Example usage for java.io UTFDataFormatException UTFDataFormatException

Introduction

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

Prototype

public UTFDataFormatException() 

Source Link

Document

Constructs a UTFDataFormatException with null as its error detail message.

Usage

From source file:ArrayByte.java

public String readUTF() throws IndexOutOfBoundsException, UTFDataFormatException {
    checkAvailable(2);//from   w  w  w.ja v a2  s  .c o  m
    int utfLength = readShort() & 0xffff;
    checkAvailable(utfLength);

    int goalPosition = position() + utfLength;

    StringBuffer string = new StringBuffer(utfLength);
    while (position() < goalPosition) {
        int a = readByte() & 0xff;
        if ((a & 0x80) == 0) {
            string.append((char) a);
        } else {
            int b = readByte() & 0xff;
            if ((b & 0xc0) != 0x80) {
                throw new UTFDataFormatException();
            }

            if ((a & 0xe0) == 0xc0) {
                char ch = (char) (((a & 0x1f) << 6) | (b & 0x3f));
                string.append(ch);
            } else if ((a & 0xf0) == 0xe0) {
                int c = readByte() & 0xff;
                if ((c & 0xc0) != 0x80) {
                    throw new UTFDataFormatException();
                }
                char ch = (char) (((a & 0x0f) << 12) | ((b & 0x3f) << 6) | (c & 0x3f));
                string.append(ch);
            } else {
                throw new UTFDataFormatException();
            }
        }
    }
    return string.toString();
}

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From source file:ArrayByte.java

public void writeUTF(String s) throws UTFDataFormatException {

    int utfLength = 0;
    for (int i = 0; i < s.length(); i++) {
        char ch = s.charAt(i);
        if (ch > 0 && ch < 0x80) {
            utfLength++;/*  w w  w  . j  a va  2 s .c o  m*/
        } else if (ch == 0 || (ch >= 0x80 && ch < 0x800)) {
            utfLength += 2;
        } else {
            utfLength += 3;
        }
    }

    if (utfLength > 65535) {
        throw new UTFDataFormatException();
    }

    ensureCapacity(2 + utfLength);
    writeShort(utfLength);

    for (int i = 0; i < s.length(); i++) {
        int ch = s.charAt(i);
        if (ch > 0 && ch < 0x80) {
            writeByte(ch);
        } else if (ch == 0 || (ch >= 0x80 && ch < 0x800)) {
            writeByte(0xc0 | (0x1f & (ch >> 6)));
            writeByte(0x80 | (0x3f & ch));
        } else {
            writeByte(0xe0 | (0x0f & (ch >> 12)));
            writeByte(0x80 | (0x3f & (ch >> 6)));
            writeByte(0x80 | (0x3f & ch));
        }
    }
}

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From source file:com.exadel.flamingo.flex.messaging.amf.io.AMF0Deserializer.java

/**
 * This is a hacked verison of Java's DataInputStream.readUTF(), which only
 * supports Strings <= 65535 UTF-8-encoded characters
 *///w w w  . j ava  2 s .  c o  m
private Object readLongUTF(DataInputStream in) throws IOException {
    int utflen = in.readInt();
    StringBuffer str = new StringBuffer(utflen);
    byte bytearr[] = new byte[utflen];
    int c, char2, char3;
    int count = 0;

    in.readFully(bytearr, 0, utflen);

    while (count < utflen) {
        c = bytearr[count] & 0xff;
        switch (c >> 4) {
        case 0:
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 7:
            /* 0xxxxxxx*/
            count++;
            str.append((char) c);
            break;
        case 12:
        case 13:
            /* 110x xxxx   10xx xxxx*/
            count += 2;
            if (count > utflen)
                throw new UTFDataFormatException();
            char2 = bytearr[count - 1];
            if ((char2 & 0xC0) != 0x80)
                throw new UTFDataFormatException();
            str.append((char) (((c & 0x1F) << 6) | (char2 & 0x3F)));
            break;
        case 14:
            /* 1110 xxxx  10xx xxxx  10xx xxxx */
            count += 3;
            if (count > utflen)
                throw new UTFDataFormatException();
            char2 = bytearr[count - 2];
            char3 = bytearr[count - 1];
            if (((char2 & 0xC0) != 0x80) || ((char3 & 0xC0) != 0x80))
                throw new UTFDataFormatException();
            str.append((char) (((c & 0x0F) << 12) | ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0)));
            break;
        default:
            /* 10xx xxxx,  1111 xxxx */
            throw new UTFDataFormatException();
        }
    }

    // The number of chars produced may be less than utflen
    return new String(str);
}

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From source file:org.openamf.io.AMFDeserializer.java

/**
 * This is a hacked verison of Java's DataInputStream.readUTF(), which only
 * supports Strings <= 65535 UTF-8-encoded characters
 *///from   ww  w.  jav  a  2  s. c o  m
private Object readLongUTF(DataInputStream in) throws IOException {
    int utflen = in.readInt();
    StringBuffer str = new StringBuffer(utflen);
    byte bytearr[] = new byte[utflen];
    int c, char2, char3;
    int count = 0;

    in.readFully(bytearr, 0, utflen);

    while (count < utflen) {
        c = (int) bytearr[count] & 0xff;
        switch (c >> 4) {
        case 0:
        case 1:
        case 2:
        case 3:
        case 4:
        case 5:
        case 6:
        case 7:
            /* 0xxxxxxx*/
            count++;
            str.append((char) c);
            break;
        case 12:
        case 13:
            /* 110x xxxx   10xx xxxx*/
            count += 2;
            if (count > utflen)
                throw new UTFDataFormatException();
            char2 = (int) bytearr[count - 1];
            if ((char2 & 0xC0) != 0x80)
                throw new UTFDataFormatException();
            str.append((char) (((c & 0x1F) << 6) | (char2 & 0x3F)));
            break;
        case 14:
            /* 1110 xxxx  10xx xxxx  10xx xxxx */
            count += 3;
            if (count > utflen)
                throw new UTFDataFormatException();
            char2 = (int) bytearr[count - 2];
            char3 = (int) bytearr[count - 1];
            if (((char2 & 0xC0) != 0x80) || ((char3 & 0xC0) != 0x80))
                throw new UTFDataFormatException();
            str.append((char) (((c & 0x0F) << 12) | ((char2 & 0x3F) << 6) | ((char3 & 0x3F) << 0)));
            break;
        default:
            /* 10xx xxxx,  1111 xxxx */
            throw new UTFDataFormatException();
        }
    }

    // The number of chars produced may be less than utflen
    return new String(str);
}

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