| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| HttpUtil |
|
| 3.375;3.375 |
| 1 | /* | |
| 2 | * $Source: /usr/cvsroot/melati/melati/src/site/resources/withWebmacro/org.melati.util.HttpUtil.html,v $ | |
| 3 | * $Revision: 1.1 $ | |
| 4 | * | |
| 5 | * Copyright (C) 2001 Myles Chippendale | |
| 6 | * | |
| 7 | * Part of Melati (http://melati.org), a framework for the rapid | |
| 8 | * development of clean, maintainable web applications. | |
| 9 | * | |
| 10 | * Melati is free software; Permission is granted to copy, distribute | |
| 11 | * and/or modify this software under the terms either: | |
| 12 | * | |
| 13 | * a) the GNU General Public License as published by the Free Software | |
| 14 | * Foundation; either version 2 of the License, or (at your option) | |
| 15 | * any later version, | |
| 16 | * | |
| 17 | * or | |
| 18 | * | |
| 19 | * b) any version of the Melati Software License, as published | |
| 20 | * at http://melati.org | |
| 21 | * | |
| 22 | * You should have received a copy of the GNU General Public License and | |
| 23 | * the Melati Software License along with this program; | |
| 24 | * if not, write to the Free Software Foundation, Inc., | |
| 25 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the | |
| 26 | * GNU General Public License and visit http://melati.org to obtain the | |
| 27 | * Melati Software License. | |
| 28 | * | |
| 29 | * Feel free to contact the Developers of Melati (http://melati.org), | |
| 30 | * if you would like to work out a different arrangement than the options | |
| 31 | * outlined here. It is our intention to allow Melati to be used by as | |
| 32 | * wide an audience as possible. | |
| 33 | * | |
| 34 | * This program is distributed in the hope that it will be useful, | |
| 35 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 36 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 37 | * GNU General Public License for more details. | |
| 38 | * | |
| 39 | * Contact details for copyright holder: | |
| 40 | * | |
| 41 | * Myles Chippendale <mylesc At paneris.org> | |
| 42 | */ | |
| 43 | package org.melati.util; | |
| 44 | ||
| 45 | import javax.servlet.http.HttpServletRequest; | |
| 46 | ||
| 47 | /** | |
| 48 | * An assortment of useful things to do with <code>Http</code>. | |
| 49 | */ | |
| 50 | public final class HttpUtil { | |
| 51 | ||
| 52 | ||
| 53 | 0 | private HttpUtil() {} |
| 54 | ||
| 55 | /** | |
| 56 | * Add a Zone URL to buffer. | |
| 57 | * | |
| 58 | * @param url an empty StringBuffer to append to | |
| 59 | * @param request the request to interrogate | |
| 60 | */ | |
| 61 | public static void appendZoneURL(StringBuffer url, | |
| 62 | HttpServletRequest request) { | |
| 63 | 642 | String scheme = request.getScheme(); |
| 64 | 642 | url.append(scheme); |
| 65 | 642 | url.append("://"); |
| 66 | 642 | url.append(request.getServerName()); |
| 67 | 642 | if ((scheme.equals("http") && |
| 68 | request.getServerPort() != 80 | |
| 69 | ) | |
| 70 | || | |
| 71 | (scheme.equals("https") && | |
| 72 | request.getServerPort() != 443)) { | |
| 73 | 532 | url.append(':'); |
| 74 | 532 | url.append(request.getServerPort()); |
| 75 | } | |
| 76 | 642 | appendRelativeZoneURL(url,request); |
| 77 | 642 | } |
| 78 | ||
| 79 | /** | |
| 80 | * Return the server URL. | |
| 81 | * | |
| 82 | * @param request the request to interrogate | |
| 83 | */ | |
| 84 | public static String getServerURL(HttpServletRequest request) { | |
| 85 | 2 | StringBuffer url = new StringBuffer(); |
| 86 | 2 | String scheme = request.getScheme(); |
| 87 | 2 | url.append(scheme); |
| 88 | 2 | url.append("://"); |
| 89 | 2 | url.append(request.getServerName()); |
| 90 | 2 | if ((scheme.equals("http") && |
| 91 | request.getServerPort() != 80 | |
| 92 | ) | |
| 93 | || | |
| 94 | (scheme.equals("https") && | |
| 95 | request.getServerPort() != 443)) { | |
| 96 | 0 | url.append(':'); |
| 97 | 0 | url.append(request.getServerPort()); |
| 98 | } | |
| 99 | 2 | return url.toString(); |
| 100 | } | |
| 101 | ||
| 102 | /** | |
| 103 | * Append relative servlet zone url. | |
| 104 | * | |
| 105 | * Note that this function should return | |
| 106 | * /zone/servlet from a request of form | |
| 107 | * http://host/zone/servlet/pathinfo?querystring | |
| 108 | * on all servlet API versions greater than 2.0. | |
| 109 | * In 2.0 the zone was returned in the ServletPath | |
| 110 | * it is now in the ContextPath. | |
| 111 | * @param url StringBuffer to append to | |
| 112 | * @param request the request to interrogate | |
| 113 | */ | |
| 114 | public static void appendRelativeZoneURL ( | |
| 115 | StringBuffer url, HttpServletRequest request) { | |
| 116 | 720 | url.append(request.getContextPath()); |
| 117 | 720 | String servletPath = request.getServletPath(); |
| 118 | 720 | if (servletPath != null && !servletPath.equals("")) { |
| 119 | 720 | url.append(servletPath.substring(0, servletPath.lastIndexOf('/'))); |
| 120 | 720 | if (servletPath.lastIndexOf('/') == -1) |
| 121 | 0 | throw new MelatiBugMelatiException( |
| 122 | "Servlet Path does not contain a forward slash:" + servletPath); | |
| 123 | } | |
| 124 | 720 | } |
| 125 | ||
| 126 | /** | |
| 127 | * Retrieve a Zone url. | |
| 128 | * @param request the request to interrogate | |
| 129 | * @return an Url up to the zone specification as a String | |
| 130 | */ | |
| 131 | public static String zoneURL(HttpServletRequest request) { | |
| 132 | 636 | StringBuffer url = new StringBuffer(); |
| 133 | 636 | appendZoneURL(url, request); |
| 134 | 636 | return url.toString(); |
| 135 | } | |
| 136 | ||
| 137 | /** | |
| 138 | * Retrieve a Servlet url from a request. | |
| 139 | * @param request the request to interrogate | |
| 140 | * @return an Url up to the servlet specification as a String | |
| 141 | */ | |
| 142 | public static String servletURL(HttpServletRequest request) { | |
| 143 | 4 | StringBuffer url = new StringBuffer(); |
| 144 | 4 | appendZoneURL(url, request); |
| 145 | 4 | String servlet = request.getServletPath(); |
| 146 | 4 | if (servlet != null && !servlet.equals("")) |
| 147 | 4 | url.append(servlet.substring( |
| 148 | servlet.lastIndexOf('/'), servlet.length())); | |
| 149 | 4 | return url.toString(); |
| 150 | } | |
| 151 | ||
| 152 | /** | |
| 153 | * Retrieve a relative url from a request. | |
| 154 | * @param request the request to interrogate | |
| 155 | * @return a relative Url | |
| 156 | */ | |
| 157 | public static String getRelativeRequestURL(HttpServletRequest request) { | |
| 158 | 30 | StringBuffer url = new StringBuffer(); |
| 159 | 30 | url.append(request.getContextPath()); |
| 160 | 30 | if (request.getServletPath() != null) url.append(request.getServletPath()); |
| 161 | 30 | if (request.getPathInfo() != null) url.append(request.getPathInfo()); |
| 162 | 30 | return url.toString(); |
| 163 | } | |
| 164 | ||
| 165 | /** | |
| 166 | * @param url An url or relative url which may end in a slash | |
| 167 | * @param relativeUrl A relative url which may start with a slash | |
| 168 | * @return an url without a duplicated slash at the join | |
| 169 | */ | |
| 170 | public static String concatenateUrls(String url, String relativeUrl) { | |
| 171 | 6 | if (url.endsWith("/") && relativeUrl.startsWith("/")) |
| 172 | 4 | return url.substring(0, url.lastIndexOf('/')) + relativeUrl; |
| 173 | else | |
| 174 | 2 | return url + relativeUrl; |
| 175 | } | |
| 176 | ||
| 177 | } |