notepad--/common.cpp

#include "common.h"


int nbDigitsFromNbLines(size_t nbLines)
{
	int nbDigits = 0; // minimum number of digit should be 4
	if (nbLines < 10) nbDigits = 1;
	else if (nbLines < 100) nbDigits = 2;
	else if (nbLines < 1000) nbDigits = 3;
	else if (nbLines < 10000) nbDigits = 4;
	else if (nbLines < 100000) nbDigits = 5;
	else if (nbLines < 1000000) nbDigits = 6;
	else // rare case
	{
		nbDigits = 7;
		nbLines /= 1000000;

		while (nbLines)
		{
			nbLines /= 10;
			++nbDigits;
		}
	}
	return nbDigits;
}