Class ISwitchableStream

pdal/util/IStream.hpp:600–702

Stream wrapper for input of binary data that converts from either little-endian or big-endian to host ordering, depending on object settings. */

  settings.
*/
class ISwitchableStream : public IStream
{
public:
    static const bool DefaultIsLittleEndian = true;

    PDAL_EXPORT ISwitchableStream() : m_isLittleEndian(DefaultIsLittleEndian)
    {}

    PDAL_EXPORT ISwitchableStream(const std::string& filename)
        : IStream(filename)
        , m_isLittleEndian(DefaultIsLittleEndian)
    {}

    PDAL_EXPORT ISwitchableStream(std::istream* stream)
        : IStream(stream)
        , m_isLittleEndian(DefaultIsLittleEndian)
    {}

    PDAL_EXPORT bool isLittleEndian() const
        { return m_isLittleEndian; }
    PDAL_EXPORT void switchToLittleEndian()
        { m_isLittleEndian = true; }
    PDAL_EXPORT void switchToBigEndian()
        { m_isLittleEndian = false; }

    PDAL_EXPORT ISwitchableStream& operator>>(uint8_t& v)
    {
        v = (uint8_t)m_stream->get();
        return *this;
    }

    PDAL_EXPORT ISwitchableStream& operator>>(int8_t& v)
    {
        v = (int8_t)m_stream->get();
        return *this;
    }

    PDAL_EXPORT ISwitchableStream& operator>>(uint16_t& v)
    {
        m_stream->read((char*)&v, sizeof(v));
        v = isLittleEndian() ? le16toh(v) : be16toh(v);
        return *this;
    }

    PDAL_EXPORT ISwitchableStream& operator>>(int16_t& v)
    {
        m_stream->read((char*)&v, sizeof(v));
        v = isLittleEndian() ? (int16_t)le16toh((uint16_t)v)
                             : (int16_t)be16toh((uint16_t)v);
        return *this;
    }

    PDAL_EXPORT ISwitchableStream& operator>>(uint32_t& v)
    {
        m_stream->read((char*)&v, sizeof(v));
        v = isLittleEndian() ? le32toh(v) : be32toh(v);
        return *this;
    }