BytesStore.cs
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using System;
using System.Runtime.InteropServices;
using System.Text;
namespace UniJSON
{
public class BytesStore : IStore
{
public BytesStore() : this(64)
{ }
public BytesStore(int size) : this(new Byte[size])
{ }
public BytesStore(Byte[] buffer)
{
m_buffer = buffer;
}
Byte[] m_buffer;
void Require(int size)
{
if (m_buffer == null)
{
m_buffer = new Byte[Math.Max(size, 1024)];
return;
}
if (m_pos + size < m_buffer.Length)
{
return;
}
var newSize = Math.Max(m_pos + size, m_buffer.Length * 2);
//Console.WriteLine(newSize);
var old = m_buffer;
m_buffer = new Byte[newSize];
Buffer.BlockCopy(old, 0
, m_buffer, 0, m_pos);
}
int m_pos;
public ArraySegment<byte> Bytes
{
get
{
return new ArraySegment<byte>(m_buffer, 0, m_pos);
}
}
public void Clear()
{
m_pos = 0;
}
char[] m_c = new char[1];
public void Write(char c)
{
if (c <= 0x7F)
{
// ascii
Require(1);
m_buffer[m_pos++] = (Byte)c;
return;
}
Require(3);
m_c[0] = c;
var size = Encoding.UTF8.GetBytes(m_c, 0, 1, m_buffer, m_pos);
m_pos += size;
}
public void Write(string src)
{
var size = Encoding.UTF8.GetByteCount(src);
Require(size);
var byteSize = Encoding.UTF8.GetBytes(src, 0, src.Length
, m_buffer, m_pos);
if (size != byteSize)
{
throw new Exception();
}
m_pos += byteSize;
}
public void Write(ArraySegment<byte> bytes)
{
Require(bytes.Count);
Array.Copy(bytes.Array, bytes.Offset
, m_buffer, m_pos, bytes.Count);
m_pos += bytes.Count;
}
public void Write(sbyte value)
{
Require(Marshal.SizeOf(value));
m_buffer[m_pos++] = (Byte)value;
}
public void Write(byte value)
{
Require(Marshal.SizeOf(value));
m_buffer[m_pos++] = value;
}
#region LittleEndian
public void WriteLittleEndian(short value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.WordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
}
public void WriteLittleEndian(int value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
}
public void WriteLittleEndian(long value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte7;
}
public void WriteLittleEndian(ushort value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.WordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
}
public void WriteLittleEndian(uint value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
}
public void WriteLittleEndian(ulong value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte7;
}
public void WriteLittleEndian(float value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
}
public void WriteLittleEndian(double value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte0;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte7;
}
#endregion
#region BigEndian
public void WriteBigEndian(short value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.WordValue.Create(value);
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(int value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(long value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte7;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(ushort value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.WordValue.Create(value);
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(uint value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(ulong value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte7;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(float value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.DWordValue.Create(value);
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
public void WriteBigEndian(double value)
{
Require(Marshal.SizeOf(value));
var u = ByteUnion.QWordValue.Create(value);
m_buffer[m_pos++] = u.Byte7;
m_buffer[m_pos++] = u.Byte6;
m_buffer[m_pos++] = u.Byte5;
m_buffer[m_pos++] = u.Byte4;
m_buffer[m_pos++] = u.Byte3;
m_buffer[m_pos++] = u.Byte2;
m_buffer[m_pos++] = u.Byte1;
m_buffer[m_pos++] = u.Byte0;
}
#endregion
}
}