mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
#include "StringFormatter.h"
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#include <stdarg.h>
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void StringFormatter::print( const __FlashStringHelper* input...) {
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va_list args;
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va_start(args, input);
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send2(Serial,input,args);
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}
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void StringFormatter::send(Print & stream, const __FlashStringHelper* input...) {
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va_list args;
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va_start(args, input);
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send2(stream,input,args);
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}
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void StringFormatter::send2(Print & stream,const __FlashStringHelper* format, va_list args) {
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// thanks to Jan Turoň https://arduino.stackexchange.com/questions/56517/formatting-strings-in-arduino-for-output
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char* flash=(char*)format;
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for(int i=0; ; ++i) {
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char c=pgm_read_byte_near(flash+i);
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if (c=='\0') return;
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if(c!='%') { stream.print(c); continue; }
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i++;
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c=pgm_read_byte_near(flash+i);
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switch(c) {
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case '%': stream.print('%'); break;
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case 'c': stream.print((char) va_arg(args, int)); break;
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case 's': stream.print(va_arg(args, char*)); break;
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case 'S': stream.print((const __FlashStringHelper*)va_arg(args, char*)); break;
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case 'd': stream.print(va_arg(args, int), DEC); break;
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case 'b': stream.print(va_arg(args, int), BIN); break;
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case 'o': stream.print(va_arg(args, int), OCT); break;
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case 'x': stream.print(va_arg(args, int), HEX); break;
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case 'f': stream.print(va_arg(args, double), 2); break;
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}
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}
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va_end(args);
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}
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