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Commit | Line | Data |
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215a7ad1 | 1 | #include "fetch.h" |
4250a5e5 DB |
2 | |
3 | #include "cache.h" | |
4 | #include "commit.h" | |
5 | #include "tree.h" | |
1bc995a3 | 6 | #include "tree-walk.h" |
3173bd49 DB |
7 | #include "tag.h" |
8 | #include "blob.h" | |
cd541a68 DB |
9 | #include "refs.h" |
10 | ||
4250a5e5 DB |
11 | int get_tree = 0; |
12 | int get_history = 0; | |
13 | int get_all = 0; | |
e78d9772 | 14 | int get_verbosely = 0; |
820eca68 | 15 | int get_recover = 0; |
b2d62f16 | 16 | static unsigned char current_commit_sha1[20]; |
4250a5e5 | 17 | |
1e8be59d DB |
18 | void pull_say(const char *fmt, const char *hex) |
19 | { | |
e78d9772 JH |
20 | if (get_verbosely) |
21 | fprintf(stderr, fmt, hex); | |
22 | } | |
23 | ||
b2d62f16 JH |
24 | static void report_missing(const char *what, const unsigned char *missing) |
25 | { | |
26 | char missing_hex[41]; | |
27 | ||
28 | strcpy(missing_hex, sha1_to_hex(missing));; | |
29 | fprintf(stderr, | |
30 | "Cannot obtain needed %s %s\nwhile processing commit %s.\n", | |
31 | what, missing_hex, sha1_to_hex(current_commit_sha1)); | |
32 | } | |
33 | ||
80077f07 | 34 | static int process(struct object *obj); |
3173bd49 | 35 | |
1e8be59d | 36 | static int process_tree(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 | ||
1bc995a3 LT |
44 | desc.buf = tree->buffer; |
45 | desc.size = tree->size; | |
4c068a98 | 46 | while (tree_entry(&desc, &entry)) { |
6f9012b6 JH |
47 | struct object *obj = NULL; |
48 | ||
4c068a98 LT |
49 | if (S_ISDIR(entry.mode)) { |
50 | struct tree *tree = lookup_tree(entry.sha1); | |
6f9012b6 JH |
51 | if (tree) |
52 | obj = &tree->object; | |
53 | } | |
54 | else { | |
4c068a98 | 55 | struct blob *blob = lookup_blob(entry.sha1); |
6f9012b6 JH |
56 | if (blob) |
57 | obj = &blob->object; | |
2d9c58c6 | 58 | } |
6f9012b6 | 59 | if (!obj || process(obj)) |
4250a5e5 | 60 | return -1; |
4250a5e5 | 61 | } |
2d9c58c6 LT |
62 | free(tree->buffer); |
63 | tree->buffer = NULL; | |
1bc995a3 | 64 | tree->size = 0; |
4250a5e5 DB |
65 | return 0; |
66 | } | |
67 | ||
24451c31 SV |
68 | #define COMPLETE (1U << 0) |
69 | #define SEEN (1U << 1) | |
70 | #define TO_SCAN (1U << 2) | |
85d106c2 | 71 | |
d0ac30f2 | 72 | static struct commit_list *complete = NULL; |
22c6e1d0 | 73 | |
1e8be59d | 74 | static int process_commit(struct commit *commit) |
4250a5e5 | 75 | { |
1e8be59d | 76 | if (parse_commit(commit)) |
4250a5e5 DB |
77 | return -1; |
78 | ||
22c6e1d0 | 79 | while (complete && complete->item->date >= commit->date) { |
d0ac30f2 | 80 | pop_most_recent_commit(&complete, COMPLETE); |
22c6e1d0 | 81 | } |
22c6e1d0 | 82 | |
d0ac30f2 | 83 | if (commit->object.flags & COMPLETE) |
22c6e1d0 DB |
84 | return 0; |
85 | ||
1e8be59d | 86 | memcpy(current_commit_sha1, commit->object.sha1, 20); |
4250a5e5 | 87 | |
85d106c2 JH |
88 | pull_say("walk %s\n", sha1_to_hex(commit->object.sha1)); |
89 | ||
4250a5e5 | 90 | if (get_tree) { |
80077f07 | 91 | if (process(&commit->tree->object)) |
4250a5e5 DB |
92 | return -1; |
93 | if (!get_all) | |
94 | get_tree = 0; | |
95 | } | |
96 | if (get_history) { | |
1e8be59d | 97 | struct commit_list *parents = commit->parents; |
4250a5e5 | 98 | for (; parents; parents = parents->next) { |
80077f07 | 99 | if (process(&parents->item->object)) |
4250a5e5 DB |
100 | return -1; |
101 | } | |
102 | } | |
103 | return 0; | |
104 | } | |
105 | ||
1e8be59d | 106 | static int process_tag(struct tag *tag) |
3173bd49 | 107 | { |
1e8be59d | 108 | if (parse_tag(tag)) |
3173bd49 | 109 | return -1; |
80077f07 | 110 | return process(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 | ||
f88fcf8b | 116 | static int process_object(struct object *obj) |
3173bd49 | 117 | { |
1974632c | 118 | if (obj->type == OBJ_COMMIT) { |
f88fcf8b DB |
119 | if (process_commit((struct commit *)obj)) |
120 | return -1; | |
121 | return 0; | |
122 | } | |
1974632c | 123 | if (obj->type == OBJ_TREE) { |
f88fcf8b DB |
124 | if (process_tree((struct tree *)obj)) |
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) { |
f88fcf8b DB |
132 | if (process_tag((struct tag *)obj)) |
133 | return -1; | |
3173bd49 | 134 | return 0; |
f88fcf8b DB |
135 | } |
136 | return error("Unable to determine requirements " | |
137 | "of type %s for %s", | |
885a86ab | 138 | typename(obj->type), sha1_to_hex(obj->sha1)); |
f88fcf8b DB |
139 | } |
140 | ||
80077f07 | 141 | static int process(struct object *obj) |
f88fcf8b | 142 | { |
a82d07e5 SV |
143 | if (obj->flags & SEEN) |
144 | return 0; | |
145 | obj->flags |= SEEN; | |
146 | ||
80077f07 | 147 | if (has_sha1_file(obj->sha1)) { |
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; | |
154 | prefetch(obj->sha1); | |
f88fcf8b | 155 | } |
7b64d06b | 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 | ||
162 | static int loop(void) | |
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)) { | |
11f0dafe | 178 | if (fetch(obj->sha1)) { |
885a86ab | 179 | report_missing(typename(obj->type), obj->sha1); |
85d106c2 JH |
180 | return -1; |
181 | } | |
182 | } | |
1e8be59d DB |
183 | if (!obj->type) |
184 | parse_object(obj->sha1); | |
f88fcf8b DB |
185 | if (process_object(obj)) |
186 | return -1; | |
1e8be59d DB |
187 | } |
188 | return 0; | |
3173bd49 DB |
189 | } |
190 | ||
cd541a68 DB |
191 | static int interpret_target(char *target, unsigned char *sha1) |
192 | { | |
193 | if (!get_sha1_hex(target, sha1)) | |
194 | return 0; | |
195 | if (!check_ref_format(target)) { | |
196 | if (!fetch_ref(target, sha1)) { | |
197 | return 0; | |
198 | } | |
199 | } | |
200 | return -1; | |
201 | } | |
202 | ||
22c6e1d0 DB |
203 | static int mark_complete(const char *path, const unsigned char *sha1) |
204 | { | |
d0ac30f2 JH |
205 | struct commit *commit = lookup_commit_reference_gently(sha1, 1); |
206 | if (commit) { | |
207 | commit->object.flags |= COMPLETE; | |
208 | insert_by_date(commit, &complete); | |
22c6e1d0 DB |
209 | } |
210 | return 0; | |
211 | } | |
cd541a68 | 212 | |
4211e4d1 | 213 | int pull(int targets, char **target, const char **write_ref, |
c6b69bdb | 214 | const char *write_ref_log_details) |
4250a5e5 | 215 | { |
4211e4d1 PB |
216 | struct ref_lock **lock = xcalloc(targets, sizeof(struct ref_lock *)); |
217 | unsigned char *sha1 = xmalloc(targets * 20); | |
d0740d92 SP |
218 | char *msg; |
219 | int ret; | |
4211e4d1 | 220 | int i; |
cd541a68 | 221 | |
98533b90 | 222 | save_commit_buffer = 0; |
a95cb6fb | 223 | track_object_refs = 0; |
4211e4d1 PB |
224 | |
225 | for (i = 0; i < targets; i++) { | |
226 | if (!write_ref[i]) | |
227 | continue; | |
228 | ||
229 | lock[i] = lock_ref_sha1(write_ref[i], NULL, 0); | |
230 | if (!lock[i]) { | |
231 | error("Can't lock ref %s", write_ref[i]); | |
232 | goto unlock_and_fail; | |
d0740d92 | 233 | } |
cd541a68 DB |
234 | } |
235 | ||
84c667ff | 236 | if (!get_recover) |
820eca68 | 237 | for_each_ref(mark_complete); |
22c6e1d0 | 238 | |
4211e4d1 PB |
239 | for (i = 0; i < targets; i++) { |
240 | if (interpret_target(target[i], &sha1[20 * i])) { | |
241 | error("Could not interpret %s as something to pull", target[i]); | |
242 | goto unlock_and_fail; | |
243 | } | |
244 | if (process(lookup_unknown_object(&sha1[20 * i]))) | |
245 | goto unlock_and_fail; | |
4bd18c43 | 246 | } |
4211e4d1 PB |
247 | |
248 | if (loop()) | |
249 | goto unlock_and_fail; | |
250 | ||
251 | if (write_ref_log_details) { | |
252 | msg = xmalloc(strlen(write_ref_log_details) + 12); | |
253 | sprintf(msg, "fetch from %s", write_ref_log_details); | |
254 | } else { | |
255 | msg = NULL; | |
4bd18c43 | 256 | } |
4211e4d1 PB |
257 | for (i = 0; i < targets; i++) { |
258 | if (!write_ref[i]) | |
259 | continue; | |
260 | ret = write_ref_sha1(lock[i], &sha1[20 * i], msg ? msg : "fetch (unknown)"); | |
261 | lock[i] = NULL; | |
262 | if (ret) | |
263 | goto unlock_and_fail; | |
4bd18c43 | 264 | } |
4211e4d1 PB |
265 | if (msg) |
266 | free(msg); | |
4bd18c43 | 267 | |
cd541a68 | 268 | return 0; |
4211e4d1 PB |
269 | |
270 | ||
271 | unlock_and_fail: | |
272 | for (i = 0; i < targets; i++) | |
273 | if (lock[i]) | |
274 | unlock_ref(lock[i]); | |
275 | return -1; | |
4250a5e5 | 276 | } |