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// NAnt - A .NET build tool
// Copyright (C) 2001 Gerry Shaw
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Gerry Shaw (gerry_shaw@yahoo.com)
namespace SourceForge.NAnt {
using System;
using System.Collections.Specialized;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Xml;
public abstract class ExternalProgramBase : Task {
[TaskAttribute("verbose")]
[BooleanValidator()]
string _verbose = Boolean.FalseString;
public abstract string ProgramFileName { get; }
public abstract string ProgramArguments { get; }
public virtual string BaseDirectory {
get {
if (Project != null) {
return Project.BaseDirectory;
} else {
return null;
}
}
}
public virtual int TimeOut {
get { return Int32.MaxValue; }
}
public virtual bool FailOnError {
get { return true; }
}
public bool Verbose {
get {
return (Project.Verbose || Convert.ToBoolean(_verbose));
}
}
StringCollection _args = new StringCollection();
protected override void InitializeTask(XmlNode taskNode) {
// initialize the _args collection
foreach (XmlNode optionNode in taskNode.SelectNodes("arg")) {
// TODO: decide if we should enforce arg elements not being able
// to accept a file and value attribute on the same element.
// Ideally this would be down via schema and since it doesn't
// really hurt for now I'll leave it in.
XmlNode valueNode = optionNode.SelectSingleNode("@value");
if (valueNode != null) {
_args.Add(Project.ExpandText(valueNode.Value));
}
XmlNode fileNode = optionNode.SelectSingleNode("@file");
if (fileNode != null) {
_args.Add(Project.GetFullPath(Project.ExpandText(fileNode.Value)));
}
}
}
public string GetCommandLine() {
// append any nested <arg> arguments to command line
StringBuilder arguments = new StringBuilder(ProgramArguments);
foreach (string arg in _args) {
arguments = arguments.Append(' ');
arguments = arguments.Append(arg);
}
return arguments.ToString();
}
protected override void ExecuteTask() {
try {
// create process to launch compiler (redirect standard output to temp buffer)
Process process = new Process();
process.StartInfo.FileName = ProgramFileName;
process.StartInfo.Arguments = GetCommandLine();
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
process.StartInfo.WorkingDirectory = BaseDirectory;
if (Verbose) {
Log.WriteLine(LogPrefix + "{0}>{1} {2}", process.StartInfo.WorkingDirectory, process.StartInfo.FileName, process.StartInfo.Arguments);
}
process.Start();
// display standard output
StreamReader reader = process.StandardOutput;
string output = reader.ReadToEnd();
if (output.Length > 0) {
int indentLevel = Log.IndentLevel;
Log.IndentLevel = 0;
Log.WriteLine(output);
Log.IndentLevel = indentLevel;
}
// wait for program to exit
process.WaitForExit(TimeOut);
if (FailOnError && process.ExitCode != 0) {
throw new BuildException("Program error, see build log for details.");
}
} catch (Exception e) {
throw new BuildException(e.Message, Location, e);
}
}
}
}
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