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[git/haiku.git] / builtin-for-each-ref.c
blob0afa1c5c41e79a05ddebb7d874956163510daf0b
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
11 /* 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
17
18 typedef enum { FIELD_STR, FIELD_ULONG, FIELD_TIME } cmp_type;
19
20 struct atom_value {
21 const char *s;
22 unsigned long ul; /* used for sorting when not FIELD_STR */
23 };
24
25 struct ref_sort {
26 struct ref_sort *next;
27 int atom; /* index into used_atom array */
28 unsigned reverse : 1;
29 };
30
31 struct refinfo {
32 char *refname;
33 unsigned char objectname[20];
34 struct atom_value *value;
35 };
36
37 static 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
70 /*
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 */
80 static const char **used_atom;
81 static cmp_type *used_atom_type;
82 static int used_atom_cnt, sort_atom_limit, need_tagged;
83
84 /*
85 * Used to parse format string and sort specifiers
86 */
87 static int parse_atom(const char *atom, const char *ep)
88 {
89 const char *sp;
90 char *n;
91 int i, at;
92
93 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
99 /* 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
106 /* 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 if (len == ep - sp && !memcmp(valid_atom[i].name, sp, len))
110 break;
111 }
112
113 if (ARRAY_SIZE(valid_atom) <= i)
114 die("unknown field name: %.*s", (int)(ep-atom), atom);
115
116 /* Add it in, including the deref prefix */
117 at = used_atom_cnt;
118 used_atom_cnt++;
119 used_atom = xrealloc(used_atom,
120 (sizeof *used_atom) * used_atom_cnt);
121 used_atom_type = xrealloc(used_atom_type,
122 (sizeof(*used_atom_type) * used_atom_cnt));
123 n = xmalloc(ep - atom + 1);
124 memcpy(n, atom, ep - atom);
125 n[ep-atom] = 0;
126 used_atom[at] = n;
127 used_atom_type[at] = valid_atom[i].cmp_type;
128 return at;
129 }
130
131 /*
132 * In a format string, find the next occurrence of %(atom).
133 */
134 static const char *find_next(const char *cp)
135 {
136 while (*cp) {
137 if (*cp == '%') {
138 /* %( is the start of an atom;
139 * %% is a quoted per-cent.
140 */
141 if (cp[1] == '(')
142 return cp;
143 else if (cp[1] == '%')
144 cp++; /* skip over two % */
145 /* otherwise this is a singleton, literal % */
146 }
147 cp++;
148 }
149 return NULL;
150 }
151
152 /*
153 * Make sure the format string is well formed, and parse out
154 * the used atoms.
155 */
156 static void verify_format(const char *format)
157 {
158 const char *cp, *sp;
159 for (cp = format; *cp && (sp = find_next(cp)); ) {
160 const char *ep = strchr(sp, ')');
161 if (!ep)
162 die("malformatted format string %s", sp);
163 /* sp points at "%(" and ep points at the closing ")" */
164 parse_atom(sp + 2, ep);
165 cp = ep + 1;
166 }
167 }
168
169 /*
170 * Given an object name, read the object data and size, and return a
171 * "struct object". If the object data we are returning is also borrowed
172 * by the "struct object" representation, set *eaten as well---it is a
173 * signal from parse_object_buffer to us not to free the buffer.
174 */
175 static void *get_obj(const unsigned char *sha1, struct object **obj, unsigned long *sz, int *eaten)
176 {
177 enum object_type type;
178 void *buf = read_sha1_file(sha1, &type, sz);
179
180 if (buf)
181 *obj = parse_object_buffer(sha1, type, *sz, buf, eaten);
182 else
183 *obj = NULL;
184 return buf;
185 }
186
187 /* See grab_values */
188 static void grab_common_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
189 {
190 int i;
191
192 for (i = 0; i < used_atom_cnt; i++) {
193 const char *name = used_atom[i];
194 struct atom_value *v = &val[i];
195 if (!!deref != (*name == '*'))
196 continue;
197 if (deref)
198 name++;
199 if (!strcmp(name, "objecttype"))
200 v->s = typename(obj->type);
201 else if (!strcmp(name, "objectsize")) {
202 char *s = xmalloc(40);
203 sprintf(s, "%lu", sz);
204 v->ul = sz;
205 v->s = s;
206 }
207 else if (!strcmp(name, "objectname")) {
208 char *s = xmalloc(41);
209 strcpy(s, sha1_to_hex(obj->sha1));
210 v->s = s;
211 }
212 }
213 }
214
215 /* See grab_values */
216 static void grab_tag_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
217 {
218 int i;
219 struct tag *tag = (struct tag *) obj;
220
221 for (i = 0; i < used_atom_cnt; i++) {
222 const char *name = used_atom[i];
223 struct atom_value *v = &val[i];
224 if (!!deref != (*name == '*'))
225 continue;
226 if (deref)
227 name++;
228 if (!strcmp(name, "tag"))
229 v->s = tag->tag;
230 }
231 }
232
233 static int num_parents(struct commit *commit)
234 {
235 struct commit_list *parents;
236 int i;
237
238 for (i = 0, parents = commit->parents;
239 parents;
240 parents = parents->next)
241 i++;
242 return i;
243 }
244
245 /* See grab_values */
246 static void grab_commit_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
247 {
248 int i;
249 struct commit *commit = (struct commit *) obj;
250
251 for (i = 0; i < used_atom_cnt; i++) {
252 const char *name = used_atom[i];
253 struct atom_value *v = &val[i];
254 if (!!deref != (*name == '*'))
255 continue;
256 if (deref)
257 name++;
258 if (!strcmp(name, "tree")) {
259 char *s = xmalloc(41);
260 strcpy(s, sha1_to_hex(commit->tree->object.sha1));
261 v->s = s;
262 }
263 if (!strcmp(name, "numparent")) {
264 char *s = xmalloc(40);
265 sprintf(s, "%lu", v->ul);
266 v->s = s;
267 v->ul = num_parents(commit);
268 }
269 else if (!strcmp(name, "parent")) {
270 int num = num_parents(commit);
271 int i;
272 struct commit_list *parents;
273 char *s = xmalloc(42 * num);
274 v->s = s;
275 for (i = 0, parents = commit->parents;
276 parents;
277 parents = parents->next, i = i + 42) {
278 struct commit *parent = parents->item;
279 strcpy(s+i, sha1_to_hex(parent->object.sha1));
280 if (parents->next)
281 s[i+40] = ' ';
282 }
283 }
284 }
285 }
286
287 static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz)
288 {
289 const char *eol;
290 while (*buf) {
291 if (!strncmp(buf, who, wholen) &&
292 buf[wholen] == ' ')
293 return buf + wholen + 1;
294 eol = strchr(buf, '\n');
295 if (!eol)
296 return "";
297 eol++;
298 if (eol[1] == '\n')
299 return ""; /* end of header */
300 buf = eol;
301 }
302 return "";
303 }
304
305 static const char *copy_line(const char *buf)
306 {
307 const char *eol = strchr(buf, '\n');
308 char *line;
309 int len;
310 if (!eol)
311 return "";
312 len = eol - buf;
313 line = xmalloc(len + 1);
314 memcpy(line, buf, len);
315 line[len] = 0;
316 return line;
317 }
318
319 static const char *copy_name(const char *buf)
320 {
321 const char *eol = strchr(buf, '\n');
322 const char *eoname = strstr(buf, " <");
323 char *line;
324 int len;
325 if (!(eoname && eol && eoname < eol))
326 return "";
327 len = eoname - buf;
328 line = xmalloc(len + 1);
329 memcpy(line, buf, len);
330 line[len] = 0;
331 return line;
332 }
333
334 static const char *copy_email(const char *buf)
335 {
336 const char *email = strchr(buf, '<');
337 const char *eoemail = strchr(email, '>');
338 char *line;
339 int len;
340 if (!email || !eoemail)
341 return "";
342 eoemail++;
343 len = eoemail - email;
344 line = xmalloc(len + 1);
345 memcpy(line, email, len);
346 line[len] = 0;
347 return line;
348 }
349
350 static void grab_date(const char *buf, struct atom_value *v)
351 {
352 const char *eoemail = strstr(buf, "> ");
353 char *zone;
354 unsigned long timestamp;
355 long tz;
356
357 if (!eoemail)
358 goto bad;
359 timestamp = strtoul(eoemail + 2, &zone, 10);
360 if (timestamp == ULONG_MAX)
361 goto bad;
362 tz = strtol(zone, NULL, 10);
363 if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE)
364 goto bad;
365 v->s = xstrdup(show_date(timestamp, tz, 0));
366 v->ul = timestamp;
367 return;
368 bad:
369 v->s = "";
370 v->ul = 0;
371 }
372
373 /* See grab_values */
374 static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
375 {
376 int i;
377 int wholen = strlen(who);
378 const char *wholine = NULL;
379
380 for (i = 0; i < used_atom_cnt; i++) {
381 const char *name = used_atom[i];
382 struct atom_value *v = &val[i];
383 if (!!deref != (*name == '*'))
384 continue;
385 if (deref)
386 name++;
387 if (strncmp(who, name, wholen))
388 continue;
389 if (name[wholen] != 0 &&
390 strcmp(name + wholen, "name") &&
391 strcmp(name + wholen, "email") &&
392 strcmp(name + wholen, "date"))
393 continue;
394 if (!wholine)
395 wholine = find_wholine(who, wholen, buf, sz);
396 if (!wholine)
397 return; /* no point looking for it */
398 if (name[wholen] == 0)
399 v->s = copy_line(wholine);
400 else if (!strcmp(name + wholen, "name"))
401 v->s = copy_name(wholine);
402 else if (!strcmp(name + wholen, "email"))
403 v->s = copy_email(wholine);
404 else if (!strcmp(name + wholen, "date"))
405 grab_date(wholine, v);
406 }
407
408 /* For a tag or a commit object, if "creator" or "creatordate" is
409 * requested, do something special.
410 */
411 if (strcmp(who, "tagger") && strcmp(who, "committer"))
412 return; /* "author" for commit object is not wanted */
413 if (!wholine)
414 wholine = find_wholine(who, wholen, buf, sz);
415 if (!wholine)
416 return;
417 for (i = 0; i < used_atom_cnt; i++) {
418 const char *name = used_atom[i];
419 struct atom_value *v = &val[i];
420 if (!!deref != (*name == '*'))
421 continue;
422 if (deref)
423 name++;
424
425 if (!strcmp(name, "creatordate"))
426 grab_date(wholine, v);
427 else if (!strcmp(name, "creator"))
428 v->s = copy_line(wholine);
429 }
430 }
431
432 static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body)
433 {
434 while (*buf) {
435 const char *eol = strchr(buf, '\n');
436 if (!eol)
437 return;
438 if (eol[1] == '\n') {
439 buf = eol + 1;
440 break; /* found end of header */
441 }
442 buf = eol + 1;
443 }
444 while (*buf == '\n')
445 buf++;
446 if (!*buf)
447 return;
448 *sub = buf; /* first non-empty line */
449 buf = strchr(buf, '\n');
450 if (!buf)
451 return; /* no body */
452 while (*buf == '\n')
453 buf++; /* skip blank between subject and body */
454 *body = buf;
455 }
456
457 /* See grab_values */
458 static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
459 {
460 int i;
461 const char *subpos = NULL, *bodypos = NULL;
462
463 for (i = 0; i < used_atom_cnt; i++) {
464 const char *name = used_atom[i];
465 struct atom_value *v = &val[i];
466 if (!!deref != (*name == '*'))
467 continue;
468 if (deref)
469 name++;
470 if (strcmp(name, "subject") &&
471 strcmp(name, "body") &&
472 strcmp(name, "contents"))
473 continue;
474 if (!subpos)
475 find_subpos(buf, sz, &subpos, &bodypos);
476 if (!subpos)
477 return;
478
479 if (!strcmp(name, "subject"))
480 v->s = copy_line(subpos);
481 else if (!strcmp(name, "body"))
482 v->s = xstrdup(bodypos);
483 else if (!strcmp(name, "contents"))
484 v->s = xstrdup(subpos);
485 }
486 }
487
488 /* We want to have empty print-string for field requests
489 * that do not apply (e.g. "authordate" for a tag object)
490 */
491 static void fill_missing_values(struct atom_value *val)
492 {
493 int i;
494 for (i = 0; i < used_atom_cnt; i++) {
495 struct atom_value *v = &val[i];
496 if (v->s == NULL)
497 v->s = "";
498 }
499 }
500
501 /*
502 * val is a list of atom_value to hold returned values. Extract
503 * the values for atoms in used_atom array out of (obj, buf, sz).
504 * when deref is false, (obj, buf, sz) is the object that is
505 * pointed at by the ref itself; otherwise it is the object the
506 * ref (which is a tag) refers to.
507 */
508 static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz)
509 {
510 grab_common_values(val, deref, obj, buf, sz);
511 switch (obj->type) {
512 case OBJ_TAG:
513 grab_tag_values(val, deref, obj, buf, sz);
514 grab_sub_body_contents(val, deref, obj, buf, sz);
515 grab_person("tagger", val, deref, obj, buf, sz);
516 break;
517 case OBJ_COMMIT:
518 grab_commit_values(val, deref, obj, buf, sz);
519 grab_sub_body_contents(val, deref, obj, buf, sz);
520 grab_person("author", val, deref, obj, buf, sz);
521 grab_person("committer", val, deref, obj, buf, sz);
522 break;
523 case OBJ_TREE:
524 // grab_tree_values(val, deref, obj, buf, sz);
525 break;
526 case OBJ_BLOB:
527 // grab_blob_values(val, deref, obj, buf, sz);
528 break;
529 default:
530 die("Eh? Object of type %d?", obj->type);
531 }
532 }
533
534 /*
535 * Parse the object referred by ref, and grab needed value.
536 */
537 static void populate_value(struct refinfo *ref)
538 {
539 void *buf;
540 struct object *obj;
541 int eaten, i;
542 unsigned long size;
543 const unsigned char *tagged;
544
545 ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt);
546
547 buf = get_obj(ref->objectname, &obj, &size, &eaten);
548 if (!buf)
549 die("missing object %s for %s",
550 sha1_to_hex(ref->objectname), ref->refname);
551 if (!obj)
552 die("parse_object_buffer failed on %s for %s",
553 sha1_to_hex(ref->objectname), ref->refname);
554
555 /* Fill in specials first */
556 for (i = 0; i < used_atom_cnt; i++) {
557 const char *name = used_atom[i];
558 struct atom_value *v = &ref->value[i];
559 if (!strcmp(name, "refname"))
560 v->s = ref->refname;
561 else if (!strcmp(name, "*refname")) {
562 int len = strlen(ref->refname);
563 char *s = xmalloc(len + 4);
564 sprintf(s, "%s^{}", ref->refname);
565 v->s = s;
566 }
567 }
568
569 grab_values(ref->value, 0, obj, buf, size);
570 if (!eaten)
571 free(buf);
572
573 /* If there is no atom that wants to know about tagged
574 * object, we are done.
575 */
576 if (!need_tagged || (obj->type != OBJ_TAG))
577 return;
578
579 /* If it is a tag object, see if we use a value that derefs
580 * the object, and if we do grab the object it refers to.
581 */
582 tagged = ((struct tag *)obj)->tagged->sha1;
583
584 /* NEEDSWORK: This derefs tag only once, which
585 * is good to deal with chains of trust, but
586 * is not consistent with what deref_tag() does
587 * which peels the onion to the core.
588 */
589 buf = get_obj(tagged, &obj, &size, &eaten);
590 if (!buf)
591 die("missing object %s for %s",
592 sha1_to_hex(tagged), ref->refname);
593 if (!obj)
594 die("parse_object_buffer failed on %s for %s",
595 sha1_to_hex(tagged), ref->refname);
596 grab_values(ref->value, 1, obj, buf, size);
597 if (!eaten)
598 free(buf);
599 }
600
601 /*
602 * Given a ref, return the value for the atom. This lazily gets value
603 * out of the object by calling populate value.
604 */
605 static void get_value(struct refinfo *ref, int atom, struct atom_value **v)
606 {
607 if (!ref->value) {
608 populate_value(ref);
609 fill_missing_values(ref->value);
610 }
611 *v = &ref->value[atom];
612 }
613
614 struct grab_ref_cbdata {
615 struct refinfo **grab_array;
616 const char **grab_pattern;
617 int grab_cnt;
618 };
619
620 /*
621 * A call-back given to for_each_ref(). It is unfortunate that we
622 * need to use global variables to pass extra information to this
623 * function.
624 */
625 static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
626 {
627 struct grab_ref_cbdata *cb = cb_data;
628 struct refinfo *ref;
629 int cnt;
630
631 if (*cb->grab_pattern) {
632 const char **pattern;
633 int namelen = strlen(refname);
634 for (pattern = cb->grab_pattern; *pattern; pattern++) {
635 const char *p = *pattern;
636 int plen = strlen(p);
637
638 if ((plen <= namelen) &&
639 !strncmp(refname, p, plen) &&
640 (refname[plen] == '\0' ||
641 refname[plen] == '/'))
642 break;
643 if (!fnmatch(p, refname, FNM_PATHNAME))
644 break;
645 }
646 if (!*pattern)
647 return 0;
648 }
649
650 /* We do not open the object yet; sort may only need refname
651 * to do its job and the resulting list may yet to be pruned
652 * by maxcount logic.
653 */
654 ref = xcalloc(1, sizeof(*ref));
655 ref->refname = xstrdup(refname);
656 hashcpy(ref->objectname, sha1);
657
658 cnt = cb->grab_cnt;
659 cb->grab_array = xrealloc(cb->grab_array,
660 sizeof(*cb->grab_array) * (cnt + 1));
661 cb->grab_array[cnt++] = ref;
662 cb->grab_cnt = cnt;
663 return 0;
664 }
665
666 static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b)
667 {
668 struct atom_value *va, *vb;
669 int cmp;
670 cmp_type cmp_type = used_atom_type[s->atom];
671
672 get_value(a, s->atom, &va);
673 get_value(b, s->atom, &vb);
674 switch (cmp_type) {
675 case FIELD_STR:
676 cmp = strcmp(va->s, vb->s);
677 break;
678 default:
679 if (va->ul < vb->ul)
680 cmp = -1;
681 else if (va->ul == vb->ul)
682 cmp = 0;
683 else
684 cmp = 1;
685 break;
686 }
687 return (s->reverse) ? -cmp : cmp;
688 }
689
690 static struct ref_sort *ref_sort;
691 static int compare_refs(const void *a_, const void *b_)
692 {
693 struct refinfo *a = *((struct refinfo **)a_);
694 struct refinfo *b = *((struct refinfo **)b_);
695 struct ref_sort *s;
696
697 for (s = ref_sort; s; s = s->next) {
698 int cmp = cmp_ref_sort(s, a, b);
699 if (cmp)
700 return cmp;
701 }
702 return 0;
703 }
704
705 static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs)
706 {
707 ref_sort = sort;
708 qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs);
709 }
710
711 static void print_value(struct refinfo *ref, int atom, int quote_style)
712 {
713 struct atom_value *v;
714 get_value(ref, atom, &v);
715 switch (quote_style) {
716 case QUOTE_NONE:
717 fputs(v->s, stdout);
718 break;
719 case QUOTE_SHELL:
720 sq_quote_print(stdout, v->s);
721 break;
722 case QUOTE_PERL:
723 perl_quote_print(stdout, v->s);
724 break;
725 case QUOTE_PYTHON:
726 python_quote_print(stdout, v->s);
727 break;
728 case QUOTE_TCL:
729 tcl_quote_print(stdout, v->s);
730 break;
731 }
732 }
733
734 static int hex1(char ch)
735 {
736 if ('0' <= ch && ch <= '9')
737 return ch - '0';
738 else if ('a' <= ch && ch <= 'f')
739 return ch - 'a' + 10;
740 else if ('A' <= ch && ch <= 'F')
741 return ch - 'A' + 10;
742 return -1;
743 }
744 static int hex2(const char *cp)
745 {
746 if (cp[0] && cp[1])
747 return (hex1(cp[0]) << 4) | hex1(cp[1]);
748 else
749 return -1;
750 }
751
752 static void emit(const char *cp, const char *ep)
753 {
754 while (*cp && (!ep || cp < ep)) {
755 if (*cp == '%') {
756 if (cp[1] == '%')
757 cp++;
758 else {
759 int ch = hex2(cp + 1);
760 if (0 <= ch) {
761 putchar(ch);
762 cp += 3;
763 continue;
764 }
765 }
766 }
767 putchar(*cp);
768 cp++;
769 }
770 }
771
772 static void show_ref(struct refinfo *info, const char *format, int quote_style)
773 {
774 const char *cp, *sp, *ep;
775
776 for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) {
777 ep = strchr(sp, ')');
778 if (cp < sp)
779 emit(cp, sp);
780 print_value(info, parse_atom(sp + 2, ep), quote_style);
781 }
782 if (*cp) {
783 sp = cp + strlen(cp);
784 emit(cp, sp);
785 }
786 putchar('\n');
787 }
788
789 static struct ref_sort *default_sort(void)
790 {
791 static const char cstr_name[] = "refname";
792
793 struct ref_sort *sort = xcalloc(1, sizeof(*sort));
794
795 sort->next = NULL;
796 sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name));
797 return sort;
798 }
799
800 int cmd_for_each_ref(int ac, const char **av, const char *prefix)
801 {
802 int i, num_refs;
803 const char *format = NULL;
804 struct ref_sort *sort = NULL, **sort_tail = &sort;
805 int maxcount = 0;
806 int quote_style = -1; /* unspecified yet */
807 struct refinfo **refs;
808 struct grab_ref_cbdata cbdata;
809
810 for (i = 1; i < ac; i++) {
811 const char *arg = av[i];
812 if (arg[0] != '-')
813 break;
814 if (!strcmp(arg, "--")) {
815 i++;
816 break;
817 }
818 if (!prefixcmp(arg, "--format=")) {
819 if (format)
820 die("more than one --format?");
821 format = arg + 9;
822 continue;
823 }
824 if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) {
825 if (0 <= quote_style)
826 die("more than one quoting style?");
827 quote_style = QUOTE_SHELL;
828 continue;
829 }
830 if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) {
831 if (0 <= quote_style)
832 die("more than one quoting style?");
833 quote_style = QUOTE_PERL;
834 continue;
835 }
836 if (!strcmp(arg, "--python") ) {
837 if (0 <= quote_style)
838 die("more than one quoting style?");
839 quote_style = QUOTE_PYTHON;
840 continue;
841 }
842 if (!strcmp(arg, "--tcl") ) {
843 if (0 <= quote_style)
844 die("more than one quoting style?");
845 quote_style = QUOTE_TCL;
846 continue;
847 }
848 if (!prefixcmp(arg, "--count=")) {
849 if (maxcount)
850 die("more than one --count?");
851 maxcount = atoi(arg + 8);
852 if (maxcount <= 0)
853 die("The number %s did not parse", arg);
854 continue;
855 }
856 if (!prefixcmp(arg, "--sort=")) {
857 struct ref_sort *s = xcalloc(1, sizeof(*s));
858 int len;
859
860 s->next = NULL;
861 *sort_tail = s;
862 sort_tail = &s->next;
863
864 arg += 7;
865 if (*arg == '-') {
866 s->reverse = 1;
867 arg++;
868 }
869 len = strlen(arg);
870 sort->atom = parse_atom(arg, arg+len);
871 continue;
872 }
873 break;
874 }
875 if (quote_style < 0)
876 quote_style = QUOTE_NONE;
877
878 if (!sort)
879 sort = default_sort();
880 sort_atom_limit = used_atom_cnt;
881 if (!format)
882 format = "%(objectname) %(objecttype)\t%(refname)";
883
884 verify_format(format);
885
886 memset(&cbdata, 0, sizeof(cbdata));
887 cbdata.grab_pattern = av + i;
888 for_each_ref(grab_single_ref, &cbdata);
889 refs = cbdata.grab_array;
890 num_refs = cbdata.grab_cnt;
891
892 for (i = 0; i < used_atom_cnt; i++) {
893 if (used_atom[i][0] == '*') {
894 need_tagged = 1;
895 break;
896 }
897 }
898
899 sort_refs(sort, refs, num_refs);
900
901 if (!maxcount || num_refs < maxcount)
902 maxcount = num_refs;
903 for (i = 0; i < maxcount; i++)
904 show_ref(refs[i], format, quote_style);
905 return 0;
906 }
Haiku port