/// <summary>
/// Parses XML from a byte buffer,
/// fixing the encoding (Latin-1 to UTF-8) and illegal control character optionally.
/// </summary>
/// <param name="buffer">a byte buffer containing the XMP packet</param>
/// <param name="options">the parsing options</param>
/// <returns>Returns an XML DOM-Document.</returns>
/// <exception cref="XmpException">Thrown when the parsing fails.</exception>
private static XmlDocument ParseXmlFromByteBuffer(ByteBuffer buffer, ParseOptions options)
{
try
{
return(ParseStream(buffer.GetByteStream()));
}
catch (XmpException e)
{
if (e.GetErrorCode() == XmpErrorCode.BadXml || e.GetErrorCode() == XmpErrorCode.BadStream)
{
if (options.AcceptLatin1)
{
buffer = Latin1Converter.Convert(buffer);
}
if (options.FixControlChars)
{
try
{
return(ParseTextReader(new FixAsciiControlsReader(new StreamReader(buffer.GetByteStream(), buffer.GetEncoding()))));
}
catch
{
// can normally not happen as the encoding is provided by a util function
throw new XmpException("Unsupported Encoding", XmpErrorCode.InternalFailure, e);
}
}
return(ParseStream(buffer.GetByteStream()));
}
throw;
}
}
/// <summary>
/// Parses XML from a byte buffer,
/// fixing the encoding (Latin-1 to UTF-8) and illegal control character optionally.
/// To improve the performance on legal files, it is first tried to parse normally,
/// while the character fixing is only done when the first pass fails.
/// </summary>
/// <param name="buffer">a byte buffer containing the XMP packet</param>
/// <param name="options">the parsing options</param>
/// <returns>Returns an XML DOM-Document.</returns>
/// <exception cref="XmpException">Thrown when the parsing fails.</exception>
private static XDocument ParseXmlFromByteBuffer(ByteBuffer buffer, ParseOptions options)
{
try
{
return(ParseStream(buffer.GetByteStream(), options));
}
catch (XmpException e)
{
//if ("DOCTYPE is disallowed".equals(e.getCause().getMessage()))
//{
// throw new XMPException(e.getCause().getMessage(), XMPError.BADXML);
//}
//else
if (e.ErrorCode == XmpErrorCode.BadXml || e.ErrorCode == XmpErrorCode.BadStream)
{
if (options.AcceptLatin1)
{
buffer = Latin1Converter.Convert(buffer);
}
if (options.FixControlChars)
{
try
{
return(ParseTextReader(new FixAsciiControlsReader(new StreamReader(buffer.GetByteStream(), buffer.GetEncoding())), options));
}
catch
{
// can normally not happen as the encoding is provided by a util function
throw new XmpException("Unsupported Encoding", XmpErrorCode.InternalFailure, e);
}
}
return(ParseStream(buffer.GetByteStream(), options));
}
throw;
}
}