| /* $Id$ |
| * |
| * 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.etch.interoptester; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.etch.util.Assertion; |
| import org.apache.etch.util.core.xml.XmlParser.TagElement; |
| |
| |
| /** |
| * Arg models an named value passed to a procedure (which is used to initialize |
| * a Param once received). |
| */ |
| public class Arg |
| { |
| /** |
| * @param r |
| * @return the Arg that was parsed. |
| */ |
| public static Arg parse( TagElement r ) |
| { |
| Assertion.check( r.matches( null, "arg" ), "tag is arg" ); |
| |
| String name = r.getAttr( null, "name" ); |
| if (name == null || name.length() == 0) |
| throw new IllegalArgumentException( "arg tag has no name" ); |
| |
| String value = r.getAttr( null, "value" ); |
| if (value == null && r.countChildren() > 0) |
| value = r.getCdataValue(); |
| |
| if (value == null) |
| throw new IllegalArgumentException( "arg '"+name+"' has no value" ); |
| |
| return new Arg( name, value ); |
| } |
| |
| private Arg( String name, String value ) |
| { |
| this.name = name; |
| this.value = value; |
| } |
| |
| private final String name; |
| |
| private final String value; |
| |
| /** |
| * @return the name of this arg. |
| */ |
| public String name() |
| { |
| return name; |
| } |
| |
| /** |
| * @param args named values which might be used as substitutions. |
| * @return the value of this arg. This might involve substituting named |
| * values from args. |
| */ |
| public String value( Map<String, String> args ) |
| { |
| if (value == null) |
| return null; |
| |
| return Substitutor.subst( value, args ); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return String.format( "Arg( %s, %s )", name, value ); |
| } |
| |
| /** |
| * @param who |
| * @param args |
| * @param substs |
| * @return the map formed by processing substitutions from substs into each |
| * value from args. |
| */ |
| public static Map<String, String> processSubst( String who, |
| Map<String, Arg> args, Map<String, String> substs ) |
| { |
| Map<String, String> nargs = new HashMap<String, String>(); |
| for (Arg a: args.values()) |
| { |
| String v = a.value( substs ); |
| nargs.put( a.name(), v ); |
| } |
| return nargs; |
| } |
| } |