72 lines
3.3 KiB
C#
72 lines
3.3 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.Blocks;
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public class CodeBlockModifier : BlockModifier
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{
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public override string ModifyLine(string line)
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{
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// Replace "@...@" zones with "<code>" tags.
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var me = new MatchEvaluator(CodeFormatMatchEvaluator);
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line = Regex.Replace(line,
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@"(?<before>^|([\s\([{]))" + // before
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"@" +
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@"(\|(?<lang>\w+)\|)?" + // lang
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"(?<code>[^@]+)" + // code
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"@" +
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@"(?<after>$|([\]}])|(?=" + Globals.PunctuationPattern + @"{1,2}|\s|$))", // after
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me);
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// Encode the contents of the "<code>" tags so that we don't
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// generate formatting out of it.
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line = NoTextileEncoder.EncodeNoTextileZones(line,
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@"(?<=(^|\s)<code(" + Globals.HtmlAttributesPattern + @")>)",
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@"(?=</code>)");
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return line;
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}
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public override string Conclude(string line)
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{
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// Recode everything except "<" and ">";
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line = NoTextileEncoder.DecodeNoTextileZones(line,
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@"(?<=(^|\s)<code(" + Globals.HtmlAttributesPattern + @")>)",
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@"(?=</code>)",
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new string[] { "<", ">" });
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return line;
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}
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public string CodeFormatMatchEvaluator(Match m)
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{
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var res = m.Groups["before"].Value + "<code";
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if (m.Groups["lang"].Length > 0)
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{
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res += " language=\"" + m.Groups["lang"].Value + "\"";
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}
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res += ">" + m.Groups["code"].Value + "</code>" + m.Groups["after"].Value;
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return res;
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}
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} |