001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.cnd.api.utils;
043:
044: import java.util.regex.Pattern;
045: import java.util.regex.PatternSyntaxException;
046:
047: /**
048: * A Unix Regular Expression is one using the standard Unix shell syntax. Its
049: * less powerfull than the full Posix RE but the expected behavior for file
050: * filters.
051: */
052: public class UnixRE {
053:
054: /** the UnixRE is stored as a regexp RE */
055: Pattern re;
056:
057: /** Save a copy of the original pattern */
058: boolean starPattern;
059:
060: boolean debugRE = false;
061:
062: public UnixRE(String pattern) throws PatternSyntaxException {
063: StringBuffer unixText = new StringBuffer(256);
064: char prev = 0;
065:
066: if (Boolean.getBoolean("ifdef.debug.unixre") && // NOI18N
067: pattern.startsWith("[[[")) { // NOI18N
068: // OLD re = new RE(pattern.substring(3));
069: re = Pattern.compile(pattern.substring(3));
070: return;
071: }
072:
073: if (pattern.charAt(0) == '*') {
074: starPattern = true;
075: } else {
076: starPattern = false;
077: }
078:
079: // TODO: Escape all regexp magic chars that UnixRE doesn't want glob'ed
080: unixText.append('^');
081: for (int i = 0; i < pattern.length(); i++) {
082: char c = pattern.charAt(i);
083:
084: if (c == '*' && prev != '\\') {
085: unixText.append(".*"); // NOI18N
086: } else if (c == '?' && prev != '\\') {
087: unixText.append(".{1}"); // NOI18N
088: } else if (c == '.' && prev != '\\') {
089: unixText.append("\\."); // NOI18N
090: } else {
091: unixText.append(c);
092: }
093: prev = c;
094: }
095: unixText.append('$');
096:
097: // OLD re = new RE(unixText.toString());
098: re = Pattern.compile(unixText.toString());
099: }
100:
101: public boolean match(String s) {
102:
103: if (starPattern && s.charAt(0) == '.') {
104: return false;
105: } else {
106: return re.matcher(s).find();
107: }
108: }
109:
110: /**
111: * Tells if the string is a Unix regular expression.
112: */
113: static public boolean isUnixRE(String s) {
114: char prev = 0; // previous character
115: char c; // current character
116:
117: for (int i = 0; i < s.length(); i++) {
118: c = s.charAt(i);
119: if ((c == '*' || c == '?' || c == '[' || c == ']')
120: && prev != '\\') {
121: return true;
122: }
123: prev = c;
124: }
125:
126: return false;
127: }
128: }
|