Examples of java.nio.CharBuffer

java.nio.CharBuffer
A buffer of chars.
A char buffer can be created in either of the following ways:
- {@link #allocate(int) Allocate} a new char array and create a bufferbased on it;
- {@link #wrap(char[]) Wrap} an existing char array to create a newbuffer;
- {@link #wrap(CharSequence) Wrap} an existing char sequence to create anew buffer;
- Use {@link java.nio.ByteBuffer#asCharBuffer() ByteBuffer.asCharBuffer}to create a char buffer based on a byte buffer.


                        // It's in the range, so process the file
                        RandomAccessFile raf = new RandomAccessFile(logFiles[i], "r");
                        FileChannel fc = raf.getChannel();
                        MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
                        CharBuffer cb = Charset.forName("US-ASCII").decode(bb); //todo: does Tomcat use a different charset on a foreign PC?
                        Matcher lines = FULL_LINE_PATTERN.matcher(cb);
                        Matcher target = ACCESS_LOG_PATTERN.matcher("");
                        SimpleDateFormat format = (start == 0 && end == 0) ? null : new SimpleDateFormat(ACCESS_LOG_DATE_FORMAT);
                        int max = maxResults == null ? MAX_SEARCH_RESULTS : Math.min(maxResults.intValue(), MAX_SEARCH_RESULTS);


                        while(lines.find()) {
                            ++lineCount;
                            ++fileLineCount;
                            if(capped) {
                                continue;
                            }
                            CharSequence line = cb.subSequence(lines.start(), lines.end());
                            target.reset(line);
                            if(target.find()) {
                                if(host != null && !host.equals(target.group(GROUP_HOST))) {
                                    continue;
                                }

View Full Code Here

        int lineCount = 0;
        try {
            RandomAccessFile raf = new RandomAccessFile(file, "r");
            FileChannel fc = raf.getChannel();
            MappedByteBuffer bb = fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size());
            CharBuffer cb = Charset.forName("US-ASCII").decode(bb); //todo: does Log4J use a different charset on a foreign PC?
            Matcher target = null;
            Matcher any = null;
            Matcher lines = FULL_LINE_PATTERN.matcher(cb);
            Matcher text = textSearch == null ? null : textSearch.matcher("");
            boolean hit = false;
            max = Math.min(max, MAX_SEARCH_RESULTS);
            while(lines.find()) {
                ++lineCount;
                if(target == null) {
                    if(DEFAULT_ANY_START.matcher(cb.subSequence(lines.start(), lines.end())).find()) {
                        target = getDefaultPatternForLevel(targetLevel).matcher("");
                        any = DEFAULT_ANY_START.matcher("");
                    } else {
                        target = getUnknownPatternForLevel(targetLevel).matcher("");
                        any = UNKNOWN_ANY_START.matcher("");
                    }
                }
                if(start != null && start.intValue() > lineCount) {
                    continue;
                }
                if(stop != null && stop.intValue() < lineCount) {
                    continue;
                }
                CharSequence line = cb.subSequence(lines.start(), lines.end());
                target.reset(line);
                if(target.find()) {
                    if(text != null) {
                        text.reset(line);
                        if(!text.find()) {

View Full Code Here


        limit(end);
        decoder.reset();


        int expectedLength = (int) (remaining() * decoder.averageCharsPerByte()) + 1;
        CharBuffer out = CharBuffer.allocate(expectedLength);
        for (;;) {
            CoderResult cr;
            if (hasRemaining()) {
                cr = decoder.decode(buf(), out, true);
            } else {
                cr = decoder.flush(out);
            }


            if (cr.isUnderflow()) {
                break;
            }


            if (cr.isOverflow()) {
                CharBuffer o = CharBuffer.allocate(out.capacity()
                        + expectedLength);
                out.flip();
                o.put(out);
                out = o;
                continue;
            }


            if (cr.isError()) {

View Full Code Here

            return "";
        }
        decoder.reset();


        int expectedLength = (int) (remaining() * decoder.averageCharsPerByte()) + 1;
        CharBuffer out = CharBuffer.allocate(expectedLength);
        for (;;) {
            CoderResult cr;
            if (hasRemaining()) {
                cr = decoder.decode(buf(), out, true);
            } else {
                cr = decoder.flush(out);
            }


            if (cr.isUnderflow()) {
                break;
            }


            if (cr.isOverflow()) {
                CharBuffer o = CharBuffer.allocate(out.capacity()
                        + expectedLength);
                out.flip();
                o.put(out);
                out = o;
                continue;
            }


            if (cr.isError()) {

View Full Code Here

            throws CharacterCodingException {
        if (val.length() == 0) {
            return this;
        }


        CharBuffer in = CharBuffer.wrap(val);
        encoder.reset();


        int expandedState = 0;


        for (;;) {
            CoderResult cr;
            if (in.hasRemaining()) {
                cr = encoder.encode(in, buf(), true);
            } else {
                cr = encoder.flush(buf());
            }


            if (cr.isUnderflow()) {
                break;
            }
            if (cr.isOverflow()) {
                if (isAutoExpand()) {
                    switch (expandedState) {
                    case 0:
                        autoExpand((int) Math.ceil(in.remaining()
                                * encoder.averageBytesPerChar()));
                        expandedState++;
                        break;
                    case 1:
                        autoExpand((int) Math.ceil(in.remaining()
                                * encoder.maxBytesPerChar()));
                        expandedState++;
                        break;
                    default:
                        throw new RuntimeException("Expanded by "
                                + (int) Math.ceil(in.remaining()
                                        * encoder.maxBytesPerChar())
                                + " but that wasn't enough for '" + val + "'");
                    }
                    continue;
                }

View Full Code Here

            }
            position(end);
            return this;
        }


        CharBuffer in = CharBuffer.wrap(val);
        limit(end);
        encoder.reset();


        for (;;) {
            CoderResult cr;
            if (in.hasRemaining()) {
                cr = encoder.encode(in, buf(), true);
            } else {
                cr = encoder.flush(buf());
            }

View Full Code Here


        limit(end);
        decoder.reset();


        int expectedLength = (int) (remaining() * decoder.averageCharsPerByte()) + 1;
        CharBuffer out = CharBuffer.allocate(expectedLength);
        for (;;) {
            CoderResult cr;
            if (hasRemaining()) {
                cr = decoder.decode(buf(), out, true);
            } else {
                cr = decoder.flush(out);
            }


            if (cr.isUnderflow()) {
                break;
            }


            if (cr.isOverflow()) {
                CharBuffer o = CharBuffer.allocate(out.capacity()
                        + expectedLength);
                out.flip();
                o.put(out);
                out = o;
                continue;
            }


            cr.throwException();

View Full Code Here

            break;
        default:
            throw new IllegalArgumentException("padding: " + padding);
        }


        CharBuffer in = CharBuffer.wrap(val);
        skip(prefixLength); // make a room for the length field
        int oldPos = position();
        encoder.reset();


        int expandedState = 0;


        for (;;) {
            CoderResult cr;
            if (in.hasRemaining()) {
                cr = encoder.encode(in, buf(), true);
            } else {
                cr = encoder.flush(buf());
            }


            if (position() - oldPos > maxLength) {
                throw new IllegalArgumentException(
                        "The specified string is too long.");
            }


            if (cr.isUnderflow()) {
                break;
            }
            if (cr.isOverflow()) {
                if (isAutoExpand()) {
                    switch (expandedState) {
                    case 0:
                        autoExpand((int) Math.ceil(in.remaining()
                                * encoder.averageBytesPerChar()));
                        expandedState++;
                        break;
                    case 1:
                        autoExpand((int) Math.ceil(in.remaining()
                                * encoder.maxBytesPerChar()));
                        expandedState++;
                        break;
                    default:
                        throw new RuntimeException("Expanded by "
                                + (int) Math.ceil(in.remaining()
                                        * encoder.maxBytesPerChar())
                                + " but that wasn't enough for '" + val + "'");
                    }
                    continue;
                }

View Full Code Here

        final CharBuffer cb = CharBuffer.wrap(s, off, off + len);
        write(cb);
    }


    public void write(final String s) {
        final CharBuffer cb = CharBuffer.wrap(s);
        write(cb);
    }

View Full Code Here

        final CharBuffer cb = CharBuffer.wrap(s);
        write(cb);
    }


    public void print(final boolean b) {
        final CharBuffer cb = CharBuffer.wrap(Boolean.toString(b));
        write(cb);
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.nio.CharBuffer

ae.sun.awt.datatransfer.DataTransferer

Basic

com.alibaba.fastjson.JSON

com.alibaba.json.bvt.parser.TestUTF8_3

com.alibaba.json.bvt.parser.TestUTF8_4

com.asakusafw.runtime.io.csv.CsvParser

com.atilika.kuromoji.trie.DoubleArrayTrie

com.badlogic.gdx.utils.BufferUtils

com.cloudera.sqoop.io.TestLobFile

com.facebook.presto.jdbc.internal.netty.buffer.ChannelBuffers

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.