1 files changed, 92 insertions, 0 deletions
diff --git a/git.go b/git.go
new file mode 100644
index 0000000..84716e3
--- /dev/null
+++ b/git.go
@@ -0,0 +1,92 @@
+package git
+
+/*
+#cgo pkg-config: libgit2
+#include <git2.h>
+#include <git2/errors.h>
+*/
+import "C"
+import (
+	"unsafe"
+)
+
+const (
+	ITEROVER  = C.GIT_ITEROVER
+	EEXISTS   = C.GIT_EEXISTS
+	ENOTFOUND = C.GIT_ENOTFOUND
+)
+
+func init() {
+	C.git_threads_init()
+}
+
+// Oid
+type Oid struct {
+	bytes [20]byte
+}
+
+func newOidFromC(coid *C.git_oid) *Oid {
+	oid := new(Oid)
+	copy(oid.bytes[0:20], C.GoBytes(unsafe.Pointer(coid), 20))
+	return oid
+}
+
+func NewOid(b []byte) *Oid {
+	oid := new(Oid)
+	copy(oid.bytes[0:20], b[0:20])
+	return oid
+}
+
+func (oid *Oid) toC() *C.git_oid {
+	return (*C.git_oid)(unsafe.Pointer(&oid.bytes))
+}
+
+func NewOidFromString(s string) (*Oid, error) {
+	o := new(Oid)
+	cs := C.CString(s)
+	defer C.free(unsafe.Pointer(cs))
+
+	if C.git_oid_fromstr(o.toC(), cs) < 0 {
+		return nil, LastError()
+	}
+
+	return o, nil
+}
+
+func (oid *Oid) String() string {
+	buf := make([]byte, 40)
+	C.git_oid_fmt((*C.char)(unsafe.Pointer(&buf[0])), oid.toC())
+	return string(buf)
+}
+
+func (oid *Oid) Bytes() []byte {
+	return oid.bytes[0:]
+}
+
+type GitError struct {
+	Message string
+	Code int
+}
+
+func (e GitError) Error() string{
+	return e.Message
+}
+
+func LastError() error {
+	err := C.giterr_last()
+	return &GitError{C.GoString(err.message), int(err.klass)}
+}
+
+func cbool(b bool) C.int {
+	if (b) {
+		return C.int(1)
+	}
+	return C.int(0)
+}
+
+func ucbool(b bool) C.uint {
+	if (b) {
+		return C.uint(1)
+	}
+	return C.uint(0)
+}