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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)) { |
f86bcc7b | 52 | struct tree *tree = lookup_tree(the_repository, |
ea82b2a0 | 53 | &entry.oid); |
6f9012b6 JH |
54 | if (tree) |
55 | obj = &tree->object; | |
56 | } | |
57 | else { | |
da14a7ff | 58 | struct blob *blob = lookup_blob(the_repository, |
ea82b2a0 | 59 | &entry.oid); |
6f9012b6 JH |
60 | if (blob) |
61 | obj = &blob->object; | |
2d9c58c6 | 62 | } |
30ae764b | 63 | if (!obj || process(walker, obj)) |
4250a5e5 | 64 | return -1; |
4250a5e5 | 65 | } |
6e454b9a | 66 | free_tree_buffer(tree); |
4250a5e5 DB |
67 | return 0; |
68 | } | |
69 | ||
208acbfb | 70 | /* Remember to update object flag allocation in object.h */ |
24451c31 SV |
71 | #define COMPLETE (1U << 0) |
72 | #define SEEN (1U << 1) | |
73 | #define TO_SCAN (1U << 2) | |
85d106c2 | 74 | |
d0ac30f2 | 75 | static struct commit_list *complete = NULL; |
22c6e1d0 | 76 | |
30ae764b | 77 | static int process_commit(struct walker *walker, struct commit *commit) |
4250a5e5 | 78 | { |
0b6b3429 MÅ |
79 | struct commit_list *parents; |
80 | ||
1e8be59d | 81 | if (parse_commit(commit)) |
4250a5e5 DB |
82 | return -1; |
83 | ||
22c6e1d0 | 84 | while (complete && complete->item->date >= commit->date) { |
d0ac30f2 | 85 | pop_most_recent_commit(&complete, COMPLETE); |
22c6e1d0 | 86 | } |
22c6e1d0 | 87 | |
d0ac30f2 | 88 | if (commit->object.flags & COMPLETE) |
22c6e1d0 DB |
89 | return 0; |
90 | ||
94f5a121 | 91 | oidcpy(¤t_commit_oid, &commit->object.oid); |
4250a5e5 | 92 | |
f2fd0760 | 93 | walker_say(walker, "walk %s\n", oid_to_hex(&commit->object.oid)); |
85d106c2 | 94 | |
c89b6e13 | 95 | if (process(walker, &get_commit_tree(commit)->object)) |
0b6b3429 MÅ |
96 | return -1; |
97 | ||
98 | for (parents = commit->parents; parents; parents = parents->next) { | |
99 | if (process(walker, &parents->item->object)) | |
4250a5e5 | 100 | return -1; |
4250a5e5 | 101 | } |
0b6b3429 | 102 | |
4250a5e5 DB |
103 | return 0; |
104 | } | |
105 | ||
30ae764b | 106 | static int process_tag(struct walker *walker, struct tag *tag) |
3173bd49 | 107 | { |
1e8be59d | 108 | if (parse_tag(tag)) |
3173bd49 | 109 | return -1; |
30ae764b | 110 | return process(walker, tag->tagged); |
3173bd49 DB |
111 | } |
112 | ||
1e8be59d DB |
113 | static struct object_list *process_queue = NULL; |
114 | static struct object_list **process_queue_end = &process_queue; | |
115 | ||
30ae764b | 116 | static int process_object(struct walker *walker, struct object *obj) |
3173bd49 | 117 | { |
1974632c | 118 | if (obj->type == OBJ_COMMIT) { |
30ae764b | 119 | if (process_commit(walker, (struct commit *)obj)) |
f88fcf8b DB |
120 | return -1; |
121 | return 0; | |
122 | } | |
1974632c | 123 | if (obj->type == OBJ_TREE) { |
30ae764b | 124 | if (process_tree(walker, (struct tree *)obj)) |
f88fcf8b DB |
125 | return -1; |
126 | return 0; | |
127 | } | |
1974632c | 128 | if (obj->type == OBJ_BLOB) { |
f88fcf8b DB |
129 | return 0; |
130 | } | |
1974632c | 131 | if (obj->type == OBJ_TAG) { |
30ae764b | 132 | if (process_tag(walker, (struct tag *)obj)) |
f88fcf8b | 133 | return -1; |
3173bd49 | 134 | return 0; |
f88fcf8b DB |
135 | } |
136 | return error("Unable to determine requirements " | |
137 | "of type %s for %s", | |
debca9d2 | 138 | type_name(obj->type), oid_to_hex(&obj->oid)); |
f88fcf8b DB |
139 | } |
140 | ||
30ae764b | 141 | static int process(struct walker *walker, struct object *obj) |
f88fcf8b | 142 | { |
a82d07e5 SV |
143 | if (obj->flags & SEEN) |
144 | return 0; | |
145 | obj->flags |= SEEN; | |
146 | ||
f2fd0760 | 147 | if (has_object_file(&obj->oid)) { |
f88fcf8b | 148 | /* We already have it, so we should scan it now. */ |
85d106c2 | 149 | obj->flags |= TO_SCAN; |
e5f38ec3 JH |
150 | } |
151 | else { | |
7b64d06b SV |
152 | if (obj->flags & COMPLETE) |
153 | return 0; | |
ed1c9977 | 154 | walker->prefetch(walker, obj->oid.hash); |
f88fcf8b | 155 | } |
a6080a0a | 156 | |
1e8be59d DB |
157 | object_list_insert(obj, process_queue_end); |
158 | process_queue_end = &(*process_queue_end)->next; | |
1e8be59d DB |
159 | return 0; |
160 | } | |
161 | ||
30ae764b | 162 | static int loop(struct walker *walker) |
1e8be59d | 163 | { |
85d106c2 JH |
164 | struct object_list *elem; |
165 | ||
1e8be59d DB |
166 | while (process_queue) { |
167 | struct object *obj = process_queue->item; | |
85d106c2 JH |
168 | elem = process_queue; |
169 | process_queue = elem->next; | |
170 | free(elem); | |
1e8be59d DB |
171 | if (!process_queue) |
172 | process_queue_end = &process_queue; | |
173 | ||
85d106c2 JH |
174 | /* If we are not scanning this object, we placed it in |
175 | * the queue because we needed to fetch it first. | |
176 | */ | |
177 | if (! (obj->flags & TO_SCAN)) { | |
ed1c9977 | 178 | if (walker->fetch(walker, obj->oid.hash)) { |
0d7a6e4e | 179 | report_missing(obj); |
85d106c2 JH |
180 | return -1; |
181 | } | |
182 | } | |
1e8be59d | 183 | if (!obj->type) |
109cd76d | 184 | parse_object(the_repository, &obj->oid); |
30ae764b | 185 | if (process_object(walker, obj)) |
f88fcf8b | 186 | return -1; |
1e8be59d DB |
187 | } |
188 | return 0; | |
3173bd49 DB |
189 | } |
190 | ||
94f5a121 | 191 | static int interpret_target(struct walker *walker, char *target, struct object_id *oid) |
cd541a68 | 192 | { |
94f5a121 | 193 | if (!get_oid_hex(target, oid)) |
cd541a68 | 194 | return 0; |
8d9c5010 | 195 | if (!check_refname_format(target, 0)) { |
59c69c0c | 196 | struct ref *ref = alloc_ref(target); |
c13b2633 | 197 | if (!walker->fetch_ref(walker, ref)) { |
94f5a121 | 198 | oidcpy(oid, &ref->old_oid); |
c13b2633 | 199 | free(ref); |
cd541a68 DB |
200 | return 0; |
201 | } | |
c13b2633 | 202 | free(ref); |
cd541a68 DB |
203 | } |
204 | return -1; | |
205 | } | |
206 | ||
b4ebaf9e MH |
207 | static int mark_complete(const char *path, const struct object_id *oid, |
208 | int flag, void *cb_data) | |
22c6e1d0 | 209 | { |
21e1ee8f SB |
210 | struct commit *commit = lookup_commit_reference_gently(the_repository, |
211 | oid, 1); | |
b4ebaf9e | 212 | |
d0ac30f2 JH |
213 | if (commit) { |
214 | commit->object.flags |= COMPLETE; | |
3bc7a05b | 215 | commit_list_insert(commit, &complete); |
22c6e1d0 DB |
216 | } |
217 | return 0; | |
218 | } | |
cd541a68 | 219 | |
30ae764b | 220 | int walker_targets_stdin(char ***target, const char ***write_ref) |
8e87ca66 PB |
221 | { |
222 | int targets = 0, targets_alloc = 0; | |
f285a2d7 | 223 | struct strbuf buf = STRBUF_INIT; |
8e87ca66 | 224 | *target = NULL; *write_ref = NULL; |
8e87ca66 PB |
225 | while (1) { |
226 | char *rf_one = NULL; | |
227 | char *tg_one; | |
228 | ||
8f309aeb | 229 | if (strbuf_getline_lf(&buf, stdin) == EOF) |
8e87ca66 PB |
230 | break; |
231 | tg_one = buf.buf; | |
232 | rf_one = strchr(tg_one, '\t'); | |
233 | if (rf_one) | |
234 | *rf_one++ = 0; | |
235 | ||
236 | if (targets >= targets_alloc) { | |
237 | targets_alloc = targets_alloc ? targets_alloc * 2 : 64; | |
2756ca43 RS |
238 | REALLOC_ARRAY(*target, targets_alloc); |
239 | REALLOC_ARRAY(*write_ref, targets_alloc); | |
8e87ca66 | 240 | } |
9befac47 | 241 | (*target)[targets] = xstrdup(tg_one); |
8c53f071 | 242 | (*write_ref)[targets] = xstrdup_or_null(rf_one); |
8e87ca66 PB |
243 | targets++; |
244 | } | |
e6c019d0 | 245 | strbuf_release(&buf); |
8e87ca66 PB |
246 | return targets; |
247 | } | |
248 | ||
30ae764b | 249 | void walker_targets_free(int targets, char **target, const char **write_ref) |
8e87ca66 PB |
250 | { |
251 | while (targets--) { | |
252 | free(target[targets]); | |
24deea52 | 253 | if (write_ref) |
8e87ca66 PB |
254 | free((char *) write_ref[targets]); |
255 | } | |
256 | } | |
257 | ||
30ae764b DB |
258 | int walker_fetch(struct walker *walker, int targets, char **target, |
259 | const char **write_ref, const char *write_ref_log_details) | |
4250a5e5 | 260 | { |
b6b10bb4 RS |
261 | struct strbuf refname = STRBUF_INIT; |
262 | struct strbuf err = STRBUF_INIT; | |
263 | struct ref_transaction *transaction = NULL; | |
667b76ec | 264 | struct object_id *oids; |
b6b10bb4 RS |
265 | char *msg = NULL; |
266 | int i, ret = -1; | |
cd541a68 | 267 | |
98533b90 | 268 | save_commit_buffer = 0; |
4211e4d1 | 269 | |
667b76ec JK |
270 | ALLOC_ARRAY(oids, targets); |
271 | ||
b6b10bb4 RS |
272 | if (write_ref) { |
273 | transaction = ref_transaction_begin(&err); | |
274 | if (!transaction) { | |
275 | error("%s", err.buf); | |
276 | goto done; | |
d0740d92 | 277 | } |
cd541a68 DB |
278 | } |
279 | ||
3bc7a05b | 280 | if (!walker->get_recover) { |
b4ebaf9e | 281 | for_each_ref(mark_complete, NULL); |
3bc7a05b RS |
282 | commit_list_sort_by_date(&complete); |
283 | } | |
22c6e1d0 | 284 | |
4211e4d1 | 285 | for (i = 0; i < targets; i++) { |
94f5a121 | 286 | if (interpret_target(walker, target[i], oids + i)) { |
5f48741a | 287 | error("Could not interpret response from server '%s' as something to pull", target[i]); |
b6b10bb4 | 288 | goto done; |
4211e4d1 | 289 | } |
0ebbcf70 | 290 | if (process(walker, lookup_unknown_object(&oids[i]))) |
b6b10bb4 | 291 | goto done; |
4bd18c43 | 292 | } |
4211e4d1 | 293 | |
30ae764b | 294 | if (loop(walker)) |
b6b10bb4 RS |
295 | goto done; |
296 | if (!write_ref) { | |
297 | ret = 0; | |
298 | goto done; | |
299 | } | |
4211e4d1 | 300 | if (write_ref_log_details) { |
01d678a2 | 301 | msg = xstrfmt("fetch from %s", write_ref_log_details); |
4211e4d1 PB |
302 | } else { |
303 | msg = NULL; | |
4bd18c43 | 304 | } |
4211e4d1 | 305 | for (i = 0; i < targets; i++) { |
b6b10bb4 | 306 | if (!write_ref[i]) |
4211e4d1 | 307 | continue; |
b6b10bb4 RS |
308 | strbuf_reset(&refname); |
309 | strbuf_addf(&refname, "refs/%s", write_ref[i]); | |
310 | if (ref_transaction_update(transaction, refname.buf, | |
89f3bbdd | 311 | oids + i, NULL, 0, |
db7516ab | 312 | msg ? msg : "fetch (unknown)", |
b6b10bb4 RS |
313 | &err)) { |
314 | error("%s", err.buf); | |
315 | goto done; | |
316 | } | |
317 | } | |
db7516ab | 318 | if (ref_transaction_commit(transaction, &err)) { |
b6b10bb4 RS |
319 | error("%s", err.buf); |
320 | goto done; | |
4bd18c43 | 321 | } |
4211e4d1 | 322 | |
b6b10bb4 | 323 | ret = 0; |
30ae764b | 324 | |
b6b10bb4 RS |
325 | done: |
326 | ref_transaction_free(transaction); | |
327 | free(msg); | |
94f5a121 | 328 | free(oids); |
b6b10bb4 RS |
329 | strbuf_release(&err); |
330 | strbuf_release(&refname); | |
331 | return ret; | |
4250a5e5 | 332 | } |
30ae764b DB |
333 | |
334 | void walker_free(struct walker *walker) | |
335 | { | |
336 | walker->cleanup(walker); | |
337 | free(walker); | |
338 | } |