XmlUtf8RawTextWriterIndent.cs

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using System.IO;
using System.Threading.Tasks;
 
namespace System.Xml;
 
internal class XmlUtf8RawTextWriterIndent : XmlUtf8RawTextWriter
{
    protected int _indentLevel;
 
    protected bool _newLineOnAttributes;
 
    protected string _indentChars;
 
    protected bool _mixedContent;
 
    private BitStack _mixedContentStack;
 
    protected ConformanceLevel _conformanceLevel;
 
    public override XmlWriterSettings Settings
    {
        get
        {
            XmlWriterSettings settings = base.Settings;
            settings.ReadOnly = false;
            settings.Indent = true;
            settings.IndentChars = _indentChars;
            settings.NewLineOnAttributes = _newLineOnAttributes;
            settings.ReadOnly = true;
            return settings;
        }
    }
 
    public XmlUtf8RawTextWriterIndent(Stream stream, XmlWriterSettings settings)
        : base(stream, settings)
    {
        Init(settings);
    }
 
    public override void WriteDocType(string name, string pubid, string sysid, string subset)
    {
        if (!_mixedContent && _textPos != _bufPos)
        {
            WriteIndent();
        }
        base.WriteDocType(name, pubid, sysid, subset);
    }
 
    public override void WriteStartElement(string prefix, string localName, string ns)
    {
        if (!_mixedContent && _textPos != _bufPos)
        {
            WriteIndent();
        }
        _indentLevel++;
        _mixedContentStack.PushBit(_mixedContent);
        base.WriteStartElement(prefix, localName, ns);
    }
 
    internal override void StartElementContent()
    {
        if (_indentLevel == 1 && _conformanceLevel == ConformanceLevel.Document)
        {
            _mixedContent = false;
        }
        else
        {
            _mixedContent = _mixedContentStack.PeekBit();
        }
        base.StartElementContent();
    }
 
    internal override void OnRootElement(ConformanceLevel currentConformanceLevel)
    {
        _conformanceLevel = currentConformanceLevel;
    }
 
    internal override void WriteEndElement(string prefix, string localName, string ns)
    {
        _indentLevel--;
        if (!_mixedContent && _contentPos != _bufPos && _textPos != _bufPos)
        {
            WriteIndent();
        }
        _mixedContent = _mixedContentStack.PopBit();
        base.WriteEndElement(prefix, localName, ns);
    }
 
    internal override void WriteFullEndElement(string prefix, string localName, string ns)
    {
        _indentLevel--;
        if (!_mixedContent && _contentPos != _bufPos && _textPos != _bufPos)
        {
            WriteIndent();
        }
        _mixedContent = _mixedContentStack.PopBit();
        base.WriteFullEndElement(prefix, localName, ns);
    }
 
    public override void WriteStartAttribute(string prefix, string localName, string ns)
    {
        if (_newLineOnAttributes)
        {
            WriteIndent();
        }
        base.WriteStartAttribute(prefix, localName, ns);
    }
 
    public override void WriteCData(string text)
    {
        _mixedContent = true;
        base.WriteCData(text);
    }
 
    public override void WriteComment(string text)
    {
        if (!_mixedContent && _textPos != _bufPos)
        {
            WriteIndent();
        }
        base.WriteComment(text);
    }
 
    public override void WriteProcessingInstruction(string target, string text)
    {
        if (!_mixedContent && _textPos != _bufPos)
        {
            WriteIndent();
        }
        base.WriteProcessingInstruction(target, text);
    }
 
    public override void WriteEntityRef(string name)
    {
        _mixedContent = true;
        base.WriteEntityRef(name);
    }
 
    public override void WriteCharEntity(char ch)
    {
        _mixedContent = true;
        base.WriteCharEntity(ch);
    }
 
    public override void WriteSurrogateCharEntity(char lowChar, char highChar)
    {
        _mixedContent = true;
        base.WriteSurrogateCharEntity(lowChar, highChar);
    }
 
    public override void WriteWhitespace(string ws)
    {
        _mixedContent = true;
        base.WriteWhitespace(ws);
    }
 
    public override void WriteString(string text)
    {
        _mixedContent = true;
        base.WriteString(text);
    }
 
    public override void WriteChars(char[] buffer, int index, int count)
    {
        _mixedContent = true;
        base.WriteChars(buffer, index, count);
    }
 
    public override void WriteRaw(char[] buffer, int index, int count)
    {
        _mixedContent = true;
        base.WriteRaw(buffer, index, count);
    }
 
    public override void WriteRaw(string data)
    {
        _mixedContent = true;
        base.WriteRaw(data);
    }
 
    public override void WriteBase64(byte[] buffer, int index, int count)
    {
        _mixedContent = true;
        base.WriteBase64(buffer, index, count);
    }
 
    private void Init(XmlWriterSettings settings)
    {
        _indentLevel = 0;
        _indentChars = settings.IndentChars;
        _newLineOnAttributes = settings.NewLineOnAttributes;
        _mixedContentStack = new BitStack();
        if (!_checkCharacters)
        {
            return;
        }
        if (_newLineOnAttributes)
        {
            ValidateContentChars(_indentChars, "IndentChars", allowOnlyWhitespace: true);
            ValidateContentChars(_newLineChars, "NewLineChars", allowOnlyWhitespace: true);
            return;
        }
        ValidateContentChars(_indentChars, "IndentChars", allowOnlyWhitespace: false);
        if (_newLineHandling != 0)
        {
            ValidateContentChars(_newLineChars, "NewLineChars", allowOnlyWhitespace: false);
        }
    }
 
    private void WriteIndent()
    {
        RawText(_newLineChars);
        for (int num = _indentLevel; num > 0; num--)
        {
            RawText(_indentChars);
        }
    }
 
    public override async Task WriteDocTypeAsync(string name, string pubid, string sysid, string subset)
    {
        CheckAsyncCall();
        if (!_mixedContent && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        await base.WriteDocTypeAsync(name, pubid, sysid, subset).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    public override async Task WriteStartElementAsync(string prefix, string localName, string ns)
    {
        CheckAsyncCall();
        if (!_mixedContent && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        _indentLevel++;
        _mixedContentStack.PushBit(_mixedContent);
        await base.WriteStartElementAsync(prefix, localName, ns).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    internal override async Task WriteEndElementAsync(string prefix, string localName, string ns)
    {
        CheckAsyncCall();
        _indentLevel--;
        if (!_mixedContent && _contentPos != _bufPos && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        _mixedContent = _mixedContentStack.PopBit();
        await base.WriteEndElementAsync(prefix, localName, ns).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    internal override async Task WriteFullEndElementAsync(string prefix, string localName, string ns)
    {
        CheckAsyncCall();
        _indentLevel--;
        if (!_mixedContent && _contentPos != _bufPos && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        _mixedContent = _mixedContentStack.PopBit();
        await base.WriteFullEndElementAsync(prefix, localName, ns).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    protected internal override async Task WriteStartAttributeAsync(string prefix, string localName, string ns)
    {
        CheckAsyncCall();
        if (_newLineOnAttributes)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        await base.WriteStartAttributeAsync(prefix, localName, ns).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    public override Task WriteCDataAsync(string text)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteCDataAsync(text);
    }
 
    public override async Task WriteCommentAsync(string text)
    {
        CheckAsyncCall();
        if (!_mixedContent && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        await base.WriteCommentAsync(text).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    public override async Task WriteProcessingInstructionAsync(string target, string text)
    {
        CheckAsyncCall();
        if (!_mixedContent && _textPos != _bufPos)
        {
            await WriteIndentAsync().ConfigureAwait(continueOnCapturedContext: false);
        }
        await base.WriteProcessingInstructionAsync(target, text).ConfigureAwait(continueOnCapturedContext: false);
    }
 
    public override Task WriteEntityRefAsync(string name)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteEntityRefAsync(name);
    }
 
    public override Task WriteCharEntityAsync(char ch)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteCharEntityAsync(ch);
    }
 
    public override Task WriteSurrogateCharEntityAsync(char lowChar, char highChar)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteSurrogateCharEntityAsync(lowChar, highChar);
    }
 
    public override Task WriteWhitespaceAsync(string ws)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteWhitespaceAsync(ws);
    }
 
    public override Task WriteStringAsync(string text)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteStringAsync(text);
    }
 
    public override Task WriteCharsAsync(char[] buffer, int index, int count)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteCharsAsync(buffer, index, count);
    }
 
    public override Task WriteRawAsync(char[] buffer, int index, int count)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteRawAsync(buffer, index, count);
    }
 
    public override Task WriteRawAsync(string data)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteRawAsync(data);
    }
 
    public override Task WriteBase64Async(byte[] buffer, int index, int count)
    {
        CheckAsyncCall();
        _mixedContent = true;
        return base.WriteBase64Async(buffer, index, count);
    }
 
    private async Task WriteIndentAsync()
    {
        CheckAsyncCall();
        await RawTextAsync(_newLineChars).ConfigureAwait(continueOnCapturedContext: false);
        for (int i = _indentLevel; i > 0; i--)
        {
            await RawTextAsync(_indentChars).ConfigureAwait(continueOnCapturedContext: false);
        }
    }
}