com.github.stephenc.javaisotools.iso9660.NamingConventions Maven / Gradle / Ivy
/*
* Copyright (c) 2010. Stephen Connolly.
* Copyright (C) 2007. Jens Hatlak
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.github.stephenc.javaisotools.iso9660;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import com.github.stephenc.javaisotools.sabre.HandlerException;
public abstract class NamingConventions {
public static boolean VERBOSE = false;
private static HashMap extensionMapper;
private String id;
public NamingConventions(String id) {
this.id = id;
addExtensionMapping("tar.gz", "tgz");
addExtensionMapping("tar.bz2", "tbz");
}
public String getID() {
return id;
}
public static void addExtensionMapping(String extension, String mapping) {
if (extensionMapper == null) {
extensionMapper = new HashMap();
}
if (!extensionMapper.containsKey(extension)) {
extensionMapper.put(extension, mapping);
}
}
public static String getExtensionMapping(String extension) {
if (extensionMapper == null) {
return null;
}
return (String) extensionMapper.get(extension);
}
public void startRenaming(ISO9660Directory dir) {
if (VERBOSE) {
System.out.print(id + ": Renamed directory " + dir.getISOPath());
}
}
public void startRenaming(ISO9660File file) {
if (VERBOSE) {
System.out.print(id + ": Renamed file " + file.getISOPath());
}
}
public void endRenaming(ISO9660Directory dir) {
if (VERBOSE) {
System.out.println(" to " + dir.getName());
}
}
public void endRenaming(ISO9660File file) {
if (VERBOSE) {
System.out.println(" to " + file.getFullName());
}
}
public void setFilename(ISO9660Directory dir, String filename) {
if (!filename.equals(dir.getName())) {
startRenaming(dir);
dir.setName(filename);
endRenaming(dir);
}
}
public void setFilename(ISO9660File file, String filename) {
if (!filename.equals(file.getFilename())) {
startRenaming(file);
file.setFilename(filename);
endRenaming(file);
}
}
public void setFilename(ISO9660File file, String filename, String extension) {
if (!filename.equals(file.getFilename()) || !extension.equals(file.getExtension())) {
startRenaming(file);
file.setFilename(filename);
file.setExtension(extension);
endRenaming(file);
}
}
public void incrementFilename(ISO9660Directory dir) throws HandlerException {
String filename = dir.getName();
if (filename.length() > 0) {
int number = -1;
int position = filename.length() - 1;
while (position >= 0) {
try {
number = Integer.parseInt(filename.substring(position, filename.length()));
position--;
} catch (NumberFormatException e) {
break;
}
}
if (number >= 0) {
// Filename ends with a number -> overwrite with incremented number
number++;
if (position > 0) {
filename = filename.substring(0, position + 1);
} else {
filename = "";
}
filename += number;
} else {
// Filename does not end with a number -> append 2
// First try to append the number
ISO9660Directory copy = new ISO9660Directory(filename + "2");
apply(copy);
if (checkFilenameEquality(copy.getName(), filename)) {
// Adding the number did not change the filename -> replace last character
filename = filename.substring(0, filename.length()) + "2";
} else {
filename = copy.getName();
}
}
} else {
filename = "2";
}
setFilename(dir, filename);
}
public void incrementFilename(ISO9660File file) throws HandlerException {
String filename = file.getFilename();
if (filename.length() > 0) {
int number = -1;
int position = filename.length() - 1;
while (position >= 0) {
try {
number = Integer.parseInt(filename.substring(position, filename.length()));
position--;
} catch (NumberFormatException e) {
break;
}
}
if (number >= 0) {
// Filename ends with a number -> overwrite with incremented number
number++;
if (position > 0) {
filename = filename.substring(0, position + 1);
} else {
filename = "";
}
filename += number;
} else {
// Filename does not end with a number -> append 2
// First try to append the number
ISO9660File copy = null;
try {
copy = new ISO9660File(file);
} catch (HandlerException e) {
e.printStackTrace();
}
apply(copy);
if (checkFilenameEquality(copy.getFilename(), filename)) {
// Adding the number did not change the filename -> replace last character
filename = filename.substring(0, filename.length()) + "2";
} else {
filename = copy.getFilename();
}
}
} else {
filename = "2";
}
setFilename(file, filename);
}
public boolean checkFilenameEquality(String name1, String name2) {
return name1.equals(name2);
}
public void processDirectory(ISO9660Directory dir) throws HandlerException {
List duplicates = new ArrayList();
// Prepare files and directories to be processed in sorted order
List contents = new ArrayList();
contents.addAll(dir.getDirectories());
contents.addAll(dir.getFiles());
Collections.sort(contents);
boolean duplicate;
for (ISO9660HierarchyObject object : contents) {
duplicate = false;
if (object instanceof ISO9660Directory) {
ISO9660Directory subdir = (ISO9660Directory) object;
apply(subdir);
while (checkDuplicate(duplicates, subdir.getName(), -1)) {
incrementFilename(subdir);
duplicate = true;
}
if (!duplicate) {
duplicates.clear();
}
addDuplicate(duplicates, subdir.getName(), -1);
checkPathLength(subdir.getISOPath());
} else if (object instanceof ISO9660File) {
ISO9660File file = (ISO9660File) object;
apply(file);
while (checkDuplicate(duplicates, file.getName(), file.getVersion())) {
incrementFilename(file);
duplicate = true;
}
if (!duplicate) {
duplicates.clear();
}
addDuplicate(duplicates, file.getName(), file.getVersion());
checkPathLength(file.getISOPath());
} else {
throw new HandlerException("Neither file nor directory: " + object);
}
}
}
public boolean checkDuplicate(List duplicates, String name, int version) {
return checkDuplicate(duplicates, name, version, true);
}
public boolean checkDuplicate(List duplicates, String name, int version, boolean checkVersion) {
for (String[] data : duplicates) {
// Check for name equality
if (checkFilenameEquality(data[0], name)) {
int aVersion = Integer.parseInt(data[1]);
// Require version equality for files
if (!checkVersion || aVersion == -1 || version == aVersion) {
return true;
}
}
}
return false;
}
public void addDuplicate(List duplicates, String name, int version) {
String[] data = {name, version + ""};
duplicates.add(data);
}
public abstract void apply(ISO9660Directory dir) throws HandlerException;
public abstract void apply(ISO9660File file) throws HandlerException;
public abstract void checkPathLength(String isoPath);
}
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