001    /**
002     * Copyright (c) 2000-2013 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                            _rubyExecutor.setExecuteInSeparateThread(false);
135    
136                            _parseSassDirectory(dirName);
137                    }
138            }
139    
140            private String _getContent(File file) throws Exception {
141                    String content = FileUtil.read(file);
142    
143                    content = AggregateFilter.aggregateCss(
144                            new FileAggregateContext(file), content);
145    
146                    return parseStaticTokens(content);
147            }
148    
149            private String _getCssThemePath(String fileName) {
150                    int pos = fileName.lastIndexOf("/css/");
151    
152                    return fileName.substring(0, pos + 4);
153            }
154    
155            private void _initUtil(ClassLoader classLoader) {
156                    FastDateFormatFactoryUtil fastDateFormatFactoryUtil =
157                            new FastDateFormatFactoryUtil();
158    
159                    fastDateFormatFactoryUtil.setFastDateFormatFactory(
160                            new FastDateFormatFactoryImpl());
161    
162                    FileUtil fileUtil = new FileUtil();
163    
164                    fileUtil.setFile(new FileImpl());
165    
166                    PortalClassLoaderUtil.setClassLoader(classLoader);
167    
168                    PortalUtil portalUtil = new PortalUtil();
169    
170                    portalUtil.setPortal(new PortalImpl());
171    
172                    PropsUtil.setProps(new PropsImpl());
173            }
174    
175            private boolean _isModified(String dirName, String[] fileNames)
176                    throws Exception {
177    
178                    for (String fileName : fileNames) {
179                            fileName = _normalizeFileName(dirName, fileName);
180    
181                            File file = new File(fileName);
182                            File cacheFile = getCacheFile(fileName);
183    
184                            if (file.lastModified() != cacheFile.lastModified()) {
185                                    return true;
186                            }
187                    }
188    
189                    return false;
190            }
191    
192            private String _normalizeFileName(String dirName, String fileName) {
193                    return StringUtil.replace(
194                            dirName + StringPool.SLASH + fileName, StringPool.BACK_SLASH,
195                            StringPool.SLASH);
196            }
197    
198            private void _parseSassDirectory(String dirName) throws Exception {
199                    DirectoryScanner directoryScanner = new DirectoryScanner();
200    
201                    directoryScanner.setBasedir(dirName);
202                    directoryScanner.setExcludes(
203                            new String[] {
204                                    "**\\_diffs\\**", "**\\.sass-cache*\\**",
205                                    "**\\.sass_cache_*\\**", "**\\_sass_cache_*\\**",
206                                    "**\\_styled\\**", "**\\_unstyled\\**"
207                            });
208                    directoryScanner.setIncludes(new String[] {"**\\*.css"});
209    
210                    directoryScanner.scan();
211    
212                    String[] fileNames = directoryScanner.getIncludedFiles();
213    
214                    if (!_isModified(dirName, fileNames)) {
215                            return;
216                    }
217    
218                    for (String fileName : fileNames) {
219                            fileName = _normalizeFileName(dirName, fileName);
220    
221                            try {
222                                    long start = System.currentTimeMillis();
223    
224                                    _parseSassFile(fileName);
225    
226                                    long end = System.currentTimeMillis();
227    
228                                    System.out.println(
229                                            "Parsed " + fileName + " in " + (end - start) + " ms");
230                            }
231                            catch (Exception e) {
232                                    System.out.println("Unable to parse " + fileName);
233    
234                                    e.printStackTrace();
235                            }
236                    }
237            }
238    
239            private void _parseSassFile(String fileName) throws Exception {
240                    File file = new File(fileName);
241                    File cacheFile = getCacheFile(fileName);
242    
243                    Map<String, Object> inputObjects = new HashMap<String, Object>();
244    
245                    inputObjects.put("content", _getContent(file));
246                    inputObjects.put("cssRealPath", fileName);
247                    inputObjects.put("cssThemePath", _getCssThemePath(fileName));
248                    inputObjects.put("sassCachePath", _tempDir);
249    
250                    UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
251                            new UnsyncByteArrayOutputStream();
252    
253                    UnsyncPrintWriter unsyncPrintWriter = UnsyncPrintWriterPool.borrow(
254                            unsyncByteArrayOutputStream);
255    
256                    inputObjects.put("out", unsyncPrintWriter);
257    
258                    _rubyExecutor.eval(null, inputObjects, null, _rubyScript);
259    
260                    unsyncPrintWriter.flush();
261    
262                    String parsedContent = unsyncByteArrayOutputStream.toString();
263    
264                    FileUtil.write(cacheFile, parsedContent);
265    
266                    cacheFile.setLastModified(file.lastModified());
267            }
268    
269            private RubyExecutor _rubyExecutor;
270            private String _rubyScript;
271            private String _tempDir;
272    
273    }