134 lines
4.9 KiB
C#
134 lines
4.9 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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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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namespace Textile;
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public partial class TextileFormatter
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{
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private readonly Regex _velocityArguments =
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new Regex("nostyle(?<arg>.*?)/nostyle", RegexOptions.IgnoreCase | RegexOptions.Singleline);
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private string ArgMatchReplace(Match match)
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{
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return match.Result("${arg}");
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}
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#region Formatting Methods
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/// <summary>
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/// Formats the given text.
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/// </summary>
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/// <param name="input">The text to format.</param>
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public void Format(string input)
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{
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Output.Begin();
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// Clean the text...
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var str = PrepareInputForFormatting(input);
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// ...and format each line.
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foreach (var line in str.Split('\n'))
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{
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var tmp = line;
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// Let's see if the current state(s) is(are) finished...
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while (CurrentState != null && CurrentState.ShouldExit(tmp))
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{
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PopState();
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}
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if (!Regex.IsMatch(tmp, @"^\s*$"))
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{
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// Figure out the new state for this text line, if possible.
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if (CurrentState == null || CurrentState.ShouldParseForNewFormatterState(tmp))
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{
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tmp = HandleFormattingState(tmp);
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}
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// else, the current state doesn't want to be superceded by
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// a new one. We'll leave him be.
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// Modify the line with our block modifiers.
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if (CurrentState == null || CurrentState.ShouldFormatBlocks(tmp))
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{
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foreach (var blockModifier in _blockModifiers)
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{
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//TODO: if not disabled...
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tmp = blockModifier.ModifyLine(tmp);
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}
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for (var i = _blockModifiers.Count - 1; i >= 0; i--)
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{
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var blockModifier = _blockModifiers[i];
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tmp = blockModifier.Conclude(tmp);
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}
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}
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tmp = _velocityArguments.Replace(tmp, ArgMatchReplace);
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// Format the current line.
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CurrentState.FormatLine(tmp);
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}
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}
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// We're done. There might be a few states still on
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// the stack (for example if the text ends with a nested
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// list), so we must pop them all so that they have
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// their "Exit" method called correctly.
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while (_stackOfStates.Count > 0)
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{
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PopState();
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}
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Output.End();
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}
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#endregion
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#region Preparation Methods
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/// <summary>
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/// Cleans up a text before formatting.
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/// </summary>
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/// <param name="input">The text to clean up.</param>
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/// <returns>The clean text.</returns>
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/// This method cleans stuff like line endings, so that
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/// we don't have to bother with it while formatting.
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private string PrepareInputForFormatting(string input)
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{
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input = CleanWhiteSpace(input);
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return input;
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}
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private string CleanWhiteSpace(string text)
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{
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text = text.Replace("\r\n", "\n");
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text = text.Replace("\t", "");
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text = Regex.Replace(text, @"\n{3,}", "\n\n");
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text = Regex.Replace(text, @"\n *\n", "\n\n");
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text = Regex.Replace(text, "\"$", "\" ");
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return text;
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}
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#endregion
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} |