src/main/java/de/uapcore/lightpit/Functions.java

Sun, 17 May 2020 16:38:04 +0200

author
Mike Becker <universe@uap-core.de>
date
Sun, 17 May 2020 16:38:04 +0200
changeset 61
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parent 47
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child 74
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permissions
-rw-r--r--

moves project index to separate sub path

unfortunately the current menu highlighting strategy sucks and this is the easiest way so that everything looks correct

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2018 Mike Becker. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 *
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28 */
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29 package de.uapcore.lightpit;
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30
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31 import org.slf4j.Logger;
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32 import org.slf4j.LoggerFactory;
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33
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34 import javax.servlet.ServletContext;
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35 import javax.servlet.http.HttpServletRequest;
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36 import java.util.Optional;
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37
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38 /**
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39 * Contains common static functions.
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40 */
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41 public final class Functions {
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42
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43 private static final Logger LOG = LoggerFactory.getLogger(Functions.class);
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44
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45 public static Optional<String[]> availableLanguages(ServletContext ctx) {
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46 return Optional.ofNullable(ctx.getInitParameter(Constants.CTX_ATTR_LANGUAGES)).map((x) -> x.split("\\s*,\\s*"));
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47 }
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48
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49 public static String enforceExt(String filename, String ext) {
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50 return filename.endsWith(ext) ? filename : filename + ext;
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51 }
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52
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53 public static String jspPath(String filename) {
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54 return enforceExt(Constants.JSP_PATH_PREFIX + filename, ".jsp");
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55 }
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56
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57 public static String dynFragmentPath(String filename) {
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58 return enforceExt(Constants.DYN_FRAGMENT_PATH_PREFIX + filename, ".jsp");
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59 }
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60
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61 public static String fqn(String base, String name) {
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62 return base + "." + name;
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63 }
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65 public static String fqn(Class<?> clazz, String name) {
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66 return fqn(clazz.getName(), name);
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67 }
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68
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69 public static String baseHref(HttpServletRequest req) {
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70 return String.format("%s://%s:%d%s/",
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71 req.getScheme(),
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72 req.getServerName(),
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73 req.getServerPort(),
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74 req.getContextPath());
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75 }
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76
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77 public static String fullPath(HttpServletRequest req) {
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78 return req.getServletPath() + Optional.ofNullable(req.getPathInfo()).orElse("");
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79 }
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80
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81 /**
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82 * Returns the module path of the given LightPIT Servlet module.
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83 * <p>
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84 * If you specify a malformed LightPIT servlet, which does not have a module
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85 * annotation, the path to the <code>/error/404.html</code> page is returned.
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86 *
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87 * @param clazz the servlet class
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88 * @return the module path
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89 */
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90 public static String modulePathOf(Class<? extends AbstractLightPITServlet> clazz) {
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91 Optional<LightPITModule> moduleInfo = Optional.ofNullable(clazz.getAnnotation(LightPITModule.class));
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92 if (moduleInfo.isPresent()) {
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93 return moduleInfo.get().modulePath();
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94 } else {
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95 LOG.warn(
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96 "{} is a LightPIT Servlet but is missing the module annotation.",
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97 clazz.getName()
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98 );
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99 return "/error/404.html";
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100 }
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101 }
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102
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103 /**
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104 * This class is not instantiatable.
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105 */
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106 private Functions() {
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107 }
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108 }

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