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LineReceiver.h
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LineReceiver.h
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#ifndef LINERECEIVER_H
#define LINERECEIVER_H
#include <Arduino.h>
float lineParse(const char* buf1, unsigned char* ptr);
unsigned char lineParse(const char* buf1, unsigned char* ptr, const char* cPtr);
class LineReceiver
{
public:
typedef void (*callback_t)(const char*);
static const size_t default_size = 100;
LineReceiver(size_t n = default_size, callback_t callback = nullptr) { init(n, callback); }
LineReceiver() { init(default_size, nullptr); }
bool push(char c);
const char* get() const { return buf_; }
size_t size() const { return size_; }
size_t length() const { return p_ - buf_; }
size_t space() const { return size() - length() - 1; }
void backspace() { if(p_>buf_) --*p_=0; }
void clear();
void setOverflowCallback(callback_t callback) { eventOverflow_=callback; }
void setCallback(callback_t callback) { callback_=callback; }
bool overflowed();
const char lastChar() { if(p_>buf_) return *(p_-1); else return 0; } // access to last character to enter buffer
void pushTrueOverflow(bool n) { flags=(flags&~2)|(n<<1); } // makes push return true if buffer overflow occurs
void pushTrueSpecialChars(bool n) { flags=(flags&~4)|(n<<2); } // makes push return true if a special character enters buffer
void callbackSpecialChars(bool n) { flags=(flags&~24)|(n<<3); } // calls regular callback for special char if this is set, cancels overflowSpecialChars
void overflowSpecialChars(bool n) { flags=(flags&~24)|(n<<4); } // calls eventOverflow callback for special char, cancels callbackSpecialChars
~LineReceiver() { free(buf_); }
protected:
private:
void init(size_t n, callback_t callback);
callback_t callback_, eventOverflow_;
char* buf_;
char* p_;
size_t size_;
uint8_t flags;
};
#endif // LINERECEIVER_H