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Linq-To-XML Style of Node Creation for C++

, 12 Apr 2016 Ms-PL
Linq-To-XML Node Creation for Native C++
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Elmax.vsmdi
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Elmax.vsmdi
Elmax.vcxproj.user
Local.testsettings
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TraceAndTestImpact.testsettings
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Elmax.vsmdi
Elmax.vcxproj.user
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TestNativeElmax.vcxproj.user
TestNetElmax.csproj.user
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Elmax.vsmdi
Elmax.vcxproj.user
Local.testsettings
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TraceAndTestImpact.testsettings
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Tryout.vcxproj.user
Elmax-ver089
Elmax.vsmdi
Elmax
Elmax.vcxproj.user
StringUtils
ElmaxNet
Properties
Local.testsettings
TestNativeElmax
app.ico
TestNativeElmax.vcxproj.user
TestNetElmax
Properties
TestNetElmax.csproj.user
TraceAndTestImpact.testsettings
Tryout
res
Tryout.ico
Tryout.vcxproj.user
TryoutNet
Properties
Elmax.vsmdi
Elmax.vcxproj.user
Local.testsettings
app.ico
TestNativeElmax.vcxproj.user
TestNetElmax.csproj.user
TraceAndTestImpact.testsettings
Tryout.ico
Tryout.vcxproj.user
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Xml;

namespace Elmax
{
    public class RootElement : Element
    {
        /// <summary>
        /// Can the file be written to?
        /// </summary>
        /// <param name="FilePath">the fully qualified file and path name for the file</param>
        /// <param name="OverWrite">true if the existing file can be overwritten</param>
        /// <param name="CreateFolder">true to create the folders if they are not already there</param>
        /// <returns></returns>
        protected bool CanWriteFile(string FilePath, bool OverWrite, bool CreateFolder)
        {
	        if (File.Exists(FilePath))
	        {
		        return OverWrite;
	        }

            string Folder = Path.GetDirectoryName(FilePath);

            try
            {
                DirectoryInfo dirInfo = new DirectoryInfo(Folder);
                if(dirInfo.Exists)
                    return true;
            }
            catch (System.Exception)
            {
            	
            }

	        if (CreateFolder)
	        {
		        DirectoryInfo dirInfoFolder = Directory.CreateDirectory(Folder);

                return dirInfoFolder.Exists;
	        }

	        return false;

        }
        /// <summary>
        /// Constructor loads the supplied file if it exists or creates an empty XML DOM if it does not
        /// </summary>
        /// <param name="FilePath"></param>
        public RootElement(string FilePath = "") 
            : base()
        { 
            LoadFile(FilePath); 
        }
        
        /// <summary>
        /// Load a XML file
        /// </summary>
        /// <param name="FilePath">loads the supplied file</param>
        /// <returns>return true if successful</returns>
        public bool LoadFile(string FilePath = "")
        {
            UnloadFile();

            _Doc = new XmlDocument();

            if (File.Exists(FilePath))
            {
                _Doc.Load(FilePath);
            }

            SetDomDoc(_Doc);
            m_FilePath = FilePath;

            return true;
        }

		//! 
        /// <summary>
        /// Check if a file is loaded into the object
        /// </summary>
        /// <returns>returns true if file is loaded</returns>
        public bool IsFileLoaded() 
        { 
            return null != _Doc; 
        }

        /// <summary>
        /// Unload the file from memory - it is NOT saved first
        /// </summary>
        /// <returns>always true</returns>
        public bool UnloadFile()
        {
            _Doc = null;  // calls Release() for us
            m_FilePath = string.Empty;
            return true;
        }
        
        /// <summary>
        /// Get the path to the XML file
        /// </summary>
        /// <returns>XML File Path</returns>
        public string GetFilePath() 
        { 
            return m_FilePath; 
        }

        /// <summary>
        /// Set a new path for the XML file
        /// </summary>
        /// <param name="FilePath">XML File Path</param>
        /// <returns>false if no document is currently loaded</returns>
        public bool SetFilePath(string FilePath)
        {
            if (null == _Doc)
            {
                return false;
            }

            m_FilePath = FilePath;
            return true;
        }

        /// <summary>
        /// Save the file, specify a new path to change the files name and/or location
        /// </summary>
        /// <param name="FilePath">the fully qualified file and path name for the file</param>
        /// <param name="OverWrite">true if the existing file can be overwritten</param>
        /// <param name="CreateFolder">true to create the folders if they are not already there</param>
        /// <returns>true if the file was successfully saved</returns>
        public bool SaveFile(string FilePath = "", bool OverWrite = true, bool CreateFolder = false)
        {
	        if (null == _Doc)
	        {
		        return false;
	        }

	        if (string.IsNullOrEmpty(FilePath)==false)
	        {
		        m_FilePath = FilePath;
	        }

	        if (CanWriteFile(m_FilePath, OverWrite, CreateFolder))
	        {
		        Elmax.Document doc = new Elmax.Document(_Doc);
		        return doc.PrettySave(m_FilePath);
	        }

	        return false;
        }

        /// <summary>
		/// File path name for the XML document
		/// </summary>
        private string m_FilePath;

    }
}

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This article, along with any associated source code and files, is licensed under The Microsoft Public License (Ms-PL)

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About the Author

Shao Voon Wong
Software Developer (Senior)
United States United States
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