Examples with FileOpException digilib.io.FileOpException used on opensource projects

Example 11 with FileOpException

use of digilib.io.FileOpException in project digilib by robcast.

the class JAIDocuImage method identify.

/* Check image size and type and store in ImageFile f */
public ImageInput identify(ImageInput input) throws IOException {
    this.input = input;
    // try parent method first
    ImageInput imf = super.identify(input);
    if (imf != null) {
        return imf;
    }
    /*
		 * try JAI
		 */
    logger.debug("identifying (JAI) " + input);
    try {
        RenderedOp img = null;
        if (input.hasFile()) {
            String t = FileOps.mimeForFile(input.getFile());
            input.setMimetype(t);
            img = JAI.create("fileload", input.getFile().getAbsolutePath());
        } else if (input.hasInputStream()) {
            img = JAI.create("stream", input.getInputStream());
        // FIXME: where do we get the mimetype?
        } else {
            throw new FileOpException("unable to get data for image!");
        }
        ImageSize d = new ImageSize(img.getWidth(), img.getHeight());
        input.setSize(d);
        logger.debug("image size: " + d);
        return input;
    } catch (Exception e) {
        throw new FileOpException("ERROR: unable to identify image!");
    }
}

Example 12 with FileOpException

use of digilib.io.FileOpException in project digilib by robcast.

the class JAIImageLoaderDocuImage method getReader.

/* Get an ImageReader for the image file. */
public ImageReader getReader(ImageInput input) throws IOException {
    logger.debug("get ImageReader for " + input);
    if (this.reader != null) {
        if (this.input == input) {
            // it was the same input
            logger.debug("reusing Reader");
            return reader;
        }
        // clean up old reader
        logger.debug("cleaning Reader!");
        dispose();
    }
    this.input = input;
    ImageInputStream istream = null;
    if (input.hasImageInputStream()) {
        // stream input
        istream = input.getImageInputStream();
    } else if (input.hasFile()) {
        // file only input
        RandomAccessFile rf = new RandomAccessFile(input.getFile(), "r");
        istream = new FileImageInputStream(rf);
    } else {
        throw new FileOpException("Unable to get data from ImageInput");
    }
    Iterator<ImageReader> readers;
    String mt = input.getMimetype();
    if (mt == null) {
        logger.debug("No mime-type. Trying automagic.");
        readers = ImageIO.getImageReaders(istream);
    } else {
        logger.debug("File type:" + mt);
        readers = ImageIO.getImageReadersByMIMEType(mt);
    }
    if (!readers.hasNext()) {
        throw new FileOpException("Can't find Reader to load File!");
    }
    reader = readers.next();
    logger.debug("ImageIO: this reader: " + reader.getClass());
    /* are there more readers? */
    /* while (readers.hasNext()) {
            logger.debug("ImageIO: next reader: " + readers.next().getClass());
        } */
    reader.setInput(istream);
    return reader;
}

Example 13 with FileOpException

use of digilib.io.FileOpException in project digilib by robcast.

the class JAIImageLoaderDocuImage method loadSubimage.

/* Load an image file into the Object. */
public void loadSubimage(ImageInput ii, Rectangle region, int prescale) throws FileOpException {
    logger.debug("loadSubimage: " + ii.getFile());
    // System.gc();
    try {
        if ((reader == null) || (imgFile != ii.getFile())) {
            getReader(ii);
        }
        ImageReadParam readParam = reader.getDefaultReadParam();
        readParam.setSourceRegion(region);
        readParam.setSourceSubsampling(prescale, prescale, 0, 0);
        img = reader.read(0, readParam);
    /* JAI imageread seems to ignore the readParam :-(
			ImageInputStream istream = (ImageInputStream) reader.getInput();
			ParameterBlockJAI pb = new ParameterBlockJAI("imageread");
			pb.setParameter("Input", istream);
			pb.setParameter("ReadParam", readParam);
			pb.setParameter("Reader", reader);
			img = JAI.create("imageread", pb);
			*/
    } catch (IOException e) {
        throw new FileOpException("Unable to load File!");
    }
    if (img == null) {
        throw new FileOpException("Unable to load File!");
    }
    imgFile = ii.getFile();
}

Example 14 with FileOpException

use of digilib.io.FileOpException in project digilib by robcast.

the class PDFTitlePage method getInfoXmlReader.

/**
 * @param pdfji
 * @return
 */
protected DigilibInfoReader getInfoXmlReader(PDFRequest pdfji) {
    try {
        // try to load ../presentation/info.xml
        File imgDir = pdfji.getImageJobInformation().getFileDirectory().getDir();
        File docDir = imgDir.getParentFile();
        File infoFn = new File(new File(docDir, "presentation"), "info.xml");
        return new DigilibInfoReader(infoFn.getAbsolutePath());
    } catch (FileOpException e) {
        logger.warn("info.xml not found");
    } catch (IOException e) {
        logger.warn("image directory for info.xml not found");
    } catch (ImageOpException e) {
        logger.warn("problem with parameters for info.xml");
    }
    return null;
}

Example 15 with FileOpException

use of digilib.io.FileOpException in project digilib by robcast.

the class MetaAccessAuthzOps method rolesForPath.

/**
 * Return authorization roles needed for request.
 *
 * Returns the list of authorization roles that are needed to access the
 * specified path. No list means the path is free.
 *
 * The location information of the request is also considered.
 *
 * @param request
 *            ServletRequest with address information.
 * @throws AuthOpException
 *             Exception thrown on error.
 * @return List of Strings with role names.
 */
@Override
public List<String> rolesForPath(DigilibServletRequest dlRequest) throws AuthOpException {
    DocuDirent imgs;
    try {
        // try to get image file from JobDescription
        ImageJobDescription ticket = dlRequest.getJobDescription();
        if (ticket != null) {
            imgs = (DocuDirent) ticket.getImageSet();
        } else {
            // try to get image file from DirCache
            DigilibConfiguration config = dlRequest.getDigilibConfig();
            DocuDirCache cache = (DocuDirCache) config.getValue(DigilibServletConfiguration.DIR_CACHE_KEY);
            imgs = cache.getFile(dlRequest.getFilePath(), dlRequest.getAsInt("pn"));
        }
    } catch (FileOpException e) {
        throw new AuthOpException("No file for auth check!");
    }
    /*
         * get access restrictions from metadata
         */
    String access = null;
    try {
        imgs.checkMeta();
        MetadataMap meta = imgs.getMeta().getFileMeta();
        if (meta != null) {
            access = meta.get("access");
        }
    } catch (Exception e) {
        logger.error("Error getting access meta for file!");
    }
    if (access == null) {
        // no access tag - use default
        logger.debug("Roles required for " + imgs.getName() + ": " + defaultRoles + "(default)");
        return defaultRoles;
    } else if (access.equalsIgnoreCase("free")) {
        // access free
        logger.debug("Roles required for " + imgs.getName() + ": (free)");
        return null;
    }
    // get required roles
    if (rolesMap.containsKey(access)) {
        List<String> required = rolesMap.get(access);
        logger.debug("Roles required for " + imgs.getName() + ": " + required);
        return required;
    } else {
        // no mapping to role
        logger.error("Error: no role for access type '" + access + "'");
        // use default
        logger.debug("Roles required for " + imgs.getName() + ": " + defaultRoles + "(substituted default)");
        return defaultRoles;
    }
}