| /* |
| * 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.freemarker.generator.base.document; |
| |
| import org.apache.freemarker.generator.base.file.RecursiveFileSupplier; |
| |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.nio.charset.Charset; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.function.Supplier; |
| |
| import static java.util.Collections.singletonList; |
| import static java.util.Objects.requireNonNull; |
| import static java.util.stream.Collectors.toList; |
| |
| /** |
| * Create a list of <code>Document</code> based on a list of sources consisting of |
| * URLs, directories and files. |
| */ |
| public class DocumentsSupplier implements Supplier<List<Document>> { |
| |
| /** List of source files and/or directories */ |
| private final Collection<String> sources; |
| |
| /** Optional include pattern for resolving source files or directory */ |
| private final String include; |
| |
| /** Optional exclude pattern for resolving source files or directory */ |
| private final String exclude; |
| |
| /** The charset for loading text files */ |
| private final Charset charset; |
| |
| /** |
| * Constructor. |
| * |
| * @param sources List of source files and/or directories |
| * @param include Optional include pattern for resolving source files or directory |
| * @param charset The charset for loading text files |
| */ |
| public DocumentsSupplier(Collection<String> sources, String include, String exclude, Charset charset) { |
| this.sources = new ArrayList<>(sources); |
| this.include = include; |
| this.exclude = exclude; |
| this.charset = requireNonNull(charset); |
| } |
| |
| @Override |
| public List<Document> get() { |
| return sources.stream() |
| .map(this::get) |
| .flatMap(Collection::stream) |
| .collect(toList()); |
| } |
| |
| private List<Document> get(String source) { |
| if (isHttpUrl(source)) { |
| return singletonList(resolveHttpUrl(source)); |
| } else { |
| return resolveFile(source, include, exclude, charset); |
| } |
| } |
| |
| private static Document resolveHttpUrl(String url) { |
| return DocumentFactory.create(toUrl(url)); |
| } |
| |
| private static List<Document> resolveFile(String source, String include, String exclude, Charset charset) { |
| return fileResolver(source, include, exclude).get().stream() |
| .map(file -> DocumentFactory.create(file, charset)) |
| .collect(toList()); |
| } |
| |
| private static RecursiveFileSupplier fileResolver(String source, String include, String exclude) { |
| return new RecursiveFileSupplier(singletonList(source), singletonList(include), singletonList(exclude)); |
| } |
| |
| private static boolean isHttpUrl(String value) { |
| return value.startsWith("http://") || value.startsWith("https://"); |
| } |
| |
| private static URL toUrl(String value) { |
| try { |
| return new URL(value); |
| } catch (MalformedURLException e) { |
| throw new IllegalArgumentException(value, e); |
| } |
| } |
| } |