diff -r 4252bfc396fc -r d382dacfd73f vm/src/main/java/org/apidesign/vm4brwsr/Zips.java --- a/vm/src/main/java/org/apidesign/vm4brwsr/Zips.java Tue Feb 26 14:55:55 2013 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,187 +0,0 @@ -/** - * Back 2 Browser Bytecode Translator - * Copyright (C) 2012 Jaroslav Tulach - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, version 2 of the License. - * - * This program 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 for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. Look for COPYING file in the top folder. - * If not, see http://opensource.org/licenses/GPL-2.0. - */ -package org.apidesign.vm4brwsr; - -import java.io.ByteArrayInputStream; -import java.io.IOException; -import java.io.InputStream; -import java.net.URL; -import org.apidesign.bck2brwsr.core.JavaScriptBody; -import org.apidesign.bck2brwsr.emul.zip.FastJar; - -/** Conversion from classpath to load function. - * - * @author Jaroslav Tulach - */ -final class Zips { - private final FastJar fj; - - private Zips(String path, byte[] zipData) throws IOException { - long bef = timeNow(); - fj = new FastJar(zipData); - for (FastJar.Entry e : fj.list()) { - putRes(e.name, e); - } - log("Iterating thru " + path + " took " + (timeNow() - bef) + "ms"); - } - - public static void init() { - } - @JavaScriptBody(args = { "arr" }, body = "return arr.length;") - private static native int length(Object arr); - @JavaScriptBody(args = { "arr", "index" }, body = "return arr[index];") - private static native Object at(Object arr, int index); - @JavaScriptBody(args = { "arr", "index", "value" }, body = "arr[index] = value; return value;") - private static native Object set(Object arr, int index, Object value); - - public static byte[] loadFromCp(Object classpath, String res) - throws IOException, ClassNotFoundException { - for (int i = 0; i < length(classpath); i++) { - Object c = at(classpath, i); - if (c instanceof String) { - try { - String url = (String)c; - final Zips z = toZip(url); - c = set(classpath, i, z); - final byte[] man = z.findRes("META-INF/MANIFEST.MF"); - if (man != null) { - String mainClass = processClassPathAttr(man, url, classpath); -// if (mainClass != null) { -// Class.forName(mainClass); -// } - } - } catch (IOException ex) { - set(classpath, i, ex); - log("Cannot load " + c + " - " + ex.getClass().getName() + ":" + ex.getMessage()); - } - } - if (res != null) { - byte[] checkRes; - if (c instanceof Zips) { - checkRes = ((Zips)c).findRes(res); - } else { - checkRes = callFunction(c, res); - } - if (checkRes != null) { - return checkRes; - } - } - } - return null; - } - - @JavaScriptBody(args = { "fn", "res" }, body = - "if (typeof fn === 'function') return fn(res);\n" - + "return null;" - ) - private static native byte[] callFunction(Object fn, String res); - - @JavaScriptBody(args = { "msg" }, body = "console.log(msg.toString());") - private static native void log(String msg); - - private byte[] findRes(String res) throws IOException { - Object arr = findResImpl(res); - if (arr instanceof FastJar.Entry) { - long bef = timeNow(); - InputStream zip = fj.getInputStream((FastJar.Entry)arr); - arr = readFully(new byte[512], zip); - putRes(res, arr); - log("Reading " + res + " took " + (timeNow() - bef) + "ms"); - } - return (byte[]) arr; - } - - @JavaScriptBody(args = { "res" }, body = "var r = this[res]; return r ? r : null;") - private native Object findResImpl(String res); - - @JavaScriptBody(args = { "res", "arr" }, body = "this[res] = arr;") - private native void putRes(String res, Object arr); - - private static Zips toZip(String path) throws IOException { - URL u = new URL(path); - byte[] zipData = (byte[]) u.getContent(new Class[] { byte[].class }); - return new Zips(path, zipData); - } - - private static String processClassPathAttr(final byte[] man, String url, Object classpath) throws IOException { - try (ParseMan is = new ParseMan(new ByteArrayInputStream(man))) { - String cp = is.toString(); - if (cp != null) { - cp = cp.trim(); - for (int p = 0; p < cp.length();) { - int n = cp.indexOf(' ', p); - if (n == -1) { - n = cp.length(); - } - String el = cp.substring(p, n); - URL u = new URL(new URL(url), el); - classpath = addToArray(classpath, u.toString()); - p = n + 1; - } - } - return is.getMainClass(); - } - } - - private static Object addToArray(Object arr, String value) { - final int last = length(arr); - Object ret = enlargeArray(arr, last + 1); - set(ret, last, value); - return ret; - } - - @JavaScriptBody(args = { "arr", "len" }, body = "while (arr.length < len) arr.push(null); return arr;") - private static native Object enlargeArray(Object arr, int len); - @JavaScriptBody(args = { "arr", "len" }, body = "while (arr.length < len) arr.push(0);") - private static native void enlargeBytes(byte[] arr, int len); - - @JavaScriptBody(args = { "arr", "len" }, body = "arr.splice(len, arr.length - len);") - private static native void sliceArray(byte[] arr, int len); - - private static Object readFully(byte[] arr, InputStream zip) throws IOException { - int offset = 0; - for (;;) { - int len = zip.read(arr, offset, arr.length - offset); - if (len == -1) { - break; - } - offset += len; - if (offset == arr.length) { - enlargeBytes(arr, arr.length + 4096); - } - } - sliceArray(arr, offset); - return arr; - } - - private static long timeNow() { - double time = m(); - if (time >= 0) { - return (long)time; - } - return org.apidesign.bck2brwsr.emul.lang.System.currentTimeMillis(); - } - @JavaScriptBody(args = {}, body = - "if (typeof window.performance === 'undefined') return -1;\n" - + "if (typeof window.performance.now === 'undefined') return -1;\n" - + "return window.performance.now();" - ) - private static native double m(); - - -}