path: root/src/common/tuklib_mbstr_fw.c

///////////////////////////////////////////////////////////////////////////////
//
/// \file       tuklib_mbstr_fw.c
/// \brief      Get the field width for printf() e.g. to align table columns
//
//  Author:     Lasse Collin
//
//  This file has been put into the public domain.
//  You can do whatever you want with this file.
//
///////////////////////////////////////////////////////////////////////////////

#include "tuklib_mbstr.h"


extern int
tuklib_mbstr_fw(const char *str, int columns_min)
{
	size_t len;
	const size_t width = tuklib_mbstr_width(str, &len);
	if (width == (size_t)-1)
		return -1;

	if (width > (size_t)columns_min)
		return 0;

	if (width < (size_t)columns_min)
		len += (size_t)columns_min - width;

	return len;
}