| /* |
| * 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 freemarker.cache; |
| |
| import java.io.IOException; |
| |
| /** |
| * Matches the file extension; unlike other matchers, by default case <em>insensitive</em>. A name (a path) is |
| * considered to have the given extension exactly if it ends with a dot plus the extension. |
| * |
| * @since 2.3.24 |
| */ |
| public class FileExtensionMatcher extends TemplateSourceMatcher { |
| |
| private final String extension; |
| private boolean caseInsensitive = true; |
| |
| /** |
| * @param extension |
| * The file extension (without the initial dot). Can't contain there characters: |
| * {@code '/'}, {@code '*'}, {@code '?'}. May contains {@code '.'}, but can't start with it. |
| */ |
| public FileExtensionMatcher(String extension) { |
| if (extension.indexOf('/') != -1) { |
| throw new IllegalArgumentException("A file extension can't contain \"/\": " + extension); |
| } |
| if (extension.indexOf('*') != -1) { |
| throw new IllegalArgumentException("A file extension can't contain \"*\": " + extension); |
| } |
| if (extension.indexOf('?') != -1) { |
| throw new IllegalArgumentException("A file extension can't contain \"*\": " + extension); |
| } |
| if (extension.startsWith(".")) { |
| throw new IllegalArgumentException("A file extension can't start with \".\": " + extension); |
| } |
| this.extension = extension; |
| } |
| |
| @Override |
| public boolean matches(String sourceName, Object templateSource) throws IOException { |
| int ln = sourceName.length(); |
| int extLn = extension.length(); |
| if (ln < extLn + 1 || sourceName.charAt(ln - extLn - 1) != '.') { |
| return false; |
| } |
| |
| return sourceName.regionMatches(caseInsensitive, ln - extLn, extension, 0, extLn); |
| } |
| |
| public boolean isCaseInsensitive() { |
| return caseInsensitive; |
| } |
| |
| /** |
| * Sets if the matching will be case insensitive (UNICODE compliant); default is {@code true}. |
| */ |
| public void setCaseInsensitive(boolean caseInsensitive) { |
| this.caseInsensitive = caseInsensitive; |
| } |
| |
| /** |
| * Fluid API variation of {@link #setCaseInsensitive(boolean)} |
| */ |
| public FileExtensionMatcher caseInsensitive(boolean caseInsensitive) { |
| setCaseInsensitive(caseInsensitive); |
| return this; |
| } |
| |
| } |