diff options
Diffstat (limited to 'misc/regexp.c')
-rw-r--r-- | misc/regexp.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/misc/regexp.c b/misc/regexp.c new file mode 100644 index 0000000..34019ae --- /dev/null +++ b/misc/regexp.c @@ -0,0 +1,76 @@ +/* Define function and variables for the obsolete <regexp.h> interface. + Copyright (C) 1996 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. + + The GNU C Library 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 of the + License, or (at your option) any later version. + + The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#define __DO_NOT_DEFINE_COMPILE +#include <regexp.h> + +/* Define the variables used for the interface. */ +char *loc1; +char *loc2; + +/* Although we do not support the use we define this variable as well. */ +char *locs; + + +/* Find the next match in STRING. The compiled regular expression is + found in the buffer starting at EXPBUF. `loc1' will return the + first character matched and `loc2' points to the next unmatched + character. */ +int +__step (const char *string, const char *expbuf) +{ + regmatch_t match; /* We only need info about the full match. */ + + expbuf += __alignof (regex_t *); + expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *); + + if (regexec ((regex_t *) expbuf, string, 1, &match, REG_NOTEOL) + == REG_NOMATCH) + return 0; + + loc1 = (char *) string + match.rm_so; + loc2 = (char *) string + match.rm_eo; + return 1; +} +weak_alias (__step, step) + + +/* Match the beginning of STRING with the compiled regular expression + in EXPBUF. If the match is successful `loc2' will contain the + position of the first unmatched character. */ +int +__advance (const char *string, const char *expbuf) +{ + regmatch_t match; /* We only need info about the full match. */ + + expbuf += __alignof__ (regex_t *); + expbuf -= (expbuf - ((const char *) 0)) % __alignof__ (regex_t *); + + if (regexec ((regex_t *) expbuf, string, 1, &match, REG_NOTEOL) + == REG_NOMATCH + /* We have to check whether the check is at the beginning of the + buffer. */ + || match.rm_so != 0) + return 0; + + loc2 = (char *) string + match.rm_eo; + return 1; +} +weak_alias (__advance, advance) |