75 lines
1.7 KiB
Java
75 lines
1.7 KiB
Java
/**
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* fast data-reading from a byte-array
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*
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* @author ab
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*/
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package btools.mapaccess;
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final class ByteDataReader
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{
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private byte[] ab;
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private int aboffset;
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public ByteDataReader( byte[] byteArray )
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{
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ab = byteArray;
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}
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public int readInt()
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{
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int i3 = ab[aboffset++]& 0xff;
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int i2 = ab[aboffset++]& 0xff;
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int i1 = ab[aboffset++]& 0xff;
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int i0 = ab[aboffset++]& 0xff;
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return (i3 << 24) + (i2 << 16) + (i1 << 8) + i0;
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}
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public long readLong()
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{
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long i7 = ab[aboffset++]& 0xff;
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long i6 = ab[aboffset++]& 0xff;
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long i5 = ab[aboffset++]& 0xff;
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long i4 = ab[aboffset++]& 0xff;
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long i3 = ab[aboffset++]& 0xff;
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long i2 = ab[aboffset++]& 0xff;
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long i1 = ab[aboffset++]& 0xff;
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long i0 = ab[aboffset++]& 0xff;
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return (i7 << 56) + (i6 << 48) + (i5 << 40) + (i4 << 32) + (i3 << 24) + (i2 << 16) + (i1 << 8) + i0;
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}
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public boolean readBoolean()
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{
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int i0 = ab[aboffset++]& 0xff;
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return i0 != 0;
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}
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public byte readByte()
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{
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int i0 = ab[aboffset++] & 0xff;
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return (byte)(i0);
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}
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public short readShort()
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{
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int i1 = ab[aboffset++] & 0xff;
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int i0 = ab[aboffset++] & 0xff;
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return (short)( (i1 << 8) | i0);
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}
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public void readFully( byte[] ta )
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{
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System.arraycopy( ab, aboffset, ta, 0, ta.length );
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aboffset += ta.length;
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}
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@Override
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public String toString()
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{
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StringBuilder sb = new StringBuilder( "[" );
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for( int i=0; i<ab.length; i++ ) sb.append( i == 0 ? " " : ", " ).append( Integer.toString( ab[i] ) );
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sb.append( " ]" );
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return sb.toString();
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}
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}
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