001
014
015 package com.liferay.portal.servlet.filters.dynamiccss;
016
017 import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayOutputStream;
018 import com.liferay.portal.kernel.io.unsync.UnsyncPrintWriter;
019 import com.liferay.portal.kernel.log.Log;
020 import com.liferay.portal.kernel.log.LogFactoryUtil;
021 import com.liferay.portal.kernel.scripting.ScriptingException;
022 import com.liferay.portal.kernel.util.ParamUtil;
023 import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
024 import com.liferay.portal.kernel.util.StringBundler;
025 import com.liferay.portal.kernel.util.StringPool;
026 import com.liferay.portal.kernel.util.StringUtil;
027 import com.liferay.portal.kernel.util.SystemProperties;
028 import com.liferay.portal.kernel.util.UnsyncPrintWriterPool;
029 import com.liferay.portal.kernel.util.Validator;
030 import com.liferay.portal.kernel.util.WebKeys;
031 import com.liferay.portal.model.PortletConstants;
032 import com.liferay.portal.model.Theme;
033 import com.liferay.portal.scripting.ruby.RubyExecutor;
034 import com.liferay.portal.service.ThemeLocalServiceUtil;
035 import com.liferay.portal.theme.ThemeDisplay;
036 import com.liferay.portal.util.PortalUtil;
037 import com.liferay.util.ContentUtil;
038
039 import java.util.HashMap;
040 import java.util.Map;
041 import java.util.regex.Matcher;
042 import java.util.regex.Pattern;
043
044 import javax.servlet.http.HttpServletRequest;
045
046
050 public class DynamicCSSUtil {
051
052 public static void init() {
053 try {
054 _rubyScript = ContentUtil.get(
055 PortalClassLoaderUtil.getClassLoader(),
056 "com/liferay/portal/servlet/filters/dynamiccss/main.rb");
057 }
058 catch (Exception e) {
059 _log.error(e, e);
060 }
061 }
062
063 public static String parseSass(
064 HttpServletRequest request, String cssRealPath, String content)
065 throws ScriptingException {
066
067 String cssThemePath = getCssThemePath(request, cssRealPath);
068
069 if (!DynamicCSSFilter.ENABLED || (cssThemePath == null)) {
070 return content;
071 }
072
073 Map<String, Object> inputObjects = new HashMap<String, Object>();
074
075 inputObjects.put("content", content);
076 inputObjects.put("cssRealPath", cssRealPath);
077 inputObjects.put("cssThemePath", cssThemePath);
078 inputObjects.put("sassCachePath", _SASS_DIR);
079
080 UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
081 new UnsyncByteArrayOutputStream();
082
083 UnsyncPrintWriter unsyncPrintWriter = UnsyncPrintWriterPool.borrow(
084 unsyncByteArrayOutputStream);
085
086 inputObjects.put("out", unsyncPrintWriter);
087
088 _rubyExecutor.eval(null, inputObjects, null, _rubyScript);
089
090 unsyncPrintWriter.flush();
091
092 String parsedContent = unsyncByteArrayOutputStream.toString();
093
094 if (Validator.isNotNull(parsedContent)) {
095 return parsedContent;
096 }
097
098 return content;
099 }
100
101 protected static String getCssThemePath(
102 HttpServletRequest request, String cssRealPath) {
103
104 if (request == null) {
105 return null;
106 }
107
108 ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
109 WebKeys.THEME_DISPLAY);
110
111 if (themeDisplay != null) {
112 return themeDisplay.getPathThemeCss();
113 }
114
115 long companyId = PortalUtil.getCompanyId(request);
116
117 String themeId = ParamUtil.getString(request, "themeId");
118
119 Matcher portalThemeMatcher = _portalThemePattern.matcher(cssRealPath);
120
121 if (portalThemeMatcher.find()) {
122 String themePathId = portalThemeMatcher.group(1);
123
124 themePathId = StringUtil.replace(
125 themePathId, StringPool.UNDERLINE, StringPool.BLANK);
126
127 themeId = PortalUtil.getJsSafePortletId(themePathId);
128 }
129 else {
130 Matcher pluginThemeMatcher = _pluginThemePattern.matcher(
131 cssRealPath);
132
133 if (pluginThemeMatcher.find()) {
134 String themePathId = pluginThemeMatcher.group(1);
135
136 themePathId = StringUtil.replace(
137 themePathId, StringPool.UNDERLINE, StringPool.BLANK);
138
139 StringBundler sb = new StringBundler(4);
140
141 sb.append(themePathId);
142 sb.append(PortletConstants.WAR_SEPARATOR);
143 sb.append(themePathId);
144 sb.append("theme");
145
146 themePathId = sb.toString();
147
148 themeId = PortalUtil.getJsSafePortletId(themePathId);
149 }
150 }
151
152 if (Validator.isNull(themeId)) {
153 return null;
154 }
155
156 try {
157 Theme theme = ThemeLocalServiceUtil.getTheme(
158 companyId, themeId, false);
159
160 String themeStaticResourcePath = theme.getStaticResourcePath();
161
162 return themeStaticResourcePath.concat(theme.getCssPath());
163 }
164 catch (Exception e) {
165 _log.error(e, e);
166 }
167
168 return null;
169 }
170
171 private static final String _SASS_DIR =
172 SystemProperties.get(SystemProperties.TMP_DIR) + "/liferay/sass";
173
174 private static Log _log = LogFactoryUtil.getLog(DynamicCSSUtil.class);
175
176 private static Pattern _pluginThemePattern =
177 Pattern.compile("\\/([^\\/]+)-theme\\/", Pattern.CASE_INSENSITIVE);
178 private static Pattern _portalThemePattern =
179 Pattern.compile("themes\\/([^\\/]+)\\/css", Pattern.CASE_INSENSITIVE);
180 private static RubyExecutor _rubyExecutor = new RubyExecutor();
181 private static String _rubyScript;
182
183 }