Examples with UnzipEngine net.lingala.zip4j.unzip.UnzipEngine used on opensource projects

Example 1 with UnzipEngine

use of net.lingala.zip4j.unzip.UnzipEngine in project v7files by thiloplanz.

the class ZipFile method index.

/**
 * index all individual files found in a zip archive already in storage
 *
 * @throws IOException
 */
public static final void index(ContentStorage storage, ContentPointer zipFile) throws IOException {
    Content zip = storage.getContent(zipFile);
    if (zip == null)
        throw new IllegalArgumentException("invalid ContentPointer " + zipFile);
    File tmp = File.createTempFile("v7files_zipfile_extractfile_", ".zip");
    try {
        OutputStream f = new FileOutputStream(tmp);
        IOUtils.copy(zip.getInputStream(), f);
        f.close();
        // open up the zip file
        HeaderReader r = new HeaderReader(new RandomAccessFile(tmp, "r"));
        ZipModel model = r.readAllHeaders();
        model.setZipFile(tmp.getAbsolutePath());
        Map<String, Object> map = zipFile.serialize();
        List<?> fhs = model.getCentralDirectory().getFileHeaders();
        for (Object _fh : fhs) {
            FileHeader fh = (FileHeader) _fh;
            UnzipEngine en = new UnzipEngine(model, fh);
            // this will read the local file header
            en.getInputStream();
            LocalFileHeader lh = en.getLocalFileHeader();
            store(storage, map, fh, lh);
        }
    } catch (ZipException e) {
        throw new IllegalArgumentException("ContentPointer does not refer to a zip file: " + zipFile, e);
    } finally {
        tmp.delete();
    }
}

Example 2 with UnzipEngine

use of net.lingala.zip4j.unzip.UnzipEngine in project v7files by thiloplanz.

the class ZipFile method extractFile.

/**
 * find the data indicated by the ContentPointer, treats it as a zip
 * archive, extracts the named file inside the archive, stores a reference
 * to it in the ContentStorage and returns a ContentPointer to it.
 *
 * @throws FileNotFoundException
 *             if the archive exists, but does not contain the named file
 * @throws IllegalArgumentException
 *             if the ContentPointer does not refer to a zip archive
 */
public static final ContentPointer extractFile(ContentStorage storage, ContentPointer zipFile, String fileName) throws IOException {
    Content zip = storage.getContent(zipFile);
    if (zip == null)
        throw new IllegalArgumentException("invalid ContentPointer " + zipFile);
    File tmp = File.createTempFile("v7files_zipfile_extractfile_", ".zip");
    try {
        OutputStream f = new FileOutputStream(tmp);
        IOUtils.copy(zip.getInputStream(), f);
        f.close();
        // open up the zip file
        HeaderReader r = new HeaderReader(new RandomAccessFile(tmp, "r"));
        ZipModel model = r.readAllHeaders();
        model.setZipFile(tmp.getAbsolutePath());
        List<?> fhs = model.getCentralDirectory().getFileHeaders();
        for (Object _fh : fhs) {
            FileHeader fh = (FileHeader) _fh;
            if (fileName.equals(fh.getFileName())) {
                UnzipEngine en = new UnzipEngine(model, fh);
                // this will read the local file header
                en.getInputStream();
                LocalFileHeader lh = en.getLocalFileHeader();
                return store(storage, zipFile.serialize(), fh, lh);
            }
        }
    } catch (ZipException e) {
        throw new IllegalArgumentException("ContentPointer does not refer to a zip file: " + zipFile, e);
    } finally {
        tmp.delete();
    }
    throw new FileNotFoundException("ContentPointer does not contain " + fileName + ": " + zipFile);
}