{
using System;
+using System.Runtime.InteropServices;
[Serializable]
+#if NET_2_0
+[ComVisible (true)]
+#endif
public abstract class Decoder
{
protected Decoder () {}
#if NET_2_0
- DecoderFallback fallback;
+ DecoderFallback fallback = new DecoderReplacementFallback ();
DecoderFallbackBuffer fallback_buffer;
+ [ComVisible (false)]
public DecoderFallback Fallback {
get { return fallback; }
set {
}
}
+ [ComVisible (false)]
public DecoderFallbackBuffer FallbackBuffer {
get {
if (fallback_buffer == null)
public abstract int GetChars (byte[] bytes, int byteIndex, int byteCount,
char[] chars, int charIndex);
+#if NET_2_0
+ [ComVisible (false)]
+ public virtual int GetCharCount (byte [] bytes, int index, int count, bool flush)
+ {
+ if (flush)
+ Reset ();
+ return GetCharCount (bytes, index, count);
+ }
+
+ [CLSCompliant (false)]
+ [ComVisible (false)]
+ public unsafe virtual int GetCharCount (byte* bytes, int count, bool flush)
+ {
+ if (bytes == null)
+ throw new ArgumentNullException ("bytes");
+ if (count < 0)
+ throw new ArgumentOutOfRangeException ("count");
+
+ byte [] barr = new byte [count];
+ Marshal.Copy ((IntPtr) bytes, barr, 0, count);
+ return GetCharCount (barr, 0, count, flush);
+ }
+
+ public virtual int GetChars (
+ byte[] bytes, int byteIndex, int byteCount,
+ char[] chars, int charIndex, bool flush)
+ {
+ CheckArguments (bytes, byteIndex, byteCount);
+ CheckArguments (chars, charIndex);
+
+ if (flush)
+ Reset ();
+ return GetChars (bytes, byteIndex, byteCount, chars, charIndex);
+ }
+
+ [CLSCompliant (false)]
+ [ComVisible (false)]
+ public unsafe virtual int GetChars (byte* bytes, int byteCount,
+ char* chars, int charCount, bool flush)
+ {
+ CheckArguments (chars, charCount, bytes, byteCount);
+
+ char [] carr = new char [charCount];
+ Marshal.Copy ((IntPtr) chars, carr, 0, charCount);
+ byte [] barr = new byte [byteCount];
+ Marshal.Copy ((IntPtr) bytes, barr, 0, byteCount);
+ return GetChars (barr, 0, byteCount, carr, 0, flush);
+ }
+
+ [ComVisible (false)]
+ public virtual void Reset ()
+ {
+ if (fallback_buffer != null)
+ fallback_buffer.Reset ();
+ }
+
+ [CLSCompliant (false)]
+ [ComVisible (false)]
+ public unsafe virtual void Convert (
+ byte* bytes, int byteCount,
+ char* chars, int charCount, bool flush,
+ out int bytesUsed, out int charsUsed, out bool completed)
+ {
+ CheckArguments (chars, charCount, bytes, byteCount);
+
+ bytesUsed = byteCount;
+ while (true) {
+ charsUsed = GetCharCount (bytes, bytesUsed, flush);
+ if (charsUsed <= charCount)
+ break;
+ flush = false;
+ bytesUsed >>= 1;
+ }
+ completed = bytesUsed == byteCount;
+ charsUsed = GetChars (bytes, bytesUsed, chars, charCount, flush);
+ }
+
+ [ComVisible (false)]
+ public virtual void Convert (
+ byte [] bytes, int byteIndex, int byteCount,
+ char [] chars, int charIndex, int charCount, bool flush,
+ out int bytesUsed, out int charsUsed, out bool completed)
+ {
+ CheckArguments (bytes, byteIndex, byteCount);
+ CheckArguments (chars, charIndex);
+ if (charCount < 0 || chars.Length < charIndex + charCount)
+ throw new ArgumentOutOfRangeException ("charCount");
+
+ bytesUsed = byteCount;
+ while (true) {
+ charsUsed = GetCharCount (bytes, byteIndex, bytesUsed, flush);
+ if (charsUsed <= charCount)
+ break;
+ flush = false;
+ bytesUsed >>= 1;
+ }
+ completed = bytesUsed == byteCount;
+ charsUsed = GetChars (bytes, byteIndex, bytesUsed, chars, charIndex, flush);
+ }
+
+ void CheckArguments (char [] chars, int charIndex)
+ {
+ if (chars == null)
+ throw new ArgumentNullException ("chars");
+ if (charIndex < 0 || chars.Length <= charIndex)
+ throw new ArgumentOutOfRangeException ("charIndex");
+ }
+
+ void CheckArguments (byte [] bytes, int byteIndex, int byteCount)
+ {
+ if (bytes == null)
+ throw new ArgumentNullException ("bytes");
+ if (byteIndex < 0 || bytes.Length <= byteIndex)
+ throw new ArgumentOutOfRangeException ("byteIndex");
+ if (byteCount < 0 || bytes.Length < byteIndex + byteCount)
+ throw new ArgumentOutOfRangeException ("byteCount");
+ }
+
+ unsafe void CheckArguments (char* chars, int charCount, byte* bytes, int byteCount)
+ {
+ if (chars == null)
+ throw new ArgumentNullException ("chars");
+ if (bytes == null)
+ throw new ArgumentNullException ("bytes");
+ if (charCount < 0)
+ throw new ArgumentOutOfRangeException ("charCount");
+ if (byteCount < 0)
+ throw new ArgumentOutOfRangeException ("byteCount");
+ }
+#endif
+
}; // class Decoder
}; // namespace System.Text