1 // Protocol Buffers for Go with Gadgets
3 // Copyright (c) 2013, The GoGo Authors. All rights reserved.
4 // http://github.com/gogo/protobuf
6 // Redistribution and use in source and binary forms, with or without
7 // modification, are permitted provided that the following conditions are
10 // * Redistributions of source code must retain the above copyright
11 // notice, this list of conditions and the following disclaimer.
12 // * Redistributions in binary form must reproduce the above
13 // copyright notice, this list of conditions and the following disclaimer
14 // in the documentation and/or other materials provided with the
17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 func Skip(data []byte) (n int, err error) {
41 for shift := uint(0); ; shift += 7 {
43 return 0, io.ErrUnexpectedEOF
47 wire |= (uint64(b) & 0x7F) << shift
52 wireType := int(wire & 0x7)
57 return 0, io.ErrUnexpectedEOF
60 if data[index-1] < 0x80 {
70 for shift := uint(0); ; shift += 7 {
72 return 0, io.ErrUnexpectedEOF
76 length |= (int(b) & 0x7F) << shift
87 for shift := uint(0); ; shift += 7 {
89 return 0, io.ErrUnexpectedEOF
93 innerWire |= (uint64(b) & 0x7F) << shift
98 innerWireType := int(innerWire & 0x7)
99 if innerWireType == 4 {
102 next, err := Skip(data[start:])
115 return 0, fmt.Errorf("proto: illegal wireType %d", wireType)