| /* Properties.java -- |
| Copyright (C) 2003, 2006 Free Software Foundation, Inc. |
| |
| This file is a part of GNU Classpath. |
| |
| GNU Classpath 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 2 of the License, or (at |
| your option) any later version. |
| |
| GNU Classpath 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 GNU Classpath; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 |
| USA |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.crypto.keyring; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /** |
| * A set of <code>(name => value)</code> pairs used in keyring entries. |
| * Keys and values are simple strings, with the key never being empty and always |
| * treated case-insensitively. |
| */ |
| public class Properties |
| implements Cloneable |
| { |
| private HashMap props; |
| |
| /** |
| * Creates a new properties object. |
| */ |
| public Properties() |
| { |
| props = new HashMap(); |
| } |
| |
| /** |
| * Removes all properties from this object. |
| */ |
| public void clear() |
| { |
| props.clear(); |
| } |
| |
| /** |
| * Creates a copy of this properties object. |
| * |
| * @return The copy. |
| */ |
| public Object clone() |
| { |
| Properties result = new Properties(); |
| result.props.putAll(props); |
| return result; |
| } |
| |
| /** |
| * Tests if this object contains a given property name. |
| * |
| * @param key The key to test. |
| * @return True if this object contains the given key. |
| */ |
| public boolean containsKey(String key) |
| { |
| if (key == null || key.length() == 0) |
| return false; |
| return props.containsKey(canonicalize(key)); |
| } |
| |
| /** |
| * Tests if this object contains a given property value. |
| * |
| * @param value The value to test. |
| * @return True if this object contains the given value. |
| */ |
| public boolean containsValue(String value) |
| { |
| if (value == null) |
| return false; |
| return props.containsValue(value); |
| } |
| |
| /** |
| * Adds a new property to this object. |
| * |
| * @param key The key, which can neither be null nor empty. |
| * @param value The value, which cannot be null. |
| * @return The old value mapped by the key, if any. |
| * @throws IllegalArgumentException If either the key or value parameter is |
| * null, or if the key is empty. |
| */ |
| public String put(String key, String value) |
| { |
| if (key == null || value == null || key.length() == 0) |
| throw new IllegalArgumentException("key nor value can be null"); |
| return (String) props.put(canonicalize(key), value); |
| } |
| |
| /** |
| * Returns the value mapped by the given key, or null if there is no such |
| * mapping. |
| * |
| * @param key |
| */ |
| public String get(String key) |
| { |
| if (key == null || key.length() == 0) |
| return null; |
| return (String) props.get(canonicalize(key)); |
| } |
| |
| /** |
| * Removes a key and its value from this object. |
| * |
| * @param key The key of the property to remove. |
| * @return The old value mapped by the key, if any. |
| */ |
| public String remove(String key) |
| { |
| if (key == null || key.length() == 0) |
| return null; |
| return (String) props.remove(canonicalize(key)); |
| } |
| |
| /** |
| * Decodes a set of properties from the given input stream. |
| * |
| * @param in The input stream. |
| * @throws IOException If an I/O error occurs. |
| */ |
| public void decode(DataInputStream in) throws IOException |
| { |
| int len = in.readInt(); |
| MeteredInputStream min = new MeteredInputStream(in, len); |
| DataInputStream in2 = new DataInputStream(min); |
| while (! min.limitReached()) |
| { |
| String name = in2.readUTF(); |
| String value = in2.readUTF(); |
| put(name, value); |
| } |
| } |
| |
| /** |
| * Encodes this set of properties to the given output stream. |
| * |
| * @param out The output stream to encode to. |
| * @throws IOException If an I/O error occurs. |
| */ |
| public void encode(DataOutputStream out) throws IOException |
| { |
| ByteArrayOutputStream buf = new ByteArrayOutputStream(); |
| DataOutputStream out2 = new DataOutputStream(buf); |
| for (Iterator it = props.entrySet().iterator(); it.hasNext();) |
| { |
| Map.Entry entry = (Map.Entry) it.next(); |
| out2.writeUTF((String) entry.getKey()); |
| out2.writeUTF((String) entry.getValue()); |
| } |
| out.writeInt(buf.size()); |
| buf.writeTo(out); |
| } |
| |
| public String toString() |
| { |
| return props.toString(); |
| } |
| |
| private String canonicalize(String key) |
| { |
| return key.toLowerCase(); |
| } |
| } |