Package org.apache.harmony.pack200

Examples of org.apache.harmony.pack200.BHSDCodec

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            assertTrue(true);
        }
    }

    public void testByte1Signed() throws Exception {
        Codec BYTE1S2 = new BHSDCodec(1, 256, 2);
        decode(BYTE1S2, new byte[] { 0 }, 0, 0);
        decode(BYTE1S2, new byte[] { 1 }, 1, 0);
        decode(BYTE1S2, new byte[] { 2 }, 2, 0);
        decode(BYTE1S2, new byte[] { 3 }, -1, 0);
        decode(BYTE1S2, new byte[] { 4 }, 3, 0);
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        decode(BYTE1S2, new byte[] { 10 }, 8, 0);
        decode(BYTE1S2, new byte[] { 11 }, -3, 0);
    }

    public void testCardinality() throws Exception {
        BHSDCodec byte1 = Codec.BYTE1;
        assertEquals(256, byte1.cardinality());
        assertEquals(0, byte1.smallest());
        assertEquals(255, byte1.largest());
        assertFalse(byte1.encodes(-257));
        assertFalse(byte1.encodes(-256));
        assertFalse(byte1.encodes(-255));
        assertFalse(byte1.encodes(-129));
        assertFalse(byte1.encodes(-128));
        assertFalse(byte1.encodes(-127));
        assertFalse(byte1.encodes(-1));
        assertTrue(byte1.encodes(0));
        assertTrue(byte1.encodes(1));
        assertTrue(byte1.encodes(255));
        assertFalse(byte1.encodes(256));
        BHSDCodec byte1s = new BHSDCodec(1, 256, 1);
        assertEquals(256, byte1s.cardinality());
        assertEquals(-128, byte1s.smallest());
        assertEquals(127, byte1s.largest());
        assertFalse(byte1s.encodes(-257));
        assertFalse(byte1s.encodes(-256));
        assertFalse(byte1s.encodes(-255));
        assertFalse(byte1s.encodes(-129));
        assertTrue(byte1s.encodes(-128));
        assertTrue(byte1s.encodes(-127));
        assertTrue(byte1s.encodes(-1));
        assertTrue(byte1s.encodes(0));
        assertTrue(byte1s.encodes(1));
        assertTrue(byte1s.encodes(127));
        assertFalse(byte1s.encodes(128));
        assertFalse(byte1s.encodes(129));
        assertFalse(byte1s.encodes(255));
        assertFalse(byte1s.encodes(256));
        BHSDCodec byte2s = new BHSDCodec(1, 256, 2);
        assertEquals(256, byte2s.cardinality());
        assertEquals(-64, byte2s.smallest());
        assertEquals(191, byte2s.largest());
        assertFalse(byte2s.encodes(-257));
        assertFalse(byte2s.encodes(-256));
        assertFalse(byte2s.encodes(-255));
        assertFalse(byte2s.encodes(-129));
        assertFalse(byte2s.encodes(-128));
        assertFalse(byte2s.encodes(-127));
        assertFalse(byte2s.encodes(-65));
        assertTrue(byte2s.encodes(-64));
        assertTrue(byte2s.encodes(-64));
        assertTrue(byte2s.encodes(-1));
        assertTrue(byte2s.encodes(0));
        assertTrue(byte2s.encodes(1));
        assertTrue(byte2s.encodes(127));
        assertTrue(byte2s.encodes(128));
        assertTrue(byte2s.encodes(191));
        assertFalse(byte2s.encodes(192));
        assertFalse(byte2s.encodes(256));
    }
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        }

    };

    public void testDecodeBandInt() throws IOException, Pack200Exception {
        BHSDCodec codec = Codec.BYTE1;
        byte[] bytes = new byte[] { (byte) 3, (byte) 56, (byte) 122, (byte) 78 };
        InputStream in = new ByteArrayInputStream(bytes);
        int[] ints = bandSet.decodeBandInt("Test Band", in, codec, 4);
        for (int i = 0; i < ints.length; i++) {
            assertEquals("Wrong value in position " + i, ints[i], bytes[i]);
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        checkAscendingCardinalities(CanonicalCodecFamilies.deltaUnsignedCodecs5);
    }

    private void checkAscendingCardinalities(BHSDCodec[] family) {
        for (int i = 1; i < family.length; i++) {
            BHSDCodec previous = family[i-1];
            BHSDCodec codec = family[i];
            assertTrue(codec.largest() >= previous.largest());
            assertTrue(codec.smallest() <= previous.smallest());
        }
    }
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public class BHSDCodecTest extends TestCase {

    public void testEncodeDecode() throws IOException, Pack200Exception {
        for (int i = 1; i < 116; i++) {

            BHSDCodec codec = (BHSDCodec) CodecEncoding.getCodec(i, null, null);

            if (!codec.isDelta()) {
                // Test encode-decode with a selection of numbers within the
                // range of the codec
                long largest = codec.largest();
                long smallest = codec.isSigned() ? codec.smallest() : 0;
                if(smallest < Integer.MIN_VALUE) smallest = Integer.MIN_VALUE;
                long difference = (largest - smallest) / 4;
                for (long j = smallest; j <= largest; j += difference) {
                    if(j > Integer.MAX_VALUE) {
                        break;
                    }
                    byte[] encoded = codec.encode((int)j, 0);
                    long decoded = 0;
                    try {
                        decoded = codec.decode(
                                new ByteArrayInputStream(encoded), 0);
                    } catch (EOFException e) {
                        System.out.println(e);
                    }
                    if (j != decoded) {
                        fail("Failed with codec: " + i + ", " + codec
                                + " expected: " + j + ", got: " + decoded);
                    }
                }
            }

            // Test encode-decode with 0
            assertEquals(0, codec.decode(new ByteArrayInputStream(codec.encode(
                    0, 0)), 0));
        }
    }
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                boolean favouredValue = Arrays.binarySearch(favoured, band[i]) > -1;
                Codec theCodec = favouredValue ? popCodec.getFavouredCodec()
                        : popCodec.getUnfavouredCodec();
                if (theCodec instanceof BHSDCodec
                        && ((BHSDCodec) theCodec).isDelta()) {
                    BHSDCodec bhsd = (BHSDCodec) theCodec;
                    long cardinality = bhsd.cardinality();
                    while (band[i] > bhsd.largest()) {
                        band[i] -= cardinality;
                    }
                    while (band[i] < bhsd.smallest()) {
                        band[i] += cardinality;
                    }
                }
            }
        }
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        } else {
            // First element should not be discarded
            band = codec.decodeInts(count - 1, in, first);
        }
        if (codecUsed instanceof BHSDCodec && ((BHSDCodec) codecUsed).isDelta()) {
            BHSDCodec bhsd = (BHSDCodec) codecUsed;
            long cardinality = bhsd.cardinality();
            for (int i = 0; i < band.length; i++) {
                while (band[i] > bhsd.largest()) {
                    band[i] -= cardinality;
                }
                while (band[i] < bhsd.smallest()) {
                    band[i] += cardinality;
                }
            }
        } else if (codecUsed instanceof PopulationCodec) {
            PopulationCodec popCodec = (PopulationCodec) codecUsed;
            long[] favoured = (long[]) popCodec.getFavoured().clone();
            Arrays.sort(favoured);
            for (int i = 0; i < band.length; i++) {
                boolean favouredValue = Arrays.binarySearch(favoured, band[i]) > -1;
                Codec theCodec = favouredValue ? popCodec.getFavouredCodec()
                        : popCodec.getUnvafouredCodec();
                if (theCodec instanceof BHSDCodec
                        && ((BHSDCodec) theCodec).isDelta()) {
                    BHSDCodec bhsd = (BHSDCodec) theCodec;
                    long cardinality = bhsd.cardinality();
                    while (band[i] > bhsd.largest()) {
                        band[i] -= cardinality;
                    }
                    while (band[i] < bhsd.smallest()) {
                        band[i] += cardinality;
                    }
                }
            }
        }
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            // First element should not be discarded
            band = codec.decode(count - 1, in, first);
        }

        if (codecUsed instanceof BHSDCodec && ((BHSDCodec) codecUsed).isDelta()) {
            BHSDCodec bhsd = (BHSDCodec) codecUsed;
            long cardinality = bhsd.cardinality();
            for (int i = 0; i < band.length; i++) {
                while (band[i] > bhsd.largest()) {
                    band[i] -= cardinality;
                }
                while (band[i] < bhsd.smallest()) {
                    band[i] += cardinality;
                }
            }
        } else if (codecUsed instanceof PopulationCodec) {
            PopulationCodec popCodec = (PopulationCodec) codecUsed;
            long[] favoured = (long[]) popCodec.getFavoured().clone();
            Arrays.sort(favoured);
            for (int i = 0; i < band.length; i++) {
                boolean favouredValue = Arrays.binarySearch(favoured, band[i]) > -1;
                Codec theCodec = favouredValue ? popCodec.getFavouredCodec()
                        : popCodec.getUnvafouredCodec();
                if (theCodec instanceof BHSDCodec
                        && ((BHSDCodec) theCodec).isDelta()) {
                    BHSDCodec bhsd = (BHSDCodec) theCodec;
                    long cardinality = bhsd.cardinality();
                    while (band[i] > bhsd.largest()) {
                        band[i] -= cardinality;
                    }
                    while (band[i] < bhsd.smallest()) {
                        band[i] += cardinality;
                    }
                }
            }
        }
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        } else {
            // First element should not be discarded
            band = codec.decodeInts(count - 1, in, first);
        }
        if (codecUsed instanceof BHSDCodec && ((BHSDCodec) codecUsed).isDelta()) {
            BHSDCodec bhsd = (BHSDCodec) codecUsed;
            long cardinality = bhsd.cardinality();
            for (int i = 0; i < band.length; i++) {
                while (band[i] > bhsd.largest()) {
                    band[i] -= cardinality;
                }
                while (band[i] < bhsd.smallest()) {
                    band[i] += cardinality;
                }
            }
        } else if (codecUsed instanceof PopulationCodec) {
            PopulationCodec popCodec = (PopulationCodec) codecUsed;
            long[] favoured = (long[]) popCodec.getFavoured().clone();
            Arrays.sort(favoured);
            for (int i = 0; i < band.length; i++) {
                boolean favouredValue = Arrays.binarySearch(favoured, band[i]) > -1;
                Codec theCodec = favouredValue ? popCodec.getFavouredCodec()
                        : popCodec.getUnvafouredCodec();
                if (theCodec instanceof BHSDCodec
                        && ((BHSDCodec) theCodec).isDelta()) {
                    BHSDCodec bhsd = (BHSDCodec) theCodec;
                    long cardinality = bhsd.cardinality();
                    while (band[i] > bhsd.largest()) {
                        band[i] -= cardinality;
                    }
                    while (band[i] < bhsd.smallest()) {
                        band[i] += cardinality;
                    }
                }
            }
        }
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            // First element should not be discarded
            band = codec.decode(count - 1, in, first);
        }

        if (codecUsed instanceof BHSDCodec && ((BHSDCodec) codecUsed).isDelta()) {
            BHSDCodec bhsd = (BHSDCodec) codecUsed;
            long cardinality = bhsd.cardinality();
            for (int i = 0; i < band.length; i++) {
                while (band[i] > bhsd.largest()) {
                    band[i] -= cardinality;
                }
                while (band[i] < bhsd.smallest()) {
                    band[i] += cardinality;
                }
            }
        } else if (codecUsed instanceof PopulationCodec) {
            PopulationCodec popCodec = (PopulationCodec) codecUsed;
            long[] favoured = (long[]) popCodec.getFavoured().clone();
            Arrays.sort(favoured);
            for (int i = 0; i < band.length; i++) {
                boolean favouredValue = Arrays.binarySearch(favoured, band[i]) > -1;
                Codec theCodec = favouredValue ? popCodec.getFavouredCodec()
                        : popCodec.getUnvafouredCodec();
                if (theCodec instanceof BHSDCodec
                        && ((BHSDCodec) theCodec).isDelta()) {
                    BHSDCodec bhsd = (BHSDCodec) theCodec;
                    long cardinality = bhsd.cardinality();
                    while (band[i] > bhsd.largest()) {
                        band[i] -= cardinality;
                    }
                    while (band[i] < bhsd.smallest()) {
                        band[i] += cardinality;
                    }
                }
            }
        }
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Related Classes of org.apache.harmony.pack200.BHSDCodec

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  • org.apache.bcel.classfile.Unknown
  • org.apache.harmony.pack200.Archive
  • org.apache.harmony.pack200.Archive.PackingFile
  • org.apache.harmony.pack200.AttributeDefinitionBands.AttributeDefinition
  • org.apache.harmony.pack200.AttributeLayout
  • org.apache.harmony.pack200.AttributeLayoutMap
  • org.apache.harmony.pack200.BandSet
  • org.apache.harmony.pack200.BcBands
  • org.apache.harmony.pack200.BHSDCodec
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