ohair@286: /*
ohair@286:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.tools.internal.jxc;
ohair@286: 
ohair@286: import java.io.File;
ohair@286: import java.util.ArrayList;
ohair@286: import java.util.List;
ohair@286: import java.util.regex.Pattern;
ohair@286: 
ohair@286: import com.sun.tools.internal.jxc.gen.config.NGCCRuntime;
ohair@286: 
ohair@286: import org.xml.sax.ErrorHandler;
ohair@286: import org.xml.sax.SAXException;
ohair@286: import org.xml.sax.SAXParseException;
ohair@286: 
ohair@286: 
ohair@286: /**
ohair@286:  * Controls the  validating and converting  of values obtained
ohair@286:  * from the config file.
ohair@286:  *
ohair@286:  * @author
ohair@286:  *     Bhakti Mehta (bhakti.mehta@sun.com)
ohair@286:  */
ohair@286: public final class NGCCRuntimeEx extends NGCCRuntime {
ohair@286:     /**
ohair@286:      * All the errors shall be sent to this object.
ohair@286:      */
ohair@286:     private final ErrorHandler errorHandler;
ohair@286: 
ohair@286:     public NGCCRuntimeEx(ErrorHandler errorHandler) {
ohair@286:         this.errorHandler = errorHandler;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      *  This will check if the baseDir provided by the user
ohair@286:      *  in the config file exists. If not it throws an error
ohair@286:      * @param baseDir
ohair@286:      *    The baseDir attribute passed by the user in the xml config file as a path
ohair@286:      * @return
ohair@286:      *     The file representation of the path name
ohair@286:      */
ohair@286:     public File getBaseDir(String baseDir) throws SAXException {
ohair@286:         File dir = new File(baseDir);
ohair@286:         if (dir.exists()) {
ohair@286:             return dir;
ohair@286:         } else {
ohair@286:             SAXParseException e = new SAXParseException(
ohair@286:                                 Messages.BASEDIR_DOESNT_EXIST.format(dir.getAbsolutePath()),
ohair@286:                                 getLocator());
ohair@286:             errorHandler.error(e);
ohair@286:             throw e;    // we can't recover from this error
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * This takes the include list provided by the user in the config file
ohair@286:      * It converts the user values to {@link Pattern}
ohair@286:      * @param includeContent
ohair@286:      *        The include list specified by the user
ohair@286:      * @return
ohair@286:      *        A list of regular expression patterns {@link Pattern}
ohair@286:      */
alanb@368:     public List<Pattern> getIncludePatterns(List<String> includeContent ) {
ohair@286:         List<Pattern> includeRegexList = new ArrayList<Pattern>();
alanb@368:         for (String includes : includeContent) {
ohair@286:             String regex = convertToRegex(includes);
ohair@286:             Pattern pattern = Pattern.compile(regex);
ohair@286:             includeRegexList.add(pattern);
ohair@286:         }
ohair@286:         return includeRegexList;
ohair@286:     }
ohair@286: 
ohair@286: 
ohair@286:     /**
ohair@286:      * This takes the exclude list provided by the user in the config file
ohair@286:      * It converts the user values to {@link Pattern}
ohair@286:      * @param excludeContent
ohair@286:      *        The exclude list specified by the user
ohair@286:      * @return
ohair@286:      *        A list of regular expression patterns {@link Pattern}
ohair@286:      */
alanb@368:     public List getExcludePatterns(List<String> excludeContent ) {
alanb@368:         List<Pattern> excludeRegexList = new ArrayList<Pattern>();
alanb@368:         for (String excludes : excludeContent) {
ohair@286:             String regex = convertToRegex(excludes);
ohair@286:             Pattern pattern = Pattern.compile(regex);
ohair@286:             excludeRegexList.add(pattern);
ohair@286:         }
ohair@286:         return excludeRegexList;
ohair@286:     }
ohair@286: 
ohair@286: 
ohair@286:     /**
ohair@286:      * This will tokenize the pattern and convert it into a regular expression
ohair@286:      * @param pattern
ohair@286:      */
ohair@286:     private String convertToRegex(String pattern) {
ohair@286:         StringBuilder regex = new StringBuilder();
ohair@286:         char nc = ' ';
ohair@286:         if (pattern.length() >0 ) {
ohair@286: 
ohair@286:             for ( int i = 0 ; i < pattern.length(); i ++ ) {
ohair@286:                 char c = pattern.charAt(i);
ohair@286:                 nc = ' ';
alanb@368:                 if ((i +1) != pattern.length()) {
alanb@368:                     nc = pattern.charAt(i +1);
ohair@286:                 }
ohair@286:                 //escape single '.'
alanb@368:                 if (c == '.' &&  nc != '.'){
ohair@286:                     regex.append('\\');
ohair@286:                     regex.append('.');
ohair@286:                     //do not allow patterns like a..b
alanb@368:                 } else if (c == '.'){
ohair@286:                     continue;
ohair@286:                     // "**" gets replaced by ".*"
ohair@286:                 } else if ((c=='*') && (nc == '*')) {
ohair@286:                     regex.append(".*");
ohair@286:                     break;
ohair@286:                     //'*' replaced by anything but '.' i.e [^\\.]+
ohair@286:                 } else if (c=='*') {
ohair@286:                     regex.append("[^\\.]+");
ohair@286:                     continue;
ohair@286:                     //'?' replaced by anything but '.' i.e [^\\.]
ohair@286:                 } else if (c=='?') {
ohair@286:                     regex.append("[^\\.]");
ohair@286:                     //else leave the chars as they occur in the pattern
ohair@286:                 } else
ohair@286:                     regex.append(c);
ohair@286:             }
ohair@286: 
ohair@286:         }
ohair@286: 
ohair@286:         return regex.toString();
ohair@286:     }
ohair@286: 
ohair@286:     protected void unexpectedX(String token) throws SAXException {
ohair@286:         errorHandler.error(
ohair@286:             new SAXParseException(Messages.UNEXPECTED_NGCC_TOKEN.format(
ohair@286:                 token, getLocator().getLineNumber(), getLocator().getColumnNumber()),
ohair@286:                 getLocator()));
ohair@286:     }
ohair@286: }