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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)
// TODO: move this into the task documentation (once we figure out how tasks
// should be documented - xml??
/*
verbose: Show name of each deleted file ("true"/"false"). Default is "false"
when omitted.
quiet: If the file does not exist, do not display a diagnostic message or
modify the exit status to reflect an error (unless Ant has been invoked with
the -verbose or -debug switches). This means that if a file or directory cannot
be deleted, then no error is reported. This setting emulates the -f option to
the Unix "rm" command. ("true"/"false"). Default is "false" meaning things are
"noisy". Setting this to true, implies setting failonerror to false.
failonerror: This flag (which is only of relevance if 'quiet' is false),
controls whether an error -such as a failure to delete a file- stops the build
task, or is merely reported to the screen. The default is "true"
*/
namespace SourceForge.NAnt {
using System;
using System.IO;
[TaskName("delete")]
public class DeleteTask : Task {
[TaskAttribute("file")]
string _file = null;
[TaskAttribute("dir")]
string _dir = null;
[TaskAttribute("verbose")]
[BooleanValidator()]
string _verbose = Boolean.FalseString;
[TaskAttribute("failonerror")]
[BooleanValidator()]
string _failOnError = Boolean.TrueString;
/// <summary>If true then delete empty directories when using filesets.</summary>
[TaskAttribute("includeEmptyDirs")]
[BooleanValidator()]
string _includeEmptyDirs = Boolean.FalseString;
[TaskFileSet("fileset")]
FileSet _fileset = new FileSet(false);
public string FileName { get { return _file; } }
public string DirectoryName { get { return _dir; } }
public bool FailOnError { get { return Convert.ToBoolean(_failOnError); } }
public bool IncludeEmptyDirectories { get { return Convert.ToBoolean(_includeEmptyDirs); } }
public FileSet DeleteFileSet { get { return _fileset; } }
public bool Verbose {
get {
return (Project.Verbose || Convert.ToBoolean(_verbose));
}
}
protected override void ExecuteTask() {
// limit task to deleting either a file or a directory or a file set
if (FileName != null && DirectoryName != null) {
throw new BuildException("Cannot specify 'file' and 'dir' in the same delete task", Location);
}
// try to delete specified file
if (FileName != null) {
string path = null;
try {
path = Project.GetFullPath(FileName);
} catch (Exception e) {
string msg = String.Format("Could not determine path from {0}", FileName);
throw new BuildException(msg, Location, e);
}
DeleteFile(path);
// try to delete specified directory
} else if (DirectoryName != null) {
string path = null;
try {
path = Project.GetFullPath(DirectoryName);
} catch (Exception e) {
string msg = String.Format("Could not determine path from {0}", DirectoryName);
throw new BuildException(msg, Location, e);
}
DeleteDirectory(path);
// delete files/directories in fileset
} else {
// only use the file set if file and dir attributes have NOT been set
foreach (string path in DeleteFileSet.FileNames) {
DeleteFile(path);
}
if (IncludeEmptyDirectories) {
foreach (string path in DeleteFileSet.DirectoryNames) {
// only delete EMPTY directories (no files, no directories)
DirectoryInfo dirInfo = new DirectoryInfo(path);
if ((dirInfo.GetFiles().Length == 0) && (dirInfo.GetDirectories().Length == 0)) {
DeleteDirectory(path);
}
}
}
}
}
void DeleteDirectory(string path) {
try {
if (Directory.Exists(path)) {
if (Verbose) {
Log.WriteLine(LogPrefix + "Deleting directory {0}", path);
}
if (path.Length > 10) {
Directory.Delete(path, true);
} else {
// TODO: remove this once this task is fully tested and NAnt is at 1.0
Console.WriteLine(LogPrefix + "Path {0} is too close to root to delete this early in development", path);
}
} else {
throw new DirectoryNotFoundException();
}
} catch (Exception e) {
if (FailOnError) {
string msg = String.Format("Cannot delete directory {0}", path);
throw new BuildException(msg, Location, e);
}
}
}
void DeleteFile(string path) {
try {
if (File.Exists(path)) {
if (Verbose) {
Log.WriteLine(LogPrefix + "Deleting file {0}", path);
}
File.Delete(path);
} else {
throw new FileNotFoundException();
}
} catch (Exception e) {
if (FailOnError) {
string msg = String.Format("Cannot delete file {0}", path);
throw new BuildException(msg, Location, e);
}
}
}
}
}
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