diff options
author | Bruno Haible <bruno@clisp.org> | 2011-02-05 13:45:22 +0100 |
---|---|---|
committer | Bruno Haible <bruno@clisp.org> | 2011-02-07 23:36:03 +0100 |
commit | 28fef9da8362f44f2afa96429f23977080f4f4b9 (patch) | |
tree | 9a00fe1e89bc7bbdbab30a4d13d2310d2a4cf130 /lib/wcsnlen-impl.h | |
parent | 023cc5f089abb144d32c9b28f92366d04f06423d (diff) | |
download | gnulib-28fef9da8362f44f2afa96429f23977080f4f4b9.tar.gz |
New module 'wcsnlen'.
* modules/wcsnlen: New file.
* lib/wchar.in.h (wcsnlen): New declaration.
* lib/wcsnlen.c: New file.
* lib/wcsnlen-impl.h: New file, from libutf8 with modifications.
* m4/wcsnlen.m4: New file.
* m4/wchar_h.m4 (gl_WCHAR_H): Test whether wcsnlen is declared.
(gl_WCHAR_H_DEFAULTS): Initialize GNULIB_WCSNLEN, HAVE_WCSNLEN.
* modules/wchar (Makefile.am): Substitute GNULIB_WCSNLEN, HAVE_WCSNLEN.
* tests/test-wchar-c++.cc: Test the declaration of wcsnlen.
* doc/posix-functions/wcsnlen.texi: Mention the new module.
Diffstat (limited to 'lib/wcsnlen-impl.h')
-rw-r--r-- | lib/wcsnlen-impl.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/wcsnlen-impl.h b/lib/wcsnlen-impl.h new file mode 100644 index 0000000000..6cf4d07878 --- /dev/null +++ b/lib/wcsnlen-impl.h @@ -0,0 +1,26 @@ +/* Determine the length of 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/>. */ + +size_t +wcsnlen (const wchar_t *s, size_t maxlen) +{ + const wchar_t *ptr; + + for (ptr = s; maxlen > 0 && *ptr != (wchar_t)'\0'; ptr++, maxlen--) + ; + return ptr - s; +} |