elemnumber.java

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/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999 The Apache Software Foundation.  All rights 
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:  
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xalan" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written 
 *    permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, Lotus
 * Development Corporation., http://www.lotus.com.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.xalan.templates;

import org.apache.xml.utils.res.XResourceBundle;

//import org.w3c.dom.*;
//import org.w3c.dom.traversal.NodeIterator;
import org.apache.xml.dtm.DTM;
import org.apache.xml.dtm.DTMIterator;

import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
//import org.w3c.dom.xpath.XPathResult;
import org.xml.sax.*;

import java.util.*;

import java.text.DecimalFormatSymbols;
import java.text.NumberFormat;
import java.text.DecimalFormat;

import org.apache.xpath.*;
import org.apache.xpath.objects.XObject;
import org.apache.xpath.compiler.XPathParser;
import org.apache.xml.utils.PrefixResolver;
import org.apache.xml.utils.PrefixResolverDefault;
import org.apache.xml.utils.QName;
import org.apache.xml.utils.StringBufferPool;
import org.apache.xml.utils.FastStringBuffer;
import org.apache.xalan.res.*;
import org.apache.xalan.transformer.DecimalToRoman;
import org.apache.xalan.transformer.CountersTable;
import org.apache.xalan.transformer.ResultTreeHandler;
import org.apache.xalan.transformer.TransformerImpl;
import org.apache.xml.utils.NodeVector;

import javax.xml.transform.TransformerException;

// import org.apache.xalan.dtm.*;

/**
 * <meta name="usage" content="advanced"/>
 * Implement xsl:number.
 * <pre>
 * <!ELEMENT xsl:number EMPTY>
 * <!ATTLIST xsl:number
 *    level (single|multiple|any) "single"
 *    count %pattern; #IMPLIED
 *    from %pattern; #IMPLIED
 *    value %expr; #IMPLIED
 *    format %avt; '1'
 *    lang %avt; #IMPLIED
 *    letter-value %avt; #IMPLIED
 *    grouping-separator %avt; #IMPLIED
 *    grouping-size %avt; #IMPLIED
 * >
 * </pre>
 * @see <a href="http://www.w3.org/TR/xslt#number">number in XSLT Specification</a>
 */
public class ElemNumber extends ElemTemplateElement 
{

    private class MyPrefixResolver implements PrefixResolver {
        
        DTM dtm;
        int handle;
        boolean handleNullPrefix;
        
		/**
		 * Constructor for MyPrefixResolver.
		 * @param xpathExpressionContext
		 */
		public MyPrefixResolver(Node xpathExpressionContext, DTM dtm, int handle, boolean handleNullPrefix) {
            this.dtm = dtm;
            this.handle = handle;
            this.handleNullPrefix = handleNullPrefix;
		}

    	/**
		 * @see PrefixResolver#getNamespaceForPrefix(String, Node)
		 */
		public String getNamespaceForPrefix(String prefix) {
            return dtm.getNamespaceURI(handle);
		}
        
        /**
         * @see PrefixResolver#getNamespaceForPrefix(String, Node)
         * this shouldn't get called.
         */
        public String getNamespaceForPrefix(String prefix, Node context) {
            return getNamespaceForPrefix(prefix);
        }

		/**
		 * @see PrefixResolver#getBaseIdentifier()
		 */
		public String getBaseIdentifier() {
			return ElemNumber.this.getBaseIdentifier();
		}

		/**
		 * @see PrefixResolver#handlesNullPrefixes()
		 */
		public boolean handlesNullPrefixes() {
			return handleNullPrefix;
		}

}
    
  /**
   * Only nodes are counted that match this pattern.
   * @serial
   */
  private XPath m_countMatchPattern = null;

  /**
   * Set the "count" attribute.
   * The count attribute is a pattern that specifies what nodes
   * should be counted at those levels. If count attribute is not
   * specified, then it defaults to the pattern that matches any
   * node with the same node type as the current node and, if the
   * current node has an expanded-name, with the same expanded-name
   * as the current node.
   *
   * @param v Value to set for "count" attribute. 
   */
  public void setCount(XPath v)
  {
    m_countMatchPattern = v;
  }

  /**
   * Get the "count" attribute.
   * The count attribute is a pattern that specifies what nodes
   * should be counted at those levels. If count attribute is not
   * specified, then it defaults to the pattern that matches any
   * node with the same node type as the current node and, if the
   * current node has an expanded-name, with the same expanded-name
   * as the current node.
   *
   * @return Value of "count" attribute.
   */
  public XPath getCount()
  {
    return m_countMatchPattern;
  }

  /**
   * Specifies where to count from.
   * For level="single" or level="multiple":
   * Only ancestors that are searched are
   * those that are descendants of the nearest ancestor that matches
   * the from pattern.
   * For level="any:
   * Only nodes after the first node before the
   * current node that match the from pattern are considered.
   * @serial
   */
  private XPath m_fromMatchPattern = null;

  /**
   * Set the "from" attribute. Specifies where to count from.
   * For level="single" or level="multiple":
   * Only ancestors that are searched are
   * those that are descendants of the nearest ancestor that matches
   * the from pattern.
   * For level="any:
   * Only nodes after the first node before the
   * current node that match the from pattern are considered.
   *
   * @param v Value to set for "from" attribute.
   */
  public void setFrom(XPath v)
  {
    m_fromMatchPattern = v;
  }

  /**
   * Get the "from" attribute.
   * For level="single" or level="multiple":
   * Only ancestors that are searched are
   * those that are descendants of the nearest ancestor that matches
   * the from pattern.
   * For level="any:
   * Only nodes after the first node before the
   * current node that match the from pattern are considered.
   *
   * @return Value of "from" attribute.
   */
  public XPath getFrom()
  {
    return m_fromMatchPattern;
  }

  /**
   * When level="single", it goes up to the first node in the ancestor-or-self axis
   * that matches the count pattern, and constructs a list of length one containing
   * one plus the number of preceding siblings of that ancestor that match the count
   * pattern. If there is no such ancestor, it constructs an empty list. If the from
   * attribute is specified, then the only ancestors that are searched are those
   * that are descendants of the nearest ancestor that matches the from pattern.
   * Preceding siblings has the same meaning here as with the preceding-sibling axis.
   *
   * When level="multiple", it constructs a list of all ancestors of the current node
   * in document order followed by the element itself; it then selects from the list
   * those nodes that match the count pattern; it then maps each node in the list to
   * one plus the number of preceding siblings of that node that match the count pattern.
   * If the from attribute is specified, then the only ancestors that are searched are
   * those that are descendants of the nearest ancestor that matches the from pattern.
   * Preceding siblings has the same meaning here as with the preceding-sibling axis.
   *
   * When level="any", it constructs a list of length one containing the number of
   * nodes that match the count pattern and belong to the set containing the current
   * node and all nodes at any level of the document that are before the current node
   * in document order, excluding any namespace and attribute nodes (in other words
   * the union of the members of the preceding and ancestor-or-self axes). If the
   * from attribute is specified, then only nodes after the first node before the
   * current node that match the from pattern are considered.
   * @serial
   */
  private int m_level = Constants.NUMBERLEVEL_SINGLE;

  /**
   * Set the "level" attribute.
   * The level attribute specifies what levels of the source tree should
   * be considered; it has the values single, multiple or any. The default
   * is single.
   *
   * @param v Value to set for "level" attribute.
   */
  public void setLevel(int v)
  {
    m_level = v;
  }

  /**
   * Get the "level" attribute.
   * The level attribute specifies what levels of the source tree should
   * be considered; it has the values single, multiple or any. The default
   * is single.
   *
   * @return Value of "level" attribute.
   */
  public int getLevel()
  {
    return m_level;
  }

  /**
   * The value attribute contains an expression. The expression is evaluated
   * and the resulting object is converted to a number as if by a call to the
   * number function.
   * @serial
   */
  private XPath m_valueExpr = null;

  /**
   * Set the "value" attribute.
   * The value attribute contains an expression. The expression is evaluated
   * and the resulting object is converted to a number as if by a call to the
   * number function.
   *
   * @param v Value to set for "value" attribute.
   */
  public void setValue(XPath v)
  {
    m_valueExpr = v;
  }

  /**
   * Get the "value" attribute.
   * The value attribute contains an expression. The expression is evaluated
   * and the resulting object is converted to a number as if by a call to the
   * number function.
   *
   * @return Value of "value" attribute.
   */
  public XPath getValue()
  {
    return m_valueExpr;
  }

  /**
   * The "format" attribute is used to control conversion of a list of
   * numbers into a string.
   * @see <a href="http://www.w3.org/TR/xslt#convert">convert in XSLT Specification</a>
   * @serial
   */
  private AVT m_format_avt = null;

  /**
   * Set the "format" attribute.
   * The "format" attribute is used to control conversion of a list of
   * numbers into a string.
   * @see <a href="http://www.w3.org/TR/xslt#convert">convert in XSLT Specification</a>
   *
   * @param v Value to set for "format" attribute.
   */
  public void setFormat(AVT v)
  {
    m_format_avt = v;
  }

  /**
   * Get the "format" attribute.
   * The "format" attribute is used to control conversion of a list of
   * numbers into a string.
   * @see <a href="http://www.w3.org/TR/xslt#convert">convert in XSLT Specification</a>
   *
   * @return Value of "format" attribute.
   */
  public AVT getFormat()
  {
    return m_format_avt;
  }

  /**
   * When numbering with an alphabetic sequence, the lang attribute
   * specifies which language's alphabet is to be used.
   * @serial
   */
  private AVT m_lang_avt = null;

  /**
   * Set the "lang" attribute.
   * When numbering with an alphabetic sequence, the lang attribute
   * specifies which language's alphabet is to be used; it has the same
   * range of values as xml:lang [XML]; if no lang value is specified,
   * the language should be determined from the system environment.
   * Implementers should document for which languages they support numbering.
   * @see <a href="http://www.w3.org/TR/xslt#convert">convert in XSLT Specification</a>
   *
   * @param v Value to set for "lang" attribute.
   */
  public void setLang(AVT v)
  {
    m_lang_avt = v;
  }