/
tree.go
245 lines (209 loc) · 6.26 KB
/
tree.go
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package git2
// #cgo pkg-config: libgit2
// #include <git2.h>
// extern int go_tree_walk_callback(char *root, git_tree_entry *entry, void *payload);
// extern int goTreeWalk(git_tree *tree, int mode, void *payload);
// extern int go_treebuilder_filter(git_tree_entry *entry, void *payload);
// extern int goTreeBuilderFilter(git_treebuilder *builder, void *payload);
import "C"
import (
"unsafe"
)
type TreeWalkMode int
const (
TREEWALK_PRE TreeWalkMode = iota
TREEWALK_POST
)
type FileMode uint
const (
FILEMODE_NEW FileMode = 0000000
FILEMODE_TREE = 0040000
FILEMODE_BLOB = 0100644
FILEMODE_BLOB_EXECUTABLE = 0100755
FILEMODE_LINK = 0120000
FILEMODE_COMMIT = 0160000
)
type Tree struct {
git_tree *C.git_tree
}
func (tree *Tree) CreateTreeBuilder() (*TreeBuilder, error) {
builder := new(TreeBuilder)
ecode := C.git_treebuilder_create(&builder.git_treebuilder, tree.git_tree)
if ecode != git_SUCCESS {
return nil, gitError()
}
return builder, nil
}
func (tree *Tree) EntryByIndex(idx uint) *TreeEntry {
entry := new(TreeEntry)
entry.git_tree_entry = C.git_tree_entry_byindex(tree.git_tree, C.uint(idx))
return entry
}
func (tree *Tree) EntryByName(name string) *TreeEntry {
entry := new(TreeEntry)
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
entry.git_tree_entry = C.git_tree_entry_byname(tree.git_tree, cname)
return entry
}
func (tree *Tree) EntryCount() uint {
return uint(C.git_tree_entrycount(tree.git_tree))
}
func (tree *Tree) Free() {
C.git_tree_free(tree.git_tree)
}
func (tree *Tree) Id() *Oid {
oid := new(Oid)
oid.git_oid = C.git_tree_id(tree.git_tree)
if oid.git_oid == nil {
return nil
}
return oid
}
func (tree *Tree) Subtree(path string) (*Tree, error) {
subtree := new(Tree)
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
ecode := C.git_tree_get_subtree(&subtree.git_tree, tree.git_tree, cpath)
if ecode != git_SUCCESS {
return nil, gitError()
}
return subtree, nil
}
/* TODO: Resolve error: Go type not supported in export: [0]byte
func (tree *Tree) Walk(callback TreeWalkCallback, mode TreeWalkMode, payload interface{}) error {
data := unsafe.Pointer(&treeWalkCallbackWrapper{ callback, payload })
ecode := C.goTreeWalk(tree.git_tree, C.int(mode), data)
if ecode != git_SUCCESS {
return gitError()
}
return nil
}
//export go_tree_walk_callback
func go_tree_walk_callback(root *C.char, centry *C.git_tree_entry, payload unsafe.Pointer) C.int {
wrap := (*treeWalkCallbackWrapper)(payload)
entry := &TreeEntry{centry}
err := wrap.f(C.GoString(root), entry, wrap.d)
if err != nil {
return C.int(git_SUCCESS-1)
}
return C.int(git_SUCCESS)
}
type TreeWalkCallback func(root string, entry *TreeEntry, payload interface{})
type treeWalkCallbackWrapper struct {
f TreeWalkCallback
d interface{}
}
*/
type TreeBuilder struct {
git_treebuilder *C.git_treebuilder
}
func (builder *TreeBuilder) Clear() {
C.git_treebuilder_clear(builder.git_treebuilder)
}
/* TODO: Resolve error: Go type not supported in export: [0]byte
func (builder *TreeBuilder) Filter(filter TreeBuilderFilter, payload unsafe.Pointer) error {
data := unsafe.Pointer(treeBuilderWrapper{ filter, payload })
C.goTreeBuilderFilter(builder.git_treebuilder, data)
}
//export go_treebuilder_filter
func go_treebuilder_filter(centry *C.git_tree_entry, payload unsafe.Pointer) C.int {
wrap := (*treeBuilderWrapper)(payload)
entry := &TreeEntry{centry}
err := wrap.f(entry, wrap.d)
if err != nil {
return C.int(git_SUCCESS-1)
}
return C.int(git_SUCCESS)
}
type TreeBuilderFilter func(entry *TreeEntry, payload interface{})
type treeBuilderWrapper struct {
f TreeBuilderFilter
d interface{}
}
*/
func (builder *TreeBuilder) Free() {
C.git_treebuilder_free(builder.git_treebuilder)
}
func (builder *TreeBuilder) Get(filename string) *TreeEntry {
cfilename := C.CString(filename)
defer C.free(unsafe.Pointer(cfilename))
entry := new(TreeEntry)
entry.git_tree_entry = C.git_treebuilder_get(builder.git_treebuilder, cfilename)
if entry.git_tree_entry == nil {
return nil
}
return entry
}
func (builder *TreeBuilder) Insert(filename string, id *Oid, attributes FileMode) (*TreeEntry, error) {
entry := new(TreeEntry)
cfilename := C.CString(filename)
defer C.free(unsafe.Pointer(cfilename))
ecode := C.git_treebuilder_insert(&entry.git_tree_entry, builder.git_treebuilder, cfilename, id.git_oid, C.uint(attributes))
if ecode != git_SUCCESS {
return nil, gitError()
}
return entry, nil
}
func (builder *TreeBuilder) Remove(filename string) error {
cfilename := C.CString(filename)
defer C.free(unsafe.Pointer(cfilename))
ecode := C.git_treebuilder_remove(builder.git_treebuilder, cfilename)
if ecode != git_SUCCESS {
return gitError()
}
return nil
}
func (builder *TreeBuilder) Write(repo *Repository) (*Oid, error) {
oid := new(Oid)
ecode := C.git_treebuilder_write(oid.git_oid, repo.git_repository, builder.git_treebuilder)
if ecode != git_SUCCESS {
return nil, gitError()
}
return oid, nil
}
type TreeEntry struct {
git_tree_entry *C.git_tree_entry
}
func (entry *TreeEntry) Attributes() uint {
return uint(C.git_tree_entry_attributes(entry.git_tree_entry))
}
func (entry *TreeEntry) Id() *Oid {
oid := new(Oid)
oid.git_oid = C.git_tree_entry_id(entry.git_tree_entry)
if oid.git_oid == nil {
return nil
}
return oid
}
func (entry *TreeEntry) Name() string {
return C.GoString(C.git_tree_entry_name(entry.git_tree_entry))
}
func (entry *TreeEntry) Type() ObjectType {
return ObjectType(C.git_tree_entry_type(entry.git_tree_entry))
}
func (idx *Index) CreateTree() (*Oid, error) {
oid := new(Oid)
oid.git_oid = new(C.git_oid)
ecode := C.git_tree_create_fromindex(oid.git_oid, idx.git_index)
if ecode != git_SUCCESS {
return nil, gitError()
}
return oid, nil
}
func (repo *Repository) LookupTree(id *Oid) (*Tree, error) {
tree := new(Tree)
ecode := C.git_tree_lookup(&tree.git_tree, repo.git_repository, id.git_oid)
if ecode != git_SUCCESS {
return nil, gitError()
}
return tree, nil
}
func (repo *Repository) LookupTreePrefix(id *Oid, n uint) (*Tree, error) {
tree := new(Tree)
ecode := C.git_tree_lookup_prefix(&tree.git_tree, repo.git_repository, id.git_oid, C.uint(n))
if ecode != git_SUCCESS {
return nil, gitError()
}
return tree, nil
}