public override bool Read()
{
try
{
switch (readState)
{
case ReadState.Initial:
{
nodeStack.Push(new GedcomElement("GEDCOM", -1));
readState = ReadState.Interactive;
return(true);
}
case ReadState.Interactive:
{
if (GetCurrentNode() is GedcomElement)
{
GedcomElement ge = GetCurrentNode() as GedcomElement;
if (ge != null && ge.IsAttribute || ge.IsText)
{
ge.MoveToElement();
}
}
if (GetCurrentNode().NodeType == XmlNodeType.EndElement)
{
// pop until you hit an element node
while (((IGedcomNode)nodeStack.Pop()).NodeType != XmlNodeType.Element)
{
;
}
int curLineNumber = GetCurrentLineNumber();
if (currentLineNodes.LineNumber <= curLineNumber)
{
// need to close previous element
nodeStack.Push(new GedcomEndElement(curLineNumber));
}
else
{
// just push new elements, they're children
nodeStack.Push(currentLineNodes.Current);
}
}
else if (currentLineNodes != null && !currentLineNodes.EOF)
{
currentLineNodes.MoveNext();
nodeStack.Push(currentLineNodes.Current);
}
else
{
// need to parse a new line
currentLineText = fileReader.ReadLine();
// detect EOF
if (currentLineText == null)
{
readState = ReadState.EndOfFile;
return(false);
}
// parse text into logical nodes
currentLineNodes = ParseGedcomLine(currentLineText);
// see if we need to insert end element
int curLineNumber = GetCurrentLineNumber();
if (currentLineNodes.LineNumber <= curLineNumber)
{
// need to close previous element
nodeStack.Push(new GedcomEndElement(curLineNumber));
}
else
{
// just push new elements, they're children
nodeStack.Push(currentLineNodes.Current);
}
}
return(true);
}
default:
return(false);
}
}
catch (Exception e)
{
readState = ReadState.Error;
throw e;
}
}
public override bool Read()
{
try
{
switch (readState)
{
case ReadState.Initial:
{
nodeStack.Push(new GedcomElement("GEDCOM", -1));
readState = ReadState.Interactive;
return true;
}
case ReadState.Interactive:
{
if (GetCurrentNode() is GedcomElement)
{
GedcomElement ge = GetCurrentNode() as GedcomElement;
if (ge != null && ge.IsAttribute || ge.IsText)
ge.MoveToElement();
}
if (GetCurrentNode().NodeType == XmlNodeType.EndElement)
{
// pop until you hit an element node
while (((IGedcomNode)nodeStack.Pop()).NodeType != XmlNodeType.Element) ;
int curLineNumber = GetCurrentLineNumber();
if (currentLineNodes.LineNumber <= curLineNumber)
// need to close previous element
nodeStack.Push(new GedcomEndElement(curLineNumber));
else
// just push new elements, they're children
nodeStack.Push(currentLineNodes.Current);
}
else if (currentLineNodes != null && !currentLineNodes.EOF)
{
currentLineNodes.MoveNext();
nodeStack.Push(currentLineNodes.Current);
}
else
{
// need to parse a new line
currentLineText = fileReader.ReadLine();
// detect EOF
if (currentLineText == null)
{
readState = ReadState.EndOfFile;
return false;
}
// parse text into logical nodes
currentLineNodes = ParseGedcomLine(currentLineText);
// see if we need to insert end element
int curLineNumber = GetCurrentLineNumber();
if (currentLineNodes.LineNumber <= curLineNumber)
// need to close previous element
nodeStack.Push(new GedcomEndElement(curLineNumber));
else
// just push new elements, they're children
nodeStack.Push(currentLineNodes.Current);
}
return true;
}
default:
return false;
}
}
catch (Exception e)
{
readState = ReadState.Error;
throw e;
}
}
private GedcomLine ParseGedcomLine(string lineText)
{
string xref_id = "", tag = "", pointer = "", linevalue = "";
string[] lineParts = lineText.Split(' ');
int nextPart = 0;
if (lineParts.Length < 2)
{
throw new Exception("invalid GEDCOM line");
}
// first part is always the line number
int lineNumber = int.Parse(lineParts[nextPart++]);
if (lineParts[nextPart].StartsWith("@"))
{
if (lineParts.Length < 3)
{
throw new Exception("invalid GEDCOM line");
}
// this is an xref_id, next part is the tag
xref_id = lineParts[nextPart++].Replace("@", "");
tag = lineParts[nextPart++];
}
else
{
// no xref_id, first part is tag
tag = lineParts[nextPart++];
}
if (lineParts.Length > nextPart)
{
if (lineParts[nextPart].StartsWith("@"))
{
pointer = lineParts[nextPart++].Replace("@", "");
}
}
if (lineParts.Length > nextPart)
{
linevalue = GetRemainingValue(lineParts, nextPart);
}
GedcomLine line = new GedcomLine(lineNumber);
GedcomElement e = new GedcomElement(tag, lineNumber);
if (xref_id != "")
{
e.AddAttribute(new GedcomAttribute("id", xref_id, lineNumber));
}
if (pointer != "")
{
e.AddAttribute(new GedcomAttribute("idref", pointer, lineNumber));
}
line.Add(e);
if (linevalue != "")
{
e.AddAttribute(new GedcomAttribute("value", linevalue, lineNumber));
//GedcomText t = new GedcomText(linevalue, lineNumber);
//line.Add(t);
}
return(line);
}
private GedcomLine ParseGedcomLine(string lineText)
{
string xref_id = "", tag = "", pointer = "", linevalue = "";
string[] lineParts = lineText.Split(' ');
int nextPart = 0;
if (lineParts.Length < 2)
throw new Exception("invalid GEDCOM line");
// first part is always the line number
int lineNumber = int.Parse(lineParts[nextPart++]);
if (lineParts[nextPart].StartsWith("@"))
{
if (lineParts.Length < 3)
throw new Exception("invalid GEDCOM line");
// this is an xref_id, next part is the tag
xref_id = lineParts[nextPart++].Replace("@", "");
tag = lineParts[nextPart++];
}
else
// no xref_id, first part is tag
tag = lineParts[nextPart++];
if (lineParts.Length > nextPart)
{
if (lineParts[nextPart].StartsWith("@"))
pointer = lineParts[nextPart++].Replace("@", "");
}
if (lineParts.Length > nextPart)
linevalue = GetRemainingValue(lineParts, nextPart);
GedcomLine line = new GedcomLine(lineNumber);
GedcomElement e = new GedcomElement(tag, lineNumber);
if (xref_id != "")
e.AddAttribute(new GedcomAttribute("id", xref_id, lineNumber));
if (pointer != "")
e.AddAttribute(new GedcomAttribute("idref", pointer, lineNumber));
line.Add(e);
if (linevalue != "")
{
e.AddAttribute(new GedcomAttribute("value", linevalue, lineNumber));
//GedcomText t = new GedcomText(linevalue, lineNumber);
//line.Add(t);
}
return line;
}
