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baffc0e7 | 1 | #include "builtin.h" |
9f613ddd JH |
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" | |
9f613ddd JH |
10 | |
11 | /* Quoting styles */ | |
12 | #define QUOTE_NONE 0 | |
13 | #define QUOTE_SHELL 1 | |
14 | #define QUOTE_PERL 2 | |
15 | #define QUOTE_PYTHON 3 | |
5558e55c | 16 | #define QUOTE_TCL 4 |
9f613ddd JH |
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" }, | |
9e1a2acf | 46 | { "parent" }, |
9f613ddd JH |
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 }, | |
3175aa1e JH |
63 | { "creator" }, |
64 | { "creatordate", FIELD_TIME }, | |
9f613ddd JH |
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; | |
3dff5379 | 139 | * %% is a quoted per-cent. |
9f613ddd JH |
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 | { | |
21666f1a NP |
177 | enum object_type type; |
178 | void *buf = read_sha1_file(sha1, &type, sz); | |
9f613ddd JH |
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")) | |
df843662 | 200 | v->s = typename(obj->type); |
9f613ddd JH |
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); | |
9e1a2acf | 265 | v->ul = num_parents(commit); |
9f613ddd JH |
266 | sprintf(s, "%lu", v->ul); |
267 | v->s = s; | |
9f613ddd JH |
268 | } |
269 | else if (!strcmp(name, "parent")) { | |
270 | int num = num_parents(commit); | |
271 | int i; | |
272 | struct commit_list *parents; | |
9e1a2acf | 273 | char *s = xmalloc(41 * num + 1); |
9f613ddd JH |
274 | v->s = s; |
275 | for (i = 0, parents = commit->parents; | |
276 | parents; | |
9e1a2acf | 277 | parents = parents->next, i = i + 41) { |
9f613ddd JH |
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 | } | |
9e1a2acf JH |
283 | if (!i) |
284 | *s = '\0'; | |
9f613ddd JH |
285 | } |
286 | } | |
287 | } | |
288 | ||
289 | static const char *find_wholine(const char *who, int wholen, const char *buf, unsigned long sz) | |
290 | { | |
291 | const char *eol; | |
292 | while (*buf) { | |
293 | if (!strncmp(buf, who, wholen) && | |
294 | buf[wholen] == ' ') | |
295 | return buf + wholen + 1; | |
296 | eol = strchr(buf, '\n'); | |
297 | if (!eol) | |
298 | return ""; | |
299 | eol++; | |
300 | if (eol[1] == '\n') | |
301 | return ""; /* end of header */ | |
302 | buf = eol; | |
303 | } | |
304 | return ""; | |
305 | } | |
306 | ||
3a55602e | 307 | static const char *copy_line(const char *buf) |
9f613ddd JH |
308 | { |
309 | const char *eol = strchr(buf, '\n'); | |
310 | char *line; | |
311 | int len; | |
312 | if (!eol) | |
313 | return ""; | |
314 | len = eol - buf; | |
315 | line = xmalloc(len + 1); | |
316 | memcpy(line, buf, len); | |
317 | line[len] = 0; | |
318 | return line; | |
319 | } | |
320 | ||
3a55602e | 321 | static const char *copy_name(const char *buf) |
9f613ddd JH |
322 | { |
323 | const char *eol = strchr(buf, '\n'); | |
324 | const char *eoname = strstr(buf, " <"); | |
325 | char *line; | |
326 | int len; | |
327 | if (!(eoname && eol && eoname < eol)) | |
328 | return ""; | |
329 | len = eoname - buf; | |
330 | line = xmalloc(len + 1); | |
331 | memcpy(line, buf, len); | |
332 | line[len] = 0; | |
333 | return line; | |
334 | } | |
335 | ||
3a55602e | 336 | static const char *copy_email(const char *buf) |
9f613ddd JH |
337 | { |
338 | const char *email = strchr(buf, '<'); | |
339 | const char *eoemail = strchr(email, '>'); | |
340 | char *line; | |
341 | int len; | |
342 | if (!email || !eoemail) | |
343 | return ""; | |
344 | eoemail++; | |
345 | len = eoemail - email; | |
346 | line = xmalloc(len + 1); | |
347 | memcpy(line, email, len); | |
348 | line[len] = 0; | |
349 | return line; | |
350 | } | |
351 | ||
352 | static void grab_date(const char *buf, struct atom_value *v) | |
353 | { | |
354 | const char *eoemail = strstr(buf, "> "); | |
355 | char *zone; | |
356 | unsigned long timestamp; | |
357 | long tz; | |
358 | ||
359 | if (!eoemail) | |
360 | goto bad; | |
361 | timestamp = strtoul(eoemail + 2, &zone, 10); | |
362 | if (timestamp == ULONG_MAX) | |
363 | goto bad; | |
364 | tz = strtol(zone, NULL, 10); | |
365 | if ((tz == LONG_MIN || tz == LONG_MAX) && errno == ERANGE) | |
366 | goto bad; | |
367 | v->s = xstrdup(show_date(timestamp, tz, 0)); | |
368 | v->ul = timestamp; | |
369 | return; | |
370 | bad: | |
371 | v->s = ""; | |
372 | v->ul = 0; | |
373 | } | |
374 | ||
375 | /* See grab_values */ | |
376 | static void grab_person(const char *who, struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz) | |
377 | { | |
378 | int i; | |
379 | int wholen = strlen(who); | |
380 | const char *wholine = NULL; | |
381 | ||
382 | for (i = 0; i < used_atom_cnt; i++) { | |
383 | const char *name = used_atom[i]; | |
384 | struct atom_value *v = &val[i]; | |
385 | if (!!deref != (*name == '*')) | |
386 | continue; | |
387 | if (deref) | |
388 | name++; | |
389 | if (strncmp(who, name, wholen)) | |
390 | continue; | |
391 | if (name[wholen] != 0 && | |
392 | strcmp(name + wholen, "name") && | |
393 | strcmp(name + wholen, "email") && | |
394 | strcmp(name + wholen, "date")) | |
395 | continue; | |
396 | if (!wholine) | |
397 | wholine = find_wholine(who, wholen, buf, sz); | |
398 | if (!wholine) | |
399 | return; /* no point looking for it */ | |
400 | if (name[wholen] == 0) | |
401 | v->s = copy_line(wholine); | |
402 | else if (!strcmp(name + wholen, "name")) | |
403 | v->s = copy_name(wholine); | |
404 | else if (!strcmp(name + wholen, "email")) | |
405 | v->s = copy_email(wholine); | |
406 | else if (!strcmp(name + wholen, "date")) | |
407 | grab_date(wholine, v); | |
408 | } | |
3175aa1e JH |
409 | |
410 | /* For a tag or a commit object, if "creator" or "creatordate" is | |
411 | * requested, do something special. | |
412 | */ | |
413 | if (strcmp(who, "tagger") && strcmp(who, "committer")) | |
414 | return; /* "author" for commit object is not wanted */ | |
415 | if (!wholine) | |
416 | wholine = find_wholine(who, wholen, buf, sz); | |
417 | if (!wholine) | |
418 | return; | |
419 | for (i = 0; i < used_atom_cnt; i++) { | |
420 | const char *name = used_atom[i]; | |
421 | struct atom_value *v = &val[i]; | |
422 | if (!!deref != (*name == '*')) | |
423 | continue; | |
424 | if (deref) | |
425 | name++; | |
426 | ||
427 | if (!strcmp(name, "creatordate")) | |
428 | grab_date(wholine, v); | |
429 | else if (!strcmp(name, "creator")) | |
430 | v->s = copy_line(wholine); | |
431 | } | |
9f613ddd JH |
432 | } |
433 | ||
434 | static void find_subpos(const char *buf, unsigned long sz, const char **sub, const char **body) | |
435 | { | |
436 | while (*buf) { | |
437 | const char *eol = strchr(buf, '\n'); | |
438 | if (!eol) | |
439 | return; | |
440 | if (eol[1] == '\n') { | |
441 | buf = eol + 1; | |
442 | break; /* found end of header */ | |
443 | } | |
444 | buf = eol + 1; | |
445 | } | |
446 | while (*buf == '\n') | |
447 | buf++; | |
448 | if (!*buf) | |
449 | return; | |
450 | *sub = buf; /* first non-empty line */ | |
451 | buf = strchr(buf, '\n'); | |
452 | if (!buf) | |
453 | return; /* no body */ | |
454 | while (*buf == '\n') | |
455 | buf++; /* skip blank between subject and body */ | |
456 | *body = buf; | |
457 | } | |
458 | ||
459 | /* See grab_values */ | |
460 | static void grab_sub_body_contents(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz) | |
461 | { | |
462 | int i; | |
463 | const char *subpos = NULL, *bodypos = NULL; | |
464 | ||
465 | for (i = 0; i < used_atom_cnt; i++) { | |
466 | const char *name = used_atom[i]; | |
467 | struct atom_value *v = &val[i]; | |
468 | if (!!deref != (*name == '*')) | |
469 | continue; | |
470 | if (deref) | |
471 | name++; | |
472 | if (strcmp(name, "subject") && | |
473 | strcmp(name, "body") && | |
474 | strcmp(name, "contents")) | |
475 | continue; | |
476 | if (!subpos) | |
477 | find_subpos(buf, sz, &subpos, &bodypos); | |
478 | if (!subpos) | |
479 | return; | |
480 | ||
481 | if (!strcmp(name, "subject")) | |
482 | v->s = copy_line(subpos); | |
483 | else if (!strcmp(name, "body")) | |
f8290630 | 484 | v->s = xstrdup(bodypos); |
9f613ddd | 485 | else if (!strcmp(name, "contents")) |
f8290630 | 486 | v->s = xstrdup(subpos); |
9f613ddd JH |
487 | } |
488 | } | |
489 | ||
490 | /* We want to have empty print-string for field requests | |
491 | * that do not apply (e.g. "authordate" for a tag object) | |
492 | */ | |
493 | static void fill_missing_values(struct atom_value *val) | |
494 | { | |
495 | int i; | |
496 | for (i = 0; i < used_atom_cnt; i++) { | |
497 | struct atom_value *v = &val[i]; | |
498 | if (v->s == NULL) | |
499 | v->s = ""; | |
500 | } | |
501 | } | |
502 | ||
503 | /* | |
504 | * val is a list of atom_value to hold returned values. Extract | |
505 | * the values for atoms in used_atom array out of (obj, buf, sz). | |
506 | * when deref is false, (obj, buf, sz) is the object that is | |
507 | * pointed at by the ref itself; otherwise it is the object the | |
508 | * ref (which is a tag) refers to. | |
509 | */ | |
510 | static void grab_values(struct atom_value *val, int deref, struct object *obj, void *buf, unsigned long sz) | |
511 | { | |
512 | grab_common_values(val, deref, obj, buf, sz); | |
513 | switch (obj->type) { | |
514 | case OBJ_TAG: | |
515 | grab_tag_values(val, deref, obj, buf, sz); | |
516 | grab_sub_body_contents(val, deref, obj, buf, sz); | |
517 | grab_person("tagger", val, deref, obj, buf, sz); | |
518 | break; | |
519 | case OBJ_COMMIT: | |
520 | grab_commit_values(val, deref, obj, buf, sz); | |
521 | grab_sub_body_contents(val, deref, obj, buf, sz); | |
522 | grab_person("author", val, deref, obj, buf, sz); | |
523 | grab_person("committer", val, deref, obj, buf, sz); | |
524 | break; | |
525 | case OBJ_TREE: | |
526 | // grab_tree_values(val, deref, obj, buf, sz); | |
527 | break; | |
528 | case OBJ_BLOB: | |
529 | // grab_blob_values(val, deref, obj, buf, sz); | |
530 | break; | |
531 | default: | |
532 | die("Eh? Object of type %d?", obj->type); | |
533 | } | |
534 | } | |
535 | ||
536 | /* | |
537 | * Parse the object referred by ref, and grab needed value. | |
538 | */ | |
539 | static void populate_value(struct refinfo *ref) | |
540 | { | |
541 | void *buf; | |
542 | struct object *obj; | |
543 | int eaten, i; | |
544 | unsigned long size; | |
545 | const unsigned char *tagged; | |
546 | ||
547 | ref->value = xcalloc(sizeof(struct atom_value), used_atom_cnt); | |
548 | ||
549 | buf = get_obj(ref->objectname, &obj, &size, &eaten); | |
550 | if (!buf) | |
551 | die("missing object %s for %s", | |
552 | sha1_to_hex(ref->objectname), ref->refname); | |
553 | if (!obj) | |
554 | die("parse_object_buffer failed on %s for %s", | |
555 | sha1_to_hex(ref->objectname), ref->refname); | |
556 | ||
557 | /* Fill in specials first */ | |
558 | for (i = 0; i < used_atom_cnt; i++) { | |
559 | const char *name = used_atom[i]; | |
560 | struct atom_value *v = &ref->value[i]; | |
561 | if (!strcmp(name, "refname")) | |
562 | v->s = ref->refname; | |
563 | else if (!strcmp(name, "*refname")) { | |
564 | int len = strlen(ref->refname); | |
565 | char *s = xmalloc(len + 4); | |
566 | sprintf(s, "%s^{}", ref->refname); | |
567 | v->s = s; | |
568 | } | |
569 | } | |
570 | ||
571 | grab_values(ref->value, 0, obj, buf, size); | |
572 | if (!eaten) | |
573 | free(buf); | |
574 | ||
575 | /* If there is no atom that wants to know about tagged | |
576 | * object, we are done. | |
577 | */ | |
578 | if (!need_tagged || (obj->type != OBJ_TAG)) | |
579 | return; | |
580 | ||
581 | /* If it is a tag object, see if we use a value that derefs | |
582 | * the object, and if we do grab the object it refers to. | |
583 | */ | |
584 | tagged = ((struct tag *)obj)->tagged->sha1; | |
585 | ||
586 | /* NEEDSWORK: This derefs tag only once, which | |
587 | * is good to deal with chains of trust, but | |
588 | * is not consistent with what deref_tag() does | |
589 | * which peels the onion to the core. | |
590 | */ | |
591 | buf = get_obj(tagged, &obj, &size, &eaten); | |
592 | if (!buf) | |
593 | die("missing object %s for %s", | |
594 | sha1_to_hex(tagged), ref->refname); | |
595 | if (!obj) | |
596 | die("parse_object_buffer failed on %s for %s", | |
597 | sha1_to_hex(tagged), ref->refname); | |
598 | grab_values(ref->value, 1, obj, buf, size); | |
599 | if (!eaten) | |
600 | free(buf); | |
601 | } | |
602 | ||
603 | /* | |
604 | * Given a ref, return the value for the atom. This lazily gets value | |
605 | * out of the object by calling populate value. | |
606 | */ | |
607 | static void get_value(struct refinfo *ref, int atom, struct atom_value **v) | |
608 | { | |
609 | if (!ref->value) { | |
610 | populate_value(ref); | |
611 | fill_missing_values(ref->value); | |
612 | } | |
613 | *v = &ref->value[atom]; | |
614 | } | |
615 | ||
340adb8b JH |
616 | struct grab_ref_cbdata { |
617 | struct refinfo **grab_array; | |
618 | const char **grab_pattern; | |
619 | int grab_cnt; | |
620 | }; | |
9f613ddd JH |
621 | |
622 | /* | |
623 | * A call-back given to for_each_ref(). It is unfortunate that we | |
624 | * need to use global variables to pass extra information to this | |
625 | * function. | |
626 | */ | |
340adb8b | 627 | static int grab_single_ref(const char *refname, const unsigned char *sha1, int flag, void *cb_data) |
9f613ddd | 628 | { |
340adb8b | 629 | struct grab_ref_cbdata *cb = cb_data; |
9f613ddd JH |
630 | struct refinfo *ref; |
631 | int cnt; | |
632 | ||
340adb8b | 633 | if (*cb->grab_pattern) { |
9f613ddd JH |
634 | const char **pattern; |
635 | int namelen = strlen(refname); | |
340adb8b | 636 | for (pattern = cb->grab_pattern; *pattern; pattern++) { |
9f613ddd JH |
637 | const char *p = *pattern; |
638 | int plen = strlen(p); | |
639 | ||
640 | if ((plen <= namelen) && | |
641 | !strncmp(refname, p, plen) && | |
642 | (refname[plen] == '\0' || | |
643 | refname[plen] == '/')) | |
644 | break; | |
645 | if (!fnmatch(p, refname, FNM_PATHNAME)) | |
646 | break; | |
647 | } | |
648 | if (!*pattern) | |
649 | return 0; | |
650 | } | |
651 | ||
652 | /* We do not open the object yet; sort may only need refname | |
653 | * to do its job and the resulting list may yet to be pruned | |
654 | * by maxcount logic. | |
655 | */ | |
656 | ref = xcalloc(1, sizeof(*ref)); | |
657 | ref->refname = xstrdup(refname); | |
658 | hashcpy(ref->objectname, sha1); | |
659 | ||
340adb8b JH |
660 | cnt = cb->grab_cnt; |
661 | cb->grab_array = xrealloc(cb->grab_array, | |
662 | sizeof(*cb->grab_array) * (cnt + 1)); | |
663 | cb->grab_array[cnt++] = ref; | |
664 | cb->grab_cnt = cnt; | |
9f613ddd JH |
665 | return 0; |
666 | } | |
667 | ||
9f613ddd JH |
668 | static int cmp_ref_sort(struct ref_sort *s, struct refinfo *a, struct refinfo *b) |
669 | { | |
670 | struct atom_value *va, *vb; | |
671 | int cmp; | |
672 | cmp_type cmp_type = used_atom_type[s->atom]; | |
673 | ||
674 | get_value(a, s->atom, &va); | |
675 | get_value(b, s->atom, &vb); | |
676 | switch (cmp_type) { | |
677 | case FIELD_STR: | |
678 | cmp = strcmp(va->s, vb->s); | |
679 | break; | |
680 | default: | |
681 | if (va->ul < vb->ul) | |
682 | cmp = -1; | |
683 | else if (va->ul == vb->ul) | |
684 | cmp = 0; | |
685 | else | |
686 | cmp = 1; | |
687 | break; | |
688 | } | |
689 | return (s->reverse) ? -cmp : cmp; | |
690 | } | |
691 | ||
692 | static struct ref_sort *ref_sort; | |
693 | static int compare_refs(const void *a_, const void *b_) | |
694 | { | |
695 | struct refinfo *a = *((struct refinfo **)a_); | |
696 | struct refinfo *b = *((struct refinfo **)b_); | |
697 | struct ref_sort *s; | |
698 | ||
699 | for (s = ref_sort; s; s = s->next) { | |
700 | int cmp = cmp_ref_sort(s, a, b); | |
701 | if (cmp) | |
702 | return cmp; | |
703 | } | |
704 | return 0; | |
705 | } | |
706 | ||
707 | static void sort_refs(struct ref_sort *sort, struct refinfo **refs, int num_refs) | |
708 | { | |
709 | ref_sort = sort; | |
710 | qsort(refs, num_refs, sizeof(struct refinfo *), compare_refs); | |
711 | } | |
712 | ||
713 | static void print_value(struct refinfo *ref, int atom, int quote_style) | |
714 | { | |
715 | struct atom_value *v; | |
716 | get_value(ref, atom, &v); | |
717 | switch (quote_style) { | |
718 | case QUOTE_NONE: | |
719 | fputs(v->s, stdout); | |
720 | break; | |
721 | case QUOTE_SHELL: | |
722 | sq_quote_print(stdout, v->s); | |
723 | break; | |
724 | case QUOTE_PERL: | |
725 | perl_quote_print(stdout, v->s); | |
726 | break; | |
727 | case QUOTE_PYTHON: | |
728 | python_quote_print(stdout, v->s); | |
729 | break; | |
5558e55c SP |
730 | case QUOTE_TCL: |
731 | tcl_quote_print(stdout, v->s); | |
732 | break; | |
9f613ddd JH |
733 | } |
734 | } | |
735 | ||
736 | static int hex1(char ch) | |
737 | { | |
738 | if ('0' <= ch && ch <= '9') | |
739 | return ch - '0'; | |
740 | else if ('a' <= ch && ch <= 'f') | |
741 | return ch - 'a' + 10; | |
742 | else if ('A' <= ch && ch <= 'F') | |
743 | return ch - 'A' + 10; | |
744 | return -1; | |
745 | } | |
746 | static int hex2(const char *cp) | |
747 | { | |
748 | if (cp[0] && cp[1]) | |
749 | return (hex1(cp[0]) << 4) | hex1(cp[1]); | |
750 | else | |
751 | return -1; | |
752 | } | |
753 | ||
754 | static void emit(const char *cp, const char *ep) | |
755 | { | |
756 | while (*cp && (!ep || cp < ep)) { | |
757 | if (*cp == '%') { | |
758 | if (cp[1] == '%') | |
759 | cp++; | |
760 | else { | |
761 | int ch = hex2(cp + 1); | |
762 | if (0 <= ch) { | |
763 | putchar(ch); | |
764 | cp += 3; | |
765 | continue; | |
766 | } | |
767 | } | |
768 | } | |
769 | putchar(*cp); | |
770 | cp++; | |
771 | } | |
772 | } | |
773 | ||
774 | static void show_ref(struct refinfo *info, const char *format, int quote_style) | |
775 | { | |
776 | const char *cp, *sp, *ep; | |
777 | ||
778 | for (cp = format; *cp && (sp = find_next(cp)); cp = ep + 1) { | |
779 | ep = strchr(sp, ')'); | |
780 | if (cp < sp) | |
781 | emit(cp, sp); | |
782 | print_value(info, parse_atom(sp + 2, ep), quote_style); | |
783 | } | |
784 | if (*cp) { | |
785 | sp = cp + strlen(cp); | |
786 | emit(cp, sp); | |
787 | } | |
788 | putchar('\n'); | |
789 | } | |
790 | ||
791 | static struct ref_sort *default_sort(void) | |
792 | { | |
793 | static const char cstr_name[] = "refname"; | |
794 | ||
795 | struct ref_sort *sort = xcalloc(1, sizeof(*sort)); | |
796 | ||
797 | sort->next = NULL; | |
798 | sort->atom = parse_atom(cstr_name, cstr_name + strlen(cstr_name)); | |
799 | return sort; | |
800 | } | |
801 | ||
baffc0e7 | 802 | int cmd_for_each_ref(int ac, const char **av, const char *prefix) |
9f613ddd JH |
803 | { |
804 | int i, num_refs; | |
805 | const char *format = NULL; | |
806 | struct ref_sort *sort = NULL, **sort_tail = &sort; | |
807 | int maxcount = 0; | |
808 | int quote_style = -1; /* unspecified yet */ | |
809 | struct refinfo **refs; | |
340adb8b | 810 | struct grab_ref_cbdata cbdata; |
9f613ddd JH |
811 | |
812 | for (i = 1; i < ac; i++) { | |
813 | const char *arg = av[i]; | |
814 | if (arg[0] != '-') | |
815 | break; | |
816 | if (!strcmp(arg, "--")) { | |
817 | i++; | |
818 | break; | |
819 | } | |
cc44c765 | 820 | if (!prefixcmp(arg, "--format=")) { |
9f613ddd JH |
821 | if (format) |
822 | die("more than one --format?"); | |
823 | format = arg + 9; | |
824 | continue; | |
825 | } | |
826 | if (!strcmp(arg, "-s") || !strcmp(arg, "--shell") ) { | |
827 | if (0 <= quote_style) | |
828 | die("more than one quoting style?"); | |
829 | quote_style = QUOTE_SHELL; | |
830 | continue; | |
831 | } | |
832 | if (!strcmp(arg, "-p") || !strcmp(arg, "--perl") ) { | |
833 | if (0 <= quote_style) | |
834 | die("more than one quoting style?"); | |
835 | quote_style = QUOTE_PERL; | |
836 | continue; | |
837 | } | |
838 | if (!strcmp(arg, "--python") ) { | |
839 | if (0 <= quote_style) | |
840 | die("more than one quoting style?"); | |
841 | quote_style = QUOTE_PYTHON; | |
842 | continue; | |
843 | } | |
5558e55c SP |
844 | if (!strcmp(arg, "--tcl") ) { |
845 | if (0 <= quote_style) | |
846 | die("more than one quoting style?"); | |
847 | quote_style = QUOTE_TCL; | |
848 | continue; | |
849 | } | |
cc44c765 | 850 | if (!prefixcmp(arg, "--count=")) { |
9f613ddd JH |
851 | if (maxcount) |
852 | die("more than one --count?"); | |
853 | maxcount = atoi(arg + 8); | |
854 | if (maxcount <= 0) | |
855 | die("The number %s did not parse", arg); | |
856 | continue; | |
857 | } | |
cc44c765 | 858 | if (!prefixcmp(arg, "--sort=")) { |
9f613ddd JH |
859 | struct ref_sort *s = xcalloc(1, sizeof(*s)); |
860 | int len; | |
861 | ||
862 | s->next = NULL; | |
863 | *sort_tail = s; | |
864 | sort_tail = &s->next; | |
865 | ||
866 | arg += 7; | |
867 | if (*arg == '-') { | |
868 | s->reverse = 1; | |
869 | arg++; | |
870 | } | |
871 | len = strlen(arg); | |
872 | sort->atom = parse_atom(arg, arg+len); | |
873 | continue; | |
874 | } | |
875 | break; | |
876 | } | |
877 | if (quote_style < 0) | |
878 | quote_style = QUOTE_NONE; | |
879 | ||
880 | if (!sort) | |
881 | sort = default_sort(); | |
882 | sort_atom_limit = used_atom_cnt; | |
883 | if (!format) | |
884 | format = "%(objectname) %(objecttype)\t%(refname)"; | |
885 | ||
886 | verify_format(format); | |
887 | ||
340adb8b JH |
888 | memset(&cbdata, 0, sizeof(cbdata)); |
889 | cbdata.grab_pattern = av + i; | |
890 | for_each_ref(grab_single_ref, &cbdata); | |
891 | refs = cbdata.grab_array; | |
892 | num_refs = cbdata.grab_cnt; | |
9f613ddd JH |
893 | |
894 | for (i = 0; i < used_atom_cnt; i++) { | |
895 | if (used_atom[i][0] == '*') { | |
896 | need_tagged = 1; | |
897 | break; | |
898 | } | |
899 | } | |
900 | ||
901 | sort_refs(sort, refs, num_refs); | |
902 | ||
903 | if (!maxcount || num_refs < maxcount) | |
904 | maxcount = num_refs; | |
905 | for (i = 0; i < maxcount; i++) | |
906 | show_ref(refs[i], format, quote_style); | |
907 | return 0; | |
908 | } |