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/*
* Copyright 1999 Phil Burk, Mobileer Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.softsynth.util;
import java.io.File;
import java.io.FilenameFilter;
import java.util.Enumeration;
import java.util.Vector;
class WildcardFilenameFilter implements FilenameFilter {
String pattern;
public WildcardFilenameFilter(String pattern) {
this.pattern = pattern;
}
/* abc*frog*xyz =?= abctreefroglegxyz */
static boolean wildMatch(String pattern, String candidate) {
int starPos = pattern.indexOf('*');
// System.out.println("------pattern = " + pattern + ", candidate = " + candidate +
// ", starPos = " + starPos );
if (starPos < 0)
return (pattern.equalsIgnoreCase(candidate));
else if (starPos > 0) {
// System.out.println("------ beginning, pattern = " + pattern + ", candidate = " +
// candidate );
if (pattern.regionMatches(true, 0, candidate, 0, starPos)) {
/* Recursively check remainder of string. */
return wildMatch(pattern.substring(starPos), candidate.substring(starPos));
}
return false;
} else {
/* Compare remainder of string. */
// System.out.println("------ remainder, pattern = " + pattern + ", candidate = " +
// candidate );
if (pattern.regionMatches(true, 1, candidate, 0, candidate.length()))
return true;
for (int i = 0; i < candidate.length(); i++) {
if (wildMatch(pattern.substring(1), candidate.substring(i)))
return true;
}
}
return false;
}
@Override
public boolean accept(File dir, String name) {
return wildMatch(pattern, name);
}
}
/**
* Wildcard search for files in directory.
*
* @author Phil Burk (C) 1999 SoftSynth.com
*/
public class FileSearch {
/**
* Expand vector of filenames that may contain wildcards into a new vector of filenames without
* wildcards.
*/
public static Vector expandFilenames(Vector filenames) {
Vector expandedFilenames = new Vector();
Enumeration e = filenames.elements();
while (e.hasMoreElements()) {
expandFilename((String) e.nextElement(), expandedFilenames);
}
return expandedFilenames;
}
/**
* Expand filename that may contain wildcards and add to a vector of filenames without
* wildcards.
*/
public static void expandFilename(String filename, Vector expandedFilenames) {
int lastSepPos = filename.lastIndexOf(File.separatorChar);
// System.out.println("expandFilename: separator = " + File.separatorChar + " , index = " +
// lastSepPos );
int starPos = filename.indexOf('*');
if (starPos < 0) {
expandedFilenames.addElement(filename);
} else if (starPos < lastSepPos) {
TextOutput.error("Wildcard * not allowed in directory names! " + filename);
} else {
String parent;
String wildFile;
if (lastSepPos < 0) {
parent = ".";
wildFile = filename;
} else {
parent = filename.substring(0, lastSepPos);
wildFile = filename.substring(lastSepPos + 1);
}
File dir = new File(parent);
// System.out.println("expandFilename: parent = " + parent + " , dir = " + dir );
if (!dir.exists()) {
TextOutput.error("Invalid directory = " + parent);
}
String[] files = dir.list(new WildcardFilenameFilter(wildFile));
if (files == null)
return;
for (int i = 0; i < files.length; i++) {
expandedFilenames.addElement(parent + File.separatorChar + files[i]);
}
}
}
/**
* Extract file name from full pathname. For example, if pathname is "/usr/data/report.txt" then
* the output will be "report.txt".
*/
public static String removeParent(String pathName) {
int lastSepPos = pathName.lastIndexOf(File.separatorChar);
if (lastSepPos < 0) {
return pathName;
} else {
return pathName.substring(lastSepPos + 1);
}
}
/**
* Remove any dot extension from file name. For example, if pathname is "/usr/data/report.txt"
* then the output will be "/usr/data/report".
*/
public static String removeExtension(String pathName) {
int lastDotPos = pathName.lastIndexOf('.');
if (lastDotPos > 0) {
return pathName.substring(0, lastDotPos);
} else {
return pathName;
}
}
public static void main(String args[]) {
System.out.println("FileSearch - by Phil Burk");
boolean result;
result = WildcardFilenameFilter.wildMatch("abc*frog*xyz", "abctreefroglegxyz");
System.out.println("result = " + result);
result = WildcardFilenameFilter.wildMatch("abc*frog*xyz", "abctreefrxglegxyz");
System.out.println("result = " + result);
test();
}
static void test() {
Vector expandedFilenames = new Vector();
expandFilename("../data/ov*.mid", expandedFilenames);
Enumeration e = expandedFilenames.elements();
while (e.hasMoreElements()) {
String name = (String) e.nextElement();
System.out.println("file = " + name);
}
}
/********************************************************
* Create directory if it doesn't exist.
*/
public static void createDirectoryIfNeeded(String directoryName) throws SecurityException {
createDirectoryIfNeeded(new File(directoryName));
}
/********************************************************
* Create directory with the given name if it doesn't exist.
*/
public static void createDirectoryIfNeeded(File dir) throws SecurityException {
if (!dir.isDirectory()) {
if (!dir.mkdirs()) {
TextOutput.error("Could not make output directory " + dir.getAbsolutePath());
}
}
}
}
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