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Diffstat (limited to 'Emby.Server.Implementations/TextEncoding/UniversalDetector/Core/MBCSGroupProber.cs')
| -rw-r--r-- | Emby.Server.Implementations/TextEncoding/UniversalDetector/Core/MBCSGroupProber.cs | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/Emby.Server.Implementations/TextEncoding/UniversalDetector/Core/MBCSGroupProber.cs b/Emby.Server.Implementations/TextEncoding/UniversalDetector/Core/MBCSGroupProber.cs deleted file mode 100644 index abf49aacd..000000000 --- a/Emby.Server.Implementations/TextEncoding/UniversalDetector/Core/MBCSGroupProber.cs +++ /dev/null @@ -1,175 +0,0 @@ -/* ***** BEGIN LICENSE BLOCK ***** - * Version: MPL 1.1/GPL 2.0/LGPL 2.1 - * - * The contents of this file are subject to the Mozilla Public License Version - * 1.1 (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS IS" basis, - * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License - * for the specific language governing rights and limitations under the - * License. - * - * The Original Code is Mozilla Universal charset detector code. - * - * The Initial Developer of the Original Code is - * Netscape Communications Corporation. - * Portions created by the Initial Developer are Copyright (C) 2001 - * the Initial Developer. All Rights Reserved. - * - * Contributor(s): - * Shy Shalom <shooshX@gmail.com> - * Rudi Pettazzi <rudi.pettazzi@gmail.com> (C# port) - * - * Alternatively, the contents of this file may be used under the terms of - * either the GNU General Public License Version 2 or later (the "GPL"), or - * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), - * in which case the provisions of the GPL or the LGPL are applicable instead - * of those above. If you wish to allow use of your version of this file only - * under the terms of either the GPL or the LGPL, and not to allow others to - * use your version of this file under the terms of the MPL, indicate your - * decision by deleting the provisions above and replace them with the notice - * and other provisions required by the GPL or the LGPL. If you do not delete - * the provisions above, a recipient may use your version of this file under - * the terms of any one of the MPL, the GPL or the LGPL. - * - * ***** END LICENSE BLOCK ***** */ - -using System; - -namespace UniversalDetector.Core -{ - /// <summary> - /// Multi-byte charsets probers - /// </summary> - public class MBCSGroupProber : CharsetProber - { - private const int PROBERS_NUM = 7; - private readonly static string[] ProberName = - { "UTF8", "SJIS", "EUCJP", "GB18030", "EUCKR", "Big5", "EUCTW" }; - private CharsetProber[] probers = new CharsetProber[PROBERS_NUM]; - private bool[] isActive = new bool[PROBERS_NUM]; - private int bestGuess; - private int activeNum; - - public MBCSGroupProber() - { - probers[0] = new UTF8Prober(); - probers[1] = new SJISProber(); - probers[2] = new EUCJPProber(); - probers[3] = new GB18030Prober(); - probers[4] = new EUCKRProber(); - probers[5] = new Big5Prober(); - probers[6] = new EUCTWProber(); - Reset(); - } - - public override string GetCharsetName() - { - if (bestGuess == -1) { - GetConfidence(); - if (bestGuess == -1) - bestGuess = 0; - } - return probers[bestGuess].GetCharsetName(); - } - - public override void Reset() - { - activeNum = 0; - for (int i = 0; i < probers.Length; i++) { - if (probers[i] != null) { - probers[i].Reset(); - isActive[i] = true; - ++activeNum; - } else { - isActive[i] = false; - } - } - bestGuess = -1; - state = ProbingState.Detecting; - } - - public override ProbingState HandleData(byte[] buf, int offset, int len) - { - // do filtering to reduce load to probers - byte[] highbyteBuf = new byte[len]; - int hptr = 0; - //assume previous is not ascii, it will do no harm except add some noise - bool keepNext = true; - int max = offset + len; - - for (int i = offset; i < max; i++) { - if ((buf[i] & 0x80) != 0) { - highbyteBuf[hptr++] = buf[i]; - keepNext = true; - } else { - //if previous is highbyte, keep this even it is a ASCII - if (keepNext) { - highbyteBuf[hptr++] = buf[i]; - keepNext = false; - } - } - } - - ProbingState st = ProbingState.NotMe; - - for (int i = 0; i < probers.Length; i++) { - if (!isActive[i]) - continue; - st = probers[i].HandleData(highbyteBuf, 0, hptr); - if (st == ProbingState.FoundIt) { - bestGuess = i; - state = ProbingState.FoundIt; - break; - } else if (st == ProbingState.NotMe) { - isActive[i] = false; - activeNum--; - if (activeNum <= 0) { - state = ProbingState.NotMe; - break; - } - } - } - return state; - } - - public override float GetConfidence() - { - float bestConf = 0.0f; - float cf = 0.0f; - - if (state == ProbingState.FoundIt) { - return 0.99f; - } else if (state == ProbingState.NotMe) { - return 0.01f; - } else { - for (int i = 0; i < PROBERS_NUM; i++) { - if (!isActive[i]) - continue; - cf = probers[i].GetConfidence(); - if (bestConf < cf) { - bestConf = cf; - bestGuess = i; - } - } - } - return bestConf; - } - - public override void DumpStatus() - { - float cf; - GetConfidence(); - for (int i = 0; i < PROBERS_NUM; i++) { - if (!isActive[i]) { - //Console.WriteLine(" MBCS inactive: {0} (confidence is too low).", ProberName[i]); - } else { - cf = probers[i].GetConfidence(); - //Console.WriteLine(" MBCS {0}: [{1}]", cf, ProberName[i]); - } - } - } - } -} |