public MsnLog Read(string msnHistoryFile)
{
if (string.IsNullOrEmpty(msnHistoryFile))
{
throw new ArgumentNullException("The file name can not be null");
}
if (File.Exists(msnHistoryFile) == false)
{
throw new FileNotFoundException("Can not find file" + msnHistoryFile);
}
var log = default(MsnLog);
var xmlDoc = new XmlDocument();
using (var xmlReader = new XmlTextReader(msnHistoryFile))
{
xmlDoc.Load(xmlReader);
log = new MsnLog()
{
XmlFilePath = new FileInfo(msnHistoryFile).FullName
};
ReadHead(xmlDoc, log);
var rootNode = ReadLogBasicProperty(xmlDoc, log);
ReadMessages(log, rootNode);
}
return(log);
}
private static void ReadMessages(MsnLog log, XmlNode rootNode)
{
var messages = rootNode.SelectNodes("*");
foreach (XmlNode msgNode in messages)
{
log.Messages.Add(MsnMessageFactory.Create(msgNode));
}
}
private static XmlNode ReadLogBasicProperty(XmlDocument xmlDoc, MsnLog log)
{
var logNode = xmlDoc.SelectSingleNode("Log");
log.FirstSessionID = int.Parse(logNode.Attributes["FirstSessionID"].Value);
log.LastSessionID = int.Parse(logNode.Attributes["LastSessionID"].Value);
return(logNode);
}
private static void ReadHead(XmlDocument xmlDoc, MsnLog log)
{
log.Declaration = xmlDoc.FirstChild as XmlDeclaration;
log.Xsl = xmlDoc.FirstChild.NextSibling as XmlProcessingInstruction;
}