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Commit | Line | Data |
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4250a5e5 | 1 | #include "cache.h" |
30ae764b | 2 | #include "walker.h" |
109cd76d | 3 | #include "repository.h" |
cbd53a21 | 4 | #include "object-store.h" |
4250a5e5 DB |
5 | #include "commit.h" |
6 | #include "tree.h" | |
1bc995a3 | 7 | #include "tree-walk.h" |
3173bd49 DB |
8 | #include "tag.h" |
9 | #include "blob.h" | |
cd541a68 DB |
10 | #include "refs.h" |
11 | ||
94f5a121 | 12 | static struct object_id current_commit_oid; |
4250a5e5 | 13 | |
fa262cac | 14 | void walker_say(struct walker *walker, const char *fmt, ...) |
1e8be59d | 15 | { |
fa262cac JK |
16 | if (walker->get_verbosely) { |
17 | va_list ap; | |
18 | va_start(ap, fmt); | |
19 | vfprintf(stderr, fmt, ap); | |
20 | va_end(ap); | |
21 | } | |
e78d9772 JH |
22 | } |
23 | ||
0d7a6e4e | 24 | static void report_missing(const struct object *obj) |
b2d62f16 | 25 | { |
0d7a6e4e | 26 | fprintf(stderr, "Cannot obtain needed %s %s\n", |
debca9d2 | 27 | obj->type ? type_name(obj->type): "object", |
f2fd0760 | 28 | oid_to_hex(&obj->oid)); |
94f5a121 | 29 | if (!is_null_oid(¤t_commit_oid)) |
0d7a6e4e | 30 | fprintf(stderr, "while processing commit %s.\n", |
94f5a121 | 31 | oid_to_hex(¤t_commit_oid)); |
b2d62f16 JH |
32 | } |
33 | ||
30ae764b | 34 | static int process(struct walker *walker, struct object *obj); |
3173bd49 | 35 | |
30ae764b | 36 | static int process_tree(struct walker *walker, struct tree *tree) |
4250a5e5 | 37 | { |
1bc995a3 | 38 | struct tree_desc desc; |
4c068a98 | 39 | struct name_entry entry; |
4250a5e5 DB |
40 | |
41 | if (parse_tree(tree)) | |
42 | return -1; | |
43 | ||
6fda5e51 | 44 | init_tree_desc(&desc, tree->buffer, tree->size); |
4c068a98 | 45 | while (tree_entry(&desc, &entry)) { |
6f9012b6 JH |
46 | struct object *obj = NULL; |
47 | ||
582c7393 | 48 | /* submodule commits are not stored in the superproject */ |
68fb4650 | 49 | if (S_ISGITLINK(entry.mode)) |
582c7393 | 50 | continue; |
4c068a98 | 51 | if (S_ISDIR(entry.mode)) { |
740ee055 | 52 | struct tree *tree = lookup_tree(entry.oid); |
6f9012b6 JH |
53 | if (tree) |
54 | obj = &tree->object; | |
55 | } | |
56 | else { | |
3aca1fc6 | 57 | struct blob *blob = lookup_blob(entry.oid); |
6f9012b6 JH |
58 | if (blob) |
59 | obj = &blob->object; | |
2d9c58c6 | 60 | } |
30ae764b | 61 | if (!obj || process(walker, obj)) |
4250a5e5 | 62 | return -1; |
4250a5e5 | 63 | } |
6e454b9a | 64 | free_tree_buffer(tree); |
4250a5e5 DB |
65 | return 0; |
66 | } | |
67 | ||
208acbfb | 68 | /* Remember to update object flag allocation in object.h */ |
24451c31 SV |
69 | #define COMPLETE (1U << 0) |
70 | #define SEEN (1U << 1) | |
71 | #define TO_SCAN (1U << 2) | |
85d106c2 | 72 | |
d0ac30f2 | 73 | static struct commit_list *complete = NULL; |
22c6e1d0 | 74 | |
30ae764b | 75 | static int process_commit(struct walker *walker, struct commit *commit) |
4250a5e5 | 76 | { |
0b6b3429 MÅ |
77 | struct commit_list *parents; |
78 | ||
1e8be59d | 79 | if (parse_commit(commit)) |
4250a5e5 DB |
80 | return -1; |
81 | ||
22c6e1d0 | 82 | while (complete && complete->item->date >= commit->date) { |
d0ac30f2 | 83 | pop_most_recent_commit(&complete, COMPLETE); |
22c6e1d0 | 84 | } |
22c6e1d0 | 85 | |
d0ac30f2 | 86 | if (commit->object.flags & COMPLETE) |
22c6e1d0 DB |
87 | return 0; |
88 | ||
94f5a121 | 89 | oidcpy(¤t_commit_oid, &commit->object.oid); |
4250a5e5 | 90 | |
f2fd0760 | 91 | walker_say(walker, "walk %s\n", oid_to_hex(&commit->object.oid)); |
85d106c2 | 92 | |
c89b6e13 | 93 | if (process(walker, &get_commit_tree(commit)->object)) |
0b6b3429 MÅ |
94 | return -1; |
95 | ||
96 | for (parents = commit->parents; parents; parents = parents->next) { | |
97 | if (process(walker, &parents->item->object)) | |
4250a5e5 | 98 | return -1; |
4250a5e5 | 99 | } |
0b6b3429 | 100 | |
4250a5e5 DB |
101 | return 0; |
102 | } | |
103 | ||
30ae764b | 104 | static int process_tag(struct walker *walker, struct tag *tag) |
3173bd49 | 105 | { |
1e8be59d | 106 | if (parse_tag(tag)) |
3173bd49 | 107 | return -1; |
30ae764b | 108 | return process(walker, tag->tagged); |
3173bd49 DB |
109 | } |
110 | ||
1e8be59d DB |
111 | static struct object_list *process_queue = NULL; |
112 | static struct object_list **process_queue_end = &process_queue; | |
113 | ||
30ae764b | 114 | static int process_object(struct walker *walker, struct object *obj) |
3173bd49 | 115 | { |
1974632c | 116 | if (obj->type == OBJ_COMMIT) { |
30ae764b | 117 | if (process_commit(walker, (struct commit *)obj)) |
f88fcf8b DB |
118 | return -1; |
119 | return 0; | |
120 | } | |
1974632c | 121 | if (obj->type == OBJ_TREE) { |
30ae764b | 122 | if (process_tree(walker, (struct tree *)obj)) |
f88fcf8b DB |
123 | return -1; |
124 | return 0; | |
125 | } | |
1974632c | 126 | if (obj->type == OBJ_BLOB) { |
f88fcf8b DB |
127 | return 0; |
128 | } | |
1974632c | 129 | if (obj->type == OBJ_TAG) { |
30ae764b | 130 | if (process_tag(walker, (struct tag *)obj)) |
f88fcf8b | 131 | return -1; |
3173bd49 | 132 | return 0; |
f88fcf8b DB |
133 | } |
134 | return error("Unable to determine requirements " | |
135 | "of type %s for %s", | |
debca9d2 | 136 | type_name(obj->type), oid_to_hex(&obj->oid)); |
f88fcf8b DB |
137 | } |
138 | ||
30ae764b | 139 | static int process(struct walker *walker, struct object *obj) |
f88fcf8b | 140 | { |
a82d07e5 SV |
141 | if (obj->flags & SEEN) |
142 | return 0; | |
143 | obj->flags |= SEEN; | |
144 | ||
f2fd0760 | 145 | if (has_object_file(&obj->oid)) { |
f88fcf8b | 146 | /* We already have it, so we should scan it now. */ |
85d106c2 | 147 | obj->flags |= TO_SCAN; |
e5f38ec3 JH |
148 | } |
149 | else { | |
7b64d06b SV |
150 | if (obj->flags & COMPLETE) |
151 | return 0; | |
ed1c9977 | 152 | walker->prefetch(walker, obj->oid.hash); |
f88fcf8b | 153 | } |
a6080a0a | 154 | |
1e8be59d DB |
155 | object_list_insert(obj, process_queue_end); |
156 | process_queue_end = &(*process_queue_end)->next; | |
1e8be59d DB |
157 | return 0; |
158 | } | |
159 | ||
30ae764b | 160 | static int loop(struct walker *walker) |
1e8be59d | 161 | { |
85d106c2 JH |
162 | struct object_list *elem; |
163 | ||
1e8be59d DB |
164 | while (process_queue) { |
165 | struct object *obj = process_queue->item; | |
85d106c2 JH |
166 | elem = process_queue; |
167 | process_queue = elem->next; | |
168 | free(elem); | |
1e8be59d DB |
169 | if (!process_queue) |
170 | process_queue_end = &process_queue; | |
171 | ||
85d106c2 JH |
172 | /* If we are not scanning this object, we placed it in |
173 | * the queue because we needed to fetch it first. | |
174 | */ | |
175 | if (! (obj->flags & TO_SCAN)) { | |
ed1c9977 | 176 | if (walker->fetch(walker, obj->oid.hash)) { |
0d7a6e4e | 177 | report_missing(obj); |
85d106c2 JH |
178 | return -1; |
179 | } | |
180 | } | |
1e8be59d | 181 | if (!obj->type) |
109cd76d | 182 | parse_object(the_repository, &obj->oid); |
30ae764b | 183 | if (process_object(walker, obj)) |
f88fcf8b | 184 | return -1; |
1e8be59d DB |
185 | } |
186 | return 0; | |
3173bd49 DB |
187 | } |
188 | ||
94f5a121 | 189 | static int interpret_target(struct walker *walker, char *target, struct object_id *oid) |
cd541a68 | 190 | { |
94f5a121 | 191 | if (!get_oid_hex(target, oid)) |
cd541a68 | 192 | return 0; |
8d9c5010 | 193 | if (!check_refname_format(target, 0)) { |
59c69c0c | 194 | struct ref *ref = alloc_ref(target); |
c13b2633 | 195 | if (!walker->fetch_ref(walker, ref)) { |
94f5a121 | 196 | oidcpy(oid, &ref->old_oid); |
c13b2633 | 197 | free(ref); |
cd541a68 DB |
198 | return 0; |
199 | } | |
c13b2633 | 200 | free(ref); |
cd541a68 DB |
201 | } |
202 | return -1; | |
203 | } | |
204 | ||
b4ebaf9e MH |
205 | static int mark_complete(const char *path, const struct object_id *oid, |
206 | int flag, void *cb_data) | |
22c6e1d0 | 207 | { |
bc83266a | 208 | struct commit *commit = lookup_commit_reference_gently(oid, 1); |
b4ebaf9e | 209 | |
d0ac30f2 JH |
210 | if (commit) { |
211 | commit->object.flags |= COMPLETE; | |
3bc7a05b | 212 | commit_list_insert(commit, &complete); |
22c6e1d0 DB |
213 | } |
214 | return 0; | |
215 | } | |
cd541a68 | 216 | |
30ae764b | 217 | int walker_targets_stdin(char ***target, const char ***write_ref) |
8e87ca66 PB |
218 | { |
219 | int targets = 0, targets_alloc = 0; | |
f285a2d7 | 220 | struct strbuf buf = STRBUF_INIT; |
8e87ca66 | 221 | *target = NULL; *write_ref = NULL; |
8e87ca66 PB |
222 | while (1) { |
223 | char *rf_one = NULL; | |
224 | char *tg_one; | |
225 | ||
8f309aeb | 226 | if (strbuf_getline_lf(&buf, stdin) == EOF) |
8e87ca66 PB |
227 | break; |
228 | tg_one = buf.buf; | |
229 | rf_one = strchr(tg_one, '\t'); | |
230 | if (rf_one) | |
231 | *rf_one++ = 0; | |
232 | ||
233 | if (targets >= targets_alloc) { | |
234 | targets_alloc = targets_alloc ? targets_alloc * 2 : 64; | |
2756ca43 RS |
235 | REALLOC_ARRAY(*target, targets_alloc); |
236 | REALLOC_ARRAY(*write_ref, targets_alloc); | |
8e87ca66 | 237 | } |
9befac47 | 238 | (*target)[targets] = xstrdup(tg_one); |
8c53f071 | 239 | (*write_ref)[targets] = xstrdup_or_null(rf_one); |
8e87ca66 PB |
240 | targets++; |
241 | } | |
e6c019d0 | 242 | strbuf_release(&buf); |
8e87ca66 PB |
243 | return targets; |
244 | } | |
245 | ||
30ae764b | 246 | void walker_targets_free(int targets, char **target, const char **write_ref) |
8e87ca66 PB |
247 | { |
248 | while (targets--) { | |
249 | free(target[targets]); | |
24deea52 | 250 | if (write_ref) |
8e87ca66 PB |
251 | free((char *) write_ref[targets]); |
252 | } | |
253 | } | |
254 | ||
30ae764b DB |
255 | int walker_fetch(struct walker *walker, int targets, char **target, |
256 | const char **write_ref, const char *write_ref_log_details) | |
4250a5e5 | 257 | { |
b6b10bb4 RS |
258 | struct strbuf refname = STRBUF_INIT; |
259 | struct strbuf err = STRBUF_INIT; | |
260 | struct ref_transaction *transaction = NULL; | |
94f5a121 | 261 | struct object_id *oids = xmalloc(targets * sizeof(struct object_id)); |
b6b10bb4 RS |
262 | char *msg = NULL; |
263 | int i, ret = -1; | |
cd541a68 | 264 | |
98533b90 | 265 | save_commit_buffer = 0; |
4211e4d1 | 266 | |
b6b10bb4 RS |
267 | if (write_ref) { |
268 | transaction = ref_transaction_begin(&err); | |
269 | if (!transaction) { | |
270 | error("%s", err.buf); | |
271 | goto done; | |
d0740d92 | 272 | } |
cd541a68 DB |
273 | } |
274 | ||
3bc7a05b | 275 | if (!walker->get_recover) { |
b4ebaf9e | 276 | for_each_ref(mark_complete, NULL); |
3bc7a05b RS |
277 | commit_list_sort_by_date(&complete); |
278 | } | |
22c6e1d0 | 279 | |
4211e4d1 | 280 | for (i = 0; i < targets; i++) { |
94f5a121 | 281 | if (interpret_target(walker, target[i], oids + i)) { |
5f48741a | 282 | error("Could not interpret response from server '%s' as something to pull", target[i]); |
b6b10bb4 | 283 | goto done; |
4211e4d1 | 284 | } |
94f5a121 | 285 | if (process(walker, lookup_unknown_object(oids[i].hash))) |
b6b10bb4 | 286 | goto done; |
4bd18c43 | 287 | } |
4211e4d1 | 288 | |
30ae764b | 289 | if (loop(walker)) |
b6b10bb4 RS |
290 | goto done; |
291 | if (!write_ref) { | |
292 | ret = 0; | |
293 | goto done; | |
294 | } | |
4211e4d1 | 295 | if (write_ref_log_details) { |
01d678a2 | 296 | msg = xstrfmt("fetch from %s", write_ref_log_details); |
4211e4d1 PB |
297 | } else { |
298 | msg = NULL; | |
4bd18c43 | 299 | } |
4211e4d1 | 300 | for (i = 0; i < targets; i++) { |
b6b10bb4 | 301 | if (!write_ref[i]) |
4211e4d1 | 302 | continue; |
b6b10bb4 RS |
303 | strbuf_reset(&refname); |
304 | strbuf_addf(&refname, "refs/%s", write_ref[i]); | |
305 | if (ref_transaction_update(transaction, refname.buf, | |
89f3bbdd | 306 | oids + i, NULL, 0, |
db7516ab | 307 | msg ? msg : "fetch (unknown)", |
b6b10bb4 RS |
308 | &err)) { |
309 | error("%s", err.buf); | |
310 | goto done; | |
311 | } | |
312 | } | |
db7516ab | 313 | if (ref_transaction_commit(transaction, &err)) { |
b6b10bb4 RS |
314 | error("%s", err.buf); |
315 | goto done; | |
4bd18c43 | 316 | } |
4211e4d1 | 317 | |
b6b10bb4 | 318 | ret = 0; |
30ae764b | 319 | |
b6b10bb4 RS |
320 | done: |
321 | ref_transaction_free(transaction); | |
322 | free(msg); | |
94f5a121 | 323 | free(oids); |
b6b10bb4 RS |
324 | strbuf_release(&err); |
325 | strbuf_release(&refname); | |
326 | return ret; | |
4250a5e5 | 327 | } |
30ae764b DB |
328 | |
329 | void walker_free(struct walker *walker) | |
330 | { | |
331 | walker->cleanup(walker); | |
332 | free(walker); | |
333 | } |