| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.tools.ant.types.selectors; |
| |
| import java.io.File; |
| |
| /** |
| * Provides reusable path pattern matching. PathPattern is preferable |
| * to equivalent SelectorUtils methods if you need to execute multiple |
| * matching with the same pattern because here the pattern itself will |
| * be parsed only once. |
| * @see SelectorUtils#matchPath(String, String) |
| * @see SelectorUtils#matchPath(String, String, boolean) |
| * @since 1.8.0 |
| */ |
| public class TokenizedPattern { |
| |
| /** |
| * Instance that holds no tokens at all. |
| */ |
| public static final TokenizedPattern EMPTY_PATTERN = |
| new TokenizedPattern("", new String[0]); |
| |
| private final String pattern; |
| private final String[] tokenizedPattern; |
| |
| /** |
| * Initialize the PathPattern by parsing it. |
| * @param pattern The pattern to match against. Must not be |
| * <code>null</code>. |
| */ |
| public TokenizedPattern(String pattern) { |
| this(pattern, SelectorUtils.tokenizePathAsArray(pattern)); |
| } |
| |
| TokenizedPattern(String pattern, String[] tokens) { |
| this.pattern = pattern; |
| this.tokenizedPattern = tokens; |
| } |
| |
| /** |
| * Tests whether or not a given path matches a given pattern. |
| * |
| * @param path The path to match, as a String. Must not be |
| * <code>null</code>. |
| * @param isCaseSensitive Whether or not matching should be performed |
| * case sensitively. |
| * |
| * @return <code>true</code> if the pattern matches against the string, |
| * or <code>false</code> otherwise. |
| */ |
| public boolean matchPath(TokenizedPath path, boolean isCaseSensitive) { |
| return SelectorUtils.matchPath(tokenizedPattern, path.getTokens(), |
| isCaseSensitive); |
| } |
| |
| /** |
| * Tests whether or not this pattern matches the start of |
| * a path. |
| * |
| * @param path TokenizedPath |
| * @param caseSensitive boolean |
| * @return boolean |
| */ |
| public boolean matchStartOf(TokenizedPath path, |
| boolean caseSensitive) { |
| return SelectorUtils.matchPatternStart(tokenizedPattern, |
| path.getTokens(), caseSensitive); |
| } |
| |
| /** |
| * @return The pattern String |
| */ |
| public String toString() { |
| return pattern; |
| } |
| |
| public String getPattern() { |
| return pattern; |
| } |
| |
| /** |
| * true if the original patterns are equal. |
| * |
| * @param o Object |
| */ |
| public boolean equals(Object o) { |
| return o instanceof TokenizedPattern |
| && pattern.equals(((TokenizedPattern) o).pattern); |
| } |
| |
| public int hashCode() { |
| return pattern.hashCode(); |
| } |
| |
| /** |
| * The depth (or length) of a pattern. |
| * |
| * @return int |
| */ |
| public int depth() { |
| return tokenizedPattern.length; |
| } |
| |
| /** |
| * Does the tokenized pattern contain the given string? |
| * |
| * @param pat String |
| * @return boolean |
| */ |
| public boolean containsPattern(String pat) { |
| for (int i = 0; i < tokenizedPattern.length; i++) { |
| if (tokenizedPattern[i].equals(pat)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns a new TokenizedPath where all tokens of this pattern to |
| * the right containing wildcards have been removed |
| * |
| * @return the leftmost part of the pattern without wildcards |
| */ |
| public TokenizedPath rtrimWildcardTokens() { |
| StringBuilder sb = new StringBuilder(); |
| int newLen = 0; |
| for (; newLen < tokenizedPattern.length; newLen++) { |
| if (SelectorUtils.hasWildcards(tokenizedPattern[newLen])) { |
| break; |
| } |
| if (newLen > 0 |
| && sb.charAt(sb.length() - 1) != File.separatorChar) { |
| sb.append(File.separator); |
| } |
| sb.append(tokenizedPattern[newLen]); |
| } |
| if (newLen == 0) { |
| return TokenizedPath.EMPTY_PATH; |
| } |
| String[] newPats = new String[newLen]; |
| System.arraycopy(tokenizedPattern, 0, newPats, 0, newLen); |
| return new TokenizedPath(sb.toString(), newPats); |
| } |
| |
| /** |
| * true if the last token equals the given string. |
| * |
| * @param s String |
| * @return boolean |
| */ |
| public boolean endsWith(String s) { |
| return tokenizedPattern.length > 0 |
| && tokenizedPattern[tokenizedPattern.length - 1].equals(s); |
| } |
| |
| /** |
| * Returns a new pattern without the last token of this pattern. |
| * |
| * @return TokenizedPattern |
| */ |
| public TokenizedPattern withoutLastToken() { |
| if (tokenizedPattern.length == 0) { |
| throw new IllegalStateException("can't strip a token from nothing"); |
| } else if (tokenizedPattern.length == 1) { |
| return EMPTY_PATTERN; |
| } else { |
| String toStrip = tokenizedPattern[tokenizedPattern.length - 1]; |
| int index = pattern.lastIndexOf(toStrip); |
| String[] tokens = new String[tokenizedPattern.length - 1]; |
| System.arraycopy(tokenizedPattern, 0, tokens, 0, |
| tokenizedPattern.length - 1); |
| return new TokenizedPattern(pattern.substring(0, index), tokens); |
| } |
| } |
| |
| } |