Examples of org.apache.commons.io.output.ByteArrayOutputStream

org.apache.commons.io.output.ByteArrayOutputStream
This class implements an output stream in which the data is written into a byte array. The buffer automatically grows as data is written to it.
The data can be retrieved using toByteArray() and toString().
Closing a ByteArrayOutputStream has no effect. The methods in this class can be called after the stream has been closed without generating an IOException.
This is an alternative implementation of the java.io.ByteArrayOutputStream class. The original implementation only allocates 32 bytes at the beginning. As this class is designed for heavy duty it starts at 1024 bytes. In contrast to the original it doesn't reallocate the whole memory block but allocates additional buffers. This way no buffers need to be garbage collected and the contents don't have to be copied to the new buffer. This class is designed to behave exactly like the original. The only exception is the deprecated toString(int) method that has been ignored. @author Jeremias Maerki @version $Id: ByteArrayOutputStream.java 369075 2006-01-14 18:23:42Z scolebourne $

    public void testWriteLines_Writer() throws Exception {
        Object[] data = new Object[] {
            "hello", new StringBuffer("world"), "", "this is", null, "some text"};
        List<Object> list = Arrays.asList(data);
        
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
        Writer writer = new OutputStreamWriter(baout, "US-ASCII");
        
        IOUtils.writeLines(list, "*", writer);
        
        out.off();
        writer.flush();
        
        String expected = "hello*world**this is**some text*";
        String actual = baout.toString();
        assertEquals(expected, actual);
    }

View Full Code Here

        String actual = baout.toString();
        assertEquals(expected, actual);
    }


    public void testWriteLines_Writer_nullData() throws Exception {
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
        Writer writer = new OutputStreamWriter(baout, "US-ASCII");
        
        IOUtils.writeLines((List<?>) null, "*", writer);
        out.off();
        writer.flush();
        
        assertEquals("Sizes differ", 0, baout.size());
    }

View Full Code Here


    public void testWriteLines_Writer_nullSeparator() throws Exception {
        Object[] data = new Object[] {"hello", "world"};
        List<Object> list = Arrays.asList(data);
            
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        YellOnFlushAndCloseOutputStream out = new YellOnFlushAndCloseOutputStream(baout, true, true);
        Writer writer = new OutputStreamWriter(baout, "US-ASCII");
        
        IOUtils.writeLines(list, (String) null, writer);
        out.off();
        writer.flush();
        
        String expected = "hello" + IOUtils.LINE_SEPARATOR + "world" + IOUtils.LINE_SEPARATOR;
        String actual = baout.toString();
        assertEquals(expected, actual);
    }

View Full Code Here

        byte[] testArray = new byte[256];


        for (int j = 0; j < 256; j++) {
            testArray[j] = (byte) j;
        }
        ByteArrayOutputStream stream = new ByteArrayOutputStream();


        HexDump.dump(testArray, 0, stream, 0);
        byte[] outputArray = new byte[16 * (73 + HexDump.EOL.length())];


        for (int j = 0; j < 16; j++) {
            int offset = (73 + HexDump.EOL.length()) * j;


            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) toHex(j);
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) ' ';
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toHex(j);
                outputArray[offset++] = (byte) toHex(k);
                outputArray[offset++] = (byte) ' ';
            }
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toAscii((j * 16) + k);
            }
            System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset,
                    HexDump.EOL.getBytes().length);
        }
        byte[] actualOutput = stream.toByteArray();


        assertEquals("array size mismatch", outputArray.length,
                actualOutput.length);
        for (int j = 0; j < outputArray.length; j++) {
            assertEquals("array[ " + j + "] mismatch", outputArray[j],
                    actualOutput[j]);
        }


        // verify proper behavior with non-zero offset
        stream = new ByteArrayOutputStream();
        HexDump.dump(testArray, 0x10000000, stream, 0);
        outputArray = new byte[16 * (73 + HexDump.EOL.length())];
        for (int j = 0; j < 16; j++) {
            int offset = (73 + HexDump.EOL.length()) * j;


            outputArray[offset++] = (byte) '1';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) toHex(j);
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) ' ';
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toHex(j);
                outputArray[offset++] = (byte) toHex(k);
                outputArray[offset++] = (byte) ' ';
            }
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toAscii((j * 16) + k);
            }
            System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset,
                    HexDump.EOL.getBytes().length);
        }
        actualOutput = stream.toByteArray();
        assertEquals("array size mismatch", outputArray.length,
                actualOutput.length);
        for (int j = 0; j < outputArray.length; j++) {
            assertEquals("array[ " + j + "] mismatch", outputArray[j],
                    actualOutput[j]);
        }


        // verify proper behavior with negative offset
        stream = new ByteArrayOutputStream();
        HexDump.dump(testArray, 0xFF000000, stream, 0);
        outputArray = new byte[16 * (73 + HexDump.EOL.length())];
        for (int j = 0; j < 16; j++) {
            int offset = (73 + HexDump.EOL.length()) * j;


            outputArray[offset++] = (byte) 'F';
            outputArray[offset++] = (byte) 'F';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) toHex(j);
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) ' ';
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toHex(j);
                outputArray[offset++] = (byte) toHex(k);
                outputArray[offset++] = (byte) ' ';
            }
            for (int k = 0; k < 16; k++) {
                outputArray[offset++] = (byte) toAscii((j * 16) + k);
            }
            System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset,
                    HexDump.EOL.getBytes().length);
        }
        actualOutput = stream.toByteArray();
        assertEquals("array size mismatch", outputArray.length,
                actualOutput.length);
        for (int j = 0; j < outputArray.length; j++) {
            assertEquals("array[ " + j + "] mismatch", outputArray[j],
                    actualOutput[j]);
        }


        // verify proper behavior with non-zero index
        stream = new ByteArrayOutputStream();
        HexDump.dump(testArray, 0x10000000, stream, 0x81);
        outputArray = new byte[(8 * (73 + HexDump.EOL.length())) - 1];
        for (int j = 0; j < 8; j++) {
            int offset = (73 + HexDump.EOL.length()) * j;


            outputArray[offset++] = (byte) '1';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) '0';
            outputArray[offset++] = (byte) toHex(j + 8);
            outputArray[offset++] = (byte) '1';
            outputArray[offset++] = (byte) ' ';
            for (int k = 0; k < 16; k++) {
                int index = 0x81 + (j * 16) + k;


                if (index < 0x100) {
                    outputArray[offset++] = (byte) toHex(index / 16);
                    outputArray[offset++] = (byte) toHex(index);
                } else {
                    outputArray[offset++] = (byte) ' ';
                    outputArray[offset++] = (byte) ' ';
                }
                outputArray[offset++] = (byte) ' ';
            }
            for (int k = 0; k < 16; k++) {
                int index = 0x81 + (j * 16) + k;


                if (index < 0x100) {
                    outputArray[offset++] = (byte) toAscii(index);
                }
            }
            System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset,
                    HexDump.EOL.getBytes().length);
        }
        actualOutput = stream.toByteArray();
        assertEquals("array size mismatch", outputArray.length,
                actualOutput.length);
        for (int j = 0; j < outputArray.length; j++) {
            assertEquals("array[ " + j + "] mismatch", outputArray[j],
                    actualOutput[j]);
        }


        // verify proper behavior with negative index
        try {
            HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(),
                    -1);
            fail("should have caught ArrayIndexOutOfBoundsException on negative index");
        } catch (ArrayIndexOutOfBoundsException ignored_exception) {


            // as expected
        }


        // verify proper behavior with index that is too large
        try {
            HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(),
                    testArray.length);
            fail("should have caught ArrayIndexOutOfBoundsException on large index");
        } catch (ArrayIndexOutOfBoundsException ignored_exception) {


            // as expected

View Full Code Here

        new CopyUtils();
        // Nothing to assert, the constructor is public and does not blow up.
    }
    
    public void testCopy_byteArrayToOutputStream() throws Exception {
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
        
        CopyUtils.copy(inData, out);


        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }

View Full Code Here

        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }


    public void testCopy_byteArrayToWriter() throws Exception {
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
        Writer writer = new java.io.OutputStreamWriter(out, "US-ASCII");
        
        CopyUtils.copy(inData, writer);
        writer.flush();


        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }

View Full Code Here


    public void testCopy_inputStreamToOutputStream() throws Exception {
        InputStream in = new ByteArrayInputStream(inData);
        in = new YellOnCloseInputStream(in);


        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);


        int count = CopyUtils.copy(in, out);
        
        assertEquals("Not all bytes were read", 0, in.available());
        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
        assertEquals(inData.length, count);
    }

View Full Code Here


    public void testCopy_inputStreamToWriter() throws Exception {
        InputStream in = new ByteArrayInputStream(inData);
        in = new YellOnCloseInputStream(in);


        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
        Writer writer = new java.io.OutputStreamWriter(out, "US-ASCII");
        
        CopyUtils.copy(in, writer);
        writer.flush();


        assertEquals("Not all bytes were read", 0, in.available());
        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }

View Full Code Here

    public void testCopy_readerToOutputStream() throws Exception {
        InputStream in = new ByteArrayInputStream(inData);
        in = new YellOnCloseInputStream(in);
        Reader reader = new java.io.InputStreamReader(in, "US-ASCII");
        
        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
        
        CopyUtils.copy(reader, out);
        //Note: this method *does* flush. It is equivalent to:
        //  OutputStreamWriter _out = new OutputStreamWriter(fout);
        //  IOUtils.copy( fin, _out, 4096 ); // copy( Reader, Writer, int );
        //  _out.flush();
        //  out = fout;


        // Note: rely on the method to flush
        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }

View Full Code Here

    public void testCopy_readerToWriter() throws Exception {
        InputStream in = new ByteArrayInputStream(inData);
        in = new YellOnCloseInputStream(in);
        Reader reader = new java.io.InputStreamReader(in, "US-ASCII");


        ByteArrayOutputStream baout = new ByteArrayOutputStream();
        OutputStream out = new YellOnFlushAndCloseOutputStream(baout, false, true);
        Writer writer = new java.io.OutputStreamWriter(out, "US-ASCII");


        int count = CopyUtils.copy(reader, writer);
        writer.flush();
        assertEquals(
            "The number of characters returned by copy is wrong",
            inData.length,
            count);
        assertEquals("Sizes differ", inData.length, baout.size());
        assertTrue("Content differs", Arrays.equals(inData, baout.toByteArray()));
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.apache.commons.io.output.ByteArrayOutputStream

com.baasbox.service.storage.AssetService

com.baasbox.service.storage.StorageUtils

com.bradmcevoy.http.TestXmlWriter

com.bradmcevoy.http.TFolderResource

com.bradmcevoy.io.BufferingOutputStreamTest

com.datasalt.pangool.tuplemr.serialization.TestSimpleTupleDeserializer

com.eatle.web.action.backend.DownloadAction

com.ettrema.http.caldav.demo.TFolderResource

com.mycompany.TFolderResource

com.netflix.zeno.examples.MultipleImageSerializationExample

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.