GY-63_MS5611/libraries/PrintCharArray/PrintCharArray.h
2023-11-16 10:36:39 +01:00

104 lines
1.5 KiB
C++

#pragma once
//
// FILE: PrintCharArray.h
// AUTHOR: Rob Tillaart
// VERSION: 0.3.4
// PURPOSE: Class that captures prints into a char array
// DATE: 2017-12-07
// URL: https://github.com/RobTillaart/PrintCharArray
#include "Arduino.h"
#include "Print.h"
#define PRINTCHARARRAY_VERSION (F("0.3.4"))
#ifndef PRINTCHARARRAY_MAX_BUFFER_SIZE
#define PRINTCHARARRAY_MAX_BUFFER_SIZE 250
#endif
class PrintCharArray: public Print
{
public:
PrintCharArray(uint8_t size = 100)
{
_bufSize = constrain(size, 20, PRINTCHARARRAY_MAX_BUFFER_SIZE);
_buffer = (char *) malloc(_bufSize);
};
~PrintCharArray()
{
if (_buffer) free(_buffer);
};
size_t write(uint8_t c)
{
if (_index < _bufSize - 1)
{
_buffer[_index++] = c;
return 1;
}
return 0;
}
size_t write(uint8_t * str, uint8_t length)
{
if ( (int(_index) + length) >= _bufSize) return 0; // does not fit.
uint8_t len = length;
uint8_t i = 0;
while (len--)
{
_buffer[_index++] = str[i++];
}
return length;
}
void clear()
{
_index = 0;
}
int available()
{
return (_bufSize - _index);
}
// int length() { return _index; }; // better as size()?
int size()
{
return _index;
}
int bufSize()
{
return _bufSize;
}
char * getBuffer()
{
_buffer[_index] = '\0';
return _buffer;
}
private:
char* _buffer;
uint8_t _bufSize = 0;
uint8_t _index = 0;
};
// -- END OF FILE --