| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.internal.jshell.tool; |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PrintStream; |
| import java.util.Collections; |
| import java.util.EnumSet; |
| import java.util.Set; |
| import javax.lang.model.SourceVersion; |
| import javax.tools.Tool; |
| import jdk.jshell.tool.JavaShellToolBuilder; |
| |
| /** |
| * Provider for launching the jshell tool. |
| */ |
| public class JShellToolProvider implements Tool { |
| |
| /** |
| * Returns the name of this Java shell tool provider. |
| * |
| * @return the name of this tool provider |
| */ |
| @Override |
| public String name() { |
| return "jshell"; |
| } |
| |
| /** |
| * Run the jshell tool. The streams {@code out} and {@code err} are |
| * converted to {@code PrintStream} if they are not already. |
| * Any {@code Exception} is caught, printed and results in a non-zero return. |
| * |
| * @param in command line input (snippets and commands), and execution |
| * "standard" input; use System.in if null |
| * @param out command line output, feedback including errors, and execution |
| * "standard" output; use System.out if null |
| * @param err start-up errors and execution "standard" error; use System.err |
| * if null |
| * @param arguments arguments to pass to the tool |
| * @return the exit status with which the tool explicitly exited (if any), |
| * otherwise 0 for success or 1 for failure |
| * @throws NullPointerException if the array of arguments contains |
| * any {@code null} elements. |
| */ |
| @Override |
| public int run(InputStream in, OutputStream out, OutputStream err, String... arguments) { |
| InputStream xin = |
| (in == null) |
| ? System.in |
| : in; |
| PrintStream xout = |
| (out == null) |
| ? System.out |
| : (out instanceof PrintStream) |
| ? (PrintStream) out |
| : new PrintStream(out); |
| PrintStream xerr = |
| (err == null) |
| ? System.err |
| : (err instanceof PrintStream) |
| ? (PrintStream) err |
| : new PrintStream(err); |
| try { |
| return JavaShellToolBuilder |
| .builder() |
| .in(xin, null) |
| .out(xout) |
| .err(xerr) |
| .start(arguments); |
| } catch (Throwable ex) { |
| xerr.println(ex.getMessage()); |
| return 1; |
| } |
| } |
| |
| /** |
| * Returns the source versions of the jshell tool. |
| * @return a set of supported source versions |
| */ |
| @Override |
| public Set<SourceVersion> getSourceVersions() { |
| return Collections.unmodifiableSet( |
| EnumSet.range(SourceVersion.RELEASE_9, SourceVersion.latest())); |
| } |
| |
| /** |
| * Launch the tool and exit. |
| * @param arguments the command-line arguments (including options), if any |
| * @throws Exception an unexpected fatal exception |
| */ |
| public static void main(String[] arguments) throws Exception { |
| System.exit( |
| JavaShellToolBuilder |
| .builder() |
| .start(arguments)); |
| } |
| } |