Hash :
5a6f31f2
Author :
Date :
2012-07-12T13:20:29
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730
/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include <assert.h>
#include "common.h"
#include "buffer.h"
#include "tree.h"
#include "git2.h"
typedef enum {
REVPARSE_STATE_INIT,
REVPARSE_STATE_CARET,
REVPARSE_STATE_LINEAR,
REVPARSE_STATE_COLON,
REVPARSE_STATE_DONE,
} revparse_state;
static int revspec_error(const char *revspec)
{
giterr_set(GITERR_INVALID, "Failed to parse revision specifier - Invalid pattern '%s'", revspec);
return -1;
}
static int revparse_lookup_fully_qualifed_ref(git_object **out, git_repository *repo, const char*spec)
{
git_oid resolved;
int error;
if ((error = git_reference_name_to_oid(&resolved, repo, spec)) < 0)
return error;
return git_object_lookup(out, repo, &resolved, GIT_OBJ_ANY);
}
/* Returns non-zero if yes */
static int spec_looks_like_describe_output(const char *spec)
{
regex_t regex;
int regex_error, retcode;
regex_error = regcomp(®ex, ".+-[0-9]+-g[0-9a-fA-F]+", REG_EXTENDED);
if (regex_error != 0) {
giterr_set_regex(®ex, regex_error);
return regex_error;
}
retcode = regexec(®ex, spec, 0, NULL, 0);
regfree(®ex);
return retcode == 0;
}
static int disambiguate_refname(git_reference **out, git_repository *repo, const char *refname)
{
int error, i;
bool fallbackmode = true;
git_reference *ref;
git_buf refnamebuf = GIT_BUF_INIT, name = GIT_BUF_INIT;
static const char* formatters[] = {
"%s",
"refs/%s",
"refs/tags/%s",
"refs/heads/%s",
"refs/remotes/%s",
"refs/remotes/%s/HEAD",
NULL
};
if (*refname)
git_buf_puts(&name, refname);
else {
git_buf_puts(&name, "HEAD");
fallbackmode = false;
}
for (i = 0; formatters[i] && (fallbackmode || i == 0); i++) {
git_buf_clear(&refnamebuf);
if ((error = git_buf_printf(&refnamebuf, formatters[i], git_buf_cstr(&name))) < 0)
goto cleanup;
error = git_reference_lookup_resolved(&ref, repo, git_buf_cstr(&refnamebuf), -1);
if (!error) {
*out = ref;
error = 0;
goto cleanup;
}
if (error != GIT_ENOTFOUND)
goto cleanup;
}
cleanup:
git_buf_free(&name);
git_buf_free(&refnamebuf);
return error;
}
static int maybe_sha_or_abbrev(git_object**out, git_repository *repo, const char *spec)
{
git_oid oid;
size_t speclen = strlen(spec);
if (git_oid_fromstrn(&oid, spec, speclen) < 0)
return GIT_ENOTFOUND;
return git_object_lookup_prefix(out, repo, &oid, speclen, GIT_OBJ_ANY);
}
static int maybe_describe(git_object**out, git_repository *repo, const char *spec)
{
const char *substr;
int match;
/* "git describe" output; snip everything before/including "-g" */
substr = strstr(spec, "-g");
if (substr == NULL)
return GIT_ENOTFOUND;
if ((match = spec_looks_like_describe_output(spec)) < 0)
return match;
if (!match)
return GIT_ENOTFOUND;
return maybe_sha_or_abbrev(out, repo, substr+2);
}
static int revparse_lookup_object(git_object **out, git_repository *repo, const char *spec)
{
int error;
git_reference *ref;
error = maybe_describe(out, repo, spec);
if (!error)
return 0;
if (error < 0 && error != GIT_ENOTFOUND)
return error;
error = disambiguate_refname(&ref, repo, spec);
if (!error) {
error = git_object_lookup(out, repo, git_reference_oid(ref), GIT_OBJ_ANY);
git_reference_free(ref);
return 0;
}
if (error < 0 && error != GIT_ENOTFOUND)
return error;
error = maybe_sha_or_abbrev(out, repo, spec);
if (!error)
return 0;
if (error < 0 && error != GIT_ENOTFOUND)
return error;
giterr_set(GITERR_REFERENCE, "Refspec '%s' not found.", spec);
return GIT_ENOTFOUND;
}
static int all_chars_are_digits(const char *str, size_t len)
{
size_t i = 0;
for (i = 0; i < len; i++)
if (!git__isdigit(str[i])) return 0;
return 1;
}
static int walk_ref_history(git_object **out, git_repository *repo, const char *refspec, const char *reflogspec)
{
git_reference *disambiguated = NULL;
git_reflog *reflog = NULL;
int n, retcode = GIT_ERROR;
int i, refloglen;
const git_reflog_entry *entry;
git_buf buf = GIT_BUF_INIT;
size_t refspeclen = strlen(refspec);
size_t reflogspeclen = strlen(reflogspec);
if (git__prefixcmp(reflogspec, "@{") != 0 ||
git__suffixcmp(reflogspec, "}") != 0)
return revspec_error(reflogspec);
/* "@{-N}" form means walk back N checkouts. That means the HEAD log. */
if (!git__prefixcmp(reflogspec, "@{-")) {
regex_t regex;
int regex_error;
if (refspeclen > 0)
return revspec_error(reflogspec);
if (git__strtol32(&n, reflogspec+3, NULL, 10) < 0 || n < 1)
return revspec_error(reflogspec);
if (!git_reference_lookup(&disambiguated, repo, "HEAD")) {
if (!git_reflog_read(&reflog, disambiguated)) {
regex_error = regcomp(®ex, "checkout: moving from (.*) to .*", REG_EXTENDED);
if (regex_error != 0) {
giterr_set_regex(®ex, regex_error);
} else {
regmatch_t regexmatches[2];
retcode = GIT_ENOTFOUND;
refloglen = git_reflog_entrycount(reflog);
for (i=refloglen-1; i >= 0; i--) {
const char *msg;
entry = git_reflog_entry_byindex(reflog, i);
msg = git_reflog_entry_msg(entry);
if (!regexec(®ex, msg, 2, regexmatches, 0)) {
n--;
if (!n) {
git_buf_put(&buf, msg+regexmatches[1].rm_so, regexmatches[1].rm_eo - regexmatches[1].rm_so);
retcode = revparse_lookup_object(out, repo, git_buf_cstr(&buf));
break;
}
}
}
regfree(®ex);
}
}
}
} else {
int date_error = 0, result;
git_time_t timestamp;
git_buf datebuf = GIT_BUF_INIT;
result = disambiguate_refname(&disambiguated, repo, refspec);
if (result < 0) {
retcode = result;
goto cleanup;
}
git_buf_put(&datebuf, reflogspec+2, reflogspeclen-3);
date_error = git__date_parse(×tamp, git_buf_cstr(&datebuf));
/* @{u} or @{upstream} -> upstream branch, for a tracking branch. This is stored in the config. */
if (!strcmp(reflogspec, "@{u}") || !strcmp(reflogspec, "@{upstream}")) {
git_reference *tracking;
if (!(retcode = git_reference_remote_tracking_from_branch(&tracking, disambiguated))) {
retcode = revparse_lookup_fully_qualifed_ref(out, repo, git_reference_name(tracking));
git_reference_free(tracking);
}
}
/* @{N} -> Nth prior value for the ref (from reflog) */
else if (all_chars_are_digits(reflogspec+2, reflogspeclen-3) &&
!git__strtol32(&n, reflogspec+2, NULL, 10) &&
n <= 100000000) { /* Allow integer time */
git_buf_puts(&buf, git_reference_name(disambiguated));
if (n == 0)
retcode = revparse_lookup_fully_qualifed_ref(out, repo, git_buf_cstr(&buf));
else if (!git_reflog_read(&reflog, disambiguated)) {
int numentries = git_reflog_entrycount(reflog);
if (numentries < n + 1) {
giterr_set(GITERR_REFERENCE, "Reflog for '%s' has only %d entries, asked for %d",
git_buf_cstr(&buf), numentries, n);
retcode = GIT_ENOTFOUND;
} else {
const git_reflog_entry *entry = git_reflog_entry_byindex(reflog, n);
const git_oid *oid = git_reflog_entry_oidold(entry);
retcode = git_object_lookup(out, repo, oid, GIT_OBJ_ANY);
}
}
}
else if (!date_error) {
/* Ref as it was on a certain date */
git_reflog *reflog;
if (!git_reflog_read(&reflog, disambiguated)) {
/* Keep walking until we find an entry older than the given date */
int numentries = git_reflog_entrycount(reflog);
int i;
for (i = numentries - 1; i >= 0; i--) {
const git_reflog_entry *entry = git_reflog_entry_byindex(reflog, i);
git_time commit_time = git_reflog_entry_committer(entry)->when;
if (commit_time.time - timestamp <= 0) {
retcode = git_object_lookup(out, repo, git_reflog_entry_oidnew(entry), GIT_OBJ_ANY);
break;
}
}
if (i == -1) {
/* Didn't find a match */
retcode = GIT_ENOTFOUND;
}
git_reflog_free(reflog);
}
}
git_buf_free(&datebuf);
}
cleanup:
if (reflog)
git_reflog_free(reflog);
git_buf_free(&buf);
git_reference_free(disambiguated);
return retcode;
}
static git_object* dereference_object(git_object *obj)
{
git_otype type = git_object_type(obj);
switch (type) {
case GIT_OBJ_COMMIT:
{
git_tree *tree = NULL;
if (0 == git_commit_tree(&tree, (git_commit*)obj)) {
return (git_object*)tree;
}
}
break;
case GIT_OBJ_TAG:
{
git_object *newobj = NULL;
if (0 == git_tag_target(&newobj, (git_tag*)obj)) {
return newobj;
}
}
break;
default:
case GIT_OBJ_TREE:
case GIT_OBJ_BLOB:
case GIT_OBJ_OFS_DELTA:
case GIT_OBJ_REF_DELTA:
break;
}
/* Can't dereference some types */
return NULL;
}
static int dereference_to_type(git_object **out, git_object *obj, git_otype target_type)
{
int retcode = 1;
git_object *obj1 = obj, *obj2 = obj;
while (retcode > 0) {
git_otype this_type = git_object_type(obj1);
if (this_type == target_type) {
*out = obj1;
retcode = 0;
} else {
/* Dereference once, if possible. */
obj2 = dereference_object(obj1);
if (!obj2) {
giterr_set(GITERR_REFERENCE, "Can't dereference to type");
retcode = GIT_ERROR;
}
}
if (obj1 != obj && obj1 != obj2) {
git_object_free(obj1);
}
obj1 = obj2;
}
return retcode;
}
static git_otype parse_obj_type(const char *str)
{
if (!strcmp(str, "{commit}")) return GIT_OBJ_COMMIT;
if (!strcmp(str, "{tree}")) return GIT_OBJ_TREE;
if (!strcmp(str, "{blob}")) return GIT_OBJ_BLOB;
if (!strcmp(str, "{tag}")) return GIT_OBJ_TAG;
return GIT_OBJ_BAD;
}
static int handle_caret_syntax(git_object **out, git_repository *repo, git_object *obj, const char *movement)
{
git_commit *commit;
size_t movementlen = strlen(movement);
int n;
if (*movement == '{') {
if (movement[movementlen-1] != '}')
return revspec_error(movement);
/* {} -> Dereference until we reach an object that isn't a tag. */
if (movementlen == 2) {
git_object *newobj = obj;
git_object *newobj2 = newobj;
while (git_object_type(newobj2) == GIT_OBJ_TAG) {
newobj2 = dereference_object(newobj);
if (newobj != obj) git_object_free(newobj);
if (!newobj2) {
giterr_set(GITERR_REFERENCE, "Couldn't find object of target type.");
return GIT_ERROR;
}
newobj = newobj2;
}
*out = newobj2;
return 0;
}
/* {/...} -> Walk all commits until we see a commit msg that matches the phrase. */
if (movement[1] == '/') {
int retcode = GIT_ERROR;
git_revwalk *walk;
if (!git_revwalk_new(&walk, repo)) {
git_oid oid;
regex_t preg;
int reg_error;
git_buf buf = GIT_BUF_INIT;
git_revwalk_sorting(walk, GIT_SORT_TIME);
git_revwalk_push(walk, git_object_id(obj));
/* Extract the regex from the movement string */
git_buf_put(&buf, movement+2, strlen(movement)-3);
reg_error = regcomp(&preg, git_buf_cstr(&buf), REG_EXTENDED);
if (reg_error != 0) {
giterr_set_regex(&preg, reg_error);
} else {
while(!git_revwalk_next(&oid, walk)) {
git_object *walkobj;
/* Fetch the commit object, and check for matches in the message */
if (!git_object_lookup(&walkobj, repo, &oid, GIT_OBJ_COMMIT)) {
if (!regexec(&preg, git_commit_message((git_commit*)walkobj), 0, NULL, 0)) {
/* Found it! */
retcode = 0;
*out = walkobj;
if (obj == walkobj) {
/* Avoid leaking an object */
git_object_free(walkobj);
}
break;
}
git_object_free(walkobj);
}
}
if (retcode < 0) {
giterr_set(GITERR_REFERENCE, "Couldn't find a match for %s", movement);
}
regfree(&preg);
}
git_buf_free(&buf);
git_revwalk_free(walk);
}
return retcode;
}
/* {...} -> Dereference until we reach an object of a certain type. */
if (dereference_to_type(out, obj, parse_obj_type(movement)) < 0) {
return GIT_ERROR;
}
return 0;
}
/* Dereference until we reach a commit. */
if (dereference_to_type(&obj, obj, GIT_OBJ_COMMIT) < 0) {
/* Can't dereference to a commit; fail */
return GIT_ERROR;
}
/* "^" is the same as "^1" */
if (movementlen == 0) {
n = 1;
} else {
git__strtol32(&n, movement, NULL, 10);
}
commit = (git_commit*)obj;
/* "^0" just returns the input */
if (n == 0) {
*out = obj;
return 0;
}
if (git_commit_parent(&commit, commit, n-1) < 0) {
return GIT_ENOTFOUND;
}
*out = (git_object*)commit;
return 0;
}
static int handle_linear_syntax(git_object **out, git_object *obj, const char *movement)
{
int n;
/* Dereference until we reach a commit. */
if (dereference_to_type(&obj, obj, GIT_OBJ_COMMIT) < 0) {
/* Can't dereference to a commit; fail */
return GIT_ERROR;
}
/* "~" is the same as "~1" */
if (*movement == '\0') {
n = 1;
} else if (git__strtol32(&n, movement, NULL, 10) < 0) {
return GIT_ERROR;
}
return git_commit_nth_gen_ancestor((git_commit **)out, (git_commit*)obj, n);
}
static int handle_colon_syntax(git_object **out,
git_repository *repo,
git_object *obj,
const char *path)
{
git_object *tree = obj;
int error = -1;
git_tree_entry *entry = NULL;
/* Dereference until we reach a tree. */
if (dereference_to_type(&tree, obj, GIT_OBJ_TREE) < 0)
return GIT_ERROR;
if (*path == '\0')
return git_object_lookup(out, repo, git_object_id(tree), GIT_OBJ_TREE);
/*
* TODO: Handle the relative path syntax
* (:./relative/path and :../relative/path)
*/
if ((error = git_tree_entry_bypath(&entry, (git_tree *)tree, path)) < 0)
goto cleanup;
error = git_tree_entry_to_object(out, repo, entry);
cleanup:
git_tree_entry_free(entry);
if (tree != obj)
git_object_free(tree);
return error;
}
static int revparse_global_grep(git_object **out, git_repository *repo, const char *pattern)
{
git_revwalk *walk;
int retcode = GIT_ERROR;
if (!pattern[0]) {
giterr_set(GITERR_REGEX, "Empty pattern");
return GIT_ERROR;
}
if (!git_revwalk_new(&walk, repo)) {
regex_t preg;
int reg_error;
git_oid oid;
git_revwalk_sorting(walk, GIT_SORT_TIME);
git_revwalk_push_glob(walk, "refs/heads/*");
reg_error = regcomp(&preg, pattern, REG_EXTENDED);
if (reg_error != 0) {
giterr_set_regex(&preg, reg_error);
} else {
git_object *walkobj = NULL, *resultobj = NULL;
while(!git_revwalk_next(&oid, walk)) {
/* Fetch the commit object, and check for matches in the message */
if (walkobj != resultobj) git_object_free(walkobj);
if (!git_object_lookup(&walkobj, repo, &oid, GIT_OBJ_COMMIT)) {
if (!regexec(&preg, git_commit_message((git_commit*)walkobj), 0, NULL, 0)) {
/* Match! */
resultobj = walkobj;
retcode = 0;
break;
}
}
}
if (!resultobj) {
giterr_set(GITERR_REFERENCE, "Couldn't find a match for %s", pattern);
retcode = GIT_ENOTFOUND;
git_object_free(walkobj);
} else {
*out = resultobj;
}
regfree(&preg);
git_revwalk_free(walk);
}
}
return retcode;
}
int git_revparse_single(git_object **out, git_repository *repo, const char *spec)
{
revparse_state current_state = REVPARSE_STATE_INIT, next_state = REVPARSE_STATE_INIT;
const char *spec_cur = spec;
git_object *cur_obj = NULL, *next_obj = NULL;
git_buf specbuffer = GIT_BUF_INIT, stepbuffer = GIT_BUF_INIT;
int retcode = 0;
assert(out && repo && spec);
if (spec[0] == ':') {
if (spec[1] == '/') {
return revparse_global_grep(out, repo, spec+2);
}
/* TODO: support merge-stage path lookup (":2:Makefile"). */
giterr_set(GITERR_INVALID, "Unimplemented");
return GIT_ERROR;
}
while (current_state != REVPARSE_STATE_DONE) {
switch (current_state) {
case REVPARSE_STATE_INIT:
if (!*spec_cur) {
/* No operators, just a name. Find it and return. */
retcode = revparse_lookup_object(out, repo, spec);
next_state = REVPARSE_STATE_DONE;
} else if (*spec_cur == '@') {
/* '@' syntax doesn't allow chaining */
git_buf_puts(&stepbuffer, spec_cur);
retcode = walk_ref_history(out, repo, git_buf_cstr(&specbuffer), git_buf_cstr(&stepbuffer));
next_state = REVPARSE_STATE_DONE;
} else if (*spec_cur == '^') {
next_state = REVPARSE_STATE_CARET;
} else if (*spec_cur == '~') {
next_state = REVPARSE_STATE_LINEAR;
} else if (*spec_cur == ':') {
next_state = REVPARSE_STATE_COLON;
} else {
git_buf_putc(&specbuffer, *spec_cur);
}
spec_cur++;
if (current_state != next_state && next_state != REVPARSE_STATE_DONE) {
/* Leaving INIT state, find the object specified, in case that state needs it */
if ((retcode = revparse_lookup_object(&next_obj, repo, git_buf_cstr(&specbuffer))) < 0)
next_state = REVPARSE_STATE_DONE;
}
break;
case REVPARSE_STATE_CARET:
/* Gather characters until NULL, '~', or '^' */
if (!*spec_cur) {
retcode = handle_caret_syntax(out, repo, cur_obj, git_buf_cstr(&stepbuffer));
next_state = REVPARSE_STATE_DONE;
} else if (*spec_cur == '~') {
retcode = handle_caret_syntax(&next_obj, repo, cur_obj, git_buf_cstr(&stepbuffer));
git_buf_clear(&stepbuffer);
next_state = !retcode ? REVPARSE_STATE_LINEAR : REVPARSE_STATE_DONE;
} else if (*spec_cur == '^') {
retcode = handle_caret_syntax(&next_obj, repo, cur_obj, git_buf_cstr(&stepbuffer));
git_buf_clear(&stepbuffer);
if (retcode < 0) {
next_state = REVPARSE_STATE_DONE;
}
} else if (*spec_cur == ':') {
retcode = handle_caret_syntax(&next_obj, repo, cur_obj, git_buf_cstr(&stepbuffer));
git_buf_clear(&stepbuffer);
next_state = !retcode ? REVPARSE_STATE_COLON : REVPARSE_STATE_DONE;
} else {
git_buf_putc(&stepbuffer, *spec_cur);
}
spec_cur++;
break;
case REVPARSE_STATE_LINEAR:
if (!*spec_cur) {
retcode = handle_linear_syntax(out, cur_obj, git_buf_cstr(&stepbuffer));
next_state = REVPARSE_STATE_DONE;
} else if (*spec_cur == '~') {
retcode = handle_linear_syntax(&next_obj, cur_obj, git_buf_cstr(&stepbuffer));
git_buf_clear(&stepbuffer);
if (retcode < 0) {
next_state = REVPARSE_STATE_DONE;
}
} else if (*spec_cur == '^') {
retcode = handle_linear_syntax(&next_obj, cur_obj, git_buf_cstr(&stepbuffer));
git_buf_clear(&stepbuffer);
next_state = !retcode ? REVPARSE_STATE_CARET : REVPARSE_STATE_DONE;
} else {
git_buf_putc(&stepbuffer, *spec_cur);
}
spec_cur++;
break;
case REVPARSE_STATE_COLON:
if (*spec_cur) {
git_buf_putc(&stepbuffer, *spec_cur);
} else {
retcode = handle_colon_syntax(out, repo, cur_obj, git_buf_cstr(&stepbuffer));
next_state = REVPARSE_STATE_DONE;
}
spec_cur++;
break;
case REVPARSE_STATE_DONE:
if (cur_obj && *out != cur_obj) git_object_free(cur_obj);
if (next_obj && *out != next_obj) git_object_free(next_obj);
break;
}
current_state = next_state;
if (cur_obj != next_obj) {
if (cur_obj) git_object_free(cur_obj);
cur_obj = next_obj;
}
}
if (*out != cur_obj) git_object_free(cur_obj);
if (*out != next_obj && next_obj != cur_obj) git_object_free(next_obj);
git_buf_free(&specbuffer);
git_buf_free(&stepbuffer);
return retcode;
}