//
// System.IO.BinaryWriter
//
// Author:
// Matt Kimball (matt@kimball.net)
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Text;
using System.Globalization;
using Mono.Security;
using System.Runtime.InteropServices;
namespace System.IO{
[Serializable]
[ComVisible (true)]
public class BinaryWriter : IDisposable {
// Null is a BinaryWriter with no backing store.
public static readonly BinaryWriter Null = new BinaryWriter ();
protected Stream OutStream;
private Encoding m_encoding;
private byte [] buffer;
private bool disposed = false;
protected BinaryWriter() : this (Stream.Null, Encoding.UTF8UnmarkedUnsafe) {
}
public BinaryWriter(Stream output) : this(output, Encoding.UTF8UnmarkedUnsafe) {
}
public BinaryWriter(Stream output, Encoding encoding) {
if (output == null)
throw new ArgumentNullException("output");
if (encoding == null)
throw new ArgumentNullException("encoding");
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);
}
#if NET_4_0
public void Dispose ()
#else
void IDisposable.Dispose()
#endif
{
Dispose (true);
}
protected virtual void Dispose (bool disposing)
{
if (disposing && OutStream != null)
OutStream.Close();
buffer = null;
m_encoding = null;
disposed = true;
}
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) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
buffer [0] = (byte) (value ? 1 : 0);
OutStream.Write(buffer, 0, 1);
}
public virtual void Write(byte value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
OutStream.WriteByte(value);
}
public virtual void Write(byte[] buffer) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
if (buffer == null)
throw new ArgumentNullException("buffer");
OutStream.Write(buffer, 0, buffer.Length);
}
public virtual void Write(byte[] buffer, int index, int count) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
if (buffer == null)
throw new ArgumentNullException("buffer");
OutStream.Write(buffer, index, count);
}
public virtual void Write(char ch) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
char[] dec = new char[1];
dec[0] = ch;
byte[] enc = m_encoding.GetBytes(dec, 0, 1);
OutStream.Write(enc, 0, enc.Length);
}
public virtual void Write(char[] chars) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
if (chars == null)
throw new ArgumentNullException("chars");
byte[] enc = m_encoding.GetBytes(chars, 0, chars.Length);
OutStream.Write(enc, 0, enc.Length);
}
public virtual void Write(char[] chars, int index, int count) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
if (chars == null)
throw new ArgumentNullException("chars");
byte[] enc = m_encoding.GetBytes(chars, index, count);
OutStream.Write(enc, 0, enc.Length);
}
unsafe public virtual void Write(decimal value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
byte* value_ptr = (byte *)&value;
/*
* decimal in stream is lo32, mi32, hi32, ss32
* but its internal structure si ss32, hi32, lo32, mi32
*/
if (BitConverter.IsLittleEndian) {
for (int i = 0; i < 16; i++) {
if (i < 4)
buffer [i + 12] = value_ptr [i];
else if (i < 8)
buffer [i + 4] = value_ptr [i];
else if (i < 12)
buffer [i - 8] = value_ptr [i];
else
buffer [i - 8] = value_ptr [i];
}
} else {
for (int i = 0; i < 16; i++) {
if (i < 4)
buffer [15 - i] = value_ptr [i];
else if (i < 8)
buffer [15 - i] = value_ptr [i];
else if (i < 12)
buffer [11 - i] = value_ptr [i];
else
buffer [19 - i] = value_ptr [i];
}
}
OutStream.Write(buffer, 0, 16);
}
public virtual void Write(double value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
OutStream.Write(BitConverterLE.GetBytes(value), 0, 8);
}
public virtual void Write(short value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
OutStream.Write(buffer, 0, 2);
}
public virtual void Write(int value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
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) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
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) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
buffer [0] = (byte) value;
OutStream.Write(buffer, 0, 1);
}
public virtual void Write(float value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
OutStream.Write(BitConverterLE.GetBytes(value), 0, 4);
}
byte [] stringBuffer;
int maxCharsPerRound;
public virtual void Write(string value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
int len = m_encoding.GetByteCount (value);
Write7BitEncodedInt (len);
if (stringBuffer == null) {
stringBuffer = new byte [512];
maxCharsPerRound = 512 / m_encoding.GetMaxByteCount (1);
}
int chpos = 0;
int chrem = value.Length;
while (chrem > 0) {
int cch = (chrem > maxCharsPerRound) ? maxCharsPerRound : chrem;
int blen = m_encoding.GetBytes (value, chpos, cch, stringBuffer, 0);
OutStream.Write (stringBuffer, 0, blen);
chpos += cch;
chrem -= cch;
}
}
[CLSCompliant(false)]
public virtual void Write(ushort value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
buffer [0] = (byte) value;
buffer [1] = (byte) (value >> 8);
OutStream.Write(buffer, 0, 2);
}
[CLSCompliant(false)]
public virtual void Write(uint value) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
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) {
if (disposed)
throw new ObjectDisposedException ("BinaryWriter", "Cannot write to a closed BinaryWriter");
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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