SharedSource-Build/BuildScript.Nuke/AppConfig.cs at develop · re-motion/SharedSource-Build · GitHub

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// Copyright (c) rubicon IT GmbH, www.rubicon.eu

// See the NOTICE file distributed with this work for additional information

// regarding copyright ownership. rubicon licenses this file to you under

// the Apache License, Version 2.0 (the "License"); you may not use this

// file except in compliance with the License. You may obtain a copy of the

// License at

// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

// License for the specific language governing permissions and limitations

// under the License.

using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml;

using System.Xml.Linq;

using System.Xml.XPath;

using Nuke.Common.IO;

namespace Remotion.BuildScript;

public class AppConfig

{

public static AppConfig FromText (string text, params (string prefix, string uri)[] namespaces)

{

var xDocument = XDocument.Parse(text);

return new AppConfig(xDocument, CreateXmlNamespaceManager(xDocument, namespaces));

}

public static AppConfig Read (AbsolutePath path, params (string prefix, string uri)[] namespaces)

{

var xDocument = XDocument.Load(path);

return new AppConfig(xDocument, CreateXmlNamespaceManager(xDocument, namespaces));

}

private static XmlNamespaceManager? CreateXmlNamespaceManager (XDocument xDocument, (string prefix, string uri)[] namespaces)

{

XmlNamespaceManager? xmlNamespaceManager = null;

if (namespaces?.Length > 0)

{

var reader = xDocument.CreateReader();

if (reader.NameTable != null)

{

xmlNamespaceManager = new XmlNamespaceManager(reader.NameTable);

foreach (var (prefix, uri) in namespaces)

xmlNamespaceManager.AddNamespace(prefix, uri);

}

return xmlNamespaceManager;

}

private readonly XDocument _xDocument;

private readonly XmlNamespaceManager? _xmlNamespaceManager;

public AppConfig (XDocument xDocument, XmlNamespaceManager? xmlNamespaceManager)

{

_xDocument = xDocument;

_xmlNamespaceManager = xmlNamespaceManager;

}

public string? GetAppSetting (string key)

{

var attribute = (XAttribute?) EvaluateXPathSingleOrDefault($"/configuration/appSettings/add[@key='{key}']/@value");

return attribute?.Value;

}

public void SetAppSetting (string key, string value)

{

var attribute = (XAttribute?) EvaluateXPathSingleOrDefault($"/configuration/appSettings/add[@key='{key}']/@value");

if (attribute != null)

{

attribute.Value = value;

}

else

{

var appSettingsElement = (XElement) EvaluateXPathSingle("/configuration/appSettings");

var newEntry = new XElement("add");

newEntry.SetAttributeValue("key", key);

newEntry.SetAttributeValue("value", value);

appSettingsElement.Add(newEntry);

}

public string? GetAttribute (string xPath, string attribute)

{

var element = (XElement?) EvaluateXPathSingleOrDefault(xPath);

return element?.Attribute(attribute)?.Value;

}

public void SetOrAddAttribute (string xPath, string attribute, string value)

{

var xElement = (XElement) EvaluateXPathSingle(xPath);

var xAttribute = xElement.Attribute(attribute);

if (xAttribute != null)

{

xAttribute.Value = value;

}

else

{

var newXAttribute = new XAttribute(attribute, value);

xElement.Add(newXAttribute);

}

public void WriteToFile (AbsolutePath absolutePath)

{

var writerSettings = new XmlWriterSettings { OmitXmlDeclaration = _xDocument.Declaration == null, Encoding = Encoding.UTF8 };

using var xmlWriter = XmlWriter.Create(absolutePath, writerSettings);

_xDocument.Save(xmlWriter);

}

private XObject? EvaluateXPathSingleOrDefault (string xPath)

{

var results = EvaluateXPath(xPath).ToList();

if (results.Count > 1)

throw new InvalidOperationException($"XPath expression '{xPath}' returned {results.Count} elements but 0 or 1 were expected.");

return results.Count > 0

? results[0]

: null;

}

private XObject EvaluateXPathSingle (string xPath)

{

var results = EvaluateXPath(xPath).ToList();

if (results.Count != 1)

throw new InvalidOperationException($"XPath expression '{xPath}' returned {results.Count} elements but exactly 1 was expected.");

return results[0];

}

private IEnumerable<XObject> EvaluateXPath (string xPath)

{

return ((IEnumerable) _xDocument.XPathEvaluate(xPath, _xmlNamespaceManager)).Cast<XObject>().ToList();

}

SharedSource-Build/BuildScript.Nuke/AppConfig.cs at develop · re-motion/SharedSource-Build · GitHub

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