diff options
Diffstat (limited to 'gnulib/lib/mbsrchr.c')
m--------- | gnulib | 0 | ||||
-rw-r--r-- | gnulib/lib/mbsrchr.c | 49 |
2 files changed, 49 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/lib/mbsrchr.c b/gnulib/lib/mbsrchr.c new file mode 100644 index 00000000..d956e22a --- /dev/null +++ b/gnulib/lib/mbsrchr.c @@ -0,0 +1,49 @@ +/* Searching a string for the last occurrence of a character. + Copyright (C) 2007-2010 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" + +/* Locate the last single-byte character C in the character string STRING, + and return a pointer to it. Return NULL if C is not found in STRING. */ +char * +mbsrchr (const char *string, int c) +{ + if (MB_CUR_MAX > 1 + /* Optimization: We know that ASCII characters < 0x30 don't occur as + part of multibyte characters longer than 1 byte. Hence, if c < 0x30, + the faster unibyte loop can be used. */ + && (unsigned char) c >= 0x30) + { + const char *result = NULL; + 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) == (unsigned char) c) + result = mbui_cur_ptr (iter); + } + return (char *) result; + } + else + return strrchr (string, c); +} |