Merge commit 'refs/pull/72/head' of github.com:libgit2/git2go

Conflicts:
	git.go
	wrapper.c

1 files changed, 48 insertions, 0 deletions

diff --git a/patch.go b/patch.go
new file mode 100644
index 0000000..0665501
--- /dev/null
+++ b/patch.go
@@ -0,0 +1,48 @@
+package git
+
+/*
+#include <git2.h>
+*/
+import "C"
+import (
+	"runtime"
+)
+
+type Patch struct {
+	ptr *C.git_patch
+}
+
+func newPatchFromC(ptr *C.git_patch) *Patch {
+	if ptr == nil {
+		return nil
+	}
+
+	patch := &Patch{
+		ptr: ptr,
+	}
+
+	runtime.SetFinalizer(patch, (*Patch).Free)
+	return patch
+}
+
+func (patch *Patch) Free() error {
+	if patch.ptr == nil {
+		return ErrInvalid
+	}
+	runtime.SetFinalizer(patch, nil)
+	C.git_patch_free(patch.ptr)
+	patch.ptr = nil
+	return nil
+}
+
+func (patch *Patch) String() (string, error) {
+	if patch.ptr == nil {
+		return "", ErrInvalid
+	}
+	var buf C.git_buf
+	ecode := C.git_patch_to_buf(&buf, patch.ptr)
+	if ecode < 0 {
+		return "", MakeGitError(ecode)
+	}
+	return C.GoString(buf.ptr), nil
+}