diff options
Diffstat (limited to 'gnulib/lib/mbscspn.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/mbscspn.c | 68 |
2 files changed, 68 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/mbscspn.c b/gnulib/lib/mbscspn.c new file mode 100644 index 0000000..68ac1c7 --- /dev/null +++ b/gnulib/lib/mbscspn.c @@ -0,0 +1,68 @@ +/* Searching a string for a character among a given set of characters. + Copyright (C) 1999, 2002, 2006-2011 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2007. + + 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/>. */ + +#include <config.h> + +/* Specification. */ +#include <string.h> + +#include "mbuiter.h" + +/* Find the first occurrence in the character string STRING of any character + in the character string ACCEPT. Return the number of bytes from the + beginning of the string to this occurrence, or to the end of the string + if none exists. */ +size_t +mbscspn (const char *string, const char *accept) +{ + /* Optimize two cases. */ + if (accept[0] == '\0') + return strlen (string); + if (accept[1] == '\0') + { + const char *ptr = mbschr (string, accept[0]); + return (ptr != NULL ? ptr - string : strlen (string)); + } + /* General case. */ + if (MB_CUR_MAX > 1) + { + mbui_iterator_t iter; + + for (mbui_init (iter, string); mbui_avail (iter); mbui_advance (iter)) + { + if (mb_len (mbui_cur (iter)) == 1) + { + if (mbschr (accept, * mbui_cur_ptr (iter))) + goto found; + } + else + { + mbui_iterator_t aiter; + + for (mbui_init (aiter, accept); + mbui_avail (aiter); + mbui_advance (aiter)) + if (mb_equal (mbui_cur (aiter), mbui_cur (iter))) + goto found; + } + } + found: + return mbui_cur_ptr (iter) - string; + } + else + return strcspn (string, accept); +} |