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Hopefully fixed codepage in the ebu text reading method

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git-svn-id: https://subtitleedit.googlecode.com/svn/trunk@53 99eadd0c-20b8-1223-b5c4-2a2b2df33de2
This commit is contained in:
niksedk 2010-10-15 20:52:29 +00:00
parent 091b58f8f6
commit 4d9096656c
1 changed files with 145 additions and 33 deletions
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154
src/Logic/SubtitleFormats/Ebu.cs
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@ -1,8 +1,6 @@
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
{
@ -174,6 +172,126 @@ namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
return header;
}
/// <summary>
/// Get text with regard code page from header
/// </summary>
/// <param name="skipNext">Skip next character</param>
/// <param name="header">EBU header</param>
/// <param name="buffer">data buffer</param>
/// <param name="index">index to current byte in buffer</param>
/// <returns>Character at index</returns>
private string GetCharacter(out bool skipNext, EbuGeneralSubtitleInformation header, byte[] buffer, int index)
{
skipNext = false;
if (header.CharacterCodeTableNumber == "00")
{
//note that 0xC1—0xCF combines characters - http://en.wikipedia.org/wiki/ISO/IEC_6937
Encoding encoding = Encoding.GetEncoding(20269);
string next = encoding.GetString(buffer, index + 1, 1);
switch (buffer[index])
{
case 0xc1:
skipNext = "aeiou".Contains(next.ToLower());
switch (next)
{
case "a": return "à";
case "e": return "è";
case "i": return "ì";
case "o": return "ò";
case "u": return "ù";
case "A": return "À";
case "E": return "È";
case "I": return "Ì";
case "O": return "Ò";
case "U": return "Ù";
}
return string.Empty;
case 0xc2:
skipNext = "aeiou".Contains(next.ToLower());
switch (next)
{
case "a": return "á";
case "e": return "é";
case "i": return "í";
case "o": return "ó";
case "u": return "ú";
case "A": return "Á";
case "E": return "É";
case "I": return "Í";
case "O": return "Ó";
case "U": return "Ú";
}
return string.Empty;
case 0xc3:
skipNext = "aeiou".Contains(next.ToLower());
switch (next)
{
case "a": return "â";
case "e": return "ê";
case "i": return "î";
case "o": return "ô";
case "u": return "û";
case "A": return "Â";
case "E": return "Ê";
case "I": return "Î";
case "O": return "Ô";
case "U": return "Û";
}
return string.Empty;
case 0xc4:
skipNext = "ao".Contains(next.ToLower());
switch (next)
{
case "a": return "ã";
case "o": return "õ";
case "A": return "Ã";
case "E": return "Õ";
}
return string.Empty;
case 0xc8:
skipNext = "aeiou".Contains(next.ToLower());
switch (next)
{
case "a": return "ä";
case "e": return "ë";
case "i": return "ï";
case "o": return "ö";
case "u": return "ü";
case "A": return "Ä";
case "E": return "Ë";
case "I": return "Ï";
case "O": return "Ö";
case "U": return "Ü";
}
return string.Empty;
default:
return encoding.GetString(buffer, index, 1);
}
}
else if (header.CharacterCodeTableNumber == "01") // Latin/Cyrillic alphabet - from ISO 8859/5-1988
{
Encoding encoding = Encoding.GetEncoding("ISO-8859-5");
return encoding.GetString(buffer, index, 1);
}
else if (header.CharacterCodeTableNumber == "02") // Latin/Arabic alphabet - from ISO 8859/6-1987
{
Encoding encoding = Encoding.GetEncoding("ISO-8859-6");
return encoding.GetString(buffer, index, 1);
}
else if (header.CharacterCodeTableNumber == "03") // Latin/Greek alphabet - from ISO 8859/7-1987
{
Encoding encoding = Encoding.GetEncoding("ISO-8859-7"); // or ISO-8859-1 ?
return encoding.GetString(buffer, index, 1);
}
else if (header.CharacterCodeTableNumber == "04") // Latin/Hebrew alphabet - from ISO 8859/8-1988
{
Encoding encoding = Encoding.GetEncoding("ISO-8859-8");
return encoding.GetString(buffer, index, 1);
}
return string.Empty;
}
private IEnumerable<EbuTextTimingInformation> ReadTTI(byte[] buffer, EbuGeneralSubtitleInformation header)
{
const int StartOfTTI = 1024;
@ -185,18 +303,6 @@ namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
const byte UnderlineOn = 0x82;
const byte UnderlineOff = 0x83;
Encoding encoding = Encoding.Default;
//try
//{
// if (header.CharacterCodeTableNumber == "00")
// encoding = Encoding.GetEncoding("ISO-8859-1");
// else
// encoding = Encoding.GetEncoding(int.Parse(header.CodePageNumber));
//}
//catch
//{
// // will fall-back to default encoding
//}
List<EbuTextTimingInformation> list = new List<EbuTextTimingInformation>();
int index = StartOfTTI;
while (index + TTISize < buffer.Length)
@ -214,9 +320,16 @@ namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
tti.TimeCodeOutMilliseconds = (int)(1000 / (header.FrameRate / buffer[index + 9 + 3]));
tti.CommentFlag = buffer[index + 15];
// text
// build text
bool skipNext = false;
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 112; i++)
{
if (skipNext)
{
skipNext = false;
}
else
{
if (buffer[index + 16 + i] == TextFieldCRLF)
sb.AppendLine();
@ -230,10 +343,9 @@ namespace Nikse.SubtitleEdit.Logic.SubtitleFormats
sb.Append("</u>");
else if (buffer[index + 16 + i] == TextFieldTerminator)
break;
else if (buffer[index + 16 + i] >= 0x20 && buffer[index + 16 + i] <= 0x7F)
sb.Append(encoding.GetString(buffer, index+16+i, 1));
else if (buffer[index + 16 + i] >= 0xA1)
sb.Append(encoding.GetString(buffer, index+16+i, 1));
else if ((buffer[index + 16 + i] >= 0x20 && buffer[index + 16 + i] <= 0x7F) || buffer[index + 16 + i] >= 0xA1)
sb.Append(GetCharacter(out skipNext, header, buffer, index + 16 + i));
}
}
tti.TextField = sb.ToString();