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.StringPool;
023    import com.liferay.portal.kernel.util.StringUtil;
024    import com.liferay.portal.kernel.util.SystemProperties;
025    import com.liferay.portal.kernel.util.UnsyncPrintWriterPool;
026    import com.liferay.portal.kernel.util.Validator;
027    import com.liferay.portal.model.ModelHintsConstants;
028    import com.liferay.portal.scripting.ruby.RubyExecutor;
029    import com.liferay.portal.servlet.filters.minifier.MinifierFilter;
030    import com.liferay.portal.util.FastDateFormatFactoryImpl;
031    import com.liferay.portal.util.FileImpl;
032    import com.liferay.portal.util.PortalImpl;
033    import com.liferay.portal.util.PortalUtil;
034    
035    import java.io.File;
036    
037    import java.util.ArrayList;
038    import java.util.HashMap;
039    import java.util.List;
040    import java.util.Map;
041    
042    import org.apache.tools.ant.DirectoryScanner;
043    
044    /**
045     * @author Brian Wing Shun Chan
046     */
047    public class SassToCssBuilder {
048    
049            public static File getCacheFile(String fileName) {
050                    fileName = StringUtil.replace(
051                            fileName, StringPool.BACK_SLASH, StringPool.SLASH);
052    
053                    int pos = fileName.lastIndexOf(StringPool.SLASH);
054    
055                    String cacheFileName =
056                            fileName.substring(0, pos + 1) + ".sass-cache/" +
057                                    fileName.substring(pos + 1);
058    
059                    return new File(cacheFileName);
060            }
061    
062            public static void main(String[] args) {
063                    Map<String, String> arguments = ArgumentsUtil.parseArguments(args);
064    
065                    List<String> dirNames = new ArrayList<String>();
066    
067                    String dirName = arguments.get("sass.dir");
068    
069                    if (Validator.isNotNull(dirName)) {
070                            dirNames.add(dirName);
071                    }
072                    else {
073                            for (int i = 0;; i++ ) {
074                                    dirName = arguments.get("sass.dir." + i);
075    
076                                    if (Validator.isNotNull(dirName)) {
077                                            dirNames.add(dirName);
078                                    }
079                                    else {
080                                            break;
081                                    }
082                            }
083                    }
084    
085                    try {
086                            new SassToCssBuilder(dirNames);
087                    }
088                    catch (Exception e) {
089                            e.printStackTrace();
090                    }
091            }
092    
093            public static String parseStaticTokens(String content) {
094                    return StringUtil.replace(
095                            content,
096                            new String[] {
097                                    "@model_hints_constants_text_display_height@",
098                                    "@model_hints_constants_text_display_width@",
099                                    "@model_hints_constants_textarea_display_height@",
100                                    "@model_hints_constants_textarea_display_width@"
101                            },
102                            new String[] {
103                                    ModelHintsConstants.TEXT_DISPLAY_HEIGHT,
104                                    ModelHintsConstants.TEXT_DISPLAY_WIDTH,
105                                    ModelHintsConstants.TEXTAREA_DISPLAY_HEIGHT,
106                                    ModelHintsConstants.TEXTAREA_DISPLAY_WIDTH
107                            });
108            }
109    
110            public SassToCssBuilder(List<String> dirNames) throws Exception {
111                    Class<?> clazz = getClass();
112    
113                    ClassLoader classLoader = clazz.getClassLoader();
114    
115                    _initUtil(classLoader);
116    
117                    _rubyScript = StringUtil.read(
118                            classLoader,
119                            "com/liferay/portal/servlet/filters/dynamiccss/main.rb");
120    
121                    _tempDir = SystemProperties.get(SystemProperties.TMP_DIR);
122    
123                    for (String dirName : dirNames) {
124    
125                            // Create a new Ruby executor as a workaround for a bug with Ruby
126                            // that breaks "ant build-css" when it parses too many CSS files
127    
128                            _rubyExecutor = new RubyExecutor();
129    
130                            _parseSassDirectory(dirName);
131                    }
132            }
133    
134            private String _getContent(File file) throws Exception {
135                    String content = FileUtil.read(file);
136    
137                    content = MinifierFilter.aggregateCss(file.getParent(), content);
138    
139                    return parseStaticTokens(content);
140            }
141    
142            private String _getCssThemePath(String fileName) {
143                    int pos = fileName.lastIndexOf("/css/");
144    
145                    return fileName.substring(0, pos + 4);
146            }
147    
148            private void _initUtil(ClassLoader classLoader) {
149                    FastDateFormatFactoryUtil fastDateFormatFactoryUtil =
150                            new FastDateFormatFactoryUtil();
151    
152                    fastDateFormatFactoryUtil.setFastDateFormatFactory(
153                            new FastDateFormatFactoryImpl());
154    
155                    FileUtil fileUtil = new FileUtil();
156    
157                    fileUtil.setFile(new FileImpl());
158    
159                    PortalClassLoaderUtil.setClassLoader(classLoader);
160    
161                    PortalUtil portalUtil = new PortalUtil();
162    
163                    portalUtil.setPortal(new PortalImpl());
164            }
165    
166            private void _parseSassDirectory(String dirName) throws Exception {
167                    DirectoryScanner directoryScanner = new DirectoryScanner();
168    
169                    directoryScanner.setBasedir(dirName);
170                    directoryScanner.setExcludes(
171                            new String[] {
172                                    "**\\_diffs\\**", "**\\.sass-cache*\\**",
173                                    "**\\.sass_cache_*\\**", "**\\_sass_cache_*\\**",
174                                    "**\\_styled\\**", "**\\_unstyled\\**"
175                            });
176                    directoryScanner.setIncludes(new String[] {"**\\*.css"});
177    
178                    directoryScanner.scan();
179    
180                    String[] fileNames = directoryScanner.getIncludedFiles();
181    
182                    for (String fileName : fileNames) {
183                            fileName = StringUtil.replace(
184                                    dirName + StringPool.SLASH + fileName, StringPool.BACK_SLASH,
185                                    StringPool.SLASH);
186    
187                            try {
188                                    long start = System.currentTimeMillis();
189    
190                                    if (_parseSassFile(fileName)) {
191                                            long end = System.currentTimeMillis();
192    
193                                            System.out.println(
194                                                    "Parsed " + fileName + " in " + (end - start) + " ms");
195                                    }
196                            }
197                            catch (Exception e) {
198                                    System.out.println("Unable to parse " + fileName);
199    
200                                    e.printStackTrace();
201                            }
202                    }
203            }
204    
205            private boolean _parseSassFile(String fileName) throws Exception {
206                    File file = new File(fileName);
207                    File cacheFile = getCacheFile(fileName);
208    
209                    if (file.lastModified() == cacheFile.lastModified()) {
210                            return false;
211                    }
212    
213                    Map<String, Object> inputObjects = new HashMap<String, Object>();
214    
215                    inputObjects.put("content", _getContent(file));
216                    inputObjects.put("cssRealPath", fileName);
217                    inputObjects.put("cssThemePath", _getCssThemePath(fileName));
218                    inputObjects.put("sassCachePath", _tempDir);
219    
220                    UnsyncByteArrayOutputStream unsyncByteArrayOutputStream =
221                            new UnsyncByteArrayOutputStream();
222    
223                    UnsyncPrintWriter unsyncPrintWriter = UnsyncPrintWriterPool.borrow(
224                            unsyncByteArrayOutputStream);
225    
226                    inputObjects.put("out", unsyncPrintWriter);
227    
228                    _rubyExecutor.eval(null, inputObjects, null, _rubyScript);
229    
230                    unsyncPrintWriter.flush();
231    
232                    String parsedContent = unsyncByteArrayOutputStream.toString();
233    
234                    FileUtil.write(cacheFile, parsedContent);
235    
236                    cacheFile.setLastModified(file.lastModified());
237    
238                    return true;
239            }
240    
241            private RubyExecutor _rubyExecutor;
242            private String _rubyScript;
243            private String _tempDir;
244    
245    }