6 #include "parse-options.h"
8 static char const * const archive_usage[] = {
9 "git archive [options] <tree-ish> [path...]",
11 "git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [path...]",
12 "git archive --remote <repo> [--exec <cmd>] --list",
16 #define USES_ZLIB_COMPRESSION 1
18 static const struct archiver {
20 write_archive_fn_t write_archive;
23 { "tar", write_tar_archive },
24 { "zip", write_zip_archive, USES_ZLIB_COMPRESSION },
27 static void format_subst(const struct commit *commit,
28 const char *src, size_t len,
32 struct strbuf fmt = STRBUF_INIT;
35 to_free = strbuf_detach(buf, NULL);
39 b = memmem(src, len, "$Format:", 8);
42 c = memchr(b + 8, '$', (src + len) - b - 8);
47 strbuf_add(&fmt, b + 8, c - b - 8);
49 strbuf_add(buf, src, b - src);
50 format_commit_message(commit, fmt.buf, buf, DATE_NORMAL);
54 strbuf_add(buf, src, len);
59 static void *sha1_file_to_archive(const char *path, const unsigned char *sha1,
60 unsigned int mode, enum object_type *type,
61 unsigned long *sizep, const struct commit *commit)
65 buffer = read_sha1_file(sha1, type, sizep);
66 if (buffer && S_ISREG(mode)) {
67 struct strbuf buf = STRBUF_INIT;
70 strbuf_attach(&buf, buffer, *sizep, *sizep + 1);
71 convert_to_working_tree(path, buf.buf, buf.len, &buf);
73 format_subst(commit, buf.buf, buf.len, &buf);
74 buffer = strbuf_detach(&buf, &size);
81 static void setup_archive_check(struct git_attr_check *check)
83 static struct git_attr *attr_export_ignore;
84 static struct git_attr *attr_export_subst;
86 if (!attr_export_ignore) {
87 attr_export_ignore = git_attr("export-ignore", 13);
88 attr_export_subst = git_attr("export-subst", 12);
90 check[0].attr = attr_export_ignore;
91 check[1].attr = attr_export_subst;
94 struct archiver_context {
95 struct archiver_args *args;
96 write_archive_entry_fn_t write_entry;
99 static int write_archive_entry(const unsigned char *sha1, const char *base,
100 int baselen, const char *filename, unsigned mode, int stage,
103 static struct strbuf path = STRBUF_INIT;
104 struct archiver_context *c = context;
105 struct archiver_args *args = c->args;
106 write_archive_entry_fn_t write_entry = c->write_entry;
107 struct git_attr_check check[2];
108 const char *path_without_prefix;
111 enum object_type type;
116 strbuf_grow(&path, PATH_MAX);
117 strbuf_add(&path, base, baselen);
118 strbuf_addstr(&path, filename);
119 path_without_prefix = path.buf + args->baselen;
121 setup_archive_check(check);
122 if (!git_checkattr(path_without_prefix, ARRAY_SIZE(check), check)) {
123 if (ATTR_TRUE(check[0].value))
125 convert = ATTR_TRUE(check[1].value);
128 if (S_ISDIR(mode) || S_ISGITLINK(mode)) {
129 strbuf_addch(&path, '/');
131 fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
132 err = write_entry(args, sha1, path.buf, path.len, mode, NULL, 0);
135 return READ_TREE_RECURSIVE;
138 buffer = sha1_file_to_archive(path_without_prefix, sha1, mode,
139 &type, &size, convert ? args->commit : NULL);
141 return error("cannot read %s", sha1_to_hex(sha1));
143 fprintf(stderr, "%.*s\n", (int)path.len, path.buf);
144 err = write_entry(args, sha1, path.buf, path.len, mode, buffer, size);
149 int write_archive_entries(struct archiver_args *args,
150 write_archive_entry_fn_t write_entry)
152 struct archiver_context context;
155 if (args->baselen > 0 && args->base[args->baselen - 1] == '/') {
156 size_t len = args->baselen;
158 while (len > 1 && args->base[len - 2] == '/')
161 fprintf(stderr, "%.*s\n", (int)len, args->base);
162 err = write_entry(args, args->tree->object.sha1, args->base,
163 len, 040777, NULL, 0);
169 context.write_entry = write_entry;
171 err = read_tree_recursive(args->tree, args->base, args->baselen, 0,
172 args->pathspec, write_archive_entry, &context);
173 if (err == READ_TREE_RECURSIVE)
178 static const struct archiver *lookup_archiver(const char *name)
185 for (i = 0; i < ARRAY_SIZE(archivers); i++) {
186 if (!strcmp(name, archivers[i].name))
187 return &archivers[i];
192 static void parse_pathspec_arg(const char **pathspec,
193 struct archiver_args *ar_args)
195 ar_args->pathspec = get_pathspec(ar_args->base, pathspec);
198 static void parse_treeish_arg(const char **argv,
199 struct archiver_args *ar_args, const char *prefix)
201 const char *name = argv[0];
202 const unsigned char *commit_sha1;
205 const struct commit *commit;
206 unsigned char sha1[20];
208 if (get_sha1(name, sha1))
209 die("Not a valid object name");
211 commit = lookup_commit_reference_gently(sha1, 1);
213 commit_sha1 = commit->object.sha1;
214 archive_time = commit->date;
217 archive_time = time(NULL);
220 tree = parse_tree_indirect(sha1);
222 die("not a tree object");
225 unsigned char tree_sha1[20];
229 err = get_tree_entry(tree->object.sha1, prefix,
231 if (err || !S_ISDIR(mode))
232 die("current working directory is untracked");
234 tree = parse_tree_indirect(tree_sha1);
236 ar_args->tree = tree;
237 ar_args->commit_sha1 = commit_sha1;
238 ar_args->commit = commit;
239 ar_args->time = archive_time;
242 #define OPT__COMPR(s, v, h, p) \
243 { OPTION_SET_INT, (s), NULL, (v), NULL, (h), \
244 PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, (p) }
245 #define OPT__COMPR_HIDDEN(s, v, p) \
246 { OPTION_SET_INT, (s), NULL, (v), NULL, "", \
247 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) }
249 static int parse_archive_args(int argc, const char **argv,
250 const struct archiver **ar, struct archiver_args *args)
252 const char *format = "tar";
253 const char *base = NULL;
254 const char *remote = NULL;
255 const char *exec = NULL;
256 int compression_level = -1;
260 struct option opts[] = {
262 OPT_STRING(0, "format", &format, "fmt", "archive format"),
263 OPT_STRING(0, "prefix", &base, "prefix",
264 "prepend prefix to each pathname in the archive"),
265 OPT__VERBOSE(&verbose),
266 OPT__COMPR('0', &compression_level, "store only", 0),
267 OPT__COMPR('1', &compression_level, "compress faster", 1),
268 OPT__COMPR_HIDDEN('2', &compression_level, 2),
269 OPT__COMPR_HIDDEN('3', &compression_level, 3),
270 OPT__COMPR_HIDDEN('4', &compression_level, 4),
271 OPT__COMPR_HIDDEN('5', &compression_level, 5),
272 OPT__COMPR_HIDDEN('6', &compression_level, 6),
273 OPT__COMPR_HIDDEN('7', &compression_level, 7),
274 OPT__COMPR_HIDDEN('8', &compression_level, 8),
275 OPT__COMPR('9', &compression_level, "compress better", 9),
277 OPT_BOOLEAN('l', "list", &list,
278 "list supported archive formats"),
280 OPT_STRING(0, "remote", &remote, "repo",
281 "retrieve the archive from remote repository <repo>"),
282 OPT_STRING(0, "exec", &exec, "cmd",
283 "path to the remote git-upload-archive command"),
287 argc = parse_options(argc, argv, opts, archive_usage, 0);
290 die("Unexpected option --remote");
292 die("Option --exec can only be used together with --remote");
298 for (i = 0; i < ARRAY_SIZE(archivers); i++)
299 printf("%s\n", archivers[i].name);
303 /* We need at least one parameter -- tree-ish */
305 usage_with_options(archive_usage, opts);
306 *ar = lookup_archiver(format);
308 die("Unknown archive format '%s'", format);
310 args->compression_level = Z_DEFAULT_COMPRESSION;
311 if (compression_level != -1) {
312 if ((*ar)->flags & USES_ZLIB_COMPRESSION)
313 args->compression_level = compression_level;
315 die("Argument not supported for format '%s': -%d",
316 format, compression_level);
319 args->verbose = verbose;
321 args->baselen = strlen(base);
326 int write_archive(int argc, const char **argv, const char *prefix,
329 const struct archiver *ar = NULL;
330 struct archiver_args args;
332 argc = parse_archive_args(argc, argv, &ar, &args);
333 if (setup_prefix && prefix == NULL)
334 prefix = setup_git_directory();
336 parse_treeish_arg(argv, &args, prefix);
337 parse_pathspec_arg(argv + 1, &args);
339 git_config(git_default_config, NULL);
341 return ar->write_archive(&args);