109 lines
5.0 KiB
C#
109 lines
5.0 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 GlyphBlockModifier : BlockModifier
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{
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public override string ModifyLine(string line)
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{
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line = Regex.Replace(line, "\"\\z", "\" ");
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// fix: hackish
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string[,] glyphs = {
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{ @"([^\s[{(>_*])?\'(?(1)|(\s|s\b|" + Globals.PunctuationPattern + @"))", "$1’$2" }, // single closing
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{ @"\'", "‘" }, // single opening
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{ @"([^\s[{(>_*])?""(?(1)|(\s|" + Globals.PunctuationPattern + @"))", "$1”$2" }, // double closing
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{ @"""", "“" }, // double opening
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{ @"\b( )?\.{3}", "$1…" }, // ellipsis
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{ @"\b([A-Z][A-Z0-9]{2,})\b(?:[(]([^)]*)[)])", "<acronym title=\"$2\">$1</acronym>" }, // 3+ uppercase acronym
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{ @"(\s)?--(\s)?", "$1—$2" }, // em dash
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{ @"\s-\s", " – " }, // en dash
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{ @"(\d+)( )?x( )?(\d+)", "$1$2×$3$4" }, // dimension sign
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{ @"\b ?[([](TM|tm)[])]", "™" }, // trademark
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{ @"\b ?[([](R|r)[])]", "®" }, // registered
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{ @"\b ?[([](C|c)[])]", "©" } // copyright
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};
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var sb = new StringBuilder();
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if (!Regex.IsMatch(line, "<.*>"))
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{
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// If no HTML, do a simple search & replace.
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for (var i = 0; i < glyphs.GetLength(0); ++i)
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{
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line = Regex.Replace(line, glyphs[i, 0], glyphs[i, 1]);
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}
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sb.Append(line);
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}
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else
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{
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var splits = Regex.Split(line, "(<.*?>)");
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var offtags = "code|pre|notextile";
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var codepre = false;
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foreach (var split in splits)
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{
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var modifiedSplit = split;
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if (modifiedSplit.Length == 0)
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{
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continue;
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}
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if (Regex.IsMatch(modifiedSplit, @"<(" + offtags + ")>"))
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{
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codepre = true;
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}
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if (Regex.IsMatch(modifiedSplit, @"<\/(" + offtags + ")>"))
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{
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codepre = false;
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}
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if (!Regex.IsMatch(modifiedSplit, "<.*>") && !codepre)
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{
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for (var i = 0; i < glyphs.GetLength(0); ++i)
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{
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modifiedSplit = Regex.Replace(modifiedSplit, glyphs[i, 0], glyphs[i, 1]);
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}
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}
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// do htmlspecial if between <code>
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if (codepre)
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{
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//TODO: htmlspecialchars(line)
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//line = Regex.Replace(line, @"<(\/?" + offtags + ")>", "<$1>");
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//line = line.Replace("&#", "&#");
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}
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sb.Append(modifiedSplit);
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}
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}
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return sb.ToString();
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}
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}
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