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+/*
+ * Copyright (C) 2007-2010 JĂșlio Vilmar Gesser.
+ * Copyright (C) 2011, 2013-2016 The JavaParser Team.
+ *
+ * This file is part of JavaParser.
+ *
+ * JavaParser can be used either under the terms of
+ * a) the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * b) the terms of the Apache License
+ *
+ * You should have received a copy of both licenses in LICENCE.LGPL and
+ * LICENCE.APACHE. Please refer to those files for details.
+ *
+ * JavaParser is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ */
+
+package com.github.javaparser;
+
+import java.io.*;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static com.github.javaparser.utils.Utils.assertNotNull;
+
+/**
+ * Factory for providers of source code for JavaParser. Providers that have no parameter for encoding but need it will
+ * use UTF-8.
+ */
+public final class Providers {
+ public static final Charset UTF8 = Charset.forName("utf-8");
+
+ private Providers() {
+ }
+
+ public static Provider provider(Reader reader) {
+ return new StreamProvider(assertNotNull(reader));
+ }
+
+ public static Provider provider(InputStream input, Charset encoding) {
+ assertNotNull(input);
+ assertNotNull(encoding);
+ try {
+ return new StreamProvider(input, encoding.name());
+ } catch (IOException e) {
+ // The only one that is thrown is UnsupportedCharacterEncodingException,
+ // and that's a fundamental problem, so runtime exception.
+ throw new RuntimeException(e);
+ }
+ }
+
+ public static Provider provider(InputStream input) {
+ return provider(input, UTF8);
+ }
+
+ public static Provider provider(File file, Charset encoding) throws FileNotFoundException {
+ return provider(new FileInputStream(assertNotNull(file)), assertNotNull(encoding));
+ }
+
+ public static Provider provider(File file) throws FileNotFoundException {
+ return provider(assertNotNull(file), UTF8);
+ }
+
+ public static Provider provider(Path path, Charset encoding) throws IOException {
+ return provider(Files.newInputStream(assertNotNull(path)), assertNotNull(encoding));
+ }
+
+ public static Provider provider(Path path) throws IOException {
+ return provider(assertNotNull(path), UTF8);
+ }
+
+ public static Provider provider(String source) {
+ return new StringProvider(assertNotNull(source));
+ }
+
+
+ /**
+ * Provide a Provider from the resource found in class loader with the provided encoding.<br/> As resource is
+ * accessed through a class loader, a leading "/" is not allowed in pathToResource
+ */
+ public static Provider resourceProvider(ClassLoader classLoader, String pathToResource, Charset encoding) throws IOException {
+ InputStream resourceAsStream = classLoader.getResourceAsStream(pathToResource);
+ if (resourceAsStream == null) {
+ throw new IOException("Cannot find " + pathToResource);
+ }
+ return provider(resourceAsStream, encoding);
+ }
+
+ /**
+ * Provide a Provider from the resource found in the current class loader with the provided encoding.<br/> As
+ * resource is accessed through a class loader, a leading "/" is not allowed in pathToResource
+ */
+ public static Provider resourceProvider(String pathToResource, Charset encoding) throws IOException {
+ ClassLoader classLoader = Provider.class.getClassLoader();
+ return resourceProvider(classLoader, pathToResource, encoding);
+ }
+
+ /**
+ * Provide a Provider from the resource found in the current class loader with UTF-8 encoding.<br/> As resource is
+ * accessed through a class loader, a leading "/" is not allowed in pathToResource
+ */
+ public static Provider resourceProvider(String pathToResource) throws IOException {
+ return resourceProvider(pathToResource, UTF8);
+ }
+
+}