Package org.apache.commons.vfs2

Examples of org.apache.commons.vfs2.RandomAccessContent

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    {
        FileObject file = null;
        try
        {
            file = getReadFolder().resolveFile("file1.txt");
            RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READ);

            // read first byte
            byte c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(0));
            assertEquals("fp", ra.getFilePointer(), 1);

            // start at pos 4
            ra.seek(3);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(3));
            assertEquals("fp", ra.getFilePointer(), 4);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(4));
            assertEquals("fp", ra.getFilePointer(), 5);

            // restart at pos 4
            ra.seek(3);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(3));
            assertEquals("fp", ra.getFilePointer(), 4);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(4));
            assertEquals("fp", ra.getFilePointer(), 5);

            // advance to pos 11
            ra.seek(10);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(10));
            assertEquals("fp", ra.getFilePointer(), 11);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(11));
            assertEquals("fp", ra.getFilePointer(), 12);
        }
        finally
        {
            if (file != null)
            {
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        FileObject file = null;
        try
        {
            file = createScratchFolder().resolveFile("random_write.txt");
            file.createFile();
            RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READWRITE);

            // write first byte
            ra.writeByte(TEST_DATA.charAt(0));

            // start at pos 4
            ra.seek(3);
            ra.writeByte(TEST_DATA.charAt(3));
            ra.writeByte(TEST_DATA.charAt(4));

            // restart at pos 4 (but overwrite with different content)
            ra.seek(3);
            ra.writeByte(TEST_DATA.charAt(7));
            ra.writeByte(TEST_DATA.charAt(8));

            // advance to pos 11
            ra.seek(10);
            ra.writeByte(TEST_DATA.charAt(10));
            ra.writeByte(TEST_DATA.charAt(11));

            // now read
            ra.seek(0);
            assertEquals(ra.readByte(), TEST_DATA.charAt(0));

            ra.seek(3);
            assertEquals(ra.readByte(), TEST_DATA.charAt(7));
            assertEquals(ra.readByte(), TEST_DATA.charAt(8));

            ra.seek(10);
            assertEquals(ra.readByte(), TEST_DATA.charAt(10));
            assertEquals(ra.readByte(), TEST_DATA.charAt(11));
        }
        finally
        {
            if (file != null)
            {
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  @Override
  public IReadOnlyAccess getReadOnlyAccess() throws IOException {
    IReadOnlyAccess input = null;
    try {
      RandomAccessContent rac = file.getContent().getRandomAccessContent(
          RandomAccessMode.READ);
      input = new RandomAccessContentAccess(rac);
    } catch (Exception e) {
      input = new InputStreamReadOnlyAccessFile(file.getContent()
          .getInputStream());
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            throw new FileSystemException("vfs.provider/read-in-use.error", file);
        }
        */

        // Get the content
        final RandomAccessContent rastr = fileObject.getRandomAccessContent(mode);

        FileRandomAccessContent rac = new FileRandomAccessContent(fileObject, rastr);
        this.getThreadData().addRastr(rac);
        streamOpened();

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            }

            // Close the randomAccess stream
            while (getThreadData().getRastrsSize() > 0)
            {
                final RandomAccessContent ra = (RandomAccessContent) getThreadData().removeRastr(0);
                try
                {
                    ra.close();
                }
                catch (IOException e)
                {
                    throw new FileSystemException(e);
                }
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    {
        FileObject file = null;
        try
        {
            file = getReadFolder().resolveFile("file1.txt");
            RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READ);

            // read first byte
            byte c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(0));
            assertEquals("fp", ra.getFilePointer(), 1);

            // start at pos 4
            ra.seek(3);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(3));
            assertEquals("fp", ra.getFilePointer(), 4);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(4));
            assertEquals("fp", ra.getFilePointer(), 5);

            // restart at pos 4
            ra.seek(3);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(3));
            assertEquals("fp", ra.getFilePointer(), 4);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(4));
            assertEquals("fp", ra.getFilePointer(), 5);

            // advance to pos 11
            ra.seek(10);
            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(10));
            assertEquals("fp", ra.getFilePointer(), 11);

            c = ra.readByte();
            assertEquals(c, TEST_DATA.charAt(11));
            assertEquals("fp", ra.getFilePointer(), 12);
        }
        finally
        {
            if (file != null)
            {
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        FileObject file = null;
        try
        {
            file = createScratchFolder().resolveFile("random_write.txt");
            file.createFile();
            RandomAccessContent ra = file.getContent().getRandomAccessContent(RandomAccessMode.READWRITE);

            // write first byte
            ra.writeByte(TEST_DATA.charAt(0));

            // start at pos 4
            ra.seek(3);
            ra.writeByte(TEST_DATA.charAt(3));
            ra.writeByte(TEST_DATA.charAt(4));

            // restart at pos 4 (but overwrite with different content)
            ra.seek(3);
            ra.writeByte(TEST_DATA.charAt(7));
            ra.writeByte(TEST_DATA.charAt(8));

            // advance to pos 11
            ra.seek(10);
            ra.writeByte(TEST_DATA.charAt(10));
            ra.writeByte(TEST_DATA.charAt(11));

            // now read
            ra.seek(0);
            assertEquals(ra.readByte(), TEST_DATA.charAt(0));

            ra.seek(3);
            assertEquals(ra.readByte(), TEST_DATA.charAt(7));
            assertEquals(ra.readByte(), TEST_DATA.charAt(8));

            ra.seek(10);
            assertEquals(ra.readByte(), TEST_DATA.charAt(10));
            assertEquals(ra.readByte(), TEST_DATA.charAt(11));
        }
        finally
        {
            if (file != null)
            {
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            throw new FileSystemException("vfs.provider/read-in-use.error", file);
        }
        */

        // Get the content
        final RandomAccessContent rastr = fileObject.getRandomAccessContent(mode);

        FileRandomAccessContent rac = new FileRandomAccessContent(fileObject, rastr);
        this.getThreadData().addRastr(rac);
        streamOpened();

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            }

            // Close the randomAccess stream
            while (getThreadData().getRastrsSize() > 0)
            {
                final RandomAccessContent ra = (RandomAccessContent) getThreadData().removeRastr(0);
                try
                {
                    ra.close();
                }
                catch (IOException e)
                {
                    throw new FileSystemException(e);
                }
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        try
        {
            long newFileStart = this.fileStart+start;
            long newFileEnd = end<0?this.fileEnd:this.fileStart+end;

            RandomAccessContent rac = fo.getContent().getRandomAccessContent(RandomAccessMode.READ);
            rac.seek(newFileStart);
            return new SharedRandomContentInputStream(
                createdStreams,
                fo,
                newFileStart,
                newFileEnd,
                rac.getInputStream());
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
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