From b4fa23dd22f91fc3f4387d0654a91ed0cf868236 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@operamail.com>
Date: Tue, 18 Jun 2013 00:41:25 +0200
Subject: add java version
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Mattias Andrée <maandree@operamail.com>
---
 src/ArgParser.java | 1007 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1007 insertions(+)
 create mode 100644 src/ArgParser.java

(limited to 'src')

diff --git a/src/ArgParser.java b/src/ArgParser.java
new file mode 100644
index 0000000..495e07c
--- /dev/null
+++ b/src/ArgParser.java
@@ -0,0 +1,1007 @@
+/**
+ * argparser – command line argument parser library
+ * 
+ * Copyright © 2013  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This library 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 3 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 General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+import java.util.*;
+import java.io.*;
+
+
+/**
+ * Simple argument parser
+ * 
+ * @author  Mattias Andrée, <a href="mailto:maandree@member.fsf.org">maandree@member.fsf.org</a>
+ */
+public class ArgParser
+{
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description  Short, single-line, description of the program
+     * @param  usage        Formated, multi-line, usage text, may be {@code null}
+     */
+    public ArgParser(final String description, final String usage)
+    {	this(description, usage, null, null, false);
+    }
+    
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description  Short, single-line, description of the program
+     * @param  usage        Formated, multi-line, usage text, may be {@code null}
+     * @param  useStderr    Whether to use stderr instead of stdout
+     */
+    public ArgParser(final String description, final String usage, final boolean useStderr)
+    {	this(description, usage, null, null, useStderr);
+    }
+    
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description      Short, single-line, description of the program
+     * @param  usage            Formated, multi-line, usage text, may be {@code null}
+     * @param  longDescription  Long, multi-line, description of the program, may be {@code null}
+     */
+    public ArgParser(final String description, final String usage, final String longDescription)
+    {	this(description, usage, longDescription, null, false);
+    }
+    
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description      Short, single-line, description of the program
+     * @param  usage            Formated, multi-line, usage text, may be {@code null}
+     * @param  longDescription  Long, multi-line, description of the program, may be {@code null}
+     * @param  useStderr        Whether to use stderr instead of stdout
+     */
+    public ArgParser(final String description, final String usage, final String longDescription, final boolean useStderr)
+    {	this(description, usage, longDescription, null, useStderr);
+    }
+    
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description      Short, single-line, description of the program
+     * @param  usage            Formated, multi-line, usage text, may be {@code null}
+     * @param  longDescription  Long, multi-line, description of the program, may be {@code null}
+     * @param  program          The name of the program, {@code null} for automatic
+     */
+    public ArgParser(final String description, final String usage, final String longDescription, final String program)
+    {	this(description, usage, longDescription, program, false);
+    }
+    
+    /**
+     * <p>Constructor</p>
+     * <p>
+     *   The short description is printed on same line as the program name
+     * </p>
+     * 
+     * @param  description      Short, single-line, description of the program
+     * @param  usage            Formated, multi-line, usage text, may be {@code null}
+     * @param  longDescription  Long, multi-line, description of the program, may be {@code null}
+     * @param  program          The name of the program, {@code null} for automatic
+     * @param  useStderr        Whether to use stderr instead of stdout
+     */
+    public ArgParser(final String description, final String usage, final String longDescription, final String program, final boolean useStderr)
+    {
+	this.linuxvt = System.getenv("TERM") == null ? false : System.getenv("TERM").equals("linux");
+	String prog = program == null ? ArgParser.parentName(0, true) : program;
+	this.program = prog == null ? "?" : prog;
+	this.description = description;
+	this.usage = usage;
+	this.longDescription = longDescription;
+	this.out = useStderr ? System.err : System.out;
+    }
+    
+    
+    
+    /**
+     * Whether the Linux VT is being used
+     */
+    public boolean linuxvt;
+    
+    /**
+     * The name of the executed command
+     */
+    public final String program;
+    
+    /**
+     * Short, single-line, description of the program
+     */
+    private final String description;
+    
+    /**
+     * Formated, multi-line, usage text, {@code null} if none
+     */
+    private final String usage;
+    
+    /**
+     * Long, multi-line, description of the program, {@code null} if none
+     */
+    private final String longDescription;
+    
+    /**
+     * The error output stream
+     */
+    private final OutputStream out;
+    
+    /**
+     * The passed arguments
+     */
+    public String[] arguments = null;
+    
+    /**
+     * The number of unrecognised arguments
+     */
+    public int unrecognisedCount = 0;
+    
+    /**
+     * Options, in order
+     */
+    private final ArrayList<Option> options = new ArrayList<Option>();
+    
+    /**
+     * Option map
+     */
+    public final HashMap<String, Option> optmap = new HashMap<String, Option>();
+    
+    /**
+     * The arguments passed that is not tied to an option
+     */
+    public final ArrayList<String> files = new ArrayList<String>();
+    
+    /**
+     * Parsed arguments, a map from option to arguments, {@code null} if not used,
+     * add one {@code null} element per argumentless use.
+     */
+    public final HashMap<String, String[]> opts = new HashMap<String, String[]>();
+    
+    
+    
+    /**
+     * Option class
+     */
+    public class Option
+    {
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  standard      Standard option index
+	 * @param  argument      Argument name, not for argumentless options
+	 */
+	protected Option(final String[] alternatives, final int standard, final String argument)
+	{
+	    this.alternatives = alternatives;
+	    this.standard = alternatives[standard < 0 ? (alternatives.length + standard) : standard];
+	    this.argument = argument == null ? "ARG" : argument;
+	}
+	
+	
+	
+	/**
+	 * Alterative option names
+	 */
+	public final String[] alternatives;
+	
+	/**
+	 * Standard option name
+	 */
+	public final String standard;
+	
+	/**
+	 * Argument name, not for argumentless options
+	 */
+	public final String argument;
+	
+	/**
+	 * Help text, multi-line
+	 */
+	public String help = null;
+    }
+    
+    
+    /**
+     * Option takes no arguments
+     */
+    public class Argumentless extends Option
+    {
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  standard      Standard option index
+	 */
+	public Argumentless(final String[] alternatives, final int standard)
+	{   super(alternatives, standard, null);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  standard      Standard option index
+	 * @param  alternatives  Alterative option names
+	 */
+	public Argumentless(final int standard, final String... alternatives)
+	{   super(alternatives, standard, null);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 */
+	public Argumentless(final String... alternatives)
+	{   super(alternatives, 0, null);
+	}
+    }
+    
+    
+    /**
+     * Option takes one argument per instance
+     */
+    public class Argumented extends Option
+    {
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  standard      Standard option index
+	 * @param  argument      Argument name
+	 */
+	public Argumented(final String[] alternatives, final int standard, final String argument)
+	{   super(alternatives, standard, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  argument      Argument name
+	 * @param  standard      Standard option index
+	 */
+	public Argumented(final String[] alternatives, final String argument, final int standard)
+	{   super(alternatives, standard, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  argument      Argument name
+	 */
+	public Argumented(final String[] alternatives, final String argument)
+	{   super(alternatives, 0, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  standard      Standard option index
+	 * @param  argument      Argument name
+	 * @param  alternatives  Alterative option names
+	 */
+	public Argumented(final int standard, final String argument, final String... alternatives)
+	{   super(alternatives, standard, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  argument      Argument name
+	 * @param  standard      Standard option index
+	 * @param  alternatives  Alterative option names
+	 */
+	public Argumented(final String argument, final int standard, final String... alternatives)
+	{   super(alternatives, standard, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  argument      Argument name
+	 * @param  alternatives  Alterative option names
+	 */
+	public Argumented(final String argument, final String... alternatives)
+	{   super(alternatives, 0, argument);
+	}
+    }
+    
+    
+    /**
+     * Option consumes all following arguments
+     */
+    public class Variadic extends Argumented
+    {
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  standard      Standard option index
+	 * @param  argument      Argument name
+	 */
+	public Variadic(final String[] alternatives, final int standard, final String argument)
+	{   super(alternatives, standard, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  argument      Argument name
+	 * @param  standard      Standard option index
+	 */
+	public Variadic(final String[] alternatives, final String argument, final int standard)
+	{   super(alternatives, argument, standard);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  alternatives  Alterative option names
+	 * @param  argument      Argument name
+	 */
+	public Variadic(final String[] alternatives, final String argument)
+	{   super(alternatives, argument);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  standard      Standard option index
+	 * @param  argument      Argument name
+	 * @param  alternatives  Alterative option names
+	 */
+	public Variadic(final int standard, final String argument, final String... alternatives)
+	{   super(standard, argument, alternatives);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  argument      Argument name
+	 * @param  standard      Standard option index
+	 * @param  alternatives  Alterative option names
+	 */
+	public Variadic(final String argument, final int standard, final String... alternatives)
+	{   super(argument, standard, alternatives);
+	}
+	
+	/**
+	 * Constructor
+	 * 
+	 * @param  argument      Argument name
+	 * @param  alternatives  Alterative option names
+	 */
+	public Variadic(final String argument, final String... alternatives)
+	{   super(argument, alternatives);
+	}
+    }
+    
+    
+    
+    /**
+     * Gets the name of the parent process
+     * 
+     * @return  The name of the parent process
+     */
+    public static String parentName()
+    {
+	return ArgParser.parentName(1, false);
+    }
+    
+    /**
+     * Gets the name of the parent process
+     * 
+     * @param   levels  The number of parents to walk, 0 for self, and 1 for direct parent
+     * @return          The name of the parent process
+     */
+    public static String parentName(final int levels)
+    {
+	return ArgParser.parentName(levels, false);
+    }
+    
+    /**
+     * Gets the name of the parent process
+     * 
+     * @param   hasInterpretor  Whether the parent process is an interpretor
+     * @return                  The name of the parent process
+     */
+    public static String parentName(final boolean hasInterpretor)
+    {
+	return ArgParser.parentName(1, hasInterpretor);
+    }
+    
+    /**
+     * Gets the name of the parent process
+     * 
+     * @param   levels          The number of parents to walk, 0 for self, and 1 for direct parent
+     * @param   hasInterpretor  Whether the parent process is an interpretor
+     * @return                  The name of the parent process
+     */
+    public static String parentName(final int levels, final boolean hasInterpretor)
+    {
+	int pid;
+	try
+	{   pid = Integer.parseInt((new File("/proc/self")).getCanonicalPath().substring(6));
+	}
+	catch (final Throwable err)
+	{   return null;
+	}
+	int lvl = levels;
+	try
+	{   outer:
+	        while (lvl > 1)
+		{
+		    InputStream is = null;
+		    try
+		    {   is = new FileInputStream(new File("/proc/" + pid + "/status"));
+			byte[] data = new byte[is.available()];
+			int off = 0;
+			while (off != data.length)
+			    off += is.read(data, off, data.length - off);
+			String[] lines = (new String(data, "UTF-8")).split("\n");
+			for (String line : lines)
+			{    if (line.startsWith("PPid:"))
+			     {
+				 line = line.substring(5);
+				 line = line.replace('\t', ' ').replace('\n', ' ').replace(" ", "");
+				 pid = Integer.parseInt(line);
+				 lvl -= 1;
+				 continue outer;
+			}    }
+			return null;
+		    }
+		    finally
+		    {   if (is != null)
+			    try
+			    {    is.close();
+			    }
+			    catch (final Throwable ignore)
+			    {    /* ignore */
+		    }       }
+	         }
+	    InputStream is = null;
+	    try
+	    {   is = new FileInputStream(new File("/proc/" + pid + "/cmdline"));
+		byte[] data = new byte[is.available()];
+		int off = 0;
+		while (off != data.length)
+		    off += is.read(data, off, data.length - off);
+		String[] cmdline = new String(data, 0, off - 1, "UTF-8").split("\0");
+		if (hasInterpretor == false)
+		{   String rc = cmdline[0];
+		    return rc.length() == 0 ? null : rc;
+		}
+		boolean dashed = false;
+		for (int i = 1, n = cmdline.length; i < n; i++)
+		{
+		    if (dashed)
+			return cmdline[i];
+		    if (cmdline[i].equals("--"))
+			dashed = true;
+		    else if (cmdline[i].equals("-cp") || cmdline[i].equals("-classpath"))
+			i++;
+		    else if (cmdline[i].startsWith("-") == false)
+			return cmdline[i];
+		}
+	    }
+	    finally
+	    {   if (is != null)
+		    try
+		    {    is.close();
+		    }
+		    catch (final Throwable ignore)
+		    {    /* ignore */
+	    }       }
+	    return null;
+	}
+	catch (final Throwable err)
+	{   return null;
+	}
+    }
+    
+    
+    /**
+     * Print an empty line to the selected error channel
+     */
+    private void println()
+    {
+	this.print("\n", true);
+    }
+    
+    /**
+     * Print an empty line to the selected error channel
+     * 
+     * @param  flush  Whether to flush the stream
+     */
+    private void println(final boolean flush)
+    {
+	this.print("\n", flush);
+    }
+    
+    /**
+     * Print a text with an added line break to the selected error channel
+     */
+    private void println(final String text)
+    {
+	this.print(text + "\n", true);
+    }
+    
+    /**
+     * Print a text with an added line break to the selected error channel
+     * 
+     * @param  flush  Whether to flush the stream
+     */
+    private void println(final String text, final boolean flush)
+    {
+	this.print(text + "\n", flush);
+    }
+    
+    /**
+     * Print a text to the selected error channel
+     */
+    private void print(final String text)
+    {
+	this.print(text, false);
+    }
+    
+    /**
+     * Print a text to the selected error channel
+     * 
+     * @param  flush  Whether to flush the stream
+     */
+    private void print(final String text, final boolean flush)
+    {
+	try
+	{   if (text != null)
+		this.out.write(text.getBytes("UTF-8"));
+	    if (flush)
+		this.out.flush();
+	}
+	catch (final Throwable ignore)
+	{   /* ignore */
+	}
+    }
+    
+    
+    /**
+     * Add an option
+     * 
+     * @param  option  The option
+     */
+    public void add(final Option option)
+    {
+	this.options.add(option);
+	for (final String alternative : option.alternatives)
+	    this.optmap.put(alternative, option);
+	this.opts.put(option.standard, null);
+    }
+    
+    /**
+     * Add an option
+     * 
+     * @param  option  The option
+     * @param  help    Help text, multi-line
+     */
+    public void add(final Option option, final String help)
+    {
+	this.add(help, option);
+    }
+    
+    /**
+     * Add an option
+     * 
+     * @param  help    Help text, multi-line
+     * @param  option  The option
+     */
+    public void add(final String help, final Option option)
+    {
+	this.add(option);
+	option.help = help;
+    }
+    
+    
+    /**
+     * Maps up options that are alternatives to the first alternative for each option
+     */
+    public void supportAlternatives()
+    {
+        for (final String opt : this.optmap.keySet())
+	    this.opts.put(opt, this.opts.get(this.optmap.get(opt).standard));
+    }
+    
+    
+    /**
+     * Checks for option conflicts
+     * 
+     * @param   exclusives  Exclusive options
+     * @param   exitValue   The value to exit with on the check does not pass,
+     * @return              Whether at most one exclusive option was used
+     */
+    public boolean testExclusiveness(final Set<String> exclusives, final int exitValue)
+    {
+	boolean rc = this.testExclusiveness(exclusives);
+	if (rc == false)
+	    System.exit(exitValue);
+	return rc;
+    }
+    
+    /**
+     * Checks for option conflicts
+     * 
+     * @param   exclusives  Exclusive options
+     * @return              Whether at most one exclusive option was used
+     */
+    public boolean testExclusiveness(final Set<String> exclusives)
+    {
+	final ArrayList<String> used = new ArrayList<String>();
+	
+	for (final String opt : this.opts.keySet())
+	    if ((this.opts.get(opt) != null) && exclusives.contains(opt))
+		used.add(opt);
+	
+	if (used.size() > 1)
+	{   String msg = this.program + ": conflicting options:";
+	    for (final String opt : used)
+		if (this.optmap.get(opt).standard.equals(opt))
+		    msg += " " + opt;
+		else
+		    msg += " " + opt + "(" + this.optmap.get(opt).standard + ")";
+	    this.println(msg, true);
+	    return false;
+	}
+	return true;
+    }
+    
+    
+    /**
+     * Checks for out of context option usage
+     * 
+     * @param   allowed     Allowed options
+     * @param   exitValue   The value to exit with on the check does not pass,
+     * @return              Whether only allowed options was used
+     */
+    public boolean testAllowed(final Set<String> allowed, final int exitValue)
+    {
+	boolean rc = this.testAllowed(allowed);
+	if (rc == false)
+	    System.exit(exitValue);
+	return rc;
+    }
+    
+    /**
+     * Checks for out of context option usage
+     * 
+     * @param   allowed  Allowed options
+     * @return           Whether only allowed options was used
+     */
+    public boolean testAllowed(final Set<String> allowed)
+    {
+	boolean rc = true;
+	for (final String opt : this.opts.keySet())
+	    if ((this.opts.get(opt) != null) && (allowed.contains(opt) == false))
+	    {   String msg = this.program + ": option used out of context: " + opt;
+		if (opt.equals(this.optmap.get(opt).standard) == false)
+		    msg += "(" + this.optmap.get(opt).standard + ")";
+		this.println(msg, true);
+		rc = false;
+	    }
+	return rc;
+    }
+    
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   min        The minimum number of files
+     * @param   exitValue  The value to exit with on the check does not pass
+     * @return             Whether the usage was correct
+     */
+    public boolean testFilesMin(final int min, final int exitValue)
+    {
+	boolean rc = this.testFilesMin(min);
+	if (rc == false)
+	    System.exit(exitValue);
+	return rc;
+    }
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   min  The minimum number of files
+     * @return       Whether the usage was correct
+     */
+    public boolean testFilesMin(final int min)
+    {
+	return min <= this.files.size();
+    }
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   max        The maximum number of files
+     * @param   exitValue  The value to exit with on the check does not pass
+     * @return             Whether the usage was correct
+     */
+    public boolean testFilesMax(final int max, final int exitValue)
+    {
+	boolean rc = this.testFilesMax(max);
+	if (rc == false)
+	    System.exit(exitValue);
+	return rc;
+    }
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   max  The maximum number of files
+     * @return       Whether the usage was correct
+     */
+    public boolean testFilesMax(final int max)
+    {
+	return this.files.size() <= max;
+    }
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   min        The minimum number of files
+     * @param   max        The maximum number of files
+     * @param   exitValue  The value to exit with on the check does not pass
+     * @return             Whether the usage was correct
+     */
+    public boolean testFiles(final int min, final int max, final int exitValue)
+    {
+	boolean rc = this.testFiles(min, max);
+	if (rc == false)
+	    System.exit(exitValue);
+	return rc;
+    }
+    
+    /**
+     * Checks the correctness of the number of used non-option arguments
+     * 
+     * @param   min  The minimum number of files
+     * @param   max  The maximum number of files
+     * @return       Whether the usage was correct
+     */
+    public boolean testFiles(final int min, final int max)
+    {
+	return (min <= this.files.size()) && (this.files.size() <= max);
+    }
+    
+    
+    /**
+     * Prints a colourful help message
+     */
+    public void help()
+    {
+	final String dash = this.linuxvt ? "-" : "—";
+	this.println("\033[01m" + program + "\033[21m " + dash + " " + this.description + "\n", false);
+	if (this.longDescription != null)
+	    this.println(longDescription, false);
+	this.println(false);
+	
+	if (this.usage != null)
+	{   this.print("\033[01mUSAGE:\033[21m");
+	    boolean first = true;
+	    for (final String line : this.usage.split("\n"))
+	    {   if (first)
+		    first = false;
+		else
+		    this.print("    or");
+		this.println("\t" + line, false);
+	    }
+	    this.println(false);
+	}
+	
+	int maxfirstlen = 0;
+	for (final Option opt : this.options)
+	{   if (opt.help == null)
+		continue;
+	    if (opt.alternatives.length > 1)
+		if (maxfirstlen < opt.alternatives[0].length())
+		    maxfirstlen = opt.alternatives[0].length();
+	}
+	String empty = "        ";
+	while (empty.length() < maxfirstlen)
+	    empty += empty;
+	empty = empty.substring(0, maxfirstlen);
+	
+	this.println("\033[01mSYNOPSIS:\033[21m", false);
+	final ArrayList<String> lines = new ArrayList<String>();
+	final ArrayList<int[]>  lens  = new ArrayList<int[]>();
+	for (final Option opt : this.options)
+	{   if (opt.help == null)
+		continue;
+	    int l = 0;
+	    String first = opt.alternatives[0];
+	    String last  = opt.alternatives[opt.alternatives.length - 1];
+	    if (first == last)
+		first = empty;
+	    else
+		first += empty.substring(first.length());
+	    String line = "    \033[02m" + first + "\033[22m  %colour%" + last;
+	    l += first.length() + 6 + last.length();
+	    if (opt instanceof Variadic)
+	    {	line += " [\033[04m" + opt.argument + "\033[24m...]";
+		l += opt.argument.length() + 6;
+	    }
+	    else if (opt instanceof Argumented)
+	    {	line += " \033[04m" + opt.argument + "\033[24m";
+		l += opt.argument.length() + 1;
+	    }
+	    lines.add(line);
+	    lens.add(new int[] { l });
+	}
+	
+	int col = lens.size();
+	col += 8 - ((col - 4) & 7);
+	int index = 0;
+	while (empty.length() < col)
+	    empty += empty;
+	empty = empty.substring(0, col);
+	for (final Option opt : this.options)
+	{   if (opt.help == null)
+		continue;
+	    boolean first = true;
+	    final String colour = (index & 1) == 0 ? "36" : "34";
+	    {   String line = lines.get(index).replace("%colour%", "\033[" + colour + ";01m");
+		line += empty.substring(lens.get(index)[0]);
+		this.print(line, false);
+	    }
+	    for (final String line : opt.help.split("\n"))
+		if (first)
+		{   first = false;
+		    print(line + "\033[00m\n");
+		}
+		else
+		    print(empty + "\033[" + colour + "m" + line + "\033[00m\n");
+	    index++;
+	}
+	
+	this.println(true);
+    }
+    
+    
+    /**
+     * Parse arguments
+     * 
+     * @param   args  The command line arguments, however it should not include the execute file at index 0
+     * @return        Whether no unrecognised option is used
+     */
+    public boolean parse(final String[] argv)
+    {
+	this.arguments = argv;
+	
+	final ArrayList<String> argqueue = new ArrayList<String>();
+	final ArrayList<String> optqueue = new ArrayList<String>();
+	final ArrayList<String>    queue = new ArrayList<String>();
+	for (final String arg : argv)
+	    queue.add(arg);
+	
+	boolean dashed = false, tmpdashed = false, rc = true;
+	int get = 0, dontget = 0;
+	
+	while (queue.size() > 0)
+	{   final String arg = queue.remove(0);
+	    if ((get > 0) && (dontget == 0))
+	    {   get--;
+		argqueue.add(arg);
+	    }
+	    else if (tmpdashed)
+	    {	this.files.add(arg);
+		tmpdashed = false;
+	    }
+	    else if (dashed)            this.files.add(arg);
+	    else if (arg.equals("++"))  tmpdashed = true;
+	    else if (arg.equals("--"))  dashed = true;
+	    else if ((arg.length() > 1) && ((arg.charAt(0) == '-') || (arg.charAt(0) == '+')))
+		if ((arg.length() > 2) && (arg.charAt(1) == arg.charAt(0)))
+		{   Option opt = this.optmap.get(arg);
+		    if (dontget > 0)
+			dontget--;
+		    else if ((opt != null) && (opt.getClass() == Argumentless.class))
+		    {	optqueue.add(arg);
+			argqueue.add(null);
+		    }
+		    else if (arg.contains("="))
+		    {	String arg_opt = arg.substring(0, arg.indexOf('='));
+			Option arg_opt_opt = this.optmap.get(arg_opt);
+			if ((arg_opt_opt != null) && (arg_opt_opt instanceof Argumented))
+			{   optqueue.add(arg_opt);
+			    argqueue.add(arg.substring(arg.indexOf('=') + 1));
+			    if (arg_opt_opt instanceof Variadic)
+				dashed = true;
+			}
+			else
+			{   if (++this.unrecognisedCount <= 5)
+				this.println(this.program + ": warning: unrecognised option " + arg, true);
+			    rc = false;
+			}
+		    }
+		    else if ((opt != null) && (opt.getClass() == Argumented.class))
+		    {	optqueue.add(arg);
+			get++;
+		    }
+		    else if ((opt != null) && (opt.getClass() == Variadic.class))
+		    {	optqueue.add(arg);
+			argqueue.add(null);
+			dashed = true;
+		    }
+		    else
+		    {   if (++this.unrecognisedCount <= 5)
+			    this.println(this.program + ": warning: unrecognised option " + arg, true);
+			rc = false;
+		    }
+		}
+		else
+		{   String sign = String.valueOf(arg.charAt(0)), narg;
+		    int i = 1, n = arg.length();
+		    while (i < n)
+		    {	Option opt = this.optmap.get(narg = sign + arg.charAt(i++));
+			if (opt != null)
+			    if (opt.getClass() == Argumentless.class)
+			    {   optqueue.add(narg);
+				argqueue.add(null);
+			    }
+			    else if (opt.getClass() == Argumented.class)
+			    {	optqueue.add(narg);
+				String nargarg = arg.substring(i);
+				if (nargarg.length() == 0)
+				    get++;
+				else
+				    argqueue.add(nargarg);
+				break;
+			    }
+			    else
+			    {	optqueue.add(narg);
+				String nargarg = arg.substring(i);
+				argqueue.add(nargarg.length() > 0 ? nargarg : null);
+				dashed = true;
+				break;
+			    }
+			else
+			{   if (++this.unrecognisedCount <= 5)
+				this.println(this.program + ": warning: unrecognised option " + arg, true);
+			    rc = false;
+			}
+		}   }
+	    else
+		this.files.add(arg);
+	}
+	
+	return rc;
+    }
+    
+}
+
-- 
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