using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Xml;
using System.Xml.Schema;
using System.Xml.XPath;
using System.Xml.Serialization;
using System.Reflection;
using System.Diagnostics;
namespace A4G.Utils.Xml
{
public class XmlValidationHelper
{
private ValidationEventHandler _validationEventHandler;
public XmlValidationHelper(string xsdPath, string nameSpace)
: this(new string[] { xsdPath }, new string[] {nameSpace})
{
}
public XmlValidationHelper(string[] xsdPaths, string[] nameSpaces)
{
//ArgumentAsserter.AssertIsNotNull(xsdPaths, "xsdPaths");
//ArgumentAsserter.AssertIsNotNull(nameSpaces, "nameSpaces");
//ArgumentAsserter.AssertIsTrue(xsdPaths.Length > 0, "xsdPaths.Length > 0");
//ArgumentAsserter.AssertAreEqual(xsdPaths.Length, nameSpaces.Length,
// "xsdPaths.Length", "nameSpace.Length");
_validationEventHandler = new ValidationEventHandler(ValidationCallback);
_schemaSet = new XmlSchemaSet();
for (int i = 0; i < xsdPaths.Length; i++)
{
_schemaSet.Add(nameSpaces[i], xsdPaths[i]);
}
}
public XmlValidationHelper(XmlSchemaSet schemaSet)
{
_validationEventHandler = new ValidationEventHandler(ValidationCallback);
_schemaSet = schemaSet;
}
private readonly XmlSchemaSet _schemaSet;
public XmlSchemaSet SchemaSet
{
get
{
return _schemaSet;
}
}
private readonly List _errors = new List();
private List Errors
{
get
{
return _errors;
}
}
public Exception[] GetErrors()
{
return Errors.ToArray();
}
private readonly List _warnings = new List();
private List Warnings
{
get
{
return _warnings;
}
}
public Exception[] GetWarnings()
{
return Warnings.ToArray();
}
public void Validate(string xmlFile)
{
XmlReader xmlReader = new XmlTextReader(xmlFile);
Validate(xmlReader);
xmlReader.Close();
}
public void Validate(byte[] bytes)
{
MemoryStream xmlStream = new MemoryStream(bytes);
try
{
Validate(xmlStream);
}
finally
{
xmlStream.Close();
}
}
public void Validate(Stream xmlStream)
{
XmlReader xmlReader = new XmlTextReader(xmlStream);
try
{
Validate(xmlReader);
}
finally
{
xmlReader.Close();
}
}
public void Validate(XmlReader xmlReader)
{
Errors.Clear();
Warnings.Clear();
XmlReaderSettings settings = new XmlReaderSettings();
settings.ValidationEventHandler += _validationEventHandler;
settings.ValidationType = ValidationType.Schema;
settings.Schemas = SchemaSet;
XmlReader validatingReader = XmlReader.Create(xmlReader, settings);
try
{
while (validatingReader.Read()) ;
}
catch (Exception e)
{
_errors.Add(e);
}
finally
{
validatingReader.Close();
}
#if DEBUG
Debug.WriteLine("Xml Validation Warnings:");
if (Warnings.Count == 0)
{
Debug.WriteLine("- None");
}
foreach (Exception warning in Warnings)
{
XmlSchemaException xmlError = warning as XmlSchemaException;
if (xmlError != null)
{
Debug.WriteLine(string.Format(
"Line {0}, position {1}: {2}",
xmlError.LineNumber,
xmlError.LinePosition,
xmlError.Message));
}
else
{
Debug.WriteLine(warning.ToString());
}
}
Debug.WriteLine("Xml Validation Errors");
if (Errors.Count == 0)
{
Debug.WriteLine("- None");
}
foreach (Exception error in Errors)
{
XmlSchemaException xmlError = error as XmlSchemaException;
if (xmlError != null)
{
Debug.WriteLine(string.Format(
"Line {0}, position {1}: {2}",
xmlError.LineNumber,
xmlError.LinePosition,
xmlError.Message));
}
else
{
Debug.WriteLine(error.ToString());
}
}
#endif
}
private void ValidationCallback(object sender, ValidationEventArgs args)
{
switch (args.Severity)
{
case XmlSeverityType.Warning:
{
_warnings.Add(args.Exception);
break;
}
case XmlSeverityType.Error:
{
_errors.Add(args.Exception);
break;
}
}
}
}
}