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1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "refs.h" | |
4 | #include "object-store.h" | |
5 | #include "commit.h" | |
6 | #include "tree-walk.h" | |
7 | #include "attr.h" | |
8 | #include "archive.h" | |
9 | #include "parse-options.h" | |
10 | #include "unpack-trees.h" | |
11 | #include "dir.h" | |
12 | ||
13 | static char const * const archive_usage[] = { | |
14 | N_("git archive [<options>] <tree-ish> [<path>...]"), | |
15 | N_("git archive --list"), | |
16 | N_("git archive --remote <repo> [--exec <cmd>] [<options>] <tree-ish> [<path>...]"), | |
17 | N_("git archive --remote <repo> [--exec <cmd>] --list"), | |
18 | NULL | |
19 | }; | |
20 | ||
21 | static const struct archiver **archivers; | |
22 | static int nr_archivers; | |
23 | static int alloc_archivers; | |
24 | static int remote_allow_unreachable; | |
25 | ||
26 | void register_archiver(struct archiver *ar) | |
27 | { | |
28 | ALLOC_GROW(archivers, nr_archivers + 1, alloc_archivers); | |
29 | archivers[nr_archivers++] = ar; | |
30 | } | |
31 | ||
32 | void init_archivers(void) | |
33 | { | |
34 | init_tar_archiver(); | |
35 | init_zip_archiver(); | |
36 | } | |
37 | ||
38 | static void format_subst(const struct commit *commit, | |
39 | const char *src, size_t len, | |
40 | struct strbuf *buf) | |
41 | { | |
42 | char *to_free = NULL; | |
43 | struct strbuf fmt = STRBUF_INIT; | |
44 | struct pretty_print_context ctx = {0}; | |
45 | ctx.date_mode.type = DATE_NORMAL; | |
46 | ctx.abbrev = DEFAULT_ABBREV; | |
47 | ||
48 | if (src == buf->buf) | |
49 | to_free = strbuf_detach(buf, NULL); | |
50 | for (;;) { | |
51 | const char *b, *c; | |
52 | ||
53 | b = memmem(src, len, "$Format:", 8); | |
54 | if (!b) | |
55 | break; | |
56 | c = memchr(b + 8, '$', (src + len) - b - 8); | |
57 | if (!c) | |
58 | break; | |
59 | ||
60 | strbuf_reset(&fmt); | |
61 | strbuf_add(&fmt, b + 8, c - b - 8); | |
62 | ||
63 | strbuf_add(buf, src, b - src); | |
64 | format_commit_message(commit, fmt.buf, buf, &ctx); | |
65 | len -= c + 1 - src; | |
66 | src = c + 1; | |
67 | } | |
68 | strbuf_add(buf, src, len); | |
69 | strbuf_release(&fmt); | |
70 | free(to_free); | |
71 | } | |
72 | ||
73 | static void *object_file_to_archive(const struct archiver_args *args, | |
74 | const char *path, | |
75 | const struct object_id *oid, | |
76 | unsigned int mode, | |
77 | enum object_type *type, | |
78 | unsigned long *sizep) | |
79 | { | |
80 | void *buffer; | |
81 | const struct commit *commit = args->convert ? args->commit : NULL; | |
82 | struct checkout_metadata meta; | |
83 | ||
84 | init_checkout_metadata(&meta, args->refname, | |
85 | args->commit_oid ? args->commit_oid : | |
86 | (args->tree ? &args->tree->object.oid : NULL), oid); | |
87 | ||
88 | path += args->baselen; | |
89 | buffer = read_object_file(oid, type, sizep); | |
90 | if (buffer && S_ISREG(mode)) { | |
91 | struct strbuf buf = STRBUF_INIT; | |
92 | size_t size = 0; | |
93 | ||
94 | strbuf_attach(&buf, buffer, *sizep, *sizep + 1); | |
95 | convert_to_working_tree(args->repo->index, path, buf.buf, buf.len, &buf, &meta); | |
96 | if (commit) | |
97 | format_subst(commit, buf.buf, buf.len, &buf); | |
98 | buffer = strbuf_detach(&buf, &size); | |
99 | *sizep = size; | |
100 | } | |
101 | ||
102 | return buffer; | |
103 | } | |
104 | ||
105 | struct directory { | |
106 | struct directory *up; | |
107 | struct object_id oid; | |
108 | int baselen, len; | |
109 | unsigned mode; | |
110 | int stage; | |
111 | char path[FLEX_ARRAY]; | |
112 | }; | |
113 | ||
114 | struct archiver_context { | |
115 | struct archiver_args *args; | |
116 | write_archive_entry_fn_t write_entry; | |
117 | struct directory *bottom; | |
118 | }; | |
119 | ||
120 | static const struct attr_check *get_archive_attrs(struct index_state *istate, | |
121 | const char *path) | |
122 | { | |
123 | static struct attr_check *check; | |
124 | if (!check) | |
125 | check = attr_check_initl("export-ignore", "export-subst", NULL); | |
126 | git_check_attr(istate, path, check); | |
127 | return check; | |
128 | } | |
129 | ||
130 | static int check_attr_export_ignore(const struct attr_check *check) | |
131 | { | |
132 | return check && ATTR_TRUE(check->items[0].value); | |
133 | } | |
134 | ||
135 | static int check_attr_export_subst(const struct attr_check *check) | |
136 | { | |
137 | return check && ATTR_TRUE(check->items[1].value); | |
138 | } | |
139 | ||
140 | static int write_archive_entry(const struct object_id *oid, const char *base, | |
141 | int baselen, const char *filename, unsigned mode, int stage, | |
142 | void *context) | |
143 | { | |
144 | static struct strbuf path = STRBUF_INIT; | |
145 | struct archiver_context *c = context; | |
146 | struct archiver_args *args = c->args; | |
147 | write_archive_entry_fn_t write_entry = c->write_entry; | |
148 | int err; | |
149 | const char *path_without_prefix; | |
150 | unsigned long size; | |
151 | void *buffer; | |
152 | enum object_type type; | |
153 | ||
154 | args->convert = 0; | |
155 | strbuf_reset(&path); | |
156 | strbuf_grow(&path, PATH_MAX); | |
157 | strbuf_add(&path, args->base, args->baselen); | |
158 | strbuf_add(&path, base, baselen); | |
159 | strbuf_addstr(&path, filename); | |
160 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) | |
161 | strbuf_addch(&path, '/'); | |
162 | path_without_prefix = path.buf + args->baselen; | |
163 | ||
164 | if (!S_ISDIR(mode)) { | |
165 | const struct attr_check *check; | |
166 | check = get_archive_attrs(args->repo->index, path_without_prefix); | |
167 | if (check_attr_export_ignore(check)) | |
168 | return 0; | |
169 | args->convert = check_attr_export_subst(check); | |
170 | } | |
171 | ||
172 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) { | |
173 | if (args->verbose) | |
174 | fprintf(stderr, "%.*s\n", (int)path.len, path.buf); | |
175 | err = write_entry(args, oid, path.buf, path.len, mode, NULL, 0); | |
176 | if (err) | |
177 | return err; | |
178 | return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0); | |
179 | } | |
180 | ||
181 | if (args->verbose) | |
182 | fprintf(stderr, "%.*s\n", (int)path.len, path.buf); | |
183 | ||
184 | /* Stream it? */ | |
185 | if (S_ISREG(mode) && !args->convert && | |
186 | oid_object_info(args->repo, oid, &size) == OBJ_BLOB && | |
187 | size > big_file_threshold) | |
188 | return write_entry(args, oid, path.buf, path.len, mode, NULL, size); | |
189 | ||
190 | buffer = object_file_to_archive(args, path.buf, oid, mode, &type, &size); | |
191 | if (!buffer) | |
192 | return error(_("cannot read %s"), oid_to_hex(oid)); | |
193 | err = write_entry(args, oid, path.buf, path.len, mode, buffer, size); | |
194 | free(buffer); | |
195 | return err; | |
196 | } | |
197 | ||
198 | static void queue_directory(const unsigned char *sha1, | |
199 | struct strbuf *base, const char *filename, | |
200 | unsigned mode, int stage, struct archiver_context *c) | |
201 | { | |
202 | struct directory *d; | |
203 | size_t len = st_add4(base->len, 1, strlen(filename), 1); | |
204 | d = xmalloc(st_add(sizeof(*d), len)); | |
205 | d->up = c->bottom; | |
206 | d->baselen = base->len; | |
207 | d->mode = mode; | |
208 | d->stage = stage; | |
209 | c->bottom = d; | |
210 | d->len = xsnprintf(d->path, len, "%.*s%s/", (int)base->len, base->buf, filename); | |
211 | hashcpy(d->oid.hash, sha1); | |
212 | } | |
213 | ||
214 | static int write_directory(struct archiver_context *c) | |
215 | { | |
216 | struct directory *d = c->bottom; | |
217 | int ret; | |
218 | ||
219 | if (!d) | |
220 | return 0; | |
221 | c->bottom = d->up; | |
222 | d->path[d->len - 1] = '\0'; /* no trailing slash */ | |
223 | ret = | |
224 | write_directory(c) || | |
225 | write_archive_entry(&d->oid, d->path, d->baselen, | |
226 | d->path + d->baselen, d->mode, | |
227 | d->stage, c) != READ_TREE_RECURSIVE; | |
228 | free(d); | |
229 | return ret ? -1 : 0; | |
230 | } | |
231 | ||
232 | static int queue_or_write_archive_entry(const struct object_id *oid, | |
233 | struct strbuf *base, const char *filename, | |
234 | unsigned mode, int stage, void *context) | |
235 | { | |
236 | struct archiver_context *c = context; | |
237 | ||
238 | while (c->bottom && | |
239 | !(base->len >= c->bottom->len && | |
240 | !strncmp(base->buf, c->bottom->path, c->bottom->len))) { | |
241 | struct directory *next = c->bottom->up; | |
242 | free(c->bottom); | |
243 | c->bottom = next; | |
244 | } | |
245 | ||
246 | if (S_ISDIR(mode)) { | |
247 | size_t baselen = base->len; | |
248 | const struct attr_check *check; | |
249 | ||
250 | /* Borrow base, but restore its original value when done. */ | |
251 | strbuf_addstr(base, filename); | |
252 | strbuf_addch(base, '/'); | |
253 | check = get_archive_attrs(c->args->repo->index, base->buf); | |
254 | strbuf_setlen(base, baselen); | |
255 | ||
256 | if (check_attr_export_ignore(check)) | |
257 | return 0; | |
258 | queue_directory(oid->hash, base, filename, | |
259 | mode, stage, c); | |
260 | return READ_TREE_RECURSIVE; | |
261 | } | |
262 | ||
263 | if (write_directory(c)) | |
264 | return -1; | |
265 | return write_archive_entry(oid, base->buf, base->len, filename, mode, | |
266 | stage, context); | |
267 | } | |
268 | ||
269 | struct extra_file_info { | |
270 | char *base; | |
271 | struct stat stat; | |
272 | }; | |
273 | ||
274 | int write_archive_entries(struct archiver_args *args, | |
275 | write_archive_entry_fn_t write_entry) | |
276 | { | |
277 | struct archiver_context context; | |
278 | struct unpack_trees_options opts; | |
279 | struct tree_desc t; | |
280 | int err; | |
281 | struct strbuf path_in_archive = STRBUF_INIT; | |
282 | struct strbuf content = STRBUF_INIT; | |
283 | struct object_id fake_oid = null_oid; | |
284 | int i; | |
285 | ||
286 | if (args->baselen > 0 && args->base[args->baselen - 1] == '/') { | |
287 | size_t len = args->baselen; | |
288 | ||
289 | while (len > 1 && args->base[len - 2] == '/') | |
290 | len--; | |
291 | if (args->verbose) | |
292 | fprintf(stderr, "%.*s\n", (int)len, args->base); | |
293 | err = write_entry(args, &args->tree->object.oid, args->base, | |
294 | len, 040777, NULL, 0); | |
295 | if (err) | |
296 | return err; | |
297 | } | |
298 | ||
299 | memset(&context, 0, sizeof(context)); | |
300 | context.args = args; | |
301 | context.write_entry = write_entry; | |
302 | ||
303 | /* | |
304 | * Setup index and instruct attr to read index only | |
305 | */ | |
306 | if (!args->worktree_attributes) { | |
307 | memset(&opts, 0, sizeof(opts)); | |
308 | opts.index_only = 1; | |
309 | opts.head_idx = -1; | |
310 | opts.src_index = args->repo->index; | |
311 | opts.dst_index = args->repo->index; | |
312 | opts.fn = oneway_merge; | |
313 | init_tree_desc(&t, args->tree->buffer, args->tree->size); | |
314 | if (unpack_trees(1, &t, &opts)) | |
315 | return -1; | |
316 | git_attr_set_direction(GIT_ATTR_INDEX); | |
317 | } | |
318 | ||
319 | err = read_tree_recursive(args->repo, args->tree, "", | |
320 | 0, 0, &args->pathspec, | |
321 | queue_or_write_archive_entry, | |
322 | &context); | |
323 | if (err == READ_TREE_RECURSIVE) | |
324 | err = 0; | |
325 | while (context.bottom) { | |
326 | struct directory *next = context.bottom->up; | |
327 | free(context.bottom); | |
328 | context.bottom = next; | |
329 | } | |
330 | ||
331 | for (i = 0; i < args->extra_files.nr; i++) { | |
332 | struct string_list_item *item = args->extra_files.items + i; | |
333 | char *path = item->string; | |
334 | struct extra_file_info *info = item->util; | |
335 | ||
336 | put_be64(fake_oid.hash, i + 1); | |
337 | ||
338 | strbuf_reset(&path_in_archive); | |
339 | if (info->base) | |
340 | strbuf_addstr(&path_in_archive, info->base); | |
341 | strbuf_addstr(&path_in_archive, basename(path)); | |
342 | ||
343 | strbuf_reset(&content); | |
344 | if (strbuf_read_file(&content, path, info->stat.st_size) < 0) | |
345 | err = error_errno(_("could not read '%s'"), path); | |
346 | else | |
347 | err = write_entry(args, &fake_oid, path_in_archive.buf, | |
348 | path_in_archive.len, | |
349 | info->stat.st_mode, | |
350 | content.buf, content.len); | |
351 | if (err) | |
352 | break; | |
353 | } | |
354 | strbuf_release(&path_in_archive); | |
355 | strbuf_release(&content); | |
356 | ||
357 | return err; | |
358 | } | |
359 | ||
360 | static const struct archiver *lookup_archiver(const char *name) | |
361 | { | |
362 | int i; | |
363 | ||
364 | if (!name) | |
365 | return NULL; | |
366 | ||
367 | for (i = 0; i < nr_archivers; i++) { | |
368 | if (!strcmp(name, archivers[i]->name)) | |
369 | return archivers[i]; | |
370 | } | |
371 | return NULL; | |
372 | } | |
373 | ||
374 | struct path_exists_context { | |
375 | struct pathspec pathspec; | |
376 | struct archiver_args *args; | |
377 | }; | |
378 | ||
379 | static int reject_entry(const struct object_id *oid, struct strbuf *base, | |
380 | const char *filename, unsigned mode, | |
381 | int stage, void *context) | |
382 | { | |
383 | int ret = -1; | |
384 | struct path_exists_context *ctx = context; | |
385 | ||
386 | if (S_ISDIR(mode)) { | |
387 | struct strbuf sb = STRBUF_INIT; | |
388 | strbuf_addbuf(&sb, base); | |
389 | strbuf_addstr(&sb, filename); | |
390 | if (!match_pathspec(ctx->args->repo->index, | |
391 | &ctx->pathspec, | |
392 | sb.buf, sb.len, 0, NULL, 1)) | |
393 | ret = READ_TREE_RECURSIVE; | |
394 | strbuf_release(&sb); | |
395 | } | |
396 | return ret; | |
397 | } | |
398 | ||
399 | static int path_exists(struct archiver_args *args, const char *path) | |
400 | { | |
401 | const char *paths[] = { path, NULL }; | |
402 | struct path_exists_context ctx; | |
403 | int ret; | |
404 | ||
405 | ctx.args = args; | |
406 | parse_pathspec(&ctx.pathspec, 0, 0, "", paths); | |
407 | ctx.pathspec.recursive = 1; | |
408 | ret = read_tree_recursive(args->repo, args->tree, "", | |
409 | 0, 0, &ctx.pathspec, | |
410 | reject_entry, &ctx); | |
411 | clear_pathspec(&ctx.pathspec); | |
412 | return ret != 0; | |
413 | } | |
414 | ||
415 | static void parse_pathspec_arg(const char **pathspec, | |
416 | struct archiver_args *ar_args) | |
417 | { | |
418 | /* | |
419 | * must be consistent with parse_pathspec in path_exists() | |
420 | * Also if pathspec patterns are dependent, we're in big | |
421 | * trouble as we test each one separately | |
422 | */ | |
423 | parse_pathspec(&ar_args->pathspec, 0, | |
424 | PATHSPEC_PREFER_FULL, | |
425 | "", pathspec); | |
426 | ar_args->pathspec.recursive = 1; | |
427 | if (pathspec) { | |
428 | while (*pathspec) { | |
429 | if (**pathspec && !path_exists(ar_args, *pathspec)) | |
430 | die(_("pathspec '%s' did not match any files"), *pathspec); | |
431 | pathspec++; | |
432 | } | |
433 | } | |
434 | } | |
435 | ||
436 | static void parse_treeish_arg(const char **argv, | |
437 | struct archiver_args *ar_args, const char *prefix, | |
438 | int remote) | |
439 | { | |
440 | const char *name = argv[0]; | |
441 | const struct object_id *commit_oid; | |
442 | time_t archive_time; | |
443 | struct tree *tree; | |
444 | const struct commit *commit; | |
445 | struct object_id oid; | |
446 | char *ref = NULL; | |
447 | ||
448 | /* Remotes are only allowed to fetch actual refs */ | |
449 | if (remote && !remote_allow_unreachable) { | |
450 | const char *colon = strchrnul(name, ':'); | |
451 | int refnamelen = colon - name; | |
452 | ||
453 | if (!dwim_ref(name, refnamelen, &oid, &ref, 0)) | |
454 | die(_("no such ref: %.*s"), refnamelen, name); | |
455 | } else { | |
456 | dwim_ref(name, strlen(name), &oid, &ref, 0); | |
457 | } | |
458 | ||
459 | if (get_oid(name, &oid)) | |
460 | die(_("not a valid object name: %s"), name); | |
461 | ||
462 | commit = lookup_commit_reference_gently(ar_args->repo, &oid, 1); | |
463 | if (commit) { | |
464 | commit_oid = &commit->object.oid; | |
465 | archive_time = commit->date; | |
466 | } else { | |
467 | commit_oid = NULL; | |
468 | archive_time = time(NULL); | |
469 | } | |
470 | ||
471 | tree = parse_tree_indirect(&oid); | |
472 | if (tree == NULL) | |
473 | die(_("not a tree object: %s"), oid_to_hex(&oid)); | |
474 | ||
475 | if (prefix) { | |
476 | struct object_id tree_oid; | |
477 | unsigned short mode; | |
478 | int err; | |
479 | ||
480 | err = get_tree_entry(ar_args->repo, | |
481 | &tree->object.oid, | |
482 | prefix, &tree_oid, | |
483 | &mode); | |
484 | if (err || !S_ISDIR(mode)) | |
485 | die(_("current working directory is untracked")); | |
486 | ||
487 | tree = parse_tree_indirect(&tree_oid); | |
488 | } | |
489 | ar_args->refname = ref; | |
490 | ar_args->tree = tree; | |
491 | ar_args->commit_oid = commit_oid; | |
492 | ar_args->commit = commit; | |
493 | ar_args->time = archive_time; | |
494 | } | |
495 | ||
496 | static void extra_file_info_clear(void *util, const char *str) | |
497 | { | |
498 | struct extra_file_info *info = util; | |
499 | free(info->base); | |
500 | free(info); | |
501 | } | |
502 | ||
503 | static int add_file_cb(const struct option *opt, const char *arg, int unset) | |
504 | { | |
505 | struct archiver_args *args = opt->value; | |
506 | const char **basep = (const char **)opt->defval; | |
507 | const char *base = *basep; | |
508 | char *path; | |
509 | struct string_list_item *item; | |
510 | struct extra_file_info *info; | |
511 | ||
512 | if (unset) { | |
513 | string_list_clear_func(&args->extra_files, | |
514 | extra_file_info_clear); | |
515 | return 0; | |
516 | } | |
517 | ||
518 | if (!arg) | |
519 | return -1; | |
520 | ||
521 | path = prefix_filename(args->prefix, arg); | |
522 | item = string_list_append_nodup(&args->extra_files, path); | |
523 | item->util = info = xmalloc(sizeof(*info)); | |
524 | info->base = xstrdup_or_null(base); | |
525 | if (stat(path, &info->stat)) | |
526 | die(_("File not found: %s"), path); | |
527 | if (!S_ISREG(info->stat.st_mode)) | |
528 | die(_("Not a regular file: %s"), path); | |
529 | return 0; | |
530 | } | |
531 | ||
532 | static int number_callback(const struct option *opt, const char *arg, int unset) | |
533 | { | |
534 | BUG_ON_OPT_NEG(unset); | |
535 | *(int *)opt->value = strtol(arg, NULL, 10); | |
536 | return 0; | |
537 | } | |
538 | ||
539 | static int parse_archive_args(int argc, const char **argv, | |
540 | const struct archiver **ar, struct archiver_args *args, | |
541 | const char *name_hint, int is_remote) | |
542 | { | |
543 | const char *format = NULL; | |
544 | const char *base = NULL; | |
545 | const char *remote = NULL; | |
546 | const char *exec = NULL; | |
547 | const char *output = NULL; | |
548 | int compression_level = -1; | |
549 | int verbose = 0; | |
550 | int i; | |
551 | int list = 0; | |
552 | int worktree_attributes = 0; | |
553 | struct option opts[] = { | |
554 | OPT_GROUP(""), | |
555 | OPT_STRING(0, "format", &format, N_("fmt"), N_("archive format")), | |
556 | OPT_STRING(0, "prefix", &base, N_("prefix"), | |
557 | N_("prepend prefix to each pathname in the archive")), | |
558 | { OPTION_CALLBACK, 0, "add-file", args, N_("file"), | |
559 | N_("add untracked file to archive"), 0, add_file_cb, | |
560 | (intptr_t)&base }, | |
561 | OPT_STRING('o', "output", &output, N_("file"), | |
562 | N_("write the archive to this file")), | |
563 | OPT_BOOL(0, "worktree-attributes", &worktree_attributes, | |
564 | N_("read .gitattributes in working directory")), | |
565 | OPT__VERBOSE(&verbose, N_("report archived files on stderr")), | |
566 | OPT_NUMBER_CALLBACK(&compression_level, | |
567 | N_("set compression level"), number_callback), | |
568 | OPT_GROUP(""), | |
569 | OPT_BOOL('l', "list", &list, | |
570 | N_("list supported archive formats")), | |
571 | OPT_GROUP(""), | |
572 | OPT_STRING(0, "remote", &remote, N_("repo"), | |
573 | N_("retrieve the archive from remote repository <repo>")), | |
574 | OPT_STRING(0, "exec", &exec, N_("command"), | |
575 | N_("path to the remote git-upload-archive command")), | |
576 | OPT_END() | |
577 | }; | |
578 | ||
579 | argc = parse_options(argc, argv, NULL, opts, archive_usage, 0); | |
580 | ||
581 | if (remote) | |
582 | die(_("Unexpected option --remote")); | |
583 | if (exec) | |
584 | die(_("Option --exec can only be used together with --remote")); | |
585 | if (output) | |
586 | die(_("Unexpected option --output")); | |
587 | if (is_remote && args->extra_files.nr) | |
588 | die(_("Options --add-file and --remote cannot be used together")); | |
589 | ||
590 | if (!base) | |
591 | base = ""; | |
592 | ||
593 | if (list) { | |
594 | for (i = 0; i < nr_archivers; i++) | |
595 | if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE) | |
596 | printf("%s\n", archivers[i]->name); | |
597 | exit(0); | |
598 | } | |
599 | ||
600 | if (!format && name_hint) | |
601 | format = archive_format_from_filename(name_hint); | |
602 | if (!format) | |
603 | format = "tar"; | |
604 | ||
605 | /* We need at least one parameter -- tree-ish */ | |
606 | if (argc < 1) | |
607 | usage_with_options(archive_usage, opts); | |
608 | *ar = lookup_archiver(format); | |
609 | if (!*ar || (is_remote && !((*ar)->flags & ARCHIVER_REMOTE))) | |
610 | die(_("Unknown archive format '%s'"), format); | |
611 | ||
612 | args->compression_level = Z_DEFAULT_COMPRESSION; | |
613 | if (compression_level != -1) { | |
614 | int levels_ok = (*ar)->flags & ARCHIVER_WANT_COMPRESSION_LEVELS; | |
615 | int high_ok = (*ar)->flags & ARCHIVER_HIGH_COMPRESSION_LEVELS; | |
616 | if (levels_ok && (compression_level <= 9 || high_ok)) | |
617 | args->compression_level = compression_level; | |
618 | else { | |
619 | die(_("Argument not supported for format '%s': -%d"), | |
620 | format, compression_level); | |
621 | } | |
622 | } | |
623 | args->verbose = verbose; | |
624 | args->base = base; | |
625 | args->baselen = strlen(base); | |
626 | args->worktree_attributes = worktree_attributes; | |
627 | ||
628 | return argc; | |
629 | } | |
630 | ||
631 | int write_archive(int argc, const char **argv, const char *prefix, | |
632 | struct repository *repo, | |
633 | const char *name_hint, int remote) | |
634 | { | |
635 | const struct archiver *ar = NULL; | |
636 | struct archiver_args args; | |
637 | int rc; | |
638 | ||
639 | git_config_get_bool("uploadarchive.allowunreachable", &remote_allow_unreachable); | |
640 | git_config(git_default_config, NULL); | |
641 | ||
642 | args.repo = repo; | |
643 | args.prefix = prefix; | |
644 | string_list_init(&args.extra_files, 1); | |
645 | argc = parse_archive_args(argc, argv, &ar, &args, name_hint, remote); | |
646 | if (!startup_info->have_repository) { | |
647 | /* | |
648 | * We know this will die() with an error, so we could just | |
649 | * die ourselves; but its error message will be more specific | |
650 | * than what we could write here. | |
651 | */ | |
652 | setup_git_directory(); | |
653 | } | |
654 | ||
655 | parse_treeish_arg(argv, &args, prefix, remote); | |
656 | parse_pathspec_arg(argv + 1, &args); | |
657 | ||
658 | rc = ar->write_archive(ar, &args); | |
659 | ||
660 | string_list_clear_func(&args.extra_files, extra_file_info_clear); | |
661 | free(args.refname); | |
662 | ||
663 | return rc; | |
664 | } | |
665 | ||
666 | static int match_extension(const char *filename, const char *ext) | |
667 | { | |
668 | int prefixlen = strlen(filename) - strlen(ext); | |
669 | ||
670 | /* | |
671 | * We need 1 character for the '.', and 1 character to ensure that the | |
672 | * prefix is non-empty (k.e., we don't match .tar.gz with no actual | |
673 | * filename). | |
674 | */ | |
675 | if (prefixlen < 2 || filename[prefixlen - 1] != '.') | |
676 | return 0; | |
677 | return !strcmp(filename + prefixlen, ext); | |
678 | } | |
679 | ||
680 | const char *archive_format_from_filename(const char *filename) | |
681 | { | |
682 | int i; | |
683 | ||
684 | for (i = 0; i < nr_archivers; i++) | |
685 | if (match_extension(filename, archivers[i]->name)) | |
686 | return archivers[i]->name; | |
687 | return NULL; | |
688 | } |