diff options
Diffstat (limited to 'gnulib/lib/mbsspn.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/mbsspn.c | 89 |
2 files changed, 89 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 443bc5ffcf7429e557f4a371b0661abe98ddbc1 diff --git a/gnulib/lib/mbsspn.c b/gnulib/lib/mbsspn.c new file mode 100644 index 0000000..ec8d7fa --- /dev/null +++ b/gnulib/lib/mbsspn.c @@ -0,0 +1,89 @@ +/* Searching a string for a character outside 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 + not in the character string REJECT. 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 +mbsspn (const char *string, const char *reject) +{ + /* Optimize two cases. */ + if (reject[0] == '\0') + return 0; + if (reject[1] == '\0') + { + unsigned char uc = (unsigned char) reject[0]; + + 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 + && (unsigned char) * mbui_cur_ptr (iter) == uc)) + break; + return mbui_cur_ptr (iter) - string; + } + else + { + const char *ptr; + + for (ptr = string; *ptr != '\0'; ptr++) + if ((unsigned char) *ptr != uc) + break; + return ptr - 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 (reject, * mbui_cur_ptr (iter)) == NULL) + goto found; + } + else + { + mbui_iterator_t aiter; + + for (mbui_init (aiter, reject);; mbui_advance (aiter)) + { + if (!mbui_avail (aiter)) + goto found; + if (mb_equal (mbui_cur (aiter), mbui_cur (iter))) + break; + } + } + } + found: + return mbui_cur_ptr (iter) - string; + } + else + return strspn (string, reject); +} |