+++ /dev/null
-/* Copyright (C) 2001 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package javax.naming;
-
-import java.io.Serializable;
-import java.util.Enumeration;
-import java.util.Properties;
-import java.util.NoSuchElementException;
-import java.util.Vector;
-
-/**
- * @author Tom Tromey <tromey@redhat.com>
- * @date May 16, 2001
- *
- * FIXME: must write readObject and writeObject to conform to
- * serialization spec.
- *
- * FIXME: this class is underspecified. For instance, the `flat'
- * direction is never described. If it means that the CompoundName
- * can only have a single element, then the Enumeration-based
- * constructor ought to throw InvalidNameException.
- */
-public class CompoundName implements Name, Cloneable, Serializable
-{
- private CompoundName (Properties syntax)
- {
- elts = new Vector ();
- mySyntax = syntax;
- initializeSyntax ();
- }
-
- protected CompoundName (Enumeration comps, Properties syntax)
- {
- elts = new Vector ();
- mySyntax = syntax;
- initializeSyntax ();
- try
- {
- while (comps.hasMoreElements ())
- elts.add (comps.nextElement ());
- }
- catch (NoSuchElementException ignore)
- {
- }
- }
-
- public CompoundName (String n, Properties syntax)
- throws InvalidNameException
- {
- elts = new Vector ();
- mySyntax = syntax;
- initializeSyntax ();
-
- StringBuffer new_element = new StringBuffer ();
- int i = 0;
- // QUOTE==null means no quoting right now. When it is set it is
- // the value of the closing quote.
- String quote = null;
- while (i < n.length ())
- {
- String special = isSpecial (n, i);
-
- if (special == escape && escape != null)
- {
- if (n.length () == i + special.length ())
- {
- // A trailing escape is treated as itself.
- new_element.append (special);
- i += special.length ();
- }
- else
- {
- String eSpecial = isSpecial (n, i + special.length ());
- if (eSpecial != null)
- {
- // Treat the escape as an escape.
- new_element.append (eSpecial);
- i += special.length () + eSpecial.length ();
- }
- else
- {
- // Treat the escape as itself.
- new_element.append (special);
- i += special.length ();
- }
- continue;
- }
- }
- else if (quote != null)
- {
- // It is safe to use == here.
- if (quote == special)
- {
- // Quotes must surround a complete component.
- if (i + quote.length () < n.length ()
- && ! n.startsWith (separator, i + quote.length ()))
- throw new InvalidNameException ("close quote before end of component");
- elts.add (new_element.toString ());
- new_element.setLength (0);
- i += quote.length ();
- quote = null;
- continue;
- }
- // Otherwise, fall through.
- }
- // Quotes are only special at the start of a component.
- else if (new_element.length () == 0 && special == beginQuote)
- {
- quote = endQuote;
- i += special.length ();
- continue;
- }
- else if (new_element.length () == 0 && special == beginQuote2)
- {
- quote = endQuote2;
- i += special.length ();
- continue;
- }
- else if (special == separator)
- {
- elts.add (new_element.toString ());
- new_element.setLength (0);
- i += special.length ();
- continue;
- }
-
- // Nothing in particular, so try the next character.
- new_element.append (n.charAt (i));
- ++i;
- }
-
- if (new_element.length () != 0)
- elts.add (new_element.toString ());
-
- if (direction == RIGHT_TO_LEFT)
- {
- // Reverse the order of the elements.
- int len = elts.size ();
- for (i = 0; i < len / 2; ++i)
- {
- Object t = elts.set (i, elts.get (len - i - 1));
- elts.set (len - i - 1, t);
- }
- }
-
- // Error checking.
- if (quote != null)
- throw new InvalidNameException ("unterminated quote");
- }
-
- public Name add (int posn, String comp) throws InvalidNameException
- {
- elts.add (posn, comp);
- return this;
- }
-
- public Name add (String comp) throws InvalidNameException
- {
- elts.add (comp);
- return this;
- }
-
- public Name addAll (int posn, Name n) throws InvalidNameException
- {
- Enumeration e = n.getAll ();
- try
- {
- while (e.hasMoreElements ())
- {
- elts.add (posn, e.nextElement ());
- ++posn;
- }
- }
- catch (NoSuchElementException ignore)
- {
- }
- return this;
- }
-
- public Name addAll (Name suffix) throws InvalidNameException
- {
- Enumeration e = suffix.getAll ();
- try
- {
- while (e.hasMoreElements ())
- elts.add (e.nextElement ());
- }
- catch (NoSuchElementException ignore)
- {
- }
- return this;
- }
-
- public Object clone ()
- {
- return new CompoundName (elts.elements (), mySyntax);
- }
-
- public int compareTo (Object obj)
- {
- if (obj == null || ! (obj instanceof CompoundName))
- throw new ClassCastException ("CompoundName.compareTo() expected CompoundName");
- CompoundName cn = (CompoundName) obj;
- int last = Math.min (cn.elts.size (), elts.size ());
- for (int i = 0; i < last; ++i)
- {
- String f = canonicalize ((String) elts.get (i));
- int comp = f.compareTo (canonicalize ((String) cn.elts.get (i)));
- if (comp != 0)
- return comp;
- }
- return elts.size () - cn.elts.size ();
- }
-
- public boolean endsWith (Name n)
- {
- if (! (n instanceof CompoundName))
- return false;
- CompoundName cn = (CompoundName) n;
- if (cn.elts.size () > elts.size ())
- return false;
- int delta = elts.size () - cn.elts.size ();
- for (int i = 0; i < cn.elts.size (); ++i)
- {
- String f = canonicalize ((String) elts.get (i));
- if (! f.equals (canonicalize ((String) cn.elts.get (i))))
- return false;
- }
- return true;
- }
-
- public boolean equals (Object obj)
- {
- if (! (obj instanceof CompoundName))
- return false;
- return compareTo (obj) == 0;
- }
-
- public String get (int posn)
- {
- return (String) elts.get (posn);
- }
-
- public Enumeration getAll ()
- {
- return elts.elements ();
- }
-
- public Name getPrefix (int posn)
- {
- CompoundName cn = new CompoundName (mySyntax);
- for (int i = 0; i < posn; ++i)
- cn.elts.add (elts.get (i));
- return cn;
- }
-
- public Name getSuffix (int posn)
- {
- if (posn > elts.size ())
- throw new ArrayIndexOutOfBoundsException (posn);
- CompoundName cn = new CompoundName (mySyntax);
- for (int i = posn; i < elts.size (); ++i)
- cn.elts.add (elts.get (i));
- return cn;
- }
-
- public int hashCode ()
- {
- int h = 0;
- for (int i = 0; i < elts.size (); ++i)
- h += canonicalize ((String) elts.get (i)).hashCode ();
- return h;
- }
-
- public boolean isEmpty ()
- {
- return elts.isEmpty ();
- }
-
- public Object remove (int posn) throws InvalidNameException
- {
- return elts.remove (posn);
- }
-
- public int size ()
- {
- return elts.size ();
- }
-
- public boolean startsWith (Name n)
- {
- if (! (n instanceof CompoundName))
- return false;
- CompoundName cn = (CompoundName) n;
- if (cn.elts.size () > elts.size ())
- return false;
- for (int i = 0; i < cn.elts.size (); ++i)
- {
- String f = canonicalize ((String) elts.get (i));
- if (! f.equals (canonicalize ((String) cn.elts.get (i))))
- return false;
- }
- return true;
- }
-
- // If ELEMENT starts with some meta-sequence at OFFSET, then return
- // the string representing the meta-sequence. Otherwise return
- // null.
- private String isSpecial (String element, int offset)
- {
- String special = null;
- if (separator != null && element.startsWith (separator, offset))
- special = separator;
- else if (escape != null && element.startsWith (escape, offset))
- special = escape;
- else if (beginQuote != null && element.startsWith (beginQuote, offset))
- special = beginQuote;
- else if (endQuote != null && element.startsWith (endQuote, offset))
- special = endQuote;
- else if (beginQuote2 != null
- && element.startsWith (beginQuote2, offset))
- special = beginQuote2;
- else if (endQuote2 != null && element.startsWith (endQuote2, offset))
- special = endQuote2;
-
- return special;
- }
-
- public String toString ()
- {
- StringBuffer result = new StringBuffer ();
- int size = elts.size ();
- for (int i = 0; i < size; ++i)
- {
- // Find the appropriate element. FIXME: not clear what FLAT
- // means.
- int offset = (direction == RIGHT_TO_LEFT) ? (size - i - 1) : i;
- String element = (String) elts.get (offset);
- if (i > 0
- || (i == size - 1 && element.equals ("")))
- result.append (separator);
-
- int k = 0;
- while (k < element.length ())
- {
- String special = isSpecial (element, k);
- if (special != null)
- {
- result.append (escape);
- result.append (special);
- k += special.length ();
- }
- else
- {
- result.append (element.charAt (k));
- ++k;
- }
- }
- }
-
- return result.toString ();
- }
-
- // This canonicalizes a String, based on the syntax, for comparison
- // or other similar purposes.
- private String canonicalize (String element)
- {
- String ret = element;
-
- if (ignoreCase)
- ret = ret.toLowerCase ();
-
- if (trimBlanks)
- {
- int first = 0;
- while (first < ret.length ()
- && Character.isWhitespace (ret.charAt (first)))
- ++first;
-
- int last = ret.length () - 1;
- while (last >= first
- && Character.isWhitespace (ret.charAt (last)))
- --last;
-
- ret = ret.substring (first, last);
- }
-
- return ret;
- }
-
- // This initializes all the syntax variables. This seems easier
- // than re-querying the properties every time. We're allowed to do
- // this because the spec says that subclasses should consider the
- // syntax as being read-only.
- private void initializeSyntax ()
- {
- String t = mySyntax.getProperty ("jndi.syntax.direction", "flat");
- if (t.equals ("right_to_left"))
- this.direction = RIGHT_TO_LEFT;
- else if (t.equals ("left_to_right"))
- this.direction = LEFT_TO_RIGHT;
- else
- {
- // If we don't recognize it, default to flat.
- this.direction = FLAT;
- }
-
- // This is required unless the direction is FLAT. Unfortunately
- // there is no way to report this error.
- this.separator = mySyntax.getProperty ("jndi.syntax.separator", "");
-
- this.ignoreCase
- = Boolean.valueOf (mySyntax.getProperty ("jndi.syntax.ignorecase",
- "false")).booleanValue ();
- this.escape = mySyntax.getProperty ("jndi.syntax.escape", null);
- this.beginQuote = mySyntax.getProperty ("jndi.syntax.beginquote", null);
- this.endQuote = mySyntax.getProperty ("jndi.syntax.endquote",
- this.beginQuote);
- this.beginQuote2 = mySyntax.getProperty ("jndi.syntax.beginquote2",
- null);
- this.endQuote2 = mySyntax.getProperty ("jndi.syntax.endquote2",
- this.beginQuote2);
- this.trimBlanks
- = Boolean.valueOf (mySyntax.getProperty ("jndi.syntax.trimblanks",
- "false")).booleanValue ();
- }
-
- // The spec specifies this but does not document it in any way (it
- // is a package-private class). It is useless as far as I can tell.
- // So we ignore it.
- // protected transient NameImpl impl;
- protected transient Properties mySyntax;
-
- // The actual elements.
- private transient Vector elts;
-
- // The following are all used for syntax.
- private transient int direction;
- private transient String separator;
- private transient boolean ignoreCase;
- private transient String escape;
- private transient String beginQuote;
- private transient String endQuote;
- private transient String beginQuote2;
- private transient String endQuote2;
- private transient boolean trimBlanks;
- // We didn't need these for parsing, so they are gone.
- // private transient String avaSeparator;
- // private transient String typevalSeparator;
-
- private static final int RIGHT_TO_LEFT = -1;
- private static final int LEFT_TO_RIGHT = 1;
- private static final int FLAT = 0;
-}
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