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// (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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2022-02-17 09:08:01 +00:00
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namespace Textile.Blocks;
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public class ImageBlockModifier : 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,
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@"\!" + // opening !
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@"(?<algn>\<|\=|\>)?" + // optional alignment atts
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Globals.BlockModifiersPattern + // optional style, public class atts
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@"(?:\. )?" + // optional dot-space
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@"(?<url>[^\s(!]+)" + // presume this is the src
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@"\s?" + // optional space
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@"(?:\((?<title>([^\)]+))\))?" +// optional title
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@"\!" + // closing
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@"(?::(?<href>(\S+)))?" + // optional href
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@"(?=\s|\.|,|;|\)|\||$)", // lookahead: space or simple punctuation or end of string
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new MatchEvaluator(ImageFormatMatchEvaluator)
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);
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return line;
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}
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string ImageFormatMatchEvaluator(Match m)
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{
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var atts = BlockAttributesParser.ParseBlockAttributes(m.Groups["atts"].Value, "img");
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if (m.Groups["algn"].Length > 0)
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{
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atts += " align=\"" + Globals.ImageAlign[m.Groups["algn"].Value] + "\"";
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}
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if (m.Groups["title"].Length > 0)
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{
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atts += " title=\"" + m.Groups["title"].Value + "\"";
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atts += " alt=\"" + m.Groups["title"].Value + "\"";
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}
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else
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{
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atts += " alt=\"\"";
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}
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// Get Image Size?
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var res = "<img src=\"" + m.Groups["url"].Value + "\"" + atts + " />";
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if (m.Groups["href"].Length > 0)
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{
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var href = m.Groups["href"].Value;
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var end = string.Empty;
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var endMatch = Regex.Match(href, @"(.*)(?<end>\.|,|;|\))$");
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if (m.Success && !string.IsNullOrEmpty(endMatch.Groups["end"].Value))
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{
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href = href[0..^1];
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end = endMatch.Groups["end"].Value;
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}
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res = "<a href=\"" + Globals.EncodeHTMLLink(href) + "\">" + res + "</a>" + end;
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}
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return res;
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}
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}
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