/// <summary>Loads edits file, uses visitor to process all elements</summary>
/// <exception cref="System.IO.IOException"/>
public override void LoadEdits()
{
try
{
visitor.Start(inputStream.GetVersion(true));
while (true)
{
try
{
FSEditLogOp op = inputStream.ReadOp();
if (op == null)
{
break;
}
if (fixTxIds)
{
if (nextTxId <= 0)
{
nextTxId = op.GetTransactionId();
if (nextTxId <= 0)
{
nextTxId = 1;
}
}
op.SetTransactionId(nextTxId);
nextTxId++;
}
visitor.VisitOp(op);
}
catch (IOException e)
{
if (!recoveryMode)
{
// Tell the visitor to clean up, then re-throw the exception
Log.Error("Got IOException at position " + inputStream.GetPosition());
visitor.Close(e);
throw;
}
Log.Error("Got IOException while reading stream! Resyncing.", e);
inputStream.Resync();
}
catch (RuntimeException e)
{
if (!recoveryMode)
{
// Tell the visitor to clean up, then re-throw the exception
Log.Error("Got RuntimeException at position " + inputStream.GetPosition());
visitor.Close(e);
throw;
}
Log.Error("Got RuntimeException while reading stream! Resyncing.", e);
inputStream.Resync();
}
}
visitor.Close(null);
}
finally
{
IOUtils.Cleanup(Log, inputStream);
}
}
public override void EndElement(string uri, string name, string qName)
{
string str = XMLUtils.UnmangleXmlString(cbuf.ToString(), false).Trim();
cbuf = new StringBuilder();
switch (state)
{
case OfflineEditsXmlLoader.ParseState.ExpectEditsTag:
{
throw new XMLUtils.InvalidXmlException("expected <EDITS/>");
}
case OfflineEditsXmlLoader.ParseState.ExpectVersion:
{
if (!name.Equals("EDITS_VERSION"))
{
throw new XMLUtils.InvalidXmlException("expected </EDITS_VERSION>");
}
try
{
int version = System.Convert.ToInt32(str);
visitor.Start(version);
}
catch (IOException e)
{
// Can't throw IOException from a SAX method, sigh.
throw new RuntimeException(e);
}
state = OfflineEditsXmlLoader.ParseState.ExpectRecord;
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectRecord:
{
if (name.Equals("EDITS"))
{
state = OfflineEditsXmlLoader.ParseState.ExpectEnd;
}
else
{
if (!name.Equals("RECORD"))
{
throw new XMLUtils.InvalidXmlException("expected </EDITS> or </RECORD>");
}
}
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectOpcode:
{
if (!name.Equals("OPCODE"))
{
throw new XMLUtils.InvalidXmlException("expected </OPCODE>");
}
opCode = FSEditLogOpCodes.ValueOf(str);
state = OfflineEditsXmlLoader.ParseState.ExpectData;
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectData:
{
throw new XMLUtils.InvalidXmlException("expected <DATA/>");
}
case OfflineEditsXmlLoader.ParseState.HandleData:
{
stanza.SetValue(str);
if (stanzaStack.Empty())
{
if (!name.Equals("DATA"))
{
throw new XMLUtils.InvalidXmlException("expected </DATA>");
}
state = OfflineEditsXmlLoader.ParseState.ExpectRecord;
FSEditLogOp op = opCache.Get(opCode);
opCode = null;
try
{
op.DecodeXml(stanza);
stanza = null;
}
finally
{
if (stanza != null)
{
System.Console.Error.WriteLine("fromXml error decoding opcode " + opCode + "\n" +
stanza.ToString());
stanza = null;
}
}
if (fixTxIds)
{
if (nextTxId <= 0)
{
nextTxId = op.GetTransactionId();
if (nextTxId <= 0)
{
nextTxId = 1;
}
}
op.SetTransactionId(nextTxId);
nextTxId++;
}
try
{
visitor.VisitOp(op);
}
catch (IOException e)
{
// Can't throw IOException from a SAX method, sigh.
throw new RuntimeException(e);
}
state = OfflineEditsXmlLoader.ParseState.ExpectRecord;
}
else
{
stanza = stanzaStack.Pop();
}
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectEnd:
{
throw new XMLUtils.InvalidXmlException("not expecting anything after </EDITS>");
}
}
}
