File indexing completed on 2024-11-24 04:46:19

 /*
     SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #pragma once
 
 #include <QDateTime>
 
 #include <cstdint>
 
 /** @file vdvbasictypes.h
  *  Low-level data types used in VDV ticket structs.
  */
 
 namespace KItinerary {
 
 #pragma pack(push)
 #pragma pack(1)
 
 /** Two-digit BCD encoded number. */
 template <int N>
 struct VdvBcdNumber
 {
     static_assert(N > 0 && N <= 4);
     uint8_t data[N];
 
     inline constexpr uint32_t value() const
     {
         uint32_t v = 0;
         for (int i = 0; i < N; ++i) {
             v *= 100;
             v += ((data[i] & 0xF0) >> 4) * 10 + (data[i] & 0x0F);
         }
         return v;
     }
 
     inline constexpr operator uint32_t() const { return value(); }
 };
 
 /** Date encoded as 8 BCD digits. */
 struct VdvBcdDate
 {
     VdvBcdNumber<2> bcdYear;
     VdvBcdNumber<1> bcdMonth;
     VdvBcdNumber<1> bcdDay;
 
     inline QDate value() const
     {
         return QDate(bcdYear, bcdMonth, bcdDay);
     }
 
     inline operator QDate() const { return value(); }
     inline bool operator==(const QDate &other) const { return value() == other; }
     inline bool operator!=(const QDate &other) const { return value() != other; }
 
     // dummy assignment operator for compatibility with the Q_PROPERTY system
     inline VdvBcdDate& operator=(const QDate&) { return *this; }
 };
 
 /** Big-endian numeric value. */
 template <int N>
 struct VdvNumber
 {
     static_assert(N > 0 && N <= 4);
     uint8_t data[N];
 
     inline constexpr uint32_t value() const
     {
         uint32_t v = 0;
         for (int i = 0; i < N; ++i) {
             v <<= 8;
             v |= data[i];
         }
         return v;
     }
 
     inline constexpr operator uint32_t() const { return value(); }
 
     // dummy assignment operator for compatibility with the Q_PROPERTY system
     inline VdvNumber<N>& operator=(uint32_t) { return *this; }
 };
 
 /** Date/time representation encoded in 4 byte. */
 struct VdvDateTimeCompact
 {
     VdvNumber<4> data;
 
     inline QDateTime value() const
     {
         return QDateTime(
             {
                 (int)((data & 0b1111'1110'0000'0000'0000'0000'0000'0000) >> 25) + 1990,
                 (int)(data & 0b0000'0001'1110'0000'0000'0000'0000'0000) >> 21,
                 (int)(data & 0b0000'0000'0001'1111'0000'0000'0000'0000) >> 16
             }, {
                 (int)(data & 0b0000'0000'0000'0000'1111'1000'0000'0000) >> 11,
                 (int)(data & 0b0000'0000'0000'0000'0000'0111'1110'0000) >> 5,
                 (int)(data & 0b0000'0000'0000'0000'0000'0000'0001'1111) * 2
             });
     }
 
     inline operator QDateTime() const { return value(); }
     inline bool operator==(const QDateTime &other) const { return value() == other; }
     inline bool operator!=(const QDateTime &other) const { return value() != other; }
 
     // dummy assignment operator for compatibility with the Q_PROPERTY system
     inline VdvDateTimeCompact& operator=(const QDateTime&) { return *this; }
 };
 
 #pragma pack(pop)
 
 }