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 char *copy_subject(const char *buf, unsigned long len)
365{
366 char *r = xmemdupz(buf, len);
367 int i;
368 for (i = 0; i < len; i++)
370 if (r[i] == '\n')
371 r[i] = ' ';
372 return r;
374}
375static void grab_date(const char *buf, struct atom_value *v, const char *atomname)
377{
378 const char *eoemail = strstr(buf, "> ");
379 char *zone;
380 unsigned long timestamp;
381 long tz;
382 enum date_mode date_mode = DATE_NORMAL;
383 const char *formatp;
384 /*
386 * We got here because atomname ends in "date" or "date<something>";
387 * it's not possible that <something> is not ":<format>" because
388 * parse_atom() wouldn't have allowed it, so we can assume that no
389 * ":" means no format is specified, and use the default.
390 */
391 formatp = strchr(atomname, ':');
392 if (formatp != NULL) {
393 formatp++;
394 date_mode = parse_date_format(formatp);
395 }
396 if (!eoemail)
398 goto bad;
399 timestamp = strtoul(eoemail + 2, &zone, 10);
400 if (timestamp == ULONG_MAX)
401 goto bad;
402 tz = strtol(zone, NULL, 10);
403 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
404 goto bad;
405 v->s = xstrdup(show_date(timestamp, tz, date_mode));
406 v->ul = timestamp;
407 return;
408 bad:
409 v->s = "";
410 v->ul = 0;
411}
412/* See grab_values */
414static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
415{
416 int i;
417 int wholen = strlen(who);
418 const char *wholine = NULL;
419 for (i = 0; i < used_atom_cnt; i++) {
421 const char *name = used_atom[i];
422 struct atom_value *v = &val[i];
423 if (!!deref != (*name == '*'))
424 continue;
425 if (deref)
426 name++;
427 if (strncmp(who, name, wholen))
428 continue;
429 if (name[wholen] != 0 &&
430 strcmp(name + wholen, "name") &&
431 strcmp(name + wholen, "email") &&
432 prefixcmp(name + wholen, "date"))
433 continue;
434 if (!wholine)
435 wholine = find_wholine(who, wholen, buf, sz);
436 if (!wholine)
437 return; /* no point looking for it */
438 if (name[wholen] == 0)
439 v->s = copy_line(wholine);
440 else if (!strcmp(name + wholen, "name"))
441 v->s = copy_name(wholine);
442 else if (!strcmp(name + wholen, "email"))
443 v->s = copy_email(wholine);
444 else if (!prefixcmp(name + wholen, "date"))
445 grab_date(wholine, v, name);
446 }
447 /*
449 * For a tag or a commit object, if "creator" or "creatordate" is
450 * requested, do something special.
451 */
452 if (strcmp(who, "tagger") && strcmp(who, "committer"))
453 return; /* "author" for commit object is not wanted */
454 if (!wholine)
455 wholine = find_wholine(who, wholen, buf, sz);
456 if (!wholine)
457 return;
458 for (i = 0; i < used_atom_cnt; i++) {
459 const char *name = used_atom[i];
460 struct atom_value *v = &val[i];
461 if (!!deref != (*name == '*'))
462 continue;
463 if (deref)
464 name++;
465 if (!prefixcmp(name, "creatordate"))
467 grab_date(wholine, v, name);
468 else if (!strcmp(name, "creator"))
469 v->s = copy_line(wholine);
470 }
471}
472static void find_subpos(const char *buf, unsigned long sz,
474 const char **sub, unsigned long *sublen,
475 const char **body, unsigned long *bodylen)
476{
477 const char *eol;
478 /* skip past header until we hit empty line */
479 while (*buf && *buf != '\n') {
480 eol = strchrnul(buf, '\n');
481 if (*eol)
482 eol++;
483 buf = eol;
484 }
485 /* skip any empty lines */
486 while (*buf == '\n')
487 buf++;
488 /* subject is first non-empty line */
490 *sub = buf;
491 /* subject goes to first empty line */
492 while (*buf && *buf != '\n') {
493 eol = strchrnul(buf, '\n');
494 if (*eol)
495 eol++;
496 buf = eol;
497 }
498 *sublen = buf - *sub;
499 /* drop trailing newline, if present */
500 if (*sublen && (*sub)[*sublen - 1] == '\n')
501 *sublen -= 1;
502 /* skip any empty lines */
504 while (*buf == '\n')
505 buf++;
506 *body = buf;
507 *bodylen = strlen(buf);
508}
509/* See grab_values */
511static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
512{
513 int i;
514 const char *subpos = NULL, *bodypos;
515 unsigned long sublen, bodylen;
516 for (i = 0; i < used_atom_cnt; i++) {
518 const char *name = used_atom[i];
519 struct atom_value *v = &val[i];
520 if (!!deref != (*name == '*'))
521 continue;
522 if (deref)
523 name++;
524 if (strcmp(name, "subject") &&
525 strcmp(name, "body") &&
526 strcmp(name, "contents"))
527 continue;
528 if (!subpos)
529 find_subpos(buf, sz,
530 &subpos, &sublen,
531 &bodypos, &bodylen);
532 if (!strcmp(name, "subject"))
534 v->s = copy_subject(subpos, sublen);
535 else if (!strcmp(name, "body"))
536 v->s = xmemdupz(bodypos, bodylen);
537 else if (!strcmp(name, "contents"))
538 v->s = xstrdup(subpos);
539 }
540}
541/*
543 * We want to have empty print-string for field requests
544 * that do not apply (e.g. "authordate" for a tag object)
545 */
546static void fill_missing_values(struct atom_value *val)
547{
548 int i;
549 for (i = 0; i < used_atom_cnt; i++) {
550 struct atom_value *v = &val[i];
551 if (v->s == NULL)
552 v->s = "";
553 }
554}
555/*
557 * val is a list of atom_value to hold returned values. Extract
558 * the values for atoms in used_atom array out of (obj, buf, sz).
559 * when deref is false, (obj, buf, sz) is the object that is
560 * pointed at by the ref itself; otherwise it is the object the
561 * ref (which is a tag) refers to.
562 */
563static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
564{
565 grab_common_values(val, deref, obj, buf, sz);
566 switch (obj->type) {
567 case OBJ_TAG:
568 grab_tag_values(val, deref, obj, buf, sz);
569 grab_sub_body_contents(val, deref, obj, buf, sz);
570 grab_person("tagger", val, deref, obj, buf, sz);
571 break;
572 case OBJ_COMMIT:
573 grab_commit_values(val, deref, obj, buf, sz);
574 grab_sub_body_contents(val, deref, obj, buf, sz);
575 grab_person("author", val, deref, obj, buf, sz);
576 grab_person("committer", val, deref, obj, buf, sz);
577 break;
578 case OBJ_TREE:
579 /* grab_tree_values(val, deref, obj, buf, sz); */
580 break;
581 case OBJ_BLOB:
582 /* grab_blob_values(val, deref, obj, buf, sz); */
583 break;
584 default:
585 die("Eh? Object of type %d?", obj->type);
586 }
587}
588static inline char *copy_advance(char *dst, const char *src)
590{
591 while (*src)
592 *dst++ = *src++;
593 return dst;
594}
595/*
597 * Parse the object referred by ref, and grab needed value.
598 */
599static void populate_value(struct refinfo *ref)
600{
601 void *buf;
602 struct object *obj;
603 int eaten, i;
604 unsigned long size;
605 const unsigned char *tagged;
606 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
608 if (need_symref && (ref->flag & REF_ISSYMREF) && !ref->symref) {
610 unsigned char unused1[20];
611 const char *symref;
612 symref = resolve_ref(ref->refname, unused1, 1, NULL);
613 if (symref)
614 ref->symref = xstrdup(symref);
615 else
616 ref->symref = "";
617 }
618 /* Fill in specials first */
620 for (i = 0; i < used_atom_cnt; i++) {
621 const char *name = used_atom[i];
622 struct atom_value *v = &ref->value[i];
623 int deref = 0;
624 const char *refname;
625 const char *formatp;
626 if (*name == '*') {
628 deref = 1;
629 name++;
630 }
631 if (!prefixcmp(name, "refname"))
633 refname = ref->refname;
634 else if (!prefixcmp(name, "symref"))
635 refname = ref->symref ? ref->symref : "";
636 else if (!prefixcmp(name, "upstream")) {
637 struct branch *branch;
638 /* only local branches may have an upstream */
639 if (prefixcmp(ref->refname, "refs/heads/"))
640 continue;
641 branch = branch_get(ref->refname + 11);
642 if (!branch || !branch->merge || !branch->merge[0] ||
644 !branch->merge[0]->dst)
645 continue;
646 refname = branch->merge[0]->dst;
647 }
648 else if (!strcmp(name, "flag")) {
649 char buf[256], *cp = buf;
650 if (ref->flag & REF_ISSYMREF)
651 cp = copy_advance(cp, ",symref");
652 if (ref->flag & REF_ISPACKED)
653 cp = copy_advance(cp, ",packed");
654 if (cp == buf)
655 v->s = "";
656 else {
657 *cp = '\0';
658 v->s = xstrdup(buf + 1);
659 }
660 continue;
661 }
662 else
663 continue;
664 formatp = strchr(name, ':');
666 /* look for "short" refname format */
667 if (formatp) {
668 formatp++;
669 if (!strcmp(formatp, "short"))
670 refname = shorten_unambiguous_ref(refname,
671 warn_ambiguous_refs);
672 else
673 die("unknown %.*s format %s",
674 (int)(formatp - name), name, formatp);
675 }
676 if (!deref)
678 v->s = refname;
679 else {
680 int len = strlen(refname);
681 char *s = xmalloc(len + 4);
682 sprintf(s, "%s^{}", refname);
683 v->s = s;
684 }
685 }
686 for (i = 0; i < used_atom_cnt; i++) {
688 struct atom_value *v = &ref->value[i];
689 if (v->s == NULL)
690 goto need_obj;
691 }
692 return;
693 need_obj:
695 buf = get_obj(ref->objectname, &obj, &size, &eaten);
696 if (!buf)
697 die("missing object %s for %s",
698 sha1_to_hex(ref->objectname), ref->refname);
699 if (!obj)
700 die("parse_object_buffer failed on %s for %s",
701 sha1_to_hex(ref->objectname), ref->refname);
702 grab_values(ref->value, 0, obj, buf, size);
704 if (!eaten)
705 free(buf);
706 /*
708 * If there is no atom that wants to know about tagged
709 * object, we are done.
710 */
711 if (!need_tagged || (obj->type != OBJ_TAG))
712 return;
713 /*
715 * If it is a tag object, see if we use a value that derefs
716 * the object, and if we do grab the object it refers to.
717 */
718 tagged = ((struct tag *)obj)->tagged->sha1;
719 /*
721 * NEEDSWORK: This derefs tag only once, which
722 * is good to deal with chains of trust, but
723 * is not consistent with what deref_tag() does
724 * which peels the onion to the core.
725 */
726 buf = get_obj(tagged, &obj, &size, &eaten);
727 if (!buf)
728 die("missing object %s for %s",
729 sha1_to_hex(tagged), ref->refname);
730 if (!obj)
731 die("parse_object_buffer failed on %s for %s",
732 sha1_to_hex(tagged), ref->refname);
733 grab_values(ref->value, 1, obj, buf, size);
734 if (!eaten)
735 free(buf);
736}
737/*
739 * Given a ref, return the value for the atom. This lazily gets value
740 * out of the object by calling populate value.
741 */
742static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
743{
744 if (!ref->value) {
745 populate_value(ref);
746 fill_missing_values(ref->value);
747 }
748 *v = &ref->value[atom];
749}
750struct grab_ref_cbdata {
752 struct refinfo **grab_array;
753 const char **grab_pattern;
754 int grab_cnt;
755};
756/*
758 * A call-back given to for_each_ref(). Filter refs and keep them for
759 * later object processing.
760 */
761static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
762{
763 struct grab_ref_cbdata *cb = cb_data;
764 struct refinfo *ref;
765 int cnt;
766 if (*cb->grab_pattern) {
768 const char **pattern;
769 int namelen = strlen(refname);
770 for (pattern = cb->grab_pattern; *pattern; pattern++) {
771 const char *p = *pattern;
772 int plen = strlen(p);
773 if ((plen <= namelen) &&
775 !strncmp(refname, p, plen) &&
776 (refname[plen] == '\0' ||
777 refname[plen] == '/' ||
778 p[plen-1] == '/'))
779 break;
780 if (!fnmatch(p, refname, FNM_PATHNAME))
781 break;
782 }
783 if (!*pattern)
784 return 0;
785 }
786 /*
788 * We do not open the object yet; sort may only need refname
789 * to do its job and the resulting list may yet to be pruned
790 * by maxcount logic.
791 */
792 ref = xcalloc(1, sizeof(*ref));
793 ref->refname = xstrdup(refname);
794 hashcpy(ref->objectname, sha1);
795 ref->flag = flag;
796 cnt = cb->grab_cnt;
798 cb->grab_array = xrealloc(cb->grab_array,
799 sizeof(*cb->grab_array) * (cnt + 1));
800 cb->grab_array[cnt++] = ref;
801 cb->grab_cnt = cnt;
802 return 0;
803}
804static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
806{
807 struct atom_value *va, *vb;
808 int cmp;
809 cmp_type cmp_type = used_atom_type[s->atom];
810 get_value(a, s->atom, &va);
812 get_value(b, s->atom, &vb);
813 switch (cmp_type) {
814 case FIELD_STR:
815 cmp = strcmp(va->s, vb->s);
816 break;
817 default:
818 if (va->ul < vb->ul)
819 cmp = -1;
820 else if (va->ul == vb->ul)
821 cmp = 0;
822 else
823 cmp = 1;
824 break;
825 }
826 return (s->reverse) ? -cmp : cmp;
827}
828static struct ref_sort *ref_sort;
830static int compare_refs(const void *a_, const void *b_)
831{
832 struct refinfo *a = *((struct refinfo **)a_);
833 struct refinfo *b = *((struct refinfo **)b_);
834 struct ref_sort *s;
835 for (s = ref_sort; s; s = s->next) {
837 int cmp = cmp_ref_sort(s, a, b);
838 if (cmp)
839 return cmp;
840 }
841 return 0;
842}
843static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
845{
846 ref_sort = sort;
847 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
848}
849static void print_value(struct refinfo *ref, int atom, int quote_style)
851{
852 struct atom_value *v;
853 get_value(ref, atom, &v);
854 switch (quote_style) {
855 case QUOTE_NONE:
856 fputs(v->s, stdout);
857 break;
858 case QUOTE_SHELL:
859 sq_quote_print(stdout, v->s);
860 break;
861 case QUOTE_PERL:
862 perl_quote_print(stdout, v->s);
863 break;
864 case QUOTE_PYTHON:
865 python_quote_print(stdout, v->s);
866 break;
867 case QUOTE_TCL:
868 tcl_quote_print(stdout, v->s);
869 break;
870 }
871}
872static int hex1(char ch)
874{
875 if ('0' <= ch && ch <= '9')
876 return ch - '0';
877 else if ('a' <= ch && ch <= 'f')
878 return ch - 'a' + 10;
879 else if ('A' <= ch && ch <= 'F')
880 return ch - 'A' + 10;
881 return -1;
882}
883static int hex2(const char *cp)
884{
885 if (cp[0] && cp[1])
886 return (hex1(cp[0]) << 4) | hex1(cp[1]);
887 else
888 return -1;
889}
890static void emit(const char *cp, const char *ep)
892{
893 while (*cp && (!ep || cp < ep)) {
894 if (*cp == '%') {
895 if (cp[1] == '%')
896 cp++;
897 else {
898 int ch = hex2(cp + 1);
899 if (0 <= ch) {
900 putchar(ch);
901 cp += 3;
902 continue;
903 }
904 }
905 }
906 putchar(*cp);
907 cp++;
908 }
909}
910static void show_ref(struct refinfo *info, const char *format, int quote_style)
912{
913 const char *cp, *sp, *ep;
914 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
916 ep = strchr(sp, ')');
917 if (cp < sp)
918 emit(cp, sp);
919 print_value(info, parse_atom(sp + 2, ep), quote_style);
920 }
921 if (*cp) {
922 sp = cp + strlen(cp);
923 emit(cp, sp);
924 }
925 putchar('\n');
926}
927static struct ref_sort *default_sort(void)
929{
930 static const char cstr_name[] = "refname";
931 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
933 sort->next = NULL;
935 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
936 return sort;
937}
938static int opt_parse_sort(const struct option *opt, const char *arg, int unset)
940{
941 struct ref_sort **sort_tail = opt->value;
942 struct ref_sort *s;
943 int len;
944 if (!arg) /* should --no-sort void the list ? */
946 return -1;
947 *sort_tail = s = xcalloc(1, sizeof(*s));
949 if (*arg == '-') {
951 s->reverse = 1;
952 arg++;
953 }
954 len = strlen(arg);
955 s->atom = parse_atom(arg, arg+len);
956 return 0;
957}
958static char const * const for_each_ref_usage[] = {
960 "git for-each-ref [options] [<pattern>]",
961 NULL
962};
963int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
965{
966 int i, num_refs;
967 const char *format = "%(objectname) %(objecttype)\t%(refname)";
968 struct ref_sort *sort = NULL, **sort_tail = &sort;
969 int maxcount = 0, quote_style = 0;
970 struct refinfo **refs;
971 struct grab_ref_cbdata cbdata;
972 struct option opts[] = {
974 OPT_BIT('s', "shell", "e_style,
975 "quote placeholders suitably for shells", QUOTE_SHELL),
976 OPT_BIT('p', "perl", "e_style,
977 "quote placeholders suitably for perl", QUOTE_PERL),
978 OPT_BIT(0 , "python", "e_style,
979 "quote placeholders suitably for python", QUOTE_PYTHON),
980 OPT_BIT(0 , "tcl", "e_style,
981 "quote placeholders suitably for tcl", QUOTE_TCL),
982 OPT_GROUP(""),
984 OPT_INTEGER( 0 , "count", &maxcount, "show only <n> matched refs"),
985 OPT_STRING( 0 , "format", &format, "format", "format to use for the output"),
986 OPT_CALLBACK(0 , "sort", sort_tail, "key",
987 "field name to sort on", &opt_parse_sort),
988 OPT_END(),
989 };
990 parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
992 if (maxcount < 0) {
993 error("invalid --count argument: `%d'", maxcount);
994 usage_with_options(for_each_ref_usage, opts);
995 }
996 if (HAS_MULTI_BITS(quote_style)) {
997 error("more than one quoting style?");
998 usage_with_options(for_each_ref_usage, opts);
999 }
1000 if (verify_format(format))
1001 usage_with_options(for_each_ref_usage, opts);
1002 if (!sort)
1004 sort = default_sort();
1005 sort_atom_limit = used_atom_cnt;
1006 /* for warn_ambiguous_refs */
1008 git_config(git_default_config, NULL);
1009 memset(&cbdata, 0, sizeof(cbdata));
1011 cbdata.grab_pattern = argv;
1012 for_each_rawref(grab_single_ref, &cbdata);
1013 refs = cbdata.grab_array;
1014 num_refs = cbdata.grab_cnt;
1015 sort_refs(sort, refs, num_refs);
1017 if (!maxcount || num_refs < maxcount)
1019 maxcount = num_refs;
1020 for (i = 0; i < maxcount; i++)
1021 show_ref(refs[i], format, quote_style);
1022 return 0;
1023}