8215322: add @file support to jaotc

Reviewed-by: kvn

src/jdk.aot/share/classes/jdk.tools.jaotc/src/jdk/tools/jaotc/Main.java

@@ -29,11 +29,18 @@ import static org.graalvm.compiler.core.common.GraalOptions.GeneratePIC;
 import static org.graalvm.compiler.core.common.GraalOptions.ImmutableCode;
 import static org.graalvm.compiler.hotspot.meta.HotSpotAOTProfilingPlugin.Options.TieredAOT;
 
+import java.io.IOException;
 import java.io.PrintWriter;
 import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.ListIterator;
 import java.util.Set;
+import java.util.StringTokenizer;
+import java.util.stream.Stream;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 
 import org.graalvm.compiler.api.replacements.SnippetReflectionProvider;
 import org.graalvm.compiler.api.runtime.GraalJVMCICompiler;
@@ -78,10 +85,33 @@ public final class Main {
 
     public static void main(String[] args) throws Exception {
         Main t = new Main();
-        final int exitCode = t.run(args);
+        final int exitCode = t.run(parse(args));
         System.exit(exitCode);
     }
 
+    /**
+     * Expands '@file' in command line arguments by replacing '@file' with the content of 'file'
+     * parsed by StringTokenizer. '@' character can be quoted as '@@'.
+     */
+    private static String[] parse(String[] args) throws IOException {
+        List<String> result = new ArrayList<>();
+        for (String arg : args) {
+            if (arg.length() > 1 && arg.charAt(0) == '@') {
+                String v = arg.substring(1);
+                if (v.charAt(0) == '@') {
+                    result.add(v);
+                } else {
+                    try (Stream<String> file = Files.lines(Paths.get(v))) {
+                        file.map(StringTokenizer::new).map(Collections::list).flatMap(l -> l.stream().map(o -> (String) o)).forEachOrdered(result::add);
+                    }
+                }
+            } else {
+                result.add(arg);
+            }
+        }
+        return result.toArray(String[]::new);
+    }
+
     private int run(String[] args) {
         log = new PrintWriter(System.out);
         printer = new LogPrinter(this, log);

test/hotspot/jtreg/compiler/aot/cli/jaotc/AtFileTest.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2018, 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.
+ *
+ * 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.
+ */
+
+/*
+ * @test
+ * @summary check at-file jaotc support
+ * @comment based on CompileClassTest with arguments wrote in 'jaotc.cmd' file
+ * @requires vm.aot
+ * @bug 8215322
+ * @library / /test/lib /testlibrary
+ * @modules java.base/jdk.internal.misc
+ * @build compiler.aot.cli.jaotc.AtFileTest
+ * @run driver ClassFileInstaller compiler.aot.cli.jaotc.data.HelloWorldOne
+ * @run driver compiler.aot.cli.jaotc.AtFileTest
+ */
+
+package compiler.aot.cli.jaotc;
+
+import compiler.aot.cli.jaotc.data.HelloWorldOne;
+import java.io.File;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.Files;
+import java.util.List;
+import jdk.test.lib.Asserts;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class AtFileTest {
+    public static void main(String[] args) throws Exception {
+        Path file = Paths.get("jatoc.cmd");
+        Files.write(file, List.of("--class-name",
+                JaotcTestHelper.getClassAotCompilationName(HelloWorldOne.class)));
+        OutputAnalyzer oa = JaotcTestHelper.compileLibrary("@" + file.toString());
+        oa.shouldHaveExitValue(0);
+        File compiledLibrary = new File(JaotcTestHelper.DEFAULT_LIB_PATH);
+        Asserts.assertTrue(compiledLibrary.exists(), "Compiled library file missing");
+        Asserts.assertGT(compiledLibrary.length(), 0L, "Unexpected compiled library size");
+        JaotcTestHelper.checkLibraryUsage(HelloWorldOne.class.getName());
+    }
+}