/
odb.go
176 lines (152 loc) · 4.11 KB
/
odb.go
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package git2
// #cgo pkg-config: libgit2
// #include <git2.h>
import "C"
import (
"unsafe"
)
type OdbBackend struct {
git_odb_backend *C.git_odb_backend
}
type OdbStream struct {
git_odb_stream *C.git_odb_stream
}
func NewOdb() (*Odb, error) {
odb := new(Odb)
ecode := C.git_odb_new(&odb.git_odb)
if ecode != git_SUCCESS {
return nil, gitError()
}
return odb, nil
}
func OpenOdb(dir string) (*Odb, error) {
odb := new(Odb)
cdir := C.CString(dir)
defer C.free(unsafe.Pointer(cdir))
ecode := C.git_odb_open(&odb.git_odb, cdir)
if ecode != git_SUCCESS {
return nil, gitError()
}
return odb, nil
}
type Odb struct {
git_odb *C.git_odb
}
func (odb *Odb) AddBackend(backend *OdbBackend, priority int) error {
ecode := C.git_odb_add_backend(odb.git_odb, backend.git_odb_backend, C.int(priority))
if ecode != git_SUCCESS {
return gitError()
}
return nil
}
func (odb *Odb) AddAlternate(backend *OdbBackend, priority int) error {
ecode := C.git_odb_add_alternate(odb.git_odb, backend.git_odb_backend, C.int(priority))
if ecode != git_SUCCESS {
return gitError()
}
return nil
}
func (odb *Odb) Exists(oid *Oid) bool {
return C.git_odb_exists(odb.git_odb, oid.git_oid) != c_FALSE
}
func (odb *Odb) Free() {
C.git_odb_free(odb.git_odb)
}
func (odb *Odb) Hash(data []byte, form ObjectType) (*Oid, error) {
oid := new(Oid)
cdata := unsafe.Pointer(&data[0])
defer C.free(cdata)
length := C.size_t(len(data))
ecode := C.git_odb_hash(oid.git_oid, cdata, length, C.git_otype(form))
if ecode != git_SUCCESS {
return nil, gitError()
}
return oid, nil
}
func (odb *Odb) HashFile(path string, form ObjectType) (*Oid, error) {
oid := new(Oid)
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
ecode := C.git_odb_hashfile(oid.git_oid, cpath, C.git_otype(form))
if ecode != git_SUCCESS {
return nil, gitError()
}
return oid, nil
}
func (odb *Odb) OpenRStream(oid *Oid) (*OdbStream, error) {
stream := new(OdbStream)
ecode := C.git_odb_open_rstream(&stream.git_odb_stream, odb.git_odb, oid.git_oid)
if ecode != git_SUCCESS {
return nil, gitError()
}
return stream, nil
}
func (odb *Odb) OpenWStream(size int, form ObjectType) (*OdbStream, error) {
stream := new(OdbStream)
ecode := C.git_odb_open_wstream(&stream.git_odb_stream, odb.git_odb, C.size_t(size), C.git_otype(form))
if ecode != git_SUCCESS {
return nil, gitError()
}
return stream, nil
}
type OdbObject struct {
git_odb_object *C.git_odb_object
}
func (obj *OdbObject) Data() []byte {
data := C.git_odb_object_data(obj.git_odb_object)
length := C.git_odb_object_size(obj.git_odb_object)
return C.GoBytes(data, C.int(length))
}
func (obj *OdbObject) Free() {
C.git_odb_object_free(obj.git_odb_object)
}
func (obj *OdbObject) Id() *Oid {
oid := new(Oid)
oid.git_oid = C.git_odb_object_id(obj.git_odb_object)
if oid.git_oid == nil {
return nil
}
return oid
}
func (obj *OdbObject) Size() int {
return int(C.git_odb_object_size(obj.git_odb_object))
}
func (obj *OdbObject) Type() ObjectType {
return ObjectType(C.git_odb_object_type(obj.git_odb_object))
}
func (odb *Odb) Read(oid *Oid) (*OdbObject, error) {
obj := new(OdbObject)
ecode := C.git_odb_read(&obj.git_odb_object, odb.git_odb, oid.git_oid)
if ecode != git_SUCCESS {
return nil, gitError()
}
return obj, nil
}
func (odb *Odb) ReadHeader(oid *Oid) (int, ObjectType, error) {
var clen C.size_t
var ctype C.git_otype
ecode := C.git_odb_read_header(&clen, &ctype, odb.git_odb, oid.git_oid)
if ecode != git_SUCCESS {
return int(clen), ObjectType(ctype), gitError()
}
return int(clen), ObjectType(ctype), nil
}
func (odb *Odb) ReadPrefix(oid *Oid, n uint) (*OdbObject, error) {
obj := new(OdbObject)
ecode := C.git_odb_read_prefix(&obj.git_odb_object, odb.git_odb, oid.git_oid, C.uint(n))
if ecode != git_SUCCESS {
return nil, gitError()
}
return obj, nil
}
func (odb *Odb) Write(data []byte, form ObjectType) (*Oid, error) {
oid := new(Oid)
cdata := unsafe.Pointer(&data[0])
defer C.free(cdata)
length := C.size_t(len(data))
ecode := C.git_odb_write(oid.git_oid, odb.git_odb, cdata, length, C.git_otype(form))
if ecode != git_SUCCESS {
return nil, gitError()
}
return oid, nil
}