001// Copyright 2013 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.SymbolConstants;
018import org.apache.tapestry5.ioc.annotations.Symbol;
019import org.apache.tapestry5.services.PathConstructor;
020
021public class PathConstructorImpl implements PathConstructor
022{
023    private final String clientPrefix, dispatchPrefix;
024
025    public PathConstructorImpl(
026            @Symbol(SymbolConstants.CONTEXT_PATH) String contextPath,
027            @Symbol(SymbolConstants.APPLICATION_FOLDER) String applicationFolder)
028    {
029        StringBuilder b = new StringBuilder("/");
030
031        if (applicationFolder.length() > 0)
032        {
033            b.append(applicationFolder);
034            b.append('/');
035        }
036
037        dispatchPrefix = b.toString();
038
039        // If you mis-configure embedded Tomcat, you can get a contextPath of "/" rather than "".
040        // To make things fool proof, we handle that case.
041        clientPrefix = (contextPath.equals("/") ? "" : contextPath) + dispatchPrefix;
042    }
043
044    public String constructClientPath(String... terms)
045    {
046        return build(clientPrefix, terms);
047    }
048
049    public String constructDispatchPath(String... terms)
050    {
051        return build(dispatchPrefix, terms);
052    }
053
054    private String build(String prefix, String... terms)
055    {
056        StringBuilder b = new StringBuilder(prefix);
057        String sep = "";
058
059        for (String term : terms)
060        {
061            b.append(sep);
062            b.append(term);
063
064            sep = "/";
065        }
066
067
068        return b.toString();
069    }
070}