| :: # Copyright 2013, Big Switch Networks, Inc. |
| :: # |
| :: # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with |
| :: # the following special exception: |
| :: # |
| :: # LOXI Exception |
| :: # |
| :: # As a special exception to the terms of the EPL, you may distribute libraries |
| :: # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided |
| :: # that copyright and licensing notices generated by LoxiGen are not altered or removed |
| :: # from the LoxiGen Libraries and the notice provided below is (i) included in |
| :: # the LoxiGen Libraries, if distributed in source code form and (ii) included in any |
| :: # documentation for the LoxiGen Libraries, if distributed in binary form. |
| :: # |
| :: # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler." |
| :: # |
| :: # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain |
| :: # a copy of the EPL at: |
| :: # |
| :: # http://www.eclipse.org/legal/epl-v10.html |
| :: # |
| :: # Unless required by applicable law or agreed to in writing, software |
| :: # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| :: # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| :: # EPL for the specific language governing permissions and limitations |
| :: # under the EPL. |
| :: |
| OFReader = {} |
| OFReader.new = function(buf, offset) |
| local self = {} |
| offset = offset or 0 |
| |
| self.read = function(len) |
| local r = buf(offset, len) |
| offset = offset + len |
| return r |
| end |
| |
| self.read_all = function() |
| local r = buf(offset, buf:len() - offset) |
| offset = buf:len() |
| return r |
| end |
| |
| self.peek = function(off, len) |
| return buf(offset + off, len) |
| end |
| |
| self.peek_all = function(off) |
| return buf(offset + off, buf:len() - offset - off) |
| end |
| |
| self.skip = function(len) |
| offset = offset + len |
| end |
| |
| self.is_empty = function() |
| return offset == buf:len() |
| end |
| |
| self.slice = function(len) |
| r = OFReader.new(buf(offset, len)) |
| offset = offset + len |
| return r |
| end |
| |
| return self |
| end |