Example usage for java.nio CharBuffer subSequence

Introduction

In this page you can find the example usage for java.nio CharBuffer subSequence.

Prototype

public abstract CharSequence subSequence(int start, int end);

Source Link

Document

Returns a new char buffer representing a sub-sequence of this buffer's current remaining content.

Usage

From source file:Main.java

public static void main(String[] args) {
    CharBuffer cb1 = CharBuffer.allocate(10);
    cb1.append("java2s.com");
    cb1.rewind();/*from  w  w w . j  a v  a2s. com*/

    System.out.println(Arrays.toString(cb1.array()));

    CharBuffer cb2 = cb1.subSequence(0, 2);

    System.out.println(cb2);

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    ByteBuffer buf = ByteBuffer.allocate(100);

    CharBuffer cbuf = buf.asCharBuffer();

    cbuf.put("a string");

    int start = 2; // start is relative to cbuf's current position
    int end = 5;/*from  www  .j  ava 2  s . co m*/
    CharSequence sub = cbuf.subSequence(start, end); // str

}

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From source file:gephi.spade.panel.fcsFile.java

/**
 * readASCIIData ---/*from   ww w  .  j  ava 2 s.c  o m*/
 * <p>
 * Reads ASCII values in list mode in the DATA segment and updates eventList
 * with the integer values of the values.
 * </p>
 *
 * @param data
 *            <code>ByteBuffer</code> containing the DATA segment of the
 *            underlying file.
 */
private void readASCIIData(ByteBuffer data) {
    /**
     * Calculate the number of characters in each event of the flow file
     */
    // Initialize the number of characters in each event to 0
    int numCharsPerEvent = 0;

    // Loop through all the parameters adding the number of characters in
    // each parameter
    for (int i = 0; i < parameters; i++) {
        numCharsPerEvent += channelBits[i];
    }

    // Allocate the eventList
    eventList = new double[parameters][totalEvents];

    // Convert the byte buffer into a char buffer - doesn't get any easier
    CharBuffer cb = data.asCharBuffer();

    // Initialize the current character to 0
    int currChar = 0;

    for (int i = 0; i < totalEvents; i++) {
        for (int j = 0; j < parameters; j++) {
            try {
                // Store the value into the array
                eventList[j][i] = Integer
                        .parseInt(cb.subSequence(currChar, currChar + channelBits[i]).toString());
            } catch (NumberFormatException nfe) {
                eventList[j][i] = 0;
            }

            // Increment the current character
            currChar += channelBits[i];
        }
    }
}

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From source file:org.nuxeo.ecm.platform.filemanager.service.extension.NoteImporter.java

protected static String guessEncoding(Blob blob) throws IOException {
    // encoding already known?
    if (blob.getEncoding() != null) {
        return null;
    }//from   w w w  .j  a v a 2  s .  c  om

    // bad mime type?
    String mimeType = blob.getMimeType();
    if (mimeType == null) {
        return null;
    }
    if (!mimeType.startsWith("text/") && !mimeType.startsWith("application/xhtml")) {
        // not a text file, we shouldn't be in the Note importer
        return null;
    }

    byte[] bytes = blob.getByteArray();

    List<String> charsets = new ArrayList<>(Arrays.asList("utf-8", "iso-8859-1"));

    String CSEQ = "charset=";
    int i = mimeType.indexOf(CSEQ);
    if (i > 0) {
        // charset specified in MIME type
        String onlyMimeType = mimeType.substring(0, i).replace(";", "").trim();
        blob.setMimeType(onlyMimeType);
        String charset = mimeType.substring(i + CSEQ.length());
        i = charset.indexOf(";");
        if (i > 0) {
            charset = charset.substring(0, i);
        }
        charset = charset.trim().replace("\"", "");
        charsets.add(0, charset);
    } else {
        // charset detected from the actual bytes
        CharsetMatch charsetMatch = new CharsetDetector().setText(bytes).detect();
        if (charsetMatch != null) {
            String charset = charsetMatch.getName();
            charsets.add(0, charset);
        }
    }

    // now convert the string according to the charset, and fallback on others if not possible
    for (String charset : charsets) {
        try {
            Charset cs = Charset.forName(charset);
            CharsetDecoder d = cs.newDecoder().onMalformedInput(CodingErrorAction.REPORT)
                    .onUnmappableCharacter(CodingErrorAction.REPORT);
            CharBuffer cb = d.decode(ByteBuffer.wrap(bytes));
            if (cb.length() != 0 && cb.charAt(0) == '\ufeff') {
                // remove BOM
                cb = cb.subSequence(1, cb.length());
            }
            return cb.toString();
        } catch (IllegalArgumentException e) {
            // illegal charset
        } catch (CharacterCodingException e) {
            // could not decode
        }
    }
    // nothing worked, use platform
    return null;
}

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From source file:org.wings.session.SmartURLsFilter.java

private static void encode(ByteArrayOutputStream bytes, ServletOutputStream out) throws IOException {
    String regex = "(href|src|action) *= *\"([^\"]*)\"";

    SmartURLsFilter smartURLsFilter = new SmartURLsFilter();
    String replacement = smartURLsFilter.parameterSeparator + "$2" + smartURLsFilter.nameValueSeparator + "$4";

    smartURLsFilter.encodePattern = Pattern
            .compile("(" + "\\?|&" + ")([a-zA-Z0-9%+.-[*]_]*)" + "(" + "=" + ")([a-zA-Z0-9%+.-[*]_=/]*)");

    CharBuffer chars = CharBuffer.wrap(bytes.toString());
    Pattern pattern = Pattern.compile(regex);
    Matcher matcher = pattern.matcher(chars);
    int pos = 0;/*from w w  w.  j  a  va 2 s .  c  om*/
    while (matcher.find()) {
        out.print(chars.subSequence(pos, matcher.start()).toString());
        pos = matcher.end();
        Matcher matcher2 = smartURLsFilter.encodePattern.matcher(matcher.group(2));
        String group2 = matcher2.replaceAll(replacement);

        out.print(matcher.group(1) + "=\"" + group2 + "\"");
    }
    out.print(chars.subSequence(pos, bytes.size()).toString());
}

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