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Diffstat (limited to 'lib/c32swidth.c')
-rw-r--r-- | lib/c32swidth.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/c32swidth.c b/lib/c32swidth.c new file mode 100644 index 0000000000..2f7adcf74c --- /dev/null +++ b/lib/c32swidth.c @@ -0,0 +1,43 @@ +/* Determine number of screen columns needed for a size-bounded 32-bit wide string. + Copyright (C) 2023 Free Software Foundation, Inc. + + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + This file is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. */ + +#include <config.h> + +#define IN_C32SWIDTH +/* Specification. */ +#include <uchar.h> + +#if _GL_WCHAR_T_IS_UCS4 && !GNULIB_defined_mbstate_t + +# include <wchar.h> + +_GL_EXTERN_INLINE +int +c32swidth (const char32_t *s, size_t n) +{ + return wcswidth ((const wchar_t *) s, n); +} + +#else + +# include <limits.h> + +# define FUNC c32swidth +# define UNIT char32_t +# define CHARACTER_WIDTH c32width +# include "wcswidth-impl.h" + +#endif |