Examples of java.util.zip.ZipInputStream.available()

java.util.zip.ZipInputStream.available()
Returns 0 after EOF has reached for the current entry data, otherwise always return 1.
Programs should not count on this method to return the actual number of bytes that could be read without blocking. @return 1 before EOF and 0 after EOF has reached for current entry. @exception IOException if an I/O error occurs.

            if (entry==null) {
                break;
            }


            while (zin.available()>0) {
                zin.skip(zin.available());
            }
        }
    }
}

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  private boolean findThemeDescriptor(File jarFile) throws MojoExecutionException {
    ZipInputStream zip = null;
    try {
      zip = new ZipInputStream(new FileInputStream(jarFile));
      while (zip.available() > 0) {
        ZipEntry nextEntry = zip.getNextEntry();
        if (nextEntry == null || nextEntry.isDirectory()) {
          continue;
        }
        String name = nextEntry.getName();

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      InputStream stream = null;
      ZipInputStream zipStream = null;
      try {
        stream = jarFile.openStream();
        zipStream = new ZipInputStream(stream);
        while (zipStream.available() > 0) {
          ZipEntry nextEntry = zipStream.getNextEntry();
          if (nextEntry == null || nextEntry.isDirectory()) {
            continue;
          }
          String name = "/" + nextEntry.getName();

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      InputStream stream = null;
      ZipInputStream zipStream = null;
      try {
        stream = jarFile.openStream();
        zipStream = new ZipInputStream(stream);
        while (zipStream.available() > 0) {
          ZipEntry nextEntry = zipStream.getNextEntry();
          if (nextEntry == null || nextEntry.isDirectory()) {
            continue;
          }
          String name = "/" + nextEntry.getName();

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      final ZipInputStream zis = new ZipInputStream(is);


      ZipEntry theEntry;


      while (zis.available() > 0) {
        theEntry = zis.getNextEntry();
        if ((entry != null)
      && !"xl/worksheets/sheet1.xml".equals(entry.getName())) {


          final ZipEntry entry2 = new ZipEntry(theEntry);

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        // now we will extract the document and write it into a byte array
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        byte[] buffer = new byte[8192];
        int length = -1;
        while (zipStream.available() > 0) {
            length = zipStream.read(buffer, 0, 8192);
            if (length > 0) {
                baos.write(buffer, 0, length);
            }
        }

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            ZipEntry entry = zin.getNextEntry();
            if (entry==null) {
                break;
            }


            while (zin.available()>0) {
                zin.skip(zin.available());
            }
        }
    }
    public void testDataLength() throws Exception {

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            if (entry==null) {
                break;
            }


            while (zin.available()>0) {
                zin.skip(zin.available());
            }
        }
    }
    public void testDataLength() throws Exception {
        POIFSFileSystem fs = new POIFSFileSystem(POIDataSamples.getPOIFSInstance().openResourceAsStream("protected_agile.docx"));

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            ZipEntry entry = zin.getNextEntry();
            if (entry==null) {
                break;
            }


            while (zin.available()>0) {
                zin.skip(zin.available());
            }
        }
    }

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            if (entry==null) {
                break;
            }


            while (zin.available()>0) {
                zin.skip(zin.available());
            }
        }
    }


}

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