mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-06 09:41:04 +00:00
0a5c602889
The pair of `git_blob_create_frombuffer()` and `git_blob_create_frombuffer_commit()` is meant to replace `git_blob_create_fromchunks()` by providing a way for a user to write a new blob when they want filtering or they do not know the size. This approach allows the caller to retain control over when to add data to this buffer and a more natural fit into higher-level language's own stream abstractions instead of having to handle IO wait in the callback. The in-memory buffer size of 2MB is chosen somewhat arbitrarily to be a round multiple of usual page sizes and a value where most blobs seem likely to be either going to be way below or way over that size. It's also a round number of pages. This implementation re-uses the helper we have from `_fromchunks()` so we end up writing everything to disk, but hopefully more efficiently than with a default filebuf. A later optimisation can be to avoid writing the in-memory contents to disk, with some extra complexity.
104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
#include "clar_libgit2.h"
|
|
#include "buffer.h"
|
|
#include "posix.h"
|
|
#include "path.h"
|
|
#include "fileops.h"
|
|
|
|
static git_repository *repo;
|
|
static char textual_content[] = "libgit2\n\r\n\0";
|
|
|
|
void test_object_blob_fromstream__initialize(void)
|
|
{
|
|
repo = cl_git_sandbox_init("testrepo.git");
|
|
}
|
|
|
|
void test_object_blob_fromstream__cleanup(void)
|
|
{
|
|
cl_git_sandbox_cleanup();
|
|
}
|
|
|
|
static int text_chunked_source_cb(char *content, size_t max_length, void *payload)
|
|
{
|
|
int *count;
|
|
|
|
GIT_UNUSED(max_length);
|
|
|
|
count = (int *)payload;
|
|
(*count)--;
|
|
|
|
if (*count == 0)
|
|
return 0;
|
|
|
|
strcpy(content, textual_content);
|
|
return (int)strlen(textual_content);
|
|
}
|
|
|
|
void test_object_blob_fromstream__multiple_write(void)
|
|
{
|
|
git_oid expected_id, id;
|
|
git_object *blob;
|
|
git_writestream *stream;
|
|
int i, howmany = 6;
|
|
|
|
cl_git_pass(git_oid_fromstr(&expected_id, "321cbdf08803c744082332332838df6bd160f8f9"));
|
|
|
|
cl_git_fail_with(GIT_ENOTFOUND,
|
|
git_object_lookup(&blob, repo, &expected_id, GIT_OBJ_ANY));
|
|
|
|
cl_git_pass(git_blob_create_fromstream(&stream, repo, NULL));
|
|
|
|
for (i = 0; i < howmany; i++)
|
|
cl_git_pass(stream->write(stream, textual_content, strlen(textual_content)));
|
|
|
|
cl_git_pass(git_blob_create_fromstream_end(&id, stream));
|
|
cl_assert_equal_oid(&expected_id, &id);
|
|
|
|
cl_git_pass(git_object_lookup(&blob, repo, &expected_id, GIT_OBJ_BLOB));
|
|
|
|
git_object_free(blob);
|
|
}
|
|
|
|
#define GITATTR "* text=auto\n" \
|
|
"*.txt text\n" \
|
|
"*.data binary\n"
|
|
|
|
static void write_attributes(git_repository *repo)
|
|
{
|
|
git_buf buf = GIT_BUF_INIT;
|
|
|
|
cl_git_pass(git_buf_joinpath(&buf, git_repository_path(repo), "info"));
|
|
cl_git_pass(git_buf_joinpath(&buf, git_buf_cstr(&buf), "attributes"));
|
|
|
|
cl_git_pass(git_futils_mkpath2file(git_buf_cstr(&buf), 0777));
|
|
cl_git_rewritefile(git_buf_cstr(&buf), GITATTR);
|
|
|
|
git_buf_free(&buf);
|
|
}
|
|
|
|
static void assert_named_chunked_blob(const char *expected_sha, const char *fake_name)
|
|
{
|
|
git_oid expected_id, id;
|
|
git_writestream *stream;
|
|
int i, howmany = 6;
|
|
|
|
cl_git_pass(git_oid_fromstr(&expected_id, expected_sha));
|
|
|
|
cl_git_pass(git_blob_create_fromstream(&stream, repo, fake_name));
|
|
|
|
for (i = 0; i < howmany; i++)
|
|
cl_git_pass(stream->write(stream, textual_content, strlen(textual_content)));
|
|
|
|
cl_git_pass(git_blob_create_fromstream_end(&id, stream));
|
|
|
|
cl_assert_equal_oid(&expected_id, &id);
|
|
}
|
|
|
|
void test_object_blob_fromstream__creating_a_blob_from_chunks_honors_the_attributes_directives(void)
|
|
{
|
|
write_attributes(repo);
|
|
|
|
assert_named_chunked_blob("321cbdf08803c744082332332838df6bd160f8f9", "dummy.data");
|
|
assert_named_chunked_blob("e9671e138a780833cb689753570fd10a55be84fb", "dummy.txt");
|
|
assert_named_chunked_blob("e9671e138a780833cb689753570fd10a55be84fb", "dummy.dunno");
|
|
}
|