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New API: git_index_find_prefix

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Find the first index entry matching a prefix.
This commit is contained in:
Leo Yang 2015-08-17 15:02:02 -04:00
parent 1cef6b9f19
commit c097f7173d
3 changed files with 56 additions and 0 deletions
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11
include/git2/index.h
View File

@ -643,6 +643,17 @@ GIT_EXTERN(int) git_index_update_all(
*/
GIT_EXTERN(int) git_index_find(size_t *at_pos, git_index *index, const char *path);
/**
* Find the first position of any entries matching a prefix. To find the first position
* of a path inside a given folder, suffix the prefix with a '/'.
*
* @param at_pos the address to which the position of the index entry is written (optional)
* @param index an existing index object
* @param prefix the prefix to search for
* @return 0 with valid value in at_pos; an error code otherwise
*/
GIT_EXTERN(int) git_index_find_prefix(size_t *at_pos, git_index *index, const char *prefix);
/**@}*/
/** @name Conflict Index Entry Functions

24
src/index.c
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@ -1420,6 +1420,30 @@ int git_index_remove_directory(git_index *index, const char *dir, int stage)
return error;
}
int git_index_find_prefix(size_t *at_pos, git_index *index, const char *prefix)
{
int error = 0;
size_t pos;
const git_index_entry *entry;
if (git_mutex_lock(&index->lock) < 0) {
giterr_set(GITERR_OS, "Failed to lock index");
return -1;
}
index_find(&pos, index, prefix, strlen(prefix), GIT_INDEX_STAGE_ANY, false);
entry = git_vector_get(&index->entries, pos);
if (!entry || git__prefixcmp(entry->path, prefix) != 0)
error = GIT_ENOTFOUND;
if (!error && at_pos)
*at_pos = pos;
git_mutex_unlock(&index->lock);
return error;
}
int git_index__find_pos(
size_t *out, git_index *index, const char *path, size_t path_len, int stage)
{

21
tests/index/tests.c
View File

@ -155,6 +155,27 @@ void test_index_tests__find_in_empty(void)
git_index_free(index);
}
void test_index_tests__find_prefix(void)
{
git_index *index;
const git_index_entry *entry;
size_t pos;
cl_git_pass(git_index_open(&index, TEST_INDEX_PATH));
cl_git_pass(git_index_find_prefix(&pos, index, "src"));
entry = git_index_get_byindex(index, pos);
cl_assert(git__strcmp(entry->path, "src/block-sha1/sha1.c") == 0);
cl_git_pass(git_index_find_prefix(&pos, index, "src/co"));
entry = git_index_get_byindex(index, pos);
cl_assert(git__strcmp(entry->path, "src/commit.c") == 0);
cl_assert(GIT_ENOTFOUND == git_index_find_prefix(NULL, index, "blah"));
git_index_free(index);
}
void test_index_tests__write(void)
{
git_index *index;