DocSpace-client/common/ASC.Common/Utils/VelocityFormatter.cs

96 lines
3.7 KiB
C#

// (c) Copyright Ascensio System SIA 2010-2022
//
// This program is a free software product.
// You can redistribute it and/or modify it under the terms
// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
// Foundation. In accordance with Section 7(a) of the GNU AGPL 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 details, see
// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
//
// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
//
// The interactive user interfaces in modified source and object code versions of the Program must
// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
//
// Pursuant to Section 7(b) of the License you must retain the original Product logo when
// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
// trademark law for use of our trademarks.
//
// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
namespace ASC.Common.Utils;
public class TextLoader : ResourceLoader
{
public override void Init(Commons.Collections.ExtendedProperties configuration)
{
//nothing to configure
}
public override Stream GetResourceStream(string source)
{
return new MemoryStream(Encoding.UTF8.GetBytes(source));
}
public override long GetLastModified(NVelocity.Runtime.Resource.Resource resource)
{
return 1;
}
public override bool IsSourceModified(NVelocity.Runtime.Resource.Resource resource)
{
return false;
}
}
public static class VelocityFormatter
{
private static bool _initialized;
private static readonly ConcurrentDictionary<string, Template> _patterns = new ConcurrentDictionary<string, Template>();
public static string FormatText(string templateText, IDictionary<string, object> values)
{
var nvelocityContext = new VelocityContext();
foreach (var tagValue in values)
{
nvelocityContext.Put(tagValue.Key, tagValue.Value);
}
return FormatText(templateText, nvelocityContext);
}
public static string FormatText(string templateText, VelocityContext context)
{
if (!_initialized)
{
var properties = new Commons.Collections.ExtendedProperties();
properties.AddProperty("resource.loader", "custom");
properties.AddProperty("custom.resource.loader.class", "ASC.Common.Utils.TextLoader; ASC.Common");
properties.AddProperty("input.encoding", Encoding.UTF8.WebName);
properties.AddProperty("output.encoding", Encoding.UTF8.WebName);
Velocity.Init(properties);
_initialized = true;
}
using var writer = new StringWriter();
var key = templateText.GetHashCode().ToString();
if (!_patterns.TryGetValue(key, out var template))
{
template = Velocity.GetTemplate(templateText);
_patterns.TryAdd(key, template);
}
template.Merge(context, writer);
return writer.GetStringBuilder().ToString();
}
}