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	/*
	* Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.java.util.jar.pack;

	import java.io.IOException;
	import java.io.InputStream;
	import java.io.PrintStream;
	import java.io.PrintWriter;
	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Comparator;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Properties;
	import java.util.Set;
	import java.util.SortedMap;
	import java.util.TreeMap;
	import java.util.jar.Pack200;
	import java.lang.reflect.Constructor;
	import java.lang.reflect.InvocationTargetException;
	import java.lang.reflect.Method;

	/**
	* Control block for publishing Pack200 options to the other classes.
	*/

	final class PropMap implements SortedMap<String, String> {
	private final TreeMap<String, String> theMap = new TreeMap<>();;

	// type is erased, elements are of type java.beans.PropertyChangeListener
	private final List<Object> listenerList = new ArrayList<>(1);

	void addListener(Object listener) {
	assert Beans.isPropertyChangeListener(listener);
	listenerList.add(listener);
	}

	void removeListener(Object listener) {
	assert Beans.isPropertyChangeListener(listener);
	listenerList.remove(listener);
	}

	// Override:
	public String put(String key, String value) {
	String oldValue = theMap.put(key, value);
	if (value != oldValue && !listenerList.isEmpty()) {
	assert Beans.isBeansPresent();
	// Post the property change event.
	Object event = Beans.newPropertyChangeEvent(this, key, oldValue, value);
	for (Object listener : listenerList) {
	Beans.invokePropertyChange(listener, event);
	}
	}
	return oldValue;
	}

	// All this other stuff is private to the current package.
	// Outide clients of Pack200 do not need to use it; they can
	// get by with generic SortedMap functionality.
	private static Map<String, String> defaultProps;
	static {
	Properties props = new Properties();

	// Allow implementation selected via -Dpack.disable.native=true
	props.put(Utils.DEBUG_DISABLE_NATIVE,
	String.valueOf(Boolean.getBoolean(Utils.DEBUG_DISABLE_NATIVE)));

	// Set the DEBUG_VERBOSE from system
	props.put(Utils.DEBUG_VERBOSE,
	String.valueOf(Integer.getInteger(Utils.DEBUG_VERBOSE,0)));

	// Set the PACK_TIMEZONE_NO_UTC
	props.put(Utils.PACK_DEFAULT_TIMEZONE,
	String.valueOf(Boolean.getBoolean(Utils.PACK_DEFAULT_TIMEZONE)));

	// The segment size is unlimited
	props.put(Pack200.Packer.SEGMENT_LIMIT, "-1");

	// Preserve file ordering by default.
	props.put(Pack200.Packer.KEEP_FILE_ORDER, Pack200.Packer.TRUE);

	// Preserve all modification times by default.
	props.put(Pack200.Packer.MODIFICATION_TIME, Pack200.Packer.KEEP);

	// Preserve deflation hints by default.
	props.put(Pack200.Packer.DEFLATE_HINT, Pack200.Packer.KEEP);

	// Pass through files with unrecognized attributes by default.
	props.put(Pack200.Packer.UNKNOWN_ATTRIBUTE, Pack200.Packer.PASS);

	// Pass through files with unrecognized format by default, also
	// allow system property to be set
	props.put(Utils.CLASS_FORMAT_ERROR,
	System.getProperty(Utils.CLASS_FORMAT_ERROR, Pack200.Packer.PASS));

	// Default effort is 5, midway between 1 and 9.
	props.put(Pack200.Packer.EFFORT, "5");

	// Define certain attribute layouts by default.
	// Do this after the previous props are put in place,
	// to allow override if necessary.
	String propFile = "intrinsic.properties";

	try (InputStream propStr = PackerImpl.class.getResourceAsStream(propFile)) {
	if (propStr == null) {
	throw new RuntimeException(propFile + " cannot be loaded");
	}
	props.load(propStr);
	} catch (IOException ee) {
	throw new RuntimeException(ee);
	}

	for (Map.Entry<Object, Object> e : props.entrySet()) {
	String key = (String) e.getKey();
	String val = (String) e.getValue();
	if (key.startsWith("attribute.")) {
	e.setValue(Attribute.normalizeLayoutString(val));
	}
	}

	@SuppressWarnings({"unchecked", "rawtypes"})
	HashMap<String, String> temp = new HashMap(props); // shrink to fit
	defaultProps = temp;
	}

	PropMap() {
	theMap.putAll(defaultProps);
	}

	// Return a view of this map which includes only properties
	// that begin with the given prefix. This is easy because
	// the map is sorted, and has a subMap accessor.
	SortedMap<String, String> prefixMap(String prefix) {
	int len = prefix.length();
	if (len == 0)
	return this;
	char nextch = (char)(prefix.charAt(len-1) + 1);
	String limit = prefix.substring(0, len-1)+nextch;
	//System.out.println(prefix+" => "+subMap(prefix, limit));
	return subMap(prefix, limit);
	}

	String getProperty(String s) {
	return get(s);
	}
	String getProperty(String s, String defaultVal) {
	String val = getProperty(s);
	if (val == null)
	return defaultVal;
	return val;
	}
	String setProperty(String s, String val) {
	return put(s, val);
	}

	// Get sequence of props for "prefix", and "prefix.*".
	List<String> getProperties(String prefix) {
	Collection<String> values = prefixMap(prefix).values();
	List<String> res = new ArrayList<>(values.size());
	res.addAll(values);
	while (res.remove(null));
	return res;
	}

	private boolean toBoolean(String val) {
	return Boolean.valueOf(val).booleanValue();
	}
	boolean getBoolean(String s) {
	return toBoolean(getProperty(s));
	}
	boolean setBoolean(String s, boolean val) {
	return toBoolean(setProperty(s, String.valueOf(val)));
	}
	int toInteger(String val) {
	return toInteger(val, 0);
	}
	int toInteger(String val, int def) {
	if (val == null) return def;
	if (Pack200.Packer.TRUE.equals(val)) return 1;
	if (Pack200.Packer.FALSE.equals(val)) return 0;
	return Integer.parseInt(val);
	}
	int getInteger(String s, int def) {
	return toInteger(getProperty(s), def);
	}
	int getInteger(String s) {
	return toInteger(getProperty(s));
	}
	int setInteger(String s, int val) {
	return toInteger(setProperty(s, String.valueOf(val)));
	}

	long toLong(String val) {
	try {
	return val == null ? 0 : Long.parseLong(val);
	} catch (java.lang.NumberFormatException nfe) {
	throw new IllegalArgumentException("Invalid value");
	}
	}
	long getLong(String s) {
	return toLong(getProperty(s));
	}
	long setLong(String s, long val) {
	return toLong(setProperty(s, String.valueOf(val)));
	}

	int getTime(String s) {
	String sval = getProperty(s, "0");
	if (Utils.NOW.equals(sval)) {
	return (int)((System.currentTimeMillis()+500)/1000);
	}
	long lval = toLong(sval);
	final long recentSecondCount = 1000000000;

	if (lval < recentSecondCount*10 && !"0".equals(sval))
	Utils.log.warning("Supplied modtime appears to be seconds rather than milliseconds: "+sval);

	return (int)((lval+500)/1000);
	}

	void list(PrintStream out) {
	PrintWriter outw = new PrintWriter(out);
	list(outw);
	outw.flush();
	}
	void list(PrintWriter out) {
	out.println("#"+Utils.PACK_ZIP_ARCHIVE_MARKER_COMMENT+"[");
	Set<Map.Entry<String, String>> defaults = defaultProps.entrySet();
	for (Map.Entry<String, String> e : theMap.entrySet()) {
	if (defaults.contains(e)) continue;
	out.println(" " + e.getKey() + " = " + e.getValue());
	}
	out.println("#]");
	}

	@Override
	public int size() {
	return theMap.size();
	}

	@Override
	public boolean isEmpty() {
	return theMap.isEmpty();
	}

	@Override
	public boolean containsKey(Object key) {
	return theMap.containsKey(key);
	}

	@Override
	public boolean containsValue(Object value) {
	return theMap.containsValue(value);
	}

	@Override
	public String get(Object key) {
	return theMap.get(key);
	}

	@Override
	public String remove(Object key) {
	return theMap.remove(key);
	}

	@Override
	public void putAll(Map<? extends String, ? extends String> m) {
	theMap.putAll(m);
	}

	@Override
	public void clear() {
	theMap.clear();
	}

	@Override
	public Set<String> keySet() {
	return theMap.keySet();
	}

	@Override
	public Collection<String> values() {
	return theMap.values();
	}

	@Override
	public Set<Map.Entry<String, String>> entrySet() {
	return theMap.entrySet();
	}

	@Override
	public Comparator<? super String> comparator() {
	return theMap.comparator();
	}

	@Override
	public SortedMap<String, String> subMap(String fromKey, String toKey) {
	return theMap.subMap(fromKey, toKey);
	}

	@Override
	public SortedMap<String, String> headMap(String toKey) {
	return theMap.headMap(toKey);
	}

	@Override
	public SortedMap<String, String> tailMap(String fromKey) {
	return theMap.tailMap(fromKey);
	}

	@Override
	public String firstKey() {
	return theMap.firstKey();
	}

	@Override
	public String lastKey() {
	return theMap.lastKey();
	}

	/**
	* A class that provides access to the java.beans.PropertyChangeListener
	* and java.beans.PropertyChangeEvent without creating a static dependency
	* on java.beans. This class can be removed once the addPropertyChangeListener
	* and removePropertyChangeListener methods are removed from Packer and
	* Unpacker.
	*/
	private static class Beans {
	private static final Class<?> propertyChangeListenerClass =
	getClass("java.beans.PropertyChangeListener");

	private static final Class<?> propertyChangeEventClass =
	getClass("java.beans.PropertyChangeEvent");

	private static final Method propertyChangeMethod =
	getMethod(propertyChangeListenerClass,
	"propertyChange",
	propertyChangeEventClass);

	private static final Constructor<?> propertyEventCtor =
	getConstructor(propertyChangeEventClass,
	Object.class,
	String.class,
	Object.class,
	Object.class);

	private static Class<?> getClass(String name) {
	try {
	return Class.forName(name, true, Beans.class.getClassLoader());
	} catch (ClassNotFoundException e) {
	return null;
	}
	}
	private static Constructor<?> getConstructor(Class<?> c, Class<?>... types) {
	try {
	return (c == null) ? null : c.getDeclaredConstructor(types);
	} catch (NoSuchMethodException x) {
	throw new AssertionError(x);
	}
	}

	private static Method getMethod(Class<?> c, String name, Class<?>... types) {
	try {
	return (c == null) ? null : c.getMethod(name, types);
	} catch (NoSuchMethodException e) {
	throw new AssertionError(e);
	}
	}

	/**
	* Returns {@code true} if java.beans is present.
	*/
	static boolean isBeansPresent() {
	return propertyChangeListenerClass != null &&
	propertyChangeEventClass != null;
	}

	/**
	* Returns {@code true} if the given object is a PropertyChangeListener
	*/
	static boolean isPropertyChangeListener(Object obj) {
	if (propertyChangeListenerClass == null) {
	return false;
	} else {
	return propertyChangeListenerClass.isInstance(obj);
	}
	}

	/**
	* Returns a new PropertyChangeEvent with the given source, property
	* name, old and new values.
	*/
	static Object newPropertyChangeEvent(Object source, String prop,
	Object oldValue, Object newValue)
	{
	try {
	return propertyEventCtor.newInstance(source, prop, oldValue, newValue);
	} catch (InstantiationException \| IllegalAccessException x) {
	throw new AssertionError(x);
	} catch (InvocationTargetException x) {
	Throwable cause = x.getCause();
	if (cause instanceof Error)
	throw (Error)cause;
	if (cause instanceof RuntimeException)
	throw (RuntimeException)cause;
	throw new AssertionError(x);
	}
	}

	/**
	* Invokes the given PropertyChangeListener's propertyChange method
	* with the given event.
	*/
	static void invokePropertyChange(Object listener, Object ev) {
	try {
	propertyChangeMethod.invoke(listener, ev);
	} catch (IllegalAccessException x) {
	throw new AssertionError(x);
	} catch (InvocationTargetException x) {
	Throwable cause = x.getCause();
	if (cause instanceof Error)
	throw (Error)cause;
	if (cause instanceof RuntimeException)
	throw (RuntimeException)cause;
	throw new AssertionError(x);
	}
	}
	}
	}

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