add vendor

vendor/github.com/siddontang/ledisdb/store/rocksdb/util.go

@@ -0,0 +1,54 @@
+// +build rocksdb
+
+package rocksdb
+
+// #include <stdlib.h>
+// #include "rocksdb/c.h"
+import "C"
+
+import (
+	"fmt"
+	"reflect"
+	"unsafe"
+)
+
+func boolToUchar(b bool) C.uchar {
+	uc := C.uchar(0)
+	if b {
+		uc = C.uchar(1)
+	}
+	return uc
+}
+
+func ucharToBool(uc C.uchar) bool {
+	if uc == C.uchar(0) {
+		return false
+	}
+	return true
+}
+
+func boolToInt(b bool) C.int {
+	uc := C.int(0)
+	if b {
+		uc = C.int(1)
+	}
+	return uc
+}
+
+func saveError(errStr *C.char) error {
+	if errStr != nil {
+		gs := C.GoString(errStr)
+		C.free(unsafe.Pointer(errStr))
+		return fmt.Errorf(gs)
+	}
+	return nil
+}
+
+func slice(p unsafe.Pointer, n int) []byte {
+	var b []byte
+	pbyte := (*reflect.SliceHeader)(unsafe.Pointer(&b))
+	pbyte.Data = uintptr(p)
+	pbyte.Len = n
+	pbyte.Cap = n
+	return b
+}