/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Eclipse Public License version 1.0, available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.jboss.aesh.extensions.ls;
import org.jboss.aesh.cl.Arguments;
import org.jboss.aesh.cl.CommandDefinition;
import org.jboss.aesh.cl.Option;
import org.jboss.aesh.console.Config;
import org.jboss.aesh.console.command.Command;
import org.jboss.aesh.console.command.CommandResult;
import org.jboss.aesh.console.command.invocation.CommandInvocation;
import org.jboss.aesh.extensions.grep.AeshPosixFilePermissions;
import org.jboss.aesh.parser.Parser;
import org.jboss.aesh.terminal.Color;
import org.jboss.aesh.terminal.Shell;
import org.jboss.aesh.terminal.TerminalColor;
import org.jboss.aesh.terminal.TerminalString;
import org.jboss.aesh.util.FileLister;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.DosFileAttributes;
import java.nio.file.attribute.PosixFileAttributes;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
/**
* @author <a href="mailto:stale.pedersen@jboss.org">Ståle W. Pedersen</a>
*/
@CommandDefinition(name = "ls", description = "[OPTION]... [FILE]...\n" +
"List information about the FILEs (the current directory by default).\n" +
"Sort entries alphabetically if none of -cftuvSUX nor --sort is specified.\n")
public class Ls implements Command {
@Option(shortName = 'H', name = "help", hasValue = false,
description = "display this help and exit")
private boolean help;
@Option(shortName = 'a', name = "all", hasValue = false,
description = "do not ignore entries starting with .")
private boolean all;
@Option(shortName = 'd', name = "directory", hasValue = false,
description = "list directory entries instead of contents, and do not dereference symbolic links")
private boolean directory;
@Option(shortName = 'l', name = "longlisting", hasValue = false,
description = "use a long listing format")
private boolean longListing;
@Option(shortName = 's', name = "size", hasValue = false,
description = "print the allocated size of each file, in blocks")
private boolean size;
@Arguments
private List<File> arguments;
private File cwd;
private static final char SPACE = ' ';
private static final Class<? extends BasicFileAttributes> fileAttributes =
Config.isOSPOSIXCompatible() ? PosixFileAttributes.class : DosFileAttributes.class;
private static DateFormat DATE_FORMAT = new SimpleDateFormat("MMM dd hh:mm");
public Ls() {
cwd = new File(Config.getUserDir());
}
public Ls(File cwd) {
if(cwd != null && cwd.isDirectory())
this.cwd = cwd;
else
cwd = new File(Config.getUserDir());
}
@Override
public CommandResult execute(CommandInvocation commandInvocation) throws IOException {
//just display help and return
if(help) {
commandInvocation.getShell().out().println(commandInvocation.getHelpInfo("ls"));
return CommandResult.SUCCESS;
}
if(arguments == null) {
arguments = new ArrayList<File>(1);
arguments.add(cwd);
}
for(File f : arguments) {
if(f.isDirectory())
displayDirectory(f, commandInvocation.getShell());
else if(f.isFile())
displayFile(f,commandInvocation.getShell());
else if(!f.exists()) {
commandInvocation.getShell().out().println("ls: cannot access "+
f.toString()+": No such file or directory");
}
}
return CommandResult.SUCCESS;
}
public void setCwd(File cwd) {
if(cwd.isDirectory())
this.cwd = cwd;
}
private void displayDirectory(File input, Shell shell) {
if(longListing) {
if(all) {
File[] files = input.listFiles();
Arrays.sort(files, new PosixFileNameComparator());
shell.out().println(
displayLongListing(files));
}
else {
File[] files = input.listFiles(new FileLister.FileAndDirectoryNoDotNamesFilter());
Arrays.sort(files, new PosixFileNameComparator());
shell.out().println(
displayLongListing(files));
}
}
else {
if(all)
shell.out().println(Parser.formatDisplayListTerminalString(
formatFileList(input.listFiles()),
shell.getSize().getHeight(), shell.getSize().getWidth()));
else
shell.out().println(Parser.formatDisplayListTerminalString(
formatFileList(input.listFiles(new FileLister.FileAndDirectoryNoDotNamesFilter())),
shell.getSize().getHeight(), shell.getSize().getWidth()));
}
}
private List<TerminalString> formatFileList(File[] fileList) {
ArrayList<TerminalString> list = new ArrayList<TerminalString>(fileList.length);
for(File file : fileList) {
if(file.isDirectory())
list.add(new TerminalString(file.getName(),
new TerminalColor(Color.BLUE, Color.DEFAULT)));
else
list.add(new TerminalString(file.getName()));
}
Collections.sort(list, new PosixTerminalStringNameComparator());
return list;
}
private void displayFile(File input, Shell shell) {
}
private String displayLongListing(File[] files) {
StringGroup access = new StringGroup(files.length);
StringGroup size = new StringGroup(files.length);
StringGroup owner = new StringGroup(files.length);
StringGroup group = new StringGroup(files.length);
StringGroup modified = new StringGroup(files.length);
try {
int counter = 0;
for(File file : files) {
BasicFileAttributes attr = Files.readAttributes(file.toPath(), fileAttributes);
access.addString(AeshPosixFilePermissions.toString(((PosixFileAttributes) attr)), counter);
size.addString(String.valueOf(attr.size()), counter);
if(Config.isOSPOSIXCompatible())
owner.addString(((PosixFileAttributes) attr).owner().getName(), counter);
else
owner.addString("", counter);
if(Config.isOSPOSIXCompatible())
group.addString(((PosixFileAttributes) attr).group().getName(), counter);
else
owner.addString("", counter);
modified.addString(DATE_FORMAT.format(new Date(attr.lastModifiedTime().toMillis())), counter);
counter++;
}
}
catch (IOException e) {
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
StringBuilder builder = new StringBuilder();
TerminalColor directoryColor = new TerminalColor(Color.BLUE, Color.DEFAULT, Color.Intensity.BRIGHT);
for(int i=0; i < files.length; i++) {
if(files[i].isDirectory()) {
builder.append(access.getString(i))
.append(owner.getFormattedString(i))
.append(group.getFormattedString(i))
.append(size.getFormattedString(i))
.append(SPACE)
.append(modified.getString(i))
.append(SPACE);
builder.append(new TerminalString(files[i].getName(), directoryColor))
.append(Config.getLineSeparator());
}
else {
builder.append(access.getString(i))
.append(owner.getFormattedString(i))
.append(group.getFormattedString(i))
.append(size.getFormattedString(i))
.append(SPACE)
.append(modified.getString(i))
.append(SPACE)
.append(files[i].getName())
.append(Config.getLineSeparator());
}
}
return builder.toString();
}
class PosixTerminalStringNameComparator implements Comparator<TerminalString> {
private static final char DOT = '.';
@Override
public int compare(TerminalString o1, TerminalString o2) {
if(o1.getCharacters().length() > 1 && o2.getCharacters().length() > 1) {
if(o1.getCharacters().indexOf(DOT) == 0) {
if(o2.getCharacters().indexOf(DOT) == 0)
return o1.getCharacters().substring(1).compareToIgnoreCase(o2.getCharacters().substring(1));
else
return o1.getCharacters().substring(1).compareToIgnoreCase(o2.getCharacters());
}
else {
if(o2.getCharacters().indexOf(DOT) == 0)
return o1.getCharacters().compareToIgnoreCase(o2.getCharacters().substring(1));
else
return o1.getCharacters().compareToIgnoreCase(o2.getCharacters());
}
}
else
return 0;
}
}
class PosixFileNameComparator implements Comparator<File> {
private static final char DOT = '.';
@Override
public int compare(File o1, File o2) {
if(o1.getName().length() > 1 && o2.getName().length() > 1) {
if(o1.getName().indexOf(DOT) == 0) {
if(o2.getName().indexOf(DOT) == 0)
return o1.getName().substring(1).compareToIgnoreCase(o2.getName().substring(1));
else
return o1.getName().substring(1).compareToIgnoreCase(o2.getName());
}
else {
if(o2.getName().indexOf(DOT) == 0)
return o1.getName().compareToIgnoreCase(o2.getName().substring(1));
else
return o1.getName().compareToIgnoreCase(o2.getName());
}
}
else
return 0;
}
}
}