public override void StartDocument()
{
state = OfflineEditsXmlLoader.ParseState.ExpectEditsTag;
stanza = null;
stanzaStack = new Stack <XMLUtils.Stanza>();
opCode = null;
cbuf = new StringBuilder();
nextTxId = -1;
}
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>");
}
}
}
public override void StartElement(string uri, string name, string qName, Attributes
atts)
{
switch (state)
{
case OfflineEditsXmlLoader.ParseState.ExpectEditsTag:
{
if (!name.Equals("EDITS"))
{
throw new XMLUtils.InvalidXmlException("you must put " + "<EDITS> at the top of the XML file! "
+ "Got tag " + name + " instead");
}
state = OfflineEditsXmlLoader.ParseState.ExpectVersion;
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectVersion:
{
if (!name.Equals("EDITS_VERSION"))
{
throw new XMLUtils.InvalidXmlException("you must put " + "<EDITS_VERSION> at the top of the XML file! "
+ "Got tag " + name + " instead");
}
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectRecord:
{
if (!name.Equals("RECORD"))
{
throw new XMLUtils.InvalidXmlException("expected a <RECORD> tag");
}
state = OfflineEditsXmlLoader.ParseState.ExpectOpcode;
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectOpcode:
{
if (!name.Equals("OPCODE"))
{
throw new XMLUtils.InvalidXmlException("expected an <OPCODE> tag");
}
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectData:
{
if (!name.Equals("DATA"))
{
throw new XMLUtils.InvalidXmlException("expected a <DATA> tag");
}
stanza = new XMLUtils.Stanza();
state = OfflineEditsXmlLoader.ParseState.HandleData;
break;
}
case OfflineEditsXmlLoader.ParseState.HandleData:
{
XMLUtils.Stanza parent = stanza;
XMLUtils.Stanza child = new XMLUtils.Stanza();
stanzaStack.Push(parent);
stanza = child;
parent.AddChild(name, child);
break;
}
case OfflineEditsXmlLoader.ParseState.ExpectEnd:
{
throw new XMLUtils.InvalidXmlException("not expecting anything after </EDITS>");
}
}
}