Example usage for java.lang Character digit

Introduction

In this page you can find the example usage for java.lang Character digit.

Prototype

public static int digit(int codePoint, int radix) 

Source Link

Document

Returns the numeric value of the specified character (Unicode code point) in the specified radix.

Usage

From source file:StringUtils.java

public static byte[] hex2byte(String sinput) {
    int length = sinput.length();

    if ((length & 0x01) != 0) {
        throw new IllegalArgumentException("odd number of characters.");
    }/*from  w w w.  ja v a  2 s . c om*/

    byte[] out = new byte[length >> 1];

    // two characters form the hex value.
    for (int i = 0, j = 0; j < length; i++) {
        int f = Character.digit(sinput.charAt(j++), 16) << 4;
        f = f | Character.digit(sinput.charAt(j++), 16);
        out[i] = (byte) (f & 0xFF);
    }

    return out;
}

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From source file:Main.java

public static byte[] hexStringToByteArray(String s) {
    if (s.length() % 2 != 0) {
        StringBuilder stringBuilder = new StringBuilder(s);
        stringBuilder.insert(s.length() - 1, "0");
        s = stringBuilder.toString();//w w  w .j  a  v a2 s . c o  m
    }

    int len = s.length();
    byte[] data = new byte[len / 2];
    for (int i = 0; i < len; i += 2) {
        data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
    }
    return data;
}

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From source file:br.msf.commons.text.HexUtils.java

/**
 * Converts an hex number to its byte notation.
 *
 * @param hexString The String representing the hex number.
 * @return The set of bytes that represents the given hex number.
 *///from www .j  a  v a  2 s  . com
public static byte[] toBytes(final String hexString) {
    final String unformatted = unformat(hexString);
    ArgumentUtils.rejectIfDontMatches(unformatted, HEX_PATTERN);
    int length = unformatted.length() / 2;
    byte[] raw = new byte[length];
    for (int i = 0; i < length; i++) {
        int high = Character.digit(unformatted.charAt(i * 2), 16);
        int low = Character.digit(unformatted.charAt(i * 2 + 1), 16);
        int value = (high << 4) | low;
        if (value > 127) {
            value -= 256;
        }
        raw[i] = (byte) value;
    }
    return raw;
}

---

From source file:org.mule.util.StringUtils.java

/**
 * Convert a hexadecimal string into its byte representation.
 * //from   w  w w  . ja  v a  2s . co m
 * @param hex The hexadecimal string.
 * @return The converted bytes or <code>null</code> if the hex String is null.
 */
public static byte[] hexStringToByteArray(String hex) {
    if (hex == null) {
        return null;
    }

    int stringLength = hex.length();
    if (stringLength % 2 != 0) {
        throw new IllegalArgumentException("Hex String must have even number of characters!");
    }

    byte[] result = new byte[stringLength / 2];

    int j = 0;
    for (int i = 0; i < result.length; i++) {
        char hi = Character.toLowerCase(hex.charAt(j++));
        char lo = Character.toLowerCase(hex.charAt(j++));
        result[i] = (byte) ((Character.digit(hi, 16) << 4) | Character.digit(lo, 16));
    }

    return result;
}

---

From source file:StringUtils.java

private static int hexToDigit(final char ch, final int index) {
    final int digit = Character.digit(ch, 16);
    if (digit == -1) {
        throw new IllegalArgumentException("Illegal HexaDecimal character '" + ch + "' at index " + index);
    }/*from ww w .j ava  2  s  .co m*/
    return digit;
}

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From source file:org.energy_home.jemma.javagal.layers.data.implementations.Utils.DataManipulation.java

/**
 * Converts a string to an array of bytes.
 * //from  ww  w. j av  a  2 s.  c o m
 * @param s
 *            the string to convert.
 * @return the converted array of bytes.
 */
public static byte[] hexStringToByteArray(String s) {
    int len = s.length();
    byte[] data = new byte[len / 2];
    for (int i = 0; i < len; i += 2) {
        data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4) + Character.digit(s.charAt(i + 1), 16));
    }
    return data;
}

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From source file:bin.spider.frame.uri.LaxURLCodec.java

/**
 * Decodes an array of URL safe 7-bit characters into an array of 
 * original bytes. Escaped characters are converted back to their 
 * original representation./*  www.  j  ava 2s  .  co  m*/
 * 
 * Differs from URLCodec.decodeUrl() in that it throws no 
 * exceptions; bad or incomplete escape sequences are ignored
 * and passed into result undecoded. This matches the behavior
 * of browsers, which will use inconsistently-encoded URIs
 * in HTTP request-lines. 
 *
 * @param bytes array of URL safe characters
 * @return array of original bytes 
 */
public static final byte[] decodeUrlLoose(byte[] bytes) {
    if (bytes == null) {
        return null;
    }
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    for (int i = 0; i < bytes.length; i++) {
        int b = bytes[i];
        if (b == '+') {
            buffer.write(' ');
            continue;
        }
        if (b == '%') {
            if (i + 2 < bytes.length) {
                int u = Character.digit((char) bytes[i + 1], 16);
                int l = Character.digit((char) bytes[i + 2], 16);
                if (u > -1 && l > -1) {
                    // good encoding
                    int c = ((u << 4) + l);
                    buffer.write((char) c);
                    i += 2;
                    continue;
                } // else: bad encoding digits, leave '%' in place
            } // else: insufficient encoding digits, leave '%' in place
        }
        buffer.write(b);
    }
    return buffer.toByteArray();
}

---

From source file:Utils.java

public static byte[] fromHex(final char[] hex) {
    final int length = hex.length / 2;
    final byte[] raw = new byte[length];
    for (int i = 0; i < length; i++) {
        final int high = Character.digit(hex[i * 2], 16);
        final int low = Character.digit(hex[i * 2 + 1], 16);
        int value = (high << 4) | low;
        if (value > 127) {
            value -= 256;/*  w w  w  . j  a  v  a  2  s  .  com*/
        }
        raw[i] = (byte) value;
    }
    return raw;
}

---

From source file:Main.java

/**
 * Generates a formatted text string given a source string containing
 * "argument markers" of the form "{argNum}" where each argNum must be in
 * the range 0..9. The result is generated by inserting the toString of each
 * argument into the position indicated in the string.
 * <p>//from   w  w w .  j  av a2s  .c o m
 * To insert the "{" character into the output, use a single backslash
 * character to escape it (i.e. "\{"). The "}" character does not need to be
 * escaped.
 * 
 * @param format
 *            String the format to use when printing.
 * @param args
 *            Object[] the arguments to use.
 * @return String the formatted message.
 */
public static String format(String format, Object[] args) {
    StringBuilder answer = new StringBuilder(format.length() + (args.length * 20));
    String[] argStrings = new String[args.length];
    for (int i = 0; i < args.length; ++i) {
        if (args[i] == null)
            argStrings[i] = "<null>";
        else
            argStrings[i] = args[i].toString();
    }
    int lastI = 0;
    for (int i = format.indexOf('{', 0); i >= 0; i = format.indexOf('{', lastI)) {
        if (i != 0 && format.charAt(i - 1) == '\\') {
            // It's escaped, just print and loop.
            if (i != 1)
                answer.append(format.substring(lastI, i - 1));
            answer.append('{');
            lastI = i + 1;
        } else {
            // It's a format character.
            if (i > format.length() - 3) {
                // Bad format, just print and loop.
                answer.append(format.substring(lastI, format.length()));
                lastI = format.length();
            } else {
                int argnum = (byte) Character.digit(format.charAt(i + 1), 10);
                if (argnum < 0 || format.charAt(i + 2) != '}') {
                    // Bad format, just print and loop.
                    answer.append(format.substring(lastI, i + 1));
                    lastI = i + 1;
                } else {
                    // Got a good one!
                    answer.append(format.substring(lastI, i));
                    if (argnum >= argStrings.length)
                        answer.append("<missing argument>");
                    else
                        answer.append(argStrings[argnum]);
                    lastI = i + 3;
                }
            }
        }
    }
    if (lastI < format.length())
        answer.append(format.substring(lastI, format.length()));
    return answer.toString();
}

---

From source file:org.talend.dataquality.semantic.validator.impl.SedolValidator.java

public int getSedolCheckDigit(String str) {
    String strUpper = str.toUpperCase();
    int total = 0;
    for (int i = 0; i < 6; i++) {
        char s = strUpper.charAt(i);
        total += Character.digit(s, 36) * mult[i];
    }/*  ww  w  .  j  a  va 2  s  .  c om*/
    return (10 - (total % 10)) % 10;
}

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