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using System;
using System.IO;
using System.Text;
using System.Xml.Schema;
using System.Collections;
using System.Diagnostics;
using System.Threading.Tasks;
namespace System.Xml {
//
// XmlCharCheckingWriter
//
internal partial class XmlCharCheckingWriter : XmlWrappingWriter {
public override Task WriteDocTypeAsync( string name, string pubid, string sysid, string subset ) {
if ( checkNames ) {
ValidateQName( name );
}
if ( checkValues ) {
if ( pubid != null ) {
int i;
if ( ( i = xmlCharType.IsPublicId( pubid ) ) >= 0 ) {
throw XmlConvert.CreateInvalidCharException( pubid, i );
}
}
if ( sysid != null ) {
CheckCharacters( sysid );
}
if ( subset != null ) {
CheckCharacters( subset );
}
}
if ( replaceNewLines ) {
sysid = ReplaceNewLines( sysid );
pubid = ReplaceNewLines( pubid );
subset = ReplaceNewLines( subset );
}
return writer.WriteDocTypeAsync(name, pubid, sysid, subset);
}
public override Task WriteStartElementAsync( string prefix, string localName, string ns ) {
if ( checkNames ) {
if ( localName == null || localName.Length == 0 ) {
throw new ArgumentException( Res.GetString( Res.Xml_EmptyLocalName ) );
}
ValidateNCName( localName );
if ( prefix != null && prefix.Length > 0 ) {
ValidateNCName( prefix );
}
}
return writer.WriteStartElementAsync(prefix, localName, ns);
}
protected internal override Task WriteStartAttributeAsync( string prefix, string localName, string ns ) {
if ( checkNames ) {
if ( localName == null || localName.Length == 0 ) {
throw new ArgumentException( Res.GetString( Res.Xml_EmptyLocalName ) );
}
ValidateNCName( localName );
if ( prefix != null && prefix.Length > 0 ) {
ValidateNCName( prefix );
}
}
return writer.WriteStartAttributeAsync(prefix, localName, ns);
}
public override async Task WriteCDataAsync( string text ) {
if ( text != null ) {
if ( checkValues ) {
CheckCharacters( text );
}
if ( replaceNewLines ) {
text = ReplaceNewLines( text );
}
int i;
while ( ( i = text.IndexOf( "]]>", StringComparison.Ordinal ) ) >= 0 ) {
await writer.WriteCDataAsync( text.Substring( 0, i + 2 ) ).ConfigureAwait(false);
text = text.Substring( i + 2 );
}
}
await writer.WriteCDataAsync( text ).ConfigureAwait(false);
}
public override Task WriteCommentAsync( string text ) {
if ( text != null ) {
if ( checkValues ) {
CheckCharacters( text );
text = InterleaveInvalidChars( text, '-', '-' );
}
if ( replaceNewLines ) {
text = ReplaceNewLines( text );
}
}
return writer.WriteCommentAsync( text );
}
public override Task WriteProcessingInstructionAsync( string name, string text ) {
if ( checkNames ) {
ValidateNCName( name );
}
if ( text != null ) {
if ( checkValues ) {
CheckCharacters( text );
text = InterleaveInvalidChars( text, '?', '>' );
}
if ( replaceNewLines ) {
text = ReplaceNewLines( text );
}
}
return writer.WriteProcessingInstructionAsync(name, text);
}
public override Task WriteEntityRefAsync( string name ) {
if ( checkNames ) {
ValidateQName( name );
}
return writer.WriteEntityRefAsync(name);
}
public override Task WriteWhitespaceAsync( string ws ) {
if ( ws == null ) {
ws = string.Empty;
}
// "checkNames" is intentional here; if false, the whitespaces are checked in XmlWellformedWriter
if ( checkNames ) {
int i;
if ( ( i = xmlCharType.IsOnlyWhitespaceWithPos( ws ) ) != -1 ) {
throw new ArgumentException( Res.GetString( Res.Xml_InvalidWhitespaceCharacter, XmlException.BuildCharExceptionArgs( ws, i ) ) );
}
}
if ( replaceNewLines ) {
ws = ReplaceNewLines( ws );
}
return writer.WriteWhitespaceAsync(ws);
}
public override Task WriteStringAsync( string text ) {
if ( text != null ) {
if ( checkValues ) {
CheckCharacters( text );
}
if ( replaceNewLines && WriteState != WriteState.Attribute ) {
text = ReplaceNewLines( text );
}
}
return writer.WriteStringAsync(text);
}
public override Task WriteSurrogateCharEntityAsync( char lowChar, char highChar ) {
return writer.WriteSurrogateCharEntityAsync(lowChar, highChar);
}
public override Task WriteCharsAsync( char[] buffer, int index, int count ) {
if (buffer == null) {
throw new ArgumentNullException("buffer");
}
if (index < 0) {
throw new ArgumentOutOfRangeException("index");
}
if (count < 0) {
throw new ArgumentOutOfRangeException("count");
}
if (count > buffer.Length - index) {
throw new ArgumentOutOfRangeException("count");
}
if (checkValues) {
CheckCharacters( buffer, index, count );
}
if ( replaceNewLines && WriteState != WriteState.Attribute ) {
string text = ReplaceNewLines( buffer, index, count );
if ( text != null ) {
return WriteStringAsync(text);
}
}
return writer.WriteCharsAsync( buffer, index, count );
}
public override Task WriteNmTokenAsync( string name ) {
if ( checkNames ) {
if ( name == null || name.Length == 0 ) {
throw new ArgumentException( Res.GetString( Res.Xml_EmptyName ) );
}
XmlConvert.VerifyNMTOKEN( name );
}
return writer.WriteNmTokenAsync(name);
}
public override Task WriteNameAsync( string name ) {
if ( checkNames ) {
XmlConvert.VerifyQName( name, ExceptionType.XmlException );
}
return writer.WriteNameAsync(name);
}
public override Task WriteQualifiedNameAsync( string localName, string ns ) {
if ( checkNames ) {
ValidateNCName( localName );
}
return writer.WriteQualifiedNameAsync(localName, ns);
}
}
}
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