DocSpace-buildtools/common/ASC.Notify.Textile/JabberStyler.cs

125 lines
5.2 KiB
C#

/*
*
* (c) Copyright Ascensio System Limited 2010-2018
*
* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
*
* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
*
* You can contact Ascensio System SIA by email at sales@onlyoffice.com
*
* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
*
* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
* relevant author attributions when distributing the software. If the display of the logo in its graphic
* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
* in every copy of the program you distribute.
* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
*
*/
namespace ASC.Notify.Textile;
[Scope]
public class JabberStyler : IPatternStyler
{
private static readonly Regex _velocityArguments
= new Regex(NVelocityPatternFormatter.NoStylePreffix + "(?<arg>.*?)" + NVelocityPatternFormatter.NoStyleSuffix,
RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Compiled);
private static readonly Regex _linkReplacer
= new Regex(@"""(?<text>[\w\W]+?)"":""(?<link>[^""]+)""",
RegexOptions.Singleline | RegexOptions.Compiled);
private static readonly Regex _textileReplacer
= new Regex(@"(h1\.|h2\.|\*|h3\.|\^)",
RegexOptions.Singleline | RegexOptions.Compiled);
private static readonly Regex _brReplacer
= new Regex(@"<br\s*\/*>",
RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace
| RegexOptions.Compiled | RegexOptions.Singleline);
private static readonly Regex _closedTagsReplacer
= new Regex(@"</(p|div)>",
RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace
| RegexOptions.Compiled | RegexOptions.Singleline);
private static readonly Regex _tagReplacer
= new Regex(@"<(.|\n)*?>",
RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace
| RegexOptions.Compiled | RegexOptions.Singleline);
private static readonly Regex _multiLineBreaksReplacer
= new Regex(@"(?:\r\n|\r(?!\n)|(?!<\r)\n){3,}",
RegexOptions.IgnoreCase | RegexOptions.CultureInvariant);
public void ApplyFormating(NoticeMessage message)
{
var sb = new StringBuilder();
if (!string.IsNullOrEmpty(message.Subject))
{
sb.AppendLine(_velocityArguments.Replace(message.Subject, ArgMatchReplace));
message.Subject = string.Empty;
}
if (string.IsNullOrEmpty(message.Body))
{
return;
}
var lines = message.Body.Split(new[] { Environment.NewLine, "\n" }, StringSplitOptions.None);
for (var i = 0; i < lines.Length - 1; i++)
{
ref var line = ref lines[i];
if (string.IsNullOrEmpty(line))
{
sb.AppendLine();
continue;
}
line = _velocityArguments.Replace(line, ArgMatchReplace);
sb.AppendLine(_linkReplacer.Replace(line, EvalLink));
}
ref var lastLine = ref lines[^1];
lastLine = _velocityArguments.Replace(lastLine, ArgMatchReplace);
sb.Append(_linkReplacer.Replace(lastLine, EvalLink));
var body = sb.ToString();
body = _textileReplacer.Replace(HttpUtility.HtmlDecode(body), ""); //Kill textile markup
body = _brReplacer.Replace(body, Environment.NewLine);
body = _closedTagsReplacer.Replace(body, Environment.NewLine);
body = _tagReplacer.Replace(body, "");
body = _multiLineBreaksReplacer.Replace(body, Environment.NewLine);
message.Body = body;
}
private string EvalLink(Match match)
{
if (match.Success)
{
if (match.Groups["text"].Success && match.Groups["link"].Success)
{
if (match.Groups["text"].Value.Equals(match.Groups["link"].Value, StringComparison.OrdinalIgnoreCase))
{
return " " + match.Groups["text"].Value + " ";
}
return match.Groups["text"].Value + $" ( {match.Groups["link"].Value} )";
}
}
return match.Value;
}
private string ArgMatchReplace(Match match)
{
return match.Result("${arg}");
}
}