From fa095a4504cbe668e4244547e2c141597bea4ecf Mon Sep 17 00:00:00 2001 From: Andreas Rottmann Date: Mon, 14 Sep 2009 12:32:44 +0200 Subject: Imported Upstream version 0.9.1 --- lib/uniwidth/u32-width.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 lib/uniwidth/u32-width.c (limited to 'lib/uniwidth/u32-width.c') diff --git a/lib/uniwidth/u32-width.c b/lib/uniwidth/u32-width.c new file mode 100644 index 00000000..f928fa45 --- /dev/null +++ b/lib/uniwidth/u32-width.c @@ -0,0 +1,43 @@ +/* Determine display width of UTF-32 string. + Copyright (C) 2001-2002, 2006 Free Software Foundation, Inc. + Written by Bruno Haible , 2002. + + This program 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 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 + 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 . */ + +#include + +/* Specification. */ +#include "uniwidth.h" + +int +u32_width (const uint32_t *s, size_t n, const char *encoding) +{ + const uint32_t *s_end = s + n; + int width = 0; + + while (s < s_end) + { + ucs4_t uc = *s++; + int w; + + if (uc == 0) + break; /* end of string reached */ + + w = uc_width (uc, encoding); + if (w >= 0) /* ignore control characters in the string */ + width += w; + } + + return width; +} -- cgit v1.2.3