2 * Copyright (c) 2006 Franck Bui-Huu
3 * Copyright (c) 2006 Rene Scharfe
10 #include "tree-walk.h"
15 static const char archive_usage[] = \
16 "git-archive --format=<fmt> [--prefix=<prefix>/] [--verbose] [<extra>] <tree-ish> [path...]";
18 struct archiver archivers[] = {
21 .write_archive = write_tar_archive,
25 .write_archive = write_zip_archive,
26 .parse_extra = parse_extra_zip_args,
30 static int run_remote_archiver(const char *remote, int argc,
33 char *url, buf[LARGE_PACKET_MAX];
34 int fd[2], i, len, rv;
36 const char *exec = "git-upload-archive";
39 for (i = 1; i < argc; i++) {
40 const char *arg = argv[i];
41 if (!strncmp("--exec=", arg, 7)) {
43 die("multiple --exec specified");
50 url = xstrdup(remote);
51 pid = git_connect(fd, url, exec);
55 for (i = 1; i < argc; i++) {
58 packet_write(fd[1], "argument %s\n", argv[i]);
62 len = packet_read_line(fd[0], buf, sizeof(buf));
64 die("git-archive: expected ACK/NAK, got EOF");
65 if (buf[len-1] == '\n')
67 if (strcmp(buf, "ACK")) {
68 if (len > 5 && !strncmp(buf, "NACK ", 5))
69 die("git-archive: NACK %s", buf + 5);
70 die("git-archive: protocol error");
73 len = packet_read_line(fd[0], buf, sizeof(buf));
75 die("git-archive: expected a flush");
77 /* Now, start reading from fd[0] and spit it out to stdout */
78 rv = recv_sideband("archive", fd[0], 1, 2, buf, sizeof(buf));
80 rv |= finish_connect(pid);
85 static int init_archiver(const char *name, struct archiver *ar)
89 for (i = 0; i < ARRAY_SIZE(archivers); i++) {
90 if (!strcmp(name, archivers[i].name)) {
91 memcpy(ar, &archivers[i], sizeof(struct archiver));
99 void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args)
101 ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
104 void parse_treeish_arg(const char **argv, struct archiver_args *ar_args,
107 const char *name = argv[0];
108 const unsigned char *commit_sha1;
111 struct commit *commit;
112 unsigned char sha1[20];
114 if (get_sha1(name, sha1))
115 die("Not a valid object name");
117 commit = lookup_commit_reference_gently(sha1, 1);
119 commit_sha1 = commit->object.sha1;
120 archive_time = commit->date;
123 archive_time = time(NULL);
126 tree = parse_tree_indirect(sha1);
128 die("not a tree object");
131 unsigned char tree_sha1[20];
135 err = get_tree_entry(tree->object.sha1, prefix,
137 if (err || !S_ISDIR(mode))
138 die("current working directory is untracked");
141 tree = parse_tree_indirect(tree_sha1);
143 ar_args->tree = tree;
144 ar_args->commit_sha1 = commit_sha1;
145 ar_args->time = archive_time;
148 int parse_archive_args(int argc, const char **argv, struct archiver *ar)
150 const char *extra_argv[MAX_EXTRA_ARGS];
152 const char *format = NULL; /* might want to default to "tar" */
153 const char *base = "";
157 for (i = 1; i < argc; i++) {
158 const char *arg = argv[i];
160 if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) {
161 for (i = 0; i < ARRAY_SIZE(archivers); i++)
162 printf("%s\n", archivers[i].name);
165 if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
169 if (!strncmp(arg, "--format=", 9)) {
173 if (!strncmp(arg, "--prefix=", 9)) {
177 if (!strcmp(arg, "--")) {
182 if (extra_argc > MAX_EXTRA_ARGS - 1)
183 die("Too many extra options");
184 extra_argv[extra_argc++] = arg;
190 /* We need at least one parameter -- tree-ish */
192 usage(archive_usage);
194 die("You must specify an archive format");
195 if (init_archiver(format, ar) < 0)
196 die("Unknown archive format '%s'", format);
199 if (!ar->parse_extra)
200 die("'%s' format does not handle %s",
201 ar->name, extra_argv[0]);
202 ar->args.extra = ar->parse_extra(extra_argc, extra_argv);
204 ar->args.verbose = verbose;
205 ar->args.base = base;
210 static const char *extract_remote_arg(int *ac, const char **av)
212 int ix, iy, cnt = *ac;
213 int no_more_options = 0;
214 const char *remote = NULL;
216 for (ix = iy = 1; ix < cnt; ix++) {
217 const char *arg = av[ix];
218 if (!strcmp(arg, "--"))
220 if (!no_more_options) {
221 if (!strncmp(arg, "--remote=", 9)) {
223 die("Multiple --remote specified");
241 int cmd_archive(int argc, const char **argv, const char *prefix)
245 const char *remote = NULL;
247 remote = extract_remote_arg(&argc, argv);
249 return run_remote_archiver(remote, argc, argv);
253 memset(&ar, 0, sizeof(ar));
254 tree_idx = parse_archive_args(argc, argv, &ar);
256 prefix = setup_git_directory();
259 parse_treeish_arg(argv, &ar.args, prefix);
260 parse_pathspec_arg(argv + 1, &ar.args);
262 return ar.write_archive(&ar.args);