290 lines
6.4 KiB
Java
290 lines
6.4 KiB
Java
/* Copyright (C) 2001 Free Software Foundation
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This file is part of libgcj.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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package javax.naming;
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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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* @date May 16, 2001
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*
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* FIXME: must write readObject and writeObject to conform to
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* serialization spec.
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*/
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public class CompositeName implements Name, Cloneable, Serializable
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{
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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 transient Vector elts;
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}
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