зеркало из https://github.com/mozilla/pluotsorbet.git
Merge pull request #623 from marco-c/DataOutputStream_writeUTF
Implement the expensive part of DataOutputStream::writeUTF in JS
This commit is contained in:
Myk Melez
Коммит
08b9c8e82c
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@ -0,0 +1,283 @@
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/*
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*
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*
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* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 only, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License version 2 for more details (a copy is
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* included at /legal/license.txt).
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this work; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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* Clara, CA 95054 or visit www.sun.com if you need additional
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* information or have any questions.
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*/
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package java.io;
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/**
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* A data output stream lets an application write primitive Java data
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* types to an output stream in a portable way. An application can
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* then use a data input stream to read the data back in.
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*
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* @version 12/17/01 (CLDC 1.1)
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* @see java.io.DataInputStream
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* @since JDK1.0, CLDC 1.0
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*/
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public
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class DataOutputStream extends OutputStream implements DataOutput {
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/**
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* The output stream.
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*/
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protected OutputStream out;
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/**
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* Creates a new data output stream to write data to the specified
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* underlying output stream.
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*
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* @param out the underlying output stream, to be saved for later
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* use.
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*/
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public DataOutputStream(OutputStream out) {
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this.out = out;
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}
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/**
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* Writes the specified byte (the low eight bits of the argument
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* <code>b</code>) to the underlying output stream.
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* <p>
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* Implements the <code>write</code> method of <code>OutputStream</code>.
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*
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* @param b the <code>byte</code> to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public void write(int b) throws IOException {
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out.write(b);
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}
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/**
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* Writes <code>len</code> bytes from the specified byte array
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* starting at offset <code>off</code> to the underlying output stream.
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*
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* @param b the data.
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* @param off the start offset in the data.
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* @param len the number of bytes to write.
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* @exception IOException if an I/O error occurs.
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*/
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public void write(byte b[], int off, int len) throws IOException {
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out.write(b, off, len);
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}
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/**
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* Flushes this data output stream. This forces any buffered output
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* bytes to be written out to the stream.
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* <p>
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* The <code>flush</code> method of <code>DataOutputStream</code>
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* calls the <code>flush</code> method of its underlying output stream.
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*
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* @exception IOException if an I/O error occurs.
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*/
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public void flush() throws IOException {
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out.flush();
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}
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/**
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* Closes this output stream and releases any system resources
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* associated with the stream.
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* <p>
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* The <code>close</code> method
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* calls its <code>flush</code> method, and then calls the
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* <code>close</code> method of its underlying output stream.
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*
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* @exception IOException if an I/O error occurs.
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*/
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public void close() throws IOException {
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try {
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flush();
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} catch (IOException e) {
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}
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out.close();
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}
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/**
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* Writes a <code>boolean</code> to the underlying output stream as
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* a 1-byte value. The value <code>true</code> is written out as the
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* value <code>(byte)1</code>; the value <code>false</code> is
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* written out as the value <code>(byte)0</code>.
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*
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* @param v a <code>boolean</code> value to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeBoolean(boolean v) throws IOException {
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write(v ? 1 : 0);
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}
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/**
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* Writes out a <code>byte</code> to the underlying output stream as
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* a 1-byte value.
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*
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* @param v a <code>byte</code> value to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeByte(int v) throws IOException {
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write(v);
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}
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/**
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* Writes a <code>short</code> to the underlying output stream as two
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* bytes, high byte first.
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*
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* @param v a <code>short</code> to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeShort(int v) throws IOException {
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write((v >>> 8) & 0xFF);
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write((v >>> 0) & 0xFF);
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}
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/**
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* Writes a <code>char</code> to the underlying output stream as a
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* 2-byte value, high byte first.
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*
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* @param v a <code>char</code> value to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeChar(int v) throws IOException {
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write((v >>> 8) & 0xFF);
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write((v >>> 0) & 0xFF);
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}
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/**
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* Writes an <code>int</code> to the underlying output stream as four
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* bytes, high byte first.
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*
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* @param v an <code>int</code> to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeInt(int v) throws IOException {
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write((v >>> 24) & 0xFF);
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write((v >>> 16) & 0xFF);
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write((v >>> 8) & 0xFF);
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write((v >>> 0) & 0xFF);
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}
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/**
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* Writes a <code>long</code> to the underlying output stream as eight
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* bytes, high byte first.
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*
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* @param v a <code>long</code> to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeLong(long v) throws IOException {
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write((int)(v >>> 56) & 0xFF);
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write((int)(v >>> 48) & 0xFF);
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write((int)(v >>> 40) & 0xFF);
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write((int)(v >>> 32) & 0xFF);
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write((int)(v >>> 24) & 0xFF);
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write((int)(v >>> 16) & 0xFF);
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write((int)(v >>> 8) & 0xFF);
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write((int)(v >>> 0) & 0xFF);
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}
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/**
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* Converts the float argument to an <code>int</code> using the
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* <code>floatToIntBits</code> method in class <code>Float</code>,
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* and then writes that <code>int</code> value to the underlying
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* output stream as a 4-byte quantity, high byte first.
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*
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* @param v a <code>float</code> value to be written.
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* @exception IOException if an I/O error occurs.
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* @see java.lang.Float#floatToIntBits(float)
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* @since CLDC 1.1
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*/
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public final void writeFloat(float v) throws IOException {
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writeInt(Float.floatToIntBits(v));
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}
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/**
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* Converts the double argument to a <code>long</code> using the
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* <code>doubleToLongBits</code> method in class <code>Double</code>,
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* and then writes that <code>long</code> value to the underlying
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* output stream as an 8-byte quantity, high byte first.
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*
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* @param v a <code>double</code> value to be written.
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* @exception IOException if an I/O error occurs.
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* @see java.lang.Double#doubleToLongBits(double)
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* @since CLDC 1.1
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*/
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public final void writeDouble(double v) throws IOException {
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writeLong(Double.doubleToLongBits(v));
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}
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/**
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* Writes a string to the underlying output stream as a sequence of
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* characters. Each character is written to the data output stream as
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* if by the <code>writeChar</code> method.
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*
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* @param s a <code>String</code> value to be written.
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* @exception IOException if an I/O error occurs.
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* @see java.io.DataOutputStream#writeChar(int)
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*/
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public final void writeChars(String s) throws IOException {
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int len = s.length();
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for (int i = 0 ; i < len ; i++) {
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int v = s.charAt(i);
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write((v >>> 8) & 0xFF);
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write((v >>> 0) & 0xFF);
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}
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}
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/**
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* Writes a string to the underlying output stream using UTF-8
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* encoding in a machine-independent manner.
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* <p>
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* First, two bytes are written to the output stream as if by the
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* <code>writeShort</code> method giving the number of bytes to
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* follow. This value is the number of bytes actually written out,
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* not the length of the string. Following the length, each character
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* of the string is output, in sequence, using the UTF-8 encoding
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* for the character.
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*
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* @param str a string to be written.
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* @exception IOException if an I/O error occurs.
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*/
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public final void writeUTF(String str) throws IOException {
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writeUTF(str, this);
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}
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/**
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* Writes a string to the specified DataOutput using UTF-8 encoding in a
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* machine-independent manner.
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* <p>
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* First, two bytes are written to out as if by the <code>writeShort</code>
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* method giving the number of bytes to follow. This value is the number of
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* bytes actually written out, not the length of the string. Following the
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* length, each character of the string is output, in sequence, using the
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* UTF-8 encoding for the character.
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*
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* @param str a string to be written.
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* @param out destination to write to
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* @return The number of bytes written out.
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* @exception IOException if an I/O error occurs.
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*/
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static final int writeUTF(String str, DataOutput out) throws IOException {
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byte[] bytearr = UTFToBytes(str);
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out.write(bytearr);
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return bytearr.length;
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}
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static native byte[] UTFToBytes(String str);
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}
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41
native.js
41
native.js
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@ -725,6 +725,47 @@ Native.create("java/io/DataInputStream.bytesToUTF.([B)Ljava/lang/String;", funct
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}
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});
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Native.create("java/io/DataOutputStream.UTFToBytes.(Ljava/lang/String;)[B", function(jStr) {
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var str = util.fromJavaString(jStr);
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var utflen = 0;
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for (var i = 0; i < str.length; i++) {
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var c = str.charCodeAt(i);
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if ((c >= 0x0001) && (c <= 0x007F)) {
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utflen++;
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} else if (c > 0x07FF) {
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utflen += 3;
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} else {
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utflen += 2;
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}
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}
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if (utflen > 65535) {
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throw new JavaException("java/io/UTFDataFormatException");
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}
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var count = 0;
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var bytearr = util.newPrimitiveArray("B", utflen + 2);
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bytearr[count++] = (utflen >>> 8) & 0xFF;
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bytearr[count++] = (utflen >>> 0) & 0xFF;
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for (var i = 0; i < str.length; i++) {
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var c = str.charCodeAt(i);
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if ((c >= 0x0001) && (c <= 0x007F)) {
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bytearr[count++] = c;
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} else if (c > 0x07FF) {
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bytearr[count++] = 0xE0 | ((c >> 12) & 0x0F);
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bytearr[count++] = 0x80 | ((c >> 6) & 0x3F);
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bytearr[count++] = 0x80 | ((c >> 0) & 0x3F);
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} else {
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bytearr[count++] = 0xC0 | ((c >> 6) & 0x1F);
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bytearr[count++] = 0x80 | ((c >> 0) & 0x3F);
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}
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}
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return bytearr;
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});
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Native.create("com/sun/cldc/i18n/j2me/UTF_8_Writer.encodeUTF8.([CII)[B", function(cbuf, off, len) {
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var outputArray = [];
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