com.google.protobuf.CodedInputStream# getBytesUntilLimit ( ) 源码实例Demo

下面列出了com.google.protobuf.CodedInputStream# getBytesUntilLimit ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： lams 文件： XProtocolDecoder.java


@Override
public <T> T decodeSet(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        StringBuilder vals = new StringBuilder();
        while (inputStream.getBytesUntilLimit() > 0) {
            if (vals.length() > 0) {
                vals.append(",");
            }
            long valLen = inputStream.readUInt64();
            // TODO: charset
            vals.append(new String(inputStream.readRawBytes((int) valLen)));
        }
        // TODO: charset mess here
        byte[] buf = vals.toString().getBytes();
        return vf.createFromBytes(buf, 0, buf.length);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码2 项目： FoxTelem 文件： XProtocolDecoder.java


@Override
public <T> T decodeSet(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        StringBuilder vals = new StringBuilder();
        while (inputStream.getBytesUntilLimit() > 0) {
            if (vals.length() > 0) {
                vals.append(",");
            }
            long valLen = inputStream.readUInt64();
            // TODO: charset
            vals.append(new String(inputStream.readRawBytes((int) valLen)));
        }
        // TODO: charset mess here
        byte[] buf = vals.toString().getBytes();
        return vf.createFromBytes(buf, 0, buf.length);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码3 项目： lams 文件： XProtocolDecoder.java


@Override
public <T> T decodeTimestamp(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        int year = (int) inputStream.readUInt64();
        int month = (int) inputStream.readUInt64();
        int day = (int) inputStream.readUInt64();

        // do we have a time too?
        if (inputStream.getBytesUntilLimit() > 0) {
            int hours = 0;
            int minutes = 0;
            int seconds = 0;

            int nanos = 0;

            if (!inputStream.isAtEnd()) {
                hours = (int) inputStream.readInt64();
                if (!inputStream.isAtEnd()) {
                    minutes = (int) inputStream.readInt64();
                    if (!inputStream.isAtEnd()) {
                        seconds = (int) inputStream.readInt64();
                        if (!inputStream.isAtEnd()) {
                            nanos = 1000 * (int) inputStream.readInt64();
                        }
                    }
                }
            }

            return vf.createFromTimestamp(year, month, day, hours, minutes, seconds, nanos);
        }
        return vf.createFromDate(year, month, day);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码4 项目： lams 文件： XProtocolDecoder.java


@Override
public <T> T decodeByteArray(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        // c.f. Streaming_command_delegate::get_string()
        int size = inputStream.getBytesUntilLimit();
        size--; // for null terminator
        return vf.createFromBytes(inputStream.readRawBytes(size), 0, size);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码5 项目： FoxTelem 文件： XProtocolDecoder.java


@Override
public <T> T decodeTimestamp(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        int year = (int) inputStream.readUInt64();
        int month = (int) inputStream.readUInt64();
        int day = (int) inputStream.readUInt64();

        // do we have a time too?
        if (inputStream.getBytesUntilLimit() > 0) {
            int hours = 0;
            int minutes = 0;
            int seconds = 0;

            int nanos = 0;

            if (!inputStream.isAtEnd()) {
                hours = (int) inputStream.readInt64();
                if (!inputStream.isAtEnd()) {
                    minutes = (int) inputStream.readInt64();
                    if (!inputStream.isAtEnd()) {
                        seconds = (int) inputStream.readInt64();
                        if (!inputStream.isAtEnd()) {
                            nanos = 1000 * (int) inputStream.readInt64();
                        }
                    }
                }
            }

            return vf.createFromTimestamp(year, month, day, hours, minutes, seconds, nanos);
        }
        return vf.createFromDate(year, month, day);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码6 项目： FoxTelem 文件： XProtocolDecoder.java


@Override
public <T> T decodeByteArray(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        // c.f. Streaming_command_delegate::get_string()
        int size = inputStream.getBytesUntilLimit();
        size--; // for null terminator
        return vf.createFromBytes(inputStream.readRawBytes(size), 0, size);
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码7 项目： lams 文件： XProtocolDecoder.java


@Override
public <T> T decodeDecimal(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        // packed BCD format (c.f. wikipedia)
        // TODO: optimization possibilities include using int/long if the digits is < X and scale = 0
        byte scale = inputStream.readRawByte();
        // we allocate an extra char for the sign
        CharBuffer unscaledString = CharBuffer.allocate(2 * inputStream.getBytesUntilLimit());
        unscaledString.position(1);
        byte sign = 0;
        // read until we encounter the sign bit
        while (true) {
            int b = 0xFF & inputStream.readRawByte();
            if ((b >> 4) > 9) {
                sign = (byte) (b >> 4);
                break;
            }
            unscaledString.append((char) ((b >> 4) + '0'));
            if ((b & 0x0f) > 9) {
                sign = (byte) (b & 0x0f);
                break;
            }
            unscaledString.append((char) ((b & 0x0f) + '0'));
        }
        if (inputStream.getBytesUntilLimit() > 0) {
            throw AssertionFailedException
                    .shouldNotHappen("Did not read all bytes while decoding decimal. Bytes left: " + inputStream.getBytesUntilLimit());
        }
        switch (sign) {
            case 0xa:
            case 0xc:
            case 0xe:
            case 0xf:
                unscaledString.put(0, '+');
                break;
            case 0xb:
            case 0xd:
                unscaledString.put(0, '-');
                break;
        }
        // may have filled the CharBuffer or one remaining. need to remove it before toString()
        int characters = unscaledString.position();
        unscaledString.clear(); // reset position
        BigInteger unscaled = new BigInteger(unscaledString.subSequence(0, characters).toString());
        return vf.createFromBigDecimal(new BigDecimal(unscaled, scale));
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

源代码8 项目： FoxTelem 文件： XProtocolDecoder.java


@Override
public <T> T decodeDecimal(byte[] bytes, int offset, int length, ValueFactory<T> vf) {
    try {
        CodedInputStream inputStream = CodedInputStream.newInstance(bytes, offset, length);
        // packed BCD format (c.f. wikipedia)
        // TODO: optimization possibilities include using int/long if the digits is < X and scale = 0
        byte scale = inputStream.readRawByte();
        // we allocate an extra char for the sign
        CharBuffer unscaledString = CharBuffer.allocate(2 * inputStream.getBytesUntilLimit());
        unscaledString.position(1);
        byte sign = 0;
        // read until we encounter the sign bit
        while (true) {
            int b = 0xFF & inputStream.readRawByte();
            if ((b >> 4) > 9) {
                sign = (byte) (b >> 4);
                break;
            }
            unscaledString.append((char) ((b >> 4) + '0'));
            if ((b & 0x0f) > 9) {
                sign = (byte) (b & 0x0f);
                break;
            }
            unscaledString.append((char) ((b & 0x0f) + '0'));
        }
        if (inputStream.getBytesUntilLimit() > 0) {
            throw AssertionFailedException
                    .shouldNotHappen("Did not read all bytes while decoding decimal. Bytes left: " + inputStream.getBytesUntilLimit());
        }
        switch (sign) {
            case 0xa:
            case 0xc:
            case 0xe:
            case 0xf:
                unscaledString.put(0, '+');
                break;
            case 0xb:
            case 0xd:
                unscaledString.put(0, '-');
                break;
        }
        // may have filled the CharBuffer or one remaining. need to remove it before toString()
        int characters = unscaledString.position();
        unscaledString.clear(); // reset position
        BigInteger unscaled = new BigInteger(unscaledString.subSequence(0, characters).toString());
        return vf.createFromBigDecimal(new BigDecimal(unscaled, scale));
    } catch (IOException e) {
        throw new DataReadException(e);
    }
}

方法所在类

com.google.protobuf.CodedInputStream