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Diffstat (limited to 'libjava/gnu/xml/xpath/StartsWithFunction.java')
-rw-r--r-- | libjava/gnu/xml/xpath/StartsWithFunction.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/libjava/gnu/xml/xpath/StartsWithFunction.java b/libjava/gnu/xml/xpath/StartsWithFunction.java new file mode 100644 index 0000000..c748295 --- /dev/null +++ b/libjava/gnu/xml/xpath/StartsWithFunction.java @@ -0,0 +1,86 @@ +/* StartsWithFunction.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.xpath; + +import java.util.List; +import org.w3c.dom.Node; + +/** + * The <code>starts-with</code> function returns true if the first argument + * string starts with the second argument string, and otherwise returns false. + * + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +final class StartsWithFunction + extends Expr +{ + + final Expr arg1; + final Expr arg2; + + StartsWithFunction(List args) + { + this((Expr) args.get(0), (Expr) args.get(1)); + } + + StartsWithFunction(Expr arg1, Expr arg2) + { + this.arg1 = arg1; + this.arg2 = arg2; + } + + public Object evaluate(Node context, int pos, int len) + { + Object val1 = arg1.evaluate(context, pos, len); + Object val2 = arg2.evaluate(context, pos, len); + String s1 = _string(context, val1); + String s2 = _string(context, val2); + return s1.startsWith(s2) ? Boolean.TRUE : Boolean.FALSE; + } + + public Expr clone(Object context) + { + return new StartsWithFunction(arg1.clone(context), arg2.clone(context)); + } + + public String toString() + { + return "starts-with(" + arg1 + "," + arg2 + ")"; + } + +} |