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//
// BatchingImpl.cs: Class that implements BatchingAlgorithm from the wiki.
//
// Author:
// Marek Sieradzki (marek.sieradzki@gmail.com)
//
// (C) 2005 Marek Sieradzki
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#if NET_2_0
using System;
using System.IO;
using System.Xml;
namespace Microsoft.Build.BuildEngine {
internal class BatchingImpl {
string inputs;
string outputs;
Project project;
public BatchingImpl (Project project, XmlElement targetElement)
{
if (targetElement == null)
throw new ArgumentNullException ("targetElement");
if (project == null)
throw new ArgumentNullException ("project");
this.project = project;
inputs = targetElement.GetAttribute ("Inputs");
outputs = targetElement.GetAttribute ("Outputs");
}
public bool BuildNeeded ()
{
// FIXME: change this to ITaskItem instead of string
OldExpression inputExpr, outputExpr;
string[] inputFiles, outputFiles;
DateTime oldestInput, youngestOutput;
if (inputs == String.Empty) {
return true;
}
if (outputs == String.Empty) {
return true;
}
inputExpr = new OldExpression (project);
inputExpr.ParseSource (inputs);
outputExpr = new OldExpression (project);
outputExpr.ParseSource (outputs);
inputFiles = (string[]) inputExpr.ConvertTo (typeof (string[]));
outputFiles = (string[]) outputExpr.ConvertTo (typeof (string[]));
if (inputFiles == null) {
return true;
}
if (outputFiles == null) {
return true;
}
if (inputFiles.Length == 0) {
return true;
}
if (outputFiles.Length == 0) {
return true;
}
if (File.Exists (inputFiles [0])) {
oldestInput = File.GetLastWriteTime (inputFiles [0]);
} else {
return true;
}
if (File.Exists (outputFiles [0])) {
youngestOutput = File.GetLastWriteTime (outputFiles [0]);
} else {
return true;
}
foreach (string file in inputFiles) {
if (file.Trim () == String.Empty)
continue;
if (File.Exists (file.Trim ())) {
if (File.GetLastWriteTime (file.Trim ()) > oldestInput)
oldestInput = File.GetLastWriteTime (file.Trim ());
} else {
return true;
}
}
foreach (string file in outputFiles) {
if (file.Trim () == String.Empty)
continue;
if (File.Exists (file.Trim ())) {
if (File.GetLastWriteTime (file.Trim ()) < youngestOutput)
youngestOutput = File.GetLastWriteTime (file.Trim ());
} else {
return true;
}
}
if (oldestInput > youngestOutput) {
return true;
}
else {
return false;
}
}
// FIXME: should do everything from task batching specification, not just run task once
public bool BatchBuildTask (BuildTask buildTask)
{
if (buildTask.Condition == String.Empty)
return buildTask.Execute ();
ConditionExpression ce = ConditionParser.ParseCondition (buildTask.Condition);
if (ce.BoolEvaluate (project))
return buildTask.Execute ();
else
// FIXME: skipped, it should be logged
return true;
}
}
}
#endif
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