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Commit | Line | Data |
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18125644 LH |
1 | #include "cache.h" |
2 | #include "commit.h" | |
c0885435 | 3 | #include "tree-walk.h" |
18125644 | 4 | #include "attr.h" |
562e25ab | 5 | #include "archive.h" |
4fac1d3a | 6 | #include "parse-options.h" |
ba053ea9 | 7 | #include "unpack-trees.h" |
ed22b417 | 8 | #include "dir.h" |
4fac1d3a RS |
9 | |
10 | static char const * const archive_usage[] = { | |
0012a387 NTND |
11 | N_("git archive [options] <tree-ish> [<path>...]"), |
12 | N_("git archive --list"), | |
13 | N_("git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [<path>...]"), | |
14 | N_("git archive --remote <repo> [--exec <cmd>] --list"), | |
4fac1d3a RS |
15 | NULL |
16 | }; | |
c0885435 | 17 | |
13e0f88d JK |
18 | static const struct archiver **archivers; |
19 | static int nr_archivers; | |
20 | static int alloc_archivers; | |
7671b632 | 21 | static int remote_allow_unreachable; |
13e0f88d JK |
22 | |
23 | void register_archiver(struct archiver *ar) | |
24 | { | |
25 | ALLOC_GROW(archivers, nr_archivers + 1, alloc_archivers); | |
26 | archivers[nr_archivers++] = ar; | |
27 | } | |
c0885435 | 28 | |
18125644 LH |
29 | static void format_subst(const struct commit *commit, |
30 | const char *src, size_t len, | |
31 | struct strbuf *buf) | |
32 | { | |
33 | char *to_free = NULL; | |
f285a2d7 | 34 | struct strbuf fmt = STRBUF_INIT; |
dd2e794a TR |
35 | struct pretty_print_context ctx = {0}; |
36 | ctx.date_mode = DATE_NORMAL; | |
35039ced | 37 | ctx.abbrev = DEFAULT_ABBREV; |
18125644 LH |
38 | |
39 | if (src == buf->buf) | |
40 | to_free = strbuf_detach(buf, NULL); | |
18125644 LH |
41 | for (;;) { |
42 | const char *b, *c; | |
43 | ||
44 | b = memmem(src, len, "$Format:", 8); | |
75b7dfbd | 45 | if (!b) |
18125644 | 46 | break; |
75b7dfbd | 47 | c = memchr(b + 8, '$', (src + len) - b - 8); |
18125644 LH |
48 | if (!c) |
49 | break; | |
50 | ||
51 | strbuf_reset(&fmt); | |
52 | strbuf_add(&fmt, b + 8, c - b - 8); | |
53 | ||
54 | strbuf_add(buf, src, b - src); | |
dd2e794a | 55 | format_commit_message(commit, fmt.buf, buf, &ctx); |
18125644 LH |
56 | len -= c + 1 - src; |
57 | src = c + 1; | |
58 | } | |
59 | strbuf_add(buf, src, len); | |
60 | strbuf_release(&fmt); | |
61 | free(to_free); | |
62 | } | |
63 | ||
9cb513b7 NTND |
64 | void *sha1_file_to_archive(const struct archiver_args *args, |
65 | const char *path, const unsigned char *sha1, | |
66 | unsigned int mode, enum object_type *type, | |
67 | unsigned long *sizep) | |
18125644 LH |
68 | { |
69 | void *buffer; | |
9cb513b7 | 70 | const struct commit *commit = args->convert ? args->commit : NULL; |
18125644 | 71 | |
9cb513b7 | 72 | path += args->baselen; |
18125644 LH |
73 | buffer = read_sha1_file(sha1, type, sizep); |
74 | if (buffer && S_ISREG(mode)) { | |
f285a2d7 | 75 | struct strbuf buf = STRBUF_INIT; |
18125644 LH |
76 | size_t size = 0; |
77 | ||
18125644 LH |
78 | strbuf_attach(&buf, buffer, *sizep, *sizep + 1); |
79 | convert_to_working_tree(path, buf.buf, buf.len, &buf); | |
1d11d5bb RS |
80 | if (commit) |
81 | format_subst(commit, buf.buf, buf.len, &buf); | |
18125644 LH |
82 | buffer = strbuf_detach(&buf, &size); |
83 | *sizep = size; | |
84 | } | |
85 | ||
86 | return buffer; | |
87 | } | |
88 | ||
1d11d5bb | 89 | static void setup_archive_check(struct git_attr_check *check) |
008d896d RS |
90 | { |
91 | static struct git_attr *attr_export_ignore; | |
1d11d5bb | 92 | static struct git_attr *attr_export_subst; |
008d896d | 93 | |
1d11d5bb | 94 | if (!attr_export_ignore) { |
7fb0eaa2 JH |
95 | attr_export_ignore = git_attr("export-ignore"); |
96 | attr_export_subst = git_attr("export-subst"); | |
1d11d5bb | 97 | } |
008d896d | 98 | check[0].attr = attr_export_ignore; |
1d11d5bb | 99 | check[1].attr = attr_export_subst; |
008d896d | 100 | } |
562e25ab | 101 | |
ed22b417 NTND |
102 | struct directory { |
103 | struct directory *up; | |
104 | unsigned char sha1[20]; | |
105 | int baselen, len; | |
106 | unsigned mode; | |
107 | int stage; | |
108 | char path[FLEX_ARRAY]; | |
109 | }; | |
110 | ||
562e25ab RS |
111 | struct archiver_context { |
112 | struct archiver_args *args; | |
113 | write_archive_entry_fn_t write_entry; | |
ed22b417 | 114 | struct directory *bottom; |
562e25ab RS |
115 | }; |
116 | ||
117 | static int write_archive_entry(const unsigned char *sha1, const char *base, | |
118 | int baselen, const char *filename, unsigned mode, int stage, | |
119 | void *context) | |
120 | { | |
121 | static struct strbuf path = STRBUF_INIT; | |
122 | struct archiver_context *c = context; | |
123 | struct archiver_args *args = c->args; | |
124 | write_archive_entry_fn_t write_entry = c->write_entry; | |
1d11d5bb RS |
125 | struct git_attr_check check[2]; |
126 | const char *path_without_prefix; | |
562e25ab | 127 | int err; |
562e25ab | 128 | |
9cb513b7 | 129 | args->convert = 0; |
562e25ab RS |
130 | strbuf_reset(&path); |
131 | strbuf_grow(&path, PATH_MAX); | |
ebfbdb34 | 132 | strbuf_add(&path, args->base, args->baselen); |
562e25ab RS |
133 | strbuf_add(&path, base, baselen); |
134 | strbuf_addstr(&path, filename); | |
94bc671a JNA |
135 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) |
136 | strbuf_addch(&path, '/'); | |
1d11d5bb | 137 | path_without_prefix = path.buf + args->baselen; |
562e25ab | 138 | |
1d11d5bb | 139 | setup_archive_check(check); |
d932f4eb | 140 | if (!git_check_attr(path_without_prefix, ARRAY_SIZE(check), check)) { |
1d11d5bb RS |
141 | if (ATTR_TRUE(check[0].value)) |
142 | return 0; | |
9cb513b7 | 143 | args->convert = ATTR_TRUE(check[1].value); |
1d11d5bb | 144 | } |
562e25ab RS |
145 | |
146 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) { | |
562e25ab RS |
147 | if (args->verbose) |
148 | fprintf(stderr, "%.*s\n", (int)path.len, path.buf); | |
9cb513b7 | 149 | err = write_entry(args, sha1, path.buf, path.len, mode); |
562e25ab RS |
150 | if (err) |
151 | return err; | |
d3bee161 | 152 | return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0); |
562e25ab RS |
153 | } |
154 | ||
562e25ab RS |
155 | if (args->verbose) |
156 | fprintf(stderr, "%.*s\n", (int)path.len, path.buf); | |
9cb513b7 | 157 | return write_entry(args, sha1, path.buf, path.len, mode); |
562e25ab RS |
158 | } |
159 | ||
ed22b417 NTND |
160 | static void queue_directory(const unsigned char *sha1, |
161 | const char *base, int baselen, const char *filename, | |
162 | unsigned mode, int stage, struct archiver_context *c) | |
163 | { | |
164 | struct directory *d; | |
165 | d = xmallocz(sizeof(*d) + baselen + 1 + strlen(filename)); | |
166 | d->up = c->bottom; | |
167 | d->baselen = baselen; | |
168 | d->mode = mode; | |
169 | d->stage = stage; | |
170 | c->bottom = d; | |
171 | d->len = sprintf(d->path, "%.*s%s/", baselen, base, filename); | |
172 | hashcpy(d->sha1, sha1); | |
173 | } | |
174 | ||
175 | static int write_directory(struct archiver_context *c) | |
176 | { | |
177 | struct directory *d = c->bottom; | |
178 | int ret; | |
179 | ||
180 | if (!d) | |
181 | return 0; | |
182 | c->bottom = d->up; | |
183 | d->path[d->len - 1] = '\0'; /* no trailing slash */ | |
184 | ret = | |
185 | write_directory(c) || | |
186 | write_archive_entry(d->sha1, d->path, d->baselen, | |
187 | d->path + d->baselen, d->mode, | |
188 | d->stage, c) != READ_TREE_RECURSIVE; | |
189 | free(d); | |
190 | return ret ? -1 : 0; | |
191 | } | |
192 | ||
193 | static int queue_or_write_archive_entry(const unsigned char *sha1, | |
194 | const char *base, int baselen, const char *filename, | |
195 | unsigned mode, int stage, void *context) | |
196 | { | |
197 | struct archiver_context *c = context; | |
198 | ||
199 | while (c->bottom && | |
200 | !(baselen >= c->bottom->len && | |
201 | !strncmp(base, c->bottom->path, c->bottom->len))) { | |
202 | struct directory *next = c->bottom->up; | |
203 | free(c->bottom); | |
204 | c->bottom = next; | |
205 | } | |
206 | ||
207 | if (S_ISDIR(mode)) { | |
208 | queue_directory(sha1, base, baselen, filename, | |
209 | mode, stage, c); | |
210 | return READ_TREE_RECURSIVE; | |
211 | } | |
212 | ||
213 | if (write_directory(c)) | |
214 | return -1; | |
215 | return write_archive_entry(sha1, base, baselen, filename, mode, | |
216 | stage, context); | |
217 | } | |
218 | ||
562e25ab RS |
219 | int write_archive_entries(struct archiver_args *args, |
220 | write_archive_entry_fn_t write_entry) | |
221 | { | |
222 | struct archiver_context context; | |
ba053ea9 NTND |
223 | struct unpack_trees_options opts; |
224 | struct tree_desc t; | |
562e25ab RS |
225 | int err; |
226 | ||
227 | if (args->baselen > 0 && args->base[args->baselen - 1] == '/') { | |
228 | size_t len = args->baselen; | |
229 | ||
230 | while (len > 1 && args->base[len - 2] == '/') | |
231 | len--; | |
232 | if (args->verbose) | |
233 | fprintf(stderr, "%.*s\n", (int)len, args->base); | |
234 | err = write_entry(args, args->tree->object.sha1, args->base, | |
9cb513b7 | 235 | len, 040777); |
562e25ab RS |
236 | if (err) |
237 | return err; | |
238 | } | |
239 | ||
ed22b417 | 240 | memset(&context, 0, sizeof(context)); |
562e25ab RS |
241 | context.args = args; |
242 | context.write_entry = write_entry; | |
243 | ||
ba053ea9 NTND |
244 | /* |
245 | * Setup index and instruct attr to read index only | |
246 | */ | |
247 | if (!args->worktree_attributes) { | |
248 | memset(&opts, 0, sizeof(opts)); | |
249 | opts.index_only = 1; | |
250 | opts.head_idx = -1; | |
251 | opts.src_index = &the_index; | |
252 | opts.dst_index = &the_index; | |
253 | opts.fn = oneway_merge; | |
254 | init_tree_desc(&t, args->tree->buffer, args->tree->size); | |
255 | if (unpack_trees(1, &t, &opts)) | |
256 | return -1; | |
257 | git_attr_set_direction(GIT_ATTR_INDEX, &the_index); | |
258 | } | |
259 | ||
f3e743a0 | 260 | err = read_tree_recursive(args->tree, "", 0, 0, &args->pathspec, |
ed22b417 NTND |
261 | args->pathspec.has_wildcard ? |
262 | queue_or_write_archive_entry : | |
263 | write_archive_entry, | |
264 | &context); | |
562e25ab RS |
265 | if (err == READ_TREE_RECURSIVE) |
266 | err = 0; | |
ed22b417 NTND |
267 | while (context.bottom) { |
268 | struct directory *next = context.bottom->up; | |
269 | free(context.bottom); | |
270 | context.bottom = next; | |
271 | } | |
562e25ab RS |
272 | return err; |
273 | } | |
6e94e683 | 274 | |
c0885435 RS |
275 | static const struct archiver *lookup_archiver(const char *name) |
276 | { | |
277 | int i; | |
278 | ||
4fac1d3a RS |
279 | if (!name) |
280 | return NULL; | |
281 | ||
13e0f88d JK |
282 | for (i = 0; i < nr_archivers; i++) { |
283 | if (!strcmp(name, archivers[i]->name)) | |
284 | return archivers[i]; | |
c0885435 RS |
285 | } |
286 | return NULL; | |
287 | } | |
288 | ||
d5f53d6d RS |
289 | static int reject_entry(const unsigned char *sha1, const char *base, |
290 | int baselen, const char *filename, unsigned mode, | |
291 | int stage, void *context) | |
292 | { | |
ed22b417 NTND |
293 | int ret = -1; |
294 | if (S_ISDIR(mode)) { | |
295 | struct strbuf sb = STRBUF_INIT; | |
296 | strbuf_addstr(&sb, base); | |
297 | strbuf_addstr(&sb, filename); | |
298 | if (!match_pathspec(context, sb.buf, sb.len, 0, NULL, 1)) | |
299 | ret = READ_TREE_RECURSIVE; | |
300 | strbuf_release(&sb); | |
301 | } | |
302 | return ret; | |
d5f53d6d RS |
303 | } |
304 | ||
305 | static int path_exists(struct tree *tree, const char *path) | |
306 | { | |
f0096c06 NTND |
307 | const char *paths[] = { path, NULL }; |
308 | struct pathspec pathspec; | |
309 | int ret; | |
310 | ||
f3e743a0 | 311 | parse_pathspec(&pathspec, 0, 0, "", paths); |
ed22b417 NTND |
312 | pathspec.recursive = 1; |
313 | ret = read_tree_recursive(tree, "", 0, 0, &pathspec, | |
314 | reject_entry, &pathspec); | |
f0096c06 NTND |
315 | free_pathspec(&pathspec); |
316 | return ret != 0; | |
d5f53d6d RS |
317 | } |
318 | ||
c0885435 RS |
319 | static void parse_pathspec_arg(const char **pathspec, |
320 | struct archiver_args *ar_args) | |
321 | { | |
f3e743a0 NTND |
322 | /* |
323 | * must be consistent with parse_pathspec in path_exists() | |
324 | * Also if pathspec patterns are dependent, we're in big | |
325 | * trouble as we test each one separately | |
326 | */ | |
327 | parse_pathspec(&ar_args->pathspec, 0, | |
328 | PATHSPEC_PREFER_FULL, | |
329 | "", pathspec); | |
ed22b417 | 330 | ar_args->pathspec.recursive = 1; |
d5f53d6d RS |
331 | if (pathspec) { |
332 | while (*pathspec) { | |
bd54cf17 | 333 | if (**pathspec && !path_exists(ar_args->tree, *pathspec)) |
f3e743a0 | 334 | die(_("pathspec '%s' did not match any files"), *pathspec); |
d5f53d6d RS |
335 | pathspec++; |
336 | } | |
337 | } | |
c0885435 RS |
338 | } |
339 | ||
340 | static void parse_treeish_arg(const char **argv, | |
ee27ca4a JK |
341 | struct archiver_args *ar_args, const char *prefix, |
342 | int remote) | |
c0885435 RS |
343 | { |
344 | const char *name = argv[0]; | |
345 | const unsigned char *commit_sha1; | |
346 | time_t archive_time; | |
347 | struct tree *tree; | |
348 | const struct commit *commit; | |
349 | unsigned char sha1[20]; | |
350 | ||
ee27ca4a | 351 | /* Remotes are only allowed to fetch actual refs */ |
7671b632 | 352 | if (remote && !remote_allow_unreachable) { |
ee27ca4a | 353 | char *ref = NULL; |
2c5495f7 RM |
354 | const char *colon = strchrnul(name, ':'); |
355 | int refnamelen = colon - name; | |
c51a351a RS |
356 | |
357 | if (!dwim_ref(name, refnamelen, sha1, &ref)) | |
358 | die("no such ref: %.*s", refnamelen, name); | |
ee27ca4a JK |
359 | free(ref); |
360 | } | |
0f544ee8 CMN |
361 | |
362 | if (get_sha1(name, sha1)) | |
363 | die("Not a valid object name"); | |
c0885435 RS |
364 | |
365 | commit = lookup_commit_reference_gently(sha1, 1); | |
366 | if (commit) { | |
367 | commit_sha1 = commit->object.sha1; | |
368 | archive_time = commit->date; | |
369 | } else { | |
370 | commit_sha1 = NULL; | |
371 | archive_time = time(NULL); | |
372 | } | |
373 | ||
374 | tree = parse_tree_indirect(sha1); | |
375 | if (tree == NULL) | |
376 | die("not a tree object"); | |
377 | ||
378 | if (prefix) { | |
379 | unsigned char tree_sha1[20]; | |
380 | unsigned int mode; | |
381 | int err; | |
382 | ||
383 | err = get_tree_entry(tree->object.sha1, prefix, | |
384 | tree_sha1, &mode); | |
385 | if (err || !S_ISDIR(mode)) | |
386 | die("current working directory is untracked"); | |
387 | ||
388 | tree = parse_tree_indirect(tree_sha1); | |
389 | } | |
390 | ar_args->tree = tree; | |
391 | ar_args->commit_sha1 = commit_sha1; | |
392 | ar_args->commit = commit; | |
393 | ar_args->time = archive_time; | |
394 | } | |
395 | ||
4fac1d3a RS |
396 | #define OPT__COMPR(s, v, h, p) \ |
397 | { OPTION_SET_INT, (s), NULL, (v), NULL, (h), \ | |
398 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, (p) } | |
399 | #define OPT__COMPR_HIDDEN(s, v, p) \ | |
400 | { OPTION_SET_INT, (s), NULL, (v), NULL, "", \ | |
401 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) } | |
402 | ||
c0885435 | 403 | static int parse_archive_args(int argc, const char **argv, |
56baa61d | 404 | const struct archiver **ar, struct archiver_args *args, |
7b97730b | 405 | const char *name_hint, int is_remote) |
c0885435 | 406 | { |
56baa61d | 407 | const char *format = NULL; |
4fac1d3a RS |
408 | const char *base = NULL; |
409 | const char *remote = NULL; | |
410 | const char *exec = NULL; | |
aec0c1bb | 411 | const char *output = NULL; |
c0885435 RS |
412 | int compression_level = -1; |
413 | int verbose = 0; | |
414 | int i; | |
4fac1d3a | 415 | int list = 0; |
ba053ea9 | 416 | int worktree_attributes = 0; |
4fac1d3a RS |
417 | struct option opts[] = { |
418 | OPT_GROUP(""), | |
0012a387 NTND |
419 | OPT_STRING(0, "format", &format, N_("fmt"), N_("archive format")), |
420 | OPT_STRING(0, "prefix", &base, N_("prefix"), | |
421 | N_("prepend prefix to each pathname in the archive")), | |
422 | OPT_STRING('o', "output", &output, N_("file"), | |
423 | N_("write the archive to this file")), | |
f858c646 | 424 | OPT_BOOL(0, "worktree-attributes", &worktree_attributes, |
0012a387 NTND |
425 | N_("read .gitattributes in working directory")), |
426 | OPT__VERBOSE(&verbose, N_("report archived files on stderr")), | |
427 | OPT__COMPR('0', &compression_level, N_("store only"), 0), | |
428 | OPT__COMPR('1', &compression_level, N_("compress faster"), 1), | |
4fac1d3a RS |
429 | OPT__COMPR_HIDDEN('2', &compression_level, 2), |
430 | OPT__COMPR_HIDDEN('3', &compression_level, 3), | |
431 | OPT__COMPR_HIDDEN('4', &compression_level, 4), | |
432 | OPT__COMPR_HIDDEN('5', &compression_level, 5), | |
433 | OPT__COMPR_HIDDEN('6', &compression_level, 6), | |
434 | OPT__COMPR_HIDDEN('7', &compression_level, 7), | |
435 | OPT__COMPR_HIDDEN('8', &compression_level, 8), | |
0012a387 | 436 | OPT__COMPR('9', &compression_level, N_("compress better"), 9), |
4fac1d3a | 437 | OPT_GROUP(""), |
f858c646 | 438 | OPT_BOOL('l', "list", &list, |
0012a387 | 439 | N_("list supported archive formats")), |
4fac1d3a | 440 | OPT_GROUP(""), |
0012a387 NTND |
441 | OPT_STRING(0, "remote", &remote, N_("repo"), |
442 | N_("retrieve the archive from remote repository <repo>")), | |
b0ff9654 | 443 | OPT_STRING(0, "exec", &exec, N_("command"), |
0012a387 | 444 | N_("path to the remote git-upload-archive command")), |
4fac1d3a RS |
445 | OPT_END() |
446 | }; | |
447 | ||
37782920 | 448 | argc = parse_options(argc, argv, NULL, opts, archive_usage, 0); |
4fac1d3a RS |
449 | |
450 | if (remote) | |
451 | die("Unexpected option --remote"); | |
452 | if (exec) | |
453 | die("Option --exec can only be used together with --remote"); | |
52e77876 RS |
454 | if (output) |
455 | die("Unexpected option --output"); | |
4fac1d3a RS |
456 | |
457 | if (!base) | |
458 | base = ""; | |
459 | ||
460 | if (list) { | |
13e0f88d | 461 | for (i = 0; i < nr_archivers; i++) |
7b97730b JK |
462 | if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE) |
463 | printf("%s\n", archivers[i]->name); | |
4fac1d3a | 464 | exit(0); |
c0885435 RS |
465 | } |
466 | ||
56baa61d JK |
467 | if (!format && name_hint) |
468 | format = archive_format_from_filename(name_hint); | |
469 | if (!format) | |
470 | format = "tar"; | |
471 | ||
c0885435 | 472 | /* We need at least one parameter -- tree-ish */ |
4fac1d3a RS |
473 | if (argc < 1) |
474 | usage_with_options(archive_usage, opts); | |
c0885435 | 475 | *ar = lookup_archiver(format); |
7b97730b | 476 | if (!*ar || (is_remote && !((*ar)->flags & ARCHIVER_REMOTE))) |
c0885435 RS |
477 | die("Unknown archive format '%s'", format); |
478 | ||
479 | args->compression_level = Z_DEFAULT_COMPRESSION; | |
480 | if (compression_level != -1) { | |
13e0f88d | 481 | if ((*ar)->flags & ARCHIVER_WANT_COMPRESSION_LEVELS) |
c0885435 RS |
482 | args->compression_level = compression_level; |
483 | else { | |
484 | die("Argument not supported for format '%s': -%d", | |
485 | format, compression_level); | |
486 | } | |
487 | } | |
488 | args->verbose = verbose; | |
489 | args->base = base; | |
490 | args->baselen = strlen(base); | |
ba053ea9 | 491 | args->worktree_attributes = worktree_attributes; |
c0885435 | 492 | |
4fac1d3a | 493 | return argc; |
c0885435 RS |
494 | } |
495 | ||
6e94e683 | 496 | int write_archive(int argc, const char **argv, const char *prefix, |
7b97730b | 497 | int setup_prefix, const char *name_hint, int remote) |
6e94e683 | 498 | { |
23212862 | 499 | int nongit = 0; |
6e94e683 RS |
500 | const struct archiver *ar = NULL; |
501 | struct archiver_args args; | |
6e94e683 | 502 | |
6e94e683 | 503 | if (setup_prefix && prefix == NULL) |
23212862 JK |
504 | prefix = setup_git_directory_gently(&nongit); |
505 | ||
95790ff6 TA |
506 | git_config_get_bool("uploadarchive.allowunreachable", &remote_allow_unreachable); |
507 | git_config(git_default_config, NULL); | |
508 | ||
13e0f88d JK |
509 | init_tar_archiver(); |
510 | init_zip_archiver(); | |
23212862 | 511 | |
7b97730b | 512 | argc = parse_archive_args(argc, argv, &ar, &args, name_hint, remote); |
23212862 JK |
513 | if (nongit) { |
514 | /* | |
515 | * We know this will die() with an error, so we could just | |
516 | * die ourselves; but its error message will be more specific | |
517 | * than what we could write here. | |
518 | */ | |
519 | setup_git_directory(); | |
520 | } | |
6e94e683 | 521 | |
ee27ca4a | 522 | parse_treeish_arg(argv, &args, prefix, remote); |
6e94e683 RS |
523 | parse_pathspec_arg(argv + 1, &args); |
524 | ||
4d7c9898 | 525 | return ar->write_archive(ar, &args); |
6e94e683 | 526 | } |
56baa61d | 527 | |
08716b3c JK |
528 | static int match_extension(const char *filename, const char *ext) |
529 | { | |
530 | int prefixlen = strlen(filename) - strlen(ext); | |
531 | ||
532 | /* | |
533 | * We need 1 character for the '.', and 1 character to ensure that the | |
534 | * prefix is non-empty (k.e., we don't match .tar.gz with no actual | |
535 | * filename). | |
536 | */ | |
b1cdfb54 | 537 | if (prefixlen < 2 || filename[prefixlen - 1] != '.') |
08716b3c JK |
538 | return 0; |
539 | return !strcmp(filename + prefixlen, ext); | |
540 | } | |
541 | ||
56baa61d JK |
542 | const char *archive_format_from_filename(const char *filename) |
543 | { | |
08716b3c JK |
544 | int i; |
545 | ||
546 | for (i = 0; i < nr_archivers; i++) | |
547 | if (match_extension(filename, archivers[i]->name)) | |
548 | return archivers[i]->name; | |
56baa61d JK |
549 | return NULL; |
550 | } |