int
Repository_contains(Repository *self, PyObject *value)
{
git_oid oid;
git_odb *odb;
int err, len, exists;
len = py_str_to_git_oid(value, &oid);
if (len < 0)
return -1;
err = git_repository_odb(&odb, self->repo);
if (err < 0) {
Error_set(err);
return -1;
}
if (len < GIT_OID_HEXSZ) {
git_odb_object *obj = NULL;
err = git_odb_read_prefix(&obj, odb, &oid, len);
if (err < 0 && err != GIT_ENOTFOUND) {
Error_set(err);
exists = -1;
} else {
exists = (err == 0);
if (obj)
git_odb_object_free(obj);
}
} else {
exists = git_odb_exists(odb, &oid);
}
git_odb_free(odb);
return exists;
}
int git_revwalk_new(git_revwalk **revwalk_out, git_repository *repo)
{
git_revwalk *walk = git__calloc(1, sizeof(git_revwalk));
GITERR_CHECK_ALLOC(walk);
walk->commits = git_oidmap_alloc();
GITERR_CHECK_ALLOC(walk->commits);
if (git_pqueue_init(
&walk->iterator_time, 0, 8, git_commit_list_time_cmp) < 0 ||
git_pool_init(&walk->commit_pool, 1,
git_pool__suggest_items_per_page(COMMIT_ALLOC) * COMMIT_ALLOC) < 0)
return -1;
walk->get_next = &revwalk_next_unsorted;
walk->enqueue = &revwalk_enqueue_unsorted;
walk->repo = repo;
if (git_repository_odb(&walk->odb, repo) < 0) {
git_revwalk_free(walk);
return -1;
}
*revwalk_out = walk;
return 0;
}
static int
checksum_submodule (struct TreeWalkData *parent_twdata, git_submodule *sub)
{
int r = 1;
const git_oid *sub_head;
struct TreeWalkData child_twdata = { FALSE, parent_twdata->evtag, NULL, NULL,
parent_twdata->cancellable,
parent_twdata->error };
parent_twdata->evtag->n_submodules++;
r = git_submodule_open (&child_twdata.repo, sub);
if (!handle_libgit_ret (r, child_twdata.error))
goto out;
r = git_repository_odb (&child_twdata.odb, child_twdata.repo);
if (!handle_libgit_ret (r, child_twdata.error))
goto out;
sub_head = git_submodule_wd_id (sub);
if (!checksum_commit_contents (&child_twdata, sub_head,
child_twdata.cancellable, child_twdata.error))
goto out;
r = 0;
out:
if (r > 0)
child_twdata.caught_error = TRUE;
if (child_twdata.repo)
git_repository_free (child_twdata.repo);
if (child_twdata.odb)
git_odb_free (child_twdata.odb);
return r;
}
int git_merge_file_input_from_diff_file(
git_merge_file_input *input,
git_repository *repo,
const git_diff_file *file)
{
git_odb *odb = NULL;
int error = 0;
assert(input && repo && file);
if (file->mode == 0)
return 0;
if ((error = git_repository_odb(&odb, repo)) < 0 ||
(error = git_odb_read(&input->odb_object, odb, &file->oid)) < 0)
goto done;
input->mode = file->mode;
input->path = git__strdup(file->path);
input->mmfile.size = git_odb_object_size(input->odb_object);
input->mmfile.ptr = (char *)git_odb_object_data(input->odb_object);
if (input->label == NULL)
input->label = file->path;
done:
git_odb_free(odb);
return error;
}
int
py_str_to_git_oid_expand(git_repository *repo, PyObject *py_str, git_oid *oid)
{
int err;
int len;
git_odb *odb;
git_odb_object *obj;
len = py_str_to_git_oid(py_str, oid);
if (len == GIT_OID_HEXSZ || len < 0)
return len;
err = git_repository_odb(&odb, repo);
if (err < 0) {
Error_set(err);
return -1;
}
err = git_odb_read_prefix(&obj, odb, oid, len);
if (err < 0) {
git_odb_free(odb);
Error_set(err);
return err;
}
git_oid_cpy(oid, git_odb_object_id(obj));
git_odb_object_free(obj);
git_odb_free(odb);
return 0;
}
void test_pack_indexer__corrupt_length(void)
{
git_indexer *idx = NULL;
git_transfer_progress stats = { 0 };
git_repository *repo;
git_odb *odb;
git_oid id, should_id;
cl_git_pass(git_repository_init(&repo, "thin.git", true));
cl_git_pass(git_repository_odb(&odb, repo));
/* Store the missing base into your ODB so the indexer can fix the pack */
cl_git_pass(git_odb_write(&id, odb, base_obj, base_obj_len, GIT_OBJ_BLOB));
git_oid_fromstr(&should_id, "e68fe8129b546b101aee9510c5328e7f21ca1d18");
cl_assert_equal_oid(&should_id, &id);
cl_git_pass(git_indexer_new(&idx, ".", 0, odb, NULL, NULL));
cl_git_pass(git_indexer_append(
idx, corrupt_thin_pack, corrupt_thin_pack_len, &stats));
cl_git_fail(git_indexer_commit(idx, &stats));
cl_assert(giterr_last() != NULL);
cl_assert_equal_i(giterr_last()->klass, GITERR_ZLIB);
git_indexer_free(idx);
git_odb_free(odb);
git_repository_free(repo);
}
static void *cache_raw(void *arg)
{
int i;
git_oid oid;
git_odb *odb;
git_odb_object *odb_obj;
cl_git_pass(git_repository_odb(&odb, g_repo));
for (i = ((int *)arg)[1]; g_data[i].sha != NULL; i += 2) {
cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
git_odb_object_free(odb_obj);
}
for (i = 0; i < ((int *)arg)[1]; i += 2) {
cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
git_odb_object_free(odb_obj);
}
git_odb_free(odb);
return arg;
}
int
py_oid_to_git_oid_expand(git_repository *repo, PyObject *py_str, git_oid *oid)
{
int err;
size_t len;
git_odb *odb = NULL;
git_odb_object *obj = NULL;
len = py_oid_to_git_oid(py_str, oid);
if (len == 0)
return -1;
if (len == GIT_OID_HEXSZ)
return 0;
/* Short oid */
err = git_repository_odb(&odb, repo);
if (err < 0)
goto error;
err = git_odb_read_prefix(&obj, odb, oid, len);
if (err < 0)
goto error;
git_oid_cpy(oid, git_odb_object_id(obj));
git_odb_object_free(obj);
git_odb_free(odb);
return 0;
error:
git_odb_object_free(obj);
git_odb_free(odb);
Error_set(err);
return -1;
}
static gboolean
checksum_commit_recurse (struct EvTag *self,
git_oid *specified_oid,
guint64 *out_elapsed_time,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int r;
guint64 checksum_start_time;
guint64 checksum_end_time;
checksum_start_time = g_get_monotonic_time ();
{
struct TreeWalkData twdata = { FALSE, self, self->top_repo, NULL, cancellable, error };
r = git_repository_odb (&twdata.odb, self->top_repo);
if (!handle_libgit_ret (r, error))
goto out;
if (!checksum_commit_contents (&twdata, specified_oid, cancellable, error))
goto out;
}
checksum_end_time = g_get_monotonic_time ();
ret = TRUE;
if (out_elapsed_time)
*out_elapsed_time = checksum_end_time - checksum_start_time;
out:
return ret;
}
void mne_git_load_blobs(const char *path) {
mne_git_initialize();
printf("\nLoading blobs...\n\n");
gettimeofday(&begin, NULL);
git_repository_open(&repo, path);
git_repository_odb(&odb, repo);
git_strarray tag_names;
git_tag_list(&tag_names, repo);
total_refs = tag_names.count + 1; /* + 1 for HEAD. */
ref_names = malloc(sizeof(char*) * total_refs);
mne_git_walk_ctx ctx;
ctx.bytes = 0;
ctx.ref_index = 0;
mne_git_walk_head(&ctx);
mne_git_walk_tags(&ctx, &tag_names);
git_strarray_free(&tag_names);
git_repository_free(repo);
gettimeofday(&end, NULL);
float mb = ctx.bytes / 1048576.0;
printf("\nLoaded %d blobs (%.2fmb) ", g_hash_table_size(blobs), mb);
mne_print_duration(&end, &begin);
printf(".\n");
}
PyObject *
Repository_write(Repository *self, PyObject *args)
{
int err;
git_oid oid;
git_odb *odb;
git_odb_stream* stream;
int type_id;
const char* buffer;
Py_ssize_t buflen;
git_otype type;
if (!PyArg_ParseTuple(args, "Is#", &type_id, &buffer, &buflen))
return NULL;
type = int_to_loose_object_type(type_id);
if (type == GIT_OBJ_BAD)
return PyErr_Format(PyExc_ValueError, "%d", type_id);
err = git_repository_odb(&odb, self->repo);
if (err < 0)
return Error_set(err);
err = git_odb_open_wstream(&stream, odb, buflen, type);
git_odb_free(odb);
if (err < 0)
return Error_set(err);
stream->write(stream, buffer, buflen);
err = stream->finalize_write(&oid, stream);
stream->free(stream);
return git_oid_to_python(oid.id);
}
/*
* $ git --git-dir tests-clar/resources/testrepo.git count-objects --verbose
* count: 43
* size: 3
* in-pack: 1640
* packs: 3
* size-pack: 425
* prune-packable: 0
* garbage: 0
*/
void test_odb_foreach__foreach(void)
{
cl_git_pass(git_repository_open(&_repo, cl_fixture("testrepo.git")));
git_repository_odb(&_odb, _repo);
cl_git_pass(git_odb_foreach(_odb, foreach_cb, NULL));
cl_assert_equal_i(46 + 1640, nobj); /* count + in-pack */
}
void test_index_collision__initialize(void)
{
g_repo = cl_git_sandbox_init("empty_standard_repo");
cl_git_pass(git_repository_odb(&g_odb, g_repo));
cl_git_pass(git_repository_index(&g_index, g_repo));
cl_git_pass(git_odb_write(&g_empty_id, g_odb, "", 0, GIT_OBJ_BLOB));
}
void test_odb_foreach__interrupt_foreach(void)
{
nobj = 0;
cl_git_pass(git_repository_open(&_repo, cl_fixture("testrepo.git")));
git_repository_odb(&_odb, _repo);
cl_assert_equal_i(GIT_EUSER, git_odb_foreach(_odb, foreach_stop_cb, NULL));
cl_assert(nobj == 1000);
}
void test_odb_foreach__interrupt_foreach(void)
{
int nobj = 0;
git_oid id;
cl_git_pass(git_repository_open(&_repo, cl_fixture("testrepo.git")));
git_repository_odb(&_odb, _repo);
cl_assert_equal_i(-321, git_odb_foreach(_odb, foreach_stop_cb, &nobj));
cl_assert(nobj == 1000);
git_odb_free(_odb);
git_repository_free(_repo);
cl_git_pass(git_repository_init(&_repo, "onlyloose.git", true));
git_repository_odb(&_odb, _repo);
cl_git_pass(git_odb_write(&id, _odb, "", 0, GIT_OBJECT_BLOB));
cl_assert_equal_i(-123, git_odb_foreach(_odb, foreach_stop_first_cb, &nobj));
}
int repository_create_memory_cb(git_repository **out, const char *path, int bare, void *payload) {
git_odb *odb = NULL;
git_odb_backend *odb_mem = NULL;
int error;
if ( (error = git_repository_init(out, path, bare)) ||
(error = git_repository_odb(&odb, *out)) ||
(error = git_odb_backend_memory(&odb_mem)) ||
(error = git_odb_add_backend(odb, odb_mem, 999))) {
// TODO: free?
return error;
}
return GIT_OK;
}
void test_odb_backend_nobackend__write_fails_gracefully(void)
{
git_oid id;
git_odb *odb;
const git_error *err;
git_repository_odb(&odb, _repo);
cl_git_fail(git_odb_write(&id, odb, "Hello world!\n", 13, GIT_OBJ_BLOB));
err = giterr_last();
cl_assert_equal_s(err->message, "cannot write object - unsupported in the loaded odb backends");
git_odb_free(odb);
}
void test_object_cache__cache_everything(void)
{
int i, start;
git_oid oid;
git_odb_object *odb_obj;
git_object *obj;
git_odb *odb;
git_libgit2_opts(
GIT_OPT_SET_CACHE_OBJECT_LIMIT, (int)GIT_OBJ_BLOB, (size_t)32767);
cl_git_pass(git_repository_open(&g_repo, cl_fixture("testrepo.git")));
cl_git_pass(git_repository_odb(&odb, g_repo));
start = (int)git_cache_size(&g_repo->objects);
for (i = 0; g_data[i].sha != NULL; ++i) {
int count = (int)git_cache_size(&g_repo->objects);
cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
/* alternate between loading raw and parsed objects */
if ((i & 1) == 0) {
cl_git_pass(git_odb_read(&odb_obj, odb, &oid));
cl_assert(g_data[i].type == git_odb_object_type(odb_obj));
git_odb_object_free(odb_obj);
} else {
cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
cl_assert(g_data[i].type == git_object_type(obj));
git_object_free(obj);
}
cl_assert_equal_i(count + 1, (int)git_cache_size(&g_repo->objects));
}
cl_assert_equal_i(i, (int)git_cache_size(&g_repo->objects) - start);
git_odb_free(odb);
for (i = 0; g_data[i].sha != NULL; ++i) {
int count = (int)git_cache_size(&g_repo->objects);
cl_git_pass(git_oid_fromstr(&oid, g_data[i].sha));
cl_git_pass(git_object_lookup(&obj, g_repo, &oid, GIT_OBJ_ANY));
cl_assert(g_data[i].type == git_object_type(obj));
git_object_free(obj);
cl_assert_equal_i(count, (int)git_cache_size(&g_repo->objects));
}
}
static void commit_result(char* msg, git_oid *commit){
git_odb *odb;
check_lg2(git_repository_odb(&odb, repo),
"Could not allocate odb poiner", NULL);
check_lg2(git_odb_write(commit, odb, &msg[PREAMBLE_LENGTH], MSG_LENGTH, GIT_OBJ_COMMIT),
"Error writing commit", NULL);
check_lg2(git_reference_create(NULL, repo, "refs/heads/master", commit, 1),
"Could not update head", NULL);
git_odb_free(odb);
}
void test_repo_getters__retrieving_the_odb_honors_the_refcount(void)
{
git_odb *odb;
git_repository *repo;
cl_git_pass(git_repository_open(&repo, "testrepo.git"));
cl_git_pass(git_repository_odb(&odb, repo));
cl_assert(((git_refcount *)odb)->refcount == 2);
git_repository_free(repo);
cl_assert(((git_refcount *)odb)->refcount == 1);
git_odb_free(odb);
}
int cmd_write_tree(int argc, const char **argv)
{
please_git_do_it_for_me();
int verify_index = 1;
if (argc == 1)
verify_index = 1;
else if (argc == 2 && strcmp(argv[1], "--missing-ok") == 0 )
verify_index = 0;
else
please_git_do_it_for_me();
char sha1buf[GIT_OID_HEXSZ + 1];
git_repository *repo = get_git_repository();
git_index *index_cur;
int e = git_repository_index(&index_cur, repo);
if(e != GIT_OK)
libgit_error();
/* check the index */
if (verify_index) {
git_odb * odb;
git_repository_odb(&odb, repo);
for (unsigned i = 0; i < git_index_entrycount(index_cur); i++) {
git_index_entry *gie = git_index_get(index_cur, i);
if (git_odb_exists(odb, &gie->oid) != 1) {
printf("error: invalid object %06o %s for '%s'\n", gie->mode, git_oid_tostr(sha1buf, GIT_OID_HEXSZ+1, &gie->oid), gie->path);
printf("fatal: git-write-tree: error building trees\n");
return EXIT_FAILURE;
}
}
}
/* create the tree */
git_oid oid;
e = git_tree_create_fromindex(&oid, index_cur);
if(e != GIT_OK)
libgit_error();
printf("%s\n", git_oid_tostr(sha1buf, GIT_OID_HEXSZ+1, &oid));
return EXIT_SUCCESS;
}
void test_clone_nonetwork__clone_tag_to_tree(void)
{
git_repository *stage;
git_index_entry entry;
git_index *index;
git_odb *odb;
git_oid tree_id;
git_tree *tree;
git_reference *tag;
git_tree_entry *tentry;
const char *file_path = "some/deep/path.txt";
const char *file_content = "some content\n";
const char *tag_name = "refs/tags/tree-tag";
stage = cl_git_sandbox_init("testrepo.git");
cl_git_pass(git_repository_odb(&odb, stage));
cl_git_pass(git_index_new(&index));
memset(&entry, 0, sizeof(git_index_entry));
entry.path = file_path;
entry.mode = GIT_FILEMODE_BLOB;
cl_git_pass(git_odb_write(&entry.id, odb, file_content, strlen(file_content), GIT_OBJ_BLOB));
cl_git_pass(git_index_add(index, &entry));
cl_git_pass(git_index_write_tree_to(&tree_id, index, stage));
cl_git_pass(git_reference_create(&tag, stage, tag_name, &tree_id, 0, NULL));
git_reference_free(tag);
git_odb_free(odb);
git_index_free(index);
g_options.local = GIT_CLONE_NO_LOCAL;
cl_git_pass(git_clone(&g_repo, cl_git_path_url(git_repository_path(stage)), "./foo", &g_options));
git_repository_free(stage);
cl_git_pass(git_reference_lookup(&tag, g_repo, tag_name));
cl_git_pass(git_tree_lookup(&tree, g_repo, git_reference_target(tag)));
git_reference_free(tag);
cl_git_pass(git_tree_entry_bypath(&tentry, tree, file_path));
git_tree_entry_free(tentry);
git_tree_free(tree);
cl_fixture_cleanup("testrepo.git");
}
PyObject *
Repository_as_iter(Repository *self)
{
git_odb *odb;
int err;
PyObject *accum = PyList_New(0);
err = git_repository_odb(&odb, self->repo);
if (err < 0)
return Error_set(err);
err = git_odb_foreach(odb, Repository_build_as_iter, (void*)accum);
git_odb_free(odb);
if (err == GIT_EUSER)
return NULL;
if (err < 0)
return Error_set(err);
return PyObject_GetIter(accum);
}
int git_object_short_id(git_buf *out, const git_object *obj)
{
git_repository *repo;
int len = GIT_ABBREV_DEFAULT, error;
git_oid id = {{0}};
git_odb *odb;
assert(out && obj);
git_buf_sanitize(out);
repo = git_object_owner(obj);
if ((error = git_repository__cvar(&len, repo, GIT_CVAR_ABBREV)) < 0)
return error;
if ((error = git_repository_odb(&odb, repo)) < 0)
return error;
while (len < GIT_OID_HEXSZ) {
/* set up short oid */
memcpy(&id.id, &obj->cached.oid.id, (len + 1) / 2);
if (len & 1)
id.id[len / 2] &= 0xf0;
error = git_odb_exists_prefix(NULL, odb, &id, len);
if (error != GIT_EAMBIGUOUS)
break;
giterr_clear();
len++;
}
if (!error && !(error = git_buf_grow(out, len + 1))) {
git_oid_tostr(out->ptr, len + 1, &id);
out->size = len;
}
git_odb_free(odb);
return error;
}
git_odb_object *
Repository_read_raw(git_repository *repo, const git_oid *oid, size_t len)
{
git_odb *odb;
git_odb_object *obj;
int err;
err = git_repository_odb(&odb, repo);
if (err < 0) {
Error_set(err);
return NULL;
}
err = git_odb_read_prefix(&obj, odb, oid, (unsigned int)len);
git_odb_free(odb);
if (err < 0) {
Error_set_oid(err, oid, len);
return NULL;
}
return obj;
}
void test_odb_foreach__files_in_objects_dir(void)
{
git_repository *repo;
git_odb *odb;
git_buf buf = GIT_BUF_INIT;
int nobj = 0;
cl_fixture_sandbox("testrepo.git");
cl_git_pass(git_repository_open(&repo, "testrepo.git"));
cl_git_pass(git_buf_printf(&buf, "%s/objects/somefile", git_repository_path(repo)));
cl_git_mkfile(buf.ptr, "");
git_buf_dispose(&buf);
cl_git_pass(git_repository_odb(&odb, repo));
cl_git_pass(git_odb_foreach(odb, foreach_cb, &nobj));
cl_assert_equal_i(60 + 1640, nobj); /* count + in-pack */
git_odb_free(odb);
git_repository_free(repo);
cl_fixture_cleanup("testrepo.git");
}
int main (int argc, char** argv)
{
// ### Opening the Repository
// There are a couple of methods for opening a repository, this being the simplest.
// There are also [methods][me] for specifying the index file and work tree locations, here
// we are assuming they are in the normal places.
//
// [me]: http://libgit2.github.com/libgit2/#HEAD/group/repository
git_repository *repo;
if (argc > 1) {
git_repository_open(&repo, argv[1]);
} else {
git_repository_open(&repo, "/opt/libgit2-test/.git");
}
// ### SHA-1 Value Conversions
// For our first example, we will convert a 40 character hex value to the 20 byte raw SHA1 value.
printf("*Hex to Raw*\n");
char hex[] = "fd6e612585290339ea8bf39c692a7ff6a29cb7c3";
// The `git_oid` is the structure that keeps the SHA value. We will use this throughout the example
// for storing the value of the current SHA key we're working with.
git_oid oid;
git_oid_fromstr(&oid, hex);
// Once we've converted the string into the oid value, we can get the raw value of the SHA.
printf("Raw 20 bytes: [%.20s]\n", (&oid)->id);
// Next we will convert the 20 byte raw SHA1 value to a human readable 40 char hex value.
printf("\n*Raw to Hex*\n");
char out[41];
out[40] = '\0';
// If you have a oid, you can easily get the hex value of the SHA as well.
git_oid_fmt(out, &oid);
printf("SHA hex string: %s\n", out);
// ### Working with the Object Database
// **libgit2** provides [direct access][odb] to the object database.
// The object database is where the actual objects are stored in Git. For
// working with raw objects, we'll need to get this structure from the
// repository.
// [odb]: http://libgit2.github.com/libgit2/#HEAD/group/odb
git_odb *odb;
git_repository_odb(&odb, repo);
// #### Raw Object Reading
printf("\n*Raw Object Read*\n");
git_odb_object *obj;
git_otype otype;
const unsigned char *data;
const char *str_type;
int error;
// We can read raw objects directly from the object database if we have the oid (SHA)
// of the object. This allows us to access objects without knowing thier type and inspect
// the raw bytes unparsed.
error = git_odb_read(&obj, odb, &oid);
// A raw object only has three properties - the type (commit, blob, tree or tag), the size
// of the raw data and the raw, unparsed data itself. For a commit or tag, that raw data
// is human readable plain ASCII text. For a blob it is just file contents, so it could be
// text or binary data. For a tree it is a special binary format, so it's unlikely to be
// hugely helpful as a raw object.
data = (const unsigned char *)git_odb_object_data(obj);
otype = git_odb_object_type(obj);
// We provide methods to convert from the object type which is an enum, to a string
// representation of that value (and vice-versa).
str_type = git_object_type2string(otype);
printf("object length and type: %d, %s\n",
(int)git_odb_object_size(obj),
str_type);
// For proper memory management, close the object when you are done with it or it will leak
// memory.
git_odb_object_free(obj);
// #### Raw Object Writing
printf("\n*Raw Object Write*\n");
// You can also write raw object data to Git. This is pretty cool because it gives you
// direct access to the key/value properties of Git. Here we'll write a new blob object
// that just contains a simple string. Notice that we have to specify the object type as
// the `git_otype` enum.
git_odb_write(&oid, odb, "test data", sizeof("test data") - 1, GIT_OBJ_BLOB);
// Now that we've written the object, we can check out what SHA1 was generated when the
// object was written to our database.
git_oid_fmt(out, &oid);
printf("Written Object: %s\n", out);
// ### Object Parsing
// libgit2 has methods to parse every object type in Git so you don't have to work directly
// with the raw data. This is much faster and simpler than trying to deal with the raw data
// yourself.
// #### Commit Parsing
// [Parsing commit objects][pco] is simple and gives you access to all the data in the commit
// - the // author (name, email, datetime), committer (same), tree, message, encoding and parent(s).
// [pco]: http://libgit2.github.com/libgit2/#HEAD/group/commit
printf("\n*Commit Parsing*\n");
git_commit *commit;
git_oid_fromstr(&oid, "f0877d0b841d75172ec404fc9370173dfffc20d1");
error = git_commit_lookup(&commit, repo, &oid);
const git_signature *author, *cmtter;
const char *message;
time_t ctime;
unsigned int parents, p;
// Each of the properties of the commit object are accessible via methods, including commonly
// needed variations, such as `git_commit_time` which returns the author time and `_message`
// which gives you the commit message.
message = git_commit_message(commit);
author = git_commit_author(commit);
cmtter = git_commit_committer(commit);
ctime = git_commit_time(commit);
// The author and committer methods return [git_signature] structures, which give you name, email
// and `when`, which is a `git_time` structure, giving you a timestamp and timezone offset.
printf("Author: %s (%s)\n", author->name, author->email);
// Commits can have zero or more parents. The first (root) commit will have no parents, most commits
// will have one, which is the commit it was based on, and merge commits will have two or more.
// Commits can technically have any number, though it's pretty rare to have more than two.
parents = git_commit_parentcount(commit);
for (p = 0;p < parents;p++) {
git_commit *parent;
git_commit_parent(&parent, commit, p);
git_oid_fmt(out, git_commit_id(parent));
printf("Parent: %s\n", out);
git_commit_free(parent);
}
// Don't forget to close the object to prevent memory leaks. You will have to do this for
// all the objects you open and parse.
git_commit_free(commit);
// #### Writing Commits
//
// libgit2 provides a couple of methods to create commit objects easily as well. There are four
// different create signatures, we'll just show one of them here. You can read about the other
// ones in the [commit API docs][cd].
// [cd]: http://libgit2.github.com/libgit2/#HEAD/group/commit
printf("\n*Commit Writing*\n");
git_oid tree_id, parent_id, commit_id;
git_tree *tree;
git_commit *parent;
// Creating signatures for an authoring identity and time is pretty simple - you will need to have
// this to create a commit in order to specify who created it and when. Default values for the name
// and email should be found in the `user.name` and `user.email` configuration options. See the `config`
// section of this example file to see how to access config values.
git_signature_new((git_signature **)&author, "Scott Chacon", "*****@*****.**",
123456789, 60);
git_signature_new((git_signature **)&cmtter, "Scott A Chacon", "*****@*****.**",
987654321, 90);
// Commit objects need a tree to point to and optionally one or more parents. Here we're creating oid
// objects to create the commit with, but you can also use
git_oid_fromstr(&tree_id, "28873d96b4e8f4e33ea30f4c682fd325f7ba56ac");
git_tree_lookup(&tree, repo, &tree_id);
git_oid_fromstr(&parent_id, "f0877d0b841d75172ec404fc9370173dfffc20d1");
git_commit_lookup(&parent, repo, &parent_id);
// Here we actually create the commit object with a single call with all the values we need to create
// the commit. The SHA key is written to the `commit_id` variable here.
git_commit_create_v(
&commit_id, /* out id */
repo,
NULL, /* do not update the HEAD */
author,
cmtter,
NULL, /* use default message encoding */
"example commit",
tree,
1, parent);
// Now we can take a look at the commit SHA we've generated.
git_oid_fmt(out, &commit_id);
printf("New Commit: %s\n", out);
// #### Tag Parsing
// You can parse and create tags with the [tag management API][tm], which functions very similarly
// to the commit lookup, parsing and creation methods, since the objects themselves are very similar.
// [tm]: http://libgit2.github.com/libgit2/#HEAD/group/tag
printf("\n*Tag Parsing*\n");
git_tag *tag;
const char *tmessage, *tname;
git_otype ttype;
// We create an oid for the tag object if we know the SHA and look it up in the repository the same
// way that we would a commit (or any other) object.
git_oid_fromstr(&oid, "bc422d45275aca289c51d79830b45cecebff7c3a");
error = git_tag_lookup(&tag, repo, &oid);
// Now that we have the tag object, we can extract the information it generally contains: the target
// (usually a commit object), the type of the target object (usually 'commit'), the name ('v1.0'),
// the tagger (a git_signature - name, email, timestamp), and the tag message.
git_tag_target((git_object **)&commit, tag);
tname = git_tag_name(tag); // "test"
ttype = git_tag_type(tag); // GIT_OBJ_COMMIT (otype enum)
tmessage = git_tag_message(tag); // "tag message\n"
printf("Tag Message: %s\n", tmessage);
git_commit_free(commit);
// #### Tree Parsing
// [Tree parsing][tp] is a bit different than the other objects, in that we have a subtype which is the
// tree entry. This is not an actual object type in Git, but a useful structure for parsing and
// traversing tree entries.
//
// [tp]: http://libgit2.github.com/libgit2/#HEAD/group/tree
printf("\n*Tree Parsing*\n");
const git_tree_entry *entry;
git_object *objt;
// Create the oid and lookup the tree object just like the other objects.
git_oid_fromstr(&oid, "2a741c18ac5ff082a7caaec6e74db3075a1906b5");
git_tree_lookup(&tree, repo, &oid);
// Getting the count of entries in the tree so you can iterate over them if you want to.
int cnt = git_tree_entrycount(tree); // 3
printf("tree entries: %d\n", cnt);
entry = git_tree_entry_byindex(tree, 0);
printf("Entry name: %s\n", git_tree_entry_name(entry)); // "hello.c"
// You can also access tree entries by name if you know the name of the entry you're looking for.
entry = git_tree_entry_byname(tree, "hello.c");
git_tree_entry_name(entry); // "hello.c"
// Once you have the entry object, you can access the content or subtree (or commit, in the case
// of submodules) that it points to. You can also get the mode if you want.
git_tree_entry_to_object(&objt, repo, entry); // blob
// Remember to close the looked-up object once you are done using it
git_object_free(objt);
// #### Blob Parsing
//
// The last object type is the simplest and requires the least parsing help. Blobs are just file
// contents and can contain anything, there is no structure to it. The main advantage to using the
// [simple blob api][ba] is that when you're creating blobs you don't have to calculate the size
// of the content. There is also a helper for reading a file from disk and writing it to the db and
// getting the oid back so you don't have to do all those steps yourself.
//
// [ba]: http://libgit2.github.com/libgit2/#HEAD/group/blob
printf("\n*Blob Parsing*\n");
git_blob *blob;
git_oid_fromstr(&oid, "af7574ea73f7b166f869ef1a39be126d9a186ae0");
git_blob_lookup(&blob, repo, &oid);
// You can access a buffer with the raw contents of the blob directly.
// Note that this buffer may not be contain ASCII data for certain blobs (e.g. binary files):
// do not consider the buffer a NULL-terminated string, and use the `git_blob_rawsize` attribute to
// find out its exact size in bytes
printf("Blob Size: %ld\n", git_blob_rawsize(blob)); // 8
git_blob_rawcontent(blob); // "content"
// ### Revwalking
//
// The libgit2 [revision walking api][rw] provides methods to traverse the directed graph created
// by the parent pointers of the commit objects. Since all commits point back to the commit that
// came directly before them, you can walk this parentage as a graph and find all the commits that
// were ancestors of (reachable from) a given starting point. This can allow you to create `git log`
// type functionality.
//
// [rw]: http://libgit2.github.com/libgit2/#HEAD/group/revwalk
printf("\n*Revwalking*\n");
git_revwalk *walk;
git_commit *wcommit;
git_oid_fromstr(&oid, "f0877d0b841d75172ec404fc9370173dfffc20d1");
// To use the revwalker, create a new walker, tell it how you want to sort the output and then push
// one or more starting points onto the walker. If you want to emulate the output of `git log` you
// would push the SHA of the commit that HEAD points to into the walker and then start traversing them.
// You can also 'hide' commits that you want to stop at or not see any of their ancestors. So if you
// want to emulate `git log branch1..branch2`, you would push the oid of `branch2` and hide the oid
// of `branch1`.
git_revwalk_new(&walk, repo);
git_revwalk_sorting(walk, GIT_SORT_TOPOLOGICAL | GIT_SORT_REVERSE);
git_revwalk_push(walk, &oid);
const git_signature *cauth;
const char *cmsg;
// Now that we have the starting point pushed onto the walker, we can start asking for ancestors. It
// will return them in the sorting order we asked for as commit oids.
// We can then lookup and parse the commited pointed at by the returned OID;
// note that this operation is specially fast since the raw contents of the commit object will
// be cached in memory
while ((git_revwalk_next(&oid, walk)) == 0) {
error = git_commit_lookup(&wcommit, repo, &oid);
cmsg = git_commit_message(wcommit);
cauth = git_commit_author(wcommit);
printf("%s (%s)\n", cmsg, cauth->email);
git_commit_free(wcommit);
}
// Like the other objects, be sure to free the revwalker when you're done to prevent memory leaks.
// Also, make sure that the repository being walked it not deallocated while the walk is in
// progress, or it will result in undefined behavior
git_revwalk_free(walk);
// ### Index File Manipulation
//
// The [index file API][gi] allows you to read, traverse, update and write the Git index file
// (sometimes thought of as the staging area).
//
// [gi]: http://libgit2.github.com/libgit2/#HEAD/group/index
printf("\n*Index Walking*\n");
git_index *index;
unsigned int i, ecount;
// You can either open the index from the standard location in an open repository, as we're doing
// here, or you can open and manipulate any index file with `git_index_open_bare()`. The index
// for the repository will be located and loaded from disk.
git_repository_index(&index, repo);
// For each entry in the index, you can get a bunch of information including the SHA (oid), path
// and mode which map to the tree objects that are written out. It also has filesystem properties
// to help determine what to inspect for changes (ctime, mtime, dev, ino, uid, gid, file_size and flags)
// All these properties are exported publicly in the `git_index_entry` struct
ecount = git_index_entrycount(index);
for (i = 0; i < ecount; ++i) {
git_index_entry *e = git_index_get(index, i);
printf("path: %s\n", e->path);
printf("mtime: %d\n", (int)e->mtime.seconds);
printf("fs: %d\n", (int)e->file_size);
}
git_index_free(index);
// ### References
//
// The [reference API][ref] allows you to list, resolve, create and update references such as
// branches, tags and remote references (everything in the .git/refs directory).
//
// [ref]: http://libgit2.github.com/libgit2/#HEAD/group/reference
printf("\n*Reference Listing*\n");
// Here we will implement something like `git for-each-ref` simply listing out all available
// references and the object SHA they resolve to.
git_strarray ref_list;
git_reference_list(&ref_list, repo, GIT_REF_LISTALL);
const char *refname;
git_reference *ref;
// Now that we have the list of reference names, we can lookup each ref one at a time and
// resolve them to the SHA, then print both values out.
for (i = 0; i < ref_list.count; ++i) {
refname = ref_list.strings[i];
git_reference_lookup(&ref, repo, refname);
switch (git_reference_type(ref)) {
case GIT_REF_OID:
git_oid_fmt(out, git_reference_oid(ref));
printf("%s [%s]\n", refname, out);
break;
case GIT_REF_SYMBOLIC:
printf("%s => %s\n", refname, git_reference_target(ref));
break;
default:
fprintf(stderr, "Unexpected reference type\n");
exit(1);
}
}
git_strarray_free(&ref_list);
// ### Config Files
//
// The [config API][config] allows you to list and updatee config values in
// any of the accessible config file locations (system, global, local).
//
// [config]: http://libgit2.github.com/libgit2/#HEAD/group/config
printf("\n*Config Listing*\n");
const char *email;
int32_t j;
git_config *cfg;
// Open a config object so we can read global values from it.
git_config_open_ondisk(&cfg, "~/.gitconfig");
git_config_get_int32(cfg, "help.autocorrect", &j);
printf("Autocorrect: %d\n", j);
git_config_get_string(cfg, "user.email", &email);
printf("Email: %s\n", email);
// Finally, when you're done with the repository, you can free it as well.
git_repository_free(repo);
return 0;
}
/* The wiki handler */
static int wiki_handler(request_rec *r)
{
wiki_conf *conf;
git_repository *repo;
const git_oid *tree_oid;
char *path;
const git_oid *oid;
char hash[41];
hash[40] = '\0';
int ret;
int type;
MMIOT *doc;
if (strcmp(r->handler, "wiki")) {
return DECLINED;
}
if (r->header_only) {
return OK;
}
conf =
(wiki_conf *) ap_get_module_config(r->per_dir_config,
&wiki_module);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "filename=%s",
r->filename);
if (conf->basepath) {
path = ltrim(conf->basepath, r->parsed_uri.path);
} else {
path = r->parsed_uri.path + 1;
}
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "path=%s", path);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"r->content_type=%s", r->content_type);
if (conf->repo == NULL) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"WikiRepository is not set.");
return HTTP_INTERNAL_SERVER_ERROR;
}
ret = git_repository_open(&repo, conf->repo);
if (ret) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"Cannot open git repository.(%s)", conf->repo);
return HTTP_INTERNAL_SERVER_ERROR;
}
tree_oid = lookup_master_tree(repo);
if (tree_oid == NULL) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"Not found master tree.");
git_repository_free(repo);
}
type = lookup_object_oid(r, repo, tree_oid, path, &oid);
if (type == WIKI_NOTFOUND) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"Object is not found.");
git_repository_free(repo);
return HTTP_NOT_FOUND;
} else if(type == WIKI_DIR) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"Directory listing is not implement yet.");
git_repository_free(repo);
return HTTP_FORBIDDEN;
} else if(type == WIKI_ERROR) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"Error at lookup.");
git_repository_free(repo);
return HTTP_NOT_FOUND;
}
git_oid_fmt(hash, oid);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "object hash=%s", hash);
const char *data;
size_t size;
git_odb *odb;
ret = git_repository_odb(&odb, repo);
git_odb_object *odb_object;
ret = git_odb_read(&odb_object, odb, oid);
data = git_odb_object_data(odb_object);
size = git_odb_object_size(odb_object);
git_odb_object_free(odb_object); // is this safe?
if (type == WIKI_FOUND) {
ap_rwrite(data, size, r);
} else if(type == WIKI_MARKDOWN) {
r->content_type = "text/html";
doc = mkd_string(data, size, 0);
if (doc == NULL) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"mkd_string() returned NULL\n");
git_repository_free(repo);
return HTTP_INTERNAL_SERVER_ERROR;
}
wiki_output(doc, r);
mkd_cleanup(doc);
} else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"Unknown Error.\n");
git_repository_free(repo);
return HTTP_INTERNAL_SERVER_ERROR;
}
git_repository_free(repo);
return OK;
}
int git_blob__create_from_paths(
git_oid *id,
struct stat *out_st,
git_repository *repo,
const char *content_path,
const char *hint_path,
mode_t hint_mode,
bool try_load_filters)
{
int error;
struct stat st;
git_odb *odb = NULL;
git_off_t size;
mode_t mode;
git_buf path = GIT_BUF_INIT;
assert(hint_path || !try_load_filters);
if (!content_path) {
if (git_repository__ensure_not_bare(repo, "create blob from file") < 0)
return GIT_EBAREREPO;
if (git_buf_joinpath(
&path, git_repository_workdir(repo), hint_path) < 0)
return -1;
content_path = path.ptr;
}
if ((error = git_path_lstat(content_path, &st)) < 0 ||
(error = git_repository_odb(&odb, repo)) < 0)
goto done;
if (S_ISDIR(st.st_mode)) {
giterr_set(GITERR_ODB, "cannot create blob from '%s': it is a directory", content_path);
error = GIT_EDIRECTORY;
goto done;
}
if (out_st)
memcpy(out_st, &st, sizeof(st));
size = st.st_size;
mode = hint_mode ? hint_mode : st.st_mode;
if (S_ISLNK(mode)) {
error = write_symlink(id, odb, content_path, (size_t)size);
} else {
git_filter_list *fl = NULL;
if (try_load_filters)
/* Load the filters for writing this file to the ODB */
error = git_filter_list_load(
&fl, repo, NULL, hint_path,
GIT_FILTER_TO_ODB, GIT_FILTER_DEFAULT);
if (error < 0)
/* well, that didn't work */;
else if (fl == NULL)
/* No filters need to be applied to the document: we can stream
* directly from disk */
error = write_file_stream(id, odb, content_path, size);
else {
/* We need to apply one or more filters */
error = write_file_filtered(id, &size, odb, content_path, fl);
git_filter_list_free(fl);
}
/*
* TODO: eventually support streaming filtered files, for files
* which are bigger than a given threshold. This is not a priority
* because applying a filter in streaming mode changes the final
* size of the blob, and without knowing its final size, the blob
* cannot be written in stream mode to the ODB.
*
* The plan is to do streaming writes to a tempfile on disk and then
* opening streaming that file to the ODB, using
* `write_file_stream`.
*
* CAREFULLY DESIGNED APIS YO
*/
}
done:
git_odb_free(odb);
git_buf_dispose(&path);
return error;
}
void test_odb_largefiles__initialize(void)
{
repo = cl_git_sandbox_init("testrepo.git");
cl_git_pass(git_repository_odb(&odb, repo));
}
