001
014
015 package com.liferay.portal.servlet;
016
017 import com.liferay.portal.NoSuchLayoutException;
018 import com.liferay.portal.kernel.language.LanguageUtil;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021 import com.liferay.portal.kernel.util.CharPool;
022 import com.liferay.portal.kernel.util.GetterUtil;
023 import com.liferay.portal.kernel.util.LocaleUtil;
024 import com.liferay.portal.kernel.util.StringPool;
025 import com.liferay.portal.kernel.util.Validator;
026 import com.liferay.portal.kernel.xml.Element;
027 import com.liferay.portal.util.PortalUtil;
028 import com.liferay.portal.util.WebKeys;
029
030 import java.io.IOException;
031
032 import java.util.Collections;
033 import java.util.HashSet;
034 import java.util.List;
035 import java.util.Locale;
036 import java.util.Set;
037
038 import javax.servlet.RequestDispatcher;
039 import javax.servlet.ServletContext;
040 import javax.servlet.ServletException;
041 import javax.servlet.http.HttpServlet;
042 import javax.servlet.http.HttpServletRequest;
043 import javax.servlet.http.HttpServletResponse;
044
045
048 public class I18nServlet extends HttpServlet {
049
050 public static Set<String> getLanguageIds() {
051 return _languageIds;
052 }
053
054 public static void setLanguageIds(Element root) {
055 _languageIds.clear();
056
057 List<Element> rootElements = root.elements("servlet-mapping");
058
059 for (Element element : rootElements) {
060 String servletName = element.elementText("servlet-name");
061
062 if (servletName.equals("I18n Servlet")) {
063 String urlPattern = element.elementText("url-pattern");
064
065 String languageId = urlPattern.substring(
066 0, urlPattern.lastIndexOf(CharPool.SLASH));
067
068 _languageIds.add(languageId);
069 }
070 }
071
072 _languageIds = Collections.unmodifiableSet(_languageIds);
073 }
074
075 @Override
076 public void service(
077 HttpServletRequest request, HttpServletResponse response)
078 throws IOException, ServletException {
079
080 try {
081 String[] i18nData = getI18nData(request);
082
083 if ((i18nData == null) ||
084 !PortalUtil.isValidResourceId(i18nData[2])) {
085
086 PortalUtil.sendError(
087 HttpServletResponse.SC_NOT_FOUND,
088 new NoSuchLayoutException(), request, response);
089 }
090 else {
091 String i18nLanguageId = i18nData[0];
092 String i18nPath = i18nData[1];
093 String redirect = i18nData[2];
094
095 request.setAttribute(WebKeys.I18N_LANGUAGE_ID, i18nLanguageId);
096 request.setAttribute(WebKeys.I18N_PATH, i18nPath);
097
098 ServletContext servletContext = getServletContext();
099
100 RequestDispatcher requestDispatcher =
101 servletContext.getRequestDispatcher(redirect);
102
103 requestDispatcher.forward(request, response);
104 }
105 }
106 catch (Exception e) {
107 _log.error(e, e);
108
109 PortalUtil.sendError(
110 HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
111 response);
112 }
113 }
114
115 protected String[] getI18nData(HttpServletRequest request) {
116 String path = GetterUtil.getString(request.getPathInfo());
117
118 if (Validator.isNull(path)) {
119 return null;
120 }
121
122 String i18nLanguageId = request.getServletPath();
123
124 int pos = i18nLanguageId.lastIndexOf(CharPool.SLASH);
125
126 i18nLanguageId = i18nLanguageId.substring(pos + 1);
127
128 if (_log.isDebugEnabled()) {
129 _log.debug("Language ID " + i18nLanguageId);
130 }
131
132 if (Validator.isNull(i18nLanguageId)) {
133 return null;
134 }
135
136 String i18nPath = StringPool.SLASH + i18nLanguageId;
137
138 Locale locale = LocaleUtil.fromLanguageId(i18nLanguageId);
139
140 if (Validator.isNull(locale.getCountry())) {
141
142
143
144 locale = LanguageUtil.getLocale(locale.getLanguage());
145
146 i18nLanguageId = LocaleUtil.toLanguageId(locale);
147 }
148
149 String redirect = path;
150
151 if (_log.isDebugEnabled()) {
152 _log.debug("Redirect " + redirect);
153 }
154
155 return new String[] {i18nLanguageId, i18nPath, redirect};
156 }
157
158 private static Log _log = LogFactoryUtil.getLog(I18nServlet.class);
159
160 private static Set<String> _languageIds = new HashSet<String>();
161
162 }