| /* |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> |
| * 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.revwalk.filter; |
| |
| import java.io.IOException; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.util.RawCharSequence; |
| import org.eclipse.jgit.util.RawSubStringPattern; |
| |
| /** |
| * Abstract filter that searches text using only substring search. |
| */ |
| public abstract class SubStringRevFilter extends RevFilter { |
| /** |
| * Can this string be safely handled by a substring filter? |
| * |
| * @param pattern |
| * the pattern text proposed by the user. |
| * @return true if a substring filter can perform this pattern match; false |
| * if {@link org.eclipse.jgit.revwalk.filter.PatternMatchRevFilter} |
| * must be used instead. |
| */ |
| public static boolean safe(String pattern) { |
| for (int i = 0; i < pattern.length(); i++) { |
| final char c = pattern.charAt(i); |
| switch (c) { |
| case '.': |
| case '?': |
| case '*': |
| case '+': |
| case '{': |
| case '}': |
| case '(': |
| case ')': |
| case '[': |
| case ']': |
| case '\\': |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private final RawSubStringPattern pattern; |
| |
| /** |
| * Construct a new matching filter. |
| * |
| * @param patternText |
| * text to locate. This should be a safe string as described by |
| * the {@link #safe(String)} as regular expression meta |
| * characters are treated as literals. |
| */ |
| protected SubStringRevFilter(String patternText) { |
| pattern = new RawSubStringPattern(patternText); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean include(RevWalk walker, RevCommit cmit) |
| throws MissingObjectException, IncorrectObjectTypeException, |
| IOException { |
| return pattern.match(text(cmit)) >= 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean requiresCommitBody() { |
| return true; |
| } |
| |
| /** |
| * Obtain the raw text to match against. |
| * |
| * @param cmit |
| * current commit being evaluated. |
| * @return sequence for the commit's content that we need to match on. |
| */ |
| protected abstract RawCharSequence text(RevCommit cmit); |
| |
| /** {@inheritDoc} */ |
| @Override |
| public RevFilter clone() { |
| return this; // Typically we are actually thread-safe. |
| } |
| |
| /** {@inheritDoc} */ |
| @SuppressWarnings("nls") |
| @Override |
| public String toString() { |
| return super.toString() + "(\"" + pattern.pattern() + "\")"; |
| } |
| } |