8 #include "parse-options.h"
9 #include "unpack-trees.h"
12 static char const * const archive_usage[] = {
13 N_("git archive [<options>] <tree-ish> [<path>...]"),
14 N_("git archive --list"),
15 N_("git archive --remote <repo> [--exec <cmd>] [<options>] <tree-ish> [<path>...]"),
16 N_("git archive --remote <repo> [--exec <cmd>] --list"),
20 static const struct archiver **archivers;
21 static int nr_archivers;
22 static int alloc_archivers;
23 static int remote_allow_unreachable;
25 void register_archiver(struct archiver *ar)
27 ALLOC_GROW(archivers, nr_archivers + 1, alloc_archivers);
28 archivers[nr_archivers++] = ar;
31 static void format_subst(const struct commit *commit,
32 const char *src, size_t len,
36 struct strbuf fmt = STRBUF_INIT;
37 struct pretty_print_context ctx = {0};
38 ctx.date_mode.type = DATE_NORMAL;
39 ctx.abbrev = DEFAULT_ABBREV;
42 to_free = strbuf_detach(buf, NULL);
46 b = memmem(src, len, "$Format:", 8);
49 c = memchr(b + 8, '$', (src + len) - b - 8);
54 strbuf_add(&fmt, b + 8, c - b - 8);
56 strbuf_add(buf, src, b - src);
57 format_commit_message(commit, fmt.buf, buf, &ctx);
61 strbuf_add(buf, src, len);
66 void *sha1_file_to_archive(const struct archiver_args *args,
67 const char *path, const unsigned char *sha1,
68 unsigned int mode, enum object_type *type,
72 const struct commit *commit = args->convert ? args->commit : NULL;
74 path += args->baselen;
75 buffer = read_sha1_file(sha1, type, sizep);
76 if (buffer && S_ISREG(mode)) {
77 struct strbuf buf = STRBUF_INIT;
80 strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
81 convert_to_working_tree(path, buf.buf, buf.len, &buf);
83 format_subst(commit, buf.buf, buf.len, &buf);
84 buffer = strbuf_detach(&buf, &size);
97 char path[FLEX_ARRAY];
100 struct archiver_context {
101 struct archiver_args *args;
102 write_archive_entry_fn_t write_entry;
103 struct directory *bottom;
106 static const struct attr_check *get_archive_attrs(const char *path)
108 static struct attr_check *check;
110 check = attr_check_initl("export-ignore", "export-subst", NULL);
111 return git_check_attr(path, check) ? NULL : check;
114 static int check_attr_export_ignore(const struct attr_check *check)
116 return check && ATTR_TRUE(check->items[0].value);
119 static int check_attr_export_subst(const struct attr_check *check)
121 return check && ATTR_TRUE(check->items[1].value);
124 static int write_archive_entry(const unsigned char *sha1, const char *base,
125 int baselen, const char *filename, unsigned mode, int stage,
128 static struct strbuf path = STRBUF_INIT;
129 const struct attr_check *check;
130 struct archiver_context *c = context;
131 struct archiver_args *args = c->args;
132 write_archive_entry_fn_t write_entry = c->write_entry;
133 const char *path_without_prefix;
138 strbuf_grow(&path, PATH_MAX);
139 strbuf_add(&path, args->base, args->baselen);
140 strbuf_add(&path, base, baselen);
141 strbuf_addstr(&path, filename);
142 if (S_ISDIR(mode) || S_ISGITLINK(mode))
143 strbuf_addch(&path, '/');
144 path_without_prefix = path.buf + args->baselen;
146 check = get_archive_attrs(path_without_prefix);
147 if (check_attr_export_ignore(check))
149 args->convert = check_attr_export_subst(check);
151 if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
153 fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
154 err = write_entry(args, sha1, path.buf, path.len, mode);
157 return (S_ISDIR(mode) ? READ_TREE_RECURSIVE : 0);
161 fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
162 return write_entry(args, sha1, path.buf, path.len, mode);
165 static int write_archive_entry_buf(const unsigned char *sha1, struct strbuf *base,
166 const char *filename, unsigned mode, int stage,
169 return write_archive_entry(sha1, base->buf, base->len,
170 filename, mode, stage, context);
173 static void queue_directory(const unsigned char *sha1,
174 struct strbuf *base, const char *filename,
175 unsigned mode, int stage, struct archiver_context *c)
178 size_t len = st_add4(base->len, 1, strlen(filename), 1);
179 d = xmalloc(st_add(sizeof(*d), len));
181 d->baselen = base->len;
185 d->len = xsnprintf(d->path, len, "%.*s%s/", (int)base->len, base->buf, filename);
186 hashcpy(d->oid.hash, sha1);
189 static int write_directory(struct archiver_context *c)
191 struct directory *d = c->bottom;
197 d->path[d->len - 1] = '\0'; /* no trailing slash */
199 write_directory(c) ||
200 write_archive_entry(d->oid.hash, d->path, d->baselen,
201 d->path + d->baselen, d->mode,
202 d->stage, c) != READ_TREE_RECURSIVE;
207 static int queue_or_write_archive_entry(const unsigned char *sha1,
208 struct strbuf *base, const char *filename,
209 unsigned mode, int stage, void *context)
211 struct archiver_context *c = context;
214 !(base->len >= c->bottom->len &&
215 !strncmp(base->buf, c->bottom->path, c->bottom->len))) {
216 struct directory *next = c->bottom->up;
222 queue_directory(sha1, base, filename,
224 return READ_TREE_RECURSIVE;
227 if (write_directory(c))
229 return write_archive_entry(sha1, base->buf, base->len, filename, mode,
233 int write_archive_entries(struct archiver_args *args,
234 write_archive_entry_fn_t write_entry)
236 struct archiver_context context;
237 struct unpack_trees_options opts;
241 if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
242 size_t len = args->baselen;
244 while (len > 1 && args->base[len - 2] == '/')
247 fprintf(stderr, "%.*s\n", (int)len, args->base);
248 err = write_entry(args, args->tree->object.oid.hash, args->base,
254 memset(&context, 0, sizeof(context));
256 context.write_entry = write_entry;
259 * Setup index and instruct attr to read index only
261 if (!args->worktree_attributes) {
262 memset(&opts, 0, sizeof(opts));
265 opts.src_index = &the_index;
266 opts.dst_index = &the_index;
267 opts.fn = oneway_merge;
268 init_tree_desc(&t, args->tree->buffer, args->tree->size);
269 if (unpack_trees(1, &t, &opts))
271 git_attr_set_direction(GIT_ATTR_INDEX, &the_index);
274 err = read_tree_recursive(args->tree, "", 0, 0, &args->pathspec,
275 args->pathspec.has_wildcard ?
276 queue_or_write_archive_entry :
277 write_archive_entry_buf,
279 if (err == READ_TREE_RECURSIVE)
281 while (context.bottom) {
282 struct directory *next = context.bottom->up;
283 free(context.bottom);
284 context.bottom = next;
289 static const struct archiver *lookup_archiver(const char *name)
296 for (i = 0; i < nr_archivers; i++) {
297 if (!strcmp(name, archivers[i]->name))
303 static int reject_entry(const unsigned char *sha1, struct strbuf *base,
304 const char *filename, unsigned mode,
305 int stage, void *context)
309 struct strbuf sb = STRBUF_INIT;
310 strbuf_addbuf(&sb, base);
311 strbuf_addstr(&sb, filename);
312 if (!match_pathspec(context, sb.buf, sb.len, 0, NULL, 1))
313 ret = READ_TREE_RECURSIVE;
319 static int path_exists(struct tree *tree, const char *path)
321 const char *paths[] = { path, NULL };
322 struct pathspec pathspec;
325 parse_pathspec(&pathspec, 0, 0, "", paths);
326 pathspec.recursive = 1;
327 ret = read_tree_recursive(tree, "", 0, 0, &pathspec,
328 reject_entry, &pathspec);
329 clear_pathspec(&pathspec);
333 static void parse_pathspec_arg(const char **pathspec,
334 struct archiver_args *ar_args)
337 * must be consistent with parse_pathspec in path_exists()
338 * Also if pathspec patterns are dependent, we're in big
339 * trouble as we test each one separately
341 parse_pathspec(&ar_args->pathspec, 0,
342 PATHSPEC_PREFER_FULL,
344 ar_args->pathspec.recursive = 1;
347 if (**pathspec && !path_exists(ar_args->tree, *pathspec))
348 die(_("pathspec '%s' did not match any files"), *pathspec);
354 static void parse_treeish_arg(const char **argv,
355 struct archiver_args *ar_args, const char *prefix,
358 const char *name = argv[0];
359 const unsigned char *commit_sha1;
362 const struct commit *commit;
363 struct object_id oid;
365 /* Remotes are only allowed to fetch actual refs */
366 if (remote && !remote_allow_unreachable) {
368 const char *colon = strchrnul(name, ':');
369 int refnamelen = colon - name;
371 if (!dwim_ref(name, refnamelen, oid.hash, &ref))
372 die("no such ref: %.*s", refnamelen, name);
376 if (get_sha1(name, oid.hash))
377 die("Not a valid object name");
379 commit = lookup_commit_reference_gently(&oid, 1);
381 commit_sha1 = commit->object.oid.hash;
382 archive_time = commit->date;
385 archive_time = time(NULL);
388 tree = parse_tree_indirect(&oid);
390 die("not a tree object");
393 struct object_id tree_oid;
397 err = get_tree_entry(tree->object.oid.hash, prefix,
398 tree_oid.hash, &mode);
399 if (err || !S_ISDIR(mode))
400 die("current working directory is untracked");
402 tree = parse_tree_indirect(&tree_oid);
404 ar_args->tree = tree;
405 ar_args->commit_sha1 = commit_sha1;
406 ar_args->commit = commit;
407 ar_args->time = archive_time;
410 #define OPT__COMPR(s, v, h, p) \
411 { OPTION_SET_INT, (s), NULL, (v), NULL, (h), \
412 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, (p) }
413 #define OPT__COMPR_HIDDEN(s, v, p) \
414 { OPTION_SET_INT, (s), NULL, (v), NULL, "", \
415 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) }
417 static int parse_archive_args(int argc, const char **argv,
418 const struct archiver **ar, struct archiver_args *args,
419 const char *name_hint, int is_remote)
421 const char *format = NULL;
422 const char *base = NULL;
423 const char *remote = NULL;
424 const char *exec = NULL;
425 const char *output = NULL;
426 int compression_level = -1;
430 int worktree_attributes = 0;
431 struct option opts[] = {
433 OPT_STRING(0, "format", &format, N_("fmt"), N_("archive format")),
434 OPT_STRING(0, "prefix", &base, N_("prefix"),
435 N_("prepend prefix to each pathname in the archive")),
436 OPT_STRING('o', "output", &output, N_("file"),
437 N_("write the archive to this file")),
438 OPT_BOOL(0, "worktree-attributes", &worktree_attributes,
439 N_("read .gitattributes in working directory")),
440 OPT__VERBOSE(&verbose, N_("report archived files on stderr")),
441 OPT__COMPR('0', &compression_level, N_("store only"), 0),
442 OPT__COMPR('1', &compression_level, N_("compress faster"), 1),
443 OPT__COMPR_HIDDEN('2', &compression_level, 2),
444 OPT__COMPR_HIDDEN('3', &compression_level, 3),
445 OPT__COMPR_HIDDEN('4', &compression_level, 4),
446 OPT__COMPR_HIDDEN('5', &compression_level, 5),
447 OPT__COMPR_HIDDEN('6', &compression_level, 6),
448 OPT__COMPR_HIDDEN('7', &compression_level, 7),
449 OPT__COMPR_HIDDEN('8', &compression_level, 8),
450 OPT__COMPR('9', &compression_level, N_("compress better"), 9),
452 OPT_BOOL('l', "list", &list,
453 N_("list supported archive formats")),
455 OPT_STRING(0, "remote", &remote, N_("repo"),
456 N_("retrieve the archive from remote repository <repo>")),
457 OPT_STRING(0, "exec", &exec, N_("command"),
458 N_("path to the remote git-upload-archive command")),
462 argc = parse_options(argc, argv, NULL, opts, archive_usage, 0);
465 die(_("Unexpected option --remote"));
467 die(_("Option --exec can only be used together with --remote"));
469 die(_("Unexpected option --output"));
475 for (i = 0; i < nr_archivers; i++)
476 if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE)
477 printf("%s\n", archivers[i]->name);
481 if (!format && name_hint)
482 format = archive_format_from_filename(name_hint);
486 /* We need at least one parameter -- tree-ish */
488 usage_with_options(archive_usage, opts);
489 *ar = lookup_archiver(format);
490 if (!*ar || (is_remote && !((*ar)->flags & ARCHIVER_REMOTE)))
491 die(_("Unknown archive format '%s'"), format);
493 args->compression_level = Z_DEFAULT_COMPRESSION;
494 if (compression_level != -1) {
495 if ((*ar)->flags & ARCHIVER_WANT_COMPRESSION_LEVELS)
496 args->compression_level = compression_level;
498 die(_("Argument not supported for format '%s': -%d"),
499 format, compression_level);
502 args->verbose = verbose;
504 args->baselen = strlen(base);
505 args->worktree_attributes = worktree_attributes;
510 int write_archive(int argc, const char **argv, const char *prefix,
511 const char *name_hint, int remote)
513 const struct archiver *ar = NULL;
514 struct archiver_args args;
516 git_config_get_bool("uploadarchive.allowunreachable", &remote_allow_unreachable);
517 git_config(git_default_config, NULL);
522 argc = parse_archive_args(argc, argv, &ar, &args, name_hint, remote);
523 if (!startup_info->have_repository) {
525 * We know this will die() with an error, so we could just
526 * die ourselves; but its error message will be more specific
527 * than what we could write here.
529 setup_git_directory();
532 parse_treeish_arg(argv, &args, prefix, remote);
533 parse_pathspec_arg(argv + 1, &args);
535 return ar->write_archive(ar, &args);
538 static int match_extension(const char *filename, const char *ext)
540 int prefixlen = strlen(filename) - strlen(ext);
543 * We need 1 character for the '.', and 1 character to ensure that the
544 * prefix is non-empty (k.e., we don't match .tar.gz with no actual
547 if (prefixlen < 2 || filename[prefixlen - 1] != '.')
549 return !strcmp(filename + prefixlen, ext);
552 const char *archive_format_from_filename(const char *filename)
556 for (i = 0; i < nr_archivers; i++)
557 if (match_extension(filename, archivers[i]->name))
558 return archivers[i]->name;