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