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This OSGi bundle wraps poi, poi-contrib, poi-ooxml, poi-ooxml-schemas and poi-scratchpad ${pkgVersion} jar files.
/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ====================================================================
*/
package org.apache.poi.sl.draw.geom;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* A simple regexp-based parser of shape guide formulas in DrawingML
*
* @author Yegor Kozlov
*/
public class ExpressionParser {
static final HashMap> impls =
new HashMap>();
static {
impls.put("\\*/ +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", MultiplyDivideExpression.class);
impls.put("\\+- +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)( 0)?", AddSubtractExpression.class);
impls.put("\\+/ +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", AddDivideExpression.class);
impls.put("\\?: +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", IfElseExpression.class);
impls.put("val +([\\-\\w]+)", LiteralValueExpression.class);
impls.put("abs +([\\-\\w]+)", AbsExpression.class);
impls.put("sqrt +([\\-\\w]+)", SqrtExpression.class);
impls.put("max +([\\-\\w]+) +([\\-\\w]+)", MaxExpression.class);
impls.put("min +([\\-\\w]+) +([\\-\\w]+)", MinExpression.class);
impls.put("at2 +([\\-\\w]+) +([\\-\\w]+)", ArcTanExpression.class);
impls.put("sin +([\\-\\w]+) +([\\-\\w]+)", SinExpression.class);
impls.put("cos +([\\-\\w]+) +([\\-\\w]+)", CosExpression.class);
impls.put("tan +([\\-\\w]+) +([\\-\\w]+)", TanExpression.class);
impls.put("cat2 +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", CosineArcTanExpression.class);
impls.put("sat2 +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", SinArcTanExpression.class);
impls.put("pin +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", PinExpression.class);
impls.put("mod +([\\-\\w]+) +([\\-\\w]+) +([\\-\\w]+)", ModExpression.class);
}
public static Expression parse(String str){
for(String regexp : impls.keySet()) {
Pattern ptrn = Pattern.compile(regexp);
Matcher m = ptrn.matcher(str);
if(m.matches()) {
Class c = impls.get(regexp);
try {
return c.getDeclaredConstructor(Matcher.class).newInstance(m);
} catch (Exception e){
throw new RuntimeException(e);
}
}
}
throw new RuntimeException("Unsupported formula: " + str);
}
}