// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
namespace Microsoft.Xml
{
    using System;
    using System.IO;
    using System.Text;
    using System.Runtime.Versioning;
 
    // Represents a writer that will make it possible to work with prefixes even
    // if the namespace is not specified.
    // This is not possible with XmlTextWriter. But this class inherits XmlTextWriter.
    internal class XmlDOMTextWriter : XmlTextWriter
    {
        public XmlDOMTextWriter(Stream w, Encoding encoding) : base(w, encoding)
        {
        }
 
        // [ResourceConsumption(ResourceScope.Machine)]
        // [ResourceExposure(ResourceScope.Machine)]
        public XmlDOMTextWriter(String filename, Encoding encoding) : base(filename, encoding)
        {
        }
 
        public XmlDOMTextWriter(TextWriter w) : base(w)
        {
        }
 
        // Overrides the baseclass implementation so that emptystring prefixes do
        // do not fail if namespace is not specified.
        public override void WriteStartElement(string prefix, string localName, string ns)
        {
            if ((ns.Length == 0) && (prefix.Length != 0))
                prefix = "";
 
            base.WriteStartElement(prefix, localName, ns);
        }
 
        // Overrides the baseclass implementation so that emptystring prefixes do
        // do not fail if namespace is not specified.
        public override void WriteStartAttribute(string prefix, string localName, string ns)
        {
            if ((ns.Length == 0) && (prefix.Length != 0))
                prefix = "";
 
            base.WriteStartAttribute(prefix, localName, ns);
        }
    }
}