Java Code Examples for org.jsoup.nodes.Document#childNodeSize()

The following examples show how to use org.jsoup.nodes.Document#childNodeSize() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: astor   File: DataUtil.java    License: GNU General Public License v2.0 4 votes vote down vote up
static Document parseInputStream(InputStream input, String charsetName, String baseUri, Parser parser) throws IOException  {
    if (input == null) // empty body
        return new Document(baseUri);

    if (!(input instanceof ConstrainableInputStream))
        input = new ConstrainableInputStream(input, bufferSize, 0);

    Document doc = null;
    boolean fullyRead = false;

    // read the start of the stream and look for a BOM or meta charset
    input.mark(firstReadBufferSize);
    ByteBuffer firstBytes = readToByteBuffer(input, firstReadBufferSize - 1); // -1 because we read one more to see if completed
    fullyRead = input.read() == -1;
    input.reset();

    // look for BOM - overrides any other header or input
    BomCharset bomCharset = detectCharsetFromBom(firstBytes, charsetName);
    if (bomCharset != null) {
        charsetName = bomCharset.charset;
        input.skip(bomCharset.offset);
    }

    if (charsetName == null) { // determine from meta. safe first parse as UTF-8
        String docData = Charset.forName(defaultCharset).decode(firstBytes).toString();
        doc = parser.parseInput(docData, baseUri);

        // look for <meta http-equiv="Content-Type" content="text/html;charset=gb2312"> or HTML5 <meta charset="gb2312">
        Elements metaElements = doc.select("meta[http-equiv=content-type], meta[charset]");
        String foundCharset = null; // if not found, will keep utf-8 as best attempt
        for (Element meta : metaElements) {
            if (meta.hasAttr("http-equiv"))
                foundCharset = getCharsetFromContentType(meta.attr("content"));
            if (foundCharset == null && meta.hasAttr("charset"))
                foundCharset = meta.attr("charset");
            if (foundCharset != null)
                break;
        }

        // look for <?xml encoding='ISO-8859-1'?>
        if (foundCharset == null && doc.childNodeSize() > 0 && doc.childNode(0) instanceof XmlDeclaration) {
            XmlDeclaration prolog = (XmlDeclaration) doc.childNode(0);
            if (prolog.name().equals("xml"))
                foundCharset = prolog.attr("encoding");
        }
        foundCharset = validateCharset(foundCharset);
        if (foundCharset != null && !foundCharset.equalsIgnoreCase(defaultCharset)) { // need to re-decode. (case insensitive check here to match how validate works)
            foundCharset = foundCharset.trim().replaceAll("[\"']", "");
            charsetName = foundCharset;
            doc = null;
        } else if (!fullyRead) {
            doc = null;
        }
    } else { // specified by content type header (or by user on file load)
        Validate.notEmpty(charsetName, "Must set charset arg to character set of file to parse. Set to null to attempt to detect from HTML");
    }
    if (doc == null) {
        if (charsetName == null)
            charsetName = defaultCharset;
        BufferedReader reader = new BufferedReader(new InputStreamReader(input, charsetName), bufferSize);
        doc = parser.parseInput(reader, baseUri);
        doc.outputSettings().charset(charsetName);
    }
    input.close();
    return doc;
}
 
Example 2
Source Project: astor   File: DataUtil.java    License: GNU General Public License v2.0 4 votes vote down vote up
static Document parseInputStream(InputStream input, String charsetName, String baseUri, Parser parser) throws IOException  {
    if (input == null) // empty body
        return new Document(baseUri);

    if (!(input instanceof ConstrainableInputStream))
        input = new ConstrainableInputStream(input, bufferSize, 0);

    Document doc = null;
    boolean fullyRead = false;

    // read the start of the stream and look for a BOM or meta charset
    input.mark(firstReadBufferSize);
    ByteBuffer firstBytes = readToByteBuffer(input, firstReadBufferSize - 1); // -1 because we read one more to see if completed
    fullyRead = input.read() == -1;
    input.reset();

    // look for BOM - overrides any other header or input
    BomCharset bomCharset = detectCharsetFromBom(firstBytes, charsetName);
    if (bomCharset != null) {
        charsetName = bomCharset.charset;
        input.skip(bomCharset.offset);
    }

    if (charsetName == null) { // determine from meta. safe first parse as UTF-8
        String docData = Charset.forName(defaultCharset).decode(firstBytes).toString();
        doc = parser.parseInput(docData, baseUri);

        // look for <meta http-equiv="Content-Type" content="text/html;charset=gb2312"> or HTML5 <meta charset="gb2312">
        Elements metaElements = doc.select("meta[http-equiv=content-type], meta[charset]");
        String foundCharset = null; // if not found, will keep utf-8 as best attempt
        for (Element meta : metaElements) {
            if (meta.hasAttr("http-equiv"))
                foundCharset = getCharsetFromContentType(meta.attr("content"));
            if (foundCharset == null && meta.hasAttr("charset"))
                foundCharset = meta.attr("charset");
            if (foundCharset != null)
                break;
        }

        // look for <?xml encoding='ISO-8859-1'?>
        if (foundCharset == null && doc.childNodeSize() > 0 && doc.childNode(0) instanceof XmlDeclaration) {
            XmlDeclaration prolog = (XmlDeclaration) doc.childNode(0);
            if (prolog.name().equals("xml"))
                foundCharset = prolog.attr("encoding");
        }
        foundCharset = validateCharset(foundCharset);
        if (foundCharset != null && !foundCharset.equalsIgnoreCase(defaultCharset)) { // need to re-decode. (case insensitive check here to match how validate works)
            foundCharset = foundCharset.trim().replaceAll("[\"']", "");
            charsetName = foundCharset;
            doc = null;
        } else if (!fullyRead) {
            doc = null;
        }
    } else { // specified by content type header (or by user on file load)
        Validate.notEmpty(charsetName, "Must set charset arg to character set of file to parse. Set to null to attempt to detect from HTML");
    }
    if (doc == null) {
        if (charsetName == null)
            charsetName = defaultCharset;
        BufferedReader reader = new BufferedReader(new InputStreamReader(input, charsetName), bufferSize);
        doc = parser.parseInput(reader, baseUri);
        doc.outputSettings().charset(charsetName);
    }
    input.close();
    return doc;
}