static int find_subtree_in_current_level(
git_tree **out,
git_repository *repo,
git_tree *parent,
const char *annotated_object_sha,
int fanout)
{
size_t i;
const git_tree_entry *entry;
*out = NULL;
if (parent == NULL)
return GIT_ENOTFOUND;
for (i = 0; i < git_tree_entrycount(parent); i++) {
entry = git_tree_entry_byindex(parent, i);
if (!git__ishex(git_tree_entry_name(entry)))
continue;
if (S_ISDIR(git_tree_entry_filemode(entry))
&& strlen(git_tree_entry_name(entry)) == 2
&& !strncmp(git_tree_entry_name(entry), annotated_object_sha + fanout, 2))
return git_tree_lookup(out, repo, git_tree_entry_id(entry));
/* Not a DIR, so do we have an already existing blob? */
if (!strcmp(git_tree_entry_name(entry), annotated_object_sha + fanout))
return GIT_EEXISTS;
}
return GIT_ENOTFOUND;
}
void test_object_tree_read__two(void)
{
/* read a tree from the repository */
git_oid id;
git_tree *tree;
const git_tree_entry *entry;
git_object *obj;
git_oid_fromstr(&id, tree_oid);
cl_git_pass(git_tree_lookup(&tree, g_repo, &id));
cl_assert(git_tree_entrycount(tree) == 3);
/* GH-86: git_object_lookup() should also check the type if the object comes from the cache */
cl_assert(git_object_lookup(&obj, g_repo, &id, GIT_OBJECT_TREE) == 0);
cl_assert(obj != NULL);
git_object_free(obj);
obj = NULL;
cl_git_fail(git_object_lookup(&obj, g_repo, &id, GIT_OBJECT_BLOB));
cl_assert(obj == NULL);
entry = git_tree_entry_byname(tree, "README");
cl_assert(entry != NULL);
cl_assert_equal_s(git_tree_entry_name(entry), "README");
cl_git_pass(git_tree_entry_to_object(&obj, g_repo, entry));
cl_assert(obj != NULL);
git_object_free(obj);
git_tree_free(tree);
}
static VALUE rb_git_treeentry_fromC(const git_tree_entry *entry)
{
VALUE rb_entry;
VALUE type;
if (!entry)
return Qnil;
rb_entry = rb_hash_new();
rb_hash_aset(rb_entry, CSTR2SYM("name"), rugged_str_new2(git_tree_entry_name(entry), NULL));
rb_hash_aset(rb_entry, CSTR2SYM("oid"), rugged_create_oid(git_tree_entry_id(entry)));
rb_hash_aset(rb_entry, CSTR2SYM("filemode"), INT2FIX(git_tree_entry_filemode(entry)));
switch(git_tree_entry_type(entry)) {
case GIT_OBJ_TREE:
type = CSTR2SYM("tree");
break;
case GIT_OBJ_BLOB:
type = CSTR2SYM("blob");
break;
default:
type = Qnil;
break;
}
rb_hash_aset(rb_entry, CSTR2SYM("type"), type);
return rb_entry;
}
static int walk_tree_file(const char *root, const git_tree_entry *entry, git_repository *repo)
{
struct dive *dive = active_dive;
dive_trip_t *trip = active_trip;
const char *name = git_tree_entry_name(entry);
switch (*name) {
/* Picture file? They are saved as time offsets in the dive */
case '-': case '+':
if (dive)
return parse_picture_entry(repo, entry, name);
break;
case 'D':
if (dive && !strncmp(name, "Divecomputer", 12))
return parse_divecomputer_entry(repo, entry, name+12);
if (dive && !strncmp(name, "Dive", 4))
return parse_dive_entry(repo, entry, name+4);
break;
case '0':
if (trip && !strcmp(name, "00-Trip"))
return parse_trip_entry(repo, entry);
if (!strcmp(name, "00-Subsurface"))
return parse_settings_entry(repo, entry);
break;
}
report_error("Unknown file %s%s (%p %p)", root, name, dive, trip);
return GIT_WALK_SKIP;
}
int CRepositoryBrowser::ReadTreeRecursive(git_repository &repo, git_tree * tree, CShadowFilesTree * treeroot)
{
size_t count = git_tree_entrycount(tree);
for (size_t i = 0; i < count; ++i)
{
const git_tree_entry *entry = git_tree_entry_byindex(tree, i);
if (entry == NULL)
continue;
const int mode = git_tree_entry_filemode(entry);
CString base = CUnicodeUtils::GetUnicode(git_tree_entry_name(entry), CP_UTF8);
const git_oid *oid = git_tree_entry_id(entry);
CShadowFilesTree * pNextTree = &treeroot->m_ShadowTree[base];
pNextTree->m_sName = base;
pNextTree->m_pParent = treeroot;
pNextTree->m_hash = CGitHash((char *)oid->id);
if (mode == GIT_FILEMODE_COMMIT)
pNextTree->m_bSubmodule = true;
else if (mode & S_IFDIR)
{
pNextTree->m_bFolder = true;
TVINSERTSTRUCT tvinsert = {0};
tvinsert.hParent = treeroot->m_hTree;
tvinsert.hInsertAfter = TVI_SORT;
tvinsert.itemex.mask = TVIF_DI_SETITEM | TVIF_PARAM | TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_STATE;
tvinsert.itemex.pszText = base.GetBuffer(base.GetLength());
tvinsert.itemex.lParam = (LPARAM)pNextTree;
tvinsert.itemex.iImage = m_nIconFolder;
tvinsert.itemex.iSelectedImage = m_nOpenIconFolder;
pNextTree->m_hTree = m_RepoTree.InsertItem(&tvinsert);
base.ReleaseBuffer();
git_object *object = nullptr;
git_tree_entry_to_object(&object, &repo, entry);
if (object == nullptr)
continue;
ReadTreeRecursive(repo, (git_tree*)object, pNextTree);
git_object_free(object);
}
else
{
git_blob * blob = nullptr;
git_blob_lookup(&blob, &repo, oid);
if (blob == NULL)
continue;
pNextTree->m_iSize = git_blob_rawsize(blob);
git_blob_free(blob);
}
}
return 0;
}
static VALUE rb_git_tree_entry_name_GET(VALUE self)
{
rugged_tree_entry *tree_entry;
Data_Get_Struct(self, rugged_tree_entry, tree_entry);
return rugged_str_new2(git_tree_entry_name(tree_entry->entry), NULL);
}
void add_tree_to_index(git_tree * tree, const char * prefix) {
for (size_t i = 0; i < git_tree_entrycount(tree); i++) {
/* Get the tree entry */
const git_tree_entry *tree_entry;
tree_entry = git_tree_entry_byindex(tree,(unsigned int)i);
if (tree_entry == NULL) {
printf("Tree entry not found");
libgit_error();
}
/* Get the oid of a tree entry */
const git_oid *entry_oid = git_tree_entry_id (tree_entry);
/* is a sub directory ? */
git_tree * subtree;
if (git_tree_lookup(&subtree, repo, entry_oid) == 0) {
char * subprefix = xmalloc(sizeof(char)*1024);
const char * dirname = git_tree_entry_name (tree_entry);
git2__joinpath(subprefix, prefix, dirname);
add_tree_to_index(subtree, subprefix);
continue;
}
char * completename = xmalloc(sizeof(char)*1024);
git2__joinpath(completename, prefix, git_tree_entry_name (tree_entry));
git_index_entry source_entry = {
{0,0},//git_index_time ctime
{0,0},//git_index_time mtime
0,//unsigned int dev
0,//unsigned int ino
git_tree_entry_attributes(tree_entry),//unsigned int mode
0,//unsigned int uid
0,//unsigned int gid
0,//git_off_t file_size
*entry_oid,
0,
0,//unsigned short flags_extended
completename
};
git_index_append2(index_cur, &source_entry);
}
}
static void assert_workdir_matches_tree(
git_repository *repo, const git_oid *id, const char *root, bool recurse)
{
git_object *obj;
git_tree *tree;
size_t i, max_i;
git_buf path = GIT_BUF_INIT;
if (!root)
root = git_repository_workdir(repo);
cl_assert(root);
cl_git_pass(git_object_lookup(&obj, repo, id, GIT_OBJ_ANY));
cl_git_pass(git_object_peel((git_object **)&tree, obj, GIT_OBJ_TREE));
git_object_free(obj);
max_i = git_tree_entrycount(tree);
for (i = 0; i < max_i; ++i) {
const git_tree_entry *te = git_tree_entry_byindex(tree, i);
cl_assert(te);
cl_git_pass(git_buf_joinpath(&path, root, git_tree_entry_name(te)));
switch (git_tree_entry_type(te)) {
case GIT_OBJ_COMMIT:
assert_dir_exists(path.ptr);
break;
case GIT_OBJ_TREE:
assert_dir_exists(path.ptr);
if (recurse)
assert_workdir_matches_tree(
repo, git_tree_entry_id(te), path.ptr, true);
break;
case GIT_OBJ_BLOB:
switch (git_tree_entry_filemode(te)) {
case GIT_FILEMODE_BLOB:
case GIT_FILEMODE_BLOB_EXECUTABLE:
assert_file_exists(path.ptr);
/* because of cross-platform, don't confirm exec bit yet */
break;
case GIT_FILEMODE_LINK:
cl_assert_(git_path_exists(path.ptr), path.ptr);
/* because of cross-platform, don't confirm link yet */
break;
default:
cl_assert(false); /* really?! */
}
break;
default:
cl_assert(false); /* really?!! */
}
}
git_tree_free(tree);
git_buf_free(&path);
}
PyObject *
TreeEntry_repr(TreeEntry *self)
{
char str[GIT_OID_HEXSZ + 1] = { 0 };
const char *typename;
typename = git_object_type2string(git_tree_entry_type(self->entry));
git_oid_fmt(str, git_tree_entry_id(self->entry));
return PyString_FromFormat("pygit2.TreeEntry('%s', %s, %s)", git_tree_entry_name(self->entry), typename, str);
}
static size_t copy_entries(AGBMergeEntry * entries, const git_tree * tree, enum AGBMergeIndex idx) {
size_t n = git_tree_entrycount(tree);
size_t i;
for(i=0; i<n; ++i) {
const git_tree_entry * gte = git_tree_entry_byindex(tree,i);
entries[i].name = git_tree_entry_name(gte);
entries[i].treeentries[idx] = gte;
}
return n;
}
static int read_tree_recursive(git_tree_cache *cache, const git_tree *tree, git_pool *pool)
{
git_repository *repo;
size_t i, j, nentries, ntrees;
int error;
repo = git_tree_owner(tree);
git_oid_cpy(&cache->oid, git_tree_id(tree));
nentries = git_tree_entrycount(tree);
/*
* We make sure we know how many trees we need to allocate for
* so we don't have to realloc and change the pointers for the
* parents.
*/
ntrees = 0;
for (i = 0; i < nentries; i++) {
const git_tree_entry *entry;
entry = git_tree_entry_byindex(tree, i);
if (git_tree_entry_filemode(entry) == GIT_FILEMODE_TREE)
ntrees++;
}
cache->children_count = ntrees;
cache->children = git_pool_mallocz(pool, ntrees * sizeof(git_tree_cache *));
GITERR_CHECK_ALLOC(cache->children);
j = 0;
for (i = 0; i < nentries; i++) {
const git_tree_entry *entry;
git_tree *subtree;
entry = git_tree_entry_byindex(tree, i);
if (git_tree_entry_filemode(entry) != GIT_FILEMODE_TREE)
continue;
if ((error = git_tree_cache_new(&cache->children[j], git_tree_entry_name(entry), pool)) < 0)
return error;
if ((error = git_tree_lookup(&subtree, repo, git_tree_entry_id(entry))) < 0)
return error;
error = read_tree_recursive(cache->children[j], subtree, pool);
git_tree_free(subtree);
j++;
if (error < 0)
return error;
}
return 0;
}
int
read_repo(const char *repo_name)
{
int i;
int r;
int n;
git_repository *repo;
git_reference *head;
git_oid oid;
git_commit *commit;
git_tree *tree;
git_tree_entry *tree_entry;
char out[41];
out[40] = '\0';
// opening the repository
r = git_repository_open(&repo, repo_name);
if (r)
printf("error in opening the repository\n");
printf("Opened the repository successfully.\n");
// obtaining the head
r = git_repository_head(&head, repo);
if (r)
printf("error in obtaining the head\n");
r = git_reference_name_to_oid(&oid, repo, git_reference_name(head));
if (r)
printf("error in obtaining the ref id of head\n");
printf("Obtained the head id %s\n", git_oid_tostr(out, 41, &oid));
// obtaining the commit from commit id
r = git_commit_lookup(&commit, repo, &oid);
if (r)
printf("error in obtaining the commit from oid\n");
printf("Obtained the commit.\n");
// obtaining the tree id from the commit
oid = *git_commit_tree_oid(commit);
// get the tree
r = git_tree_lookup(&tree, repo, &oid);
if (r)
printf("error in looking up the tree for oid\n");
printf("Lookup for tree of oid successful.\n");
n = git_tree_entrycount(tree);
for (i=0; i<n; i++) {
tree_entry = git_tree_entry_byindex(tree, i);
printf("entry >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> %s %s\n", git_tree_entry_name(tree_entry), git_object_type2string(git_tree_entry_type(tree_entry)));
}
git_repository_free(repo);
return 0;
}
static void assert_tree_from_path(
git_tree *root,
const char *path,
const char *expected_entry_name)
{
git_tree_entry *entry;
cl_git_pass(git_tree_entry_bypath(&entry, root, path));
cl_assert_equal_s(git_tree_entry_name(entry), expected_entry_name);
git_tree_entry_free(entry);
}
static int TreewalkCB_FindFileRecentCommit(const char *root, const git_tree_entry *entry, void *payload)
{
TreewalkStruct *treewalkstruct = (TreewalkStruct *)payload;
char folder[MAX_PATH] = {0};
strcpy_s(folder, root);
strcat_s(folder, git_tree_entry_name(entry));
strcat_s(folder, "/");
if (strstr(treewalkstruct->folder, folder))
return 0;
if (!strcmp(treewalkstruct->folder, root))
{
if (!strcmp(git_tree_entry_name(entry), treewalkstruct->name))
{
git_oid_cpy(&treewalkstruct->oid, git_tree_entry_id(entry));
return GIT_EUSER;
}
return 1;
}
return 1;
}
int ReadTreeRecursive(git_repository &repo, git_tree * tree, CStringA base, int (*CallBack) (const unsigned char *, const char *, int, const char *, unsigned int, int, void *),void *data)
{
size_t count = git_tree_entrycount(tree);
for (int i = 0; i < count; i++)
{
const git_tree_entry *entry = git_tree_entry_byindex(tree, i);
if (entry == NULL)
continue;
int mode = git_tree_entry_attributes(entry);
if( CallBack(git_tree_entry_id(entry)->id,
base,
base.GetLength(),
git_tree_entry_name(entry),
mode,
0,
data) == READ_TREE_RECURSIVE
)
{
if(mode&S_IFDIR)
{
git_object *object = NULL;
git_tree_entry_2object(&object, &repo, entry);
if (object == NULL)
continue;
CStringA parent = base;
parent += git_tree_entry_name(entry);
parent += "/";
ReadTreeRecursive(repo, (git_tree*)object, parent, CallBack, data);
git_object_free(object);
}
}
}
return 0;
}
static int walk_tree_file(const char *root, const git_tree_entry *entry, git_repository *repo)
{
struct dive *dive = active_dive;
dive_trip_t *trip = active_trip;
const char *name = git_tree_entry_name(entry);
if (dive && !strncmp(name, "Divecomputer", 12))
return parse_divecomputer_entry(repo, entry, name+12);
if (dive && !strncmp(name, "Dive", 4))
return parse_dive_entry(repo, entry, name+4);
if (trip && !strcmp(name, "00-Trip"))
return parse_trip_entry(repo, entry);
if (!strcmp(name, "00-Subsurface"))
return parse_settings_entry(repo, entry);
report_error("Unknown file %s%s (%p %p)", root, name, dive, trip);
return GIT_WALK_SKIP;
}
static int find_blob(git_oid *blob, git_tree *tree, const char *target)
{
size_t i;
const git_tree_entry *entry;
for (i=0; i<git_tree_entrycount(tree); i++) {
entry = git_tree_entry_byindex(tree, i);
if (!strcmp(git_tree_entry_name(entry), target)) {
/* found matching note object - return */
git_oid_cpy(blob, git_tree_entry_id(entry));
return 0;
}
}
return GIT_ENOTFOUND;
}
/** Show each entry with its type, id and attributes */
static void show_tree(const git_tree *tree)
{
size_t i, max_i = (int)git_tree_entrycount(tree);
char oidstr[GIT_OID_HEXSZ + 1];
const git_tree_entry *te;
for (i = 0; i < max_i; ++i) {
te = git_tree_entry_byindex(tree, i);
git_oid_tostr(oidstr, sizeof(oidstr), git_tree_entry_id(te));
printf("%06o %s %s\t%s\n",
git_tree_entry_filemode(te),
git_object_type2string(git_tree_entry_type(te)),
oidstr, git_tree_entry_name(te));
}
}
static int
checksum_tree_callback (const char *root,
const git_tree_entry *entry,
void *data)
{
int iter_r = 1;
int tmp_r;
struct TreeWalkData *twdata = data;
git_otype otype = git_tree_entry_type (entry);
switch (otype)
{
case GIT_OBJ_TREE:
case GIT_OBJ_BLOB:
if (!checksum_object_id (twdata, git_tree_entry_id (entry),
twdata->error))
{
twdata->caught_error = TRUE;
return -1;
}
break;
case GIT_OBJ_COMMIT:
{
git_submodule *submod = NULL;
tmp_r = git_submodule_lookup (&submod, twdata->repo, git_tree_entry_name (entry));
if (!handle_libgit_ret (tmp_r, twdata->error))
goto out;
tmp_r = checksum_submodule (twdata, submod);
if (tmp_r != 0)
goto out;
git_submodule_free (submod);
}
break;
default:
g_assert_not_reached ();
}
iter_r = 0;
out:
if (iter_r > 0)
twdata->caught_error = TRUE;
return iter_r;
}
/*
* When hitting a directory node, we have a couple of cases:
*
* - It's just a date entry - all numeric (either year or month):
*
* [yyyy|mm]
*
* We don't do anything with these, we just traverse into them.
* The numeric data will show up as part of the full path when
* we hit more interesting entries.
*
* - It's a trip directory. The name will be of the form
*
* nn-alphabetic[~hex]
*
* where 'nn' is the day of the month (year and month will be
* encoded in the path leading up to this).
*
* - It's a dive directory. The name will be of the form
*
* [[yyyy-]mm-]nn-ddd-hh=mm=ss[~hex]
*
* (older versions had this as [[yyyy-]mm-]nn-ddd-hh:mm:ss[~hex]
* but that faile on Windows)
*
* which describes the date and time of a dive (yyyy and mm
* are optional, and may be encoded in the path leading up to
* the dive).
*
* - It is a per-dive picture directory ("Pictures")
*
* - It's some random non-dive-data directory.
*
* If it doesn't match the above patterns, we'll ignore them
* for dive loading purposes, and not even recurse into them.
*/
static int walk_tree_directory(const char *root, const git_tree_entry *entry)
{
const char *name = git_tree_entry_name(entry);
int digits = 0, len;
char c;
if (!strcmp(name, "Pictures"))
return picture_directory(root, name);
if (!strcmp(name, "01-Divesites"))
return GIT_WALK_OK;
while (isdigit(c = name[digits]))
digits++;
/* Doesn't start with two or four digits? Skip */
if (digits != 4 && digits != 2)
return GIT_WALK_SKIP;
/* Only digits? Do nothing, but recurse into it */
if (!c)
return GIT_WALK_OK;
/* All valid cases need to have a slash following */
if (c != '-')
return GIT_WALK_SKIP;
/* Do a quick check for a common dive case */
len = nonunique_length(name);
/*
* We know the len is at least 3, because we had at least
* two digits and a dash
*/
if (name[len-3] == ':' || name[len-3] == '=')
return dive_directory(root, name, len-8);
if (digits != 2)
return GIT_WALK_SKIP;
return dive_trip_directory(root, name);
}
/**
* Merges two tree objects, producing a third tree.
* The base tree allows the algorithm to distinguish between adds and deletes.
* The algorithm always prefers the item from tree 1 when there is a conflict.
*/
static int sync_merge_trees(git_oid *out,
git_repository *repo,
const git_oid *base_id,
const git_oid *id1,
const git_oid *id2)
{
int e = 0;
git_tree *base_tree = NULL;
git_tree *tree1 = NULL;
git_tree *tree2 = NULL;
git_treebuilder *tb = NULL;
size_t size1, size2;
size_t i1 = 0;
size_t i2 = 0;
const git_tree_entry *e1 = NULL;
const git_tree_entry *e2 = NULL;
enum { ONLY1 = 1, ONLY2 = 2, BOTH = 3 } state = BOTH;
git_check(git_tree_lookup(&base_tree, repo, base_id));
git_check(git_tree_lookup(&tree1, repo, id1));
git_check(git_tree_lookup(&tree2, repo, id2));
git_check(git_treebuilder_new(&tb, repo, NULL));
size1 = git_tree_entrycount(tree1);
size2 = git_tree_entrycount(tree2);
while (1)
{
// Advance to next file:
if (state == ONLY1 || state == BOTH)
{
e1 = i1 < size1 ? git_tree_entry_byindex(tree1, i1++) : NULL;
}
if (state == ONLY2 || state == BOTH)
{
e2 = i2 < size2 ? git_tree_entry_byindex(tree2, i2++) : NULL;
}
// Determine state:
if (e1 && e2)
{
int s = strcmp(git_tree_entry_name(e1), git_tree_entry_name(e2));
state = s < 0 ? ONLY1 :
s > 0 ? ONLY2 :
BOTH;
}
else if (e1 && !e2)
{
state = ONLY1;
}
else if (!e1 && e2)
{
state = ONLY2;
}
else
{
break;
}
// Grab the entry in question:
const git_tree_entry *entry =
(state == ONLY1 || state == BOTH) ? e1 : e2;
const git_tree_entry *base_entry =
git_tree_entry_byname(base_tree, git_tree_entry_name(entry));
// Decide what to do with the entry:
if (state == BOTH && base_entry &&
GIT_OBJ_TREE == git_tree_entry_type(e1) &&
GIT_OBJ_TREE == git_tree_entry_type(e2) &&
GIT_OBJ_TREE == git_tree_entry_type(base_entry))
{
// Merge sub-trees:
git_oid new_tree;
git_check(sync_merge_trees(&new_tree, repo,
git_tree_entry_id(base_entry),
git_tree_entry_id(e1),
git_tree_entry_id(e2)));
git_check(git_treebuilder_insert(NULL, tb,
git_tree_entry_name(e1),
&new_tree,
git_tree_entry_filemode(e1)));
}
else if (state == BOTH && base_entry)
{
if (git_oid_cmp(git_tree_entry_id(base_entry), git_tree_entry_id(e1)))
{
// Entry `e1` has changes, so use that:
git_check(git_treebuilder_insert(NULL, tb,
git_tree_entry_name(e1),
git_tree_entry_id(e1),
git_tree_entry_filemode(e1)));
}
else
{
// Entry `e1` has no changes, so use `e2`:
git_check(git_treebuilder_insert(NULL, tb,
git_tree_entry_name(e2),
git_tree_entry_id(e2),
git_tree_entry_filemode(e2)));
}
}
else if (state == BOTH || !base_entry)
{
// Entry was added, or already present:
git_check(git_treebuilder_insert(NULL, tb,
git_tree_entry_name(entry),
git_tree_entry_id(entry),
git_tree_entry_filemode(entry)));
}
// Otherwise, the entry was deleted.
}
// Write tree:
git_check(git_treebuilder_write(out, tb));
exit:
if (base_tree) git_tree_free(base_tree);
if (tree1) git_tree_free(tree1);
if (tree2) git_tree_free(tree2);
if (tb) git_treebuilder_free(tb);
return e;
}
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;
}
PyObject *
TreeEntry__name__get__(TreeEntry *self)
{
return PyBytes_FromString(git_tree_entry_name(self->entry));
}
static int treebuilder_filter_prefixed(
const git_tree_entry *entry, void *payload)
{
return !git__prefixcmp(git_tree_entry_name(entry), payload);
}
void test_object_tree_write__cruel_paths(void)
{
static const char *the_paths[] = {
"C:\\",
" : * ? \" \n < > |",
"a\\b",
"\\\\b\a",
":\\",
"COM1",
"foo.aux",
REP1024("1234"), /* 4096 char string */
REP1024("12345678"), /* 8192 char string */
"\xC5\xAA\x6E\xC4\xAD\x63\xC5\x8D\x64\x65\xCC\xBD", /* Ūnĭcōde̽ */
NULL
};
git_treebuilder *builder;
git_tree *tree;
git_oid id, bid, subid;
const char **scan;
int count = 0, i, j;
git_tree_entry *te;
git_oid_fromstr(&bid, blob_oid);
/* create tree */
cl_git_pass(git_treebuilder_new(&builder, g_repo, NULL));
for (scan = the_paths; *scan; ++scan) {
cl_git_pass(git_treebuilder_insert(
NULL, builder, *scan, &bid, GIT_FILEMODE_BLOB));
count++;
}
cl_git_pass(git_treebuilder_write(&id, builder));
git_treebuilder_free(builder);
/* check data is correct */
cl_git_pass(git_tree_lookup(&tree, g_repo, &id));
cl_assert_equal_i(count, git_tree_entrycount(tree));
for (scan = the_paths; *scan; ++scan) {
const git_tree_entry *cte = git_tree_entry_byname(tree, *scan);
cl_assert(cte != NULL);
cl_assert_equal_s(*scan, git_tree_entry_name(cte));
}
for (scan = the_paths; *scan; ++scan) {
cl_git_pass(git_tree_entry_bypath(&te, tree, *scan));
cl_assert_equal_s(*scan, git_tree_entry_name(te));
git_tree_entry_free(te);
}
git_tree_free(tree);
/* let's try longer paths */
cl_git_pass(git_treebuilder_new(&builder, g_repo, NULL));
for (scan = the_paths; *scan; ++scan) {
cl_git_pass(git_treebuilder_insert(
NULL, builder, *scan, &id, GIT_FILEMODE_TREE));
}
cl_git_pass(git_treebuilder_write(&subid, builder));
git_treebuilder_free(builder);
/* check data is correct */
cl_git_pass(git_tree_lookup(&tree, g_repo, &subid));
cl_assert_equal_i(count, git_tree_entrycount(tree));
for (i = 0; i < count; ++i) {
for (j = 0; j < count; ++j) {
git_buf b = GIT_BUF_INIT;
cl_git_pass(git_buf_joinpath(&b, the_paths[i], the_paths[j]));
cl_git_pass(git_tree_entry_bypath(&te, tree, b.ptr));
cl_assert_equal_s(the_paths[j], git_tree_entry_name(te));
git_tree_entry_free(te);
git_buf_free(&b);
}
}
git_tree_free(tree);
}
PyObject *
TreeEntry_name__get__(TreeEntry *self)
{
return to_path(git_tree_entry_name(self->entry));
}
must_pass(git_repository_open(&repo, REPOSITORY_FOLDER)); git_oid_mkstr(&id, tree_oid); must_pass(git_tree_lookup(&tree, repo, &id)); must_be_true(git_tree_entrycount(tree) == 3); /* GH-86: git_object_lookup() should also check the type if the object comes from the cache */ must_be_true(git_object_lookup(&obj, repo, &id, GIT_OBJ_TREE) == 0); must_be_true(git_object_lookup(&obj, repo, &id, GIT_OBJ_BLOB) == GIT_EINVALIDTYPE); entry = git_tree_entry_byname(tree, "README"); must_be_true(entry != NULL); must_be_true(strcmp(git_tree_entry_name(entry), "README") == 0); must_pass(git_tree_entry_2object(&obj, repo, entry)); git_repository_free(repo); END_TEST BEGIN_SUITE(tree) ADD_TEST(read0); ADD_TEST(read1); // ADD_TEST(write0); /* TODO THREADSAFE */ // ADD_TEST(write1); END_SUITE
static int mne_git_tree_entry_cb(const char *root, git_tree_entry *entry, void *arg) {
mne_git_walk_ctx *ctx = (mne_git_walk_ctx*)arg;
git_otype type = git_tree_entry_type(entry);
if (likely(type == GIT_OBJ_BLOB)) {
const git_oid *blob_oid = git_tree_entry_id(entry);
char *sha1 = malloc(sizeof(char) * GIT_OID_HEXSZ + 1);
assert(sha1 != NULL);
git_oid_tostr(sha1, GIT_OID_HEXSZ + 1, blob_oid);
git_odb_object *blob_odb_object;
git_odb_read(&blob_odb_object, odb, blob_oid);
gpointer blob = g_hash_table_lookup(blobs, (gpointer)sha1);
char **sha1_refs;
if (blob == NULL) {
ctx->distinct_blobs++;
char *tmp_data = (char*)git_odb_object_data(blob_odb_object);
int data_len = strlen(tmp_data);
char *data = malloc(sizeof(char) * (data_len + 1));
memcpy(data, tmp_data, data_len);
data[data_len] = 0;
assert((strlen(root) + strlen(git_tree_entry_name(entry))) < MNE_MAX_PATH_LENGTH);
char *path = malloc(sizeof(char) * MNE_MAX_PATH_LENGTH);
assert(path != NULL);
strcpy(path, root);
strcat(path, git_tree_entry_name(entry));
/* TOOD: Check that the blob <-> path mapping is 1-1. */
g_hash_table_insert(paths, (gpointer)sha1, (gpointer)path);
g_hash_table_insert(blobs, (gpointer)sha1, (gpointer)data);
ctx->bytes += (unsigned long)(sizeof(char) * strlen(data));
sha1_refs = malloc(sizeof(char*) * total_refs);
assert(sha1_refs != NULL);
int i;
for (i = 0; i < total_refs; i++)
sha1_refs[i] = NULL;
g_hash_table_insert(refs, (gpointer)sha1, (gpointer)sha1_refs);
} else {
sha1_refs = g_hash_table_lookup(refs, (gpointer)sha1);
free(sha1);
}
git_odb_object_free(blob_odb_object);
int i;
for (i = 0; i < total_refs; i++) {
if (sha1_refs[i] != NULL)
continue;
sha1_refs[i] = ctx->ref_name;
break;
}
}
return GIT_OK;
}
int CRepositoryBrowser::ReadTreeRecursive(git_repository &repo, const git_tree * tree, CShadowFilesTree * treeroot)
{
size_t count = git_tree_entrycount(tree);
bool hasSubfolders = false;
for (size_t i = 0; i < count; ++i)
{
const git_tree_entry *entry = git_tree_entry_byindex(tree, i);
if (entry == NULL)
continue;
const int mode = git_tree_entry_filemode(entry);
CString base = CUnicodeUtils::GetUnicode(git_tree_entry_name(entry), CP_UTF8);
const git_oid *oid = git_tree_entry_id(entry);
CShadowFilesTree * pNextTree = &treeroot->m_ShadowTree[base];
pNextTree->m_sName = base;
pNextTree->m_pParent = treeroot;
pNextTree->m_hash = CGitHash((char *)oid->id);
if (mode == GIT_FILEMODE_COMMIT)
pNextTree->m_bSubmodule = true;
else if (mode & S_IFDIR)
{
hasSubfolders = true;
pNextTree->m_bFolder = true;
pNextTree->m_bLoaded = false;
TVINSERTSTRUCT tvinsert = {0};
tvinsert.hParent = treeroot->m_hTree;
tvinsert.hInsertAfter = TVI_SORT;
tvinsert.itemex.mask = TVIF_DI_SETITEM | TVIF_PARAM | TVIF_TEXT | TVIF_IMAGE | TVIF_SELECTEDIMAGE | TVIF_STATE | TVIF_CHILDREN;
tvinsert.itemex.pszText = base.GetBuffer(base.GetLength());
tvinsert.itemex.cChildren = 1;
tvinsert.itemex.lParam = (LPARAM)pNextTree;
tvinsert.itemex.iImage = m_nIconFolder;
tvinsert.itemex.iSelectedImage = m_nOpenIconFolder;
pNextTree->m_hTree = m_RepoTree.InsertItem(&tvinsert);
base.ReleaseBuffer();
}
else
{
if (mode == GIT_FILEMODE_BLOB_EXECUTABLE)
pNextTree->m_bExecutable = true;
if (mode == GIT_FILEMODE_LINK)
pNextTree->m_bSymlink = true;
CAutoBlob blob;
git_blob_lookup(blob.GetPointer(), &repo, oid);
if (!blob)
continue;
pNextTree->m_iSize = git_blob_rawsize(blob);
}
}
if (!hasSubfolders)
{
TVITEM tvitem = { 0 };
tvitem.hItem = treeroot->m_hTree;
tvitem.mask = TVIF_CHILDREN;
tvitem.cChildren = 0;
m_RepoTree.SetItem(&tvitem);
}
return 0;
}