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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
commit | 9d8085074991d5c0a42d6fc96a2d1a3ee918aad1 (patch) | |
tree | c85bca1e6c11eb872edfc64c524d20f2b7e3307b /lib/sh/wcsnwidth.c | |
parent | Initial commit. (diff) | |
download | bash-upstream.tar.xz bash-upstream.zip |
Adding upstream version 5.1.upstream/5.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/sh/wcsnwidth.c')
-rw-r--r-- | lib/sh/wcsnwidth.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/sh/wcsnwidth.c b/lib/sh/wcsnwidth.c new file mode 100644 index 0000000..9c7e7cc --- /dev/null +++ b/lib/sh/wcsnwidth.c @@ -0,0 +1,56 @@ +/* wcsnwidth.c - compute display width of wide character string, up to max + specified width, return length. */ + +/* Copyright (C) 2012 Free Software Foundation, Inc. + + This file is part of GNU Bash, the Bourne Again SHell. + + Bash is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + Bash 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Bash. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <config.h> + +#if defined (HANDLE_MULTIBYTE) + +#include <stdc.h> +#include <wchar.h> +#include <bashansi.h> + +/* Return the number of wide characters that will be displayed from wide string + PWCS. If the display width exceeds MAX, return the number of wide chars + from PWCS required to display MAX characters on the screen. */ +int +wcsnwidth(pwcs, n, max) + const wchar_t *pwcs; + size_t n, max; +{ + wchar_t wc, *ws; + int len, l; + + len = 0; + ws = (wchar_t *)pwcs; + while (n-- > 0 && (wc = *ws++) != L'\0') + { + l = wcwidth (wc); + if (l < 0) + return (-1); + else if (l == max - len) + return (ws - pwcs); + else if (l > max - len) + return (--ws - pwcs); + len += l; + } + return (ws - pwcs); +} +#endif |