StringReplaceFirstFunction.java

package com.googlecode.aviator.runtime.function.string;

import java.util.Map;

import com.googlecode.aviator.exception.ExpressionRuntimeException;
import com.googlecode.aviator.runtime.function.AbstractFunction;
import com.googlecode.aviator.runtime.function.FunctionUtils;
import com.googlecode.aviator.runtime.type.AviatorObject;
import com.googlecode.aviator.runtime.type.AviatorString;


/**
 * string.replace_first function
 * 
 * @author boyan
 * 
 */
public class StringReplaceFirstFunction extends AbstractFunction {
    public String getName() {
        return "string.replace_first";
    }


    @Override
    public AviatorObject call(Map<String, Object> env, AviatorObject arg1, AviatorObject arg2, AviatorObject arg3) {
        String target = FunctionUtils.getStringValue(arg1, env);
        String regex = FunctionUtils.getStringValue(arg2, env);
        String replacement = FunctionUtils.getStringValue(arg3, env);
        return new AviatorString(target.replaceFirst(regex, replacement));

    }

}