分类：
2008-10-13 16:09:06
0 HEAD 1 SOUR AcmeGen 2 VERS 5.0 2 NAME Acme Genealogy 1 DATE 13 February 2004 2 TIME 03:50:51 1 GEDC 2 VERS 5.5 2 FORM LINEAGE-LINKED 1 CHAR ANSEL 1 SUBM @SUB01@ 1 SUBN @N01@ 0 @SUB01@ SUBM 1 NAME Aaron Skonnard 1 ADDR 456 Main 2 CONT Salt Lake City, Utah 84150 0 @N01@ SUBN 1 DESC 1 1 ORDI N 0 @I100294220729@ INDI 1 NAME Bernt Olaf /Skonnord/ 1 SEX M 1 BIRT 2 DATE 14 JUN 1860 2 PLAC Snertingdal, Oppland, Norway 1 FAMC @F306458249@ 1 SOUR @S01@ ...
...
// standard interface for all XML nodes that we'll be
// creating from the GEDCOM 5.5 file
public interface IGedcomNode
{
string Name {get;}
string Value {get;}
int LineNumber {get;}
XmlNodeType NodeType {get;}
}
public class GedcomAttribute : IGedcomNode
{
... // represents a value from the GEDCOM file that will
// now become an XML attribute node
}
public class GedcomElement : IGedcomNode
{
... // represents a tag from the GEDCOM file that will
// now become an XML element node
}
public class GedcomEndElement : IGedcomNode
{
... // a node that marks the end of an XML element node
}
public class GedcomText : IGedcomNode
{
... // represents a value from the GEDCOM file that will
// now become an XML text node
}
public class GedcomLine
{
... // represents a GEDCOM 5.5 line that has been parsed
// into an array of IGedcomNode objects (see above)
}
public class GedcomReader : XmlReader
{
...
private GedcomLine ParseGedcomLine(string lineText)
{
string xref_id="", tag="", pointer="", linevalue="";
int nextPart = 0;
// split GEDCOM line into parts
string[] lineParts = lineText.Split(' ');
// first part is always the line number
int lineNumber = int.Parse(lineParts[nextPart++]);
// check to see if line has an ID and get tag name
if (lineParts[nextPart].StartsWith("@"))
{
xref_id = lineParts[nextPart++].Replace("@", "");
tag = lineParts[nextPart++];
}
else
tag = lineParts[nextPart++];
// check to see if value is a pointer or text
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));
return line;
}
public override bool Read()
{
try
{
switch (readState)
{
case ReadState.Initial:
{
nodeStack.Push(new GedcomElement("GEDCOM", -1));
readState = ReadState.Interactive;
return true;
}
case ReadState.Interactive:
{
// deal with attributes and end element nodes
...
if (currentLineNodes != null && !currentLineNodes.EOF)
{
currentLineNodes.MoveNext();
nodeStack.Push(currentLineNodes.Current);
}
else
{
// need to parse a new GEDCOM line
currentLineText = fileReader.ReadLine();
if (currentLineText == null)
{
readState = ReadState.EndOfFile;
return false;
}
currentLineNodes = ParseGedcomLine(currentLineText);
...
nodeStack.Push(currentLineNodes.Current);
}
return true;
}
default:
return false;
}
}
catch(Exception e)
{
readState = ReadState.Error;
throw e;
}
}
... // remaining methods omitted
}
public class GedcomReader : XmlReader
{
... // remaining methods omitted
public override string LocalName
{
get
{
if (readState != ReadState.Interactive)
return String.Empty;
IGedcomNode node = nodeStack.Peek() as IGedcomNode;
return node.Name;
}
}
public override string Name
{
get
{
if (readState != ReadState.Interactive)
return String.Empty;
IGedcomNode node = nodeStack.Peek() as IGedcomNode;
return node.Name;
}
}
public override XmlNodeType NodeType
{
get
{
if (readState != ReadState.Interactive)
return XmlNodeType.None;
IGedcomNode node = nodeStack.Peek() as IGedcomNode;
return node.NodeType;
}
}
public override string Value
{
get
{
IGedcomNode node = nodeStack.Peek() as IGedcomNode;
return node.Value;
}
}
}