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Fix mis-backport of t7002
[git/dscho.git] / builtin-for-each-ref.c
blobd7cc8cafbfb4ea39e347828013b28d21cfe2be74
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 #include "parse-options.h"
11 #include "remote.h"
12
13 /* Quoting styles */
14 #define QUOTE_NONE 0
15 #define QUOTE_SHELL 1
16 #define QUOTE_PERL 2
17 #define QUOTE_PYTHON 4
18 #define QUOTE_TCL 8
19
20 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
21
22 struct atom_value {
23 const char *s;
24 unsigned long ul; /* used for sorting when not FIELD_STR */
25 };
26
27 struct ref_sort {
28 struct ref_sort *next;
29 int atom; /* index into used_atom array */
30 unsigned reverse : 1;
31 };
32
33 struct refinfo {
34 char *refname;
35 unsigned char objectname[20];
36 struct atom_value *value;
37 };
38
39 static struct {
40 const char *name;
41 cmp_type cmp_type;
42 } valid_atom[] = {
43 { "refname" },
44 { "objecttype" },
45 { "objectsize", FIELD_ULONG },
46 { "objectname" },
47 { "tree" },
48 { "parent" },
49 { "numparent", FIELD_ULONG },
50 { "object" },
51 { "type" },
52 { "tag" },
53 { "author" },
54 { "authorname" },
55 { "authoremail" },
56 { "authordate", FIELD_TIME },
57 { "committer" },
58 { "committername" },
59 { "committeremail" },
60 { "committerdate", FIELD_TIME },
61 { "tagger" },
62 { "taggername" },
63 { "taggeremail" },
64 { "taggerdate", FIELD_TIME },
65 { "creator" },
66 { "creatordate", FIELD_TIME },
67 { "subject" },
68 { "body" },
69 { "contents" },
70 { "upstream" },
71 };
72
73 /*
74 * An atom is a valid field atom listed above, possibly prefixed with
75 * a "*" to denote deref_tag().
76 *
77 * We parse given format string and sort specifiers, and make a list
78 * of properties that we need to extract out of objects. refinfo
79 * structure will hold an array of values extracted that can be
80 * indexed with the "atom number", which is an index into this
81 * array.
82 */
83 static const char **used_atom;
84 static cmp_type *used_atom_type;
85 static int used_atom_cnt, sort_atom_limit, need_tagged;
86
87 /*
88 * Used to parse format string and sort specifiers
89 */
90 static int parse_atom(const char *atom, const char *ep)
91 {
92 const char *sp;
93 int i, at;
94
95 sp = atom;
96 if (*sp == '*' && sp < ep)
97 sp++; /* deref */
98 if (ep <= sp)
99 die("malformed field name: %.*s", (int)(ep-atom), atom);
100
101 /* Do we have the atom already used elsewhere? */
102 for (i = 0; i < used_atom_cnt; i++) {
103 int len = strlen(used_atom[i]);
104 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
105 return i;
106 }
107
108 /* Is the atom a valid one? */
109 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
110 int len = strlen(valid_atom[i].name);
111 /*
112 * If the atom name has a colon, strip it and everything after
113 * it off - it specifies the format for this entry, and
114 * shouldn't be used for checking against the valid_atom
115 * table.
116 */
117 const char *formatp = strchr(sp, ':');
118 if (!formatp || ep < formatp)
119 formatp = ep;
120 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
121 break;
122 }
123
124 if (ARRAY_SIZE(valid_atom) <= i)
125 die("unknown field name: %.*s", (int)(ep-atom), atom);
126
127 /* Add it in, including the deref prefix */
128 at = used_atom_cnt;
129 used_atom_cnt++;
130 used_atom = xrealloc(used_atom,
131 (sizeof *used_atom) * used_atom_cnt);
132 used_atom_type = xrealloc(used_atom_type,
133 (sizeof(*used_atom_type) * used_atom_cnt));
134 used_atom[at] = xmemdupz(atom, ep - atom);
135 used_atom_type[at] = valid_atom[i].cmp_type;
136 return at;
137 }
138
139 /*
140 * In a format string, find the next occurrence of %(atom).
141 */
142 static const char *find_next(const char *cp)
143 {
144 while (*cp) {
145 if (*cp == '%') {
146 /* %( is the start of an atom;
147 * %% is a quoted per-cent.
148 */
149 if (cp[1] == '(')
150 return cp;
151 else if (cp[1] == '%')
152 cp++; /* skip over two % */
153 /* otherwise this is a singleton, literal % */
154 }
155 cp++;
156 }
157 return NULL;
158 }
159
160 /*
161 * Make sure the format string is well formed, and parse out
162 * the used atoms.
163 */
164 static int verify_format(const char *format)
165 {
166 const char *cp, *sp;
167 for (cp = format; *cp && (sp = find_next(cp)); ) {
168 const char *ep = strchr(sp, ')');
169 if (!ep)
170 return error("malformed format string %s", sp);
171 /* sp points at "%(" and ep points at the closing ")" */
172 parse_atom(sp + 2, ep);
173 cp = ep + 1;
174 }
175 return 0;
176 }
177
178 /*
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 */
184 static 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
189 if (buf)
190 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
191 else
192 *obj = NULL;
193 return buf;
194 }
195
196 /* See grab_values */
197 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
198 {
199 int i;
200
201 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
224 /* See grab_values */
225 static 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
230 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 else if (!strcmp(name, "type") && tag->tagged)
240 v->s = typename(tag->tagged->type);
241 else if (!strcmp(name, "object") && tag->tagged) {
242 char *s = xmalloc(41);
243 strcpy(s, sha1_to_hex(tag->tagged->sha1));
244 v->s = s;
245 }
246 }
247 }
248
249 static int num_parents(struct commit *commit)
250 {
251 struct commit_list *parents;
252 int i;
253
254 for (i = 0, parents = commit->parents;
255 parents;
256 parents = parents->next)
257 i++;
258 return i;
259 }
260
261 /* See grab_values */
262 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
263 {
264 int i;
265 struct commit *commit = (struct commit *) obj;
266
267 for (i = 0; i < used_atom_cnt; i++) {
268 const char *name = used_atom[i];
269 struct atom_value *v = &val[i];
270 if (!!deref != (*name == '*'))
271 continue;
272 if (deref)
273 name++;
274 if (!strcmp(name, "tree")) {
275 char *s = xmalloc(41);
276 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
277 v->s = s;
278 }
279 if (!strcmp(name, "numparent")) {
280 char *s = xmalloc(40);
281 v->ul = num_parents(commit);
282 sprintf(s, "%lu", v->ul);
283 v->s = s;
284 }
285 else if (!strcmp(name, "parent")) {
286 int num = num_parents(commit);
287 int i;
288 struct commit_list *parents;
289 char *s = xmalloc(41 * num + 1);
290 v->s = s;
291 for (i = 0, parents = commit->parents;
292 parents;
293 parents = parents->next, i = i + 41) {
294 struct commit *parent = parents->item;
295 strcpy(s+i, sha1_to_hex(parent->object.sha1));
296 if (parents->next)
297 s[i+40] = ' ';
298 }
299 if (!i)
300 *s = '\0';
301 }
302 }
303 }
304
305 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
306 {
307 const char *eol;
308 while (*buf) {
309 if (!strncmp(buf, who, wholen) &&
310 buf[wholen] == ' ')
311 return buf + wholen + 1;
312 eol = strchr(buf, '\n');
313 if (!eol)
314 return "";
315 eol++;
316 if (*eol == '\n')
317 return ""; /* end of header */
318 buf = eol;
319 }
320 return "";
321 }
322
323 static const char *copy_line(const char *buf)
324 {
325 const char *eol = strchrnul(buf, '\n');
326 return xmemdupz(buf, eol - buf);
327 }
328
329 static const char *copy_name(const char *buf)
330 {
331 const char *cp;
332 for (cp = buf; *cp && *cp != '\n'; cp++) {
333 if (!strncmp(cp, " <", 2))
334 return xmemdupz(buf, cp - buf);
335 }
336 return "";
337 }
338
339 static const char *copy_email(const char *buf)
340 {
341 const char *email = strchr(buf, '<');
342 const char *eoemail;
343 if (!email)
344 return "";
345 eoemail = strchr(email, '>');
346 if (!eoemail)
347 return "";
348 return xmemdupz(email, eoemail + 1 - email);
349 }
350
351 static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
352 {
353 const char *eoemail = strstr(buf, "> ");
354 char *zone;
355 unsigned long timestamp;
356 long tz;
357 enum date_mode date_mode = DATE_NORMAL;
358 const char *formatp;
359
360 /*
361 * We got here because atomname ends in "date" or "date<something>";
362 * it's not possible that <something> is not ":<format>" because
363 * parse_atom() wouldn't have allowed it, so we can assume that no
364 * ":" means no format is specified, and use the default.
365 */
366 formatp = strchr(atomname, ':');
367 if (formatp != NULL) {
368 formatp++;
369 date_mode = parse_date_format(formatp);
370 }
371
372 if (!eoemail)
373 goto bad;
374 timestamp = strtoul(eoemail + 2, &zone, 10);
375 if (timestamp == ULONG_MAX)
376 goto bad;
377 tz = strtol(zone, NULL, 10);
378 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
379 goto bad;
380 v->s = xstrdup(show_date(timestamp, tz, date_mode));
381 v->ul = timestamp;
382 return;
383 bad:
384 v->s = "";
385 v->ul = 0;
386 }
387
388 /* See grab_values */
389 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
390 {
391 int i;
392 int wholen = strlen(who);
393 const char *wholine = NULL;
394
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 (strncmp(who, name, wholen))
403 continue;
404 if (name[wholen] != 0 &&
405 strcmp(name + wholen, "name") &&
406 strcmp(name + wholen, "email") &&
407 prefixcmp(name + wholen, "date"))
408 continue;
409 if (!wholine)
410 wholine = find_wholine(who, wholen, buf, sz);
411 if (!wholine)
412 return; /* no point looking for it */
413 if (name[wholen] == 0)
414 v->s = copy_line(wholine);
415 else if (!strcmp(name + wholen, "name"))
416 v->s = copy_name(wholine);
417 else if (!strcmp(name + wholen, "email"))
418 v->s = copy_email(wholine);
419 else if (!prefixcmp(name + wholen, "date"))
420 grab_date(wholine, v, name);
421 }
422
423 /* For a tag or a commit object, if "creator" or "creatordate" is
424 * requested, do something special.
425 */
426 if (strcmp(who, "tagger") && strcmp(who, "committer"))
427 return; /* "author" for commit object is not wanted */
428 if (!wholine)
429 wholine = find_wholine(who, wholen, buf, sz);
430 if (!wholine)
431 return;
432 for (i = 0; i < used_atom_cnt; i++) {
433 const char *name = used_atom[i];
434 struct atom_value *v = &val[i];
435 if (!!deref != (*name == '*'))
436 continue;
437 if (deref)
438 name++;
439
440 if (!prefixcmp(name, "creatordate"))
441 grab_date(wholine, v, name);
442 else if (!strcmp(name, "creator"))
443 v->s = copy_line(wholine);
444 }
445 }
446
447 static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
448 {
449 while (*buf) {
450 const char *eol = strchr(buf, '\n');
451 if (!eol)
452 return;
453 if (eol[1] == '\n') {
454 buf = eol + 1;
455 break; /* found end of header */
456 }
457 buf = eol + 1;
458 }
459 while (*buf == '\n')
460 buf++;
461 if (!*buf)
462 return;
463 *sub = buf; /* first non-empty line */
464 buf = strchr(buf, '\n');
465 if (!buf) {
466 *body = "";
467 return; /* no body */
468 }
469 while (*buf == '\n')
470 buf++; /* skip blank between subject and body */
471 *body = buf;
472 }
473
474 /* See grab_values */
475 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
476 {
477 int i;
478 const char *subpos = NULL, *bodypos = NULL;
479
480 for (i = 0; i < used_atom_cnt; i++) {
481 const char *name = used_atom[i];
482 struct atom_value *v = &val[i];
483 if (!!deref != (*name == '*'))
484 continue;
485 if (deref)
486 name++;
487 if (strcmp(name, "subject") &&
488 strcmp(name, "body") &&
489 strcmp(name, "contents"))
490 continue;
491 if (!subpos)
492 find_subpos(buf, sz, &subpos, &bodypos);
493 if (!subpos)
494 return;
495
496 if (!strcmp(name, "subject"))
497 v->s = copy_line(subpos);
498 else if (!strcmp(name, "body"))
499 v->s = xstrdup(bodypos);
500 else if (!strcmp(name, "contents"))
501 v->s = xstrdup(subpos);
502 }
503 }
504
505 /* We want to have empty print-string for field requests
506 * that do not apply (e.g. "authordate" for a tag object)
507 */
508 static void fill_missing_values(struct atom_value *val)
509 {
510 int i;
511 for (i = 0; i < used_atom_cnt; i++) {
512 struct atom_value *v = &val[i];
513 if (v->s == NULL)
514 v->s = "";
515 }
516 }
517
518 /*
519 * val is a list of atom_value to hold returned values. Extract
520 * the values for atoms in used_atom array out of (obj, buf, sz).
521 * when deref is false, (obj, buf, sz) is the object that is
522 * pointed at by the ref itself; otherwise it is the object the
523 * ref (which is a tag) refers to.
524 */
525 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
526 {
527 grab_common_values(val, deref, obj, buf, sz);
528 switch (obj->type) {
529 case OBJ_TAG:
530 grab_tag_values(val, deref, obj, buf, sz);
531 grab_sub_body_contents(val, deref, obj, buf, sz);
532 grab_person("tagger", val, deref, obj, buf, sz);
533 break;
534 case OBJ_COMMIT:
535 grab_commit_values(val, deref, obj, buf, sz);
536 grab_sub_body_contents(val, deref, obj, buf, sz);
537 grab_person("author", val, deref, obj, buf, sz);
538 grab_person("committer", val, deref, obj, buf, sz);
539 break;
540 case OBJ_TREE:
541 // grab_tree_values(val, deref, obj, buf, sz);
542 break;
543 case OBJ_BLOB:
544 // grab_blob_values(val, deref, obj, buf, sz);
545 break;
546 default:
547 die("Eh? Object of type %d?", obj->type);
548 }
549 }
550
551 /*
552 * Parse the object referred by ref, and grab needed value.
553 */
554 static void populate_value(struct refinfo *ref)
555 {
556 void *buf;
557 struct object *obj;
558 int eaten, i;
559 unsigned long size;
560 const unsigned char *tagged;
561
562 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
563
564 /* 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 int deref = 0;
569 const char *refname;
570 const char *formatp;
571
572 if (*name == '*') {
573 deref = 1;
574 name++;
575 }
576
577 if (!prefixcmp(name, "refname"))
578 refname = ref->refname;
579 else if(!prefixcmp(name, "upstream")) {
580 struct branch *branch;
581 /* only local branches may have an upstream */
582 if (prefixcmp(ref->refname, "refs/heads/"))
583 continue;
584 branch = branch_get(ref->refname + 11);
585
586 if (!branch || !branch->merge || !branch->merge[0] ||
587 !branch->merge[0]->dst)
588 continue;
589 refname = branch->merge[0]->dst;
590 }
591 else
592 continue;
593
594 formatp = strchr(name, ':');
595 /* look for "short" refname format */
596 if (formatp) {
597 formatp++;
598 if (!strcmp(formatp, "short"))
599 refname = shorten_unambiguous_ref(refname,
600 warn_ambiguous_refs);
601 else
602 die("unknown %.*s format %s",
603 (int)(formatp - name), name, formatp);
604 }
605
606 if (!deref)
607 v->s = refname;
608 else {
609 int len = strlen(refname);
610 char *s = xmalloc(len + 4);
611 sprintf(s, "%s^{}", refname);
612 v->s = s;
613 }
614 }
615
616 for (i = 0; i < used_atom_cnt; i++) {
617 struct atom_value *v = &ref->value[i];
618 if (v->s == NULL)
619 goto need_obj;
620 }
621 return;
622
623 need_obj:
624 buf = get_obj(ref->objectname, &obj, &size, &eaten);
625 if (!buf)
626 die("missing object %s for %s",
627 sha1_to_hex(ref->objectname), ref->refname);
628 if (!obj)
629 die("parse_object_buffer failed on %s for %s",
630 sha1_to_hex(ref->objectname), ref->refname);
631
632 grab_values(ref->value, 0, obj, buf, size);
633 if (!eaten)
634 free(buf);
635
636 /* If there is no atom that wants to know about tagged
637 * object, we are done.
638 */
639 if (!need_tagged || (obj->type != OBJ_TAG))
640 return;
641
642 /* If it is a tag object, see if we use a value that derefs
643 * the object, and if we do grab the object it refers to.
644 */
645 tagged = ((struct tag *)obj)->tagged->sha1;
646
647 /* NEEDSWORK: This derefs tag only once, which
648 * is good to deal with chains of trust, but
649 * is not consistent with what deref_tag() does
650 * which peels the onion to the core.
651 */
652 buf = get_obj(tagged, &obj, &size, &eaten);
653 if (!buf)
654 die("missing object %s for %s",
655 sha1_to_hex(tagged), ref->refname);
656 if (!obj)
657 die("parse_object_buffer failed on %s for %s",
658 sha1_to_hex(tagged), ref->refname);
659 grab_values(ref->value, 1, obj, buf, size);
660 if (!eaten)
661 free(buf);
662 }
663
664 /*
665 * Given a ref, return the value for the atom. This lazily gets value
666 * out of the object by calling populate value.
667 */
668 static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
669 {
670 if (!ref->value) {
671 populate_value(ref);
672 fill_missing_values(ref->value);
673 }
674 *v = &ref->value[atom];
675 }
676
677 struct grab_ref_cbdata {
678 struct refinfo **grab_array;
679 const char **grab_pattern;
680 int grab_cnt;
681 };
682
683 /*
684 * A call-back given to for_each_ref(). It is unfortunate that we
685 * need to use global variables to pass extra information to this
686 * function.
687 */
688 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
689 {
690 struct grab_ref_cbdata *cb = cb_data;
691 struct refinfo *ref;
692 int cnt;
693
694 if (*cb->grab_pattern) {
695 const char **pattern;
696 int namelen = strlen(refname);
697 for (pattern = cb->grab_pattern; *pattern; pattern++) {
698 const char *p = *pattern;
699 int plen = strlen(p);
700
701 if ((plen <= namelen) &&
702 !strncmp(refname, p, plen) &&
703 (refname[plen] == '\0' ||
704 refname[plen] == '/' ||
705 p[plen-1] == '/'))
706 break;
707 if (!fnmatch(p, refname, FNM_PATHNAME))
708 break;
709 }
710 if (!*pattern)
711 return 0;
712 }
713
714 /* We do not open the object yet; sort may only need refname
715 * to do its job and the resulting list may yet to be pruned
716 * by maxcount logic.
717 */
718 ref = xcalloc(1, sizeof(*ref));
719 ref->refname = xstrdup(refname);
720 hashcpy(ref->objectname, sha1);
721
722 cnt = cb->grab_cnt;
723 cb->grab_array = xrealloc(cb->grab_array,
724 sizeof(*cb->grab_array) * (cnt + 1));
725 cb->grab_array[cnt++] = ref;
726 cb->grab_cnt = cnt;
727 return 0;
728 }
729
730 static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
731 {
732 struct atom_value *va, *vb;
733 int cmp;
734 cmp_type cmp_type = used_atom_type[s->atom];
735
736 get_value(a, s->atom, &va);
737 get_value(b, s->atom, &vb);
738 switch (cmp_type) {
739 case FIELD_STR:
740 cmp = strcmp(va->s, vb->s);
741 break;
742 default:
743 if (va->ul < vb->ul)
744 cmp = -1;
745 else if (va->ul == vb->ul)
746 cmp = 0;
747 else
748 cmp = 1;
749 break;
750 }
751 return (s->reverse) ? -cmp : cmp;
752 }
753
754 static struct ref_sort *ref_sort;
755 static int compare_refs(const void *a_, const void *b_)
756 {
757 struct refinfo *a = *((struct refinfo **)a_);
758 struct refinfo *b = *((struct refinfo **)b_);
759 struct ref_sort *s;
760
761 for (s = ref_sort; s; s = s->next) {
762 int cmp = cmp_ref_sort(s, a, b);
763 if (cmp)
764 return cmp;
765 }
766 return 0;
767 }
768
769 static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
770 {
771 ref_sort = sort;
772 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
773 }
774
775 static void print_value(struct refinfo *ref, int atom, int quote_style)
776 {
777 struct atom_value *v;
778 get_value(ref, atom, &v);
779 switch (quote_style) {
780 case QUOTE_NONE:
781 fputs(v->s, stdout);
782 break;
783 case QUOTE_SHELL:
784 sq_quote_print(stdout, v->s);
785 break;
786 case QUOTE_PERL:
787 perl_quote_print(stdout, v->s);
788 break;
789 case QUOTE_PYTHON:
790 python_quote_print(stdout, v->s);
791 break;
792 case QUOTE_TCL:
793 tcl_quote_print(stdout, v->s);
794 break;
795 }
796 }
797
798 static int hex1(char ch)
799 {
800 if ('0' <= ch && ch <= '9')
801 return ch - '0';
802 else if ('a' <= ch && ch <= 'f')
803 return ch - 'a' + 10;
804 else if ('A' <= ch && ch <= 'F')
805 return ch - 'A' + 10;
806 return -1;
807 }
808 static int hex2(const char *cp)
809 {
810 if (cp[0] && cp[1])
811 return (hex1(cp[0]) << 4) | hex1(cp[1]);
812 else
813 return -1;
814 }
815
816 static void emit(const char *cp, const char *ep)
817 {
818 while (*cp && (!ep || cp < ep)) {
819 if (*cp == '%') {
820 if (cp[1] == '%')
821 cp++;
822 else {
823 int ch = hex2(cp + 1);
824 if (0 <= ch) {
825 putchar(ch);
826 cp += 3;
827 continue;
828 }
829 }
830 }
831 putchar(*cp);
832 cp++;
833 }
834 }
835
836 static void show_ref(struct refinfo *info, const char *format, int quote_style)
837 {
838 const char *cp, *sp, *ep;
839
840 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
841 ep = strchr(sp, ')');
842 if (cp < sp)
843 emit(cp, sp);
844 print_value(info, parse_atom(sp + 2, ep), quote_style);
845 }
846 if (*cp) {
847 sp = cp + strlen(cp);
848 emit(cp, sp);
849 }
850 putchar('\n');
851 }
852
853 static struct ref_sort *default_sort(void)
854 {
855 static const char cstr_name[] = "refname";
856
857 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
858
859 sort->next = NULL;
860 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
861 return sort;
862 }
863
864 static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
865 {
866 struct ref_sort **sort_tail = opt->value;
867 struct ref_sort *s;
868 int len;
869
870 if (!arg) /* should --no-sort void the list ? */
871 return -1;
872
873 *sort_tail = s = xcalloc(1, sizeof(*s));
874
875 if (*arg == '-') {
876 s->reverse = 1;
877 arg++;
878 }
879 len = strlen(arg);
880 s->atom = parse_atom(arg, arg+len);
881 return 0;
882 }
883
884 static char const * const for_each_ref_usage[] = {
885 "git for-each-ref [options] [<pattern>]",
886 NULL
887 };
888
889 int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
890 {
891 int i, num_refs;
892 const char *format = "%(objectname) %(objecttype)\t%(refname)";
893 struct ref_sort *sort = NULL, **sort_tail = &sort;
894 int maxcount = 0, quote_style = 0;
895 struct refinfo **refs;
896 struct grab_ref_cbdata cbdata;
897
898 struct option opts[] = {
899 OPT_BIT('s', "shell", &quote_style,
900 "quote placeholders suitably for shells", QUOTE_SHELL),
901 OPT_BIT('p', "perl", &quote_style,
902 "quote placeholders suitably for perl", QUOTE_PERL),
903 OPT_BIT(0 , "python", &quote_style,
904 "quote placeholders suitably for python", QUOTE_PYTHON),
905 OPT_BIT(0 , "tcl", &quote_style,
906 "quote placeholders suitably for tcl", QUOTE_TCL),
907
908 OPT_GROUP(""),
909 OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
910 OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
911 OPT_CALLBACK(0 , "sort", sort_tail, "key",
912 "field name to sort on", &opt_parse_sort),
913 OPT_END(),
914 };
915
916 parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
917 if (maxcount < 0) {
918 error("invalid --count argument: `%d'", maxcount);
919 usage_with_options(for_each_ref_usage, opts);
920 }
921 if (HAS_MULTI_BITS(quote_style)) {
922 error("more than one quoting style?");
923 usage_with_options(for_each_ref_usage, opts);
924 }
925 if (verify_format(format))
926 usage_with_options(for_each_ref_usage, opts);
927
928 if (!sort)
929 sort = default_sort();
930 sort_atom_limit = used_atom_cnt;
931
932 /* for warn_ambiguous_refs */
933 git_config(git_default_config, NULL);
934
935 memset(&cbdata, 0, sizeof(cbdata));
936 cbdata.grab_pattern = argv;
937 for_each_rawref(grab_single_ref, &cbdata);
938 refs = cbdata.grab_array;
939 num_refs = cbdata.grab_cnt;
940
941 for (i = 0; i < used_atom_cnt; i++) {
942 if (used_atom[i][0] == '*') {
943 need_tagged = 1;
944 break;
945 }
946 }
947
948 sort_refs(sort, refs, num_refs);
949
950 if (!maxcount || num_refs < maxcount)
951 maxcount = num_refs;
952 for (i = 0; i < maxcount; i++)
953 show_ref(refs[i], format, quote_style);
954 return 0;
955 }
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