SHELL;
837 continue;
838 }
839 if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) {
840 if (0 <= quote_style)
841 die("more than one quoting style?");
842 quote_style = QUOTE_PERL;
843 continue;
844 }
845 if (!strcmp(arg, "--python") ) {
846 if (0 <= quote_style)
847 die("more than one quoting style?");
848 quote_style = QUOTE_PYTHON;
849 continue;
850 }
851 if (!strcmp(arg, "--tcl") ) {
852 if (0 <= quote_style)
853 die("more than one quoting style?");
854 quote_style = QUOTE_TCL;
855 continue;
856 }
857 if (!prefixcmp(arg, "--count=")) {
858 if (maxcount)
859 die("more than one --count?");
860 maxcount = atoi(arg + 8);
861 if (maxcount <= 0)
862 die("The number %s did not parse", arg);
863 continue;
864 }
865 if (!prefixcmp(arg, "--sort=")) {
866 struct ref_sort *s = xcalloc(1, sizeof(*s));
867 int len;
868 s->next = NULL;
870 *sort_tail = s;
871 sort_tail = &s->next;
872 arg += 7;
874 if (*arg == '-') {
875 s->reverse = 1;
876 arg++;
877 }
878 len = strlen(arg);
879 sort->atom = parse_atom(arg, arg+len);
880 continue;
881 }
882 break;
883 }
884 if (quote_style < 0)
885 quote_style = QUOTE_NONE;
886 if (!sort)
888 sort = default_sort();
889 sort_atom_limit = used_atom_cnt;
890 if (!format)
891 format = "%(objectname) %(objecttype)\t%(refname)";
892 verify_format(format);
894 memset(&cbdata, 0, sizeof(cbdata));
896 cbdata.grab_pattern = av + i;
897 for_each_ref(grab_single_ref, &cbdata);
898 refs = cbdata.grab_array;
899 num_refs = cbdata.grab_cnt;
900 for (i = 0; i < used_atom_cnt; i++) {
902 if (used_atom[i][0] == '*') {
903 need_tagged = 1;
904 break;
905 }
906 }
907 sort_refs(sort, refs, num_refs);
909 if (!maxcount || num_refs < maxcount)
911 maxcount = num_refs;
912 for (i = 0; i < maxcount; i++)
913 show_ref(refs[i], format, quote_style);
914 return 0;
915}