diff options
| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | lib/uniwidth/u8-width.c | 49 | ||||
| -rw-r--r-- | modules/uniwidth/u8-width | 25 |
3 files changed, 77 insertions, 0 deletions
@@ -1,5 +1,8 @@ 2007-07-07 Bruno Haible <bruno@clisp.org> + * lib/uniwidth/u8-width.c: New file. + * modules/uniwidth/u8-width: New file. + * tests/uniwidth/test-uc_width.c: New file. * modules/uniwidth/width-tests: New file. diff --git a/lib/uniwidth/u8-width.c b/lib/uniwidth/u8-width.c new file mode 100644 index 0000000000..06950a36e1 --- /dev/null +++ b/lib/uniwidth/u8-width.c @@ -0,0 +1,49 @@ +/* Determine display width of UTF-8 string. + Copyright (C) 2001-2002, 2006-2007 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2002. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#include <config.h> + +/* Specification. */ +#include "uniwidth.h" + +#include "unistr.h" + +int +u8_width (const uint8_t *s, size_t n, const char *encoding) +{ + const uint8_t *s_end = s + n; + int width = 0; + + while (s < s_end) + { + ucs4_t uc; + int w; + + s += u8_mbtouc_unsafe (&uc, s, s_end - s); + + 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; +} diff --git a/modules/uniwidth/u8-width b/modules/uniwidth/u8-width new file mode 100644 index 0000000000..e00eb8d994 --- /dev/null +++ b/modules/uniwidth/u8-width @@ -0,0 +1,25 @@ +Description: +Determine display width of UTF-8 string. + +Files: +lib/uniwidth/u8-width.c + +Depends-on: +uniwidth/base +uniwidth/width +unistr/u8-mbtouc-unsafe + +configure.ac: + +Makefile.am: +lib_SOURCES += uniwidth/u8-width.c + +Include: +"uniwidth.h" + +License: +LGPL + +Maintainer: +Bruno Haible + |