/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
/**
*
*/
package org.richfaces.example;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.PostConstruct;
import javax.faces.FacesException;
import javax.faces.bean.ApplicationScoped;
import javax.faces.bean.ManagedBean;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
/**
* @author leo
* @author <a href="http://community.jboss.org/people/bleathem">Brian Leathem</a>
*/
@ManagedBean
@ApplicationScoped
public class Pages {
public static final String DEFAULT_TITLE_PATTERN = "<ui\\:param\\s+name=\"title\"\\s+value=\"([^\"]*)\"";
private static final Pattern XHTML_PATTERN = Pattern.compile(".*\\.xhtml");
private static final Pattern PARENT_FOLDER_PATTERN = Pattern.compile("(/.*/.*/).*\\.xhtml");
private static final Pattern FOLDER_PATTERN = Pattern.compile(".*/$");
private static final String EXAMPLE_PATH = "/examples";
private Pattern titlePattern = compilePattern(DEFAULT_TITLE_PATTERN);
private Map<String, List<PageDescriptionBean>> pageFolderMap;
private List<PageDescriptionBean> indexPages;
public Pattern compilePattern(String titlePattern) {
return Pattern.compile(titlePattern, Pattern.CASE_INSENSITIVE | Pattern.MULTILINE);
}
@PostConstruct
public void init() {
pageFolderMap = new HashMap<String, List<PageDescriptionBean>>();
Set<String> resourcePaths = getExternalContext().getResourcePaths(EXAMPLE_PATH);
indexPages = new ArrayList<PageDescriptionBean>(resourcePaths.size());
for (Iterator<String> iterator = resourcePaths.iterator(); iterator.hasNext();) {
String folderPath = iterator.next();
if (FOLDER_PATTERN.matcher(folderPath).matches() || new File(folderPath).isDirectory()) {
String resourcePath = resourcePath(folderPath);
pageFolderMap.put(resourcePath, getPagesByPattern(XHTML_PATTERN, resourcePath));
String title = resourcePath;
try {
title = resourcePath.split("/")[2];
title = firstChartToUppercase(title);
} finally {
indexPages.add(new PageDescriptionBean(resourcePath + "index.jsf", title));
}
}
}
indexPages.addAll(getPagesByPattern(XHTML_PATTERN, EXAMPLE_PATH));
Collections.sort(indexPages);
}
private String resourcePath(String fullPath) {
boolean isDirectory = new File(fullPath).isDirectory();
int i = fullPath.indexOf("/examples");
String path = fullPath.substring(i);
if (isDirectory && !path.endsWith("/")) {
path = path + "/";
}
return path;
}
private String firstChartToUppercase(String string) {
char[] chars = string.toCharArray();
chars[0] = Character.toUpperCase(chars[0]);
return new String(chars);
}
private ExternalContext getExternalContext() {
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = null;
if (null != facesContext) {
externalContext = facesContext.getExternalContext();
}
return externalContext;
}
public List<PageDescriptionBean> getXhtmlPages() {
String viewId = FacesContext.getCurrentInstance().getViewRoot().getViewId();
Matcher m = PARENT_FOLDER_PATTERN.matcher(viewId);
String path;
if (m.find()) {
path = m.group(1);
} else {
return indexPages;
}
return pageFolderMap.get(path);
}
/**
*
*/
private List<PageDescriptionBean> getPagesByPattern(Pattern pattern, String path) {
List<PageDescriptionBean> pageList = new ArrayList<PageDescriptionBean>();
Set<String> resourcePaths = getExternalContext().getResourcePaths(path);
for (Iterator<String> iterator = resourcePaths.iterator(); iterator.hasNext();) {
String page = resourcePath(iterator.next());
if (pattern.matcher(page).matches() && !page.endsWith("/index.xhtml")) {
InputStream pageInputStream = getExternalContext().getResourceAsStream(page);
String title = page;
if (null != pageInputStream) {
byte[] head = new byte[2048];
try {
int readed = pageInputStream.read(head);
String headString = new String(head, 0, readed);
if (title.endsWith("input/")) {
System.out.println(headString);
}
Matcher titleMatcher = titlePattern.matcher(headString);
if (titleMatcher.find() && titleMatcher.group(1).length() > 0) {
title = titleMatcher.group(1);
}
} catch (IOException e) {
throw new FacesException("can't read directory content", e);
} finally {
try {
pageInputStream.close();
} catch (IOException e) {
// ignore it.
}
}
}
pageList.add(new PageDescriptionBean(page, title));
}
}
Collections.sort(pageList);
return pageList;
}
/**
* @param titlePattern the titlePattern to set
*/
public void setTitlePattern(String titlePattern) {
this.titlePattern = compilePattern(titlePattern);
}
/**
* @return the titlePattern
*/
public String getTitlePattern() {
return titlePattern.toString();
}
}