ByteBufferHelper.java: Rewrote all methods by suggestions from Eric Blake.
2003-10-02 Michael Koch <konqueror@gmx.de> * java/nio/ByteBufferHelper.java: Rewrote all methods by suggestions from Eric Blake. From-SVN: r72030
This commit is contained in:
Michael Koch
Michael Koch
parent
eae216e8c3
commit
a08a2b7514
2 changed files with 117 additions and 156 deletions
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@ -70,67 +70,23 @@ final class ByteBufferHelper
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public static final char getChar (ByteBuffer buffer)
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{
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checkRemainingForRead (buffer, 2);
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (char) ((buffer.get() & 0xff)
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+ ((buffer.get() & 0xff) << 8));
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}
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return (char) (((buffer.get() & 0xff) << 8)
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+ (buffer.get() & 0xff));
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return (char) getShort (buffer);
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}
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public static final ByteBuffer putChar (ByteBuffer buffer, char value)
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{
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checkRemainingForWrite (buffer, 2);
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put ((byte) (value & 0x00ff));
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buffer.put ((byte) ((value & 0xff00) >> 8));
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}
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else
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{
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buffer.put ((byte) ((value & 0xff00) >> 8));
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buffer.put ((byte) (value & 0x00ff));
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}
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return buffer;
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return putShort (buffer, (short) value);
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}
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public static final char getChar (ByteBuffer buffer, int index)
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{
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checkAvailableForRead (buffer, index, 2);
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (char) ((buffer.get (index) & 0xff)
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+ ((buffer.get (index + 1) & 0xff) << 8));
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}
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return (char) (((buffer.get (index) & 0xff) << 8)
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+ (buffer.get (index + 1) & 0xff));
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return (char) getShort (buffer, index);
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}
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public static final ByteBuffer putChar (ByteBuffer buffer, int index,
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char value)
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{
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checkAvailableForWrite (buffer, index, 2);
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put (index, (byte) (value & 0xff00));
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buffer.put (index + 1, (byte) ((value & 0x00ff) >> 8));
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}
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else
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{
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buffer.put (index, (byte) ((value & 0xff00) >> 8));
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buffer.put (index + 1, (byte) (value & 0x00ff));
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}
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return buffer;
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return putShort (buffer, index, (short) value);
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}
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public static final short getShort (ByteBuffer buffer)
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@ -140,10 +96,10 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (short) ((buffer.get() & 0xff)
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+ ((buffer.get() & 0xff) << 8));
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+ (buffer.get() << 8));
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}
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return (short) (((buffer.get() & 0xff) << 8)
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return (short) ((buffer.get() << 8)
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+ (buffer.get() & 0xff));
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}
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@ -153,13 +109,13 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put ((byte) (value & 0x00ff));
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buffer.put ((byte) ((value & 0xff00) >> 8));
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buffer.put ((byte) value);
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buffer.put ((byte) (value >> 8));
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}
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else
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{
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buffer.put ((byte) ((value & 0xff00) >> 8));
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buffer.put ((byte) (value & 0x00ff));
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buffer.put ((byte) (value >> 8));
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buffer.put ((byte) value);
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}
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return buffer;
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@ -172,11 +128,11 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (short) ((buffer.get (index) & 0xff)
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+ ((buffer.get (index + 1) & 0xff) << 8));
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+ (buffer.get (++index) << 8));
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}
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return (short) (((buffer.get (index) & 0xff) << 8)
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+ (buffer.get (index + 1) & 0xff));
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return (short) ((buffer.get (index) << 8)
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+ (buffer.get (++index) & 0xff));
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}
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public static final ByteBuffer putShort (ByteBuffer buffer, int index,
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@ -186,13 +142,13 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put (index, (byte) (value & 0x00ff));
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buffer.put (index + 1, (byte) ((value & 0xff00) >> 8));
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buffer.put (index, (byte) value);
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buffer.put (++index, (byte) (value >> 8));
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}
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else
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{
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buffer.put (index, (byte) ((value & 0xff00) >> 8));
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buffer.put (index + 1, (byte) (value & 0x00ff));
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buffer.put (index, (byte) (value >> 8));
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buffer.put (++index, (byte) value);
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}
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return buffer;
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@ -204,13 +160,13 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (int) ((buffer.get() & 0xff)
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+ ((buffer.get() & 0xff) << 8)
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+ ((buffer.get() & 0xff) << 16)
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+ ((buffer.get() & 0xff) << 24));
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return ((buffer.get() & 0xff)
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+ ((buffer.get() & 0xff) << 8)
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+ ((buffer.get() & 0xff) << 16)
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+ (buffer.get() << 24));
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}
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return (int) (((buffer.get() & 0xff) << 24)
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return (int) ((buffer.get() << 24)
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+ ((buffer.get() & 0xff) << 16)
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+ ((buffer.get() & 0xff) << 8)
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+ (buffer.get() & 0xff));
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@ -222,17 +178,17 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put ((byte) (value & 0x000000ff));
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buffer.put ((byte) ((value & 0x0000ff00) >> 8));
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buffer.put ((byte) ((value & 0x00ff0000) >> 16));
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buffer.put ((byte) ((value & 0xff000000) >> 24));
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buffer.put ((byte) value);
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buffer.put ((byte) (value >> 8));
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buffer.put ((byte) (value >> 16));
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buffer.put ((byte) (value >> 24));
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}
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else
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{
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buffer.put ((byte) ((value & 0xff000000) >> 24));
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buffer.put ((byte) ((value & 0x00ff0000) >> 16));
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buffer.put ((byte) ((value & 0x0000ff00) >> 8));
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buffer.put ((byte) (value & 0x000000ff));
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buffer.put ((byte) (value >> 24));
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buffer.put ((byte) (value >> 16));
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buffer.put ((byte) (value >> 8));
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buffer.put ((byte) value);
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}
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return buffer;
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@ -244,16 +200,16 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (int) ((buffer.get (index) & 0xff))
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+ ((buffer.get (index + 1) & 0xff) << 8)
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+ ((buffer.get (index + 2) & 0xff) << 16)
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+ ((buffer.get (index + 3) & 0xff) << 24);
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return ((buffer.get (index) & 0xff)
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+ ((buffer.get (++index) & 0xff) << 8)
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+ ((buffer.get (++index) & 0xff) << 16)
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+ (buffer.get (++index) << 24));
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}
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return (int) (((buffer.get (index) & 0xff) << 24)
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+ ((buffer.get (index + 1) & 0xff) << 16)
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+ ((buffer.get (index + 2) & 0xff) << 8)
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+ (buffer.get (index + 3) & 0xff));
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return ((buffer.get (index) << 24)
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+ ((buffer.get (++index) & 0xff) << 16)
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+ ((buffer.get (++index) & 0xff) << 8)
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+ (buffer.get (++index) & 0xff));
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}
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public static final ByteBuffer putInt (ByteBuffer buffer, int index,
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@ -263,17 +219,17 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put (index, (byte) (value & 0x000000ff));
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buffer.put (index + 1, (byte) ((value & 0x0000ff00) >> 8));
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buffer.put (index + 2, (byte) ((value & 0x00ff0000) >> 16));
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buffer.put (index + 3, (byte) ((value & 0xff000000) >> 24));
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buffer.put (index, (byte) value);
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buffer.put (++index, (byte) (value >> 8));
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buffer.put (++index, (byte) (value >> 16));
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buffer.put (++index, (byte) (value >> 24));
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}
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else
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{
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buffer.put (index, (byte) ((value & 0xff000000) >> 24));
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buffer.put (index + 1, (byte) ((value & 0x00ff0000) >> 16));
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buffer.put (index + 2, (byte) ((value & 0x0000ff00) >> 8));
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buffer.put (index + 3, (byte) (value & 0x000000ff));
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buffer.put (index, (byte) (value >> 24));
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buffer.put (++index, (byte) (value >> 16));
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buffer.put (++index, (byte) (value >> 8));
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buffer.put (++index, (byte) value);
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}
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return buffer;
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@ -285,24 +241,24 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (long) (((buffer.get() & 0xff))
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+ ((buffer.get() & 0xff) << 8)
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+ ((buffer.get() & 0xff) << 16)
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+ ((buffer.get() & 0xff) << 24)
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+ ((buffer.get() & 0xffL) << 32)
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+ ((buffer.get() & 0xffL) << 40)
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+ ((buffer.get() & 0xffL) << 48)
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+ ((buffer.get() & 0xffL) << 56));
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return ((buffer.get() & 0xff)
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+ (((buffer.get() & 0xff)) << 8)
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+ (((buffer.get() & 0xff)) << 16)
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+ (((buffer.get() & 0xffL)) << 24)
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+ (((buffer.get() & 0xffL)) << 32)
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+ (((buffer.get() & 0xffL)) << 40)
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+ (((buffer.get() & 0xffL)) << 48)
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+ (((long) buffer.get()) << 56));
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}
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return (long) (((buffer.get() & 0xffL) << 56)
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+ ((buffer.get() & 0xffL) << 48)
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+ ((buffer.get() & 0xffL) << 40)
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+ ((buffer.get() & 0xffL) << 32)
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+ ((buffer.get() & 0xff) << 24)
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+ ((buffer.get() & 0xff) << 16)
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+ ((buffer.get() & 0xff) << 8)
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+ (buffer.get() & 0xff));
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return ((((long) buffer.get()) << 56)
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+ ((buffer.get() & 0xffL) << 48)
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+ ((buffer.get() & 0xffL) << 40)
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+ ((buffer.get() & 0xffL) << 32)
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+ ((buffer.get() & 0xffL) << 24)
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+ ((buffer.get() & 0xff) << 16)
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+ ((buffer.get() & 0xff) << 8)
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+ (buffer.get() & 0xff));
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}
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public static final ByteBuffer putLong (ByteBuffer buffer, long value)
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@ -311,25 +267,25 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put ((byte) (((int) value) & 0xff));
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buffer.put ((byte) (((int) (value >> 8)) & 0xff));
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buffer.put ((byte) (((int) (value >> 16)) & 0xff));
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buffer.put ((byte) (((int) (value >> 24)) & 0xff));
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buffer.put ((byte) (((int) (value >> 32)) & 0xff));
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buffer.put ((byte) (((int) (value >> 40)) & 0xff));
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buffer.put ((byte) (((int) (value >> 48)) & 0xff));
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buffer.put ((byte) (((int) (value >> 56)) & 0xff));
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buffer.put ((byte) value);
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buffer.put ((byte) (value >> 8));
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buffer.put ((byte) (value >> 16));
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buffer.put ((byte) (value >> 24));
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buffer.put ((byte) (value >> 32));
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buffer.put ((byte) (value >> 40));
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buffer.put ((byte) (value >> 48));
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buffer.put ((byte) (value >> 56));
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}
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else
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{
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buffer.put ((byte) (((int) (value >> 56)) & 0xff));
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buffer.put ((byte) (((int) (value >> 48)) & 0xff));
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buffer.put ((byte) (((int) (value >> 40)) & 0xff));
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buffer.put ((byte) (((int) (value >> 32)) & 0xff));
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buffer.put ((byte) (((int) (value >> 24)) & 0xff));
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buffer.put ((byte) (((int) (value >> 16)) & 0xff));
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buffer.put ((byte) (((int) (value >> 8)) & 0xff));
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buffer.put ((byte) (((int) value) & 0xff));
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buffer.put ((byte) (value >> 56));
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buffer.put ((byte) (value >> 48));
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buffer.put ((byte) (value >> 40));
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buffer.put ((byte) (value >> 32));
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buffer.put ((byte) (value >> 24));
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buffer.put ((byte) (value >> 16));
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buffer.put ((byte) (value >> 8));
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buffer.put ((byte) value);
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}
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return buffer;
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@ -341,24 +297,24 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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return (long) ((buffer.get (index) & 0xff)
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+ ((buffer.get (index + 1) & 0xff) << 8)
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+ ((buffer.get (index + 2) & 0xff) << 16)
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+ ((buffer.get (index + 3) & 0xff) << 24)
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+ ((buffer.get (index + 4) & 0xffL) << 32)
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+ ((buffer.get (index + 5) & 0xffL) << 40)
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+ ((buffer.get (index + 6) & 0xffL) << 48)
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+ ((buffer.get (index + 7) & 0xffL) << 56));
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return ((buffer.get (index) & 0xff)
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+ ((buffer.get (++index) & 0xff) << 8)
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+ ((buffer.get (++index) & 0xff) << 16)
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+ ((buffer.get (++index) & 0xffL) << 24)
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+ ((buffer.get (++index) & 0xffL) << 32)
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+ ((buffer.get (++index) & 0xffL) << 40)
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+ ((buffer.get (++index) & 0xffL) << 48)
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+ (((long) buffer.get (++index)) << 56));
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}
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return (long) (((buffer.get (index) & 0xffL) << 56)
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+ ((buffer.get (index + 1) & 0xffL) << 48)
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+ ((buffer.get (index + 2) & 0xffL) << 40)
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+ ((buffer.get (index + 3) & 0xffL) << 32)
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+ ((buffer.get (index + 4) & 0xff) << 24)
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+ ((buffer.get (index + 5) & 0xff) << 16)
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+ ((buffer.get (index + 6) & 0xff) << 8)
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+ (buffer.get (index + 7) & 0xff));
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return ((((long) buffer.get (index)) << 56)
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+ ((buffer.get (++index) & 0xffL) << 48)
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+ ((buffer.get (++index) & 0xffL) << 40)
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+ ((buffer.get (++index) & 0xffL) << 32)
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+ ((buffer.get (++index) & 0xffL) << 24)
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+ ((buffer.get (++index) & 0xff) << 16)
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+ ((buffer.get (++index) & 0xff) << 8)
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+ (buffer.get (++index) & 0xff));
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}
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public static final ByteBuffer putLong (ByteBuffer buffer, int index,
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@ -368,25 +324,25 @@ final class ByteBufferHelper
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if (buffer.order() == ByteOrder.LITTLE_ENDIAN)
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{
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buffer.put (index, (byte) (((int) value) & 0xff));
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buffer.put (index + 1, (byte) (((int) (value >> 8)) & 0xff));
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buffer.put (index + 2, (byte) (((int) (value >> 16)) & 0xff));
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buffer.put (index + 3, (byte) (((int) (value >> 24)) & 0xff));
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buffer.put (index + 4, (byte) (((int) (value >> 32)) & 0xff));
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buffer.put (index + 5, (byte) (((int) (value >> 40)) & 0xff));
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buffer.put (index + 6, (byte) (((int) (value >> 48)) & 0xff));
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buffer.put (index + 7, (byte) (((int) (value >> 56)) & 0xff));
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buffer.put (index, (byte) value);
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buffer.put (++index, (byte) (value >> 8));
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buffer.put (++index, (byte) (value >> 16));
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buffer.put (++index, (byte) (value >> 24));
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buffer.put (++index, (byte) (value >> 32));
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buffer.put (++index, (byte) (value >> 40));
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buffer.put (++index, (byte) (value >> 48));
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buffer.put (++index, (byte) (value >> 56));
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}
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else
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{
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buffer.put (index, (byte) (((int) (value >> 56)) & 0xff));
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buffer.put (index + 1, (byte) (((int) (value >> 48)) & 0xff));
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buffer.put (index + 2, (byte) (((int) (value >> 40)) & 0xff));
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buffer.put (index + 3, (byte) (((int) (value >> 32)) & 0xff));
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buffer.put (index + 4, (byte) (((int) (value >> 24)) & 0xff));
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buffer.put (index + 5, (byte) (((int) (value >> 16)) & 0xff));
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buffer.put (index + 6, (byte) (((int) (value >> 8)) & 0xff));
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buffer.put (index + 7, (byte) (((int) value) & 0xff));
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buffer.put (index, (byte) (value >> 56));
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buffer.put (++index, (byte) (value >> 48));
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buffer.put (++index, (byte) (value >> 40));
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buffer.put (++index, (byte) (value >> 32));
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buffer.put (++index, (byte) (value >> 24));
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buffer.put (++index, (byte) (value >> 16));
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buffer.put (++index, (byte) (value >> 8));
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buffer.put (++index, (byte) value);
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}
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return buffer;
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@ -399,7 +355,7 @@ final class ByteBufferHelper
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public static final ByteBuffer putFloat (ByteBuffer buffer, float value)
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{
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return putInt (buffer, Float.floatToIntBits (value));
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return putInt (buffer, Float.floatToRawIntBits (value));
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}
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public static final float getFloat (ByteBuffer buffer, int index)
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@ -410,7 +366,7 @@ final class ByteBufferHelper
|
|||
public static final ByteBuffer putFloat (ByteBuffer buffer, int index,
|
||||
float value)
|
||||
{
|
||||
return putInt (buffer, index, Float.floatToIntBits (value));
|
||||
return putInt (buffer, index, Float.floatToRawIntBits (value));
|
||||
}
|
||||
|
||||
public static final double getDouble (ByteBuffer buffer)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue