void preprocessor_ProcessedStream(object sender, ProcessedStreamEventArgs e)
{
ProcessedStreamEventArgs args = e as ProcessedStreamEventArgs;
Stream processed = args.Processed;
// save the old position of the stream
long oldPosition = processed.Position;
HashAlgorithm sha = new SHA1CryptoServiceProvider();
processed.Position = 0;
byte[] hashBytes = sha.ComputeHash(processed);
StringBuilder sb = new StringBuilder();
for (int i = 0, j = hashBytes.GetLength(0); i < j; ++i)
{
sb.AppendFormat("{0:X02}", hashBytes[i]);
}
this.hash = sb.ToString();
// restore the old position
processed.Position = oldPosition;
}
/// <summary>
/// Fires an event after the file is preprocessed.
/// </summary>
/// <param name="ea">Included file event arguments.</param>
private void OnProcessedStream(ProcessedStreamEventArgs ea)
{
if (null != this.ProcessedStream)
{
this.ProcessedStream(this, ea);
}
}
public XmlDocument Process(string sourceFile, Hashtable variables)
{
Stream processed = new MemoryStream();
XmlDocument sourceDocument = new XmlDocument();
try
{
this.core = new PreprocessorCore(this.extensionsByPrefix, this.Message, sourceFile, variables);
this.core.ResolvedVariableHandler = this.ResolvedVariable;
this.core.CurrentPlatform = this.currentPlatform;
this.currentLineNumberWritten = false;
this.currentLineNumber = new SourceLineNumber(sourceFile);
this.currentFileStack.Clear();
this.currentFileStack.Push(this.core.GetVariableValue(this.GetCurrentSourceLineNumbers(), "sys", "SOURCEFILEDIR"));
// open the source file for processing
using (Stream sourceStream = new FileStream(sourceFile, FileMode.Open, FileAccess.Read, FileShare.Read))
{
// inspect the raw source
InspectorCore inspectorCore = new InspectorCore(this.Message);
foreach (InspectorExtension inspectorExtension in this.inspectorExtensions)
{
inspectorExtension.Core = inspectorCore;
inspectorExtension.InspectSource(sourceStream);
// reset
inspectorExtension.Core = null;
sourceStream.Position = 0;
}
if (inspectorCore.EncounteredError)
{
return null;
}
XmlReader reader = new XmlTextReader(sourceStream);
XmlTextWriter writer = new XmlTextWriter(processed, Encoding.UTF8);
// process the reader into the writer
try
{
foreach (PreprocessorExtension extension in this.extensions)
{
extension.Core = this.core;
extension.InitializePreprocess();
}
this.PreprocessReader(false, reader, writer, 0);
}
catch (XmlException e)
{
this.UpdateInformation(reader, 0);
throw new WixException(WixErrors.InvalidXml(this.GetCurrentSourceLineNumbers(), "source", e.Message));
}
writer.Flush();
}
// fire event with processed stream
ProcessedStreamEventArgs args = new ProcessedStreamEventArgs(sourceFile, processed);
this.OnProcessedStream(args);
// create an XML Document from the post-processed memory stream
XmlTextReader xmlReader = null;
try
{
// create an XmlReader with the path to the original file
// to properly set the BaseURI property of the XmlDocument
processed.Position = 0;
xmlReader = new XmlTextReader(new Uri(Path.GetFullPath(sourceFile)).AbsoluteUri, processed);
sourceDocument.Load(xmlReader);
}
catch (XmlException e)
{
this.UpdateInformation(xmlReader, 0);
throw new WixException(WixErrors.InvalidXml(this.GetCurrentSourceLineNumbers(), "source", e.Message));
}
finally
{
if (null != xmlReader)
{
xmlReader.Close();
}
}
// preprocess the generated XML Document
foreach (PreprocessorExtension extension in this.extensions)
{
extension.PreprocessDocument(sourceDocument);
}
}
finally
{
// finalize the preprocessing
foreach (PreprocessorExtension extension in this.extensions)
{
extension.FinalizePreprocess();
extension.Core = null;
}
}
if (this.core.EncounteredError)
{
return null;
}
else
{
if (null != this.preprocessOut)
{
sourceDocument.Save(this.preprocessOut);
this.preprocessOut.Flush();
}
return sourceDocument;
}
}