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//
// System.IO.BinaryWriter
//
// Author:
// Matt Kimball (matt@kimball.net)
//
using System;
using System.Text;
using System.Globalization;
namespace System.IO {
[Serializable]
public class BinaryWriter : IDisposable {
// Null is a BinaryWriter with no backing store.
public static readonly BinaryWriter Null;
protected Stream OutStream;
private Encoding m_encoding;
private byte [] buffer;
static BinaryWriter() {
Null = new BinaryWriter();
}
protected BinaryWriter() : this (Stream.Null, Encoding.UTF8) {
}
public BinaryWriter(Stream output) : this(output, Encoding.UTF8) {
}
public BinaryWriter(Stream output, Encoding encoding) {
if (output == null || encoding == null)
throw new ArgumentNullException(Locale.GetText ("Output or Encoding is a null reference."));
if (!output.CanWrite)
throw new ArgumentException(Locale.GetText ("Stream does not support writing or already closed."));
OutStream = output;
m_encoding = encoding;
buffer = new byte [16];
}
public virtual Stream BaseStream {
get {
return OutStream;
}
}
public virtual void Close() {
Dispose (true);
}
void IDisposable.Dispose() {
Dispose (true);
}
protected virtual void Dispose (bool disposing)
{
if (disposing)
{
OutStream.Close();
//OutStream.Dispose();
}
}
public virtual void Flush() {
OutStream.Flush();
}
public virtual long Seek(int offset, SeekOrigin origin) {
return OutStream.Seek(offset, origin);
}
public virtual void Write(bool value) {
buffer [0] = (byte) (value ? 1 : 0);
OutStream.Write(buffer, 0, 1);
}
public virtual void Write(byte value) {
OutStream.WriteByte(value);
}
public virtual void Write(byte[] value) {
if (value == null)
throw new ArgumentNullException(Locale.GetText ("Byte buffer is a null reference."));
OutStream.Write(value, 0, value.Length);
}
public virtual void Write(byte[] value, int offset, int length) {
if (value == null)
throw new ArgumentNullException(Locale.GetText ("Byte buffer is a null reference."));
OutStream.Write(value, offset, length);
}
public virtual void Write(char value) {
char[] dec = new char[1];
dec[0] = value;
byte[] enc = m_encoding.GetBytes(dec, 0, 1);
OutStream.Write(enc, 0, enc.Length);
}
public virtual void Write(char[] value) {
if (value == null)
throw new ArgumentNullException(Locale.GetText ("Chars is a null reference."));
byte[] enc = m_encoding.GetBytes(value, 0, value.Length);
OutStream.Write(enc, 0, enc.Length);
}
public virtual void Write(char[] value, int offset, int length) {
if (value == null)
throw new ArgumentNullException(Locale.GetText ("Chars is a null reference."));
byte[] enc = m_encoding.GetBytes(value, offset, length);
OutStream.Write(enc, 0, enc.Length);
}
unsafe public virtual void Write(decimal value) {
byte* value_ptr = (byte *)&value;
for (int i = 0; i < 16; i++) {
buffer [i] = value_ptr [i];
}
OutStream.Write(buffer, 0, 16);
}
public virtual void Write(double value) {
OutStream.Write(BitConverter.GetBytes(value), 0, 8);
}
public virtual void Write(short value) {
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
OutStream.Write(buffer, 0, 2);
}
public virtual void Write(int value) {
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
buffer [2] = (byte) (value >> 16);
buffer [3] = (byte) (value >> 24);
OutStream.Write(buffer, 0, 4);
}
public virtual void Write(long value) {
for (int i = 0, sh = 0; i < 8; i++, sh += 8)
buffer [i] = (byte) (value >> sh);
OutStream.Write(buffer, 0, 8);
}
[CLSCompliant(false)]
public virtual void Write(sbyte value) {
buffer [0] = (byte) value;
OutStream.Write(buffer, 0, 1);
}
public virtual void Write(float value) {
OutStream.Write(BitConverter.GetBytes(value), 0, 4);
}
public virtual void Write(string value) {
Write7BitEncodedInt(value.Length);
byte[] enc = m_encoding.GetBytes(value);
OutStream.Write(enc, 0, enc.Length);
}
[CLSCompliant(false)]
public virtual void Write(ushort value) {
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
OutStream.Write(buffer, 0, 2);
}
[CLSCompliant(false)]
public virtual void Write(uint value) {
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
buffer [2] = (byte) (value >> 16);
buffer [3] = (byte) (value >> 24);
OutStream.Write(buffer, 0, 4);
}
[CLSCompliant(false)]
public virtual void Write(ulong value) {
for (int i = 0, sh = 0; i < 8; i++, sh += 8)
buffer [i] = (byte) (value >> sh);
OutStream.Write(buffer, 0, 8);
}
protected void Write7BitEncodedInt(int value) {
do {
int high = (value >> 7) & 0x01ffffff;
byte b = (byte)(value & 0x7f);
if (high != 0) {
b = (byte)(b | 0x80);
}
Write(b);
value = high;
} while(value != 0);
}
}
}
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