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,
85 const char *src, size_t len,
92 to_free = strbuf_detach(buf, NULL);
97 b = memmem(src, len, "$Format:", 8);
98 if (!b || src + len < b + 9)
100 c = memchr(b + 8, '$', len - 8);
105 strbuf_add(&fmt, b + 8, c - b - 8);
107 strbuf_add(buf, src, b - src);
108 format_commit_message(commit, fmt.buf, buf);
112 strbuf_add(buf, src, len);
113 strbuf_release(&fmt);
117 static int convert_to_archive(const char *path,
118 const void *src, size_t len,
120 const struct commit *commit)
122 static struct git_attr *attr_export_subst;
123 struct git_attr_check check[1];
128 if (!attr_export_subst)
129 attr_export_subst = git_attr("export-subst", 12);
131 check[0].attr = attr_export_subst;
132 if (git_checkattr(path, ARRAY_SIZE(check), check))
134 if (!ATTR_TRUE(check[0].value))
137 format_subst(commit, src, len, buf);
141 void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
142 unsigned int mode, enum object_type *type,
143 unsigned long *sizep,
144 const struct commit *commit)
148 buffer = read_sha1_file(sha1, type, sizep);
149 if (buffer && S_ISREG(mode)) {
153 strbuf_init(&buf, 0);
154 strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
155 convert_to_working_tree(path, buf.buf, buf.len, &buf);
156 convert_to_archive(path, buf.buf, buf.len, &buf, commit);
157 buffer = strbuf_detach(&buf, &size);
164 static int init_archiver(const char *name, struct archiver *ar)
168 for (i = 0; i < ARRAY_SIZE(archivers); i++) {
169 if (!strcmp(name, archivers[i].name)) {
170 memset(ar, 0, sizeof(*ar));
171 ar->name = archivers[i].name;
172 ar->write_archive = archivers[i].write_archive;
173 ar->parse_extra = archivers[i].parse_extra;
181 void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args)
183 ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
186 void parse_treeish_arg(const char **argv, struct archiver_args *ar_args,
189 const char *name = argv[0];
190 const unsigned char *commit_sha1;
193 const struct commit *commit;
194 unsigned char sha1[20];
196 if (get_sha1(name, sha1))
197 die("Not a valid object name");
199 commit = lookup_commit_reference_gently(sha1, 1);
201 commit_sha1 = commit->object.sha1;
202 archive_time = commit->date;
205 archive_time = time(NULL);
208 tree = parse_tree_indirect(sha1);
210 die("not a tree object");
213 unsigned char tree_sha1[20];
217 err = get_tree_entry(tree->object.sha1, prefix,
219 if (err || !S_ISDIR(mode))
220 die("current working directory is untracked");
222 tree = parse_tree_indirect(tree_sha1);
224 ar_args->tree = tree;
225 ar_args->commit_sha1 = commit_sha1;
226 ar_args->commit = commit;
227 ar_args->time = archive_time;
230 int parse_archive_args(int argc, const char **argv, struct archiver *ar)
232 const char *extra_argv[MAX_EXTRA_ARGS];
234 const char *format = "tar";
235 const char *base = "";
239 for (i = 1; i < argc; i++) {
240 const char *arg = argv[i];
242 if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) {
243 for (i = 0; i < ARRAY_SIZE(archivers); i++)
244 printf("%s\n", archivers[i].name);
247 if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
251 if (!prefixcmp(arg, "--format=")) {
255 if (!prefixcmp(arg, "--prefix=")) {
259 if (!strcmp(arg, "--")) {
264 if (extra_argc > MAX_EXTRA_ARGS - 1)
265 die("Too many extra options");
266 extra_argv[extra_argc++] = arg;
272 /* We need at least one parameter -- tree-ish */
274 usage(archive_usage);
275 if (init_archiver(format, ar) < 0)
276 die("Unknown archive format '%s'", format);
279 if (!ar->parse_extra)
280 die("'%s' format does not handle %s",
281 ar->name, extra_argv[0]);
282 ar->args.extra = ar->parse_extra(extra_argc, extra_argv);
284 ar->args.verbose = verbose;
285 ar->args.base = base;
290 static const char *extract_remote_arg(int *ac, const char **av)
292 int ix, iy, cnt = *ac;
293 int no_more_options = 0;
294 const char *remote = NULL;
296 for (ix = iy = 1; ix < cnt; ix++) {
297 const char *arg = av[ix];
298 if (!strcmp(arg, "--"))
300 if (!no_more_options) {
301 if (!prefixcmp(arg, "--remote=")) {
303 die("Multiple --remote specified");
321 int cmd_archive(int argc, const char **argv, const char *prefix)
325 const char *remote = NULL;
327 remote = extract_remote_arg(&argc, argv);
329 return run_remote_archiver(remote, argc, argv);
331 setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
333 memset(&ar, 0, sizeof(ar));
334 tree_idx = parse_archive_args(argc, argv, &ar);
336 prefix = setup_git_directory();
339 parse_treeish_arg(argv, &ar.args, prefix);
340 parse_pathspec_arg(argv + 1, &ar.args);
342 return ar.write_archive(&ar.args);