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Commit | Line | Data |
---|---|---|
463acbe1 SP |
1 | /* |
2 | Format of STDIN stream: | |
3 | ||
4 | stream ::= cmd*; | |
5 | ||
6 | cmd ::= new_blob | |
463acbe1 | 7 | | new_branch |
c44cdc7e | 8 | | new_commit |
463acbe1 SP |
9 | | new_tag |
10 | ; | |
11 | ||
c44cdc7e SP |
12 | new_blob ::= 'blob' lf |
13 | mark? | |
14 | file_content; | |
15 | file_content ::= data; | |
463acbe1 | 16 | |
c44cdc7e SP |
17 | new_branch ::= 'branch' sp ref_str lf |
18 | ('from' sp (ref_str | hexsha1 | sha1exp_str | idnum) lf)? | |
19 | lf; | |
463acbe1 | 20 | |
c44cdc7e SP |
21 | new_commit ::= 'commit' sp ref_str lf |
22 | mark? | |
23 | ('author' sp name '<' email '>' ts tz lf)? | |
24 | 'committer' sp name '<' email '>' ts tz lf | |
25 | commit_msg | |
26 | file_change* | |
27 | lf; | |
28 | commit_msg ::= data; | |
463acbe1 | 29 | |
c44cdc7e SP |
30 | file_change ::= 'M' sp mode sp (hexsha1 | idnum) sp path_str lf |
31 | | 'D' sp path_str lf | |
463acbe1 | 32 | ; |
c44cdc7e SP |
33 | mode ::= '644' | '755'; |
34 | ||
35 | new_tag ::= 'tag' sp tag_str lf | |
36 | 'from' sp (ref_str | hexsha1 | sha1exp_str | idnum) lf | |
37 | 'tagger' sp name '<' email '>' ts tz lf | |
38 | tag_msg; | |
39 | tag_msg ::= data; | |
40 | ||
41 | # note: the first idnum in a stream should be 1 and subsequent | |
42 | # idnums should not have gaps between values as this will cause | |
43 | # the stream parser to reserve space for the gapped values. An | |
44 | # idnum can be updated in the future to a new object by issuing | |
45 | # a new mark directive with the old idnum. | |
46 | # | |
47 | mark ::= 'mark' sp idnum lf; | |
48 | ||
49 | # note: declen indicates the length of binary_data in bytes. | |
50 | # declen does not include the lf preceeding or trailing the | |
51 | # binary data. | |
52 | # | |
53 | data ::= 'data' sp declen lf | |
54 | binary_data | |
55 | lf; | |
56 | ||
57 | # note: quoted strings are C-style quoting supporting \c for | |
58 | # common escapes of 'c' (e..g \n, \t, \\, \") or \nnn where nnn | |
59 | # is the signed byte value in octal. Note that the only | |
60 | # characters which must actually be escaped to protect the | |
61 | # stream formatting is: \, " and LF. Otherwise these values | |
62 | # are UTF8. | |
63 | # | |
64 | ref_str ::= ref | '"' quoted(ref) '"' ; | |
65 | sha1exp_str ::= sha1exp | '"' quoted(sha1exp) '"' ; | |
66 | tag_str ::= tag | '"' quoted(tag) '"' ; | |
67 | path_str ::= path | '"' quoted(path) '"' ; | |
68 | ||
69 | declen ::= # unsigned 32 bit value, ascii base10 notation; | |
463acbe1 | 70 | binary_data ::= # file content, not interpreted; |
c44cdc7e | 71 | |
463acbe1 SP |
72 | sp ::= # ASCII space character; |
73 | lf ::= # ASCII newline (LF) character; | |
c44cdc7e SP |
74 | |
75 | # note: a colon (':') must precede the numerical value assigned to | |
76 | # an idnum. This is to distinguish it from a ref or tag name as | |
77 | # GIT does not permit ':' in ref or tag strings. | |
78 | # | |
79 | idnum ::= ':' declen; | |
80 | path ::= # GIT style file path, e.g. "a/b/c"; | |
81 | ref ::= # GIT ref name, e.g. "refs/heads/MOZ_GECKO_EXPERIMENT"; | |
82 | tag ::= # GIT tag name, e.g. "FIREFOX_1_5"; | |
463acbe1 SP |
83 | sha1exp ::= # Any valid GIT SHA1 expression; |
84 | hexsha1 ::= # SHA1 in hexadecimal format; | |
c44cdc7e SP |
85 | |
86 | # note: name and email are UTF8 strings, however name must not | |
87 | # contain '<' or lf and email must not contain any of the | |
88 | # following: '<', '>', lf. | |
89 | # | |
90 | name ::= # valid GIT author/committer name; | |
463acbe1 | 91 | email ::= # valid GIT author/committer email; |
c44cdc7e SP |
92 | ts ::= # time since the epoch in seconds, ascii base10 notation; |
93 | tz ::= # GIT style timezone; | |
463acbe1 SP |
94 | */ |
95 | ||
db5e523f SP |
96 | #include "builtin.h" |
97 | #include "cache.h" | |
98 | #include "object.h" | |
99 | #include "blob.h" | |
463acbe1 | 100 | #include "tree.h" |
db5e523f SP |
101 | #include "delta.h" |
102 | #include "pack.h" | |
463acbe1 | 103 | #include "refs.h" |
db5e523f | 104 | #include "csum-file.h" |
c44cdc7e SP |
105 | #include "strbuf.h" |
106 | #include "quote.h" | |
db5e523f | 107 | |
27d6d290 SP |
108 | struct object_entry |
109 | { | |
110 | struct object_entry *next; | |
7111feed | 111 | enum object_type type; |
27d6d290 SP |
112 | unsigned long offset; |
113 | unsigned char sha1[20]; | |
114 | }; | |
115 | ||
463acbe1 | 116 | struct object_entry_pool |
27d6d290 | 117 | { |
463acbe1 | 118 | struct object_entry_pool *next_pool; |
27d6d290 SP |
119 | struct object_entry *next_free; |
120 | struct object_entry *end; | |
ac47a738 | 121 | struct object_entry entries[FLEX_ARRAY]; /* more */ |
27d6d290 SP |
122 | }; |
123 | ||
ac47a738 SP |
124 | struct last_object |
125 | { | |
126 | void *data; | |
6bb5b329 SP |
127 | unsigned int len; |
128 | unsigned int depth; | |
ac47a738 SP |
129 | unsigned char sha1[20]; |
130 | }; | |
131 | ||
463acbe1 SP |
132 | struct mem_pool |
133 | { | |
134 | struct mem_pool *next_pool; | |
135 | char *next_free; | |
136 | char *end; | |
137 | char space[FLEX_ARRAY]; /* more */ | |
138 | }; | |
139 | ||
140 | struct atom_str | |
141 | { | |
142 | struct atom_str *next_atom; | |
143 | int str_len; | |
144 | char str_dat[FLEX_ARRAY]; /* more */ | |
145 | }; | |
146 | ||
147 | struct tree_content; | |
6bb5b329 SP |
148 | struct tree_entry |
149 | { | |
463acbe1 SP |
150 | struct tree_content *tree; |
151 | struct atom_str* name; | |
152 | unsigned int mode; | |
6bb5b329 | 153 | unsigned char sha1[20]; |
6bb5b329 SP |
154 | }; |
155 | ||
463acbe1 | 156 | struct tree_content |
6bb5b329 | 157 | { |
463acbe1 SP |
158 | unsigned int entry_capacity; /* must match avail_tree_content */ |
159 | unsigned int entry_count; | |
160 | struct tree_entry *entries[FLEX_ARRAY]; /* more */ | |
161 | }; | |
162 | ||
163 | struct avail_tree_content | |
164 | { | |
165 | unsigned int entry_capacity; /* must match tree_content */ | |
166 | struct avail_tree_content *next_avail; | |
6bb5b329 SP |
167 | }; |
168 | ||
169 | struct branch | |
170 | { | |
463acbe1 SP |
171 | struct branch *table_next_branch; |
172 | struct branch *active_next_branch; | |
6bb5b329 | 173 | const char *name; |
463acbe1 SP |
174 | unsigned long last_commit; |
175 | struct tree_entry branch_tree; | |
176 | unsigned char sha1[20]; | |
6bb5b329 SP |
177 | }; |
178 | ||
463acbe1 SP |
179 | |
180 | /* Stats and misc. counters */ | |
db5e523f | 181 | static int max_depth = 10; |
27d6d290 | 182 | static unsigned long alloc_count; |
6bb5b329 | 183 | static unsigned long branch_count; |
db5e523f | 184 | static unsigned long object_count; |
8bcce301 | 185 | static unsigned long duplicate_count; |
6143f064 SP |
186 | static unsigned long object_count_by_type[9]; |
187 | static unsigned long duplicate_count_by_type[9]; | |
ac47a738 | 188 | |
463acbe1 SP |
189 | /* Memory pools */ |
190 | static size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool); | |
191 | static size_t total_allocd; | |
192 | static struct mem_pool *mem_pool; | |
193 | ||
c44cdc7e | 194 | /* Atom management */ |
463acbe1 SP |
195 | static unsigned int atom_table_sz = 4451; |
196 | static unsigned int atom_cnt; | |
197 | static struct atom_str **atom_table; | |
198 | ||
199 | /* The .pack file being generated */ | |
ac47a738 SP |
200 | static int pack_fd; |
201 | static unsigned long pack_offset; | |
202 | static unsigned char pack_sha1[20]; | |
203 | ||
204 | /* Table of objects we've written. */ | |
463acbe1 SP |
205 | static unsigned int object_entry_alloc = 1000; |
206 | static struct object_entry_pool *blocks; | |
207 | static struct object_entry *object_table[1 << 16]; | |
ac47a738 SP |
208 | |
209 | /* Our last blob */ | |
463acbe1 SP |
210 | static struct last_object last_blob; |
211 | ||
212 | /* Tree management */ | |
213 | static unsigned int tree_entry_alloc = 1000; | |
214 | static void *avail_tree_entry; | |
215 | static unsigned int avail_tree_table_sz = 100; | |
216 | static struct avail_tree_content **avail_tree_table; | |
8bcce301 | 217 | |
6bb5b329 | 218 | /* Branch data */ |
463acbe1 SP |
219 | static unsigned int max_active_branches = 5; |
220 | static unsigned int cur_active_branches; | |
221 | static unsigned int branch_table_sz = 1039; | |
222 | static struct branch **branch_table; | |
223 | static struct branch *active_branches; | |
224 | ||
c44cdc7e SP |
225 | /* Input stream parsing */ |
226 | static struct strbuf command_buf; | |
227 | static unsigned long command_mark; | |
228 | ||
6bb5b329 | 229 | |
27d6d290 | 230 | static void alloc_objects(int cnt) |
8bcce301 | 231 | { |
463acbe1 | 232 | struct object_entry_pool *b; |
27d6d290 | 233 | |
463acbe1 | 234 | b = xmalloc(sizeof(struct object_entry_pool) |
27d6d290 | 235 | + cnt * sizeof(struct object_entry)); |
463acbe1 | 236 | b->next_pool = blocks; |
27d6d290 SP |
237 | b->next_free = b->entries; |
238 | b->end = b->entries + cnt; | |
239 | blocks = b; | |
240 | alloc_count += cnt; | |
241 | } | |
8bcce301 | 242 | |
27d6d290 | 243 | static struct object_entry* new_object(unsigned char *sha1) |
8bcce301 | 244 | { |
27d6d290 | 245 | struct object_entry *e; |
8bcce301 | 246 | |
27d6d290 | 247 | if (blocks->next_free == blocks->end) |
463acbe1 | 248 | alloc_objects(object_entry_alloc); |
8bcce301 | 249 | |
27d6d290 SP |
250 | e = blocks->next_free++; |
251 | memcpy(e->sha1, sha1, sizeof(e->sha1)); | |
252 | return e; | |
8bcce301 SP |
253 | } |
254 | ||
463acbe1 SP |
255 | static struct object_entry* find_object(unsigned char *sha1) |
256 | { | |
257 | unsigned int h = sha1[0] << 8 | sha1[1]; | |
258 | struct object_entry *e; | |
259 | for (e = object_table[h]; e; e = e->next) | |
260 | if (!memcmp(sha1, e->sha1, sizeof(e->sha1))) | |
261 | return e; | |
262 | return NULL; | |
263 | } | |
264 | ||
8bcce301 SP |
265 | static struct object_entry* insert_object(unsigned char *sha1) |
266 | { | |
267 | unsigned int h = sha1[0] << 8 | sha1[1]; | |
27d6d290 | 268 | struct object_entry *e = object_table[h]; |
463acbe1 | 269 | struct object_entry *p = NULL; |
8bcce301 SP |
270 | |
271 | while (e) { | |
272 | if (!memcmp(sha1, e->sha1, sizeof(e->sha1))) | |
273 | return e; | |
274 | p = e; | |
275 | e = e->next; | |
276 | } | |
277 | ||
278 | e = new_object(sha1); | |
463acbe1 | 279 | e->next = NULL; |
8bcce301 SP |
280 | e->offset = 0; |
281 | if (p) | |
282 | p->next = e; | |
283 | else | |
27d6d290 | 284 | object_table[h] = e; |
8bcce301 SP |
285 | return e; |
286 | } | |
db5e523f | 287 | |
463acbe1 SP |
288 | static unsigned int hc_str(const char *s, size_t len) |
289 | { | |
290 | unsigned int r = 0; | |
291 | while (len-- > 0) | |
292 | r = r * 31 + *s++; | |
293 | return r; | |
294 | } | |
295 | ||
296 | static void* pool_alloc(size_t len) | |
297 | { | |
298 | struct mem_pool *p; | |
299 | void *r; | |
300 | ||
301 | for (p = mem_pool; p; p = p->next_pool) | |
302 | if ((p->end - p->next_free >= len)) | |
303 | break; | |
304 | ||
305 | if (!p) { | |
306 | if (len >= (mem_pool_alloc/2)) { | |
307 | total_allocd += len; | |
308 | return xmalloc(len); | |
309 | } | |
310 | total_allocd += sizeof(struct mem_pool) + mem_pool_alloc; | |
311 | p = xmalloc(sizeof(struct mem_pool) + mem_pool_alloc); | |
312 | p->next_pool = mem_pool; | |
313 | p->next_free = p->space; | |
314 | p->end = p->next_free + mem_pool_alloc; | |
315 | mem_pool = p; | |
316 | } | |
317 | ||
318 | r = p->next_free; | |
319 | p->next_free += len; | |
320 | return r; | |
321 | } | |
322 | ||
323 | static void* pool_calloc(size_t count, size_t size) | |
324 | { | |
325 | size_t len = count * size; | |
326 | void *r = pool_alloc(len); | |
327 | memset(r, 0, len); | |
328 | return r; | |
329 | } | |
330 | ||
331 | static char* pool_strdup(const char *s) | |
332 | { | |
333 | char *r = pool_alloc(strlen(s) + 1); | |
334 | strcpy(r, s); | |
335 | return r; | |
336 | } | |
337 | ||
338 | static struct atom_str* to_atom(const char *s, size_t len) | |
339 | { | |
340 | unsigned int hc = hc_str(s, len) % atom_table_sz; | |
341 | struct atom_str *c; | |
342 | ||
343 | for (c = atom_table[hc]; c; c = c->next_atom) | |
344 | if (c->str_len == len && !strncmp(s, c->str_dat, len)) | |
345 | return c; | |
346 | ||
347 | c = pool_alloc(sizeof(struct atom_str) + len + 1); | |
348 | c->str_len = len; | |
349 | strncpy(c->str_dat, s, len); | |
350 | c->str_dat[len] = 0; | |
351 | c->next_atom = atom_table[hc]; | |
352 | atom_table[hc] = c; | |
353 | atom_cnt++; | |
354 | return c; | |
355 | } | |
356 | ||
357 | static struct branch* lookup_branch(const char *name) | |
358 | { | |
359 | unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; | |
360 | struct branch *b; | |
361 | ||
362 | for (b = branch_table[hc]; b; b = b->table_next_branch) | |
363 | if (!strcmp(name, b->name)) | |
364 | return b; | |
365 | return NULL; | |
366 | } | |
367 | ||
368 | static struct branch* new_branch(const char *name) | |
369 | { | |
370 | unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; | |
371 | struct branch* b = lookup_branch(name); | |
372 | ||
373 | if (b) | |
374 | die("Invalid attempt to create duplicate branch: %s", name); | |
c44cdc7e SP |
375 | if (check_ref_format(name)) |
376 | die("Branch name doesn't conform to GIT standards: %s", name); | |
463acbe1 SP |
377 | |
378 | b = pool_calloc(1, sizeof(struct branch)); | |
379 | b->name = pool_strdup(name); | |
380 | b->table_next_branch = branch_table[hc]; | |
381 | branch_table[hc] = b; | |
382 | branch_count++; | |
383 | return b; | |
384 | } | |
385 | ||
386 | static unsigned int hc_entries(unsigned int cnt) | |
387 | { | |
388 | cnt = cnt & 7 ? (cnt / 8) + 1 : cnt / 8; | |
389 | return cnt < avail_tree_table_sz ? cnt : avail_tree_table_sz - 1; | |
390 | } | |
391 | ||
392 | static struct tree_content* new_tree_content(unsigned int cnt) | |
393 | { | |
394 | struct avail_tree_content *f, *l = NULL; | |
395 | struct tree_content *t; | |
396 | unsigned int hc = hc_entries(cnt); | |
397 | ||
398 | for (f = avail_tree_table[hc]; f; l = f, f = f->next_avail) | |
399 | if (f->entry_capacity >= cnt) | |
400 | break; | |
401 | ||
402 | if (f) { | |
403 | if (l) | |
404 | l->next_avail = f->next_avail; | |
405 | else | |
406 | avail_tree_table[hc] = f->next_avail; | |
407 | } else { | |
408 | cnt = cnt & 7 ? ((cnt / 8) + 1) * 8 : cnt; | |
409 | f = pool_alloc(sizeof(*t) + sizeof(t->entries[0]) * cnt); | |
410 | f->entry_capacity = cnt; | |
411 | } | |
412 | ||
413 | t = (struct tree_content*)f; | |
414 | t->entry_count = 0; | |
415 | return t; | |
416 | } | |
417 | ||
418 | static void release_tree_entry(struct tree_entry *e); | |
419 | static void release_tree_content(struct tree_content *t) | |
420 | { | |
421 | struct avail_tree_content *f = (struct avail_tree_content*)t; | |
422 | unsigned int hc = hc_entries(f->entry_capacity); | |
423 | unsigned int i; | |
424 | for (i = 0; i < t->entry_count; i++) | |
425 | release_tree_entry(t->entries[i]); | |
426 | f->next_avail = avail_tree_table[hc]; | |
427 | avail_tree_table[hc] = f; | |
428 | } | |
429 | ||
430 | static struct tree_content* grow_tree_content( | |
431 | struct tree_content *t, | |
432 | int amt) | |
433 | { | |
434 | struct tree_content *r = new_tree_content(t->entry_count + amt); | |
435 | r->entry_count = t->entry_count; | |
436 | memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0])); | |
437 | release_tree_content(t); | |
438 | return r; | |
439 | } | |
440 | ||
441 | static struct tree_entry* new_tree_entry() | |
442 | { | |
443 | struct tree_entry *e; | |
444 | ||
445 | if (!avail_tree_entry) { | |
446 | unsigned int n = tree_entry_alloc; | |
447 | avail_tree_entry = e = xmalloc(n * sizeof(struct tree_entry)); | |
448 | while (n--) { | |
449 | *((void**)e) = e + 1; | |
450 | e++; | |
451 | } | |
452 | } | |
453 | ||
454 | e = avail_tree_entry; | |
455 | avail_tree_entry = *((void**)e); | |
456 | return e; | |
457 | } | |
458 | ||
459 | static void release_tree_entry(struct tree_entry *e) | |
460 | { | |
461 | if (e->tree) | |
462 | release_tree_content(e->tree); | |
463 | *((void**)e) = avail_tree_entry; | |
464 | avail_tree_entry = e; | |
465 | } | |
466 | ||
467 | static void yread(int fd, void *buffer, size_t length) | |
db5e523f SP |
468 | { |
469 | ssize_t ret = 0; | |
470 | while (ret < length) { | |
471 | ssize_t size = xread(fd, (char *) buffer + ret, length - ret); | |
463acbe1 SP |
472 | if (!size) |
473 | die("Read from descriptor %i: end of stream", fd); | |
474 | if (size < 0) | |
475 | die("Read from descriptor %i: %s", fd, strerror(errno)); | |
476 | ret += size; | |
477 | } | |
478 | } | |
479 | ||
463acbe1 | 480 | static void ywrite(int fd, void *buffer, size_t length) |
db5e523f SP |
481 | { |
482 | ssize_t ret = 0; | |
483 | while (ret < length) { | |
484 | ssize_t size = xwrite(fd, (char *) buffer + ret, length - ret); | |
463acbe1 SP |
485 | if (!size) |
486 | die("Write to descriptor %i: end of file", fd); | |
487 | if (size < 0) | |
488 | die("Write to descriptor %i: %s", fd, strerror(errno)); | |
db5e523f SP |
489 | ret += size; |
490 | } | |
db5e523f SP |
491 | } |
492 | ||
c44cdc7e | 493 | static size_t encode_header( |
ac47a738 | 494 | enum object_type type, |
c44cdc7e | 495 | size_t size, |
ac47a738 | 496 | unsigned char *hdr) |
db5e523f SP |
497 | { |
498 | int n = 1; | |
499 | unsigned char c; | |
500 | ||
501 | if (type < OBJ_COMMIT || type > OBJ_DELTA) | |
502 | die("bad type %d", type); | |
503 | ||
504 | c = (type << 4) | (size & 15); | |
505 | size >>= 4; | |
506 | while (size) { | |
507 | *hdr++ = c | 0x80; | |
508 | c = size & 0x7f; | |
509 | size >>= 7; | |
510 | n++; | |
511 | } | |
512 | *hdr = c; | |
513 | return n; | |
514 | } | |
515 | ||
ac47a738 SP |
516 | static int store_object( |
517 | enum object_type type, | |
518 | void *dat, | |
c44cdc7e | 519 | size_t datlen, |
6bb5b329 SP |
520 | struct last_object *last, |
521 | unsigned char *sha1out) | |
db5e523f | 522 | { |
db5e523f | 523 | void *out, *delta; |
ac47a738 SP |
524 | struct object_entry *e; |
525 | unsigned char hdr[96]; | |
526 | unsigned char sha1[20]; | |
db5e523f | 527 | unsigned long hdrlen, deltalen; |
ac47a738 SP |
528 | SHA_CTX c; |
529 | z_stream s; | |
530 | ||
531 | hdrlen = sprintf((char*)hdr,"%s %lu",type_names[type],datlen) + 1; | |
532 | SHA1_Init(&c); | |
533 | SHA1_Update(&c, hdr, hdrlen); | |
534 | SHA1_Update(&c, dat, datlen); | |
535 | SHA1_Final(sha1, &c); | |
6bb5b329 SP |
536 | if (sha1out) |
537 | memcpy(sha1out, sha1, sizeof(sha1)); | |
ac47a738 SP |
538 | |
539 | e = insert_object(sha1); | |
540 | if (e->offset) { | |
541 | duplicate_count++; | |
6143f064 | 542 | duplicate_count_by_type[type]++; |
463acbe1 | 543 | return 1; |
ac47a738 | 544 | } |
7111feed | 545 | e->type = type; |
ac47a738 SP |
546 | e->offset = pack_offset; |
547 | object_count++; | |
6143f064 | 548 | object_count_by_type[type]++; |
db5e523f | 549 | |
463acbe1 | 550 | if (last && last->data && last->depth < max_depth) |
ac47a738 | 551 | delta = diff_delta(last->data, last->len, |
db5e523f SP |
552 | dat, datlen, |
553 | &deltalen, 0); | |
ac47a738 | 554 | else |
db5e523f SP |
555 | delta = 0; |
556 | ||
557 | memset(&s, 0, sizeof(s)); | |
558 | deflateInit(&s, zlib_compression_level); | |
559 | ||
560 | if (delta) { | |
ac47a738 | 561 | last->depth++; |
db5e523f SP |
562 | s.next_in = delta; |
563 | s.avail_in = deltalen; | |
564 | hdrlen = encode_header(OBJ_DELTA, deltalen, hdr); | |
463acbe1 SP |
565 | ywrite(pack_fd, hdr, hdrlen); |
566 | ywrite(pack_fd, last->sha1, sizeof(sha1)); | |
ac47a738 | 567 | pack_offset += hdrlen + sizeof(sha1); |
db5e523f | 568 | } else { |
463acbe1 SP |
569 | if (last) |
570 | last->depth = 0; | |
db5e523f SP |
571 | s.next_in = dat; |
572 | s.avail_in = datlen; | |
ac47a738 | 573 | hdrlen = encode_header(type, datlen, hdr); |
463acbe1 | 574 | ywrite(pack_fd, hdr, hdrlen); |
ac47a738 | 575 | pack_offset += hdrlen; |
db5e523f SP |
576 | } |
577 | ||
578 | s.avail_out = deflateBound(&s, s.avail_in); | |
579 | s.next_out = out = xmalloc(s.avail_out); | |
580 | while (deflate(&s, Z_FINISH) == Z_OK) | |
581 | /* nothing */; | |
582 | deflateEnd(&s); | |
583 | ||
463acbe1 | 584 | ywrite(pack_fd, out, s.total_out); |
ac47a738 | 585 | pack_offset += s.total_out; |
db5e523f SP |
586 | |
587 | free(out); | |
588 | if (delta) | |
589 | free(delta); | |
463acbe1 SP |
590 | if (last) { |
591 | if (last->data) | |
592 | free(last->data); | |
593 | last->data = dat; | |
594 | last->len = datlen; | |
595 | memcpy(last->sha1, sha1, sizeof(sha1)); | |
596 | } | |
597 | return 0; | |
598 | } | |
599 | ||
600 | static const char *get_mode(const char *str, unsigned int *modep) | |
601 | { | |
602 | unsigned char c; | |
603 | unsigned int mode = 0; | |
604 | ||
605 | while ((c = *str++) != ' ') { | |
606 | if (c < '0' || c > '7') | |
607 | return NULL; | |
608 | mode = (mode << 3) + (c - '0'); | |
609 | } | |
610 | *modep = mode; | |
611 | return str; | |
612 | } | |
613 | ||
614 | static void load_tree(struct tree_entry *root) | |
615 | { | |
616 | struct object_entry *myoe; | |
617 | struct tree_content *t; | |
618 | unsigned long size; | |
619 | char *buf; | |
620 | const char *c; | |
621 | char type[20]; | |
622 | ||
623 | root->tree = t = new_tree_content(8); | |
624 | if (!memcmp(root->sha1, null_sha1, 20)) | |
625 | return; | |
626 | ||
627 | myoe = find_object(root->sha1); | |
628 | if (myoe) { | |
629 | die("FIXME"); | |
630 | } else { | |
631 | buf = read_sha1_file(root->sha1, type, &size); | |
632 | if (!buf || strcmp(type, tree_type)) | |
633 | die("Can't load existing tree %s", sha1_to_hex(root->sha1)); | |
634 | } | |
635 | ||
636 | c = buf; | |
637 | while (c != (buf + size)) { | |
638 | struct tree_entry *e = new_tree_entry(); | |
639 | ||
640 | if (t->entry_count == t->entry_capacity) | |
641 | root->tree = t = grow_tree_content(t, 8); | |
642 | t->entries[t->entry_count++] = e; | |
643 | ||
644 | e->tree = NULL; | |
645 | c = get_mode(c, &e->mode); | |
646 | if (!c) | |
647 | die("Corrupt mode in %s", sha1_to_hex(root->sha1)); | |
648 | e->name = to_atom(c, strlen(c)); | |
649 | c += e->name->str_len + 1; | |
650 | memcpy(e->sha1, c, sizeof(e->sha1)); | |
651 | c += 20; | |
652 | } | |
653 | free(buf); | |
654 | } | |
655 | ||
656 | static int tecmp (const void *_a, const void *_b) | |
657 | { | |
658 | struct tree_entry *a = *((struct tree_entry**)_a); | |
659 | struct tree_entry *b = *((struct tree_entry**)_b); | |
660 | return base_name_compare( | |
661 | a->name->str_dat, a->name->str_len, a->mode, | |
662 | b->name->str_dat, b->name->str_len, b->mode); | |
663 | } | |
664 | ||
665 | static void store_tree(struct tree_entry *root) | |
666 | { | |
667 | struct tree_content *t = root->tree; | |
668 | unsigned int i; | |
669 | size_t maxlen; | |
670 | char *buf, *c; | |
671 | ||
672 | if (memcmp(root->sha1, null_sha1, 20)) | |
673 | return; | |
674 | ||
675 | maxlen = 0; | |
676 | for (i = 0; i < t->entry_count; i++) { | |
677 | maxlen += t->entries[i]->name->str_len + 34; | |
678 | if (t->entries[i]->tree) | |
679 | store_tree(t->entries[i]); | |
680 | } | |
681 | ||
682 | qsort(t->entries, t->entry_count, sizeof(t->entries[0]), tecmp); | |
683 | buf = c = xmalloc(maxlen); | |
684 | for (i = 0; i < t->entry_count; i++) { | |
685 | struct tree_entry *e = t->entries[i]; | |
686 | c += sprintf(c, "%o", e->mode); | |
687 | *c++ = ' '; | |
688 | strcpy(c, e->name->str_dat); | |
689 | c += e->name->str_len + 1; | |
690 | memcpy(c, e->sha1, 20); | |
691 | c += 20; | |
692 | } | |
693 | store_object(OBJ_TREE, buf, c - buf, NULL, root->sha1); | |
694 | free(buf); | |
695 | } | |
696 | ||
697 | static int tree_content_set( | |
698 | struct tree_entry *root, | |
699 | const char *p, | |
700 | const unsigned char *sha1, | |
701 | const unsigned int mode) | |
702 | { | |
703 | struct tree_content *t = root->tree; | |
704 | const char *slash1; | |
705 | unsigned int i, n; | |
706 | struct tree_entry *e; | |
707 | ||
708 | slash1 = strchr(p, '/'); | |
709 | if (slash1) | |
710 | n = slash1 - p; | |
711 | else | |
712 | n = strlen(p); | |
713 | ||
714 | for (i = 0; i < t->entry_count; i++) { | |
715 | e = t->entries[i]; | |
716 | if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) { | |
717 | if (!slash1) { | |
718 | if (e->mode == mode && !memcmp(e->sha1, sha1, 20)) | |
719 | return 0; | |
720 | e->mode = mode; | |
721 | memcpy(e->sha1, sha1, 20); | |
722 | if (e->tree) { | |
723 | release_tree_content(e->tree); | |
724 | e->tree = NULL; | |
725 | } | |
726 | memcpy(root->sha1, null_sha1, 20); | |
727 | return 1; | |
728 | } | |
729 | if (!S_ISDIR(e->mode)) { | |
730 | e->tree = new_tree_content(8); | |
7111feed | 731 | e->mode = S_IFDIR; |
463acbe1 SP |
732 | } |
733 | if (!e->tree) | |
734 | load_tree(e); | |
735 | if (tree_content_set(e, slash1 + 1, sha1, mode)) { | |
736 | memcpy(root->sha1, null_sha1, 20); | |
737 | return 1; | |
738 | } | |
739 | return 0; | |
740 | } | |
741 | } | |
742 | ||
743 | if (t->entry_count == t->entry_capacity) | |
744 | root->tree = t = grow_tree_content(t, 8); | |
745 | e = new_tree_entry(); | |
746 | e->name = to_atom(p, n); | |
747 | t->entries[t->entry_count++] = e; | |
748 | if (slash1) { | |
749 | e->tree = new_tree_content(8); | |
7111feed | 750 | e->mode = S_IFDIR; |
463acbe1 SP |
751 | tree_content_set(e, slash1 + 1, sha1, mode); |
752 | } else { | |
753 | e->tree = NULL; | |
754 | e->mode = mode; | |
755 | memcpy(e->sha1, sha1, 20); | |
756 | } | |
757 | memcpy(root->sha1, null_sha1, 20); | |
758 | return 1; | |
759 | } | |
760 | ||
761 | static int tree_content_remove(struct tree_entry *root, const char *p) | |
762 | { | |
763 | struct tree_content *t = root->tree; | |
764 | const char *slash1; | |
765 | unsigned int i, n; | |
766 | struct tree_entry *e; | |
767 | ||
768 | slash1 = strchr(p, '/'); | |
769 | if (slash1) | |
770 | n = slash1 - p; | |
771 | else | |
772 | n = strlen(p); | |
773 | ||
774 | for (i = 0; i < t->entry_count; i++) { | |
775 | e = t->entries[i]; | |
776 | if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) { | |
777 | if (!slash1 || !S_ISDIR(e->mode)) | |
778 | goto del_entry; | |
779 | if (!e->tree) | |
780 | load_tree(e); | |
781 | if (tree_content_remove(e, slash1 + 1)) { | |
782 | if (!e->tree->entry_count) | |
783 | goto del_entry; | |
784 | memcpy(root->sha1, null_sha1, 20); | |
785 | return 1; | |
786 | } | |
787 | return 0; | |
788 | } | |
789 | } | |
790 | return 0; | |
791 | ||
792 | del_entry: | |
793 | for (i++; i < t->entry_count; i++) | |
794 | t->entries[i-1] = t->entries[i]; | |
795 | t->entry_count--; | |
796 | release_tree_entry(e); | |
797 | memcpy(root->sha1, null_sha1, 20); | |
ac47a738 | 798 | return 1; |
db5e523f SP |
799 | } |
800 | ||
8bcce301 | 801 | static void init_pack_header() |
db5e523f | 802 | { |
c90be46a SP |
803 | struct pack_header hdr; |
804 | ||
805 | hdr.hdr_signature = htonl(PACK_SIGNATURE); | |
806 | hdr.hdr_version = htonl(2); | |
807 | hdr.hdr_entries = 0; | |
808 | ||
809 | ywrite(pack_fd, &hdr, sizeof(hdr)); | |
810 | pack_offset = sizeof(hdr); | |
db5e523f SP |
811 | } |
812 | ||
8bcce301 | 813 | static void fixup_header_footer() |
db5e523f SP |
814 | { |
815 | SHA_CTX c; | |
816 | char hdr[8]; | |
db5e523f SP |
817 | unsigned long cnt; |
818 | char *buf; | |
819 | size_t n; | |
820 | ||
ac47a738 | 821 | if (lseek(pack_fd, 0, SEEK_SET) != 0) |
db5e523f SP |
822 | die("Failed seeking to start: %s", strerror(errno)); |
823 | ||
824 | SHA1_Init(&c); | |
463acbe1 | 825 | yread(pack_fd, hdr, 8); |
db5e523f SP |
826 | SHA1_Update(&c, hdr, 8); |
827 | ||
db5e523f SP |
828 | cnt = htonl(object_count); |
829 | SHA1_Update(&c, &cnt, 4); | |
463acbe1 | 830 | ywrite(pack_fd, &cnt, 4); |
db5e523f SP |
831 | |
832 | buf = xmalloc(128 * 1024); | |
833 | for (;;) { | |
ac47a738 | 834 | n = xread(pack_fd, buf, 128 * 1024); |
db5e523f SP |
835 | if (n <= 0) |
836 | break; | |
837 | SHA1_Update(&c, buf, n); | |
838 | } | |
839 | free(buf); | |
840 | ||
ac47a738 | 841 | SHA1_Final(pack_sha1, &c); |
463acbe1 | 842 | ywrite(pack_fd, pack_sha1, sizeof(pack_sha1)); |
db5e523f SP |
843 | } |
844 | ||
8bcce301 | 845 | static int oecmp (const void *_a, const void *_b) |
db5e523f | 846 | { |
8bcce301 SP |
847 | struct object_entry *a = *((struct object_entry**)_a); |
848 | struct object_entry *b = *((struct object_entry**)_b); | |
849 | return memcmp(a->sha1, b->sha1, sizeof(a->sha1)); | |
850 | } | |
851 | ||
852 | static void write_index(const char *idx_name) | |
853 | { | |
854 | struct sha1file *f; | |
855 | struct object_entry **idx, **c, **last; | |
856 | struct object_entry *e; | |
463acbe1 | 857 | struct object_entry_pool *o; |
8bcce301 SP |
858 | unsigned int array[256]; |
859 | int i; | |
860 | ||
861 | /* Build the sorted table of object IDs. */ | |
862 | idx = xmalloc(object_count * sizeof(struct object_entry*)); | |
863 | c = idx; | |
463acbe1 | 864 | for (o = blocks; o; o = o->next_pool) |
27d6d290 SP |
865 | for (e = o->entries; e != o->next_free; e++) |
866 | *c++ = e; | |
8bcce301 SP |
867 | last = idx + object_count; |
868 | qsort(idx, object_count, sizeof(struct object_entry*), oecmp); | |
869 | ||
870 | /* Generate the fan-out array. */ | |
871 | c = idx; | |
872 | for (i = 0; i < 256; i++) { | |
873 | struct object_entry **next = c;; | |
874 | while (next < last) { | |
875 | if ((*next)->sha1[0] != i) | |
876 | break; | |
877 | next++; | |
878 | } | |
879 | array[i] = htonl(next - idx); | |
880 | c = next; | |
881 | } | |
882 | ||
883 | f = sha1create("%s", idx_name); | |
884 | sha1write(f, array, 256 * sizeof(int)); | |
885 | for (c = idx; c != last; c++) { | |
886 | unsigned int offset = htonl((*c)->offset); | |
887 | sha1write(f, &offset, 4); | |
888 | sha1write(f, (*c)->sha1, sizeof((*c)->sha1)); | |
889 | } | |
ac47a738 | 890 | sha1write(f, pack_sha1, sizeof(pack_sha1)); |
8bcce301 SP |
891 | sha1close(f, NULL, 1); |
892 | free(idx); | |
893 | } | |
894 | ||
463acbe1 SP |
895 | static void dump_branches() |
896 | { | |
897 | static const char *msg = "fast-import"; | |
898 | unsigned int i; | |
899 | struct branch *b; | |
900 | struct ref_lock *lock; | |
901 | ||
902 | for (i = 0; i < branch_table_sz; i++) { | |
903 | for (b = branch_table[i]; b; b = b->table_next_branch) { | |
904 | lock = lock_any_ref_for_update(b->name, NULL, 0); | |
905 | if (!lock || write_ref_sha1(lock, b->sha1, msg) < 0) | |
906 | die("Can't write %s", b->name); | |
907 | } | |
908 | } | |
909 | } | |
910 | ||
c44cdc7e SP |
911 | static void read_next_command() |
912 | { | |
913 | read_line(&command_buf, stdin, '\n'); | |
914 | } | |
915 | ||
916 | static void cmd_mark() | |
917 | { | |
918 | if (!strncmp("mark :", command_buf.buf, 6)) { | |
919 | command_mark = strtoul(command_buf.buf + 6, NULL, 10); | |
920 | read_next_command(); | |
921 | } | |
922 | else | |
923 | command_mark = 0; | |
924 | } | |
925 | ||
926 | static void* cmd_data (size_t *size) | |
927 | { | |
928 | size_t n = 0; | |
929 | void *buffer; | |
930 | size_t length; | |
931 | ||
932 | if (strncmp("data ", command_buf.buf, 5)) | |
933 | die("Expected 'data n' command, found: %s", command_buf.buf); | |
934 | ||
935 | length = strtoul(command_buf.buf + 5, NULL, 10); | |
936 | buffer = xmalloc(length); | |
937 | ||
938 | while (n < length) { | |
939 | size_t s = fread((char*)buffer + n, 1, length - n, stdin); | |
940 | if (!s && feof(stdin)) | |
941 | die("EOF in data (%lu bytes remaining)", length - n); | |
942 | n += s; | |
943 | } | |
944 | ||
945 | if (fgetc(stdin) != '\n') | |
946 | die("An lf did not trail the binary data as expected."); | |
947 | ||
948 | *size = length; | |
949 | return buffer; | |
950 | } | |
951 | ||
463acbe1 | 952 | static void cmd_new_blob() |
6143f064 | 953 | { |
c44cdc7e | 954 | size_t datlen; |
6143f064 | 955 | void *dat; |
c44cdc7e SP |
956 | unsigned char sha1[20]; |
957 | ||
958 | read_next_command(); | |
959 | cmd_mark(); | |
960 | dat = cmd_data(&datlen); | |
6143f064 | 961 | |
463acbe1 | 962 | if (store_object(OBJ_BLOB, dat, datlen, &last_blob, sha1)) |
6143f064 SP |
963 | free(dat); |
964 | } | |
965 | ||
463acbe1 | 966 | static void unload_one_branch() |
6bb5b329 | 967 | { |
463acbe1 SP |
968 | while (cur_active_branches >= max_active_branches) { |
969 | unsigned long min_commit = ULONG_MAX; | |
970 | struct branch *e, *l = NULL, *p = NULL; | |
971 | ||
972 | for (e = active_branches; e; e = e->active_next_branch) { | |
973 | if (e->last_commit < min_commit) { | |
974 | p = l; | |
975 | min_commit = e->last_commit; | |
976 | } | |
977 | l = e; | |
978 | } | |
979 | ||
980 | if (p) { | |
981 | e = p->active_next_branch; | |
982 | p->active_next_branch = e->active_next_branch; | |
983 | } else { | |
984 | e = active_branches; | |
985 | active_branches = e->active_next_branch; | |
986 | } | |
987 | e->active_next_branch = NULL; | |
988 | if (e->branch_tree.tree) { | |
989 | release_tree_content(e->branch_tree.tree); | |
990 | e->branch_tree.tree = NULL; | |
991 | } | |
992 | cur_active_branches--; | |
6bb5b329 | 993 | } |
6bb5b329 SP |
994 | } |
995 | ||
463acbe1 | 996 | static void load_branch(struct branch *b) |
6bb5b329 | 997 | { |
463acbe1 SP |
998 | load_tree(&b->branch_tree); |
999 | b->active_next_branch = active_branches; | |
1000 | active_branches = b; | |
1001 | cur_active_branches++; | |
6bb5b329 SP |
1002 | } |
1003 | ||
463acbe1 | 1004 | static void file_change_m(struct branch *b) |
6bb5b329 | 1005 | { |
c44cdc7e SP |
1006 | const char *p = command_buf.buf + 2; |
1007 | char *p_uq; | |
1008 | const char *endp; | |
7111feed | 1009 | struct object_entry *oe; |
463acbe1 | 1010 | unsigned char sha1[20]; |
c44cdc7e | 1011 | unsigned int mode; |
7111feed | 1012 | char type[20]; |
6bb5b329 | 1013 | |
c44cdc7e SP |
1014 | p = get_mode(p, &mode); |
1015 | if (!p) | |
1016 | die("Corrupt mode: %s", command_buf.buf); | |
1017 | switch (mode) { | |
1018 | case S_IFREG | 0644: | |
1019 | case S_IFREG | 0755: | |
1020 | case 0644: | |
1021 | case 0755: | |
1022 | /* ok */ | |
1023 | break; | |
1024 | default: | |
1025 | die("Corrupt mode: %s", command_buf.buf); | |
1026 | } | |
1027 | ||
1028 | if (get_sha1_hex(p, sha1)) | |
1029 | die("Invalid SHA1: %s", command_buf.buf); | |
1030 | p += 40; | |
1031 | if (*p++ != ' ') | |
1032 | die("Missing space after SHA1: %s", command_buf.buf); | |
1033 | ||
1034 | p_uq = unquote_c_style(p, &endp); | |
1035 | if (p_uq) { | |
1036 | if (*endp) | |
1037 | die("Garbage after path in: %s", command_buf.buf); | |
1038 | p = p_uq; | |
1039 | } | |
6bb5b329 | 1040 | |
7111feed SP |
1041 | oe = find_object(sha1); |
1042 | if (oe) { | |
1043 | if (oe->type != OBJ_BLOB) | |
c44cdc7e SP |
1044 | die("Not a blob (actually a %s): %s", |
1045 | command_buf.buf, type_names[oe->type]); | |
7111feed SP |
1046 | } else { |
1047 | if (sha1_object_info(sha1, type, NULL)) | |
c44cdc7e | 1048 | die("Blob not found: %s", command_buf.buf); |
7111feed | 1049 | if (strcmp(blob_type, type)) |
c44cdc7e SP |
1050 | die("Not a blob (actually a %s): %s", |
1051 | command_buf.buf, type); | |
7111feed | 1052 | } |
6bb5b329 | 1053 | |
c44cdc7e SP |
1054 | tree_content_set(&b->branch_tree, p, sha1, S_IFREG | mode); |
1055 | ||
1056 | if (p_uq) | |
1057 | free(p_uq); | |
463acbe1 | 1058 | } |
6bb5b329 | 1059 | |
463acbe1 SP |
1060 | static void file_change_d(struct branch *b) |
1061 | { | |
c44cdc7e SP |
1062 | const char *p = command_buf.buf + 2; |
1063 | char *p_uq; | |
1064 | const char *endp; | |
1065 | ||
1066 | p_uq = unquote_c_style(p, &endp); | |
1067 | if (p_uq) { | |
1068 | if (*endp) | |
1069 | die("Garbage after path in: %s", command_buf.buf); | |
1070 | p = p_uq; | |
1071 | } | |
1072 | tree_content_remove(&b->branch_tree, p); | |
1073 | if (p_uq) | |
1074 | free(p_uq); | |
6bb5b329 SP |
1075 | } |
1076 | ||
463acbe1 | 1077 | static void cmd_new_commit() |
6bb5b329 | 1078 | { |
c44cdc7e SP |
1079 | struct branch *b; |
1080 | void *msg; | |
1081 | size_t msglen; | |
1082 | char *str_uq; | |
1083 | const char *endp; | |
1084 | char *sp; | |
1085 | char *author = NULL; | |
1086 | char *committer = NULL; | |
1087 | char *body; | |
1088 | ||
1089 | /* Obtain the branch name from the rest of our command */ | |
1090 | sp = strchr(command_buf.buf, ' ') + 1; | |
1091 | str_uq = unquote_c_style(sp, &endp); | |
1092 | if (str_uq) { | |
1093 | if (*endp) | |
1094 | die("Garbage after ref in: %s", command_buf.buf); | |
1095 | sp = str_uq; | |
1096 | } | |
1097 | b = lookup_branch(sp); | |
463acbe1 | 1098 | if (!b) |
c44cdc7e SP |
1099 | die("Branch not declared: %s", sp); |
1100 | if (str_uq) | |
1101 | free(str_uq); | |
1102 | ||
1103 | read_next_command(); | |
1104 | cmd_mark(); | |
1105 | if (!strncmp("author ", command_buf.buf, 7)) { | |
1106 | author = strdup(command_buf.buf); | |
1107 | read_next_command(); | |
1108 | } | |
1109 | if (!strncmp("committer ", command_buf.buf, 10)) { | |
1110 | committer = strdup(command_buf.buf); | |
1111 | read_next_command(); | |
1112 | } | |
1113 | if (!committer) | |
1114 | die("Expected committer but didn't get one"); | |
1115 | msg = cmd_data(&msglen); | |
1116 | ||
1117 | /* ensure the branch is active/loaded */ | |
463acbe1 SP |
1118 | if (!b->branch_tree.tree) { |
1119 | unload_one_branch(); | |
1120 | load_branch(b); | |
1121 | } | |
6bb5b329 | 1122 | |
463acbe1 SP |
1123 | /* file_change* */ |
1124 | for (;;) { | |
c44cdc7e SP |
1125 | read_next_command(); |
1126 | if (1 == command_buf.len) | |
463acbe1 | 1127 | break; |
c44cdc7e | 1128 | else if (!strncmp("M ", command_buf.buf, 2)) |
463acbe1 | 1129 | file_change_m(b); |
c44cdc7e | 1130 | else if (!strncmp("D ", command_buf.buf, 2)) |
463acbe1 SP |
1131 | file_change_d(b); |
1132 | else | |
c44cdc7e | 1133 | die("Unsupported file_change: %s", command_buf.buf); |
6bb5b329 | 1134 | } |
6bb5b329 | 1135 | |
c44cdc7e | 1136 | /* build the tree and the commit */ |
463acbe1 | 1137 | store_tree(&b->branch_tree); |
c44cdc7e SP |
1138 | body = xmalloc(97 + msglen |
1139 | + (author | |
1140 | ? strlen(author) + strlen(committer) | |
1141 | : 2 * strlen(committer))); | |
1142 | sp = body; | |
1143 | sp += sprintf(sp, "tree %s\n", sha1_to_hex(b->branch_tree.sha1)); | |
1144 | if (memcmp(b->sha1, null_sha1, 20)) | |
1145 | sp += sprintf(sp, "parent %s\n", sha1_to_hex(b->sha1)); | |
1146 | if (author) | |
1147 | sp += sprintf(sp, "%s\n", author); | |
1148 | else | |
1149 | sp += sprintf(sp, "author %s\n", committer + 10); | |
1150 | sp += sprintf(sp, "%s\n\n", committer); | |
1151 | memcpy(sp, msg, msglen); | |
1152 | sp += msglen; | |
1153 | if (author) | |
1154 | free(author); | |
1155 | free(committer); | |
1156 | free(msg); | |
1157 | ||
1158 | store_object(OBJ_COMMIT, body, sp - body, NULL, b->sha1); | |
463acbe1 SP |
1159 | free(body); |
1160 | b->last_commit = object_count_by_type[OBJ_COMMIT]; | |
6bb5b329 SP |
1161 | } |
1162 | ||
463acbe1 | 1163 | static void cmd_new_branch() |
6bb5b329 | 1164 | { |
c44cdc7e SP |
1165 | struct branch *b; |
1166 | char *str_uq; | |
1167 | const char *endp; | |
1168 | char *sp; | |
1169 | ||
1170 | /* Obtain the new branch name from the rest of our command */ | |
1171 | sp = strchr(command_buf.buf, ' ') + 1; | |
1172 | str_uq = unquote_c_style(sp, &endp); | |
1173 | if (str_uq) { | |
1174 | if (*endp) | |
1175 | die("Garbage after ref in: %s", command_buf.buf); | |
1176 | sp = str_uq; | |
463acbe1 | 1177 | } |
c44cdc7e SP |
1178 | b = new_branch(sp); |
1179 | if (str_uq) | |
1180 | free(str_uq); | |
1181 | read_next_command(); | |
1182 | ||
1183 | /* from ... */ | |
1184 | if (!strncmp("from ", command_buf.buf, 5)) { | |
1185 | const char *from; | |
1186 | struct branch *s; | |
1187 | ||
1188 | from = strchr(command_buf.buf, ' ') + 1; | |
1189 | str_uq = unquote_c_style(from, &endp); | |
1190 | if (str_uq) { | |
1191 | if (*endp) | |
1192 | die("Garbage after string in: %s", command_buf.buf); | |
1193 | from = str_uq; | |
463acbe1 | 1194 | } |
c44cdc7e SP |
1195 | |
1196 | s = lookup_branch(from); | |
1197 | if (b == s) | |
1198 | die("Can't create a branch from itself: %s", b->name); | |
1199 | else if (s) { | |
1200 | memcpy(b->sha1, s->sha1, 20); | |
1201 | memcpy(b->branch_tree.sha1, s->branch_tree.sha1, 20); | |
1202 | } else if (!get_sha1(from, b->sha1)) { | |
1203 | if (!memcmp(b->sha1, null_sha1, 20)) | |
1204 | memcpy(b->branch_tree.sha1, null_sha1, 20); | |
1205 | else { | |
1206 | unsigned long size; | |
1207 | char *buf; | |
1208 | ||
1209 | buf = read_object_with_reference(b->sha1, | |
1210 | type_names[OBJ_COMMIT], &size, b->sha1); | |
1211 | if (!buf || size < 46) | |
1212 | die("Not a valid commit: %s", from); | |
1213 | if (memcmp("tree ", buf, 5) | |
1214 | || get_sha1_hex(buf + 5, b->branch_tree.sha1)) | |
1215 | die("The commit %s is corrupt", sha1_to_hex(b->sha1)); | |
1216 | free(buf); | |
1217 | } | |
1218 | } else | |
1219 | die("Invalid ref name or SHA1 expression: %s", from); | |
1220 | ||
1221 | if (str_uq) | |
1222 | free(str_uq); | |
1223 | read_next_command(); | |
1224 | } else { | |
1225 | memcpy(b->sha1, null_sha1, 20); | |
1226 | memcpy(b->branch_tree.sha1, null_sha1, 20); | |
1227 | } | |
1228 | ||
1229 | if (command_buf.eof || command_buf.len > 1) | |
1230 | die("An lf did not terminate the branch command as expected."); | |
6bb5b329 SP |
1231 | } |
1232 | ||
8bcce301 SP |
1233 | int main(int argc, const char **argv) |
1234 | { | |
1235 | const char *base_name = argv[1]; | |
1236 | int est_obj_cnt = atoi(argv[2]); | |
1237 | char *pack_name; | |
1238 | char *idx_name; | |
6143f064 | 1239 | struct stat sb; |
8bcce301 | 1240 | |
463acbe1 SP |
1241 | setup_ident(); |
1242 | git_config(git_default_config); | |
1243 | ||
8bcce301 SP |
1244 | pack_name = xmalloc(strlen(base_name) + 6); |
1245 | sprintf(pack_name, "%s.pack", base_name); | |
1246 | idx_name = xmalloc(strlen(base_name) + 5); | |
1247 | sprintf(idx_name, "%s.idx", base_name); | |
1248 | ||
ac47a738 SP |
1249 | pack_fd = open(pack_name, O_RDWR|O_CREAT|O_EXCL, 0666); |
1250 | if (pack_fd < 0) | |
6143f064 | 1251 | die("Can't create %s: %s", pack_name, strerror(errno)); |
8bcce301 | 1252 | |
c44cdc7e | 1253 | init_pack_header(); |
27d6d290 | 1254 | alloc_objects(est_obj_cnt); |
c44cdc7e | 1255 | strbuf_init(&command_buf); |
463acbe1 SP |
1256 | |
1257 | atom_table = xcalloc(atom_table_sz, sizeof(struct atom_str*)); | |
1258 | branch_table = xcalloc(branch_table_sz, sizeof(struct branch*)); | |
1259 | avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*)); | |
1260 | ||
db5e523f | 1261 | for (;;) { |
c44cdc7e SP |
1262 | read_next_command(); |
1263 | if (command_buf.eof) | |
db5e523f | 1264 | break; |
c44cdc7e SP |
1265 | else if (!strcmp("blob", command_buf.buf)) |
1266 | cmd_new_blob(); | |
1267 | else if (!strncmp("branch ", command_buf.buf, 7)) | |
1268 | cmd_new_branch(); | |
1269 | else if (!strncmp("commit ", command_buf.buf, 7)) | |
1270 | cmd_new_commit(); | |
1271 | else | |
1272 | die("Unsupported command: %s", command_buf.buf); | |
db5e523f | 1273 | } |
c44cdc7e | 1274 | |
db5e523f | 1275 | fixup_header_footer(); |
ac47a738 | 1276 | close(pack_fd); |
8bcce301 | 1277 | write_index(idx_name); |
463acbe1 | 1278 | dump_branches(); |
8bcce301 | 1279 | |
6143f064 SP |
1280 | fprintf(stderr, "%s statistics:\n", argv[0]); |
1281 | fprintf(stderr, "---------------------------------------------------\n"); | |
1282 | fprintf(stderr, "Alloc'd objects: %10lu (%10lu overflow )\n", alloc_count, alloc_count - est_obj_cnt); | |
1283 | fprintf(stderr, "Total objects: %10lu (%10lu duplicates)\n", object_count, duplicate_count); | |
1284 | fprintf(stderr, " blobs : %10lu (%10lu duplicates)\n", object_count_by_type[OBJ_BLOB], duplicate_count_by_type[OBJ_BLOB]); | |
1285 | fprintf(stderr, " trees : %10lu (%10lu duplicates)\n", object_count_by_type[OBJ_TREE], duplicate_count_by_type[OBJ_TREE]); | |
1286 | fprintf(stderr, " commits: %10lu (%10lu duplicates)\n", object_count_by_type[OBJ_COMMIT], duplicate_count_by_type[OBJ_COMMIT]); | |
1287 | fprintf(stderr, " tags : %10lu (%10lu duplicates)\n", object_count_by_type[OBJ_TAG], duplicate_count_by_type[OBJ_TAG]); | |
6bb5b329 | 1288 | fprintf(stderr, "Total branches: %10lu\n", branch_count); |
463acbe1 | 1289 | fprintf(stderr, "Total atoms: %10u\n", atom_cnt); |
7111feed SP |
1290 | fprintf(stderr, "Memory total: %10lu KiB\n", (total_allocd + alloc_count*sizeof(struct object_entry))/1024); |
1291 | fprintf(stderr, " pools: %10lu KiB\n", total_allocd/1024); | |
1292 | fprintf(stderr, " objects: %10lu KiB\n", (alloc_count*sizeof(struct object_entry))/1024); | |
6143f064 SP |
1293 | fprintf(stderr, "---------------------------------------------------\n"); |
1294 | ||
1295 | stat(pack_name, &sb); | |
1296 | fprintf(stderr, "Pack size: %10lu KiB\n", (unsigned long)(sb.st_size/1024)); | |
1297 | stat(idx_name, &sb); | |
1298 | fprintf(stderr, "Index size: %10lu KiB\n", (unsigned long)(sb.st_size/1024)); | |
1299 | ||
1300 | fprintf(stderr, "\n"); | |
db5e523f SP |
1301 | |
1302 | return 0; | |
1303 | } |