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/* 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
19typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
21struct atom_value {
23 const char *s;
24 unsigned long ul; /* used for sorting when not FIELD_STR */
25};
26struct ref_sort {
28 struct ref_sort *next;
29 int atom; /* index into used_atom array */
30 unsigned reverse : 1;
31};
32struct refinfo {
34 char *refname;
35 unsigned char objectname[20];
36 int flag;
37 const char *symref;
38 struct atom_value *value;
39};
40static struct {
42 const char *name;
43 cmp_type cmp_type;
44} valid_atom[] = {
45 { "refname" },
46 { "objecttype" },
47 { "objectsize", FIELD_ULONG },
48 { "objectname" },
49 { "tree" },
50 { "parent" },
51 { "numparent", FIELD_ULONG },
52 { "object" },
53 { "type" },
54 { "tag" },
55 { "author" },
56 { "authorname" },
57 { "authoremail" },
58 { "authordate", FIELD_TIME },
59 { "committer" },
60 { "committername" },
61 { "committeremail" },
62 { "committerdate", FIELD_TIME },
63 { "tagger" },
64 { "taggername" },
65 { "taggeremail" },
66 { "taggerdate", FIELD_TIME },
67 { "creator" },
68 { "creatordate", FIELD_TIME },
69 { "subject" },
70 { "body" },
71 { "contents" },
72 { "upstream" },
73 { "symref" },
74 { "flag" },
75};
76/*
78 * An atom is a valid field atom listed above, possibly prefixed with
79 * a "*" to denote deref_tag().
80 *
81 * We parse given format string and sort specifiers, and make a list
82 * of properties that we need to extract out of objects. refinfo
83 * structure will hold an array of values extracted that can be
84 * indexed with the "atom number", which is an index into this
85 * array.
86 */
87static const char **used_atom;
88static cmp_type *used_atom_type;
89static int used_atom_cnt, sort_atom_limit, need_tagged, need_symref;
90/*
92 * Used to parse format string and sort specifiers
93 */
94static int parse_atom(const char *atom, const char *ep)
95{
96 const char *sp;
97 int i, at;
98 sp = atom;
100 if (*sp == '*' && sp < ep)
101 sp++; /* deref */
102 if (ep <= sp)
103 die("malformed field name: %.*s", (int)(ep-atom), atom);
104 /* Do we have the atom already used elsewhere? */
106 for (i = 0; i < used_atom_cnt; i++) {
107 int len = strlen(used_atom[i]);
108 if (len == ep - atom && !memcmp(used_atom[i], atom, len))
109 return i;
110 }
111 /* Is the atom a valid one? */
113 for (i = 0; i < ARRAY_SIZE(valid_atom); i++) {
114 int len = strlen(valid_atom[i].name);
115 /*
116 * If the atom name has a colon, strip it and everything after
117 * it off - it specifies the format for this entry, and
118 * shouldn't be used for checking against the valid_atom
119 * table.
120 */
121 const char *formatp = strchr(sp, ':');
122 if (!formatp || ep < formatp)
123 formatp = ep;
124 if (len == formatp - sp && !memcmp(valid_atom[i].name, sp, len))
125 break;
126 }
127 if (ARRAY_SIZE(valid_atom) <= i)
129 die("unknown field name: %.*s", (int)(ep-atom), atom);
130 /* Add it in, including the deref prefix */
132 at = used_atom_cnt;
133 used_atom_cnt++;
134 used_atom = xrealloc(used_atom,
135 (sizeof *used_atom) * used_atom_cnt);
136 used_atom_type = xrealloc(used_atom_type,
137 (sizeof(*used_atom_type) * used_atom_cnt));
138 used_atom[at] = xmemdupz(atom, ep - atom);
139 used_atom_type[at] = valid_atom[i].cmp_type;
140 if (*atom == '*')
141 need_tagged = 1;
142 if (!strcmp(used_atom[at], "symref"))
143 need_symref = 1;
144 return at;
145}
146/*
148 * In a format string, find the next occurrence of %(atom).
149 */
150static const char *find_next(const char *cp)
151{
152 while (*cp) {
153 if (*cp == '%') {
154 /*
155 * %( is the start of an atom;
156 * %% is a quoted per-cent.
157 */
158 if (cp[1] == '(')
159 return cp;
160 else if (cp[1] == '%')
161 cp++; /* skip over two % */
162 /* otherwise this is a singleton, literal % */
163 }
164 cp++;
165 }
166 return NULL;
167}
168/*
170 * Make sure the format string is well formed, and parse out
171 * the used atoms.
172 */
173static int verify_format(const char *format)
174{
175 const char *cp, *sp;
176 for (cp = format; *cp && (sp = find_next(cp)); ) {
177 const char *ep = strchr(sp, ')');
178 if (!ep)
179 return error("malformed format string %s", sp);
180 /* sp points at "%(" and ep points at the closing ")" */
181 parse_atom(sp + 2, ep);
182 cp = ep + 1;
183 }
184 return 0;
185}
186/*
188 * Given an object name, read the object data and size, and return a
189 * "struct object". If the object data we are returning is also borrowed
190 * by the "struct object" representation, set *eaten as well---it is a
191 * signal from parse_object_buffer to us not to free the buffer.
192 */
193static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
194{
195 enum object_type type;
196 void *buf = read_sha1_file(sha1, &type, sz);
197 if (buf)
199 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
200 else
201 *obj = NULL;
202 return buf;
203}
204/* See grab_values */
206static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
207{
208 int i;
209 for (i = 0; i < used_atom_cnt; i++) {
211 const char *name = used_atom[i];
212 struct atom_value *v = &val[i];
213 if (!!deref != (*name == '*'))
214 continue;
215 if (deref)
216 name++;
217 if (!strcmp(name, "objecttype"))
218 v->s = typename(obj->type);
219 else if (!strcmp(name, "objectsize")) {
220 char *s = xmalloc(40);
221 sprintf(s, "%lu", sz);
222 v->ul = sz;
223 v->s = s;
224 }
225 else if (!strcmp(name, "objectname")) {
226 char *s = xmalloc(41);
227 strcpy(s, sha1_to_hex(obj->sha1));
228 v->s = s;
229 }
230 else if (!strcmp(name, "objectname:short")) {
231 v->s = xstrdup(find_unique_abbrev(obj->sha1,
232 DEFAULT_ABBREV));
233 }
234 }
235}
236/* See grab_values */
238static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
239{
240 int i;
241 struct tag *tag = (struct tag *) obj;
242 for (i = 0; i < used_atom_cnt; i++) {
244 const char *name = used_atom[i];
245 struct atom_value *v = &val[i];
246 if (!!deref != (*name == '*'))
247 continue;
248 if (deref)
249 name++;
250 if (!strcmp(name, "tag"))
251 v->s = tag->tag;
252 else if (!strcmp(name, "type") && tag->tagged)
253 v->s = typename(tag->tagged->type);
254 else if (!strcmp(name, "object") && tag->tagged) {
255 char *s = xmalloc(41);
256 strcpy(s, sha1_to_hex(tag->tagged->sha1));
257 v->s = s;
258 }
259 }
260}
261static int num_parents(struct commit *commit)
263{
264 struct commit_list *parents;
265 int i;
266 for (i = 0, parents = commit->parents;
268 parents;
269 parents = parents->next)
270 i++;
271 return i;
272}
273/* See grab_values */
275static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
276{
277 int i;
278 struct commit *commit = (struct commit *) obj;
279 for (i = 0; i < used_atom_cnt; i++) {
281 const char *name = used_atom[i];
282 struct atom_value *v = &val[i];
283 if (!!deref != (*name == '*'))
284 continue;
285 if (deref)
286 name++;
287 if (!strcmp(name, "tree")) {
288 char *s = xmalloc(41);
289 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
290 v->s = s;
291 }
292 if (!strcmp(name, "numparent")) {
293 char *s = xmalloc(40);
294 v->ul = num_parents(commit);
295 sprintf(s, "%lu", v->ul);
296 v->s = s;
297 }
298 else if (!strcmp(name, "parent")) {
299 int num = num_parents(commit);
300 int i;
301 struct commit_list *parents;
302 char *s = xmalloc(41 * num + 1);
303 v->s = s;
304 for (i = 0, parents = commit->parents;
305 parents;
306 parents = parents->next, i = i + 41) {
307 struct commit *parent = parents->item;
308 strcpy(s+i, sha1_to_hex(parent->object.sha1));
309 if (parents->next)
310 s[i+40] = ' ';
311 }
312 if (!i)
313 *s = '\0';
314 }
315 }
316}
317static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
319{
320 const char *eol;
321 while (*buf) {
322 if (!strncmp(buf, who, wholen) &&
323 buf[wholen] == ' ')
324 return buf + wholen + 1;
325 eol = strchr(buf, '\n');
326 if (!eol)
327 return "";
328 eol++;
329 if (*eol == '\n')
330 return ""; /* end of header */
331 buf = eol;
332 }
333 return "";
334}
335static const char *copy_line(const char *buf)
337{
338 const char *eol = strchrnul(buf, '\n');
339 return xmemdupz(buf, eol - buf);
340}
341static const char *copy_name(const char *buf)
343{
344 const char *cp;
345 for (cp = buf; *cp && *cp != '\n'; cp++) {
346 if (!strncmp(cp, " <", 2))
347 return xmemdupz(buf, cp - buf);
348 }
349 return "";
350}
351static const char *copy_email(const char *buf)
353{
354 const char *email = strchr(buf, '<');
355 const char *eoemail;
356 if (!email)
357 return "";
358 eoemail = strchr(email, '>');
359 if (!eoemail)
360 return "";
361 return xmemdupz(email, eoemail + 1 - email);
362}
363static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
365{
366 const char *eoemail = strstr(buf, "> ");
367 char *zone;
368 unsigned long timestamp;
369 long tz;
370 enum date_mode date_mode = DATE_NORMAL;
371 const char *formatp;
372 /*
374 * We got here because atomname ends in "date" or "date<something>";
375 * it's not possible that <something> is not ":<format>" because
376 * parse_atom() wouldn't have allowed it, so we can assume that no
377 * ":" means no format is specified, and use the default.
378 */
379 formatp = strchr(atomname, ':');
380 if (formatp != NULL) {
381 formatp++;
382 date_mode = parse_date_format(formatp);
383 }
384 if (!eoemail)
386 goto bad;
387 timestamp = strtoul(eoemail + 2, &zone, 10);
388 if (timestamp == ULONG_MAX)
389 goto bad;
390 tz = strtol(zone, NULL, 10);
391 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
392 goto bad;
393 v->s = xstrdup(show_date(timestamp, tz, date_mode));
394 v->ul = timestamp;
395 return;
396 bad:
397 v->s = "";
398 v->ul = 0;
399}
400/* See grab_values */
402static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
403{
404 int i;
405 int wholen = strlen(who);
406 const char *wholine = NULL;
407 for (i = 0; i < used_atom_cnt; i++) {
409 const char *name = used_atom[i];
410 struct atom_value *v = &val[i];
411 if (!!deref != (*name == '*'))
412 continue;
413 if (deref)
414 name++;
415 if (strncmp(who, name, wholen))
416 continue;
417 if (name[wholen] != 0 &&
418 strcmp(name + wholen, "name") &&
419 strcmp(name + wholen, "email") &&
420 prefixcmp(name + wholen, "date"))
421 continue;
422 if (!wholine)
423 wholine = find_wholine(who, wholen, buf, sz);
424 if (!wholine)
425 return; /* no point looking for it */
426 if (name[wholen] == 0)
427 v->s = copy_line(wholine);
428 else if (!strcmp(name + wholen, "name"))
429 v->s = copy_name(wholine);
430 else if (!strcmp(name + wholen, "email"))
431 v->s = copy_email(wholine);
432 else if (!prefixcmp(name + wholen, "date"))
433 grab_date(wholine, v, name);
434 }
435 /*
437 * For a tag or a commit object, if "creator" or "creatordate" is
438 * requested, do something special.
439 */
440 if (strcmp(who, "tagger") && strcmp(who, "committer"))
441 return; /* "author" for commit object is not wanted */
442 if (!wholine)
443 wholine = find_wholine(who, wholen, buf, sz);
444 if (!wholine)
445 return;
446 for (i = 0; i < used_atom_cnt; i++) {
447 const char *name = used_atom[i];
448 struct atom_value *v = &val[i];
449 if (!!deref != (*name == '*'))
450 continue;
451 if (deref)
452 name++;
453 if (!prefixcmp(name, "creatordate"))
455 grab_date(wholine, v, name);
456 else if (!strcmp(name, "creator"))
457 v->s = copy_line(wholine);
458 }
459}
460static void find_subpos(const char *buf, unsigned long sz,
462 const char **sub, unsigned long *sublen,
463 const char **body, unsigned long *bodylen)
464{
465 const char *eol;
466 /* skip past header until we hit empty line */
467 while (*buf && *buf != '\n') {
468 eol = strchrnul(buf, '\n');
469 if (*eol)
470 eol++;
471 buf = eol;
472 }
473 /* skip any empty lines */
474 while (*buf == '\n')
475 buf++;
476 /* subject is first non-empty line */
478 *sub = buf;
479 /* subject goes to end of line */
480 eol = strchrnul(buf, '\n');
481 *sublen = eol - buf;
482 buf = eol;
483 /* skip any empty lines */
485 while (*buf == '\n')
486 buf++;
487 *body = buf;
488 *bodylen = strlen(buf);
489}
490/* See grab_values */
492static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
493{
494 int i;
495 const char *subpos = NULL, *bodypos;
496 unsigned long sublen, bodylen;
497 for (i = 0; i < used_atom_cnt; i++) {
499 const char *name = used_atom[i];
500 struct atom_value *v = &val[i];
501 if (!!deref != (*name == '*'))
502 continue;
503 if (deref)
504 name++;
505 if (strcmp(name, "subject") &&
506 strcmp(name, "body") &&
507 strcmp(name, "contents"))
508 continue;
509 if (!subpos)
510 find_subpos(buf, sz,
511 &subpos, &sublen,
512 &bodypos, &bodylen);
513 if (!strcmp(name, "subject"))
515 v->s = xmemdupz(subpos, sublen);
516 else if (!strcmp(name, "body"))
517 v->s = xmemdupz(bodypos, bodylen);
518 else if (!strcmp(name, "contents"))
519 v->s = xstrdup(subpos);
520 }
521}
522/*
524 * We want to have empty print-string for field requests
525 * that do not apply (e.g. "authordate" for a tag object)
526 */
527static void fill_missing_values(struct atom_value *val)
528{
529 int i;
530 for (i = 0; i < used_atom_cnt; i++) {
531 struct atom_value *v = &val[i];
532 if (v->s == NULL)
533 v->s = "";
534 }
535}
536/*
538 * val is a list of atom_value to hold returned values. Extract
539 * the values for atoms in used_atom array out of (obj, buf, sz).
540 * when deref is false, (obj, buf, sz) is the object that is
541 * pointed at by the ref itself; otherwise it is the object the
542 * ref (which is a tag) refers to.
543 */
544static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
545{
546 grab_common_values(val, deref, obj, buf, sz);
547 switch (obj->type) {
548 case OBJ_TAG:
549 grab_tag_values(val, deref, obj, buf, sz);
550 grab_sub_body_contents(val, deref, obj, buf, sz);
551 grab_person("tagger", val, deref, obj, buf, sz);
552 break;
553 case OBJ_COMMIT:
554 grab_commit_values(val, deref, obj, buf, sz);
555 grab_sub_body_contents(val, deref, obj, buf, sz);
556 grab_person("author", val, deref, obj, buf, sz);
557 grab_person("committer", val, deref, obj, buf, sz);
558 break;
559 case OBJ_TREE:
560 /* grab_tree_values(val, deref, obj, buf, sz); */
561 break;
562 case OBJ_BLOB:
563 /* grab_blob_values(val, deref, obj, buf, sz); */
564 break;
565 default:
566 die("Eh? Object of type %d?", obj->type);
567 }
568}
569static inline char *copy_advance(char *dst, const char *src)
571{
572 while (*src)
573 *dst++ = *src++;
574 return dst;
575}
576/*
578 * Parse the object referred by ref, and grab needed value.
579 */
580static void populate_value(struct refinfo *ref)
581{
582 void *buf;
583 struct object *obj;
584 int eaten, i;
585 unsigned long size;
586 const unsigned char *tagged;
587 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
589 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
591 unsigned char unused1[20];
592 const char *symref;
593 symref = resolve_ref(ref->refname, unused1, 1, NULL);
594 if (symref)
595 ref->symref = xstrdup(symref);
596 else
597 ref->symref = "";
598 }
599 /* Fill in specials first */
601 for (i = 0; i < used_atom_cnt; i++) {
602 const char *name = used_atom[i];
603 struct atom_value *v = &ref->value[i];
604 int deref = 0;
605 const char *refname;
606 const char *formatp;
607 if (*name == '*') {
609 deref = 1;
610 name++;
611 }
612 if (!prefixcmp(name, "refname"))
614 refname = ref->refname;
615 else if (!prefixcmp(name, "symref"))
616 refname = ref->symref ? ref->symref : "";
617 else if (!prefixcmp(name, "upstream")) {
618 struct branch *branch;
619 /* only local branches may have an upstream */
620 if (prefixcmp(ref->refname, "refs/heads/"))
621 continue;
622 branch = branch_get(ref->refname + 11);
623 if (!branch || !branch->merge || !branch->merge[0] ||
625 !branch->merge[0]->dst)
626 continue;
627 refname = branch->merge[0]->dst;
628 }
629 else if (!strcmp(name, "flag")) {
630 char buf[256], *cp = buf;
631 if (ref->flag & REF_ISSYMREF)
632 cp = copy_advance(cp, ",symref");
633 if (ref->flag & REF_ISPACKED)
634 cp = copy_advance(cp, ",packed");
635 if (cp == buf)
636 v->s = "";
637 else {
638 *cp = '\0';
639 v->s = xstrdup(buf + 1);
640 }
641 continue;
642 }
643 else
644 continue;
645 formatp = strchr(name, ':');
647 /* look for "short" refname format */
648 if (formatp) {
649 formatp++;
650 if (!strcmp(formatp, "short"))
651 refname = shorten_unambiguous_ref(refname,
652 warn_ambiguous_refs);
653 else
654 die("unknown %.*s format %s",
655 (int)(formatp - name), name, formatp);
656 }
657 if (!deref)
659 v->s = refname;
660 else {
661 int len = strlen(refname);
662 char *s = xmalloc(len + 4);
663 sprintf(s, "%s^{}", refname);
664 v->s = s;
665 }
666 }
667 for (i = 0; i < used_atom_cnt; i++) {
669 struct atom_value *v = &ref->value[i];
670 if (v->s == NULL)
671 goto need_obj;
672 }
673 return;
674 need_obj:
676 buf = get_obj(ref->objectname, &obj, &size, &eaten);
677 if (!buf)
678 die("missing object %s for %s",
679 sha1_to_hex(ref->objectname), ref->refname);
680 if (!obj)
681 die("parse_object_buffer failed on %s for %s",
682 sha1_to_hex(ref->objectname), ref->refname);
683 grab_values(ref->value, 0, obj, buf, size);
685 if (!eaten)
686 free(buf);
687 /*
689 * If there is no atom that wants to know about tagged
690 * object, we are done.
691 */
692 if (!need_tagged || (obj->type != OBJ_TAG))
693 return;
694 /*
696 * If it is a tag object, see if we use a value that derefs
697 * the object, and if we do grab the object it refers to.
698 */
699 tagged = ((struct tag *)obj)->tagged->sha1;
700 /*
702 * NEEDSWORK: This derefs tag only once, which
703 * is good to deal with chains of trust, but
704 * is not consistent with what deref_tag() does
705 * which peels the onion to the core.
706 */
707 buf = get_obj(tagged, &obj, &size, &eaten);
708 if (!buf)
709 die("missing object %s for %s",
710 sha1_to_hex(tagged), ref->refname);
711 if (!obj)
712 die("parse_object_buffer failed on %s for %s",
713 sha1_to_hex(tagged), ref->refname);
714 grab_values(ref->value, 1, obj, buf, size);
715 if (!eaten)
716 free(buf);
717}
718/*
720 * Given a ref, return the value for the atom. This lazily gets value
721 * out of the object by calling populate value.
722 */
723static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
724{
725 if (!ref->value) {
726 populate_value(ref);
727 fill_missing_values(ref->value);
728 }
729 *v = &ref->value[atom];
730}
731struct grab_ref_cbdata {
733 struct refinfo **grab_array;
734 const char **grab_pattern;
735 int grab_cnt;
736};
737/*
739 * A call-back given to for_each_ref(). Filter refs and keep them for
740 * later object processing.
741 */
742static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
743{
744 struct grab_ref_cbdata *cb = cb_data;
745 struct refinfo *ref;
746 int cnt;
747 if (*cb->grab_pattern) {
749 const char **pattern;
750 int namelen = strlen(refname);
751 for (pattern = cb->grab_pattern; *pattern; pattern++) {
752 const char *p = *pattern;
753 int plen = strlen(p);
754 if ((plen <= namelen) &&
756 !strncmp(refname, p, plen) &&
757 (refname[plen] == '\0' ||
758 refname[plen] == '/' ||
759 p[plen-1] == '/'))
760 break;
761 if (!fnmatch(p, refname, FNM_PATHNAME))
762 break;
763 }
764 if (!*pattern)
765 return 0;
766 }
767 /*
769 * We do not open the object yet; sort may only need refname
770 * to do its job and the resulting list may yet to be pruned
771 * by maxcount logic.
772 */
773 ref = xcalloc(1, sizeof(*ref));
774 ref->refname = xstrdup(refname);
775 hashcpy(ref->objectname, sha1);
776 ref->flag = flag;
777 cnt = cb->grab_cnt;
779 cb->grab_array = xrealloc(cb->grab_array,
780 sizeof(*cb->grab_array) * (cnt + 1));
781 cb->grab_array[cnt++] = ref;
782 cb->grab_cnt = cnt;
783 return 0;
784}
785static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
787{
788 struct atom_value *va, *vb;
789 int cmp;
790 cmp_type cmp_type = used_atom_type[s->atom];
791 get_value(a, s->atom, &va);
793 get_value(b, s->atom, &vb);
794 switch (cmp_type) {
795 case FIELD_STR:
796 cmp = strcmp(va->s, vb->s);
797 break;
798 default:
799 if (va->ul < vb->ul)
800 cmp = -1;
801 else if (va->ul == vb->ul)
802 cmp = 0;
803 else
804 cmp = 1;
805 break;
806 }
807 return (s->reverse) ? -cmp : cmp;
808}
809static struct ref_sort *ref_sort;
811static int compare_refs(const void *a_, const void *b_)
812{
813 struct refinfo *a = *((struct refinfo **)a_);
814 struct refinfo *b = *((struct refinfo **)b_);
815 struct ref_sort *s;
816 for (s = ref_sort; s; s = s->next) {
818 int cmp = cmp_ref_sort(s, a, b);
819 if (cmp)
820 return cmp;
821 }
822 return 0;
823}
824static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
826{
827 ref_sort = sort;
828 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
829}
830static void print_value(struct refinfo *ref, int atom, int quote_style)
832{
833 struct atom_value *v;
834 get_value(ref, atom, &v);
835 switch (quote_style) {
836 case QUOTE_NONE:
837 fputs(v->s, stdout);
838 break;
839 case QUOTE_SHELL:
840 sq_quote_print(stdout, v->s);
841 break;
842 case QUOTE_PERL:
843 perl_quote_print(stdout, v->s);
844 break;
845 case QUOTE_PYTHON:
846 python_quote_print(stdout, v->s);
847 break;
848 case QUOTE_TCL:
849 tcl_quote_print(stdout, v->s);
850 break;
851 }
852}
853static int hex1(char ch)
855{
856 if ('0' <= ch && ch <= '9')
857 return ch - '0';
858 else if ('a' <= ch && ch <= 'f')
859 return ch - 'a' + 10;
860 else if ('A' <= ch && ch <= 'F')
861 return ch - 'A' + 10;
862 return -1;
863}
864static int hex2(const char *cp)
865{
866 if (cp[0] && cp[1])
867 return (hex1(cp[0]) << 4) | hex1(cp[1]);
868 else
869 return -1;
870}
871static void emit(const char *cp, const char *ep)
873{
874 while (*cp && (!ep || cp < ep)) {
875 if (*cp == '%') {
876 if (cp[1] == '%')
877 cp++;
878 else {
879 int ch = hex2(cp + 1);
880 if (0 <= ch) {
881 putchar(ch);
882 cp += 3;
883 continue;
884 }
885 }
886 }
887 putchar(*cp);
888 cp++;
889 }
890}
891static void show_ref(struct refinfo *info, const char *format, int quote_style)
893{
894 const char *cp, *sp, *ep;
895 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
897 ep = strchr(sp, ')');
898 if (cp < sp)
899 emit(cp, sp);
900 print_value(info, parse_atom(sp + 2, ep), quote_style);
901 }
902 if (*cp) {
903 sp = cp + strlen(cp);
904 emit(cp, sp);
905 }
906 putchar('\n');
907}
908static struct ref_sort *default_sort(void)
910{
911 static const char cstr_name[] = "refname";
912 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
914 sort->next = NULL;
916 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
917 return sort;
918}
919static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
921{
922 struct ref_sort **sort_tail = opt->value;
923 struct ref_sort *s;
924 int len;
925 if (!arg) /* should --no-sort void the list ? */
927 return -1;
928 *sort_tail = s = xcalloc(1, sizeof(*s));
930 if (*arg == '-') {
932 s->reverse = 1;
933 arg++;
934 }
935 len = strlen(arg);
936 s->atom = parse_atom(arg, arg+len);
937 return 0;
938}
939static char const * const for_each_ref_usage[] = {
941 "git for-each-ref [options] [<pattern>]",
942 NULL
943};
944int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
946{
947 int i, num_refs;
948 const char *format = "%(objectname) %(objecttype)\t%(refname)";
949 struct ref_sort *sort = NULL, **sort_tail = &sort;
950 int maxcount = 0, quote_style = 0;
951 struct refinfo **refs;
952 struct grab_ref_cbdata cbdata;
953 struct option opts[] = {
955 OPT_BIT('s', "shell", "e_style,
956 "quote placeholders suitably for shells", QUOTE_SHELL),
957 OPT_BIT('p', "perl", "e_style,
958 "quote placeholders suitably for perl", QUOTE_PERL),
959 OPT_BIT(0 , "python", "e_style,
960 "quote placeholders suitably for python", QUOTE_PYTHON),
961 OPT_BIT(0 , "tcl", "e_style,
962 "quote placeholders suitably for tcl", QUOTE_TCL),
963 OPT_GROUP(""),
965 OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
966 OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
967 OPT_CALLBACK(0 , "sort", sort_tail, "key",
968 "field name to sort on", &opt_parse_sort),
969 OPT_END(),
970 };
971 parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
973 if (maxcount < 0) {
974 error("invalid --count argument: `%d'", maxcount);
975 usage_with_options(for_each_ref_usage, opts);
976 }
977 if (HAS_MULTI_BITS(quote_style)) {
978 error("more than one quoting style?");
979 usage_with_options(for_each_ref_usage, opts);
980 }
981 if (verify_format(format))
982 usage_with_options(for_each_ref_usage, opts);
983 if (!sort)
985 sort = default_sort();
986 sort_atom_limit = used_atom_cnt;
987 /* for warn_ambiguous_refs */
989 git_config(git_default_config, NULL);
990 memset(&cbdata, 0, sizeof(cbdata));
992 cbdata.grab_pattern = argv;
993 for_each_rawref(grab_single_ref, &cbdata);
994 refs = cbdata.grab_array;
995 num_refs = cbdata.grab_cnt;
996 sort_refs(sort, refs, num_refs);
998 if (!maxcount || num_refs < maxcount)
1000 maxcount = num_refs;
1001 for (i = 0; i < maxcount; i++)
1002 show_ref(refs[i], format, quote_style);
1003 return 0;
1004}