Examples of org.apache.commons.collections.ArrayStack

org.apache.commons.collections.ArrayStack
An implementation of the {@link java.util.Stack} API that is based on anArrayList instead of a Vector, so it is not synchronized to protect against multi-threaded access. The implementation is therefore operates faster in environments where you do not need to worry about multiple thread contention. @author Craig R. McClanahan @version $Revision: 1.3 $ $Date: 2001/05/04 16:33:18 $ @see java.util.Stack

     *
     * @param prefix Prefix to look up
     */
    public String findNamespaceURI(String prefix) {
        
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return (null);
        }
        try {
            return ((String) stack.peek());
        } catch (EmptyStackException e) {
            return (null);
        }


    }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("endPrefixMapping(" + prefix + ")");
        }


        // Deregister this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            return;
        }
        try {
            stack.pop();
            if (stack.empty())
                namespaces.remove(prefix);
        } catch (EmptyStackException e) {
            throw createSAXException("endPrefixMapping popped too many times");
        }

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        if (saxLog.isDebugEnabled()) {
            saxLog.debug("startPrefixMapping(" + prefix + "," + namespaceURI + ")");
        }


        // Register this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            stack = new ArrayStack();
            namespaces.put(prefix, stack);
        }
        stack.push(namespaceURI);


    }

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     */
    public synchronized File getBaseDirRelative() {
        // Must first convert to absolute path names to ensure parents are available
        File parent = new File(DEFAULT_BASE).getAbsoluteFile();
        File f = base.getAbsoluteFile();
        ArrayStack l = new ArrayStack();
        while (f != null) { 
            if (f.equals(parent)){
                if (l.isEmpty()){
                    break;
                }
                File rel = new File((String) l.pop());
                while(!l.isEmpty()) {
                    rel = new File(rel, (String) l.pop());
                }
                return rel;
            }
            l.push(f.getName());
            f = f.getParentFile(); 
        }
        return new File(".");
    }

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            throw new InternalError();
    }
  }


  public Stack() {
        stack = new ArrayStack();
        ph = new PrintHelper();
    }

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     */
    public synchronized File getBaseDirRelative() {
        // Must first convert to absolute path names to ensure parents are available
        File parent = new File(DEFAULT_BASE).getAbsoluteFile();
        File f = base.getAbsoluteFile();
        ArrayStack l = new ArrayStack();
        while (f != null) { 
            if (f.equals(parent)){
                if (l.isEmpty()){
                    break;
                }
                File rel = new File((String) l.pop());
                while(!l.isEmpty()) {
                    rel = new File(rel, (String) l.pop());
                }
                return rel;
            }
            l.push(f.getName());
            f = f.getParentFile(); 
        }
        return new File(".");
    }

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     *
     * @param prefix Prefix to look up
     */
    public String findNamespaceURI(String prefix) {


        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null)
            return (null);
        try {
            return ((String) stack.peek());
        } catch (EmptyStackException e) {
            return (null);
        }


    }

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        if (debug >= 3)
            log("endPrefixMapping(" + prefix + ")");


        // Deregister this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null)
            return;
        try {
            stack.pop();
            if (stack.empty())
                namespaces.remove(prefix);
        } catch (EmptyStackException e) {
            throw createSAXException("endPrefixMapping popped too many times");
        }

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        if (debug >= 3)
            log("startPrefixMapping(" + prefix + "," + namespaceURI + ")");


        // Register this prefix mapping
        ArrayStack stack = (ArrayStack) namespaces.get(prefix);
        if (stack == null) {
            stack = new ArrayStack();
            namespaces.put(prefix, stack);
        }
        stack.push(namespaceURI);


    }

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     */
    public synchronized File getBaseDirRelative() {
        // Must first convert to absolute path names to ensure parents are available
        File parent = new File(DEFAULT_BASE).getAbsoluteFile();
        File f = base.getAbsoluteFile();
        ArrayStack l = new ArrayStack();
        while (f != null) { 
            if (f.equals(parent)){
                if (l.isEmpty()){
                    break;
                }
                File rel = new File((String) l.pop());
                while(!l.isEmpty()) {
                    rel = new File(rel, (String) l.pop());
                }
                return rel;
            }
            l.push(f.getName());
            f = f.getParentFile(); 
        }
        return new File(".");
    }

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