282 lines
11 KiB
C#
282 lines
11 KiB
C#
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/*
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* Copyright (c) 2014-2017, Eren Okka
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* Copyright (c) 2016-2017, Paul Miller
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* Copyright (c) 2017-2018, Tyler Bratton
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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using System.Text;
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namespace AnitomySharp;
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/// <summary>
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/// Utility class to assist in the parsing.
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/// </summary>
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public class ParserHelper(Parser parser)
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{
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private static readonly System.Buffers.SearchValues<char> s_myChars = System.Buffers.SearchValues.Create("xX\u00D7");
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private const string Dashes = "-\u2010\u2011\u2012\u2013\u2014\u2015";
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private const string DashesWithSpace = " -\u2010\u2011\u2012\u2013\u2014\u2015";
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private static readonly Dictionary<string, string> s_ordinals = new()
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{
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{"1st", "1"}, {"First", "1"},
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{"2nd", "2"}, {"Second", "2"},
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{"3rd", "3"}, {"Third", "3"},
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{"4th", "4"}, {"Fourth", "4"},
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{"5th", "5"}, {"Fifth", "5"},
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{"6th", "6"}, {"Sixth", "6"},
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{"7th", "7"}, {"Seventh", "7"},
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{"8th", "8"}, {"Eighth", "8"},
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{"9th", "9"}, {"Ninth", "9"}
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};
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/// <summary>
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/// Returns whether or not the <code>result</code> matches the <code>category</code>.
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/// </summary>
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public bool IsTokenCategory(int result, Token.TokenCategory category)
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{
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return Token.InListRange(result, parser.Tokens) && parser.Tokens[result].Category == category;
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}
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/// <summary>
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/// Returns whether or not the <code>str</code> is a CRC string.
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/// </summary>
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public static bool IsCrc32(string str)
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{
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return str.Length == 8 && StringHelper.IsHexadecimalString(str);
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}
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/// <summary>
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/// Returns whether or not the <code>character</code> is a dash character
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/// </summary>
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public static bool IsDashCharacter(char c)
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{
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return Dashes.Contains(c.ToString());
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}
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/// <summary>
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/// Returns a number from an original (e.g. 2nd)
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/// </summary>
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private static string GetNumberFromOrdinal(string str)
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{
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return string.IsNullOrEmpty(str) ? string.Empty : s_ordinals.GetValueOrDefault(str, "");
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}
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/// <summary>
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/// Returns the index of the first digit in the <code>str</code>; -1 otherwise.
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/// </summary>
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public static int IndexOfFirstDigit(string str)
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{
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if (string.IsNullOrEmpty(str)) return -1;
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for (int i = 0; i < str.Length; i++)
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{
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if (char.IsDigit(str, i))
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{
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return i;
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}
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}
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return -1;
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}
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/// <summary>
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/// Returns whether or not the <code>str</code> is a resolution.
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/// </summary>
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public static bool IsResolution(string str)
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{
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if (string.IsNullOrEmpty(str)) return false;
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const int minWidthSize = 3;
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const int minHeightSize = 3;
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switch (str.Length)
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{
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case >= minWidthSize + 1 + minHeightSize:
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{
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int pos = str.AsSpan().IndexOfAny(s_myChars);
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if (pos == -1 || pos < minWidthSize || pos > str.Length - (minHeightSize + 1)) return false;
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return !str.Where((t, i) => i != pos && !char.IsDigit(t)).Any();
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}
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case < minHeightSize + 1:
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return false;
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default:
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{
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if (char.ToLower(str[^1]) != 'p') return false;
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for (int i = 0; i < str.Length - 1; i++)
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{
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if (!char.IsDigit(str[i])) return false;
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}
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return true;
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}
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}
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}
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/// <summary>
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/// Returns whether or not the <code>category</code> is searchable.
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/// </summary>
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public static bool IsElementCategorySearchable(ElementCategory category)
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{
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return category switch
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{
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ElementCategory.ElementAnimeSeasonPrefix or ElementCategory.ElementAnimeType
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or ElementCategory.ElementAudioTerm or ElementCategory.ElementDeviceCompatibility
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or ElementCategory.ElementEpisodePrefix or ElementCategory.ElementFileChecksum
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or ElementCategory.ElementLanguage or ElementCategory.ElementOther
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or ElementCategory.ElementReleaseGroup or ElementCategory.ElementReleaseInformation
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or ElementCategory.ElementReleaseVersion or ElementCategory.ElementSource
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or ElementCategory.ElementSubtitles or ElementCategory.ElementVideoResolution
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or ElementCategory.ElementVideoTerm or ElementCategory.ElementVolumePrefix => true,
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_ => false
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};
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}
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/// <summary>
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/// Returns whether the <code>category</code> is singular.
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/// </summary>
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public static bool IsElementCategorySingular(ElementCategory category)
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{
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return category switch
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{
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ElementCategory.ElementAnimeSeason or ElementCategory.ElementAnimeType or ElementCategory.ElementAudioTerm
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or ElementCategory.ElementDeviceCompatibility or ElementCategory.ElementEpisodeNumber
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or ElementCategory.ElementLanguage or ElementCategory.ElementOther
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or ElementCategory.ElementReleaseInformation or ElementCategory.ElementSource
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or ElementCategory.ElementVideoTerm => false,
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_ => false
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};
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}
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/// <summary>
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/// Returns whether or not a token at the current <code>pos</code> is isolated(surrounded by braces).
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/// </summary>
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public bool IsTokenIsolated(int pos)
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{
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int prevToken = Token.FindPrevToken(parser.Tokens, pos, Token.TokenFlag.FlagNotDelimiter);
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if (!IsTokenCategory(prevToken, Token.TokenCategory.Bracket)) return false;
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int nextToken = Token.FindNextToken(parser.Tokens, pos, Token.TokenFlag.FlagNotDelimiter);
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return IsTokenCategory(nextToken, Token.TokenCategory.Bracket);
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}
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/// <summary>
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/// Finds and sets the anime season keyword.
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/// </summary>
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public bool CheckAndSetAnimeSeasonKeyword(Token token, int currentTokenPos)
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{
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int previousToken = Token.FindPrevToken(parser.Tokens, currentTokenPos, Token.TokenFlag.FlagNotDelimiter);
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if (Token.InListRange(previousToken, parser.Tokens))
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{
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string number = GetNumberFromOrdinal(parser.Tokens[previousToken].Content);
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if (!string.IsNullOrEmpty(number))
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{
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SetAnimeSeason(parser.Tokens[previousToken], token, number);
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return true;
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}
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}
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int nextToken = Token.FindNextToken(parser.Tokens, currentTokenPos, Token.TokenFlag.FlagNotDelimiter);
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if (!Token.InListRange(nextToken, parser.Tokens) ||
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!StringHelper.IsNumericString(parser.Tokens[nextToken].Content)) return false;
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SetAnimeSeason(token, parser.Tokens[nextToken], parser.Tokens[nextToken].Content);
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return true;
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void SetAnimeSeason(Token first, Token second, string content)
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{
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parser.Elements.Add(new Element(ElementCategory.ElementAnimeSeason, content));
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first.Category = Token.TokenCategory.Identifier;
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second.Category = Token.TokenCategory.Identifier;
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}
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}
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/// <summary>
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/// A Method to find the correct volume/episode number when prefixed (i.e. Vol.4).
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/// </summary>
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/// <param name="category">the category we're searching for</param>
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/// <param name="currentTokenPos">the current token position</param>
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/// <param name="token">the token</param>
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/// <returns>true if we found the volume/episode number</returns>
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public bool CheckExtentKeyword(ElementCategory category, int currentTokenPos, Token token)
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{
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int nToken = Token.FindNextToken(parser.Tokens, currentTokenPos, Token.TokenFlag.FlagNotDelimiter);
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if (!IsTokenCategory(nToken, Token.TokenCategory.Unknown)) return false;
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if (IndexOfFirstDigit(parser.Tokens[nToken].Content) != 0) return false;
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switch (category)
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{
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case ElementCategory.ElementEpisodeNumber:
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if (!parser.ParseNumber.MatchEpisodePatterns(parser.Tokens[nToken].Content, parser.Tokens[nToken]))
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{
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parser.ParseNumber.SetEpisodeNumber(parser.Tokens[nToken].Content, parser.Tokens[nToken], false);
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}
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break;
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case ElementCategory.ElementVolumeNumber:
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if (!parser.ParseNumber.MatchVolumePatterns(parser.Tokens[nToken].Content, parser.Tokens[nToken]))
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{
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parser.ParseNumber.SetVolumeNumber(parser.Tokens[nToken].Content, parser.Tokens[nToken], false);
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}
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break;
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}
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token.Category = Token.TokenCategory.Identifier;
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return true;
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}
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public void BuildElement(ElementCategory category, bool keepDelimiters, List<Token> tokens)
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{
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var element = new StringBuilder();
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for (int i = 0; i < tokens.Count; i++)
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{
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var token = tokens[i];
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switch (token.Category)
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{
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case Token.TokenCategory.Unknown:
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element.Append(token.Content);
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token.Category = Token.TokenCategory.Identifier;
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break;
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case Token.TokenCategory.Bracket:
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element.Append(token.Content);
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break;
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case Token.TokenCategory.Delimiter:
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string delimiter = "";
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if (!string.IsNullOrEmpty(token.Content))
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{
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delimiter = token.Content[0].ToString();
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}
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if (keepDelimiters)
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{
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element.Append(delimiter);
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}
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else if (Token.InListRange(i, tokens))
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{
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switch (delimiter)
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{
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case ",":
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case "&":
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element.Append(delimiter);
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break;
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default:
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element.Append(' ');
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break;
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}
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}
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break;
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}
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}
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if (!keepDelimiters)
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{
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element = new StringBuilder(element.ToString().Trim(DashesWithSpace.ToCharArray()));
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}
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if (!string.IsNullOrEmpty(element.ToString()))
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{
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parser.Elements.Add(new Element(category, element.ToString()));
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}
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}
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}
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