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- /*
- * Copyright (C) 2008, Florian Koeberle <florianskarten@web.de>
- * Copyright (C) 2008, Florian Köberle <florianskarten@web.de>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.fnmatch;
-
- import java.text.MessageFormat;
- import java.util.ArrayList;
- import java.util.List;
- import java.util.regex.Matcher;
- import java.util.regex.Pattern;
-
- import org.eclipse.jgit.errors.InvalidPatternException;
- import org.eclipse.jgit.internal.JGitText;
-
- final class GroupHead extends AbstractHead {
- private final List<CharacterPattern> characterClasses;
-
- private static final Pattern REGEX_PATTERN = Pattern
- .compile("([^-][-][^-]|\\[[.:=].*?[.:=]\\])"); //$NON-NLS-1$
-
- private final boolean inverse;
-
- GroupHead(String pattern, final String wholePattern)
- throws InvalidPatternException {
- super(false);
- this.characterClasses = new ArrayList<CharacterPattern>();
- this.inverse = pattern.startsWith("!"); //$NON-NLS-1$
- if (inverse) {
- pattern = pattern.substring(1);
- }
- final Matcher matcher = REGEX_PATTERN.matcher(pattern);
- while (matcher.find()) {
- final String characterClass = matcher.group(0);
- if (characterClass.length() == 3 && characterClass.charAt(1) == '-') {
- final char start = characterClass.charAt(0);
- final char end = characterClass.charAt(2);
- characterClasses.add(new CharacterRange(start, end));
- } else if (characterClass.equals("[:alnum:]")) { //$NON-NLS-1$
- characterClasses.add(LetterPattern.INSTANCE);
- characterClasses.add(DigitPattern.INSTANCE);
- } else if (characterClass.equals("[:alpha:]")) { //$NON-NLS-1$
- characterClasses.add(LetterPattern.INSTANCE);
- } else if (characterClass.equals("[:blank:]")) { //$NON-NLS-1$
- characterClasses.add(new OneCharacterPattern(' '));
- characterClasses.add(new OneCharacterPattern('\t'));
- } else if (characterClass.equals("[:cntrl:]")) { //$NON-NLS-1$
- characterClasses.add(new CharacterRange('\u0000', '\u001F'));
- characterClasses.add(new OneCharacterPattern('\u007F'));
- } else if (characterClass.equals("[:digit:]")) { //$NON-NLS-1$
- characterClasses.add(DigitPattern.INSTANCE);
- } else if (characterClass.equals("[:graph:]")) { //$NON-NLS-1$
- characterClasses.add(new CharacterRange('\u0021', '\u007E'));
- characterClasses.add(LetterPattern.INSTANCE);
- characterClasses.add(DigitPattern.INSTANCE);
- } else if (characterClass.equals("[:lower:]")) { //$NON-NLS-1$
- characterClasses.add(LowerPattern.INSTANCE);
- } else if (characterClass.equals("[:print:]")) { //$NON-NLS-1$
- characterClasses.add(new CharacterRange('\u0020', '\u007E'));
- characterClasses.add(LetterPattern.INSTANCE);
- characterClasses.add(DigitPattern.INSTANCE);
- } else if (characterClass.equals("[:punct:]")) { //$NON-NLS-1$
- characterClasses.add(PunctPattern.INSTANCE);
- } else if (characterClass.equals("[:space:]")) { //$NON-NLS-1$
- characterClasses.add(WhitespacePattern.INSTANCE);
- } else if (characterClass.equals("[:upper:]")) { //$NON-NLS-1$
- characterClasses.add(UpperPattern.INSTANCE);
- } else if (characterClass.equals("[:xdigit:]")) { //$NON-NLS-1$
- characterClasses.add(new CharacterRange('0', '9'));
- characterClasses.add(new CharacterRange('a', 'f'));
- characterClasses.add(new CharacterRange('A', 'F'));
- } else if (characterClass.equals("[:word:]")) { //$NON-NLS-1$
- characterClasses.add(new OneCharacterPattern('_'));
- characterClasses.add(LetterPattern.INSTANCE);
- characterClasses.add(DigitPattern.INSTANCE);
- } else {
- final String message = String.format(MessageFormat.format(
- JGitText.get().characterClassIsNotSupported,
- characterClass));
- throw new InvalidPatternException(message, wholePattern);
- }
-
- pattern = matcher.replaceFirst(""); //$NON-NLS-1$
- matcher.reset(pattern);
- }
- // pattern contains now no ranges
- for (int i = 0; i < pattern.length(); i++) {
- final char c = pattern.charAt(i);
- characterClasses.add(new OneCharacterPattern(c));
- }
- }
-
- @Override
- protected final boolean matches(final char c) {
- for (CharacterPattern pattern : characterClasses) {
- if (pattern.matches(c)) {
- return !inverse;
- }
- }
- return inverse;
- }
-
- private interface CharacterPattern {
- /**
- * @param c
- * the character to test
- * @return returns true if the character matches a pattern.
- */
- boolean matches(char c);
- }
-
- private static final class CharacterRange implements CharacterPattern {
- private final char start;
-
- private final char end;
-
- CharacterRange(char start, char end) {
- this.start = start;
- this.end = end;
- }
-
- public final boolean matches(char c) {
- return start <= c && c <= end;
- }
- }
-
- private static final class DigitPattern implements CharacterPattern {
- static final GroupHead.DigitPattern INSTANCE = new DigitPattern();
-
- public final boolean matches(char c) {
- return Character.isDigit(c);
- }
- }
-
- private static final class LetterPattern implements CharacterPattern {
- static final GroupHead.LetterPattern INSTANCE = new LetterPattern();
-
- public final boolean matches(char c) {
- return Character.isLetter(c);
- }
- }
-
- private static final class LowerPattern implements CharacterPattern {
- static final GroupHead.LowerPattern INSTANCE = new LowerPattern();
-
- public final boolean matches(char c) {
- return Character.isLowerCase(c);
- }
- }
-
- private static final class UpperPattern implements CharacterPattern {
- static final GroupHead.UpperPattern INSTANCE = new UpperPattern();
-
- public final boolean matches(char c) {
- return Character.isUpperCase(c);
- }
- }
-
- private static final class WhitespacePattern implements CharacterPattern {
- static final GroupHead.WhitespacePattern INSTANCE = new WhitespacePattern();
-
- public final boolean matches(char c) {
- return Character.isWhitespace(c);
- }
- }
-
- private static final class OneCharacterPattern implements CharacterPattern {
- private char expectedCharacter;
-
- OneCharacterPattern(final char c) {
- this.expectedCharacter = c;
- }
-
- public final boolean matches(char c) {
- return this.expectedCharacter == c;
- }
- }
-
- private static final class PunctPattern implements CharacterPattern {
- static final GroupHead.PunctPattern INSTANCE = new PunctPattern();
-
- private static String punctCharacters = "-!\"#$%&'()*+,./:;<=>?@[\\]_`{|}~"; //$NON-NLS-1$
-
- public boolean matches(char c) {
- return punctCharacters.indexOf(c) != -1;
- }
- }
-
- }
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