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- /*
- * Copyright (C) 2010, Red Hat Inc.
- * 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.attributes;
-
- import static org.eclipse.jgit.ignore.internal.IMatcher.NO_MATCH;
-
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
-
- import org.eclipse.jgit.attributes.Attribute.State;
- import org.eclipse.jgit.errors.InvalidPatternException;
- import org.eclipse.jgit.ignore.FastIgnoreRule;
- import org.eclipse.jgit.ignore.internal.IMatcher;
- import org.eclipse.jgit.ignore.internal.PathMatcher;
-
- /**
- * A single attributes rule corresponding to one line in a .gitattributes file.
- *
- * Inspiration from: {@link FastIgnoreRule}
- *
- * @since 3.7
- */
- public class AttributesRule {
-
- /**
- * regular expression for splitting attributes - space, tab and \r (the C
- * implementation oddly enough allows \r between attributes)
- * */
- private static final String ATTRIBUTES_SPLIT_REGEX = "[ \t\r]"; //$NON-NLS-1$
-
- private static List<Attribute> parseAttributes(String attributesLine) {
- // the C implementation oddly enough allows \r between attributes too.
- ArrayList<Attribute> result = new ArrayList<Attribute>();
- for (String attribute : attributesLine.split(ATTRIBUTES_SPLIT_REGEX)) {
- attribute = attribute.trim();
- if (attribute.length() == 0)
- continue;
-
- if (attribute.startsWith("-")) {//$NON-NLS-1$
- if (attribute.length() > 1)
- result.add(new Attribute(attribute.substring(1),
- State.UNSET));
- continue;
- }
-
- if (attribute.startsWith("!")) {//$NON-NLS-1$
- if (attribute.length() > 1)
- result.add(new Attribute(attribute.substring(1),
- State.UNSPECIFIED));
- continue;
- }
-
- final int equalsIndex = attribute.indexOf("="); //$NON-NLS-1$
- if (equalsIndex == -1)
- result.add(new Attribute(attribute, State.SET));
- else {
- String attributeKey = attribute.substring(0, equalsIndex);
- if (attributeKey.length() > 0) {
- String attributeValue = attribute
- .substring(equalsIndex + 1);
- result.add(new Attribute(attributeKey, attributeValue));
- }
- }
- }
- return result;
- }
-
- private final String pattern;
- private final List<Attribute> attributes;
-
- private final boolean nameOnly;
-
- private final boolean dirOnly;
-
- private final IMatcher matcher;
-
- /**
- * Create a new attribute rule with the given pattern. Assumes that the
- * pattern is already trimmed.
- *
- * @param pattern
- * Base pattern for the attributes rule. This pattern will be
- * parsed to generate rule parameters. It can not be
- * <code>null</code>.
- * @param attributes
- * the rule attributes. This string will be parsed to read the
- * attributes.
- */
- public AttributesRule(String pattern, String attributes) {
- this.attributes = parseAttributes(attributes);
-
- if (pattern.endsWith("/")) { //$NON-NLS-1$
- pattern = pattern.substring(0, pattern.length() - 1);
- dirOnly = true;
- } else {
- dirOnly = false;
- }
-
- int slashIndex = pattern.indexOf('/');
-
- if (slashIndex < 0) {
- nameOnly = true;
- } else if (slashIndex == 0) {
- nameOnly = false;
- } else {
- nameOnly = false;
- // Contains "/" but does not start with one
- // Adding / to the start should not interfere with matching
- pattern = "/" + pattern; //$NON-NLS-1$
- }
-
- IMatcher candidateMatcher = NO_MATCH;
- try {
- candidateMatcher = PathMatcher.createPathMatcher(pattern,
- Character.valueOf(FastIgnoreRule.PATH_SEPARATOR), dirOnly);
- } catch (InvalidPatternException e) {
- // ignore: invalid patterns are silently ignored
- }
- this.matcher = candidateMatcher;
- this.pattern = pattern;
- }
-
- /**
- * @return True if the pattern should match directories only
- * @since 4.3
- */
- public boolean isDirOnly() {
- return dirOnly;
- }
-
- /**
- * Returns the attributes.
- *
- * @return an unmodifiable list of attributes (never returns
- * <code>null</code>)
- */
- public List<Attribute> getAttributes() {
- return Collections.unmodifiableList(attributes);
- }
-
- /**
- * @return <code>true</code> if the pattern is just a file name and not a
- * path
- */
- public boolean isNameOnly() {
- return nameOnly;
- }
-
- /**
- * @return The blob pattern to be used as a matcher (never returns
- * <code>null</code>)
- */
- public String getPattern() {
- return pattern;
- }
-
- /**
- * Returns <code>true</code> if a match was made.
- *
- * @param relativeTarget
- * Name pattern of the file, relative to the base directory of
- * this rule
- * @param isDirectory
- * Whether the target file is a directory or not
- * @return True if a match was made.
- */
- public boolean isMatch(String relativeTarget, boolean isDirectory) {
- if (relativeTarget == null)
- return false;
- if (relativeTarget.length() == 0)
- return false;
- boolean match = matcher.matches(relativeTarget, isDirectory);
- return match;
- }
-
- @Override
- public String toString() {
- StringBuilder sb = new StringBuilder();
- sb.append(pattern);
- for (Attribute a : attributes) {
- sb.append(" "); //$NON-NLS-1$
- sb.append(a);
- }
- return sb.toString();
-
- }
- }
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