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4df096a5 FBH |
1 | /* |
2 | * Copyright (c) 2006 Franck Bui-Huu | |
3 | * Copyright (c) 2006 Rene Scharfe | |
4 | */ | |
4df096a5 FBH |
5 | #include "cache.h" |
6 | #include "builtin.h" | |
7 | #include "archive.h" | |
8 | #include "commit.h" | |
9 | #include "tree-walk.h" | |
10 | #include "exec_cmd.h" | |
11 | #include "pkt-line.h" | |
23d6d112 | 12 | #include "sideband.h" |
8460b2fc | 13 | #include "attr.h" |
4df096a5 FBH |
14 | |
15 | static const char archive_usage[] = \ | |
e0ffb248 | 16 | "git-archive --format=<fmt> [--prefix=<prefix>/] [--verbose] [<extra>] <tree-ish> [path...]"; |
4df096a5 | 17 | |
6c2f207b SP |
18 | static struct archiver_desc |
19 | { | |
20 | const char *name; | |
21 | write_archive_fn_t write_archive; | |
22 | parse_extra_args_fn_t parse_extra; | |
23 | } archivers[] = { | |
24 | { "tar", write_tar_archive, NULL }, | |
25 | { "zip", write_zip_archive, parse_extra_zip_args }, | |
4df096a5 FBH |
26 | }; |
27 | ||
37f94436 | 28 | static int run_remote_archiver(const char *remote, int argc, |
4df096a5 FBH |
29 | const char **argv) |
30 | { | |
23d6d112 | 31 | char *url, buf[LARGE_PACKET_MAX]; |
4df096a5 FBH |
32 | int fd[2], i, len, rv; |
33 | pid_t pid; | |
fe5ab763 JH |
34 | const char *exec = "git-upload-archive"; |
35 | int exec_at = 0; | |
4df096a5 | 36 | |
fe5ab763 JH |
37 | for (i = 1; i < argc; i++) { |
38 | const char *arg = argv[i]; | |
599065a3 | 39 | if (!prefixcmp(arg, "--exec=")) { |
fe5ab763 JH |
40 | if (exec_at) |
41 | die("multiple --exec specified"); | |
42 | exec = arg + 7; | |
43 | exec_at = i; | |
44 | break; | |
45 | } | |
46 | } | |
4df096a5 | 47 | |
37f94436 | 48 | url = xstrdup(remote); |
7841ce79 | 49 | pid = git_connect(fd, url, exec, 0); |
4df096a5 FBH |
50 | if (pid < 0) |
51 | return pid; | |
52 | ||
fe5ab763 JH |
53 | for (i = 1; i < argc; i++) { |
54 | if (i == exec_at) | |
55 | continue; | |
4df096a5 | 56 | packet_write(fd[1], "argument %s\n", argv[i]); |
fe5ab763 | 57 | } |
4df096a5 FBH |
58 | packet_flush(fd[1]); |
59 | ||
60 | len = packet_read_line(fd[0], buf, sizeof(buf)); | |
61 | if (!len) | |
62 | die("git-archive: expected ACK/NAK, got EOF"); | |
63 | if (buf[len-1] == '\n') | |
64 | buf[--len] = 0; | |
65 | if (strcmp(buf, "ACK")) { | |
cc44c765 | 66 | if (len > 5 && !prefixcmp(buf, "NACK ")) |
4df096a5 FBH |
67 | die("git-archive: NACK %s", buf + 5); |
68 | die("git-archive: protocol error"); | |
69 | } | |
70 | ||
71 | len = packet_read_line(fd[0], buf, sizeof(buf)); | |
72 | if (len) | |
73 | die("git-archive: expected a flush"); | |
74 | ||
75 | /* Now, start reading from fd[0] and spit it out to stdout */ | |
9ac13ec9 | 76 | rv = recv_sideband("archive", fd[0], 1, 2); |
4df096a5 | 77 | close(fd[0]); |
ec587fde | 78 | close(fd[1]); |
4df096a5 FBH |
79 | rv |= finish_connect(pid); |
80 | ||
81 | return !!rv; | |
82 | } | |
83 | ||
8460b2fc RS |
84 | static void *convert_to_archive(const char *path, |
85 | const void *src, unsigned long *sizep, | |
86 | const struct commit *commit) | |
87 | { | |
88 | static struct git_attr *attr_specfile; | |
89 | struct git_attr_check check[1]; | |
90 | char *interpolated = NULL; | |
91 | unsigned long allocated = 0; | |
92 | ||
93 | if (!commit) | |
94 | return NULL; | |
95 | ||
96 | if (!attr_specfile) | |
97 | attr_specfile = git_attr("specfile", 8); | |
98 | ||
99 | check[0].attr = attr_specfile; | |
100 | if (git_checkattr(path, ARRAY_SIZE(check), check)) | |
101 | return NULL; | |
102 | if (!ATTR_TRUE(check[0].value)) | |
103 | return NULL; | |
104 | ||
105 | *sizep = format_commit_message(commit, src, &interpolated, &allocated); | |
106 | ||
107 | return interpolated; | |
108 | } | |
109 | ||
110 | void *sha1_file_to_archive(const char *path, const unsigned char *sha1, | |
111 | unsigned int mode, enum object_type *type, | |
112 | unsigned long *size, | |
113 | const struct commit *commit) | |
114 | { | |
115 | void *buffer, *converted; | |
116 | ||
117 | buffer = read_sha1_file(sha1, type, size); | |
118 | if (buffer && S_ISREG(mode)) { | |
119 | converted = convert_to_working_tree(path, buffer, size); | |
120 | if (converted) { | |
121 | free(buffer); | |
122 | buffer = converted; | |
123 | } | |
124 | ||
125 | converted = convert_to_archive(path, buffer, size, commit); | |
126 | if (converted) { | |
127 | free(buffer); | |
128 | buffer = converted; | |
129 | } | |
130 | } | |
131 | ||
132 | return buffer; | |
133 | } | |
134 | ||
4df096a5 FBH |
135 | static int init_archiver(const char *name, struct archiver *ar) |
136 | { | |
137 | int rv = -1, i; | |
138 | ||
139 | for (i = 0; i < ARRAY_SIZE(archivers); i++) { | |
140 | if (!strcmp(name, archivers[i].name)) { | |
6c2f207b SP |
141 | memset(ar, 0, sizeof(*ar)); |
142 | ar->name = archivers[i].name; | |
143 | ar->write_archive = archivers[i].write_archive; | |
144 | ar->parse_extra = archivers[i].parse_extra; | |
4df096a5 FBH |
145 | rv = 0; |
146 | break; | |
147 | } | |
148 | } | |
149 | return rv; | |
150 | } | |
151 | ||
152 | void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args) | |
153 | { | |
154 | ar_args->pathspec = get_pathspec(ar_args->base, pathspec); | |
155 | } | |
156 | ||
157 | void parse_treeish_arg(const char **argv, struct archiver_args *ar_args, | |
158 | const char *prefix) | |
159 | { | |
160 | const char *name = argv[0]; | |
161 | const unsigned char *commit_sha1; | |
162 | time_t archive_time; | |
163 | struct tree *tree; | |
8460b2fc | 164 | const struct commit *commit; |
4df096a5 FBH |
165 | unsigned char sha1[20]; |
166 | ||
167 | if (get_sha1(name, sha1)) | |
168 | die("Not a valid object name"); | |
169 | ||
170 | commit = lookup_commit_reference_gently(sha1, 1); | |
171 | if (commit) { | |
172 | commit_sha1 = commit->object.sha1; | |
173 | archive_time = commit->date; | |
174 | } else { | |
175 | commit_sha1 = NULL; | |
176 | archive_time = time(NULL); | |
177 | } | |
178 | ||
179 | tree = parse_tree_indirect(sha1); | |
180 | if (tree == NULL) | |
181 | die("not a tree object"); | |
182 | ||
183 | if (prefix) { | |
184 | unsigned char tree_sha1[20]; | |
185 | unsigned int mode; | |
186 | int err; | |
187 | ||
188 | err = get_tree_entry(tree->object.sha1, prefix, | |
189 | tree_sha1, &mode); | |
190 | if (err || !S_ISDIR(mode)) | |
191 | die("current working directory is untracked"); | |
192 | ||
4df096a5 FBH |
193 | tree = parse_tree_indirect(tree_sha1); |
194 | } | |
195 | ar_args->tree = tree; | |
196 | ar_args->commit_sha1 = commit_sha1; | |
8460b2fc | 197 | ar_args->commit = commit; |
4df096a5 FBH |
198 | ar_args->time = archive_time; |
199 | } | |
200 | ||
4df096a5 FBH |
201 | int parse_archive_args(int argc, const char **argv, struct archiver *ar) |
202 | { | |
203 | const char *extra_argv[MAX_EXTRA_ARGS]; | |
204 | int extra_argc = 0; | |
8ff21b1a | 205 | const char *format = "tar"; |
4df096a5 | 206 | const char *base = ""; |
e0ffb248 | 207 | int verbose = 0; |
4df096a5 FBH |
208 | int i; |
209 | ||
210 | for (i = 1; i < argc; i++) { | |
211 | const char *arg = argv[i]; | |
212 | ||
213 | if (!strcmp(arg, "--list") || !strcmp(arg, "-l")) { | |
37f94436 JH |
214 | for (i = 0; i < ARRAY_SIZE(archivers); i++) |
215 | printf("%s\n", archivers[i].name); | |
216 | exit(0); | |
4df096a5 | 217 | } |
e0ffb248 JH |
218 | if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) { |
219 | verbose = 1; | |
220 | continue; | |
221 | } | |
cc44c765 | 222 | if (!prefixcmp(arg, "--format=")) { |
4df096a5 FBH |
223 | format = arg + 9; |
224 | continue; | |
225 | } | |
cc44c765 | 226 | if (!prefixcmp(arg, "--prefix=")) { |
4df096a5 FBH |
227 | base = arg + 9; |
228 | continue; | |
229 | } | |
4df096a5 FBH |
230 | if (!strcmp(arg, "--")) { |
231 | i++; | |
232 | break; | |
233 | } | |
234 | if (arg[0] == '-') { | |
235 | if (extra_argc > MAX_EXTRA_ARGS - 1) | |
236 | die("Too many extra options"); | |
237 | extra_argv[extra_argc++] = arg; | |
238 | continue; | |
239 | } | |
240 | break; | |
241 | } | |
242 | ||
37f94436 JH |
243 | /* We need at least one parameter -- tree-ish */ |
244 | if (argc - 1 < i) | |
4df096a5 | 245 | usage(archive_usage); |
4df096a5 FBH |
246 | if (init_archiver(format, ar) < 0) |
247 | die("Unknown archive format '%s'", format); | |
248 | ||
37f94436 JH |
249 | if (extra_argc) { |
250 | if (!ar->parse_extra) | |
2232c0c6 RS |
251 | die("'%s' format does not handle %s", |
252 | ar->name, extra_argv[0]); | |
4df096a5 FBH |
253 | ar->args.extra = ar->parse_extra(extra_argc, extra_argv); |
254 | } | |
e0ffb248 | 255 | ar->args.verbose = verbose; |
4df096a5 FBH |
256 | ar->args.base = base; |
257 | ||
258 | return i; | |
259 | } | |
260 | ||
d751864c | 261 | static const char *extract_remote_arg(int *ac, const char **av) |
37f94436 JH |
262 | { |
263 | int ix, iy, cnt = *ac; | |
264 | int no_more_options = 0; | |
265 | const char *remote = NULL; | |
266 | ||
267 | for (ix = iy = 1; ix < cnt; ix++) { | |
268 | const char *arg = av[ix]; | |
269 | if (!strcmp(arg, "--")) | |
270 | no_more_options = 1; | |
271 | if (!no_more_options) { | |
cc44c765 | 272 | if (!prefixcmp(arg, "--remote=")) { |
37f94436 JH |
273 | if (remote) |
274 | die("Multiple --remote specified"); | |
275 | remote = arg + 9; | |
276 | continue; | |
277 | } | |
278 | if (arg[0] != '-') | |
279 | no_more_options = 1; | |
280 | } | |
281 | if (ix != iy) | |
282 | av[iy] = arg; | |
283 | iy++; | |
284 | } | |
285 | if (remote) { | |
286 | av[--cnt] = NULL; | |
287 | *ac = cnt; | |
288 | } | |
289 | return remote; | |
290 | } | |
291 | ||
4df096a5 FBH |
292 | int cmd_archive(int argc, const char **argv, const char *prefix) |
293 | { | |
294 | struct archiver ar; | |
295 | int tree_idx; | |
37f94436 | 296 | const char *remote = NULL; |
4df096a5 | 297 | |
d751864c | 298 | remote = extract_remote_arg(&argc, argv); |
37f94436 JH |
299 | if (remote) |
300 | return run_remote_archiver(remote, argc, argv); | |
4df096a5 | 301 | |
aa909861 | 302 | setvbuf(stderr, NULL, _IOLBF, BUFSIZ); |
8142f603 | 303 | |
37f94436 JH |
304 | memset(&ar, 0, sizeof(ar)); |
305 | tree_idx = parse_archive_args(argc, argv, &ar); | |
265d5280 RS |
306 | if (prefix == NULL) |
307 | prefix = setup_git_directory(); | |
4df096a5 FBH |
308 | |
309 | argv += tree_idx; | |
310 | parse_treeish_arg(argv, &ar.args, prefix); | |
311 | parse_pathspec_arg(argv + 1, &ar.args); | |
312 | ||
313 | return ar.write_archive(&ar.args); | |
314 | } |