private static string ReadXpathFromFile(ConsoleArguments args, string documentName)
{
var doc = new XmlDocument();
doc.Load(Path.Combine(args.XmlsFolderPath, documentName));
XmlNode?root = doc.DocumentElement;
if (root == null)
{
throw new WrongDocumentException("The document contains no root element");
}
var xmlNamespaceManager = new XmlNamespaceManager(doc.NameTable);
xmlNamespaceManager.AddNamespace("ns", "http://www.tempuri.org/XML");
var node = root.SelectSingleNode(args.XpathExpression, xmlNamespaceManager);
if (node == null)
{
throw new WrongDocumentException($"The path: {args.XpathExpression} doesn't exist");
}
return(node.InnerXml);
}
private static void AddToCsv(ConsoleArguments args, string fileName, string value)
{
using var writer = new StreamWriter(args.OutputFilePath);
using var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture);
csvWriter.WriteRecord(new CsvModel {
FileName = fileName, Value = value
});
csvWriter.NextRecord();
writer.Flush();
}
private static void ReadXpath(ConsoleArguments args)
{
if (!File.Exists(args.OutputFilePath))
{
File.Create(args.OutputFilePath);
}
if (!Directory.Exists(args.XmlsFolderPath))
{
throw new WarningException("The path to the output folder doesn't exist");
}
var listOfActions = new List <Action>();
var documentsNames = Directory.GetFiles(args.XmlsFolderPath);
if (documentsNames.Any(documentName => Path.GetExtension(documentName) != ".xml"))
{
throw new WrongPathException("The path contains a file without XML extension");
}
using (var writer = new StreamWriter(args.OutputFilePath))
{
using (var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
csvWriter.WriteHeader(typeof(CsvModel));
csvWriter.NextRecord();
writer.Flush();
}
}
foreach (var documentName in documentsNames)
{
listOfActions.Add(() =>
{
var result = ReadXpathFromFile(args, documentName);
AddToCsv(args, Path.GetFileName(documentName), result);
});
}
var options = new ParallelOptions {
MaxDegreeOfParallelism = args.NumberOfThreads
};
Parallel.Invoke(options, listOfActions.ToArray());
}