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Earle F. Philhower, III 7436f3802a
Allow Print::println() to work with PROGMEM strings (#6450)
Adjust the ::write implementation in Print and its overridden copy in
UART to allow it to silentely accept PROGMEM strings (since there is no
write_P macro).

Fixes #6383
2019-08-28 07:59:19 -07:00

107 lines
3.7 KiB
C++

/*
Print.h - Base class that provides print() and println()
Copyright (c) 2008 David A. Mellis. All right reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef Print_h
#define Print_h
#include <stdint.h>
#include <stddef.h>
#include "WString.h"
#include "Printable.h"
#define DEC 10
#define HEX 16
#define OCT 8
#define BIN 2
class Print {
private:
int write_error;
size_t printNumber(unsigned long, uint8_t);
size_t printFloat(double, uint8_t);
protected:
void setWriteError(int err = 1) {
write_error = err;
}
public:
Print() :
write_error(0) {
}
int getWriteError() {
return write_error;
}
void clearWriteError() {
setWriteError(0);
}
virtual size_t write(uint8_t) = 0;
size_t write(const char *str) {
if(str == NULL)
return 0;
return write((const uint8_t *) str, strlen_P(str));
}
virtual size_t write(const uint8_t *buffer, size_t size);
size_t write(const char *buffer, size_t size) {
return write((const uint8_t *) buffer, size);
}
// These handle ambiguity for write(0) case, because (0) can be a pointer or an integer
inline size_t write(short t) { return write((uint8_t)t); }
inline size_t write(unsigned short t) { return write((uint8_t)t); }
inline size_t write(int t) { return write((uint8_t)t); }
inline size_t write(unsigned int t) { return write((uint8_t)t); }
inline size_t write(long t) { return write((uint8_t)t); }
inline size_t write(unsigned long t) { return write((uint8_t)t); }
// Enable write(char) to fall through to write(uint8_t)
inline size_t write(char c) { return write((uint8_t) c); }
inline size_t write(int8_t c) { return write((uint8_t) c); }
size_t printf(const char * format, ...) __attribute__ ((format (printf, 2, 3)));
size_t printf_P(PGM_P format, ...) __attribute__((format(printf, 2, 3)));
size_t print(const __FlashStringHelper *);
size_t print(const String &);
size_t print(const char[]);
size_t print(char);
size_t print(unsigned char, int = DEC);
size_t print(int, int = DEC);
size_t print(unsigned int, int = DEC);
size_t print(long, int = DEC);
size_t print(unsigned long, int = DEC);
size_t print(double, int = 2);
size_t print(const Printable&);
size_t println(const __FlashStringHelper *);
size_t println(const String &s);
size_t println(const char[]);
size_t println(char);
size_t println(unsigned char, int = DEC);
size_t println(int, int = DEC);
size_t println(unsigned int, int = DEC);
size_t println(long, int = DEC);
size_t println(unsigned long, int = DEC);
size_t println(double, int = 2);
size_t println(const Printable&);
size_t println(void);
virtual void flush() { /* Empty implementation for backward compatibility */ }
};
#endif