/// <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 {
XmlDocument doc = new XmlDocument();
doc.Load(buffer.ByteStream);
return(doc);
}
catch (XmpException e) {
XmlDocument doc = new XmlDocument();
if (e.ErrorCode == XmpError.BADXML || e.ErrorCode == XmpError.BADSTREAM)
{
if (options.AcceptLatin1)
{
buffer = Latin1Converter.Convert(buffer);
}
if (options.FixControlChars)
{
try {
string encoding = buffer.Encoding;
StreamReader fixReader = new FixAsciiControlsReader(buffer.ByteStream, encoding);
doc.Load(fixReader);
return(doc);
}
catch (Exception) {
// can normally not happen as the encoding is provided by a util function
throw new XmpException("Unsupported Encoding", XmpError.INTERNALFAILURE, e);
}
}
doc.Load(buffer.ByteStream);
return(doc);
}
throw e;
}
}
/// <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 {
XmlDocument doc = new XmlDocument();
doc.Load(GetSecureXmlReader(buffer.ByteStream));
return(doc);
} catch (XmlException e) {
XmlDocument doc = new XmlDocument();
if (options.AcceptLatin1)
{
buffer = Latin1Converter.Convert(buffer);
}
if (options.FixControlChars)
{
try {
StreamReader streamReader = new StreamReader(buffer.ByteStream, Encoding.GetEncoding(buffer.Encoding));
FixAsciiControlsReader fixReader = new FixAsciiControlsReader(streamReader);
doc.Load(GetSecureXmlReader(fixReader));
return(doc);
} catch (Exception) {
// can normally not happen as the encoding is provided by a util function
throw new XmpException("Unsupported Encoding", XmpError.INTERNALFAILURE, e);
}
}
doc.Load(buffer.ByteStream);
return(doc);
}
}