Arduino library to determine the length of print statements.
PrintSize is a minimal library to determine the length of a variable when printed. This includes printing of floats, integers in decimal or hex notation.
Works for print(), println() and if supported printf() e.g. ESP32.
Since 0.2.0 it has a total counter to add up the characters "printed" since the last reset() call. See examples.
- https://github.com/RobTillaart/PrintCharArray captures data in a char array buffer.
- https://github.com/RobTillaart/PrintSize counts length of a number of print commands.
- https://github.com/RobTillaart/PrintString captures data in a String.
#include "PrintSize.h"- PrintSize() Constructor
- size_t write(uint8_t c) core. Note: gives a warning unused parameter.
- size_t write(uint8_t * str, uint8_t length) Note: gives a warning unused parameter.
- void reset() reset the total counter.
- uint32_t total() total bytes "printed".
Example PrintSize1.ino shows the right alignment of 10 random numbers.
Example PrintSize_total.ino shows (elementary) line fitting.
Can be used to calculate the needed space.
- to properly do a right alignment e.g. for numbers or variable text.
- do left alignment and overwrite previous output with just enough spaces.
- centring of numbers.
- see if output will fit into a line / display.
- see if a string fits in EEPROM or any other storage medium.
- see if a string fits in a communication buffer.
- add examples
- add a function to handle tab char correctly e.g.
could add more than one char. Interferes with the write(str, length).
- setTabSize(2, 4, 6, 8...);
- getTabSize();
- uint8_t _tabSize = 4;
- PRINTSIZE_LIB_VERSION ?
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