branch: move from foreach to an iterator Create a git_branch_iterator type which is equivalent to the foreach but lets us write loops instead of callbacks. Since the introduction of git_reference_shorthand(), the added value of passing the name is reduced.
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
diff --git a/include/git2/branch.h b/include/git2/branch.h
index de414e9..b5e7d60 100644
--- a/include/git2/branch.h
+++ b/include/git2/branch.h
@@ -66,33 +66,41 @@ GIT_EXTERN(int) git_branch_create(
*/
GIT_EXTERN(int) git_branch_delete(git_reference *branch);
-typedef int (*git_branch_foreach_cb)(
- const char *branch_name,
- git_branch_t branch_type,
- void *payload);
+/** Iterator type for branches */
+typedef struct git_branch_iterator git_branch_iterator;
/**
- * Loop over all the branches and issue a callback for each one.
- *
- * If the callback returns a non-zero value, this will stop looping.
+ * Create an iterator which loops over the requested branches.
*
+ * @param out the iterator
* @param repo Repository where to find the branches.
- *
* @param list_flags Filtering flags for the branch
* listing. Valid values are GIT_BRANCH_LOCAL, GIT_BRANCH_REMOTE
* or a combination of the two.
*
- * @param branch_cb Callback to invoke per found branch.
+ * @return 0 on success or an error code
+ */
+GIT_EXTERN(int) git_branch_iterator_new(
+ git_branch_iterator **out,
+ git_repository *repo,
+ unsigned int list_flags);
+
+/**
+ * Retrieve the next branch from the iterator
*
- * @param payload Extra parameter to callback function.
+ * @param out the reference
+ * @param out_type the type of branch (local or remote-tracking)
+ * @param iter the branch iterator
+ * @return 0 on success, GIT_ITEROVER if there are no more branches or an error code.
+ */
+GIT_EXTERN(int) git_branch_next(git_reference **out, unsigned int *out_type, git_branch_iterator *iter);
+
+/**
+ * Free a branch iterator
*
- * @return 0 on success, GIT_EUSER on non-zero callback, or error code
+ * @param iter the iterator to free
*/
-GIT_EXTERN(int) git_branch_foreach(
- git_repository *repo,
- unsigned int list_flags,
- git_branch_foreach_cb branch_cb,
- void *payload);
+GIT_EXTERN(void) git_branch_iterator_free(git_branch_iterator *iter);
/**
* Move/rename an existing local branch reference.
diff --git a/src/branch.c b/src/branch.c
index 3a745c1..4660f00 100644
--- a/src/branch.c
+++ b/src/branch.c
@@ -124,48 +124,66 @@ on_error:
return error;
}
-int git_branch_foreach(
- git_repository *repo,
- unsigned int list_flags,
- git_branch_foreach_cb callback,
- void *payload)
-{
+typedef struct {
git_reference_iterator *iter;
- git_reference *ref;
- int error = 0;
+ unsigned int flags;
+} branch_iter;
- if (git_reference_iterator_new(&iter, repo) < 0)
- return -1;
+int git_branch_next(git_reference **out, unsigned int *out_type, git_branch_iterator *_iter)
+{
+ branch_iter *iter = (branch_iter *) _iter;
+ git_reference *ref;
+ int error;
- while ((error = git_reference_next(&ref, iter)) == 0) {
- if (list_flags & GIT_BRANCH_LOCAL &&
- git__prefixcmp(ref->name, GIT_REFS_HEADS_DIR) == 0) {
- if (callback(ref->name + strlen(GIT_REFS_HEADS_DIR),
- GIT_BRANCH_LOCAL, payload)) {
- error = GIT_EUSER;
- }
+ while ((error = git_reference_next(&ref, iter->iter)) == 0) {
+ if ((iter->flags & GIT_BRANCH_LOCAL) &&
+ !git__prefixcmp(ref->name, GIT_REFS_HEADS_DIR)) {
+ *out = ref;
+ *out_type = GIT_BRANCH_LOCAL;
+
+ return 0;
+ } else if ((iter->flags & GIT_BRANCH_REMOTE) &&
+ !git__prefixcmp(ref->name, GIT_REFS_REMOTES_DIR)) {
+ *out = ref;
+ *out_type = GIT_BRANCH_REMOTE;
+
+ return 0;
+ } else {
+ git_reference_free(ref);
}
+ }
- if (list_flags & GIT_BRANCH_REMOTE &&
- git__prefixcmp(ref->name, GIT_REFS_REMOTES_DIR) == 0) {
- if (callback(ref->name + strlen(GIT_REFS_REMOTES_DIR),
- GIT_BRANCH_REMOTE, payload)) {
- error = GIT_EUSER;
- }
- }
+ return error;
+}
+
+int git_branch_iterator_new(
+ git_branch_iterator **out,
+ git_repository *repo,
+ unsigned int list_flags)
+{
+ branch_iter *iter;
+
+ iter = git__calloc(1, sizeof(branch_iter));
+ GITERR_CHECK_ALLOC(iter);
- git_reference_free(ref);
+ iter->flags = list_flags;
- /* check if the callback has cancelled iteration */
- if (error == GIT_EUSER)
- break;
+ if (git_reference_iterator_new(&iter->iter, repo) < 0) {
+ git__free(iter);
+ return -1;
}
- if (error == GIT_ITEROVER)
- error = 0;
+ *out = (git_branch_iterator *) iter;
- git_reference_iterator_free(iter);
- return error;
+ return 0;
+}
+
+void git_branch_iterator_free(git_branch_iterator *_iter)
+{
+ branch_iter *iter = (branch_iter *) _iter;
+
+ git_reference_iterator_free(iter->iter);
+ git__free(iter);
}
int git_branch_move(
diff --git a/tests-clar/online/push.c b/tests-clar/online/push.c
index 5a747bb..320ecb7 100644
--- a/tests-clar/online/push.c
+++ b/tests-clar/online/push.c
@@ -163,18 +163,6 @@ static void verify_refs(git_remote *remote, expected_ref expected_refs[], size_t
git_vector_free(&actual_refs);
}
-static int tracking_branch_list_cb(const char *branch_name, git_branch_t branch_type, void *payload)
-{
- git_vector *tracking = (git_vector *)payload;
-
- if (branch_type == GIT_BRANCH_REMOTE)
- git_vector_insert(tracking, git__strdup(branch_name));
- else
- GIT_UNUSED(branch_name);
-
- return 0;
-}
-
/**
* Verifies that after git_push_update_tips(), remote tracking branches have the expected
* names and oids.
@@ -189,14 +177,24 @@ static void verify_tracking_branches(git_remote *remote, expected_ref expected_r
size_t i, j;
git_buf msg = GIT_BUF_INIT;
git_buf ref_name = GIT_BUF_INIT;
- git_buf canonical_ref_name = GIT_BUF_INIT;
git_vector actual_refs = GIT_VECTOR_INIT;
+ git_branch_iterator *iter;
char *actual_ref;
git_oid oid;
- int failed = 0;
+ int failed = 0, error;
+ unsigned int branch_type;
+ git_reference *ref;
/* Get current remote branches */
- cl_git_pass(git_branch_foreach(remote->repo, GIT_BRANCH_REMOTE, tracking_branch_list_cb, &actual_refs));
+ cl_git_pass(git_branch_iterator_new(&iter, remote->repo, GIT_BRANCH_REMOTE));
+
+ while ((error = git_branch_next(&ref, &branch_type, iter)) == 0) {
+ cl_assert_equal_i(branch_type, GIT_BRANCH_REMOTE);
+
+ cl_git_pass(git_vector_insert(&actual_refs, git__strdup(git_reference_name(ref))));
+ }
+
+ cl_assert_equal_i(error, GIT_ITEROVER);
/* Loop through expected refs, make sure they exist */
for (i = 0; i < expected_refs_len; i++) {
@@ -212,11 +210,7 @@ static void verify_tracking_branches(git_remote *remote, expected_ref expected_r
/* Find matching remote branch */
git_vector_foreach(&actual_refs, j, actual_ref) {
-
- /* Construct canonical ref name from the actual_ref name */
- git_buf_clear(&canonical_ref_name);
- cl_git_pass(git_buf_printf(&canonical_ref_name, "refs/remotes/%s", actual_ref));
- if (!strcmp(git_buf_cstr(&ref_name), git_buf_cstr(&canonical_ref_name)))
+ if (!strcmp(git_buf_cstr(&ref_name), actual_ref))
break;
}
@@ -227,7 +221,7 @@ static void verify_tracking_branches(git_remote *remote, expected_ref expected_r
}
/* Make sure tracking branch is at expected commit ID */
- cl_git_pass(git_reference_name_to_id(&oid, remote->repo, git_buf_cstr(&canonical_ref_name)));
+ cl_git_pass(git_reference_name_to_id(&oid, remote->repo, actual_ref));
if (git_oid_cmp(expected_refs[i].oid, &oid) != 0) {
git_buf_puts(&msg, "Tracking branch commit does not match expected ID.");
@@ -256,7 +250,6 @@ failed:
git_vector_free(&actual_refs);
git_buf_free(&msg);
- git_buf_free(&canonical_ref_name);
git_buf_free(&ref_name);
return;
}
diff --git a/tests-clar/refs/branches/foreach.c b/tests-clar/refs/branches/foreach.c
deleted file mode 100644
index 433812c..0000000
--- a/tests-clar/refs/branches/foreach.c
+++ /dev/null
@@ -1,173 +0,0 @@
-#include "clar_libgit2.h"
-#include "refs.h"
-
-static git_repository *repo;
-static git_reference *fake_remote;
-
-void test_refs_branches_foreach__initialize(void)
-{
- git_oid id;
-
- cl_fixture_sandbox("testrepo.git");
- cl_git_pass(git_repository_open(&repo, "testrepo.git"));
-
- cl_git_pass(git_oid_fromstr(&id, "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"));
- cl_git_pass(git_reference_create(&fake_remote, repo, "refs/remotes/nulltoken/master", &id, 0));
-}
-
-void test_refs_branches_foreach__cleanup(void)
-{
- git_reference_free(fake_remote);
- fake_remote = NULL;
-
- git_repository_free(repo);
- repo = NULL;
-
- cl_fixture_cleanup("testrepo.git");
-
- cl_git_sandbox_cleanup();
-}
-
-static int count_branch_list_cb(const char *branch_name, git_branch_t branch_type, void *payload)
-{
- int *count;
-
- GIT_UNUSED(branch_type);
- GIT_UNUSED(branch_name);
-
- count = (int *)payload;
- (*count)++;
-
- return 0;
-}
-
-static void assert_retrieval(unsigned int flags, unsigned int expected_count)
-{
- int count = 0;
-
- cl_git_pass(git_branch_foreach(repo, flags, count_branch_list_cb, &count));
-
- cl_assert_equal_i(expected_count, count);
-}
-
-void test_refs_branches_foreach__retrieve_all_branches(void)
-{
- assert_retrieval(GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE, 14);
-}
-
-void test_refs_branches_foreach__retrieve_remote_branches(void)
-{
- assert_retrieval(GIT_BRANCH_REMOTE, 2);
-}
-
-void test_refs_branches_foreach__retrieve_local_branches(void)
-{
- assert_retrieval(GIT_BRANCH_LOCAL, 12);
-}
-
-struct expectations {
- const char *branch_name;
- int encounters;
-};
-
-static void assert_branch_has_been_found(struct expectations *findings, const char* expected_branch_name)
-{
- int pos = 0;
-
- for (pos = 0; findings[pos].branch_name; ++pos) {
- if (strcmp(expected_branch_name, findings[pos].branch_name) == 0) {
- cl_assert_equal_i(1, findings[pos].encounters);
- return;
- }
- }
-
- cl_fail("expected branch not found in list.");
-}
-
-static int contains_branch_list_cb(const char *branch_name, git_branch_t branch_type, void *payload)
-{
- int pos = 0;
- struct expectations *exp;
-
- GIT_UNUSED(branch_type);
-
- exp = (struct expectations *)payload;
-
- for (pos = 0; exp[pos].branch_name; ++pos) {
- if (strcmp(branch_name, exp[pos].branch_name) == 0)
- exp[pos].encounters++;
- }
-
- return 0;
-}
-
-/*
- * $ git branch -r
- * nulltoken/HEAD -> nulltoken/master
- * nulltoken/master
- */
-void test_refs_branches_foreach__retrieve_remote_symbolic_HEAD_when_present(void)
-{
- struct expectations exp[] = {
- { "nulltoken/HEAD", 0 },
- { "nulltoken/master", 0 },
- { NULL, 0 }
- };
-
- git_reference_free(fake_remote);
- cl_git_pass(git_reference_symbolic_create(&fake_remote, repo, "refs/remotes/nulltoken/HEAD", "refs/remotes/nulltoken/master", 0));
-
- assert_retrieval(GIT_BRANCH_REMOTE, 3);
-
- cl_git_pass(git_branch_foreach(repo, GIT_BRANCH_REMOTE, contains_branch_list_cb, &exp));
-
- assert_branch_has_been_found(exp, "nulltoken/HEAD");
- assert_branch_has_been_found(exp, "nulltoken/master");
-}
-
-static int branch_list_interrupt_cb(
- const char *branch_name, git_branch_t branch_type, void *payload)
-{
- int *count;
-
- GIT_UNUSED(branch_type);
- GIT_UNUSED(branch_name);
-
- count = (int *)payload;
- (*count)++;
-
- return (*count == 5);
-}
-
-void test_refs_branches_foreach__can_cancel(void)
-{
- int count = 0;
-
- cl_assert_equal_i(GIT_EUSER,
- git_branch_foreach(repo, GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE,
- branch_list_interrupt_cb, &count));
-
- cl_assert_equal_i(5, count);
-}
-
-void test_refs_branches_foreach__mix_of_packed_and_loose(void)
-{
- struct expectations exp[] = {
- { "master", 0 },
- { "origin/HEAD", 0 },
- { "origin/master", 0 },
- { "origin/packed", 0 },
- { NULL, 0 }
- };
- git_repository *r2;
-
- r2 = cl_git_sandbox_init("testrepo2");
-
- cl_git_pass(git_branch_foreach(r2, GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE,
- contains_branch_list_cb, &exp));
-
- assert_branch_has_been_found(exp, "master");
- assert_branch_has_been_found(exp, "origin/HEAD");
- assert_branch_has_been_found(exp, "origin/master");
- assert_branch_has_been_found(exp, "origin/packed");
-}
diff --git a/tests-clar/refs/branches/iterator.c b/tests-clar/refs/branches/iterator.c
new file mode 100644
index 0000000..fb2c1a1
--- /dev/null
+++ b/tests-clar/refs/branches/iterator.c
@@ -0,0 +1,151 @@
+#include "clar_libgit2.h"
+#include "refs.h"
+
+static git_repository *repo;
+static git_reference *fake_remote;
+
+void test_refs_branches_iterator__initialize(void)
+{
+ git_oid id;
+
+ cl_fixture_sandbox("testrepo.git");
+ cl_git_pass(git_repository_open(&repo, "testrepo.git"));
+
+ cl_git_pass(git_oid_fromstr(&id, "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"));
+ cl_git_pass(git_reference_create(&fake_remote, repo, "refs/remotes/nulltoken/master", &id, 0));
+}
+
+void test_refs_branches_iterator__cleanup(void)
+{
+ git_reference_free(fake_remote);
+ fake_remote = NULL;
+
+ git_repository_free(repo);
+ repo = NULL;
+
+ cl_fixture_cleanup("testrepo.git");
+
+ cl_git_sandbox_cleanup();
+}
+
+static void assert_retrieval(unsigned int flags, unsigned int expected_count)
+{
+ git_branch_iterator *iter;
+ git_reference *ref;
+ int count = 0, error;
+ unsigned int type;
+
+ cl_git_pass(git_branch_iterator_new(&iter, repo, flags));
+ while ((error = git_branch_next(&ref, &type, iter)) == 0) {
+ count++;
+ git_reference_free(ref);
+ }
+
+ git_branch_iterator_free(iter);
+ cl_assert_equal_i(error, GIT_ITEROVER);
+ cl_assert_equal_i(expected_count, count);
+}
+
+void test_refs_branches_iterator__retrieve_all_branches(void)
+{
+ assert_retrieval(GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE, 14);
+}
+
+void test_refs_branches_iterator__retrieve_remote_branches(void)
+{
+ assert_retrieval(GIT_BRANCH_REMOTE, 2);
+}
+
+void test_refs_branches_iterator__retrieve_local_branches(void)
+{
+ assert_retrieval(GIT_BRANCH_LOCAL, 12);
+}
+
+struct expectations {
+ const char *branch_name;
+ int encounters;
+};
+
+static void assert_branch_has_been_found(struct expectations *findings, const char* expected_branch_name)
+{
+ int pos = 0;
+
+ for (pos = 0; findings[pos].branch_name; ++pos) {
+ if (strcmp(expected_branch_name, findings[pos].branch_name) == 0) {
+ cl_assert_equal_i(1, findings[pos].encounters);
+ return;
+ }
+ }
+
+ cl_fail("expected branch not found in list.");
+}
+
+static void contains_branches(struct expectations exp[], git_branch_iterator *iter)
+{
+ git_reference *ref;
+ unsigned int type;
+ int error, pos = 0;
+
+ while ((error = git_branch_next(&ref, &type, iter)) == 0) {
+ for (pos = 0; exp[pos].branch_name; ++pos) {
+ if (strcmp(git_reference_shorthand(ref), exp[pos].branch_name) == 0)
+ exp[pos].encounters++;
+ }
+
+ git_reference_free(ref);
+ }
+
+ cl_assert_equal_i(error, GIT_ITEROVER);
+}
+
+/*
+ * $ git branch -r
+ * nulltoken/HEAD -> nulltoken/master
+ * nulltoken/master
+ */
+void test_refs_branches_iterator__retrieve_remote_symbolic_HEAD_when_present(void)
+{
+ git_branch_iterator *iter;
+ struct expectations exp[] = {
+ { "nulltoken/HEAD", 0 },
+ { "nulltoken/master", 0 },
+ { NULL, 0 }
+ };
+
+ git_reference_free(fake_remote);
+ cl_git_pass(git_reference_symbolic_create(&fake_remote, repo, "refs/remotes/nulltoken/HEAD", "refs/remotes/nulltoken/master", 0));
+
+ assert_retrieval(GIT_BRANCH_REMOTE, 3);
+
+ cl_git_pass(git_branch_iterator_new(&iter, repo, GIT_BRANCH_REMOTE));
+ contains_branches(exp, iter);
+ git_branch_iterator_free(iter);
+
+ assert_branch_has_been_found(exp, "nulltoken/HEAD");
+ assert_branch_has_been_found(exp, "nulltoken/master");
+}
+
+void test_refs_branches_iterator__mix_of_packed_and_loose(void)
+{
+ git_branch_iterator *iter;
+ struct expectations exp[] = {
+ { "master", 0 },
+ { "origin/HEAD", 0 },
+ { "origin/master", 0 },
+ { "origin/packed", 0 },
+ { NULL, 0 }
+ };
+ git_repository *r2;
+
+ r2 = cl_git_sandbox_init("testrepo2");
+
+ cl_git_pass(git_branch_iterator_new(&iter, r2, GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE));
+ contains_branches(exp, iter);
+
+ git_branch_iterator_free(iter);
+
+ assert_branch_has_been_found(exp, "master");
+ assert_branch_has_been_found(exp, "origin/HEAD");
+ assert_branch_has_been_found(exp, "origin/master");
+ assert_branch_has_been_found(exp, "origin/packed");
+}