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//
// System.Text.ASCIIEncoding.cs
//
// Author:
// Sean MacIsaac (macisaac@ximian.com)
// Dietmar Maurer (dietmar@ximian.com)
//
// (C) Ximian, Inc. http://www.ximian.com
//
namespace System.Text {
[Serializable]
public class ASCIIEncoding : Encoding
{
public ASCIIEncoding () : base ()
{
encoding_name = "US-ASCII";
body_name = "us-ascii";
header_name = "us-ascii";
web_name = "us-ascii";
is_browser_display = false;
is_browser_save = false;
is_mail_news_display = true;
is_mail_news_save = true;
}
public override int GetByteCount (string chars)
{
if (chars == null)
throw new ArgumentNullException ();
return chars.Length;
}
public override int GetByteCount (char[] chars)
{
if (chars == null)
throw new ArgumentNullException ();
return chars.Length;
}
public override int GetByteCount (char[] chars, int index, int count)
{
if (chars == null)
throw new ArgumentNullException ();
if ((index < 0) || (count <= 0) || ((index + count) > chars.Length))
throw new ArgumentOutOfRangeException ();
return count;
}
public override int GetBytes (char[] chars, int charIndex, int charCount,
byte[] bytes, int byteIndex)
{
if ((bytes == null) || (chars == null))
throw new ArgumentNullException ();
if ((byteIndex < 0) || (charIndex < 0) || (charCount < 0) ||
((charIndex + charCount) > chars.Length) ||
(byteIndex >= bytes.Length))
throw new ArgumentOutOfRangeException ();
if ((bytes.Length - byteIndex) < charCount)
throw new ArgumentException ();
for (int i = 0; i < charCount; i++)
if (chars[charIndex+i] > 0x7f)
bytes[byteIndex+i] = (byte) '?';
else
bytes[byteIndex+i] = (byte) chars[charIndex+i];
return charCount;
}
public override int GetBytes (string chars, int charIndex, int charCount,
byte[] bytes, int byteIndex)
{
return GetBytes (chars.ToCharArray (), charIndex, charCount,
bytes, byteIndex);
}
public override int GetCharCount (byte[] bytes)
{
if (bytes == null)
throw new ArgumentNullException ();
return bytes.Length;
}
public override int GetCharCount (byte[] bytes, int index, int count)
{
if (bytes == null)
throw new ArgumentNullException ();
if ((index < 0) || (count <= 0) || ((index + count) > bytes.Length))
throw new ArgumentOutOfRangeException ();
return count;
}
public override int GetChars (byte[] bytes, int byteIndex, int byteCount,
char[] chars, int charIndex)
{
if ((bytes == null) || (chars == null))
throw new ArgumentNullException ();
if ((byteIndex < 0) || (charIndex < 0) || (byteCount < 0) ||
((byteIndex + byteCount) > bytes.Length) ||
(charIndex + byteCount > chars.Length))
throw new ArgumentOutOfRangeException ();
if ((chars.Length - charIndex) < byteCount)
throw new ArgumentException ();
for (int i = 0; i < byteCount; i++)
if (bytes[byteIndex+i] > 0x7f)
chars[charIndex+i] = '?';
else
chars[charIndex+i] = (char) bytes[byteIndex+i];
return byteCount;
}
public override int GetMaxByteCount (int charCount)
{
if (charCount < 0)
throw new ArgumentOutOfRangeException ();
return charCount;
}
public override int GetMaxCharCount (int byteCount)
{
if (byteCount < 0)
throw new ArgumentOutOfRangeException ();
return byteCount;
}
public override string GetString (byte[] bytes)
{
if (bytes == null)
throw new ArgumentNullException ();
return new String (GetChars (bytes, 0, bytes.Length));
}
public override string GetString (byte[] bytes, int byteIndex, int byteCount)
{
if (bytes == null)
throw new ArgumentNullException ();
if ((byteIndex < 0) || (byteCount < 0) ||
((byteIndex + byteCount) > bytes.Length))
throw new ArgumentOutOfRangeException ();
return new String (GetChars (bytes, byteIndex, byteCount));
}
}
}
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