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#region PDFsharp - A .NET library for processing PDF
//
// Authors:
// Stefan Lange (mailto:Stefan.Lange@pdfsharp.com)
//
// Copyright (c) 2005-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://sourceforge.net/projects/pdfsharp
//
// 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.
#endregion
using System;
using System.Diagnostics;
using System.Text;
namespace PdfSharp.Pdf.Internal
{
/// <summary>
/// An encoder for PDF AnsiEncoding.
/// </summary>
internal sealed class AnsiEncoding : Encoding
{
public AnsiEncoding()
{
}
public override int GetByteCount(char[] chars, int index, int count)
{
return PdfEncoders.WinAnsiEncoding.GetByteCount(chars, index, count);
}
public override int GetBytes(char[] chars, int charIndex, int charCount, byte[] bytes, int byteIndex)
{
byte[] ansi = PdfEncoders.WinAnsiEncoding.GetBytes(chars, charIndex, charCount);
//for (int idx = 0, count = ansi.Length; count > 0; idx++, byteIndex++, count--)
// bytes[byteIndex] = AnsiToUnicode[ansi[idx]];
return ansi.Length;
}
public override int GetCharCount(byte[] bytes, int index, int count)
{
//return PdfEncoders.WinAnsiEncoding.GetCharCount(bytes, index, count);
Debug.Assert(PdfEncoders.WinAnsiEncoding.GetCharCount(bytes, index, count) == count);
return count;
}
public override int GetChars(byte[] bytes, int byteIndex, int byteCount, char[] chars, int charIndex)
{
throw new NotImplementedException("GetChars");
//for (; byteCount > 0; byteIndex++, charIndex++, byteCount--)
// chars[charIndex] = '\ubytes[byteIndex];
//return byteCount;
}
public override int GetMaxByteCount(int charCount)
{
return charCount;
}
public override int GetMaxCharCount(int byteCount)
{
return byteCount;
}
/// <summary>
/// Indicates whether the specified Unicode character is available in the ANSI code page 1252.
/// </summary>
public static bool IsAnsi1252Char(char ch)
{
if (ch < '\u00FF') // HACK?
return true;
switch (ch)
{
case '\u20AC':
case '\u0081':
case '\u201A':
case '\u0192':
case '\u201E':
case '\u2026':
case '\u2020':
case '\u2021':
case '\u02C6':
case '\u2030':
case '\u0160':
case '\u2039':
case '\u0152':
case '\u008D':
case '\u017D':
case '\u008F':
case '\u0090':
case '\u2018':
case '\u2019':
case '\u201C':
case '\u201D':
case '\u2022':
case '\u2013':
case '\u2014':
case '\u02DC':
case '\u2122':
case '\u0161':
case '\u203A':
case '\u0153':
case '\u009D':
case '\u017E':
case '\u0178':
return true;
}
return false;
}
/// <summary>
/// Converts WinAnsi to Unicode characters.
/// </summary>
static char[] AnsiToUnicode = new char[256]
{
// 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
/* 00 */ '\u0000', '\u0001', '\u0002', '\u0003', '\u0004', '\u0005', '\u0006', '\u0007', '\u0008', '\u0009', '\u000A', '\u000B', '\u000C', '\u000D', '\u000E', '\u000F',
/* 10 */ '\u0010', '\u0011', '\u0012', '\u0013', '\u0014', '\u0015', '\u0016', '\u0017', '\u0018', '\u0019', '\u001A', '\u001B', '\u001C', '\u001D', '\u001E', '\u001F',
/* 20 */ '\u0020', '\u0021', '\u0022', '\u0023', '\u0024', '\u0025', '\u0026', '\u0027', '\u0028', '\u0029', '\u002A', '\u002B', '\u002C', '\u002D', '\u002E', '\u002F',
/* 30 */ '\u0030', '\u0031', '\u0032', '\u0033', '\u0034', '\u0035', '\u0036', '\u0037', '\u0038', '\u0039', '\u003A', '\u003B', '\u003C', '\u003D', '\u003E', '\u003F',
/* 40 */ '\u0040', '\u0041', '\u0042', '\u0043', '\u0044', '\u0045', '\u0046', '\u0047', '\u0048', '\u0049', '\u004A', '\u004B', '\u004C', '\u004D', '\u004E', '\u004F',
/* 50 */ '\u0050', '\u0051', '\u0052', '\u0053', '\u0054', '\u0055', '\u0056', '\u0057', '\u0058', '\u0059', '\u005A', '\u005B', '\u005C', '\u005D', '\u005E', '\u005F',
/* 60 */ '\u0060', '\u0061', '\u0062', '\u0063', '\u0064', '\u0065', '\u0066', '\u0067', '\u0068', '\u0069', '\u006A', '\u006B', '\u006C', '\u006D', '\u006E', '\u006F',
/* 70 */ '\u0070', '\u0071', '\u0072', '\u0073', '\u0074', '\u0075', '\u0076', '\u0077', '\u0078', '\u0079', '\u007A', '\u007B', '\u007C', '\u007D', '\u007E', '\u007F',
/* 80 */ '\u20AC', '\u0081', '\u201A', '\u0192', '\u201E', '\u2026', '\u2020', '\u2021', '\u02C6', '\u2030', '\u0160', '\u2039', '\u0152', '\u008D', '\u017D', '\u008F',
/* 90 */ '\u0090', '\u2018', '\u2019', '\u201C', '\u201D', '\u2022', '\u2013', '\u2014', '\u02DC', '\u2122', '\u0161', '\u203A', '\u0153', '\u009D', '\u017E', '\u0178',
/* A0 */ '\u00A0', '\u00A1', '\u00A2', '\u00A3', '\u00A4', '\u00A5', '\u00A6', '\u00A7', '\u00A8', '\u00A9', '\u00AA', '\u00AB', '\u00AC', '\u00AD', '\u00AE', '\u00AF',
/* B0 */ '\u00B0', '\u00B1', '\u00B2', '\u00B3', '\u00B4', '\u00B5', '\u00B6', '\u00B7', '\u00B8', '\u00B9', '\u00BA', '\u00BB', '\u00BC', '\u00BD', '\u00BE', '\u00BF',
/* C0 */ '\u00C0', '\u00C1', '\u00C2', '\u00C3', '\u00C4', '\u00C5', '\u00C6', '\u00C7', '\u00C8', '\u00C9', '\u00CA', '\u00CB', '\u00CC', '\u00CD', '\u00CE', '\u00CF',
/* D0 */ '\u00D0', '\u00D1', '\u00D2', '\u00D3', '\u00D4', '\u00D5', '\u00D6', '\u00D7', '\u00D8', '\u00D9', '\u00DA', '\u00DB', '\u00DC', '\u00DD', '\u00DE', '\u00DF',
/* E0 */ '\u00E0', '\u00E1', '\u00E2', '\u00E3', '\u00E4', '\u00E5', '\u00E6', '\u00E7', '\u00E8', '\u00E9', '\u00EA', '\u00EB', '\u00EC', '\u00ED', '\u00EE', '\u00EF',
/* F0 */ '\u00F0', '\u00F1', '\u00F2', '\u00F3', '\u00F4', '\u00F5', '\u00F6', '\u00F7', '\u00F8', '\u00F9', '\u00FA', '\u00FB', '\u00FC', '\u00FD', '\u00FE', '\u00FF',
};
}
}
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