Examples with ExtractException org.codelibs.fess.crawler.exception.ExtractException used on opensource projects

Example 16 with ExtractException

use of org.codelibs.fess.crawler.exception.ExtractException in project fess-crawler by codelibs.

the class AbstractXmlExtractor method getEncoding.

protected String getEncoding(final BufferedInputStream bis) {
    final byte[] b = new byte[preloadSizeForCharset];
    try {
        bis.mark(preloadSizeForCharset);
        final int c = bis.read(b);
        if (c == -1) {
            return encoding;
        }
        final String head = new String(b, 0, c, encoding);
        if (StringUtil.isBlank(head)) {
            return encoding;
        }
        final Matcher matcher = getEncodingPattern().matcher(head);
        if (matcher.find()) {
            final String enc = matcher.group(1);
            if (Charset.isSupported(enc)) {
                return enc;
            }
        }
    } catch (final Exception e) {
        if (logger.isInfoEnabled()) {
            logger.info("Use a default encoding: " + encoding, e);
        }
    } finally {
        try {
            bis.reset();
        } catch (final IOException e) {
            throw new ExtractException(e);
        }
    }
    return encoding;
}