From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/nio/ByteBufferHelper.java | 343 +++++++++++++++++++++++ 1 file changed, 343 insertions(+) create mode 100644 libjava/classpath/java/nio/ByteBufferHelper.java (limited to 'libjava/classpath/java/nio/ByteBufferHelper.java') diff --git a/libjava/classpath/java/nio/ByteBufferHelper.java b/libjava/classpath/java/nio/ByteBufferHelper.java new file mode 100644 index 000000000..aee007b50 --- /dev/null +++ b/libjava/classpath/java/nio/ByteBufferHelper.java @@ -0,0 +1,343 @@ +/* ByteBufferImpl.java -- + Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath 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; either version 2, or (at your option) +any later version. + +GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.nio; + +/** + * @author Michael Koch (konqueror@gmx.de) + */ +final class ByteBufferHelper +{ + public static char getChar (ByteBuffer buffer, ByteOrder order) + { + return (char) getShort (buffer, order); + } + + public static void putChar (ByteBuffer buffer, char value, ByteOrder order) + { + putShort (buffer, (short) value, order); + } + + public static char getChar (ByteBuffer buffer, int index, ByteOrder order) + { + return (char) getShort (buffer, index, order); + } + + public static void putChar (ByteBuffer buffer, int index, + char value, ByteOrder order) + { + putShort (buffer, index, (short) value, order); + } + + public static short getShort (ByteBuffer buffer, ByteOrder order) + { + buffer.checkForUnderflow(2); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + return (short) ((buffer.get() & 0xff) + + (buffer.get() << 8)); + } + + return (short) ((buffer.get() << 8) + + (buffer.get() & 0xff)); + } + + public static void putShort (ByteBuffer buffer, short value, ByteOrder order) + { + buffer.checkForOverflow(2); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put ((byte) value); + buffer.put ((byte) (value >> 8)); + } + else + { + buffer.put ((byte) (value >> 8)); + buffer.put ((byte) value); + } + } + + public static short getShort (ByteBuffer buffer, + int index, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + return (short) ((buffer.get (index) & 0xff) + + (buffer.get (++index) << 8)); + } + + return (short) ((buffer.get (index) << 8) + + (buffer.get (++index) & 0xff)); + } + + public static void putShort (ByteBuffer buffer, int index, + short value, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put (index, (byte) value); + buffer.put (++index, (byte) (value >> 8)); + } + else + { + buffer.put (index, (byte) (value >> 8)); + buffer.put (++index, (byte) value); + } + } + + public static int getInt (ByteBuffer buffer, ByteOrder order) + { + buffer.checkForUnderflow(4); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + return ((buffer.get() & 0xff) + + ((buffer.get() & 0xff) << 8) + + ((buffer.get() & 0xff) << 16) + + (buffer.get() << 24)); + } + + return (int) ((buffer.get() << 24) + + ((buffer.get() & 0xff) << 16) + + ((buffer.get() & 0xff) << 8) + + (buffer.get() & 0xff)); + } + + public static void putInt (ByteBuffer buffer, int value, ByteOrder order) + { + buffer.checkForOverflow(4); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put ((byte) value); + buffer.put ((byte) (value >> 8)); + buffer.put ((byte) (value >> 16)); + buffer.put ((byte) (value >> 24)); + } + else + { + buffer.put ((byte) (value >> 24)); + buffer.put ((byte) (value >> 16)); + buffer.put ((byte) (value >> 8)); + buffer.put ((byte) value); + } + } + + public static int getInt (ByteBuffer buffer, int index, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + return ((buffer.get (index) & 0xff) + + ((buffer.get (++index) & 0xff) << 8) + + ((buffer.get (++index) & 0xff) << 16) + + (buffer.get (++index) << 24)); + } + + return ((buffer.get (index) << 24) + + ((buffer.get (++index) & 0xff) << 16) + + ((buffer.get (++index) & 0xff) << 8) + + (buffer.get (++index) & 0xff)); + } + + public static void putInt (ByteBuffer buffer, int index, + int value, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put (index, (byte) value); + buffer.put (++index, (byte) (value >> 8)); + buffer.put (++index, (byte) (value >> 16)); + buffer.put (++index, (byte) (value >> 24)); + } + else + { + buffer.put (index, (byte) (value >> 24)); + buffer.put (++index, (byte) (value >> 16)); + buffer.put (++index, (byte) (value >> 8)); + buffer.put (++index, (byte) value); + } + } + + public static long getLong (ByteBuffer buffer, ByteOrder order) + { + buffer.checkForUnderflow(8); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + return ((buffer.get() & 0xff) + + (((buffer.get() & 0xff)) << 8) + + (((buffer.get() & 0xff)) << 16) + + (((buffer.get() & 0xffL)) << 24) + + (((buffer.get() & 0xffL)) << 32) + + (((buffer.get() & 0xffL)) << 40) + + (((buffer.get() & 0xffL)) << 48) + + (((long) buffer.get()) << 56)); + } + + return ((((long) buffer.get()) << 56) + + ((buffer.get() & 0xffL) << 48) + + ((buffer.get() & 0xffL) << 40) + + ((buffer.get() & 0xffL) << 32) + + ((buffer.get() & 0xffL) << 24) + + ((buffer.get() & 0xff) << 16) + + ((buffer.get() & 0xff) << 8) + + (buffer.get() & 0xff)); + } + + public static void putLong (ByteBuffer buffer, long value, ByteOrder order) + { + buffer.checkForOverflow(8); + + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put ((byte) value); + buffer.put ((byte) (value >> 8)); + buffer.put ((byte) (value >> 16)); + buffer.put ((byte) (value >> 24)); + buffer.put ((byte) (value >> 32)); + buffer.put ((byte) (value >> 40)); + buffer.put ((byte) (value >> 48)); + buffer.put ((byte) (value >> 56)); + } + else + { + buffer.put ((byte) (value >> 56)); + buffer.put ((byte) (value >> 48)); + buffer.put ((byte) (value >> 40)); + buffer.put ((byte) (value >> 32)); + buffer.put ((byte) (value >> 24)); + buffer.put ((byte) (value >> 16)); + buffer.put ((byte) (value >> 8)); + buffer.put ((byte) value); + } + } + + public static long getLong (ByteBuffer buffer, int index, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + return ((buffer.get (index) & 0xff) + + ((buffer.get (++index) & 0xff) << 8) + + ((buffer.get (++index) & 0xff) << 16) + + ((buffer.get (++index) & 0xffL) << 24) + + ((buffer.get (++index) & 0xffL) << 32) + + ((buffer.get (++index) & 0xffL) << 40) + + ((buffer.get (++index) & 0xffL) << 48) + + (((long) buffer.get (++index)) << 56)); + } + + return ((((long) buffer.get (index)) << 56) + + ((buffer.get (++index) & 0xffL) << 48) + + ((buffer.get (++index) & 0xffL) << 40) + + ((buffer.get (++index) & 0xffL) << 32) + + ((buffer.get (++index) & 0xffL) << 24) + + ((buffer.get (++index) & 0xff) << 16) + + ((buffer.get (++index) & 0xff) << 8) + + (buffer.get (++index) & 0xff)); + } + + public static void putLong (ByteBuffer buffer, int index, + long value, ByteOrder order) + { + if (order == ByteOrder.LITTLE_ENDIAN) + { + buffer.put (index, (byte) value); + buffer.put (++index, (byte) (value >> 8)); + buffer.put (++index, (byte) (value >> 16)); + buffer.put (++index, (byte) (value >> 24)); + buffer.put (++index, (byte) (value >> 32)); + buffer.put (++index, (byte) (value >> 40)); + buffer.put (++index, (byte) (value >> 48)); + buffer.put (++index, (byte) (value >> 56)); + } + else + { + buffer.put (index, (byte) (value >> 56)); + buffer.put (++index, (byte) (value >> 48)); + buffer.put (++index, (byte) (value >> 40)); + buffer.put (++index, (byte) (value >> 32)); + buffer.put (++index, (byte) (value >> 24)); + buffer.put (++index, (byte) (value >> 16)); + buffer.put (++index, (byte) (value >> 8)); + buffer.put (++index, (byte) value); + } + } + + public static float getFloat (ByteBuffer buffer, ByteOrder order) + { + return Float.intBitsToFloat (getInt (buffer, order)); + } + + public static void putFloat (ByteBuffer buffer, float value, ByteOrder order) + { + putInt (buffer, Float.floatToRawIntBits (value), order); + } + + public static float getFloat (ByteBuffer buffer, int index, ByteOrder order) + { + return Float.intBitsToFloat (getInt (buffer, index, order)); + } + + public static void putFloat (ByteBuffer buffer, int index, + float value, ByteOrder order) + { + putInt (buffer, index, Float.floatToRawIntBits (value), order); + } + + public static double getDouble (ByteBuffer buffer, ByteOrder order) + { + return Double.longBitsToDouble (getLong (buffer, order)); + } + + public static void putDouble (ByteBuffer buffer, double value, ByteOrder order) + { + putLong (buffer, Double.doubleToRawLongBits (value), order); + } + + public static double getDouble (ByteBuffer buffer, int index, ByteOrder order) + { + return Double.longBitsToDouble (getLong (buffer, index, order)); + } + + public static void putDouble (ByteBuffer buffer, int index, + double value, ByteOrder order) + { + putLong (buffer, index, Double.doubleToRawLongBits (value), order); + } +} // ByteBufferHelper -- cgit v1.2.3