--- /dev/null
+/* NodeNumberNode.java --
+ Copyright (C) 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.xml.transform;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+import javax.xml.transform.TransformerException;
+import org.w3c.dom.Node;
+import gnu.xml.xpath.Expr;
+import gnu.xml.xpath.Pattern;
+import gnu.xml.xpath.Selector;
+import gnu.xml.xpath.UnionExpr;
+
+/**
+ * A template node representing the XSL <code>number</code> instruction
+ * with no <code>value</code> expression, i.e. the value is computed from
+ * the document position of the context node.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+final class NodeNumberNode
+ extends AbstractNumberNode
+{
+
+ static final int SINGLE = 0;
+ static final int MULTIPLE = 1;
+ static final int ANY = 2;
+
+ final int level;
+ final Pattern count;
+ final Pattern from;
+
+ NodeNumberNode(int level, Pattern count, Pattern from,
+ TemplateNode format, String lang,
+ int letterValue, String groupingSeparator, int groupingSize)
+ {
+ super(format, lang, letterValue, groupingSeparator, groupingSize);
+ this.level = level;
+ this.count = count;
+ this.from = from;
+ }
+
+ TemplateNode clone(Stylesheet stylesheet)
+ {
+ TemplateNode ret = new NodeNumberNode(level,
+ (count == null) ? null :
+ (Pattern) count.clone(stylesheet),
+ (from == null) ? from :
+ (Pattern) from.clone(stylesheet),
+ format, lang, letterValue,
+ groupingSeparator, groupingSize);
+ if (children != null)
+ {
+ ret.children = children.clone(stylesheet);
+ }
+ if (next != null)
+ {
+ ret.next = next.clone(stylesheet);
+ }
+ return ret;
+ }
+
+ int[] compute(Stylesheet stylesheet, Node context, int pos, int len)
+ throws TransformerException
+ {
+ /*if (from != null)
+ {
+ Object ret = from.evaluate(context, pos, len);
+ if (ret instanceof Collection)
+ {
+ Collection ns = (Collection) ret;
+ if (ns.size() > 0)
+ {
+ List list = new ArrayList(ns);
+ Collections.sort(list, documentOrderComparator);
+ context = (Node) list.get(0);
+ }
+ else
+ {
+ return new int[0];
+ }
+ }
+ else
+ {
+ return new int[0];
+ }
+ }*/
+ Node current = context;
+ switch (level)
+ {
+ case SINGLE:
+ if (from == null)
+ {
+ while (context != null && !countMatches(current, context))
+ {
+ context = context.getParentNode();
+ }
+ }
+ else
+ {
+ while (context != null && !countMatches(current, context) &&
+ !fromMatches(context))
+ {
+ context = context.getParentNode();
+ }
+ }
+ return (context == null) ? new int[0] :
+ new int[] { (context == current) ? pos : getIndex(current, context) };
+ case MULTIPLE:
+ List ancestors = new ArrayList();
+ while (context != null)
+ {
+ if (countMatches(current, context))
+ {
+ if (from == null || fromMatches(context))
+ {
+ ancestors.add(context);
+ }
+ }
+ context = context.getParentNode();
+ }
+ Collections.sort(ancestors, documentOrderComparator);
+ int[] ret = new int[ancestors.size()];
+ for (int i = 0; i < ret.length; i++)
+ {
+ ret[i] = getIndex(current, (Node) ancestors.get(i));
+ }
+ return ret;
+ case ANY:
+ Expr preceding = new Selector(Selector.PRECEDING,
+ Collections.EMPTY_LIST);
+ Expr ancestorOrSelf = new Selector(Selector.ANCESTOR_OR_SELF,
+ Collections.EMPTY_LIST);
+ Expr any = new UnionExpr(preceding, ancestorOrSelf);
+ Object eval = any.evaluate(context, pos, len);
+ if (eval instanceof Collection)
+ {
+ Collection ns = (Collection) eval;
+ List candidates = new ArrayList();
+ for (Iterator i = ns.iterator(); i.hasNext(); )
+ {
+ Node candidate = (Node) i.next();
+ if (countMatches(current, candidate))
+ {
+ candidates.add(candidate);
+ if (from != null && from.matches(candidate))
+ {
+ break;
+ }
+ }
+ }
+ return new int[] { candidates.size() };
+ }
+ return new int[0];
+ default:
+ throw new TransformerException("invalid level");
+ }
+ }
+
+ boolean countMatches(Node current, Node node)
+ {
+ if (count == null)
+ {
+ int cnt = current.getNodeType();
+ int nnt = node.getNodeType();
+ if (cnt != nnt)
+ {
+ return false;
+ }
+ if (nnt == Node.ELEMENT_NODE || nnt == Node.ATTRIBUTE_NODE)
+ {
+ String curi = current.getNamespaceURI();
+ String nuri = node.getNamespaceURI();
+ if ((curi == null && nuri != null) ||
+ (curi != null && !curi.equals(nuri)))
+ {
+ return false;
+ }
+ String cn = current.getLocalName();
+ if (cn == null)
+ {
+ cn = current.getNodeName();
+ }
+ String nn = node.getLocalName();
+ if (nn == null)
+ {
+ nn = node.getNodeName();
+ }
+ if (!cn.equals(nn))
+ {
+ return false;
+ }
+ }
+ return true;
+ }
+ else
+ {
+ return count.matches(node);
+ }
+ }
+
+ boolean fromMatches(Node node)
+ {
+ for (Node ctx = node.getParentNode(); ctx != null;
+ ctx = ctx.getParentNode())
+ {
+ if (from.matches(ctx))
+ {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ int getIndex(Node current, Node node)
+ {
+ int index = 0;
+ do
+ {
+ do
+ {
+ node = node.getPreviousSibling();
+ }
+ while (node != null && !countMatches(current, node));
+ index++;
+ }
+ while (node != null);
+ return index;
+ }
+
+}
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