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 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 (!strncmp("--exec=", arg, 7)) {
41 die("multiple --exec specified");
48 url = xstrdup(remote);
49 pid = git_connect(fd, url, exec);
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 && !strncmp(buf, "NACK ", 5))
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);
78 rv |= finish_connect(pid);
83 static int init_archiver(const char *name, struct archiver *ar)
87 for (i = 0; i < ARRAY_SIZE(archivers); i++) {
88 if (!strcmp(name, archivers[i].name)) {
89 memset(ar, 0, sizeof(*ar));
90 ar->name = archivers[i].name;
91 ar->write_archive = archivers[i].write_archive;
92 ar->parse_extra = archivers[i].parse_extra;
100 void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args)
102 ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
105 void parse_treeish_arg(const char **argv, struct archiver_args *ar_args,
108 const char *name = argv[0];
109 const unsigned char *commit_sha1;
112 struct commit *commit;
113 unsigned char sha1[20];
115 if (get_sha1(name, sha1))
116 die("Not a valid object name");
118 commit = lookup_commit_reference_gently(sha1, 1);
120 commit_sha1 = commit->object.sha1;
121 archive_time = commit->date;
124 archive_time = time(NULL);
127 tree = parse_tree_indirect(sha1);
129 die("not a tree object");
132 unsigned char tree_sha1[20];
136 err = get_tree_entry(tree->object.sha1, prefix,
138 if (err || !S_ISDIR(mode))
139 die("current working directory is untracked");
142 tree = parse_tree_indirect(tree_sha1);
144 ar_args->tree = tree;
145 ar_args->commit_sha1 = commit_sha1;
146 ar_args->time = archive_time;
149 int parse_archive_args(int argc, const char **argv, struct archiver *ar)
151 const char *extra_argv[MAX_EXTRA_ARGS];
153 const char *format = NULL; /* might want to default to "tar" */
154 const char *base = "";
158 for (i = 1; i < argc; i++) {
159 const char *arg = argv[i];
161 if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) {
162 for (i = 0; i < ARRAY_SIZE(archivers); i++)
163 printf("%s\n", archivers[i].name);
166 if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
170 if (!strncmp(arg, "--format=", 9)) {
174 if (!strncmp(arg, "--prefix=", 9)) {
178 if (!strcmp(arg, "--")) {
183 if (extra_argc > MAX_EXTRA_ARGS - 1)
184 die("Too many extra options");
185 extra_argv[extra_argc++] = arg;
191 /* We need at least one parameter -- tree-ish */
193 usage(archive_usage);
195 die("You must specify an archive format");
196 if (init_archiver(format, ar) < 0)
197 die("Unknown archive format '%s'", format);
200 if (!ar->parse_extra)
201 die("'%s' format does not handle %s",
202 ar->name, extra_argv[0]);
203 ar->args.extra = ar->parse_extra(extra_argc, extra_argv);
205 ar->args.verbose = verbose;
206 ar->args.base = base;
211 static const char *extract_remote_arg(int *ac, const char **av)
213 int ix, iy, cnt = *ac;
214 int no_more_options = 0;
215 const char *remote = NULL;
217 for (ix = iy = 1; ix < cnt; ix++) {
218 const char *arg = av[ix];
219 if (!strcmp(arg, "--"))
221 if (!no_more_options) {
222 if (!strncmp(arg, "--remote=", 9)) {
224 die("Multiple --remote specified");
242 int cmd_archive(int argc, const char **argv, const char *prefix)
246 const char *remote = NULL;
248 remote = extract_remote_arg(&argc, argv);
250 return run_remote_archiver(remote, argc, argv);
252 setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
254 memset(&ar, 0, sizeof(ar));
255 tree_idx = parse_archive_args(argc, argv, &ar);
257 prefix = setup_git_directory();
260 parse_treeish_arg(argv, &ar.args, prefix);
261 parse_pathspec_arg(argv + 1, &ar.args);
263 return ar.write_archive(&ar.args);