mirror of git://gcc.gnu.org/git/gcc.git
337 lines
8.4 KiB
Java
337 lines
8.4 KiB
Java
/* CompositeName.java --
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Copyright (C) 2001, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.naming;
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import java.io.IOException;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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import java.util.Enumeration;
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import java.util.NoSuchElementException;
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import java.util.Vector;
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/**
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* @author Tom Tromey (tromey@redhat.com)
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*/
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public class CompositeName implements Name, Cloneable, Serializable
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{
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private static final long serialVersionUID = 1667768148915813118L;
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public CompositeName ()
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{
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elts = new Vector ();
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}
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protected CompositeName (Enumeration comps)
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{
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elts = new Vector ();
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try
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{
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while (comps.hasMoreElements ())
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elts.add (comps.nextElement ());
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}
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catch (NoSuchElementException ignore)
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{
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}
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}
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public CompositeName (String n) throws InvalidNameException
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{
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elts = new Vector ();
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// Parse the string into its components.
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final char no_quote = 'x'; // Use 'x' to mean no quoting.
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char quote = no_quote;
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boolean escaped = false;
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StringBuffer new_element = new StringBuffer ();
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for (int i = 0; i < n.length (); ++i)
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{
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char c = n.charAt (i);
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if (escaped)
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escaped = false;
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else if (c == '\\')
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{
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escaped = true;
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continue;
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}
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else if (quote != no_quote)
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{
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if (quote == c)
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{
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// The quotes must surround a complete component.
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if (i + 1 < n.length () && n.charAt (i + 1) != '/')
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throw new InvalidNameException ("close quote before end of component");
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elts.add (new_element.toString ());
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new_element.setLength (0);
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quote = no_quote;
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continue;
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}
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// Otherwise, fall through.
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}
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// Quotes are only special at the start of a component.
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else if (new_element.length () == 0
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&& (c == '\'' || c == '"'))
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{
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quote = c;
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continue;
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}
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else if (c == '/')
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{
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elts.add (new_element.toString ());
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new_element.setLength (0);
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continue;
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}
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new_element.append (c);
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}
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if (new_element.length () != 0)
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elts.add (new_element.toString ());
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// Error checking.
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if (quote != no_quote)
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throw new InvalidNameException ("unterminated quote");
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if (escaped)
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throw new InvalidNameException ("trailing escape character");
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}
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public Name add (int posn, String comp) throws InvalidNameException
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{
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elts.add (posn, comp);
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return this;
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}
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public Name add (String comp) throws InvalidNameException
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{
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elts.add (comp);
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return this;
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}
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public Name addAll (int posn, Name n) throws InvalidNameException
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{
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Enumeration e = n.getAll ();
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try
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{
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while (e.hasMoreElements ())
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{
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elts.add (posn, e.nextElement ());
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++posn;
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}
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}
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catch (NoSuchElementException ignore)
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{
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}
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return this;
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}
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public Name addAll (Name suffix) throws InvalidNameException
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{
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Enumeration e = suffix.getAll ();
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try
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{
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while (e.hasMoreElements ())
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elts.add (e.nextElement ());
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}
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catch (NoSuchElementException ignore)
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{
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}
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return this;
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}
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public Object clone ()
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{
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return new CompositeName (elts.elements ());
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}
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public int compareTo (Object obj)
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{
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if (obj == null || ! (obj instanceof CompositeName))
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throw new ClassCastException ("CompositeName.compareTo() expected CompositeName");
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CompositeName cn = (CompositeName) obj;
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int last = Math.min (cn.elts.size (), elts.size ());
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for (int i = 0; i < last; ++i)
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{
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String f = (String) elts.get (i);
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int comp = f.compareTo ((String) cn.elts.get (i));
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if (comp != 0)
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return comp;
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}
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return elts.size () - cn.elts.size ();
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}
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public boolean endsWith (Name n)
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{
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if (! (n instanceof CompositeName))
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return false;
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CompositeName cn = (CompositeName) n;
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if (cn.elts.size () > elts.size ())
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return false;
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int delta = elts.size () - cn.elts.size ();
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for (int i = 0; i < cn.elts.size (); ++i)
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{
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if (! cn.elts.get (i).equals (elts.get (delta + i)))
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return false;
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}
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return true;
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}
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public boolean equals (Object obj)
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{
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if (! (obj instanceof CompositeName))
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return false;
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CompositeName cn = (CompositeName) obj;
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return elts.equals (cn.elts);
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}
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public String get (int posn)
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{
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return (String) elts.get (posn);
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}
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public Enumeration getAll ()
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{
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return elts.elements ();
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}
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public Name getPrefix (int posn)
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{
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CompositeName cn = new CompositeName ();
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for (int i = 0; i < posn; ++i)
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cn.elts.add ((String) elts.get (i));
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return cn;
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}
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public Name getSuffix (int posn)
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{
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if (posn > elts.size ())
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throw new ArrayIndexOutOfBoundsException (posn);
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CompositeName cn = new CompositeName ();
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for (int i = posn; i < elts.size (); ++i)
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cn.elts.add ((String) elts.get (i));
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return cn;
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}
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public int hashCode ()
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{
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// Specified in documentation.
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int h = 0;
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for (int i = 0; i < elts.size (); ++i)
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h += elts.get (i).hashCode ();
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return h;
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}
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public boolean isEmpty ()
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{
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return elts.isEmpty ();
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}
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public Object remove (int posn) throws InvalidNameException
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{
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return elts.remove (posn);
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}
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public int size ()
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{
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return elts.size ();
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}
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public boolean startsWith (Name n)
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{
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if (! (n instanceof CompositeName))
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return false;
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CompositeName cn = (CompositeName) n;
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if (cn.elts.size () > elts.size ())
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return false;
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for (int i = 0; i < cn.elts.size (); ++i)
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{
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if (! cn.elts.get (i).equals (elts.get (i)))
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return false;
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}
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return true;
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}
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public String toString ()
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{
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StringBuffer result = new StringBuffer ();
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for (int i = 0; i < elts.size (); ++i)
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{
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// For simplicity we choose to always quote using escapes and
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// never quotes.
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String elt = (String) elts.get (i);
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if (i > 0
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|| (i == elts.size () - 1 && elt.equals ("")))
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result.append ('/');
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for (int k = 0; k < elt.length (); ++k)
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{
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char c = elt.charAt (k);
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// We must quote
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// ... a leading quote,
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if ((k == 0 && (c == '"' || c == '\''))
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// ... an escape preceding a meta character,
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// or at the end of a component,
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|| (c == '\\'
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&& (k == elt.length () - 1
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|| "\\'\"/".indexOf (elt.charAt (k + 1)) != -1))
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// ... or a component separator.
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|| c == '/')
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result.append ('\\');
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result.append (c);
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}
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}
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return result.toString ();
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}
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private void readObject(ObjectInputStream s)
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throws IOException, ClassNotFoundException
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{
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int size = s.readInt();
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elts = new Vector(size);
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for (int i = 0; i < size; i++)
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elts.add(s.readObject());
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}
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private void writeObject(ObjectOutputStream s) throws IOException
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{
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s.writeInt(elts.size());
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for (int i = 0; i < elts.size(); i++)
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s.writeObject(elts.get(i));
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}
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private transient Vector elts;
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}
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