]>
Commit | Line | Data |
---|---|---|
215a7ad1 | 1 | #include "fetch.h" |
4250a5e5 DB |
2 | |
3 | #include "cache.h" | |
4 | #include "commit.h" | |
5 | #include "tree.h" | |
3173bd49 DB |
6 | #include "tag.h" |
7 | #include "blob.h" | |
cd541a68 DB |
8 | #include "refs.h" |
9 | ||
10 | const char *write_ref = NULL; | |
11 | ||
12 | const unsigned char *current_ref = NULL; | |
4250a5e5 DB |
13 | |
14 | int get_tree = 0; | |
15 | int get_history = 0; | |
16 | int get_all = 0; | |
e78d9772 | 17 | int get_verbosely = 0; |
b2d62f16 | 18 | static unsigned char current_commit_sha1[20]; |
4250a5e5 | 19 | |
1e8be59d DB |
20 | void pull_say(const char *fmt, const char *hex) |
21 | { | |
e78d9772 JH |
22 | if (get_verbosely) |
23 | fprintf(stderr, fmt, hex); | |
24 | } | |
25 | ||
b2d62f16 JH |
26 | static void report_missing(const char *what, const unsigned char *missing) |
27 | { | |
28 | char missing_hex[41]; | |
29 | ||
30 | strcpy(missing_hex, sha1_to_hex(missing));; | |
31 | fprintf(stderr, | |
32 | "Cannot obtain needed %s %s\nwhile processing commit %s.\n", | |
33 | what, missing_hex, sha1_to_hex(current_commit_sha1)); | |
34 | } | |
35 | ||
80077f07 | 36 | static int process(struct object *obj); |
3173bd49 | 37 | |
1e8be59d | 38 | static int process_tree(struct tree *tree) |
4250a5e5 | 39 | { |
85d106c2 | 40 | struct tree_entry_list *entry; |
4250a5e5 DB |
41 | |
42 | if (parse_tree(tree)) | |
43 | return -1; | |
44 | ||
85d106c2 JH |
45 | entry = tree->entries; |
46 | tree->entries = NULL; | |
47 | while (entry) { | |
48 | struct tree_entry_list *next = entry->next; | |
80077f07 | 49 | if (process(entry->item.any)) |
4250a5e5 | 50 | return -1; |
85d106c2 JH |
51 | free(entry); |
52 | entry = next; | |
4250a5e5 DB |
53 | } |
54 | return 0; | |
55 | } | |
56 | ||
d0ac30f2 | 57 | #define COMPLETE 1U |
85d106c2 | 58 | #define TO_SCAN 4U |
a82d07e5 | 59 | #define SEEN 16U |
85d106c2 | 60 | |
d0ac30f2 | 61 | static struct commit_list *complete = NULL; |
22c6e1d0 | 62 | |
1e8be59d | 63 | static int process_commit(struct commit *commit) |
4250a5e5 | 64 | { |
1e8be59d | 65 | if (parse_commit(commit)) |
4250a5e5 DB |
66 | return -1; |
67 | ||
22c6e1d0 | 68 | while (complete && complete->item->date >= commit->date) { |
d0ac30f2 | 69 | pop_most_recent_commit(&complete, COMPLETE); |
22c6e1d0 | 70 | } |
22c6e1d0 | 71 | |
d0ac30f2 | 72 | if (commit->object.flags & COMPLETE) |
22c6e1d0 DB |
73 | return 0; |
74 | ||
1e8be59d | 75 | memcpy(current_commit_sha1, commit->object.sha1, 20); |
4250a5e5 | 76 | |
85d106c2 JH |
77 | pull_say("walk %s\n", sha1_to_hex(commit->object.sha1)); |
78 | ||
4250a5e5 | 79 | if (get_tree) { |
80077f07 | 80 | if (process(&commit->tree->object)) |
4250a5e5 DB |
81 | return -1; |
82 | if (!get_all) | |
83 | get_tree = 0; | |
84 | } | |
85 | if (get_history) { | |
1e8be59d | 86 | struct commit_list *parents = commit->parents; |
4250a5e5 | 87 | for (; parents; parents = parents->next) { |
80077f07 | 88 | if (process(&parents->item->object)) |
4250a5e5 DB |
89 | return -1; |
90 | } | |
91 | } | |
92 | return 0; | |
93 | } | |
94 | ||
1e8be59d | 95 | static int process_tag(struct tag *tag) |
3173bd49 | 96 | { |
1e8be59d | 97 | if (parse_tag(tag)) |
3173bd49 | 98 | return -1; |
80077f07 | 99 | return process(tag->tagged); |
3173bd49 DB |
100 | } |
101 | ||
1e8be59d DB |
102 | static struct object_list *process_queue = NULL; |
103 | static struct object_list **process_queue_end = &process_queue; | |
104 | ||
f88fcf8b | 105 | static int process_object(struct object *obj) |
3173bd49 | 106 | { |
f88fcf8b DB |
107 | if (obj->type == commit_type) { |
108 | if (process_commit((struct commit *)obj)) | |
109 | return -1; | |
110 | return 0; | |
111 | } | |
112 | if (obj->type == tree_type) { | |
113 | if (process_tree((struct tree *)obj)) | |
114 | return -1; | |
115 | return 0; | |
116 | } | |
117 | if (obj->type == blob_type) { | |
118 | return 0; | |
119 | } | |
120 | if (obj->type == tag_type) { | |
121 | if (process_tag((struct tag *)obj)) | |
122 | return -1; | |
3173bd49 | 123 | return 0; |
f88fcf8b DB |
124 | } |
125 | return error("Unable to determine requirements " | |
126 | "of type %s for %s", | |
127 | obj->type, sha1_to_hex(obj->sha1)); | |
128 | } | |
129 | ||
80077f07 | 130 | static int process(struct object *obj) |
f88fcf8b | 131 | { |
a82d07e5 SV |
132 | if (obj->flags & SEEN) |
133 | return 0; | |
134 | obj->flags |= SEEN; | |
135 | ||
80077f07 SV |
136 | if (has_sha1_file(obj->sha1)) { |
137 | parse_object(obj->sha1); | |
f88fcf8b | 138 | /* We already have it, so we should scan it now. */ |
85d106c2 | 139 | obj->flags |= TO_SCAN; |
7b64d06b SV |
140 | } else { |
141 | if (obj->flags & COMPLETE) | |
142 | return 0; | |
143 | prefetch(obj->sha1); | |
f88fcf8b | 144 | } |
7b64d06b | 145 | |
1e8be59d DB |
146 | object_list_insert(obj, process_queue_end); |
147 | process_queue_end = &(*process_queue_end)->next; | |
1e8be59d DB |
148 | return 0; |
149 | } | |
150 | ||
151 | static int loop(void) | |
152 | { | |
85d106c2 JH |
153 | struct object_list *elem; |
154 | ||
1e8be59d DB |
155 | while (process_queue) { |
156 | struct object *obj = process_queue->item; | |
85d106c2 JH |
157 | elem = process_queue; |
158 | process_queue = elem->next; | |
159 | free(elem); | |
1e8be59d DB |
160 | if (!process_queue) |
161 | process_queue_end = &process_queue; | |
162 | ||
85d106c2 JH |
163 | /* If we are not scanning this object, we placed it in |
164 | * the queue because we needed to fetch it first. | |
165 | */ | |
166 | if (! (obj->flags & TO_SCAN)) { | |
029f6de3 | 167 | if (!has_sha1_file(obj->sha1) && fetch(obj->sha1)) { |
85d106c2 JH |
168 | report_missing(obj->type |
169 | ? obj->type | |
170 | : "object", obj->sha1); | |
171 | return -1; | |
172 | } | |
173 | } | |
1e8be59d DB |
174 | if (!obj->type) |
175 | parse_object(obj->sha1); | |
f88fcf8b DB |
176 | if (process_object(obj)) |
177 | return -1; | |
1e8be59d DB |
178 | } |
179 | return 0; | |
3173bd49 DB |
180 | } |
181 | ||
cd541a68 DB |
182 | static int interpret_target(char *target, unsigned char *sha1) |
183 | { | |
184 | if (!get_sha1_hex(target, sha1)) | |
185 | return 0; | |
186 | if (!check_ref_format(target)) { | |
187 | if (!fetch_ref(target, sha1)) { | |
188 | return 0; | |
189 | } | |
190 | } | |
191 | return -1; | |
192 | } | |
193 | ||
22c6e1d0 DB |
194 | static int mark_complete(const char *path, const unsigned char *sha1) |
195 | { | |
d0ac30f2 JH |
196 | struct commit *commit = lookup_commit_reference_gently(sha1, 1); |
197 | if (commit) { | |
198 | commit->object.flags |= COMPLETE; | |
199 | insert_by_date(commit, &complete); | |
22c6e1d0 DB |
200 | } |
201 | return 0; | |
202 | } | |
cd541a68 | 203 | |
4250a5e5 DB |
204 | int pull(char *target) |
205 | { | |
4250a5e5 | 206 | unsigned char sha1[20]; |
cd541a68 DB |
207 | int fd = -1; |
208 | ||
98533b90 | 209 | save_commit_buffer = 0; |
cd541a68 DB |
210 | if (write_ref && current_ref) { |
211 | fd = lock_ref_sha1(write_ref, current_ref); | |
212 | if (fd < 0) | |
213 | return -1; | |
214 | } | |
215 | ||
22c6e1d0 DB |
216 | for_each_ref(mark_complete); |
217 | ||
cd541a68 DB |
218 | if (interpret_target(target, sha1)) |
219 | return error("Could not interpret %s as something to pull", | |
220 | target); | |
80077f07 | 221 | if (process(lookup_unknown_object(sha1))) |
1e8be59d DB |
222 | return -1; |
223 | if (loop()) | |
cd541a68 DB |
224 | return -1; |
225 | ||
226 | if (write_ref) { | |
227 | if (current_ref) { | |
228 | write_ref_sha1(write_ref, fd, sha1); | |
229 | } else { | |
230 | write_ref_sha1_unlocked(write_ref, sha1); | |
231 | } | |
232 | } | |
233 | return 0; | |
4250a5e5 | 234 | } |