source/iobase.cpp - master - bortsov/ch32v203-BatteryDisplay

source/iobase.cpp
118 строк2 KB
Vitaliy Bortsov
build: fix warnings
18 мар 2026, 21:20
18 мар 2026, 21:208f56e49
#include "iobase.h"

#include <cmath>
#include <cstring>


static unsigned int uint32_tToA(char* to, const uint32_t v_)
{
  uint32_t v = v_;
  constexpr int maxSize = 12; /* Only for 32-bit integers: 32/Log_2[10]=9.63:*/
  char buf[maxSize];
  char* const ptrEnd = buf + sizeof(buf) - 1;
  char* ptr = ptrEnd;
  *ptr = 0;
  do
  {
    --ptr;
    *ptr = '0' + static_cast<char>(v % 10);
    v /= 10;
  } while (v);
  const int lengthWithEndOfString = ptrEnd - ptr + 1;
  memcpy(to, ptr, lengthWithEndOfString);
  return lengthWithEndOfString;
}


class CommunicationBase& operator << (class CommunicationBase& s, const unsigned int v)
{
  constexpr size_t maxLength = 11; /* максимальная длина строкового представления 32-битного беззнакового числа */
  char buf[maxLength];
  const auto lengthWithEndOfString = uint32_tToA(buf, v);
  const auto lengthWithoutEndOfString = lengthWithEndOfString - 1;
  s.putArray(buf, lengthWithoutEndOfString);
  return s;
}


class CommunicationBase& operator << (class CommunicationBase& s, const uint64_t& binary)
{
  if (binary == 0)
  {
    s.putChar('0');
  }
  else
  {
    constexpr int MAX_CHARS{20};

    /* maximum is 18'446'744'073'709'551'615 -- 20 chars */
    uint64_t v{binary};
    uint64_t temp = 10'000'000'000'000'000'000ULL;
    bool flagZero{true};
    for (int i = 0; i < MAX_CHARS; ++i)
    {
      const int v2{static_cast<int>(v / temp)};
      v -= v2 * temp;
      temp /= 10;
      if (flagZero)
      {
        if (v2 != 0)
        {
          flagZero = false;
        }
      }
      if (flagZero == false)
      {
        s.putChar(static_cast<char>(v2) + '0');
      }
    }
  }
  return s;
}


class CommunicationBase& operator<< (class CommunicationBase& s, const char* str)
{
  s.putString(str);
  return s;
}


class CommunicationBase& operator<< (class CommunicationBase& s, const char ch)
{
  s.putChar(ch);
  return s;
}


class CommunicationBase& operator<< (class CommunicationBase& s, const int v)
{
  unsigned int temp;
  if (v < 0)
  {
    s << '-';
    temp = -v;
  }
  else
  {
    temp = v;
  }
  s << temp;
  return s;
}


class CommunicationBase& operator << (class CommunicationBase& s, const std::bitset<32>& v32)
{
  for (int i = 31; i >= 0; --i)
  {
    s << static_cast<char>(v32[i] + '0');
  }
  return s;
}


void CommunicationBase::putString(const char* str)
{
  putArray(str, strlen(str));
}