//------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // Information Contained Herein is Proprietary and Confidential. // //------------------------------------------------------------------------------ namespace Microsoft.VisualStudio.WebHost { using System; using System.Collections; using System.Text; internal sealed class ByteString { private byte[] _bytes; private int _offset; private int _length; public ByteString(byte[] bytes, int offset, int length) { _bytes = bytes; _offset = offset; _length = length; } public byte[] Bytes { get { return _bytes; } } public bool IsEmpty { get { return (_bytes == null || _length == 0); } } public int Length { get { return _length; } } public int Offset { get { return _offset; } } public byte this[int index] { get { return _bytes[_offset+index]; } } public String GetString() { return GetString(Encoding.UTF8); } public String GetString(Encoding enc) { if (IsEmpty) { return String.Empty; } return enc.GetString(_bytes, _offset, _length); } public byte[] GetBytes() { byte[] bytes = new byte[_length]; if (_length > 0) { Buffer.BlockCopy(_bytes, _offset, bytes, 0, _length); } return bytes; } public int IndexOf(char ch) { return IndexOf(ch, 0); } public int IndexOf(char ch, int offset) { for (int i = offset; i < _length; i++) { if (this[i] == (byte)ch) { return i; } } return -1; } public ByteString Substring(int offset) { return Substring(offset, _length-offset); } public ByteString Substring(int offset, int len) { return new ByteString(_bytes, _offset+offset, len); } public ByteString[] Split(char sep) { ArrayList list = new ArrayList(); int pos = 0; while (pos < _length) { int i = IndexOf(sep, pos); if (i < 0) { break; } list.Add(Substring(pos, i-pos)); pos = i+1; while (this[pos] == (byte)sep && pos < _length) { pos++; } } if (pos < _length) { list.Add(Substring(pos)); } int n = list.Count; ByteString[] result = new ByteString[n]; for (int i = 0; i < n; i++) { result[i] = (ByteString)list[i]; } return result; } } }