Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/bugspot/PackageScanner.java @ 6002:df4cd4aac5c1
7160924: jvmti: GetPhase returns incorrect phase before VMInit event is issued
Reviewed-by: acorn, dcubed
author | rbackman |
---|---|
date | Thu, 12 Apr 2012 13:24:08 +0200 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2002, 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. * */ package sun.jvm.hotspot.bugspot; import java.io.*; /** Scans a .java file for the package that it is in. */ public class PackageScanner { public PackageScanner() { } public String scan(String filename) { return scan(new File(filename)); } /** Returns the String comprising the package name of the classes in this .java file. Returns the (non-null) empty string if any error occurs or if the classes are in the unnamed package. */ public String scan(File file) { BufferedReader buf = null; String res = ""; try { buf = new BufferedReader(new FileReader(file)); StreamTokenizer tok = new StreamTokenizer(buf); tok.slashStarComments(true); tok.slashSlashComments(true); if (tok.nextToken() != StreamTokenizer.TT_WORD) { return res; } if (!tok.sval.equals("package")) { return res; } if (tok.nextToken() != StreamTokenizer.TT_WORD) { return res; } res = tok.sval; return res; } catch (FileNotFoundException e) { return res; } catch (IOException e) { return res; } finally { try { if (buf != null) { buf.close(); } } catch (IOException e) { } } } public static void main(String[] args) { if (args.length != 1) { usage(); } System.out.println(new PackageScanner().scan(args[0])); } private static void usage() { System.err.println("Usage: java PackageScanner <.java file name>"); System.err.println("Prints package the .java file is in to stdout."); System.exit(1); } }