Examples with LimitedContentWriter org.olat.core.util.io.LimitedContentWriter used on opensource projects

Example 1 with LimitedContentWriter

use of org.olat.core.util.io.LimitedContentWriter in project OpenOLAT by OpenOLAT.

the class PowerPointDocument method readContent.

@Override
public FileContent readContent(VFSLeaf leaf) throws IOException, DocumentException {
    if (log.isDebug())
        log.debug("read PPT Content of leaf=" + leaf.getName());
    try (BufferedInputStream bis = new BufferedInputStream(leaf.getInputStream())) {
        LimitedContentWriter oStream = new LimitedContentWriter(100000, FileDocumentFactory.getMaxFileSize());
        extractText(bis, oStream);
        return new FileContent(oStream.toString());
    } catch (Exception e) {
        throw new DocumentException("Can not read PPT Content. File=" + leaf.getName(), e);
    }
}

Example 2 with LimitedContentWriter

use of org.olat.core.util.io.LimitedContentWriter in project OpenOLAT by OpenOLAT.

the class TextDocument method readContent.

@Override
protected FileContent readContent(VFSLeaf leaf) throws IOException {
    InputStreamReader in = new InputStreamReader(leaf.getInputStream());
    LimitedContentWriter out = new LimitedContentWriter((int) leaf.getSize(), FileDocumentFactory.getMaxFileSize());
    try {
        copy(in, out);
    } catch (Exception e) {
        log.error("", e);
    }
    return new FileContent(out.toString());
}

Example 3 with LimitedContentWriter

use of org.olat.core.util.io.LimitedContentWriter in project OpenOLAT by OpenOLAT.

the class WordDocument method readContent.

@Override
protected FileContent readContent(VFSLeaf leaf) throws IOException, DocumentException {
    LimitedContentWriter sb = new LimitedContentWriter((int) leaf.getSize(), FileDocumentFactory.getMaxFileSize());
    try (InputStream bis = new BufferedInputStream(leaf.getInputStream())) {
        POIFSFileSystem filesystem = new POIFSFileSystem(bis);
        Iterator<?> entries = filesystem.getRoot().getEntries();
        while (entries.hasNext()) {
            Entry entry = (Entry) entries.next();
            String name = entry.getName();
            if (!(entry instanceof DocumentEntry)) {
            // Skip directory entries
            } else if ("WordDocument".equals(name)) {
                collectWordDocument(leaf, filesystem, sb);
            }
        }
        return new FileContent(sb.toString());
    } catch (Exception e) {
        log.warn("could not read in word document: " + leaf + " please check, that this is not an docx/rtf/html file!");
        throw new DocumentException(e.getMessage());
    }
}

Example 4 with LimitedContentWriter

use of org.olat.core.util.io.LimitedContentWriter in project OpenOLAT by OpenOLAT.

the class ExcelOOXMLDocument method parseSheets.

private String parseSheets(Map<String, String> sharedStrings, VFSLeaf leaf) throws IOException, DocumentException {
    try (InputStream stream = leaf.getInputStream();
        ZipInputStream zip = new ZipInputStream(stream)) {
        ZipEntry entry = zip.getNextEntry();
        LimitedContentWriter writer = new LimitedContentWriter(100000, FileDocumentFactory.getMaxFileSize());
        while (entry != null) {
            if (writer.accept()) {
                String name = entry.getName();
                if (name.startsWith(SHEET) && name.endsWith(".xml")) {
                    OfficeDocumentHandler dh = new OfficeDocumentHandler(writer, sharedStrings);
                    parse(new ShieldInputStream(zip), dh);
                }
            }
            entry = zip.getNextEntry();
        }
        return writer.toString();
    } catch (DocumentException e) {
        throw e;
    } catch (Exception e) {
        throw new DocumentException(e.getMessage());
    }
}

Example 5 with LimitedContentWriter

use of org.olat.core.util.io.LimitedContentWriter in project OpenOLAT by OpenOLAT.

the class PdfDocument method getPdfTextFromBuffer.

private FileContent getPdfTextFromBuffer(File pdfTextFile) throws IOException {
    if (log.isDebug())
        log.debug("readContent from text file start...");
    try (BufferedReader br = new BufferedReader(new FileReader(pdfTextFile));
        LimitedContentWriter sb = new LimitedContentWriter(5000, FileDocumentFactory.getMaxFileSize())) {
        // search the title
        char[] cbuf = new char[4096];
        int length = br.read(cbuf);
        int indexSep = 0;
        String title = "";
        if (length > 0) {
            String firstChunk = new String(cbuf, 0, length);
            indexSep = firstChunk.indexOf("\u00A0|\u00A0");
            if (indexSep > 0) {
                title = firstChunk.substring(0, indexSep);
                sb.append(firstChunk.substring(indexSep + 3));
            } else {
                sb.append(firstChunk);
            }
            while ((length = br.read(cbuf)) > 0) {
                sb.write(cbuf, 0, length);
            }
        }
        return new FileContent(title, sb.toString());
    } catch (IOException e) {
        throw e;
    }
}