Example usage for java.io InputStream read

Introduction

In this page you can find the example usage for java.io InputStream read.

Prototype

public abstract int read() throws IOException;

Source Link

Document

Reads the next byte of data from the input stream.

Usage

From source file:Main.java

/**
 * Copy./*from  ww  w  . jav  a  2  s. c om*/
 *
 * @param in the in
 * @param out the out
 * @throws IOException Signals that an I/O exception has occurred.
 */
private static void copy(InputStream in, BufferedOutputStream out) throws IOException {
    int byte_;
    while ((byte_ = in.read()) != -1)
        out.write(byte_);
}

From source file:Main.java

public static void skipAll(InputStream in) throws IOException {
    do {//  w w w.  jav  a  2 s.co m
        in.skip(Long.MAX_VALUE);
    } while (in.read() != -1);
}

From source file:Main.java

public static String readLine(InputStream in) throws IOException {
    StringBuilder result = new StringBuilder();
    for (int c; (c = in.read()) != -1 && c != '\n';) {
        if (c != '\r') {
            result.append((char) c);
        }/* w w w . ja v  a2  s . c  o  m*/
    }
    return result.toString();
}

From source file:MainClass.java

public static long getCRC32(InputStream in) throws IOException {

    Checksum cs = new CRC32();

    // more efficient to read chunks of data at a time
    for (int b = in.read(); b != -1; b = in.read()) {
        cs.update(b);//  www  . j av a2s.  c om
    }
    return cs.getValue();
}

From source file:Main.java

public static long readEncodedLength(InputStream input, int[] bytesReadOut) {
    try {/*w ww . ja  v  a  2s. c  om*/
        int lbyte = input.read();
        if (lbyte == -1)
            return -1;
        if (lbyte == 0)
            throw new IllegalStateException("First length byte is 0");
        // there will always be 24 extra leading zeros from the first 3 bytes
        int nbytes = 1 + Integer.numberOfLeadingZeros(lbyte) - 24;

        // start with the first byte with the leading 1 masked out
        long value = lbyte ^ Integer.highestOneBit(lbyte);
        // read successive bytes, shifting current value each time (big-endian, most significant bytes first)
        for (int i = 1; i < nbytes; i++) {
            lbyte = input.read();
            if (lbyte == -1)
                return -1;
            value = (value << 8) | lbyte;
        }
        if (bytesReadOut != null)
            bytesReadOut[0] = nbytes;
        return value;
    } catch (IOException ex) {
        throw new IllegalStateException(ex);
    }
}

From source file:Main.java

public static final String readLine(InputStream in, String charset) throws IOException {
    int rd = in.read();
    if (rd == -1)
        return null;
    byte r = (byte) rd;
    int i = 0;//ww w  . j  a va 2 s  .  c  o  m
    int l = 50;
    byte[] buf = new byte[l];
    while (r != '\n') {
        if (i >= l - 1) {
            l += 50;
            byte[] old = buf;
            buf = new byte[l];
            System.arraycopy(old, 0, buf, 0, old.length);
        }
        if (r != '\r')
            buf[i++] = r;
        rd = in.read();
        if (rd == -1)
            break;
        r = (byte) rd;
    }
    if (charset == null) {
        return new String(buf, 0, i);
    }
    return new String(buf, 0, i, charset);
}

From source file:Main.java

public static String convertStreamToString(InputStream is) throws IOException {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    int i = is.read();
    while (i != -1) {
        baos.write(i);/*from  www .ja v  a 2s.  c om*/
        i = is.read();
    }
    return baos.toString();
}

From source file:Main.java

public static void whois(String query, String server) throws IOException {
    Socket sock = new Socket(server, 43);
    int c = 0;/* w  w  w.j  av  a 2s.c  om*/

    OutputStream os = sock.getOutputStream();
    InputStream is = sock.getInputStream();
    query += "\r\n";
    os.write(query.getBytes("iso8859_1"));

    while (c != -1) {
        c = is.read();
        if (c != -1)
            System.out.println((char) c);
    }
}

From source file:Main.java

private static String getAaptResult(String sdkPath, String apkPath, final Pattern pattern) {
    try {//from  w ww  .  j a v a2s.c o  m
        final File apkFile = new File(apkPath);
        final ByteArrayOutputStream aaptOutput = new ByteArrayOutputStream();
        final String command = getAaptDumpBadgingCommand(sdkPath, apkFile.getName());

        Process process = Runtime.getRuntime().exec(command, null, apkFile.getParentFile());

        InputStream inputStream = process.getInputStream();
        for (int last = inputStream.read(); last != -1; last = inputStream.read()) {
            aaptOutput.write(last);
        }

        String packageId = "";
        final String aaptResult = aaptOutput.toString();
        if (aaptResult.length() > 0) {
            final Matcher matcher = pattern.matcher(aaptResult);
            if (matcher.find()) {
                packageId = matcher.group(1);
            }
        }
        return packageId;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

From source file:Main.java

public static String readStream(InputStream is) {
    try {//  w  w w .j  a v a2 s .  com
        ByteArrayOutputStream bo = new ByteArrayOutputStream();
        int i = is.read();
        while (i != -1) {
            bo.write(i);
            i = is.read();
        }
        return bo.toString();
    } catch (IOException e) {
        return "";
    }
}