author | Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
Wed, 25 Jun 2014 23:43:51 +0200 | |
branch | defprop |
changeset 1637 | 4156b1bd4b82 |
parent 772 | d382dacfd73f |
child 1787 | ea12a3bb4b33 |
permissions | -rw-r--r-- |
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/** |
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* Back 2 Browser Bytecode Translator |
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* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org> |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, version 2 of the License. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. Look for COPYING file in the top folder. |
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* If not, see http://opensource.org/licenses/GPL-2.0. |
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*/ |
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package org.apidesign.vm4brwsr; |
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|
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.net.URL; |
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import java.util.Enumeration; |
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|
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/** |
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* |
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* @author Jaroslav Tulach <jtulach@netbeans.org> |
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*/ |
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public final class BytesLoader { |
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private static final StringArray requested = new StringArray(); |
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|
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public byte[] get(String name) throws IOException { |
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if (requested.contains(name)) { |
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throw new IllegalStateException("Requested for second time: " + name); |
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} |
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requested.add(name); |
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byte[] arr = readClass(name); |
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/* |
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System.err.print("loader['" + name + "'] = ["); |
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for (int i = 0; i < arr.length; i++) { |
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if (i > 0) { |
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System.err.print(", "); |
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} |
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System.err.print(arr[i]); |
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} |
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System.err.println("]"); |
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*/ |
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return arr; |
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} |
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|
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static byte[] readClass(String name) throws IOException { |
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URL u = null; |
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Enumeration<URL> en = BytesLoader.class.getClassLoader().getResources(name); |
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while (en.hasMoreElements()) { |
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u = en.nextElement(); |
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} |
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if (u == null) { |
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throw new IOException("Can't find " + name); |
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} |
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try (InputStream is = u.openStream()) { |
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byte[] arr; |
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arr = new byte[is.available()]; |
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int offset = 0; |
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while (offset < arr.length) { |
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int len = is.read(arr, offset, arr.length - offset); |
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if (len == -1) { |
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throw new IOException("Can't read " + name); |
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} |
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offset += len; |
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} |
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return arr; |
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} |
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} |
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|
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} |