2 // BatchingImpl.cs: Class that implements BatchingAlgorithm from the wiki.
5 // Marek Sieradzki (marek.sieradzki@gmail.com)
7 // (C) 2005 Marek Sieradzki
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
34 namespace Microsoft.Build.BuildEngine {
35 internal class BatchingImpl {
41 public BatchingImpl (Project project, XmlElement targetElement)
43 if (targetElement == null)
44 throw new ArgumentNullException ("targetElement");
46 throw new ArgumentNullException ("project");
48 this.project = project;
50 inputs = targetElement.GetAttribute ("Inputs");
51 outputs = targetElement.GetAttribute ("Outputs");
54 public bool BuildNeeded ()
56 // FIXME: change this to ITaskItem instead of string
58 Expression inputExpr, outputExpr;
59 string[] inputFiles, outputFiles;
60 DateTime oldestInput, youngestOutput;
62 if (inputs == String.Empty) {
65 if (outputs == String.Empty) {
69 inputExpr = new Expression (project, inputs);
70 outputExpr = new Expression (project, outputs);
72 inputFiles = (string[]) inputExpr.ToArray (typeof (string[]));
73 outputFiles = (string[]) outputExpr.ToArray (typeof (string[]));
75 if (inputFiles == null) {
78 if (outputFiles == null) {
81 if (inputFiles.Length == 0) {
84 if (outputFiles.Length == 0) {
88 if (File.Exists (inputFiles [0])) {
89 oldestInput = File.GetLastWriteTime (inputFiles [0]);
93 if (File.Exists (outputFiles [0])) {
94 youngestOutput = File.GetLastWriteTime (outputFiles [0]);
99 foreach (string file in inputFiles) {
100 if (file.Trim () == String.Empty)
103 if (File.Exists (file.Trim ())) {
104 if (File.GetLastWriteTime (file.Trim ()) > oldestInput)
105 oldestInput = File.GetLastWriteTime (file.Trim ());
110 foreach (string file in outputFiles) {
111 if (file.Trim () == String.Empty)
114 if (File.Exists (file.Trim ())) {
115 if (File.GetLastWriteTime (file.Trim ()) < youngestOutput)
116 youngestOutput = File.GetLastWriteTime (file.Trim ());
122 if (oldestInput > youngestOutput) {
130 public bool BatchTaskElement (TaskElement taskElement)
132 return taskElement.Execute ();