]>
Commit | Line | Data |
---|---|---|
8f1d2e6f | 1 | #include "cache.h" |
961784ee | 2 | #include "tag.h" |
175785e5 | 3 | #include "commit.h" |
177722b3 | 4 | #include "commit-graph.h" |
6a1a79fd | 5 | #include "repository.h" |
cbd53a21 | 6 | #include "object-store.h" |
ed09aef0 | 7 | #include "pkt-line.h" |
52883fbd | 8 | #include "utf8.h" |
199c45bf JH |
9 | #include "diff.h" |
10 | #include "revision.h" | |
a97a7468 | 11 | #include "notes.h" |
14ba97f8 | 12 | #include "alloc.h" |
ba3c69a9 | 13 | #include "gpg-interface.h" |
46905893 | 14 | #include "mergesort.h" |
a84b794a | 15 | #include "commit-slab.h" |
da24b104 | 16 | #include "prio-queue.h" |
0a9136f3 | 17 | #include "sha1-lookup.h" |
d76650b8 | 18 | #include "wt-status.h" |
f9f99b3f | 19 | #include "advice.h" |
103148aa | 20 | #include "refs.h" |
02931217 | 21 | #include "commit-reach.h" |
175785e5 | 22 | |
82a75299 JH |
23 | static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **); |
24 | ||
60ab26de LT |
25 | int save_commit_buffer = 1; |
26 | ||
175785e5 DB |
27 | const char *commit_type = "commit"; |
28 | ||
d9a05e74 | 29 | struct commit *lookup_commit_reference_gently(struct repository *r, |
21e1ee8f | 30 | const struct object_id *oid, int quiet) |
961784ee | 31 | { |
d9a05e74 SB |
32 | struct object *obj = deref_tag(r, |
33 | parse_object(r, oid), | |
109cd76d | 34 | NULL, 0); |
961784ee LT |
35 | |
36 | if (!obj) | |
37 | return NULL; | |
d9a05e74 | 38 | return object_as_type(r, obj, OBJ_COMMIT, quiet); |
f76412ed JH |
39 | } |
40 | ||
1f6c72fe | 41 | struct commit *lookup_commit_reference(struct repository *r, const struct object_id *oid) |
f76412ed | 42 | { |
1f6c72fe | 43 | return lookup_commit_reference_gently(r, oid, 0); |
961784ee LT |
44 | } |
45 | ||
bc83266a | 46 | struct commit *lookup_commit_or_die(const struct object_id *oid, const char *ref_name) |
baf18fc2 | 47 | { |
2122f675 | 48 | struct commit *c = lookup_commit_reference(the_repository, oid); |
baf18fc2 NTND |
49 | if (!c) |
50 | die(_("could not parse %s"), ref_name); | |
9001dc2a | 51 | if (!oideq(oid, &c->object.oid)) { |
baf18fc2 | 52 | warning(_("%s %s is not a commit!"), |
bc83266a | 53 | ref_name, oid_to_hex(oid)); |
baf18fc2 NTND |
54 | } |
55 | return c; | |
56 | } | |
57 | ||
bacf1687 | 58 | struct commit *lookup_commit(struct repository *r, const struct object_id *oid) |
175785e5 | 59 | { |
d0229abd | 60 | struct object *obj = lookup_object(r, oid); |
d36f51c1 | 61 | if (!obj) |
a378509e | 62 | return create_object(r, oid, alloc_commit_node(r)); |
bacf1687 | 63 | return object_as_type(r, obj, OBJ_COMMIT, 0); |
175785e5 DB |
64 | } |
65 | ||
a6fa5992 PN |
66 | struct commit *lookup_commit_reference_by_name(const char *name) |
67 | { | |
7683e2e6 | 68 | struct object_id oid; |
a6fa5992 PN |
69 | struct commit *commit; |
70 | ||
e82caf38 | 71 | if (get_oid_committish(name, &oid)) |
a6fa5992 | 72 | return NULL; |
2122f675 | 73 | commit = lookup_commit_reference(the_repository, &oid); |
5e7d4d3e | 74 | if (parse_commit(commit)) |
a6fa5992 PN |
75 | return NULL; |
76 | return commit; | |
77 | } | |
78 | ||
dddbad72 | 79 | static timestamp_t parse_commit_date(const char *buf, const char *tail) |
175785e5 | 80 | { |
0a617799 | 81 | const char *dateptr; |
175785e5 | 82 | |
0a617799 MK |
83 | if (buf + 6 >= tail) |
84 | return 0; | |
175785e5 DB |
85 | if (memcmp(buf, "author", 6)) |
86 | return 0; | |
0a617799 | 87 | while (buf < tail && *buf++ != '\n') |
175785e5 | 88 | /* nada */; |
0a617799 MK |
89 | if (buf + 9 >= tail) |
90 | return 0; | |
175785e5 DB |
91 | if (memcmp(buf, "committer", 9)) |
92 | return 0; | |
0a617799 | 93 | while (buf < tail && *buf++ != '>') |
175785e5 | 94 | /* nada */; |
0a617799 MK |
95 | if (buf >= tail) |
96 | return 0; | |
97 | dateptr = buf; | |
98 | while (buf < tail && *buf++ != '\n') | |
99 | /* nada */; | |
100 | if (buf >= tail) | |
101 | return 0; | |
1aeb7e75 JS |
102 | /* dateptr < buf && buf[-1] == '\n', so parsing will stop at buf-1 */ |
103 | return parse_timestamp(dateptr, NULL, 10); | |
175785e5 DB |
104 | } |
105 | ||
0a9136f3 DD |
106 | static const unsigned char *commit_graft_sha1_access(size_t index, void *table) |
107 | { | |
108 | struct commit_graft **commit_graft_table = table; | |
7683e2e6 | 109 | return commit_graft_table[index]->oid.hash; |
0a9136f3 DD |
110 | } |
111 | ||
e808656c | 112 | static int commit_graft_pos(struct repository *r, const unsigned char *sha1) |
5da5c8f4 | 113 | { |
e808656c BW |
114 | return sha1_pos(sha1, r->parsed_objects->grafts, |
115 | r->parsed_objects->grafts_nr, | |
0a9136f3 | 116 | commit_graft_sha1_access); |
5da5c8f4 JH |
117 | } |
118 | ||
a3b78e83 BW |
119 | int register_commit_graft(struct repository *r, struct commit_graft *graft, |
120 | int ignore_dups) | |
5040f17e | 121 | { |
a3b78e83 | 122 | int pos = commit_graft_pos(r, graft->oid.hash); |
a6080a0a | 123 | |
5040f17e JH |
124 | if (0 <= pos) { |
125 | if (ignore_dups) | |
126 | free(graft); | |
127 | else { | |
a3b78e83 BW |
128 | free(r->parsed_objects->grafts[pos]); |
129 | r->parsed_objects->grafts[pos] = graft; | |
5040f17e JH |
130 | } |
131 | return 1; | |
132 | } | |
133 | pos = -pos - 1; | |
a3b78e83 BW |
134 | ALLOC_GROW(r->parsed_objects->grafts, |
135 | r->parsed_objects->grafts_nr + 1, | |
136 | r->parsed_objects->grafts_alloc); | |
137 | r->parsed_objects->grafts_nr++; | |
138 | if (pos < r->parsed_objects->grafts_nr) | |
139 | memmove(r->parsed_objects->grafts + pos + 1, | |
140 | r->parsed_objects->grafts + pos, | |
141 | (r->parsed_objects->grafts_nr - pos - 1) * | |
142 | sizeof(*r->parsed_objects->grafts)); | |
143 | r->parsed_objects->grafts[pos] = graft; | |
5040f17e JH |
144 | return 0; |
145 | } | |
146 | ||
9a934032 | 147 | struct commit_graft *read_graft_line(struct strbuf *line) |
5040f17e JH |
148 | { |
149 | /* The format is just "Commit Parent1 Parent2 ...\n" */ | |
cfa5bf16 PO |
150 | int i, phase; |
151 | const char *tail = NULL; | |
5040f17e | 152 | struct commit_graft *graft = NULL; |
cfa5bf16 | 153 | struct object_id dummy_oid, *oid; |
5040f17e | 154 | |
9a934032 PO |
155 | strbuf_rtrim(line); |
156 | if (!line->len || line->buf[0] == '#') | |
5bc4ce58 | 157 | return NULL; |
cfa5bf16 PO |
158 | /* |
159 | * phase 0 verifies line, counts hashes in line and allocates graft | |
160 | * phase 1 fills graft | |
161 | */ | |
162 | for (phase = 0; phase < 2; phase++) { | |
163 | oid = graft ? &graft->oid : &dummy_oid; | |
164 | if (parse_oid_hex(line->buf, oid, &tail)) | |
5040f17e | 165 | goto bad_graft_data; |
cfa5bf16 PO |
166 | for (i = 0; *tail != '\0'; i++) { |
167 | oid = graft ? &graft->parent[i] : &dummy_oid; | |
168 | if (!isspace(*tail++) || parse_oid_hex(tail, oid, &tail)) | |
169 | goto bad_graft_data; | |
170 | } | |
171 | if (!graft) { | |
172 | graft = xmalloc(st_add(sizeof(*graft), | |
173 | st_mult(sizeof(struct object_id), i))); | |
174 | graft->nr_parent = i; | |
175 | } | |
5040f17e JH |
176 | } |
177 | return graft; | |
df5d43be RT |
178 | |
179 | bad_graft_data: | |
9a934032 | 180 | error("bad graft data: %s", line->buf); |
cfa5bf16 | 181 | assert(!graft); |
df5d43be | 182 | return NULL; |
5040f17e JH |
183 | } |
184 | ||
d0e5dd0e | 185 | static int read_graft_file(struct repository *r, const char *graft_file) |
5da5c8f4 | 186 | { |
e9d983f1 | 187 | FILE *fp = fopen_or_warn(graft_file, "r"); |
e228c173 | 188 | struct strbuf buf = STRBUF_INIT; |
5040f17e JH |
189 | if (!fp) |
190 | return -1; | |
f9f99b3f JS |
191 | if (advice_graft_file_deprecated) |
192 | advise(_("Support for <GIT_DIR>/info/grafts is deprecated\n" | |
193 | "and will be removed in a future Git version.\n" | |
194 | "\n" | |
195 | "Please use \"git replace --convert-graft-file\"\n" | |
196 | "to convert the grafts into replace refs.\n" | |
197 | "\n" | |
198 | "Turn this message off by running\n" | |
199 | "\"git config advice.graftFileDeprecated false\"")); | |
e228c173 | 200 | while (!strbuf_getwholeline(&buf, fp, '\n')) { |
5da5c8f4 | 201 | /* The format is just "Commit Parent1 Parent2 ...\n" */ |
9a934032 | 202 | struct commit_graft *graft = read_graft_line(&buf); |
5bc4ce58 JH |
203 | if (!graft) |
204 | continue; | |
d0e5dd0e | 205 | if (register_commit_graft(r, graft, 1)) |
e228c173 | 206 | error("duplicate graft data: %s", buf.buf); |
5da5c8f4 JH |
207 | } |
208 | fclose(fp); | |
e228c173 | 209 | strbuf_release(&buf); |
5040f17e JH |
210 | return 0; |
211 | } | |
212 | ||
20fd6d57 | 213 | void prepare_commit_graft(struct repository *r) |
5040f17e | 214 | { |
5040f17e JH |
215 | char *graft_file; |
216 | ||
2f6c767f | 217 | if (r->parsed_objects->commit_graft_prepared) |
5040f17e | 218 | return; |
14a9bd28 JK |
219 | if (!startup_info->have_repository) |
220 | return; | |
221 | ||
2f6c767f SB |
222 | graft_file = get_graft_file(r); |
223 | read_graft_file(r, graft_file); | |
ed09aef0 | 224 | /* make sure shallows are read */ |
2f6c767f SB |
225 | is_repository_shallow(r); |
226 | r->parsed_objects->commit_graft_prepared = 1; | |
5da5c8f4 JH |
227 | } |
228 | ||
b9dbddf6 | 229 | struct commit_graft *lookup_commit_graft(struct repository *r, const struct object_id *oid) |
5da5c8f4 JH |
230 | { |
231 | int pos; | |
b9dbddf6 SB |
232 | prepare_commit_graft(r); |
233 | pos = commit_graft_pos(r, oid->hash); | |
5da5c8f4 JH |
234 | if (pos < 0) |
235 | return NULL; | |
b9dbddf6 | 236 | return r->parsed_objects->grafts[pos]; |
5da5c8f4 JH |
237 | } |
238 | ||
09d46644 | 239 | int for_each_commit_graft(each_commit_graft_fn fn, void *cb_data) |
ed09aef0 | 240 | { |
09d46644 | 241 | int i, ret; |
6a1a79fd JN |
242 | for (i = ret = 0; i < the_repository->parsed_objects->grafts_nr && !ret; i++) |
243 | ret = fn(the_repository->parsed_objects->grafts[i], cb_data); | |
09d46644 | 244 | return ret; |
ed09aef0 JS |
245 | } |
246 | ||
e92b848c | 247 | int unregister_shallow(const struct object_id *oid) |
f53514bc | 248 | { |
be479e80 | 249 | int pos = commit_graft_pos(the_repository, oid->hash); |
f53514bc JS |
250 | if (pos < 0) |
251 | return -1; | |
6a1a79fd JN |
252 | if (pos + 1 < the_repository->parsed_objects->grafts_nr) |
253 | MOVE_ARRAY(the_repository->parsed_objects->grafts + pos, | |
254 | the_repository->parsed_objects->grafts + pos + 1, | |
255 | the_repository->parsed_objects->grafts_nr - pos - 1); | |
256 | the_repository->parsed_objects->grafts_nr--; | |
f53514bc JS |
257 | return 0; |
258 | } | |
259 | ||
8597ea3a JK |
260 | struct commit_buffer { |
261 | void *buffer; | |
262 | unsigned long size; | |
263 | }; | |
264 | define_commit_slab(buffer_slab, struct commit_buffer); | |
c1b3c71f | 265 | |
65ea9d4b | 266 | struct buffer_slab *allocate_commit_buffer_slab(void) |
66c2827e | 267 | { |
65ea9d4b SB |
268 | struct buffer_slab *bs = xmalloc(sizeof(*bs)); |
269 | init_buffer_slab(bs); | |
270 | return bs; | |
271 | } | |
272 | ||
273 | void free_commit_buffer_slab(struct buffer_slab *bs) | |
274 | { | |
275 | clear_buffer_slab(bs); | |
276 | free(bs); | |
277 | } | |
c1b3c71f | 278 | |
1a40fc45 | 279 | void set_commit_buffer(struct repository *r, struct commit *commit, void *buffer, unsigned long size) |
66c2827e | 280 | { |
65ea9d4b | 281 | struct commit_buffer *v = buffer_slab_at( |
1a40fc45 | 282 | r->parsed_objects->buffer_slab, commit); |
8597ea3a JK |
283 | v->buffer = buffer; |
284 | v->size = size; | |
66c2827e JK |
285 | } |
286 | ||
4ff7e5c9 | 287 | const void *get_cached_commit_buffer(struct repository *r, const struct commit *commit, unsigned long *sizep) |
152ff1cc | 288 | { |
65ea9d4b | 289 | struct commit_buffer *v = buffer_slab_peek( |
4ff7e5c9 | 290 | r->parsed_objects->buffer_slab, commit); |
862e730e JH |
291 | if (!v) { |
292 | if (sizep) | |
293 | *sizep = 0; | |
294 | return NULL; | |
295 | } | |
8597ea3a JK |
296 | if (sizep) |
297 | *sizep = v->size; | |
298 | return v->buffer; | |
152ff1cc JK |
299 | } |
300 | ||
07de3fd8 SB |
301 | const void *repo_get_commit_buffer(struct repository *r, |
302 | const struct commit *commit, | |
303 | unsigned long *sizep) | |
152ff1cc | 304 | { |
07de3fd8 | 305 | const void *ret = get_cached_commit_buffer(r, commit, sizep); |
152ff1cc JK |
306 | if (!ret) { |
307 | enum object_type type; | |
308 | unsigned long size; | |
07de3fd8 | 309 | ret = repo_read_object_file(r, &commit->object.oid, &type, &size); |
152ff1cc JK |
310 | if (!ret) |
311 | die("cannot read commit object %s", | |
f2fd0760 | 312 | oid_to_hex(&commit->object.oid)); |
152ff1cc JK |
313 | if (type != OBJ_COMMIT) |
314 | die("expected commit for %s, got %s", | |
debca9d2 | 315 | oid_to_hex(&commit->object.oid), type_name(type)); |
8597ea3a JK |
316 | if (sizep) |
317 | *sizep = size; | |
152ff1cc JK |
318 | } |
319 | return ret; | |
320 | } | |
321 | ||
70315373 SB |
322 | void repo_unuse_commit_buffer(struct repository *r, |
323 | const struct commit *commit, | |
324 | const void *buffer) | |
152ff1cc | 325 | { |
65ea9d4b | 326 | struct commit_buffer *v = buffer_slab_peek( |
70315373 | 327 | r->parsed_objects->buffer_slab, commit); |
862e730e | 328 | if (!(v && v->buffer == buffer)) |
152ff1cc JK |
329 | free((void *)buffer); |
330 | } | |
331 | ||
6a7895fd | 332 | void free_commit_buffer(struct parsed_object_pool *pool, struct commit *commit) |
0fb370da | 333 | { |
65ea9d4b | 334 | struct commit_buffer *v = buffer_slab_peek( |
6a7895fd | 335 | pool->buffer_slab, commit); |
862e730e | 336 | if (v) { |
6a83d902 | 337 | FREE_AND_NULL(v->buffer); |
862e730e JH |
338 | v->size = 0; |
339 | } | |
0fb370da JK |
340 | } |
341 | ||
a133c40b NTND |
342 | static inline void set_commit_tree(struct commit *c, struct tree *t) |
343 | { | |
344 | c->maybe_tree = t; | |
345 | } | |
346 | ||
301b8c7f NTND |
347 | struct tree *repo_get_commit_tree(struct repository *r, |
348 | const struct commit *commit) | |
5bb03de1 | 349 | { |
7b8a21db DS |
350 | if (commit->maybe_tree || !commit->object.parsed) |
351 | return commit->maybe_tree; | |
352 | ||
83487663 | 353 | if (commit->graph_pos != COMMIT_NOT_FROM_GRAPH) |
ea2dab1a | 354 | return get_commit_tree_in_graph(r, commit); |
7b8a21db | 355 | |
83487663 | 356 | return NULL; |
5bb03de1 DS |
357 | } |
358 | ||
359 | struct object_id *get_commit_tree_oid(const struct commit *commit) | |
360 | { | |
806278de TB |
361 | struct tree *tree = get_commit_tree(commit); |
362 | return tree ? &tree->object.oid : NULL; | |
5bb03de1 DS |
363 | } |
364 | ||
6a7895fd | 365 | void release_commit_memory(struct parsed_object_pool *pool, struct commit *c) |
14ba97f8 | 366 | { |
a133c40b | 367 | set_commit_tree(c, NULL); |
6a7895fd | 368 | free_commit_buffer(pool, c); |
9784f973 | 369 | c->index = 0; |
14ba97f8 | 370 | free_commit_list(c->parents); |
14ba97f8 SB |
371 | |
372 | c->object.parsed = 0; | |
373 | } | |
374 | ||
8597ea3a | 375 | const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep) |
0fb370da | 376 | { |
65ea9d4b SB |
377 | struct commit_buffer *v = buffer_slab_peek( |
378 | the_repository->parsed_objects->buffer_slab, commit); | |
8597ea3a JK |
379 | void *ret; |
380 | ||
862e730e JH |
381 | if (!v) { |
382 | if (sizep) | |
383 | *sizep = 0; | |
384 | return NULL; | |
385 | } | |
8597ea3a JK |
386 | ret = v->buffer; |
387 | if (sizep) | |
388 | *sizep = v->size; | |
389 | ||
390 | v->buffer = NULL; | |
391 | v->size = 0; | |
0fb370da JK |
392 | return ret; |
393 | } | |
394 | ||
fd8030c7 | 395 | int parse_commit_buffer(struct repository *r, struct commit *item, const void *buffer, unsigned long size, int check_graph) |
175785e5 | 396 | { |
cf7b1cad NTND |
397 | const char *tail = buffer; |
398 | const char *bufptr = buffer; | |
7683e2e6 | 399 | struct object_id parent; |
6c88be16 | 400 | struct commit_list **pptr; |
5da5c8f4 | 401 | struct commit_graft *graft; |
2770ccbd | 402 | const int tree_entry_len = the_hash_algo->hexsz + 5; |
403 | const int parent_entry_len = the_hash_algo->hexsz + 7; | |
12736d2f | 404 | struct tree *tree; |
bd2c39f5 | 405 | |
175785e5 DB |
406 | if (item->object.parsed) |
407 | return 0; | |
408 | item->object.parsed = 1; | |
3b44f15a | 409 | tail += size; |
7683e2e6 | 410 | if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) || |
411 | bufptr[tree_entry_len] != '\n') | |
f2fd0760 | 412 | return error("bogus commit object %s", oid_to_hex(&item->object.oid)); |
26ea3e7d | 413 | if (get_oid_hex(bufptr + 5, &parent) < 0) |
bd2afde8 | 414 | return error("bad tree pointer in commit %s", |
f2fd0760 | 415 | oid_to_hex(&item->object.oid)); |
12736d2f JK |
416 | tree = lookup_tree(r, &parent); |
417 | if (!tree) | |
418 | return error("bad tree pointer %s in commit %s", | |
419 | oid_to_hex(&parent), | |
420 | oid_to_hex(&item->object.oid)); | |
421 | set_commit_tree(item, tree); | |
7683e2e6 | 422 | bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */ |
6c88be16 | 423 | pptr = &item->parents; |
5da5c8f4 | 424 | |
fd8030c7 | 425 | graft = lookup_commit_graft(r, &item->object.oid); |
7683e2e6 | 426 | while (bufptr + parent_entry_len < tail && !memcmp(bufptr, "parent ", 7)) { |
f7cc77d7 LT |
427 | struct commit *new_parent; |
428 | ||
7683e2e6 | 429 | if (tail <= bufptr + parent_entry_len + 1 || |
26ea3e7d | 430 | get_oid_hex(bufptr + 7, &parent) || |
7683e2e6 | 431 | bufptr[parent_entry_len] != '\n') |
f2fd0760 | 432 | return error("bad parents in commit %s", oid_to_hex(&item->object.oid)); |
7683e2e6 | 433 | bufptr += parent_entry_len + 1; |
7f3140cd JS |
434 | /* |
435 | * The clone is shallow if nr_parent < 0, and we must | |
436 | * not traverse its real parents even when we unhide them. | |
437 | */ | |
438 | if (graft && (graft->nr_parent < 0 || grafts_replace_parents)) | |
5da5c8f4 | 439 | continue; |
fd8030c7 | 440 | new_parent = lookup_commit(r, &parent); |
c78fe004 JK |
441 | if (!new_parent) |
442 | return error("bad parent %s in commit %s", | |
443 | oid_to_hex(&parent), | |
444 | oid_to_hex(&item->object.oid)); | |
445 | pptr = &commit_list_insert(new_parent, pptr)->next; | |
5da5c8f4 JH |
446 | } |
447 | if (graft) { | |
448 | int i; | |
449 | struct commit *new_parent; | |
450 | for (i = 0; i < graft->nr_parent; i++) { | |
fd8030c7 | 451 | new_parent = lookup_commit(r, |
c1f5eb49 | 452 | &graft->parent[i]); |
5da5c8f4 | 453 | if (!new_parent) |
c78fe004 JK |
454 | return error("bad graft parent %s in commit %s", |
455 | oid_to_hex(&graft->parent[i]), | |
456 | oid_to_hex(&item->object.oid)); | |
5da5c8f4 | 457 | pptr = &commit_list_insert(new_parent, pptr)->next; |
5da5c8f4 | 458 | } |
175785e5 | 459 | } |
0a617799 | 460 | item->date = parse_commit_date(bufptr, tail); |
27dedf0c | 461 | |
e2838d85 | 462 | if (check_graph) |
c7944050 | 463 | load_commit_graph_info(r, item); |
e2838d85 | 464 | |
175785e5 DB |
465 | return 0; |
466 | } | |
467 | ||
9e5252ab SB |
468 | int repo_parse_commit_internal(struct repository *r, |
469 | struct commit *item, | |
470 | int quiet_on_missing, | |
471 | int use_commit_graph) | |
bd2c39f5 | 472 | { |
21666f1a | 473 | enum object_type type; |
bd2c39f5 NP |
474 | void *buffer; |
475 | unsigned long size; | |
476 | int ret; | |
477 | ||
9786f68b MK |
478 | if (!item) |
479 | return -1; | |
bd2c39f5 NP |
480 | if (item->object.parsed) |
481 | return 0; | |
9e5252ab | 482 | if (use_commit_graph && parse_commit_in_graph(r, item)) |
177722b3 | 483 | return 0; |
9e5252ab | 484 | buffer = repo_read_object_file(r, &item->object.oid, &type, &size); |
bd2c39f5 | 485 | if (!buffer) |
9cc2b07a JK |
486 | return quiet_on_missing ? -1 : |
487 | error("Could not read %s", | |
f2fd0760 | 488 | oid_to_hex(&item->object.oid)); |
21666f1a | 489 | if (type != OBJ_COMMIT) { |
bd2c39f5 NP |
490 | free(buffer); |
491 | return error("Object %s not a commit", | |
f2fd0760 | 492 | oid_to_hex(&item->object.oid)); |
bd2c39f5 | 493 | } |
9b19adac | 494 | |
9e5252ab | 495 | ret = parse_commit_buffer(r, item, buffer, size, 0); |
60ab26de | 496 | if (save_commit_buffer && !ret) { |
9e5252ab | 497 | set_commit_buffer(r, item, buffer, size); |
3ff1fbbb LT |
498 | return 0; |
499 | } | |
bd2c39f5 NP |
500 | free(buffer); |
501 | return ret; | |
502 | } | |
503 | ||
9e5252ab SB |
504 | int repo_parse_commit_gently(struct repository *r, |
505 | struct commit *item, int quiet_on_missing) | |
9b19adac | 506 | { |
9e5252ab | 507 | return repo_parse_commit_internal(r, item, quiet_on_missing, 1); |
9b19adac DS |
508 | } |
509 | ||
7059dccc JK |
510 | void parse_commit_or_die(struct commit *item) |
511 | { | |
512 | if (parse_commit(item)) | |
513 | die("unable to parse commit %s", | |
f2fd0760 | 514 | item ? oid_to_hex(&item->object.oid) : "(null)"); |
7059dccc JK |
515 | } |
516 | ||
11af2aae CC |
517 | int find_commit_subject(const char *commit_buffer, const char **subject) |
518 | { | |
519 | const char *eol; | |
520 | const char *p = commit_buffer; | |
521 | ||
522 | while (*p && (*p != '\n' || p[1] != '\n')) | |
523 | p++; | |
524 | if (*p) { | |
4e1b06da | 525 | p = skip_blank_lines(p + 2); |
9c9b03b1 | 526 | eol = strchrnul(p, '\n'); |
11af2aae CC |
527 | } else |
528 | eol = p; | |
529 | ||
530 | *subject = p; | |
531 | ||
532 | return eol - p; | |
533 | } | |
534 | ||
ac5155ef | 535 | struct commit_list *commit_list_insert(struct commit *item, struct commit_list **list_p) |
dd97f850 | 536 | { |
812666c8 | 537 | struct commit_list *new_list = xmalloc(sizeof(struct commit_list)); |
dd97f850 DB |
538 | new_list->item = item; |
539 | new_list->next = *list_p; | |
540 | *list_p = new_list; | |
ac5155ef | 541 | return new_list; |
dd97f850 DB |
542 | } |
543 | ||
65319475 MV |
544 | unsigned commit_list_count(const struct commit_list *l) |
545 | { | |
546 | unsigned c = 0; | |
547 | for (; l; l = l->next ) | |
548 | c++; | |
549 | return c; | |
550 | } | |
551 | ||
53d00b39 TR |
552 | struct commit_list *copy_commit_list(struct commit_list *list) |
553 | { | |
554 | struct commit_list *head = NULL; | |
555 | struct commit_list **pp = &head; | |
556 | while (list) { | |
cb979dbd | 557 | pp = commit_list_append(list->item, pp); |
53d00b39 TR |
558 | list = list->next; |
559 | } | |
560 | return head; | |
561 | } | |
562 | ||
175785e5 DB |
563 | void free_commit_list(struct commit_list *list) |
564 | { | |
e510ab89 RS |
565 | while (list) |
566 | pop_commit(&list); | |
175785e5 | 567 | } |
dd97f850 | 568 | |
47e44ed1 | 569 | struct commit_list * commit_list_insert_by_date(struct commit *item, struct commit_list **list) |
dd97f850 DB |
570 | { |
571 | struct commit_list **pp = list; | |
572 | struct commit_list *p; | |
573 | while ((p = *pp) != NULL) { | |
574 | if (p->item->date < item->date) { | |
575 | break; | |
576 | } | |
577 | pp = &p->next; | |
578 | } | |
f755494c | 579 | return commit_list_insert(item, pp); |
dd97f850 DB |
580 | } |
581 | ||
46905893 RS |
582 | static int commit_list_compare_by_date(const void *a, const void *b) |
583 | { | |
dddbad72 JS |
584 | timestamp_t a_date = ((const struct commit_list *)a)->item->date; |
585 | timestamp_t b_date = ((const struct commit_list *)b)->item->date; | |
46905893 RS |
586 | if (a_date < b_date) |
587 | return 1; | |
588 | if (a_date > b_date) | |
589 | return -1; | |
590 | return 0; | |
591 | } | |
592 | ||
593 | static void *commit_list_get_next(const void *a) | |
594 | { | |
595 | return ((const struct commit_list *)a)->next; | |
596 | } | |
597 | ||
598 | static void commit_list_set_next(void *a, void *next) | |
599 | { | |
600 | ((struct commit_list *)a)->next = next; | |
601 | } | |
a6080a0a | 602 | |
47e44ed1 | 603 | void commit_list_sort_by_date(struct commit_list **list) |
dd97f850 | 604 | { |
7365c95d JH |
605 | *list = llist_mergesort(*list, commit_list_get_next, commit_list_set_next, |
606 | commit_list_compare_by_date); | |
dd97f850 DB |
607 | } |
608 | ||
58e28af6 DB |
609 | struct commit *pop_most_recent_commit(struct commit_list **list, |
610 | unsigned int mark) | |
dd97f850 | 611 | { |
e510ab89 | 612 | struct commit *ret = pop_commit(list); |
dd97f850 | 613 | struct commit_list *parents = ret->parents; |
dd97f850 DB |
614 | |
615 | while (parents) { | |
4056c091 | 616 | struct commit *commit = parents->item; |
dec38c81 | 617 | if (!parse_commit(commit) && !(commit->object.flags & mark)) { |
58e28af6 | 618 | commit->object.flags |= mark; |
47e44ed1 | 619 | commit_list_insert_by_date(commit, list); |
4056c091 | 620 | } |
dd97f850 DB |
621 | parents = parents->next; |
622 | } | |
623 | return ret; | |
624 | } | |
e3bc7a3b | 625 | |
941ba8db NTND |
626 | static void clear_commit_marks_1(struct commit_list **plist, |
627 | struct commit *commit, unsigned int mark) | |
f8f9c73c | 628 | { |
60fcc2e6 JS |
629 | while (commit) { |
630 | struct commit_list *parents; | |
f8f9c73c | 631 | |
60fcc2e6 JS |
632 | if (!(mark & commit->object.flags)) |
633 | return; | |
58ecf5c1 | 634 | |
60fcc2e6 JS |
635 | commit->object.flags &= ~mark; |
636 | ||
637 | parents = commit->parents; | |
638 | if (!parents) | |
639 | return; | |
640 | ||
641 | while ((parents = parents->next)) | |
941ba8db | 642 | commit_list_insert(parents->item, plist); |
60fcc2e6 JS |
643 | |
644 | commit = commit->parents->item; | |
f8f9c73c JH |
645 | } |
646 | } | |
647 | ||
e895cb51 | 648 | void clear_commit_marks_many(int nr, struct commit **commit, unsigned int mark) |
941ba8db NTND |
649 | { |
650 | struct commit_list *list = NULL; | |
e895cb51 JH |
651 | |
652 | while (nr--) { | |
07f7d55a | 653 | clear_commit_marks_1(&list, *commit, mark); |
e895cb51 JH |
654 | commit++; |
655 | } | |
941ba8db NTND |
656 | while (list) |
657 | clear_commit_marks_1(&list, pop_commit(&list), mark); | |
658 | } | |
659 | ||
e895cb51 JH |
660 | void clear_commit_marks(struct commit *commit, unsigned int mark) |
661 | { | |
662 | clear_commit_marks_many(1, &commit, mark); | |
663 | } | |
664 | ||
a3437b8c JS |
665 | struct commit *pop_commit(struct commit_list **stack) |
666 | { | |
667 | struct commit_list *top = *stack; | |
668 | struct commit *item = top ? top->item : NULL; | |
669 | ||
670 | if (top) { | |
671 | *stack = top->next; | |
672 | free(top); | |
673 | } | |
674 | return item; | |
675 | } | |
676 | ||
a84b794a JH |
677 | /* |
678 | * Topological sort support | |
679 | */ | |
96c4f4a3 | 680 | |
a84b794a JH |
681 | /* count number of children that have not been emitted */ |
682 | define_commit_slab(indegree_slab, int); | |
96c4f4a3 | 683 | |
18207030 | 684 | define_commit_slab(author_date_slab, timestamp_t); |
81c6b38b | 685 | |
5284fc5c DS |
686 | void record_author_date(struct author_date_slab *author_date, |
687 | struct commit *commit) | |
81c6b38b | 688 | { |
8597ea3a | 689 | const char *buffer = get_commit_buffer(commit, NULL); |
81c6b38b | 690 | struct ident_split ident; |
ea5517f0 JK |
691 | const char *ident_line; |
692 | size_t ident_len; | |
81c6b38b | 693 | char *date_end; |
dddbad72 | 694 | timestamp_t date; |
81c6b38b | 695 | |
ea5517f0 JK |
696 | ident_line = find_commit_header(buffer, "author", &ident_len); |
697 | if (!ident_line) | |
698 | goto fail_exit; /* no author line */ | |
699 | if (split_ident_line(&ident, ident_line, ident_len) || | |
700 | !ident.date_begin || !ident.date_end) | |
701 | goto fail_exit; /* malformed "author" line */ | |
81c6b38b | 702 | |
1aeb7e75 | 703 | date = parse_timestamp(ident.date_begin, &date_end, 10); |
81c6b38b JH |
704 | if (date_end != ident.date_end) |
705 | goto fail_exit; /* malformed date */ | |
706 | *(author_date_slab_at(author_date, commit)) = date; | |
707 | ||
708 | fail_exit: | |
ba41c1c9 | 709 | unuse_commit_buffer(commit, buffer); |
81c6b38b JH |
710 | } |
711 | ||
5284fc5c DS |
712 | int compare_commits_by_author_date(const void *a_, const void *b_, |
713 | void *cb_data) | |
81c6b38b JH |
714 | { |
715 | const struct commit *a = a_, *b = b_; | |
716 | struct author_date_slab *author_date = cb_data; | |
dddbad72 JS |
717 | timestamp_t a_date = *(author_date_slab_at(author_date, a)); |
718 | timestamp_t b_date = *(author_date_slab_at(author_date, b)); | |
81c6b38b JH |
719 | |
720 | /* newer commits with larger date first */ | |
721 | if (a_date < b_date) | |
722 | return 1; | |
723 | else if (a_date > b_date) | |
724 | return -1; | |
725 | return 0; | |
726 | } | |
727 | ||
3afc679b DS |
728 | int compare_commits_by_gen_then_commit_date(const void *a_, const void *b_, void *unused) |
729 | { | |
730 | const struct commit *a = a_, *b = b_; | |
731 | ||
732 | /* newer commits first */ | |
733 | if (a->generation < b->generation) | |
734 | return 1; | |
735 | else if (a->generation > b->generation) | |
736 | return -1; | |
737 | ||
738 | /* use date as a heuristic when generations are equal */ | |
739 | if (a->date < b->date) | |
740 | return 1; | |
741 | else if (a->date > b->date) | |
742 | return -1; | |
743 | return 0; | |
744 | } | |
745 | ||
727377ff | 746 | int compare_commits_by_commit_date(const void *a_, const void *b_, void *unused) |
da24b104 JH |
747 | { |
748 | const struct commit *a = a_, *b = b_; | |
749 | /* newer commits with larger date first */ | |
750 | if (a->date < b->date) | |
751 | return 1; | |
752 | else if (a->date > b->date) | |
753 | return -1; | |
754 | return 0; | |
755 | } | |
756 | ||
ab580ace JS |
757 | /* |
758 | * Performs an in-place topological sort on the list supplied. | |
759 | */ | |
da24b104 | 760 | void sort_in_topological_order(struct commit_list **list, enum rev_sort_order sort_order) |
6b6dcfc2 | 761 | { |
23c17d4a | 762 | struct commit_list *next, *orig = *list; |
23c17d4a | 763 | struct commit_list **pptr; |
a84b794a | 764 | struct indegree_slab indegree; |
da24b104 JH |
765 | struct prio_queue queue; |
766 | struct commit *commit; | |
81c6b38b | 767 | struct author_date_slab author_date; |
a6080a0a | 768 | |
23c17d4a | 769 | if (!orig) |
7d6fb370 | 770 | return; |
23c17d4a LT |
771 | *list = NULL; |
772 | ||
a84b794a | 773 | init_indegree_slab(&indegree); |
da24b104 | 774 | memset(&queue, '\0', sizeof(queue)); |
81c6b38b | 775 | |
da24b104 JH |
776 | switch (sort_order) { |
777 | default: /* REV_SORT_IN_GRAPH_ORDER */ | |
778 | queue.compare = NULL; | |
779 | break; | |
780 | case REV_SORT_BY_COMMIT_DATE: | |
781 | queue.compare = compare_commits_by_commit_date; | |
782 | break; | |
81c6b38b JH |
783 | case REV_SORT_BY_AUTHOR_DATE: |
784 | init_author_date_slab(&author_date); | |
785 | queue.compare = compare_commits_by_author_date; | |
786 | queue.cb_data = &author_date; | |
787 | break; | |
da24b104 | 788 | } |
96c4f4a3 | 789 | |
23c17d4a LT |
790 | /* Mark them and clear the indegree */ |
791 | for (next = orig; next; next = next->next) { | |
792 | struct commit *commit = next->item; | |
a84b794a | 793 | *(indegree_slab_at(&indegree, commit)) = 1; |
81c6b38b JH |
794 | /* also record the author dates, if needed */ |
795 | if (sort_order == REV_SORT_BY_AUTHOR_DATE) | |
796 | record_author_date(&author_date, commit); | |
ab580ace | 797 | } |
23c17d4a | 798 | |
ab580ace | 799 | /* update the indegree */ |
23c17d4a | 800 | for (next = orig; next; next = next->next) { |
da24b104 | 801 | struct commit_list *parents = next->item->parents; |
ab580ace | 802 | while (parents) { |
23c17d4a | 803 | struct commit *parent = parents->item; |
a84b794a | 804 | int *pi = indegree_slab_at(&indegree, parent); |
6b6dcfc2 | 805 | |
96c4f4a3 JK |
806 | if (*pi) |
807 | (*pi)++; | |
23c17d4a | 808 | parents = parents->next; |
ab580ace | 809 | } |
ab580ace | 810 | } |
23c17d4a | 811 | |
a6080a0a | 812 | /* |
674d1727 PH |
813 | * find the tips |
814 | * | |
815 | * tips are nodes not reachable from any other node in the list | |
816 | * | |
817 | * the tips serve as a starting set for the work queue. | |
818 | */ | |
23c17d4a LT |
819 | for (next = orig; next; next = next->next) { |
820 | struct commit *commit = next->item; | |
ab580ace | 821 | |
a84b794a | 822 | if (*(indegree_slab_at(&indegree, commit)) == 1) |
da24b104 | 823 | prio_queue_put(&queue, commit); |
ab580ace | 824 | } |
4c8725f1 | 825 | |
da24b104 JH |
826 | /* |
827 | * This is unfortunate; the initial tips need to be shown | |
828 | * in the order given from the revision traversal machinery. | |
829 | */ | |
830 | if (sort_order == REV_SORT_IN_GRAPH_ORDER) | |
831 | prio_queue_reverse(&queue); | |
832 | ||
833 | /* We no longer need the commit list */ | |
834 | free_commit_list(orig); | |
23c17d4a LT |
835 | |
836 | pptr = list; | |
837 | *list = NULL; | |
da24b104 JH |
838 | while ((commit = prio_queue_get(&queue)) != NULL) { |
839 | struct commit_list *parents; | |
23c17d4a | 840 | |
23c17d4a | 841 | for (parents = commit->parents; parents ; parents = parents->next) { |
cd2b8ae9 | 842 | struct commit *parent = parents->item; |
a84b794a | 843 | int *pi = indegree_slab_at(&indegree, parent); |
23c17d4a | 844 | |
96c4f4a3 | 845 | if (!*pi) |
23c17d4a LT |
846 | continue; |
847 | ||
848 | /* | |
849 | * parents are only enqueued for emission | |
850 | * when all their children have been emitted thereby | |
851 | * guaranteeing topological order. | |
852 | */ | |
da24b104 JH |
853 | if (--(*pi) == 1) |
854 | prio_queue_put(&queue, parent); | |
ab580ace JS |
855 | } |
856 | /* | |
da24b104 JH |
857 | * all children of commit have already been |
858 | * emitted. we can emit it now. | |
674d1727 | 859 | */ |
a84b794a | 860 | *(indegree_slab_at(&indegree, commit)) = 0; |
da24b104 JH |
861 | |
862 | pptr = &commit_list_insert(commit, pptr)->next; | |
ab580ace | 863 | } |
96c4f4a3 | 864 | |
a84b794a | 865 | clear_indegree_slab(&indegree); |
da24b104 | 866 | clear_prio_queue(&queue); |
81c6b38b JH |
867 | if (sort_order == REV_SORT_BY_AUTHOR_DATE) |
868 | clear_author_date_slab(&author_date); | |
ab580ace | 869 | } |
7c6f8aaf | 870 | |
103148aa PK |
871 | struct rev_collect { |
872 | struct commit **commit; | |
873 | int nr; | |
874 | int alloc; | |
875 | unsigned int initial : 1; | |
876 | }; | |
877 | ||
878 | static void add_one_commit(struct object_id *oid, struct rev_collect *revs) | |
879 | { | |
880 | struct commit *commit; | |
881 | ||
882 | if (is_null_oid(oid)) | |
883 | return; | |
884 | ||
885 | commit = lookup_commit(the_repository, oid); | |
886 | if (!commit || | |
887 | (commit->object.flags & TMP_MARK) || | |
888 | parse_commit(commit)) | |
889 | return; | |
890 | ||
891 | ALLOC_GROW(revs->commit, revs->nr + 1, revs->alloc); | |
892 | revs->commit[revs->nr++] = commit; | |
893 | commit->object.flags |= TMP_MARK; | |
894 | } | |
895 | ||
896 | static int collect_one_reflog_ent(struct object_id *ooid, struct object_id *noid, | |
897 | const char *ident, timestamp_t timestamp, | |
898 | int tz, const char *message, void *cbdata) | |
899 | { | |
900 | struct rev_collect *revs = cbdata; | |
901 | ||
902 | if (revs->initial) { | |
903 | revs->initial = 0; | |
904 | add_one_commit(ooid, revs); | |
905 | } | |
906 | add_one_commit(noid, revs); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | struct commit *get_fork_point(const char *refname, struct commit *commit) | |
911 | { | |
912 | struct object_id oid; | |
913 | struct rev_collect revs; | |
914 | struct commit_list *bases; | |
915 | int i; | |
916 | struct commit *ret = NULL; | |
917 | ||
918 | memset(&revs, 0, sizeof(revs)); | |
919 | revs.initial = 1; | |
920 | for_each_reflog_ent(refname, collect_one_reflog_ent, &revs); | |
921 | ||
922 | if (!revs.nr && !get_oid(refname, &oid)) | |
923 | add_one_commit(&oid, &revs); | |
924 | ||
925 | for (i = 0; i < revs.nr; i++) | |
926 | revs.commit[i]->object.flags &= ~TMP_MARK; | |
927 | ||
928 | bases = get_merge_bases_many(commit, revs.nr, revs.commit); | |
929 | ||
930 | /* | |
931 | * There should be one and only one merge base, when we found | |
932 | * a common ancestor among reflog entries. | |
933 | */ | |
934 | if (!bases || bases->next) | |
935 | goto cleanup_return; | |
936 | ||
937 | /* And the found one must be one of the reflog entries */ | |
938 | for (i = 0; i < revs.nr; i++) | |
939 | if (&bases->item->object == &revs.commit[i]->object) | |
940 | break; /* found */ | |
941 | if (revs.nr <= i) | |
942 | goto cleanup_return; | |
943 | ||
944 | ret = bases->item; | |
945 | ||
946 | cleanup_return: | |
947 | free_commit_list(bases); | |
948 | return ret; | |
949 | } | |
950 | ||
ba3c69a9 JH |
951 | static const char gpg_sig_header[] = "gpgsig"; |
952 | static const int gpg_sig_header_len = sizeof(gpg_sig_header) - 1; | |
953 | ||
954 | static int do_sign_commit(struct strbuf *buf, const char *keyid) | |
955 | { | |
956 | struct strbuf sig = STRBUF_INIT; | |
957 | int inspos, copypos; | |
3324dd8f | 958 | const char *eoh; |
ba3c69a9 JH |
959 | |
960 | /* find the end of the header */ | |
3324dd8f JS |
961 | eoh = strstr(buf->buf, "\n\n"); |
962 | if (!eoh) | |
963 | inspos = buf->len; | |
964 | else | |
965 | inspos = eoh - buf->buf + 1; | |
ba3c69a9 JH |
966 | |
967 | if (!keyid || !*keyid) | |
968 | keyid = get_signing_key(); | |
969 | if (sign_buffer(buf, &sig, keyid)) { | |
970 | strbuf_release(&sig); | |
971 | return -1; | |
972 | } | |
973 | ||
974 | for (copypos = 0; sig.buf[copypos]; ) { | |
975 | const char *bol = sig.buf + copypos; | |
976 | const char *eol = strchrnul(bol, '\n'); | |
977 | int len = (eol - bol) + !!*eol; | |
978 | ||
979 | if (!copypos) { | |
980 | strbuf_insert(buf, inspos, gpg_sig_header, gpg_sig_header_len); | |
981 | inspos += gpg_sig_header_len; | |
982 | } | |
983 | strbuf_insert(buf, inspos++, " ", 1); | |
984 | strbuf_insert(buf, inspos, bol, len); | |
985 | inspos += len; | |
986 | copypos += len; | |
987 | } | |
988 | strbuf_release(&sig); | |
989 | return 0; | |
990 | } | |
991 | ||
218aa3a6 | 992 | int parse_signed_commit(const struct commit *commit, |
0c37f1fc JH |
993 | struct strbuf *payload, struct strbuf *signature) |
994 | { | |
218aa3a6 | 995 | |
0c37f1fc | 996 | unsigned long size; |
218aa3a6 | 997 | const char *buffer = get_commit_buffer(commit, &size); |
0c37f1fc | 998 | int in_signature, saw_signature = -1; |
218aa3a6 | 999 | const char *line, *tail; |
0c37f1fc JH |
1000 | |
1001 | line = buffer; | |
1002 | tail = buffer + size; | |
1003 | in_signature = 0; | |
1004 | saw_signature = 0; | |
1005 | while (line < tail) { | |
1006 | const char *sig = NULL; | |
218aa3a6 | 1007 | const char *next = memchr(line, '\n', tail - line); |
0c37f1fc JH |
1008 | |
1009 | next = next ? next + 1 : tail; | |
1010 | if (in_signature && line[0] == ' ') | |
1011 | sig = line + 1; | |
59556548 | 1012 | else if (starts_with(line, gpg_sig_header) && |
0c37f1fc JH |
1013 | line[gpg_sig_header_len] == ' ') |
1014 | sig = line + gpg_sig_header_len + 1; | |
1015 | if (sig) { | |
1016 | strbuf_add(signature, sig, next - sig); | |
1017 | saw_signature = 1; | |
1018 | in_signature = 1; | |
1019 | } else { | |
1020 | if (*line == '\n') | |
1021 | /* dump the whole remainder of the buffer */ | |
1022 | next = tail; | |
1023 | strbuf_add(payload, line, next - line); | |
1024 | in_signature = 0; | |
1025 | } | |
1026 | line = next; | |
1027 | } | |
218aa3a6 | 1028 | unuse_commit_buffer(commit, buffer); |
0c37f1fc JH |
1029 | return saw_signature; |
1030 | } | |
1031 | ||
0b05ab6f CC |
1032 | int remove_signature(struct strbuf *buf) |
1033 | { | |
1034 | const char *line = buf->buf; | |
1035 | const char *tail = buf->buf + buf->len; | |
1036 | int in_signature = 0; | |
1037 | const char *sig_start = NULL; | |
1038 | const char *sig_end = NULL; | |
1039 | ||
1040 | while (line < tail) { | |
1041 | const char *next = memchr(line, '\n', tail - line); | |
1042 | next = next ? next + 1 : tail; | |
1043 | ||
1044 | if (in_signature && line[0] == ' ') | |
1045 | sig_end = next; | |
1046 | else if (starts_with(line, gpg_sig_header) && | |
1047 | line[gpg_sig_header_len] == ' ') { | |
1048 | sig_start = line; | |
1049 | sig_end = next; | |
1050 | in_signature = 1; | |
1051 | } else { | |
1052 | if (*line == '\n') | |
1053 | /* dump the whole remainder of the buffer */ | |
1054 | next = tail; | |
1055 | in_signature = 0; | |
1056 | } | |
1057 | line = next; | |
1058 | } | |
1059 | ||
1060 | if (sig_start) | |
1061 | strbuf_remove(buf, sig_start - buf->buf, sig_end - sig_start); | |
1062 | ||
1063 | return sig_start != NULL; | |
1064 | } | |
1065 | ||
5231c633 JH |
1066 | static void handle_signed_tag(struct commit *parent, struct commit_extra_header ***tail) |
1067 | { | |
1068 | struct merge_remote_desc *desc; | |
1069 | struct commit_extra_header *mergetag; | |
1070 | char *buf; | |
1071 | unsigned long size, len; | |
1072 | enum object_type type; | |
1073 | ||
1074 | desc = merge_remote_util(parent); | |
1075 | if (!desc || !desc->obj) | |
1076 | return; | |
b4f5aca4 | 1077 | buf = read_object_file(&desc->obj->oid, &type, &size); |
5231c633 JH |
1078 | if (!buf || type != OBJ_TAG) |
1079 | goto free_return; | |
1080 | len = parse_signature(buf, size); | |
1081 | if (size == len) | |
1082 | goto free_return; | |
1083 | /* | |
1084 | * We could verify this signature and either omit the tag when | |
1085 | * it does not validate, but the integrator may not have the | |
1086 | * public key of the signer of the tag he is merging, while a | |
1087 | * later auditor may have it while auditing, so let's not run | |
1088 | * verify-signed-buffer here for now... | |
1089 | * | |
1090 | * if (verify_signed_buffer(buf, len, buf + len, size - len, ...)) | |
1091 | * warn("warning: signed tag unverified."); | |
1092 | */ | |
1093 | mergetag = xcalloc(1, sizeof(*mergetag)); | |
1094 | mergetag->key = xstrdup("mergetag"); | |
1095 | mergetag->value = buf; | |
1096 | mergetag->len = size; | |
1097 | ||
1098 | **tail = mergetag; | |
1099 | *tail = &mergetag->next; | |
1100 | return; | |
1101 | ||
1102 | free_return: | |
1103 | free(buf); | |
1104 | } | |
1105 | ||
434060ec | 1106 | int check_commit_signature(const struct commit *commit, struct signature_check *sigc) |
ffb6d7d5 SG |
1107 | { |
1108 | struct strbuf payload = STRBUF_INIT; | |
1109 | struct strbuf signature = STRBUF_INIT; | |
434060ec | 1110 | int ret = 1; |
ffb6d7d5 SG |
1111 | |
1112 | sigc->result = 'N'; | |
1113 | ||
218aa3a6 | 1114 | if (parse_signed_commit(commit, &payload, &signature) <= 0) |
ffb6d7d5 | 1115 | goto out; |
434060ec | 1116 | ret = check_signature(payload.buf, payload.len, signature.buf, |
1117 | signature.len, sigc); | |
ffb6d7d5 SG |
1118 | |
1119 | out: | |
ffb6d7d5 SG |
1120 | strbuf_release(&payload); |
1121 | strbuf_release(&signature); | |
434060ec | 1122 | |
1123 | return ret; | |
ffb6d7d5 SG |
1124 | } |
1125 | ||
edc4d47d JK |
1126 | void verify_merge_signature(struct commit *commit, int verbosity) |
1127 | { | |
1128 | char hex[GIT_MAX_HEXSZ + 1]; | |
1129 | struct signature_check signature_check; | |
1130 | memset(&signature_check, 0, sizeof(signature_check)); | |
1131 | ||
1132 | check_commit_signature(commit, &signature_check); | |
1133 | ||
1134 | find_unique_abbrev_r(hex, &commit->object.oid, DEFAULT_ABBREV); | |
1135 | switch (signature_check.result) { | |
1136 | case 'G': | |
1137 | break; | |
1138 | case 'U': | |
1139 | die(_("Commit %s has an untrusted GPG signature, " | |
1140 | "allegedly by %s."), hex, signature_check.signer); | |
1141 | case 'B': | |
1142 | die(_("Commit %s has a bad GPG signature " | |
1143 | "allegedly by %s."), hex, signature_check.signer); | |
1144 | default: /* 'N' */ | |
1145 | die(_("Commit %s does not have a GPG signature."), hex); | |
1146 | } | |
1147 | if (verbosity >= 0 && signature_check.result == 'G') | |
1148 | printf(_("Commit %s has a good GPG signature by %s\n"), | |
1149 | hex, signature_check.signer); | |
ffb6d7d5 | 1150 | |
edc4d47d JK |
1151 | signature_check_clear(&signature_check); |
1152 | } | |
ffb6d7d5 | 1153 | |
5231c633 JH |
1154 | void append_merge_tag_headers(struct commit_list *parents, |
1155 | struct commit_extra_header ***tail) | |
1156 | { | |
1157 | while (parents) { | |
1158 | struct commit *parent = parents->item; | |
1159 | handle_signed_tag(parent, tail); | |
1160 | parents = parents->next; | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | static void add_extra_header(struct strbuf *buffer, | |
1165 | struct commit_extra_header *extra) | |
1166 | { | |
1167 | strbuf_addstr(buffer, extra->key); | |
ed7a42a0 JH |
1168 | if (extra->len) |
1169 | strbuf_add_lines(buffer, " ", extra->value, extra->len); | |
1170 | else | |
1171 | strbuf_addch(buffer, '\n'); | |
1172 | } | |
1173 | ||
c871a1d1 JH |
1174 | struct commit_extra_header *read_commit_extra_headers(struct commit *commit, |
1175 | const char **exclude) | |
ed7a42a0 JH |
1176 | { |
1177 | struct commit_extra_header *extra = NULL; | |
1178 | unsigned long size; | |
218aa3a6 JK |
1179 | const char *buffer = get_commit_buffer(commit, &size); |
1180 | extra = read_commit_extra_header_lines(buffer, size, exclude); | |
1181 | unuse_commit_buffer(commit, buffer); | |
ed7a42a0 JH |
1182 | return extra; |
1183 | } | |
1184 | ||
fef461ea | 1185 | int for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data) |
063da62b CC |
1186 | { |
1187 | struct commit_extra_header *extra, *to_free; | |
fef461ea | 1188 | int res = 0; |
063da62b CC |
1189 | |
1190 | to_free = read_commit_extra_headers(commit, NULL); | |
fef461ea | 1191 | for (extra = to_free; !res && extra; extra = extra->next) { |
063da62b CC |
1192 | if (strcmp(extra->key, "mergetag")) |
1193 | continue; /* not a merge tag */ | |
fef461ea | 1194 | res = fn(commit, extra, data); |
063da62b CC |
1195 | } |
1196 | free_commit_extra_headers(to_free); | |
fef461ea | 1197 | return res; |
063da62b CC |
1198 | } |
1199 | ||
ed7a42a0 JH |
1200 | static inline int standard_header_field(const char *field, size_t len) |
1201 | { | |
b072504c RS |
1202 | return ((len == 4 && !memcmp(field, "tree", 4)) || |
1203 | (len == 6 && !memcmp(field, "parent", 6)) || | |
1204 | (len == 6 && !memcmp(field, "author", 6)) || | |
1205 | (len == 9 && !memcmp(field, "committer", 9)) || | |
1206 | (len == 8 && !memcmp(field, "encoding", 8))); | |
ed7a42a0 JH |
1207 | } |
1208 | ||
c871a1d1 JH |
1209 | static int excluded_header_field(const char *field, size_t len, const char **exclude) |
1210 | { | |
1211 | if (!exclude) | |
1212 | return 0; | |
1213 | ||
1214 | while (*exclude) { | |
1215 | size_t xlen = strlen(*exclude); | |
b072504c | 1216 | if (len == xlen && !memcmp(field, *exclude, xlen)) |
c871a1d1 JH |
1217 | return 1; |
1218 | exclude++; | |
1219 | } | |
1220 | return 0; | |
1221 | } | |
1222 | ||
82a75299 JH |
1223 | static struct commit_extra_header *read_commit_extra_header_lines( |
1224 | const char *buffer, size_t size, | |
1225 | const char **exclude) | |
ed7a42a0 JH |
1226 | { |
1227 | struct commit_extra_header *extra = NULL, **tail = &extra, *it = NULL; | |
1228 | const char *line, *next, *eof, *eob; | |
1229 | struct strbuf buf = STRBUF_INIT; | |
1230 | ||
1231 | for (line = buffer, eob = line + size; | |
1232 | line < eob && *line != '\n'; | |
1233 | line = next) { | |
1234 | next = memchr(line, '\n', eob - line); | |
1235 | next = next ? next + 1 : eob; | |
1236 | if (*line == ' ') { | |
1237 | /* continuation */ | |
1238 | if (it) | |
1239 | strbuf_add(&buf, line + 1, next - (line + 1)); | |
1240 | continue; | |
1241 | } | |
1242 | if (it) | |
1243 | it->value = strbuf_detach(&buf, &it->len); | |
1244 | strbuf_reset(&buf); | |
1245 | it = NULL; | |
1246 | ||
50a01cc4 RS |
1247 | eof = memchr(line, ' ', next - line); |
1248 | if (!eof) | |
ed7a42a0 | 1249 | eof = next; |
b072504c RS |
1250 | else if (standard_header_field(line, eof - line) || |
1251 | excluded_header_field(line, eof - line, exclude)) | |
ed7a42a0 JH |
1252 | continue; |
1253 | ||
1254 | it = xcalloc(1, sizeof(*it)); | |
1255 | it->key = xmemdupz(line, eof-line); | |
1256 | *tail = it; | |
1257 | tail = &it->next; | |
1258 | if (eof + 1 < next) | |
1259 | strbuf_add(&buf, eof + 1, next - (eof + 1)); | |
1260 | } | |
1261 | if (it) | |
1262 | it->value = strbuf_detach(&buf, &it->len); | |
1263 | return extra; | |
5231c633 JH |
1264 | } |
1265 | ||
1266 | void free_commit_extra_headers(struct commit_extra_header *extra) | |
1267 | { | |
1268 | while (extra) { | |
1269 | struct commit_extra_header *next = extra->next; | |
1270 | free(extra->key); | |
1271 | free(extra->value); | |
1272 | free(extra); | |
1273 | extra = next; | |
1274 | } | |
1275 | } | |
1276 | ||
5078f344 PO |
1277 | int commit_tree(const char *msg, size_t msg_len, const struct object_id *tree, |
1278 | struct commit_list *parents, struct object_id *ret, | |
ba3c69a9 | 1279 | const char *author, const char *sign_commit) |
5231c633 JH |
1280 | { |
1281 | struct commit_extra_header *extra = NULL, **tail = &extra; | |
1282 | int result; | |
1283 | ||
1284 | append_merge_tag_headers(parents, &tail); | |
3ffefb54 | 1285 | result = commit_tree_extended(msg, msg_len, tree, parents, ret, |
ba3c69a9 | 1286 | author, sign_commit, extra); |
5231c633 JH |
1287 | free_commit_extra_headers(extra); |
1288 | return result; | |
1289 | } | |
1290 | ||
08a94a14 LT |
1291 | static int find_invalid_utf8(const char *buf, int len) |
1292 | { | |
1293 | int offset = 0; | |
e82bd6cc | 1294 | static const unsigned int max_codepoint[] = { |
1295 | 0x7f, 0x7ff, 0xffff, 0x10ffff | |
1296 | }; | |
08a94a14 LT |
1297 | |
1298 | while (len) { | |
1299 | unsigned char c = *buf++; | |
1300 | int bytes, bad_offset; | |
28110d4b | 1301 | unsigned int codepoint; |
e82bd6cc | 1302 | unsigned int min_val, max_val; |
08a94a14 LT |
1303 | |
1304 | len--; | |
1305 | offset++; | |
1306 | ||
1307 | /* Simple US-ASCII? No worries. */ | |
1308 | if (c < 0x80) | |
1309 | continue; | |
1310 | ||
1311 | bad_offset = offset-1; | |
1312 | ||
1313 | /* | |
1314 | * Count how many more high bits set: that's how | |
1315 | * many more bytes this sequence should have. | |
1316 | */ | |
1317 | bytes = 0; | |
1318 | while (c & 0x40) { | |
1319 | c <<= 1; | |
1320 | bytes++; | |
1321 | } | |
1322 | ||
28110d4b | 1323 | /* |
1324 | * Must be between 1 and 3 more bytes. Longer sequences result in | |
1325 | * codepoints beyond U+10FFFF, which are guaranteed never to exist. | |
1326 | */ | |
1327 | if (bytes < 1 || 3 < bytes) | |
08a94a14 LT |
1328 | return bad_offset; |
1329 | ||
1330 | /* Do we *have* that many bytes? */ | |
1331 | if (len < bytes) | |
1332 | return bad_offset; | |
1333 | ||
e82bd6cc | 1334 | /* |
1335 | * Place the encoded bits at the bottom of the value and compute the | |
1336 | * valid range. | |
1337 | */ | |
28110d4b | 1338 | codepoint = (c & 0x7f) >> bytes; |
e82bd6cc | 1339 | min_val = max_codepoint[bytes-1] + 1; |
1340 | max_val = max_codepoint[bytes]; | |
28110d4b | 1341 | |
08a94a14 LT |
1342 | offset += bytes; |
1343 | len -= bytes; | |
1344 | ||
1345 | /* And verify that they are good continuation bytes */ | |
1346 | do { | |
28110d4b | 1347 | codepoint <<= 6; |
1348 | codepoint |= *buf & 0x3f; | |
08a94a14 LT |
1349 | if ((*buf++ & 0xc0) != 0x80) |
1350 | return bad_offset; | |
1351 | } while (--bytes); | |
1352 | ||
e82bd6cc | 1353 | /* Reject codepoints that are out of range for the sequence length. */ |
1354 | if (codepoint < min_val || codepoint > max_val) | |
28110d4b | 1355 | return bad_offset; |
1356 | /* Surrogates are only for UTF-16 and cannot be encoded in UTF-8. */ | |
1357 | if ((codepoint & 0x1ff800) == 0xd800) | |
1358 | return bad_offset; | |
81050ac6 | 1359 | /* U+xxFFFE and U+xxFFFF are guaranteed non-characters. */ |
dc773a67 | 1360 | if ((codepoint & 0xfffe) == 0xfffe) |
81050ac6 PK |
1361 | return bad_offset; |
1362 | /* So are anything in the range U+FDD0..U+FDEF. */ | |
1363 | if (codepoint >= 0xfdd0 && codepoint <= 0xfdef) | |
28110d4b | 1364 | return bad_offset; |
08a94a14 LT |
1365 | } |
1366 | return -1; | |
1367 | } | |
1368 | ||
1369 | /* | |
1370 | * This verifies that the buffer is in proper utf8 format. | |
1371 | * | |
1372 | * If it isn't, it assumes any non-utf8 characters are Latin1, | |
1373 | * and does the conversion. | |
08a94a14 LT |
1374 | */ |
1375 | static int verify_utf8(struct strbuf *buf) | |
1376 | { | |
1377 | int ok = 1; | |
1378 | long pos = 0; | |
1379 | ||
1380 | for (;;) { | |
1381 | int bad; | |
1382 | unsigned char c; | |
1383 | unsigned char replace[2]; | |
1384 | ||
1385 | bad = find_invalid_utf8(buf->buf + pos, buf->len - pos); | |
1386 | if (bad < 0) | |
1387 | return ok; | |
1388 | pos += bad; | |
1389 | ok = 0; | |
1390 | c = buf->buf[pos]; | |
1391 | strbuf_remove(buf, pos, 1); | |
1392 | ||
1393 | /* We know 'c' must be in the range 128-255 */ | |
1394 | replace[0] = 0xc0 + (c >> 6); | |
1395 | replace[1] = 0x80 + (c & 0x3f); | |
1396 | strbuf_insert(buf, pos, replace, 2); | |
1397 | pos += 2; | |
1398 | } | |
1399 | } | |
1400 | ||
40d52ff7 | 1401 | static const char commit_utf8_warn[] = |
4fa4b315 VA |
1402 | N_("Warning: commit message did not conform to UTF-8.\n" |
1403 | "You may want to amend it after fixing the message, or set the config\n" | |
1404 | "variable i18n.commitencoding to the encoding your project uses.\n"); | |
40d52ff7 | 1405 | |
3ffefb54 | 1406 | int commit_tree_extended(const char *msg, size_t msg_len, |
5078f344 PO |
1407 | const struct object_id *tree, |
1408 | struct commit_list *parents, struct object_id *ret, | |
ba3c69a9 JH |
1409 | const char *author, const char *sign_commit, |
1410 | struct commit_extra_header *extra) | |
40d52ff7 JK |
1411 | { |
1412 | int result; | |
1413 | int encoding_is_utf8; | |
1414 | struct strbuf buffer; | |
1415 | ||
e816caa0 | 1416 | assert_oid_type(tree, OBJ_TREE); |
40d52ff7 | 1417 | |
3ffefb54 | 1418 | if (memchr(msg, '\0', msg_len)) |
37576c14 NTND |
1419 | return error("a NUL byte in commit log message not allowed."); |
1420 | ||
40d52ff7 JK |
1421 | /* Not having i18n.commitencoding is the same as having utf-8 */ |
1422 | encoding_is_utf8 = is_encoding_utf8(git_commit_encoding); | |
1423 | ||
1424 | strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */ | |
5078f344 | 1425 | strbuf_addf(&buffer, "tree %s\n", oid_to_hex(tree)); |
40d52ff7 JK |
1426 | |
1427 | /* | |
1428 | * NOTE! This ordering means that the same exact tree merged with a | |
1429 | * different order of parents will be a _different_ changeset even | |
1430 | * if everything else stays the same. | |
1431 | */ | |
1432 | while (parents) { | |
e510ab89 | 1433 | struct commit *parent = pop_commit(&parents); |
40d52ff7 | 1434 | strbuf_addf(&buffer, "parent %s\n", |
f2fd0760 | 1435 | oid_to_hex(&parent->object.oid)); |
40d52ff7 JK |
1436 | } |
1437 | ||
1438 | /* Person/date information */ | |
1439 | if (!author) | |
f9bc573f | 1440 | author = git_author_info(IDENT_STRICT); |
40d52ff7 | 1441 | strbuf_addf(&buffer, "author %s\n", author); |
f9bc573f | 1442 | strbuf_addf(&buffer, "committer %s\n", git_committer_info(IDENT_STRICT)); |
40d52ff7 JK |
1443 | if (!encoding_is_utf8) |
1444 | strbuf_addf(&buffer, "encoding %s\n", git_commit_encoding); | |
5231c633 JH |
1445 | |
1446 | while (extra) { | |
1447 | add_extra_header(&buffer, extra); | |
1448 | extra = extra->next; | |
1449 | } | |
40d52ff7 JK |
1450 | strbuf_addch(&buffer, '\n'); |
1451 | ||
1452 | /* And add the comment */ | |
3ffefb54 | 1453 | strbuf_add(&buffer, msg, msg_len); |
40d52ff7 JK |
1454 | |
1455 | /* And check the encoding */ | |
08a94a14 | 1456 | if (encoding_is_utf8 && !verify_utf8(&buffer)) |
4fa4b315 | 1457 | fprintf(stderr, _(commit_utf8_warn)); |
40d52ff7 | 1458 | |
e505146d RS |
1459 | if (sign_commit && do_sign_commit(&buffer, sign_commit)) { |
1460 | result = -1; | |
1461 | goto out; | |
1462 | } | |
ba3c69a9 | 1463 | |
a09c985e | 1464 | result = write_object_file(buffer.buf, buffer.len, commit_type, ret); |
e505146d | 1465 | out: |
40d52ff7 JK |
1466 | strbuf_release(&buffer); |
1467 | return result; | |
1468 | } | |
ae8e4c9c | 1469 | |
e2e5ac23 NTND |
1470 | define_commit_slab(merge_desc_slab, struct merge_remote_desc *); |
1471 | static struct merge_desc_slab merge_desc_slab = COMMIT_SLAB_INIT(1, merge_desc_slab); | |
1472 | ||
1473 | struct merge_remote_desc *merge_remote_util(struct commit *commit) | |
1474 | { | |
1475 | return *merge_desc_slab_at(&merge_desc_slab, commit); | |
1476 | } | |
1477 | ||
beb518c9 RS |
1478 | void set_merge_remote_desc(struct commit *commit, |
1479 | const char *name, struct object *obj) | |
1480 | { | |
1481 | struct merge_remote_desc *desc; | |
5447a76a | 1482 | FLEX_ALLOC_STR(desc, name, name); |
beb518c9 | 1483 | desc->obj = obj; |
e2e5ac23 | 1484 | *merge_desc_slab_at(&merge_desc_slab, commit) = desc; |
beb518c9 RS |
1485 | } |
1486 | ||
ae8e4c9c JH |
1487 | struct commit *get_merge_parent(const char *name) |
1488 | { | |
1489 | struct object *obj; | |
1490 | struct commit *commit; | |
7683e2e6 | 1491 | struct object_id oid; |
e82caf38 | 1492 | if (get_oid(name, &oid)) |
ae8e4c9c | 1493 | return NULL; |
109cd76d | 1494 | obj = parse_object(the_repository, &oid); |
ae8e4c9c | 1495 | commit = (struct commit *)peel_to_type(name, 0, obj, OBJ_COMMIT); |
e2e5ac23 | 1496 | if (commit && !merge_remote_util(commit)) |
beb518c9 | 1497 | set_merge_remote_desc(commit, name, obj); |
ae8e4c9c JH |
1498 | return commit; |
1499 | } | |
89b5f1d9 RS |
1500 | |
1501 | /* | |
1502 | * Append a commit to the end of the commit_list. | |
1503 | * | |
1504 | * next starts by pointing to the variable that holds the head of an | |
1505 | * empty commit_list, and is updated to point to the "next" field of | |
1506 | * the last item on the list as new commits are appended. | |
1507 | * | |
1508 | * Usage example: | |
1509 | * | |
1510 | * struct commit_list *list; | |
1511 | * struct commit_list **next = &list; | |
1512 | * | |
1513 | * next = commit_list_append(c1, next); | |
1514 | * next = commit_list_append(c2, next); | |
1515 | * assert(commit_list_count(list) == 2); | |
1516 | * return list; | |
1517 | */ | |
1518 | struct commit_list **commit_list_append(struct commit *commit, | |
1519 | struct commit_list **next) | |
1520 | { | |
258c03eb BW |
1521 | struct commit_list *new_commit = xmalloc(sizeof(struct commit_list)); |
1522 | new_commit->item = commit; | |
1523 | *next = new_commit; | |
1524 | new_commit->next = NULL; | |
1525 | return &new_commit->next; | |
89b5f1d9 | 1526 | } |
efc7df45 | 1527 | |
fe6eb7f2 JK |
1528 | const char *find_commit_header(const char *msg, const char *key, size_t *out_len) |
1529 | { | |
1530 | int key_len = strlen(key); | |
1531 | const char *line = msg; | |
1532 | ||
1533 | while (line) { | |
1534 | const char *eol = strchrnul(line, '\n'); | |
1535 | ||
1536 | if (line == eol) | |
1537 | return NULL; | |
1538 | ||
1539 | if (eol - line > key_len && | |
1540 | !strncmp(line, key, key_len) && | |
1541 | line[key_len] == ' ') { | |
1542 | *out_len = eol - line - key_len - 1; | |
1543 | return line + key_len + 1; | |
1544 | } | |
1545 | line = *eol ? eol + 1 : NULL; | |
1546 | } | |
1547 | return NULL; | |
1548 | } | |
0ed8a4e1 | 1549 | |
8c384589 | 1550 | /* |
710714aa | 1551 | * Inspect the given string and determine the true "end" of the log message, in |
8c384589 | 1552 | * order to find where to put a new Signed-off-by: line. Ignored are |
d76650b8 BM |
1553 | * trailing comment lines and blank lines. To support "git commit -s |
1554 | * --amend" on an existing commit, we also ignore "Conflicts:". To | |
1555 | * support "git commit -v", we truncate at cut lines. | |
8c384589 CC |
1556 | * |
1557 | * Returns the number of bytes from the tail to ignore, to be fed as | |
1558 | * the second parameter to append_signoff(). | |
1559 | */ | |
66e83d9b | 1560 | size_t ignore_non_trailer(const char *buf, size_t len) |
8c384589 | 1561 | { |
66e83d9b JK |
1562 | size_t boc = 0; |
1563 | size_t bol = 0; | |
8c384589 | 1564 | int in_old_conflicts_block = 0; |
d76650b8 | 1565 | size_t cutoff = wt_status_locate_end(buf, len); |
8c384589 | 1566 | |
d76650b8 | 1567 | while (bol < cutoff) { |
710714aa | 1568 | const char *next_line = memchr(buf + bol, '\n', len - bol); |
8c384589 | 1569 | |
710714aa JT |
1570 | if (!next_line) |
1571 | next_line = buf + len; | |
8c384589 CC |
1572 | else |
1573 | next_line++; | |
1574 | ||
710714aa | 1575 | if (buf[bol] == comment_line_char || buf[bol] == '\n') { |
8c384589 CC |
1576 | /* is this the first of the run of comments? */ |
1577 | if (!boc) | |
1578 | boc = bol; | |
1579 | /* otherwise, it is just continuing */ | |
710714aa | 1580 | } else if (starts_with(buf + bol, "Conflicts:\n")) { |
8c384589 CC |
1581 | in_old_conflicts_block = 1; |
1582 | if (!boc) | |
1583 | boc = bol; | |
710714aa | 1584 | } else if (in_old_conflicts_block && buf[bol] == '\t') { |
8c384589 CC |
1585 | ; /* a pathname in the conflicts block */ |
1586 | } else if (boc) { | |
1587 | /* the previous was not trailing comment */ | |
1588 | boc = 0; | |
1589 | in_old_conflicts_block = 0; | |
1590 | } | |
710714aa | 1591 | bol = next_line - buf; |
8c384589 | 1592 | } |
d76650b8 | 1593 | return boc ? len - boc : len - cutoff; |
8c384589 | 1594 | } |