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+/* FormatNumberFunction.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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.text.DecimalFormat;
+import java.text.DecimalFormatSymbols;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import javax.xml.xpath.XPathFunction;
+import javax.xml.xpath.XPathFunctionException;
+import org.w3c.dom.Node;
+import gnu.xml.xpath.Expr;
+import gnu.xml.xpath.Function;
+
+/**
+ * The XSLT <code>format-number()</code>function.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+final class FormatNumberFunction
+ extends Expr
+ implements XPathFunction, Function
+{
+
+ final Stylesheet stylesheet;
+ List args;
+
+ FormatNumberFunction(Stylesheet stylesheet)
+ {
+ this.stylesheet = stylesheet;
+ }
+
+ public Object evaluate(List args)
+ throws XPathFunctionException
+ {
+ // Useless...
+ return Collections.EMPTY_SET;
+ }
+
+ public void setArguments(List args)
+ {
+ this.args = args;
+ }
+
+ public Object evaluate(Node context, int pos, int len)
+ {
+ int arity = args.size();
+ List values = new ArrayList(arity);
+ for (int i = 0; i < arity; i++)
+ {
+ Expr arg = (Expr) args.get(i);
+ values.add(arg.evaluate(context, pos, len));
+ }
+ double number = _number(context, values.get(0));
+ String pattern = _string(context, values.get(1));
+ // Currency symbol &#x00a4; is not supposed to be present
+ if (pattern.indexOf('\u00a4') != -1)
+ {
+ // Replace with $ (Xalan does this)
+ pattern = pattern.replace('\u00a4', '$');
+ }
+ String dfName = null;
+ if (arity > 2)
+ {
+ dfName = _string(context, values.get(2));
+ // otherwise the default decimal-format will be used
+ }
+ DecimalFormat df = (DecimalFormat) stylesheet.decimalFormats.get(dfName);
+ if (df == null)
+ {
+ throw new IllegalArgumentException("No such decimal-format: " +
+ dfName);
+ }
+ df.applyLocalizedPattern(pattern);
+ return df.format(number);
+ }
+
+ public Expr clone(Object context)
+ {
+ Stylesheet s = stylesheet;
+ if (context instanceof Stylesheet)
+ {
+ s = (Stylesheet) context;
+ }
+ FormatNumberFunction f = new FormatNumberFunction(s);
+ int len = args.size();
+ List args2 = new ArrayList(len);
+ for (int i = 0; i < len; i++)
+ {
+ args2.add(((Expr) args.get(i)).clone(context));
+ }
+ f.setArguments(args2);
+ return f;
+ }
+
+}
+