diff options
Diffstat (limited to 'gnulib/lib/wcswidth-impl.h')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/wcswidth-impl.h | 43 |
2 files changed, 43 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/wcswidth-impl.h b/gnulib/lib/wcswidth-impl.h new file mode 100644 index 0000000..865390c --- /dev/null +++ b/gnulib/lib/wcswidth-impl.h @@ -0,0 +1,43 @@ +/* Determine number of screen columns needed for a size-bounded wide string. + Copyright (C) 1999, 2011 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 1999. + + This program 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. + + This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ + +int +wcswidth (const wchar_t *s, size_t n) +{ + int count = 0; + for (; n > 0; s++, n--) + { + wchar_t c = *s; + if (c == (wchar_t)'\0') + break; + { + int width = wcwidth (c); + if (width < 0) + goto found_nonprinting; + if (width > INT_MAX - count) + goto overflow; + count += width; + } + } + return count; + + found_nonprinting: + return -1; + + overflow: + return INT_MAX; +} |