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Commit | Line | Data |
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4250a5e5 | 1 | #include "cache.h" |
30ae764b | 2 | #include "walker.h" |
4250a5e5 DB |
3 | #include "commit.h" |
4 | #include "tree.h" | |
1bc995a3 | 5 | #include "tree-walk.h" |
3173bd49 DB |
6 | #include "tag.h" |
7 | #include "blob.h" | |
cd541a68 DB |
8 | #include "refs.h" |
9 | ||
94f5a121 | 10 | static struct object_id current_commit_oid; |
4250a5e5 | 11 | |
fa262cac | 12 | void walker_say(struct walker *walker, const char *fmt, ...) |
1e8be59d | 13 | { |
fa262cac JK |
14 | if (walker->get_verbosely) { |
15 | va_list ap; | |
16 | va_start(ap, fmt); | |
17 | vfprintf(stderr, fmt, ap); | |
18 | va_end(ap); | |
19 | } | |
e78d9772 JH |
20 | } |
21 | ||
0d7a6e4e | 22 | static void report_missing(const struct object *obj) |
b2d62f16 | 23 | { |
0d7a6e4e | 24 | fprintf(stderr, "Cannot obtain needed %s %s\n", |
debca9d2 | 25 | obj->type ? type_name(obj->type): "object", |
f2fd0760 | 26 | oid_to_hex(&obj->oid)); |
94f5a121 | 27 | if (!is_null_oid(¤t_commit_oid)) |
0d7a6e4e | 28 | fprintf(stderr, "while processing commit %s.\n", |
94f5a121 | 29 | oid_to_hex(¤t_commit_oid)); |
b2d62f16 JH |
30 | } |
31 | ||
30ae764b | 32 | static int process(struct walker *walker, struct object *obj); |
3173bd49 | 33 | |
30ae764b | 34 | static int process_tree(struct walker *walker, struct tree *tree) |
4250a5e5 | 35 | { |
1bc995a3 | 36 | struct tree_desc desc; |
4c068a98 | 37 | struct name_entry entry; |
4250a5e5 DB |
38 | |
39 | if (parse_tree(tree)) | |
40 | return -1; | |
41 | ||
6fda5e51 | 42 | init_tree_desc(&desc, tree->buffer, tree->size); |
4c068a98 | 43 | while (tree_entry(&desc, &entry)) { |
6f9012b6 JH |
44 | struct object *obj = NULL; |
45 | ||
582c7393 | 46 | /* submodule commits are not stored in the superproject */ |
68fb4650 | 47 | if (S_ISGITLINK(entry.mode)) |
582c7393 | 48 | continue; |
4c068a98 | 49 | if (S_ISDIR(entry.mode)) { |
740ee055 | 50 | struct tree *tree = lookup_tree(entry.oid); |
6f9012b6 JH |
51 | if (tree) |
52 | obj = &tree->object; | |
53 | } | |
54 | else { | |
3aca1fc6 | 55 | struct blob *blob = lookup_blob(entry.oid); |
6f9012b6 JH |
56 | if (blob) |
57 | obj = &blob->object; | |
2d9c58c6 | 58 | } |
30ae764b | 59 | if (!obj || process(walker, obj)) |
4250a5e5 | 60 | return -1; |
4250a5e5 | 61 | } |
6e454b9a | 62 | free_tree_buffer(tree); |
4250a5e5 DB |
63 | return 0; |
64 | } | |
65 | ||
208acbfb | 66 | /* Remember to update object flag allocation in object.h */ |
24451c31 SV |
67 | #define COMPLETE (1U << 0) |
68 | #define SEEN (1U << 1) | |
69 | #define TO_SCAN (1U << 2) | |
85d106c2 | 70 | |
d0ac30f2 | 71 | static struct commit_list *complete = NULL; |
22c6e1d0 | 72 | |
30ae764b | 73 | static int process_commit(struct walker *walker, struct commit *commit) |
4250a5e5 | 74 | { |
0b6b3429 MÅ |
75 | struct commit_list *parents; |
76 | ||
1e8be59d | 77 | if (parse_commit(commit)) |
4250a5e5 DB |
78 | return -1; |
79 | ||
22c6e1d0 | 80 | while (complete && complete->item->date >= commit->date) { |
d0ac30f2 | 81 | pop_most_recent_commit(&complete, COMPLETE); |
22c6e1d0 | 82 | } |
22c6e1d0 | 83 | |
d0ac30f2 | 84 | if (commit->object.flags & COMPLETE) |
22c6e1d0 DB |
85 | return 0; |
86 | ||
94f5a121 | 87 | oidcpy(¤t_commit_oid, &commit->object.oid); |
4250a5e5 | 88 | |
f2fd0760 | 89 | walker_say(walker, "walk %s\n", oid_to_hex(&commit->object.oid)); |
85d106c2 | 90 | |
c89b6e13 | 91 | if (process(walker, &get_commit_tree(commit)->object)) |
0b6b3429 MÅ |
92 | return -1; |
93 | ||
94 | for (parents = commit->parents; parents; parents = parents->next) { | |
95 | if (process(walker, &parents->item->object)) | |
4250a5e5 | 96 | return -1; |
4250a5e5 | 97 | } |
0b6b3429 | 98 | |
4250a5e5 DB |
99 | return 0; |
100 | } | |
101 | ||
30ae764b | 102 | static int process_tag(struct walker *walker, struct tag *tag) |
3173bd49 | 103 | { |
1e8be59d | 104 | if (parse_tag(tag)) |
3173bd49 | 105 | return -1; |
30ae764b | 106 | return process(walker, tag->tagged); |
3173bd49 DB |
107 | } |
108 | ||
1e8be59d DB |
109 | static struct object_list *process_queue = NULL; |
110 | static struct object_list **process_queue_end = &process_queue; | |
111 | ||
30ae764b | 112 | static int process_object(struct walker *walker, struct object *obj) |
3173bd49 | 113 | { |
1974632c | 114 | if (obj->type == OBJ_COMMIT) { |
30ae764b | 115 | if (process_commit(walker, (struct commit *)obj)) |
f88fcf8b DB |
116 | return -1; |
117 | return 0; | |
118 | } | |
1974632c | 119 | if (obj->type == OBJ_TREE) { |
30ae764b | 120 | if (process_tree(walker, (struct tree *)obj)) |
f88fcf8b DB |
121 | return -1; |
122 | return 0; | |
123 | } | |
1974632c | 124 | if (obj->type == OBJ_BLOB) { |
f88fcf8b DB |
125 | return 0; |
126 | } | |
1974632c | 127 | if (obj->type == OBJ_TAG) { |
30ae764b | 128 | if (process_tag(walker, (struct tag *)obj)) |
f88fcf8b | 129 | return -1; |
3173bd49 | 130 | return 0; |
f88fcf8b DB |
131 | } |
132 | return error("Unable to determine requirements " | |
133 | "of type %s for %s", | |
debca9d2 | 134 | type_name(obj->type), oid_to_hex(&obj->oid)); |
f88fcf8b DB |
135 | } |
136 | ||
30ae764b | 137 | static int process(struct walker *walker, struct object *obj) |
f88fcf8b | 138 | { |
a82d07e5 SV |
139 | if (obj->flags & SEEN) |
140 | return 0; | |
141 | obj->flags |= SEEN; | |
142 | ||
f2fd0760 | 143 | if (has_object_file(&obj->oid)) { |
f88fcf8b | 144 | /* We already have it, so we should scan it now. */ |
85d106c2 | 145 | obj->flags |= TO_SCAN; |
e5f38ec3 JH |
146 | } |
147 | else { | |
7b64d06b SV |
148 | if (obj->flags & COMPLETE) |
149 | return 0; | |
ed1c9977 | 150 | walker->prefetch(walker, obj->oid.hash); |
f88fcf8b | 151 | } |
a6080a0a | 152 | |
1e8be59d DB |
153 | object_list_insert(obj, process_queue_end); |
154 | process_queue_end = &(*process_queue_end)->next; | |
1e8be59d DB |
155 | return 0; |
156 | } | |
157 | ||
30ae764b | 158 | static int loop(struct walker *walker) |
1e8be59d | 159 | { |
85d106c2 JH |
160 | struct object_list *elem; |
161 | ||
1e8be59d DB |
162 | while (process_queue) { |
163 | struct object *obj = process_queue->item; | |
85d106c2 JH |
164 | elem = process_queue; |
165 | process_queue = elem->next; | |
166 | free(elem); | |
1e8be59d DB |
167 | if (!process_queue) |
168 | process_queue_end = &process_queue; | |
169 | ||
85d106c2 JH |
170 | /* If we are not scanning this object, we placed it in |
171 | * the queue because we needed to fetch it first. | |
172 | */ | |
173 | if (! (obj->flags & TO_SCAN)) { | |
ed1c9977 | 174 | if (walker->fetch(walker, obj->oid.hash)) { |
0d7a6e4e | 175 | report_missing(obj); |
85d106c2 JH |
176 | return -1; |
177 | } | |
178 | } | |
1e8be59d | 179 | if (!obj->type) |
c251c83d | 180 | parse_object(&obj->oid); |
30ae764b | 181 | if (process_object(walker, obj)) |
f88fcf8b | 182 | return -1; |
1e8be59d DB |
183 | } |
184 | return 0; | |
3173bd49 DB |
185 | } |
186 | ||
94f5a121 | 187 | static int interpret_target(struct walker *walker, char *target, struct object_id *oid) |
cd541a68 | 188 | { |
94f5a121 | 189 | if (!get_oid_hex(target, oid)) |
cd541a68 | 190 | return 0; |
8d9c5010 | 191 | if (!check_refname_format(target, 0)) { |
59c69c0c | 192 | struct ref *ref = alloc_ref(target); |
c13b2633 | 193 | if (!walker->fetch_ref(walker, ref)) { |
94f5a121 | 194 | oidcpy(oid, &ref->old_oid); |
c13b2633 | 195 | free(ref); |
cd541a68 DB |
196 | return 0; |
197 | } | |
c13b2633 | 198 | free(ref); |
cd541a68 DB |
199 | } |
200 | return -1; | |
201 | } | |
202 | ||
b4ebaf9e MH |
203 | static int mark_complete(const char *path, const struct object_id *oid, |
204 | int flag, void *cb_data) | |
22c6e1d0 | 205 | { |
bc83266a | 206 | struct commit *commit = lookup_commit_reference_gently(oid, 1); |
b4ebaf9e | 207 | |
d0ac30f2 JH |
208 | if (commit) { |
209 | commit->object.flags |= COMPLETE; | |
3bc7a05b | 210 | commit_list_insert(commit, &complete); |
22c6e1d0 DB |
211 | } |
212 | return 0; | |
213 | } | |
cd541a68 | 214 | |
30ae764b | 215 | int walker_targets_stdin(char ***target, const char ***write_ref) |
8e87ca66 PB |
216 | { |
217 | int targets = 0, targets_alloc = 0; | |
f285a2d7 | 218 | struct strbuf buf = STRBUF_INIT; |
8e87ca66 | 219 | *target = NULL; *write_ref = NULL; |
8e87ca66 PB |
220 | while (1) { |
221 | char *rf_one = NULL; | |
222 | char *tg_one; | |
223 | ||
8f309aeb | 224 | if (strbuf_getline_lf(&buf, stdin) == EOF) |
8e87ca66 PB |
225 | break; |
226 | tg_one = buf.buf; | |
227 | rf_one = strchr(tg_one, '\t'); | |
228 | if (rf_one) | |
229 | *rf_one++ = 0; | |
230 | ||
231 | if (targets >= targets_alloc) { | |
232 | targets_alloc = targets_alloc ? targets_alloc * 2 : 64; | |
2756ca43 RS |
233 | REALLOC_ARRAY(*target, targets_alloc); |
234 | REALLOC_ARRAY(*write_ref, targets_alloc); | |
8e87ca66 | 235 | } |
9befac47 | 236 | (*target)[targets] = xstrdup(tg_one); |
8c53f071 | 237 | (*write_ref)[targets] = xstrdup_or_null(rf_one); |
8e87ca66 PB |
238 | targets++; |
239 | } | |
e6c019d0 | 240 | strbuf_release(&buf); |
8e87ca66 PB |
241 | return targets; |
242 | } | |
243 | ||
30ae764b | 244 | void walker_targets_free(int targets, char **target, const char **write_ref) |
8e87ca66 PB |
245 | { |
246 | while (targets--) { | |
247 | free(target[targets]); | |
24deea52 | 248 | if (write_ref) |
8e87ca66 PB |
249 | free((char *) write_ref[targets]); |
250 | } | |
251 | } | |
252 | ||
30ae764b DB |
253 | int walker_fetch(struct walker *walker, int targets, char **target, |
254 | const char **write_ref, const char *write_ref_log_details) | |
4250a5e5 | 255 | { |
b6b10bb4 RS |
256 | struct strbuf refname = STRBUF_INIT; |
257 | struct strbuf err = STRBUF_INIT; | |
258 | struct ref_transaction *transaction = NULL; | |
94f5a121 | 259 | struct object_id *oids = xmalloc(targets * sizeof(struct object_id)); |
b6b10bb4 RS |
260 | char *msg = NULL; |
261 | int i, ret = -1; | |
cd541a68 | 262 | |
98533b90 | 263 | save_commit_buffer = 0; |
4211e4d1 | 264 | |
b6b10bb4 RS |
265 | if (write_ref) { |
266 | transaction = ref_transaction_begin(&err); | |
267 | if (!transaction) { | |
268 | error("%s", err.buf); | |
269 | goto done; | |
d0740d92 | 270 | } |
cd541a68 DB |
271 | } |
272 | ||
3bc7a05b | 273 | if (!walker->get_recover) { |
b4ebaf9e | 274 | for_each_ref(mark_complete, NULL); |
3bc7a05b RS |
275 | commit_list_sort_by_date(&complete); |
276 | } | |
22c6e1d0 | 277 | |
4211e4d1 | 278 | for (i = 0; i < targets; i++) { |
94f5a121 | 279 | if (interpret_target(walker, target[i], oids + i)) { |
5f48741a | 280 | error("Could not interpret response from server '%s' as something to pull", target[i]); |
b6b10bb4 | 281 | goto done; |
4211e4d1 | 282 | } |
94f5a121 | 283 | if (process(walker, lookup_unknown_object(oids[i].hash))) |
b6b10bb4 | 284 | goto done; |
4bd18c43 | 285 | } |
4211e4d1 | 286 | |
30ae764b | 287 | if (loop(walker)) |
b6b10bb4 RS |
288 | goto done; |
289 | if (!write_ref) { | |
290 | ret = 0; | |
291 | goto done; | |
292 | } | |
4211e4d1 | 293 | if (write_ref_log_details) { |
01d678a2 | 294 | msg = xstrfmt("fetch from %s", write_ref_log_details); |
4211e4d1 PB |
295 | } else { |
296 | msg = NULL; | |
4bd18c43 | 297 | } |
4211e4d1 | 298 | for (i = 0; i < targets; i++) { |
b6b10bb4 | 299 | if (!write_ref[i]) |
4211e4d1 | 300 | continue; |
b6b10bb4 RS |
301 | strbuf_reset(&refname); |
302 | strbuf_addf(&refname, "refs/%s", write_ref[i]); | |
303 | if (ref_transaction_update(transaction, refname.buf, | |
89f3bbdd | 304 | oids + i, NULL, 0, |
db7516ab | 305 | msg ? msg : "fetch (unknown)", |
b6b10bb4 RS |
306 | &err)) { |
307 | error("%s", err.buf); | |
308 | goto done; | |
309 | } | |
310 | } | |
db7516ab | 311 | if (ref_transaction_commit(transaction, &err)) { |
b6b10bb4 RS |
312 | error("%s", err.buf); |
313 | goto done; | |
4bd18c43 | 314 | } |
4211e4d1 | 315 | |
b6b10bb4 | 316 | ret = 0; |
30ae764b | 317 | |
b6b10bb4 RS |
318 | done: |
319 | ref_transaction_free(transaction); | |
320 | free(msg); | |
94f5a121 | 321 | free(oids); |
b6b10bb4 RS |
322 | strbuf_release(&err); |
323 | strbuf_release(&refname); | |
324 | return ret; | |
4250a5e5 | 325 | } |
30ae764b DB |
326 | |
327 | void walker_free(struct walker *walker) | |
328 | { | |
329 | walker->cleanup(walker); | |
330 | free(walker); | |
331 | } |