1// SPDX-License-Identifier: 0BSD
2
3///////////////////////////////////////////////////////////////////////////////
4//
5/// \file       tuklib_mbstr_fw.c
6/// \brief      Get the field width for printf() e.g. to align table columns
7//
8//  Author:     Lasse Collin
9//
10///////////////////////////////////////////////////////////////////////////////
11
12#include "tuklib_mbstr.h"
13
14
15extern int
16tuklib_mbstr_fw(const char *str, int columns_min)
17{
18	size_t len;
19	const size_t width = tuklib_mbstr_width(str, &len);
20	if (width == (size_t)-1)
21		return -1;
22
23	if (width > (size_t)columns_min)
24		return 0;
25
26	if (width < (size_t)columns_min)
27		len += (size_t)columns_min - width;
28
29	return (int)len;
30}
31