2 * Copyright (c) 2006 Franck Bui-Huu
3 * Copyright (c) 2006 Rene Scharfe
15 static const char archive_usage[] = \
16 "git-archive --format=<fmt> [--prefix=<prefix>/] [--verbose] [<extra>] <tree-ish> [path...]";
18 static struct archiver_desc
21 write_archive_fn_t write_archive;
22 parse_extra_args_fn_t parse_extra;
24 { "tar", write_tar_archive, NULL },
25 { "zip", write_zip_archive, parse_extra_zip_args },
28 static int run_remote_archiver(const char *remote, int argc,
31 char *url, buf[LARGE_PACKET_MAX];
32 int fd[2], i, len, rv;
34 const char *exec = "git-upload-archive";
37 for (i = 1; i < argc; i++) {
38 const char *arg = argv[i];
39 if (!prefixcmp(arg, "--exec=")) {
41 die("multiple --exec specified");
48 url = xstrdup(remote);
49 pid = git_connect(fd, url, exec, 0);
53 for (i = 1; i < argc; i++) {
56 packet_write(fd[1], "argument %s\n", argv[i]);
60 len = packet_read_line(fd[0], buf, sizeof(buf));
62 die("git-archive: expected ACK/NAK, got EOF");
63 if (buf[len-1] == '\n')
65 if (strcmp(buf, "ACK")) {
66 if (len > 5 && !prefixcmp(buf, "NACK "))
67 die("git-archive: NACK %s", buf + 5);
68 die("git-archive: protocol error");
71 len = packet_read_line(fd[0], buf, sizeof(buf));
73 die("git-archive: expected a flush");
75 /* Now, start reading from fd[0] and spit it out to stdout */
76 rv = recv_sideband("archive", fd[0], 1, 2);
79 rv |= finish_connect(pid);
84 static void *format_subst(const struct commit *commit, const char *format,
87 unsigned long len = *sizep;
88 const char *a = format;
92 strbuf_init(&result, 0);
98 b = memmem(a, len, "$Format:", 8);
99 if (!b || a + len < b + 9)
101 c = memchr(b + 8, '$', len - 8);
106 strbuf_add(&fmt, b + 8, c - b - 8);
108 strbuf_add(&result, a, b - a);
109 format_commit_message(commit, fmt.buf, &result);
114 strbuf_add(&result, a, len);
118 strbuf_release(&fmt);
119 return strbuf_detach(&result);
122 static void *convert_to_archive(const char *path,
123 const void *src, unsigned long *sizep,
124 const struct commit *commit)
126 static struct git_attr *attr_export_subst;
127 struct git_attr_check check[1];
132 if (!attr_export_subst)
133 attr_export_subst = git_attr("export-subst", 12);
135 check[0].attr = attr_export_subst;
136 if (git_checkattr(path, ARRAY_SIZE(check), check))
138 if (!ATTR_TRUE(check[0].value))
141 return format_subst(commit, src, sizep);
144 void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
145 unsigned int mode, enum object_type *type,
147 const struct commit *commit)
149 void *buffer, *converted;
151 buffer = read_sha1_file(sha1, type, size);
152 if (buffer && S_ISREG(mode)) {
153 converted = convert_to_working_tree(path, buffer, size);
159 converted = convert_to_archive(path, buffer, size, commit);
169 static int init_archiver(const char *name, struct archiver *ar)
173 for (i = 0; i < ARRAY_SIZE(archivers); i++) {
174 if (!strcmp(name, archivers[i].name)) {
175 memset(ar, 0, sizeof(*ar));
176 ar->name = archivers[i].name;
177 ar->write_archive = archivers[i].write_archive;
178 ar->parse_extra = archivers[i].parse_extra;
186 void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args)
188 ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
191 void parse_treeish_arg(const char **argv, struct archiver_args *ar_args,
194 const char *name = argv[0];
195 const unsigned char *commit_sha1;
198 const struct commit *commit;
199 unsigned char sha1[20];
201 if (get_sha1(name, sha1))
202 die("Not a valid object name");
204 commit = lookup_commit_reference_gently(sha1, 1);
206 commit_sha1 = commit->object.sha1;
207 archive_time = commit->date;
210 archive_time = time(NULL);
213 tree = parse_tree_indirect(sha1);
215 die("not a tree object");
218 unsigned char tree_sha1[20];
222 err = get_tree_entry(tree->object.sha1, prefix,
224 if (err || !S_ISDIR(mode))
225 die("current working directory is untracked");
227 tree = parse_tree_indirect(tree_sha1);
229 ar_args->tree = tree;
230 ar_args->commit_sha1 = commit_sha1;
231 ar_args->commit = commit;
232 ar_args->time = archive_time;
235 int parse_archive_args(int argc, const char **argv, struct archiver *ar)
237 const char *extra_argv[MAX_EXTRA_ARGS];
239 const char *format = "tar";
240 const char *base = "";
244 for (i = 1; i < argc; i++) {
245 const char *arg = argv[i];
247 if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) {
248 for (i = 0; i < ARRAY_SIZE(archivers); i++)
249 printf("%s\n", archivers[i].name);
252 if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
256 if (!prefixcmp(arg, "--format=")) {
260 if (!prefixcmp(arg, "--prefix=")) {
264 if (!strcmp(arg, "--")) {
269 if (extra_argc > MAX_EXTRA_ARGS - 1)
270 die("Too many extra options");
271 extra_argv[extra_argc++] = arg;
277 /* We need at least one parameter -- tree-ish */
279 usage(archive_usage);
280 if (init_archiver(format, ar) < 0)
281 die("Unknown archive format '%s'", format);
284 if (!ar->parse_extra)
285 die("'%s' format does not handle %s",
286 ar->name, extra_argv[0]);
287 ar->args.extra = ar->parse_extra(extra_argc, extra_argv);
289 ar->args.verbose = verbose;
290 ar->args.base = base;
295 static const char *extract_remote_arg(int *ac, const char **av)
297 int ix, iy, cnt = *ac;
298 int no_more_options = 0;
299 const char *remote = NULL;
301 for (ix = iy = 1; ix < cnt; ix++) {
302 const char *arg = av[ix];
303 if (!strcmp(arg, "--"))
305 if (!no_more_options) {
306 if (!prefixcmp(arg, "--remote=")) {
308 die("Multiple --remote specified");
326 int cmd_archive(int argc, const char **argv, const char *prefix)
330 const char *remote = NULL;
332 remote = extract_remote_arg(&argc, argv);
334 return run_remote_archiver(remote, argc, argv);
336 setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
338 memset(&ar, 0, sizeof(ar));
339 tree_idx = parse_archive_args(argc, argv, &ar);
341 prefix = setup_git_directory();
344 parse_treeish_arg(argv, &ar.args, prefix);
345 parse_pathspec_arg(argv + 1, &ar.args);
347 return ar.write_archive(&ar.args);