Package org.apache.poi.poifs.filesystem

Examples of org.apache.poi.poifs.filesystem.NPOIFSFileSystem

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     */
    public void testDifferentPOIFS() throws Exception {
       // Open the two filesystems
       DirectoryNode[] files = new DirectoryNode[2];
       files[0] = (new POIFSFileSystem(HSSFTestDataSamples.openSampleFileStream("Simple.xls"))).getRoot();
       files[1] = (new NPOIFSFileSystem(HSSFTestDataSamples.getSampeFile("Simple.xls"))).getRoot();
      
       // Open without preserving nodes
       for(DirectoryNode dir : files) {
          HSSFWorkbook workbook = new HSSFWorkbook(dir, false);
          HSSFSheet sheet = workbook.getSheetAt(0);
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    public void testWordDocEmbeddedInXls() throws IOException {
       // Open the two filesystems
       DirectoryNode[] files = new DirectoryNode[2];
       files[0] = (new POIFSFileSystem(HSSFTestDataSamples.openSampleFileStream("WithEmbeddedObjects.xls"))).getRoot();
       files[1] = (new NPOIFSFileSystem(HSSFTestDataSamples.getSampeFile("WithEmbeddedObjects.xls"))).getRoot();
      
       // Check the embedded parts
       for(DirectoryNode root : files) {
          HSSFWorkbook hw = new HSSFWorkbook(root, true);
          List<HSSFObjectData> objects = hw.getAllEmbeddedObjects();
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     *  again (via POIFS) and have it be valid
     * @throws IOException
     */
    public void testWriteWorkbookFromNPOIFS() throws IOException {
       InputStream is = HSSFTestDataSamples.openSampleFileStream("WithEmbeddedObjects.xls");
       NPOIFSFileSystem fs = new NPOIFSFileSystem(is);
      
       // Start as NPOIFS
       HSSFWorkbook wb = new HSSFWorkbook(fs.getRoot(), true);
       assertEquals(3, wb.getNumberOfSheets());
       assertEquals("Root xls", wb.getSheetAt(0).getRow(0).getCell(0).getStringCellValue());
      
       // Will switch to POIFS
       wb = HSSFTestDataSamples.writeOutAndReadBack(wb);
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        xhtml.startDocument();

        final DirectoryNode root;
        TikaInputStream tstream = TikaInputStream.cast(stream);
        if (tstream == null) {
            root = new NPOIFSFileSystem(new CloseShieldInputStream(stream)).getRoot();
        } else {
            final Object container = tstream.getOpenContainer();
            if (container instanceof NPOIFSFileSystem) {
                root = ((NPOIFSFileSystem) container).getRoot();
            } else if (container instanceof DirectoryNode) {
                root = (DirectoryNode) container;
            } else if (tstream.hasFile()) {
                root = new NPOIFSFileSystem(tstream.getFile(), true).getRoot();
            } else {
                root = new NPOIFSFileSystem(new CloseShieldInputStream(tstream)).getRoot();
            }
        }
        parse(root, context, metadata, xhtml);
        xhtml.endDocument();
    }
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        // Force the document stream to a (possibly temporary) file
        // so we don't modify the current position of the stream
        FileChannel channel = stream.getFileChannel();

        try {
            NPOIFSFileSystem fs = new NPOIFSFileSystem(channel);

            // Optimize a possible later parsing process by keeping
            // a reference to the already opened POI file system
            stream.setOpenContainer(fs);

            return getTopLevelNames(fs.getRoot());
        } catch (IOException e) {
            // Parse error in POI, so we don't know the file type
            return Collections.emptySet();
        } catch (RuntimeException e) {
            // Another problem in POI
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        xhtml.startDocument();

        final DirectoryNode root;
        TikaInputStream tstream = TikaInputStream.cast(stream);
        if (tstream == null) {
            root = new NPOIFSFileSystem(new CloseShieldInputStream(stream)).getRoot();
        } else {
            final Object container = tstream.getOpenContainer();
            if (container instanceof NPOIFSFileSystem) {
                root = ((NPOIFSFileSystem) container).getRoot();
            } else if (container instanceof DirectoryNode) {
                root = (DirectoryNode) container;
            } else if (tstream.hasFile()) {
                root = new NPOIFSFileSystem(tstream.getFileChannel()).getRoot();
            } else {
                root = new NPOIFSFileSystem(new CloseShieldInputStream(tstream)).getRoot();
            }
        }
        parse(root, context, metadata, xhtml);
        xhtml.endDocument();
    }
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        // Force the document stream to a (possibly temporary) file
        // so we don't modify the current position of the stream
        FileChannel channel = stream.getFileChannel();

        try {
            NPOIFSFileSystem fs = new NPOIFSFileSystem(channel);

            // Optimize a possible later parsing process by keeping
            // a reference to the already opened POI file system
            stream.setOpenContainer(fs);

            return getTopLevelNames(fs.getRoot());
        } catch (IOException e) {
            // Parse error in POI, so we don't know the file type
            return Collections.emptySet();
        } catch (RuntimeException e) {
            // Another problem in POI
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        xhtml.startDocument();

        final DirectoryNode root;
        TikaInputStream tstream = TikaInputStream.cast(stream);
        if (tstream == null) {
            root = new NPOIFSFileSystem(new CloseShieldInputStream(stream)).getRoot();
        } else {
            final Object container = tstream.getOpenContainer();
            if (container instanceof NPOIFSFileSystem) {
                root = ((NPOIFSFileSystem) container).getRoot();
            } else if (container instanceof DirectoryNode) {
                root = (DirectoryNode) container;
            } else if (tstream.hasFile()) {
                root = new NPOIFSFileSystem(tstream.getFileChannel()).getRoot();
            } else {
                root = new NPOIFSFileSystem(new CloseShieldInputStream(tstream)).getRoot();
            }
        }
        parse(root, context, metadata, xhtml);
        xhtml.endDocument();
    }
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        // Force the document stream to a (possibly temporary) file
        // so we don't modify the current position of the stream
        FileChannel channel = stream.getFileChannel();

        try {
            NPOIFSFileSystem fs = new NPOIFSFileSystem(channel);

            // Optimize a possible later parsing process by keeping
            // a reference to the already opened POI file system
            stream.setOpenContainer(fs);

            return getTopLevelNames(fs.getRoot());
        } catch (IOException e) {
            // Parse error in POI, so we don't know the file type
            return Collections.emptySet();
        } catch (RuntimeException e) {
            // Another problem in POI
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        xhtml.startDocument();

        final DirectoryNode root;
        TikaInputStream tstream = TikaInputStream.cast(stream);
        if (tstream == null) {
            root = new NPOIFSFileSystem(new CloseShieldInputStream(stream)).getRoot();
        } else {
            final Object container = tstream.getOpenContainer();
            if (container instanceof NPOIFSFileSystem) {
                root = ((NPOIFSFileSystem) container).getRoot();
            } else if (container instanceof DirectoryNode) {
                root = (DirectoryNode) container;
            } else {
                NPOIFSFileSystem fs;
                if (tstream.hasFile()) {
                    fs = new NPOIFSFileSystem(tstream.getFile(), true);
                } else {
                    fs = new NPOIFSFileSystem(new CloseShieldInputStream(tstream));
                }
                tstream.setOpenContainer(fs);
                root = fs.getRoot();
            }
        }
        parse(root, context, metadata, xhtml);
        xhtml.endDocument();
    }
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