    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}