/*
* Jopr Management Platform
* Copyright (C) 2005-2009 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* 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 and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.plugins.jbossas5.script;
import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.jetbrains.annotations.NotNull;
import org.rhq.core.system.OperatingSystemType;
import org.rhq.core.system.SystemInfo;
/**
* A class that finds all script files beneath a specified set of directories on the local filesystem. The code will
* follow symbolic links on *NUX platforms but protects against circularity.
*
* @author Ian Springer
* @author Jay Shaughnessy
*/
public class ScriptFileFinder
{
private final Log log = LogFactory.getLog(this.getClass());
private SystemInfo systemInfo;
private List<File> scanDirectories;
public static List<String> getSupportedFileExtensions(SystemInfo systemInfo) {
switch (systemInfo.getOperatingSystemType()) {
case WINDOWS:
return Arrays.asList("bat", "cmd");
default: //UNIX
return Arrays.asList("sh", "pl");
}
}
public static FileFilter getScriptFileFilter(SystemInfo systemInfo) {
final List<String> supportedExtensions = getSupportedFileExtensions(systemInfo);
final boolean isCaseSensitive = systemInfo.getOperatingSystemType() != OperatingSystemType.WINDOWS;
return new FileFilter() {
public boolean accept(File file) {
if (file.isDirectory())
{
return false;
}
String path = file.getPath();
int dotIndex = path.lastIndexOf(".");
String extension = (dotIndex != -1) ? path.substring(dotIndex + 1)
: "";
if (isCaseSensitive) {
return supportedExtensions.contains(extension);
} else {
for (String supportedExtension : supportedExtensions) {
if (supportedExtension.equalsIgnoreCase(extension)) {
return true;
}
}
return false;
}
}
};
}
public ScriptFileFinder(SystemInfo systemInfo, File... scanDirectories)
{
this.scanDirectories = Arrays.asList(scanDirectories);
this.systemInfo = systemInfo;
}
protected List<File> getScanDirectories()
{
return this.scanDirectories;
}
@NotNull
public List<File> findScriptFiles()
{
List<File> scriptFiles = new ArrayList<File>();
for (File scanDir : this.scanDirectories)
{
if (!scanDir.isAbsolute())
{
log.warn("The specified scan directory (" + scanDir
+ ") is not absolute.");
continue;
}
if (!scanDir.exists())
{
log.warn("The specified scan directory (" + scanDir
+ ") does not exist.");
continue;
}
if (!scanDir.isDirectory())
{
log.warn("The specified scan directory (" + scanDir
+ ") is not a directory.");
continue;
}
findScriptFiles(scanDir, new ArrayList<File>(), scriptFiles);
}
return scriptFiles;
}
protected void findScriptFiles(File scanDir, List<File> excludeDirs,
List<File> scriptFiles)
{
if (!scanDir.isDirectory())
{
return;
}
File canonicalScanDir = null;
try
{
canonicalScanDir = scanDir.getCanonicalFile();
}
catch (IOException e)
{
// if we aren't allowed to reach the canonical path, skip this
// directory
return;
}
// if we've seen this directory before (or it's explicitly excluded by
// the caller) skip this directory.
// this protects against following cyclic symbolic links.
if (excludeDirs.contains(canonicalScanDir))
{
return;
}
// add to the directories we've seen
excludeDirs.add(canonicalScanDir);
scriptFiles.addAll(Arrays.asList(scanDir
.listFiles(getScriptFileFilter(systemInfo))));
File[] subDirs = scanDir.listFiles(new DirectoryFilter());
for (File subDir : subDirs)
{
findScriptFiles(subDir, excludeDirs, scriptFiles); // recurse
}
}
protected static class DirectoryFilter implements FileFilter
{
public boolean accept(File file)
{
return (file.isDirectory());
}
}
}