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.LocaleUtil;
023 import com.liferay.portal.kernel.util.StringPool;
024 import com.liferay.portal.kernel.util.Validator;
025 import com.liferay.portal.kernel.xml.Element;
026 import com.liferay.portal.util.PortalUtil;
027 import com.liferay.portal.util.WebKeys;
028
029 import java.io.IOException;
030
031 import java.util.Collections;
032 import java.util.HashSet;
033 import java.util.Iterator;
034 import java.util.Locale;
035 import java.util.Set;
036
037 import javax.servlet.RequestDispatcher;
038 import javax.servlet.ServletContext;
039 import javax.servlet.ServletException;
040 import javax.servlet.http.HttpServlet;
041 import javax.servlet.http.HttpServletRequest;
042 import javax.servlet.http.HttpServletResponse;
043
044
047 public class I18nServlet extends HttpServlet {
048
049 public static Set<String> getLanguageIds() {
050 return _languageIds;
051 }
052
053 public static void setLanguageIds(Element root) {
054 Iterator<Element> itr = root.elements("servlet-mapping").iterator();
055
056 while (itr.hasNext()) {
057 Element el = itr.next();
058
059 String servletName = el.elementText("servlet-name");
060
061 if (servletName.equals("I18n Servlet")) {
062 String urlPattern = el.elementText("url-pattern");
063
064 String languageId = urlPattern.substring(
065 0, urlPattern.lastIndexOf(CharPool.SLASH));
066
067 _languageIds.add(languageId);
068 }
069 }
070
071 _languageIds = Collections.unmodifiableSet(_languageIds);
072 }
073
074 @Override
075 public void service(
076 HttpServletRequest request, HttpServletResponse response)
077 throws IOException, ServletException {
078
079 try {
080 String[] i18nData = getI18nData(request);
081
082 if ((i18nData == null) ||
083 !PortalUtil.isValidResourceId(i18nData[2])) {
084
085 PortalUtil.sendError(
086 HttpServletResponse.SC_NOT_FOUND,
087 new NoSuchLayoutException(), request, response);
088 }
089 else {
090 String i18nLanguageId = i18nData[0];
091 String i18nPath = i18nData[1];
092 String redirect = i18nData[2];
093
094 request.setAttribute(WebKeys.I18N_LANGUAGE_ID, i18nLanguageId);
095 request.setAttribute(WebKeys.I18N_PATH, i18nPath);
096
097 ServletContext servletContext = getServletContext();
098
099 RequestDispatcher requestDispatcher =
100 servletContext.getRequestDispatcher(redirect);
101
102 requestDispatcher.forward(request, response);
103 }
104 }
105 catch (Exception e) {
106 _log.error(e, e);
107
108 PortalUtil.sendError(
109 HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
110 response);
111 }
112 }
113
114 protected String[] getI18nData(HttpServletRequest request) {
115 String path = request.getRequestURI();
116
117 String contextPath = request.getContextPath();
118 String servletPath = request.getServletPath();
119
120 path = path.substring(contextPath.length() + servletPath.length());
121
122 if (Validator.isNull(path)) {
123 return null;
124 }
125
126 String i18nLanguageId = servletPath;
127
128 int pos = i18nLanguageId.lastIndexOf(CharPool.SLASH);
129
130 i18nLanguageId = i18nLanguageId.substring(pos + 1);
131
132 if (_log.isDebugEnabled()) {
133 _log.debug("Language ID " + i18nLanguageId);
134 }
135
136 if (Validator.isNull(i18nLanguageId)) {
137 return null;
138 }
139
140 String i18nPath = StringPool.SLASH + i18nLanguageId;
141
142 Locale locale = LocaleUtil.fromLanguageId(i18nLanguageId);
143
144 if (Validator.isNull(locale.getCountry())) {
145
146
147
148 locale = LanguageUtil.getLocale(locale.getLanguage());
149
150 i18nLanguageId = LocaleUtil.toLanguageId(locale);
151 }
152
153 String redirect = path;
154
155 if (_log.isDebugEnabled()) {
156 _log.debug("Redirect " + redirect);
157 }
158
159 return new String[] {i18nLanguageId, i18nPath, redirect};
160 }
161
162 private static Log _log = LogFactoryUtil.getLog(I18nServlet.class);
163
164 private static Set<String> _languageIds = new HashSet<String>();
165
166 }