2022-03-15 18:00:53 +00:00
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// (c) Copyright Ascensio System SIA 2010-2022
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//
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2022-03-15 18:00:53 +00:00
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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2019-08-19 12:35:39 +00:00
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2022-03-17 15:13:38 +00:00
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namespace Textile.States;
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/// <summary>
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/// Base formatting state for all lists.
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/// </summary>
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2022-04-14 19:42:15 +00:00
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public abstract class ListFormatterState : FormatterState
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{
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2022-03-25 16:26:06 +00:00
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internal const string PatternBegin = @"^\s*(?<tag>";
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internal const string PatternEnd = @")" + Globals.BlockModifiersPattern + @"(?:\s+)? (?<content>.*)$";
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private bool _firstItem = true;
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private bool _firstItemLine = true;
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private string _tag;
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private string _attsInfo;
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private string _alignInfo;
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protected int NestingDepth
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{
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get { return _tag.Length; }
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}
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protected ListFormatterState(TextileFormatter formatter)
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: base(formatter)
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{
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}
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public override string Consume(string input, Match m)
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{
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_tag = m.Groups["tag"].Value;
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_alignInfo = m.Groups["align"].Value;
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_attsInfo = m.Groups["atts"].Value;
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input = m.Groups["content"].Value;
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this.Formatter.ChangeState(this);
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return input;
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}
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public sealed override void Enter()
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{
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_firstItem = true;
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_firstItemLine = true;
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WriteIndent();
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}
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public sealed override void Exit()
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{
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Formatter.Output.WriteLine("</li>");
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WriteOutdent();
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}
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public sealed override void FormatLine(string input)
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{
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if (_firstItemLine)
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{
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if (!_firstItem)
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{
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Formatter.Output.WriteLine("</li>");
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}
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Formatter.Output.Write("<li " + FormattedStylesAndAlignment("li") + ">");
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_firstItemLine = false;
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}
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else
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{
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Formatter.Output.WriteLine("<br />");
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}
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Formatter.Output.Write(input);
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_firstItem = false;
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}
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public sealed override bool ShouldNestState(FormatterState other)
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{
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var listState = (ListFormatterState)other;
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return listState.NestingDepth > NestingDepth;
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}
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public sealed override bool ShouldExit(string input)
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{
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// If we have an empty line, we can exit.
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if (string.IsNullOrEmpty(input))
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{
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return true;
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}
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// We exit this list if the next
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// list item is of the same type but less
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// deep as us, or of the other type of
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// list and as deep or less.
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if (NestingDepth > 1)
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{
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if (IsMatchForMe(input, 1, NestingDepth - 1))
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{
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return true;
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}
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}
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if (IsMatchForOthers(input, 1, NestingDepth))
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{
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return true;
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}
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// As it seems we're going to continue taking
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// care of this line, we take the opportunity
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// to check whether it's the same list item as
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// previously (no "**" or "##" tags), or if it's
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// a new list item.
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if (IsMatchForMe(input, NestingDepth, NestingDepth))
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{
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_firstItemLine = true;
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}
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return false;
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}
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public sealed override bool ShouldParseForNewFormatterState(string input)
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{
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// We don't let anyone but ourselves mess with our stuff.
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if (IsMatchForMe(input, 1, 100))
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{
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return true;
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}
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if (IsMatchForOthers(input, 1, 100))
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{
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return true;
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}
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return false;
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}
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protected abstract void WriteIndent();
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protected abstract void WriteOutdent();
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protected abstract bool IsMatchForMe(string input, int minNestingDepth, int maxNestingDepth);
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protected abstract bool IsMatchForOthers(string input, int minNestingDepth, int maxNestingDepth);
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protected string FormattedStylesAndAlignment(string element)
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{
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return BlockAttributesParser.ParseBlockAttributes(_alignInfo + _attsInfo, element);
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}
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}
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