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//------------------------------------------------------------------------------
// <copyright file="PreservationFileReader.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Compilation {
using System;
using System.IO;
using System.Collections;
using System.Globalization;
using System.Text;
using System.Xml;
using System.Web.Util;
using System.Web.UI;
internal class PreservationFileWriter {
private XmlTextWriter _writer;
private bool _precompilationMode;
internal const string fileDependenciesTagName = "filedeps";
internal const string fileDependencyTagName = "filedep";
internal const string buildResultDependenciesTagName = "builddeps";
internal const string buildResultDependencyTagName = "builddep";
internal PreservationFileWriter(bool precompilationMode) {
_precompilationMode = precompilationMode;
}
internal void SaveBuildResultToFile(string preservationFile,
BuildResult result, long hashCode) {
_writer = new XmlTextWriter(preservationFile, Encoding.UTF8);
try {
_writer.Formatting = Formatting.Indented;
_writer.Indentation = 4;
_writer.WriteStartDocument();
// <preserve assem="assemblyFile">
_writer.WriteStartElement("preserve");
// Save the type of BuildResult we're dealing with
Debug.Assert(result.GetCode() != BuildResultTypeCode.Invalid);
SetAttribute("resultType", ((int)result.GetCode()).ToString(CultureInfo.InvariantCulture));
// Save the virtual path for this BuildResult
if (result.VirtualPath != null)
SetAttribute("virtualPath", result.VirtualPath.VirtualPathString);
// Get the hash code of the BuildResult
long hash = result.ComputeHashCode(hashCode);
// The hash should always be valid if we got here.
Debug.Assert(hash != 0, "hash != 0");
// Save it to the preservation file
SetAttribute("hash", hash.ToString("x", CultureInfo.InvariantCulture));
// Can be null if that's what the VirtualPathProvider returns
string fileHash = result.VirtualPathDependenciesHash;
if (fileHash != null)
SetAttribute("filehash", fileHash);
result.SetPreservedAttributes(this);
SaveDependencies(result.VirtualPathDependencies);
// </preserve>
_writer.WriteEndElement();
_writer.WriteEndDocument();
_writer.Close();
}
catch {
// If an exception occurs during the writing of the xml file, clean it up
_writer.Close();
File.Delete(preservationFile);
throw;
}
}
private void SaveDependencies(ICollection dependencies) {
// Write all the dependencies
if (dependencies != null) {
// <filedeps>
_writer.WriteStartElement(fileDependenciesTagName);
foreach (string vpath in dependencies) {
// e.g. <filedep name="/testapp/foo.aspx" />
_writer.WriteStartElement(fileDependencyTagName);
_writer.WriteAttributeString("name", vpath);
_writer.WriteEndElement();
}
// </filedeps>
_writer.WriteEndElement();
}
}
internal void SetAttribute(string name, string value) {
_writer.WriteAttributeString(name, value);
}
}
}
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