001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.tools;
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.util.FastDateFormatFactoryUtil;
020    import com.liferay.portal.kernel.util.FileUtil;
021    import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
022    import com.liferay.portal.kernel.util.PropsUtil;
023    import com.liferay.portal.kernel.util.StringPool;
024    import com.liferay.portal.kernel.util.StringUtil;
025    import com.liferay.portal.kernel.util.SystemProperties;
026    import com.liferay.portal.kernel.util.UnsyncPrintWriterPool;
027    import com.liferay.portal.kernel.util.Validator;
028    import com.liferay.portal.model.ModelHintsConstants;
029    import com.liferay.portal.scripting.ruby.RubyExecutor;
030    import com.liferay.portal.servlet.filters.aggregate.AggregateFilter;
031    import com.liferay.portal.servlet.filters.aggregate.FileAggregateContext;
032    import com.liferay.portal.util.FastDateFormatFactoryImpl;
033    import com.liferay.portal.util.FileImpl;
034    import com.liferay.portal.util.PortalImpl;
035    import com.liferay.portal.util.PortalUtil;
036    import com.liferay.portal.util.PropsImpl;
037    
038    import java.io.File;
039    
040    import java.util.ArrayList;
041    import java.util.HashMap;
042    import java.util.List;
043    import java.util.Map;
044    
045    import org.apache.tools.ant.DirectoryScanner;
046    
047    /**
048     * @author Brian Wing Shun Chan
049     * @author Raymond Augé
050     */
051    public class SassToCssBuilder {
052    
053            public static File getCacheFile(String fileName) {
054                    fileName = StringUtil.replace(
055                            fileName, StringPool.BACK_SLASH, StringPool.SLASH);
056    
057                    int pos = fileName.lastIndexOf(StringPool.SLASH);
058    
059                    String cacheFileName =
060                            fileName.substring(0, pos + 1) + ".sass-cache/" +
061                                    fileName.substring(pos + 1);
062    
063                    return new File(cacheFileName);
064            }
065    
066            public static void main(String[] args) {
067                    Map<String, String> arguments = ArgumentsUtil.parseArguments(args);
068    
069                    List<String> dirNames = new ArrayList<String>();
070    
071                    String dirName = arguments.get("sass.dir");
072    
073                    if (Validator.isNotNull(dirName)) {
074                            dirNames.add(dirName);
075                    }
076                    else {
077                            for (int i = 0;; i++ ) {
078                                    dirName = arguments.get("sass.dir." + i);
079    
080                                    if (Validator.isNotNull(dirName)) {
081                                            dirNames.add(dirName);
082                                    }
083                                    else {
084                                            break;
085                                    }
086                            }
087                    }
088    
089                    try {
090                            new SassToCssBuilder(dirNames);
091                    }
092                    catch (Exception e) {
093                            e.printStackTrace();
094                    }
095            }
096    
097            public static String parseStaticTokens(String content) {
098                    return StringUtil.replace(
099                            content,
100                            new String[] {
101                                    "@model_hints_constants_text_display_height@",
102                                    "@model_hints_constants_text_display_width@",
103                                    "@model_hints_constants_textarea_display_height@",
104                                    "@model_hints_constants_textarea_display_width@"
105                            },
106                            new String[] {
107                                    ModelHintsConstants.TEXT_DISPLAY_HEIGHT,
108                                    ModelHintsConstants.TEXT_DISPLAY_WIDTH,
109                                    ModelHintsConstants.TEXTAREA_DISPLAY_HEIGHT,
110                                    ModelHintsConstants.TEXTAREA_DISPLAY_WIDTH
111                            });
112            }
113    
114            public SassToCssBuilder(List<String> dirNames) throws Exception {
115                    Class<?> clazz = getClass();
116    
117                    ClassLoader classLoader = clazz.getClassLoader();
118    
119                    _initUtil(classLoader);
120    
121                    _rubyScript = StringUtil.read(
122                            classLoader,
123                            "com/liferay/portal/servlet/filters/dynamiccss/main.rb");
124    
125                    _tempDir = SystemProperties.get(SystemProperties.TMP_DIR);
126    
127                    for (String dirName : dirNames) {
128    
129                            // Create a new Ruby executor as a workaround for a bug with Ruby
130                            // that breaks "ant build-css" when it parses too many CSS files
131    
132                            _rubyExecutor = new RubyExecutor();
133    
134                            _parseSassDirectory(dirName);
135                    }
136            }
137    
138            private String _getContent(File file) throws Exception {
139                    String content = FileUtil.read(file);
140    
141                    content = AggregateFilter.aggregateCss(
142                            new FileAggregateContext(file), content);
143    
144                    return parseStaticTokens(content);
145            }
146    
147            private String _getCssThemePath(String fileName) {
148                    int pos = fileName.lastIndexOf("/css/");
149    
150                    return fileName.substring(0, pos + 4);
151            }
152    
153            private void _initUtil(ClassLoader classLoader) {
154                    FastDateFormatFactoryUtil fastDateFormatFactoryUtil =
155                            new FastDateFormatFactoryUtil();
156    
157                    fastDateFormatFactoryUtil.setFastDateFormatFactory(
158                            new FastDateFormatFactoryImpl());
159    
160                    FileUtil fileUtil = new FileUtil();
161    
162                    fileUtil.setFile(new FileImpl());
163    
164                    PortalClassLoaderUtil.setClassLoader(classLoader);
165    
166                    PortalUtil portalUtil = new PortalUtil();
167    
168                    portalUtil.setPortal(new PortalImpl());
169    
170                    PropsUtil.setProps(new PropsImpl());
171            }
172    
173            private void _parseSassDirectory(String dirName) throws Exception {
174                    DirectoryScanner directoryScanner = new DirectoryScanner();
175    
176                    directoryScanner.setBasedir(dirName);
177                    directoryScanner.setExcludes(
178                            new String[] {
179                                    "**\\_diffs\\**", "**\\.sass-cache*\\**",
180                                    "**\\.sass_cache_*\\**", "**\\_sass_cache_*\\**",
181                                    "**\\_styled\\**", "**\\_unstyled\\**"
182                            });
183                    directoryScanner.setIncludes(new String[] {"**\\*.css"});
184    
185                    directoryScanner.scan();
186    
187                    String[] fileNames = directoryScanner.getIncludedFiles();
188    
189                    for (String fileName : fileNames) {
190                            fileName = StringUtil.replace(
191                                    dirName + StringPool.SLASH + fileName, StringPool.BACK_SLASH,
192                                    StringPool.SLASH);
193    
194                            try {
195                                    long start = System.currentTimeMillis();
196    
197                                    if (_parseSassFile(fileName)) {
198                                            long end = System.currentTimeMillis();
199    
200                                            System.out.println(
201                                                    "Parsed " + fileName + " in " + (end - start) + " ms");
202                                    }
203                            }
204                            catch (Exception e) {
205                                    System.out.println("Unable to parse " + fileName);
206    
207                                    e.printStackTrace();
208                            }
209                    }
210            }
211    
212            private boolean _parseSassFile(String fileName) throws Exception {
213                    File file = new File(fileName);
214                    File cacheFile = getCacheFile(fileName);
215    
216                    if (file.lastModified() == cacheFile.lastModified()) {
217                            return false;
218                    }
219    
220                    Map<String, Object> inputObjects = new HashMap<String, Object>();
221    
222                    inputObjects.put("content", _getContent(file));
223                    inputObjects.put("cssRealPath", fileName);
224                    inputObjects.put("cssThemePath", _getCssThemePath(fileName));
225                    inputObjects.put("sassCachePath", _tempDir);
226    
227                    UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
228                            new UnsyncByteArrayOutputStream();
229    
230                    UnsyncPrintWriter unsyncPrintWriter = UnsyncPrintWriterPool.borrow(
231                            unsyncByteArrayOutputStream);
232    
233                    inputObjects.put("out", unsyncPrintWriter);
234    
235                    _rubyExecutor.eval(null, inputObjects, null, _rubyScript);
236    
237                    unsyncPrintWriter.flush();
238    
239                    String parsedContent = unsyncByteArrayOutputStream.toString();
240    
241                    FileUtil.write(cacheFile, parsedContent);
242    
243                    cacheFile.setLastModified(file.lastModified());
244    
245                    return true;
246            }
247    
248            private RubyExecutor _rubyExecutor;
249            private String _rubyScript;
250            private String _tempDir;
251    
252    }