Buffer.java: Implemented.
2002-11-13 Michael Koch <konqueror@gmx.de> * java/nio/Buffer.java: Implemented. * java/nio/CharBuffer.java: New file. * java/nio/InvalidMarkException.java: New file. * java/nio/channels/DatagramChannel.java: Implemented. * java/nio/channels/ServerSocketChannel.java: Implemented. * java/nio/channels/SocketChannel.java: Implemented. * java/nio/channels/spi/AbstractChannel.java: Removed. * java/nio/channels/spi/AbstractSelectableChannel.java: Implemented. * java/nio/charset/Charset.java: Merge from Classpath. * java/nio/charset/CharsetDecoder.java: New file. * java/nio/charset/CharsetEncoder.java: New file. * java/nio/charset/CoderResult.java: New file. * Makefile.am (ordinary_java_source_files): Added new files. * Makefile.in: Regenerated. From-SVN: r59075
This commit is contained in:
Michael Koch
committed by
Michael Koch
Michael Koch
parent
7b53becc10
commit
93f93f9f28
@@ -37,54 +37,215 @@ exception statement from your version. */
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package java.nio.charset;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.spi.CharsetProvider;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.Locale;
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import java.util.Set;
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import java.util.SortedMap;
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import java.util.TreeMap;
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import gnu.java.nio.charset.Provider;
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import java.nio.*;
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public class Charset
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{
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public static Charset forName(String name)
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{
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return new Charset();
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}
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/*
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public CharsetDecoder newDecoder()
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{
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return new CharsetDecoder(this,2,2)
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{
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protected CoderResult decodeLoop(ByteBuffer in,
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CharBuffer out)
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{
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while (in.hasRemaining())
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{
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char a = (char) in.get();
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out.put(a);
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}
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return null;
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}
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};
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}
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public CharsetEncoder newEncoder()
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{
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return new CharsetEncoder(this,2,2)
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{
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protected CoderResult encodeLoop(CharBuffer in,
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ByteBuffer out)
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{
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//System.out.println("in encode loop:"+in.hasRemaining());
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while (in.hasRemaining())
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{
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char a = in.get();
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out.put((byte)a);
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//int len = out.position();
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//System.out.println("pos="+len + ","+a);
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}
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return null;
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}
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};
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}
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/**
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* @author Jesse Rosenstock
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* @since 1.4
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*/
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public abstract class Charset implements Comparable
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{
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private final String canonicalName;
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private final String[] aliases;
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protected Charset (String canonicalName, String[] aliases)
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{
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checkName (canonicalName);
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if (aliases != null)
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{
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int n = aliases.length;
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for (int i = 0; i < n; ++i)
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checkName (aliases[i]);
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}
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this.canonicalName = canonicalName;
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this.aliases = aliases;
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}
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/**
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* @throws IllegalCharsetNameException if the name is illegal
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*/
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private static void checkName (String name)
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{
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int n = name.length ();
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if (n == 0)
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throw new IllegalCharsetNameException (name);
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char ch = name.charAt (0);
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if (!(('A' <= ch && ch <= 'Z')
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|| ('a' <= ch && ch <= 'z')
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|| ('0' <= ch && ch <= '9')))
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throw new IllegalCharsetNameException (name);
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for (int i = 1; i < n; ++i)
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{
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ch = name.charAt (i);
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if (!(('A' <= ch && ch <= 'Z')
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|| ('a' <= ch && ch <= 'z')
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|| ('0' <= ch && ch <= '9')
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|| ch == '-' || ch == '.' || ch == ':' || ch == '_'))
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throw new IllegalCharsetNameException (name);
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}
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}
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public static boolean isSupported (String charsetName)
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{
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return charsetForName (charsetName) != null;
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}
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public static Charset forName (String charsetName)
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{
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Charset cs = charsetForName (charsetName);
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if (cs == null)
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throw new UnsupportedCharsetException (charsetName);
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return cs;
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}
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/**
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* Retrieves a charset for the given charset name.
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*
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* @return A charset object for the charset with the specified name, or
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* <code>null</code> if no such charset exists.
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*
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* @throws IllegalCharsetNameException if the name is illegal
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*/
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private static Charset charsetForName (String charsetName)
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{
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checkName (charsetName);
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return provider ().charsetForName (charsetName);
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}
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public static SortedMap availableCharsets ()
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{
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TreeMap charsets = new TreeMap (String.CASE_INSENSITIVE_ORDER);
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for (Iterator i = provider ().charsets (); i.hasNext (); )
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{
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Charset cs = (Charset) i.next ();
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charsets.put (cs.name (), cs);
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}
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return Collections.unmodifiableSortedMap (charsets);
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}
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// XXX: we need to support multiple providers, reading them from
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// java.nio.charset.spi.CharsetProvider in the resource directory
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// META-INF/services
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private static final CharsetProvider provider ()
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{
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return Provider.provider ();
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}
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public final String name ()
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{
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return canonicalName;
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}
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public final Set aliases ()
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{
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if (aliases == null)
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return Collections.EMPTY_SET;
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// should we cache the aliasSet instead?
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int n = aliases.length;
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HashSet aliasSet = new HashSet (n);
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for (int i = 0; i < n; ++i)
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aliasSet.add (aliases[i]);
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return Collections.unmodifiableSet (aliasSet);
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}
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public String displayName ()
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{
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return canonicalName;
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}
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public String displayName (Locale locale)
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{
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return canonicalName;
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}
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public final boolean isRegistered (String name)
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{
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return !name.startsWith ("x-") && !name.startsWith ("X-");
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}
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public abstract boolean contains (Charset cs);
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public abstract CharsetDecoder newDecoder ();
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public abstract CharsetEncoder newEncoder ();
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public boolean canEncode ()
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{
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return true;
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}
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public final ByteBuffer encode (CharBuffer cb)
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{
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try
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{
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// TODO: cache encoders between sucessive invocations
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return newEncoder ().onMalformedInput (CodingErrorAction.REPLACE)
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.onUnmappableCharacter (CodingErrorAction.REPLACE)
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.encode (cb);
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}
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catch (CharacterCodingException e)
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{
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throw new AssertionError (e);
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}
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}
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public final ByteBuffer encode (String str)
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{
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return encode (CharBuffer.wrap (str));
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}
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public CharBuffer decode (ByteBuffer bb)
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{
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try
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{
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// TODO: cache encoders between sucessive invocations
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return newDecoder ().onMalformedInput (CodingErrorAction.REPLACE)
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.onUnmappableCharacter (CodingErrorAction.REPLACE)
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.decode (bb);
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}
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catch (CharacterCodingException e)
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{
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throw new AssertionError (e);
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}
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}
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public final int compareTo (Object ob)
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{
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return canonicalName.compareToIgnoreCase (((Charset) ob).canonicalName);
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}
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public final int hashCode ()
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{
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return canonicalName.hashCode ();
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}
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public final boolean equals (Object ob)
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{
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if (ob instanceof Charset)
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return canonicalName.equalsIgnoreCase (((Charset) ob).canonicalName);
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else
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return false;
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}
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public final String toString ()
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{
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return canonicalName;
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}
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}
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