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authorBenjamin Culkin <scorpress@gmail.com>2024-05-19 17:56:33 -0400
committerBenjamin Culkin <scorpress@gmail.com>2024-05-19 17:56:33 -0400
commitaedc34d55462a75e329bbf342251ff6504cd117e (patch)
treebcc8f1f2352582717b484df302aeea6696b8f000 /projects/net.wotonomy.foundation/src/main/java/net/wotonomy/foundation/NSDictionary.java
Initial import from SVN
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+/*
+Wotonomy: OpenStep design patterns for pure Java applications.
+Copyright (C) 2000 Blacksmith, Inc.
+
+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, see http://www.gnu.org
+*/
+
+package net.wotonomy.foundation;
+
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+* A pure java implementation of NSDictionary that
+* implements Map for greater java interoperability.
+*
+* @author michael@mpowers.net
+* @author cgruber@israfil.net
+* @author $Author: cgruber $
+* @version $Revision: 893 $
+*/
+public class NSDictionary extends HashMap implements NSKeyValueCoding
+{
+ public static final NSDictionary EmptyDictionary = new NSDictionary();
+
+ /**
+ * Default constructor produces an empty dictionary.
+ */
+ public NSDictionary ()
+ {
+ super();
+ }
+
+ /**
+ * Constructor produces an empty dictionary with an initial capacity.
+ */
+ public NSDictionary (int initialCapacity)
+ {
+ super(initialCapacity);
+ }
+
+ /**
+ * Produces a dictionary that contains one key referencing one value.
+ */
+ public NSDictionary (Object key, Object value)
+ {
+ super();
+ put( key, value );
+ }
+
+ /**
+ * Produces a dictionary containing the specified keys and values.
+ * An IllegalArgumentException is thrown if the arrays are not
+ * of the same length.
+ */
+ public NSDictionary (Object[] objects, Object[] keys)
+ {
+ super();
+ if ( keys.length != objects.length )
+ {
+ throw new IllegalArgumentException( "Array lengths do not match." );
+ }
+
+ for ( int i = 0; i < keys.length; i++ )
+ {
+ put( keys[i], objects[i] );
+ }
+ }
+
+ /**
+ * Produces a dictionary that is a copy of the specified map (or dictionary).
+ */
+ public NSDictionary (Map aMap)
+ {
+ super( aMap );
+ }
+
+ /**
+ * Returns a count of the key-value pairs in this dictionary.
+ */
+ public int count ()
+ {
+ return size();
+ }
+
+ /**
+ * Returns an NSArray containing all keys in this dictionary.
+ */
+ public NSArray allKeys ()
+ {
+ return new NSArray( keySet() );
+
+ }
+
+ /**
+ * Returns an NSArray containing all keys that reference the
+ * specified value.
+ */
+ public NSArray allKeysForObject (Object value)
+ {
+ NSMutableArray result = new NSMutableArray();
+ Map.Entry entry;
+ Iterator it = entrySet().iterator();
+
+ while ( it.hasNext() )
+ {
+ entry = (Map.Entry) it.next();
+
+ // handle null values
+ if ( ( value == null ) && ( entry.getValue() == null )
+ || ( value.equals( entry.getValue() ) ) )
+ {
+ // if match, add to result set
+ result.addObject( entry.getKey() );
+ }
+ }
+
+ return result;
+ }
+
+ /**
+ * Returns an NSArray containing all values in this dictionary.
+ */
+ public NSArray allValues ()
+ {
+ return new NSArray( values() );
+ }
+
+ /**
+ * Returns whether the specified dictionary has the same or
+ * equivalent key-value pairs as this dictionary.
+ */
+ public boolean isEqualToDictionary (NSDictionary aDictionary)
+ {
+ return equals( aDictionary );
+ }
+
+ /**
+ * Returns an array of objects for the specified array of keys.
+ * If a key isn't found, the marker parameter will be placed
+ * in the corresponding index(es) in the returned array.
+ */
+ public NSArray objectsForKeys (NSArray anArray, Object aMarker)
+ {
+ NSMutableArray result = new NSMutableArray();
+ if ( anArray == null ) return result;
+
+ Object value;
+ Enumeration enumeration = anArray.objectEnumerator();
+ while ( enumeration.hasMoreElements() )
+ {
+ value = objectForKey( enumeration.nextElement() );
+ if ( value == null )
+ {
+ value = aMarker;
+ }
+ result.addObject( value );
+ }
+ return result;
+ }
+
+ /**
+ * Returns an enumeration over the keys in this dictionary.
+ */
+ public java.util.Enumeration keyEnumerator ()
+ {
+ return new java.util.Enumeration()
+ {
+ Iterator it = NSDictionary.this.keySet().iterator();
+ public boolean hasMoreElements()
+ {
+ return it.hasNext();
+ }
+ public Object nextElement()
+ {
+ return it.next();
+ }
+ };
+ }
+
+ /**
+ * Returns an enumeration over the values in this dictionary.
+ */
+ public java.util.Enumeration objectEnumerator ()
+ {
+ return new java.util.Enumeration()
+ {
+ Iterator it = NSDictionary.this.values().iterator();
+ public boolean hasMoreElements()
+ {
+ return it.hasNext();
+ }
+ public Object nextElement()
+ {
+ return it.next();
+ }
+ };
+ }
+
+ /**
+ * Returns the value for the specified key, or null
+ * if the key is not found.
+ */
+ public Object objectForKey (Object aKey)
+ {
+ return get( aKey );
+ }
+
+ // interface NSKeyValueCoding
+
+ public Object valueForKey (String aKey)
+ { // System.out.println( "valueForKey: " + aKey + "->" + this );
+ Object result = objectForKey( aKey );
+ if ( result == null )
+ result = NSKeyValueCodingSupport.valueForKey( this, aKey );
+ return result;
+ }
+
+ public void takeValueForKey (Object aValue, String aKey)
+ { // System.out.println( "takeValueForKey: " + aKey + " : " + aValue + "->" + this );
+ put( aKey, aValue ); //FIXME: technically cheating since this is a read-only class
+ }
+
+ public Object storedValueForKey (String aKey)
+ {
+ Object result = objectForKey( aKey );
+ if ( result == null )
+ result = NSKeyValueCodingSupport.storedValueForKey( this, aKey );
+ return result;
+ }
+
+ public void takeStoredValueForKey (Object aValue, String aKey)
+ {
+ put( aKey, aValue ); //FIXME: technically cheating since this is a read-only class
+ }
+
+ public Object handleQueryWithUnboundKey (String aKey)
+ {
+ return NSKeyValueCodingSupport.handleQueryWithUnboundKey( this, aKey );
+ }
+
+ public void handleTakeValueForUnboundKey (Object aValue, String aKey)
+ {
+ NSKeyValueCodingSupport.handleTakeValueForUnboundKey( this, aValue, aKey );
+ }
+
+ public void unableToSetNullForKey (String aKey)
+ {
+ NSKeyValueCodingSupport.unableToSetNullForKey( this, aKey );
+ }
+
+ public Object validateTakeValueForKeyPath (Object aValue, String aKey)
+ {
+ throw new RuntimeException( "Not implemented yet." );
+ }
+
+ public String toString() {
+ StringBuffer buf = new StringBuffer();
+ Enumeration enumeration = keyEnumerator();
+ boolean quote = false;
+ buf.append(NSPropertyListSerialization.TOKEN_BEGIN[NSPropertyListSerialization.PLIST_DICTIONARY]);
+ while (enumeration.hasMoreElements()) {
+ if (buf.length() == 1)
+ buf.append(' ');
+ Object k = enumeration.nextElement();
+ buf.append(NSPropertyListSerialization.stringForPropertyList(k));
+ buf.append(" = ");
+ k = objectForKey(k);
+ buf.append(NSPropertyListSerialization.stringForPropertyList(k));
+ buf.append("; ");
+ }
+ buf.append(NSPropertyListSerialization.TOKEN_END[NSPropertyListSerialization.PLIST_DICTIONARY]);
+ return buf.toString();
+ }
+
+}
+
+/*
+ * $Log$
+ * Revision 1.2 2006/02/16 13:15:00 cgruber
+ * Check in all sources in eclipse-friendly maven-enabled packages.
+ *
+ * Revision 1.9 2005/05/11 15:21:53 cgruber
+ * Change enum to enumeration, since enum is now a keyword as of Java 5.0
+ *
+ * A few other comments in the code.
+ *
+ * Revision 1.8 2003/08/05 00:50:14 chochos
+ * use NSPropertyListSerialization to get the tokens to enclose the string description
+ *
+ * Revision 1.7 2003/08/04 20:26:10 chochos
+ * use NSPropertyListSerialization inside toString()
+ *
+ * Revision 1.6 2003/08/04 18:49:38 chochos
+ * NSDictionary(Object[], Object[]) was taking the parameters in the wrong order; for compatibility with Apple's NSDictionary, objects comes first, then keys.
+ *
+ * Revision 1.5 2003/08/04 18:26:19 chochos
+ * fixed opening '{'
+ *
+ * Revision 1.4 2003/01/28 22:11:30 mpowers
+ * Now implements NSKeyValueCoding.
+ *
+ * Revision 1.3 2002/06/30 17:58:06 mpowers
+ * Add a capacity constructor and static empty dictionary: thanks cgruber.
+ *
+ * Revision 1.2 2001/02/23 23:43:41 mpowers
+ * Removed ill-advised this.
+ *
+ * Revision 1.1.1.1 2000/12/21 15:47:31 mpowers
+ * Contributing wotonomy.
+ *
+ * Revision 1.3 2000/12/20 16:25:38 michael
+ * Added log to all files.
+ *
+ *
+ */
+
+
+