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.http.TapestryHttpSymbolConstants;
019import org.apache.tapestry5.ioc.annotations.Symbol;
020import org.apache.tapestry5.services.PathConstructor;
021
022public class PathConstructorImpl implements PathConstructor
023{
024    private final String clientPrefix, dispatchPrefix;
025
026    public PathConstructorImpl(
027            @Symbol(TapestryHttpSymbolConstants.CONTEXT_PATH) String contextPath,
028            @Symbol(SymbolConstants.APPLICATION_FOLDER) String applicationFolder)
029    {
030        StringBuilder b = new StringBuilder("/");
031
032        if (applicationFolder.length() > 0)
033        {
034            b.append(applicationFolder);
035            b.append('/');
036        }
037
038        dispatchPrefix = b.toString();
039
040        // If you mis-configure embedded Tomcat, you can get a contextPath of "/" rather than "".
041        // To make things fool proof, we handle that case.
042        clientPrefix = (contextPath.equals("/") ? "" : contextPath) + dispatchPrefix;
043    }
044
045    public String constructClientPath(String... terms)
046    {
047        return build(clientPrefix, terms);
048    }
049
050    public String constructDispatchPath(String... terms)
051    {
052        return build(dispatchPrefix, terms);
053    }
054
055    private String build(String prefix, String... terms)
056    {
057        StringBuilder b = new StringBuilder(prefix);
058        String sep = "";
059
060        for (String term : terms)
061        {
062            b.append(sep);
063            b.append(term);
064
065            sep = "/";
066        }
067
068
069        return b.toString();
070    }
071}