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Diffstat (limited to 'src/grep/src/search.h')
-rw-r--r-- | src/grep/src/search.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/grep/src/search.h b/src/grep/src/search.h new file mode 100644 index 0000000..4853583 --- /dev/null +++ b/src/grep/src/search.h @@ -0,0 +1,89 @@ +/* search.c - searching subroutines using dfa, kwset and regex for grep. + Copyright 1992, 1998, 2000, 2007, 2009-2021 Free Software Foundation, Inc. + + 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, 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, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA + 02110-1301, USA. */ + +#ifndef GREP_SEARCH_H +#define GREP_SEARCH_H 1 + +#include <config.h> + +#include <sys/types.h> +#include <stdint.h> +#include <wchar.h> +#include <wctype.h> +#include <regex.h> + +#include "system.h" +#include "grep.h" +#include "dfa.h" +#include "kwset.h" +#include "xalloc.h" +#include "localeinfo.h" + +_GL_INLINE_HEADER_BEGIN +#ifndef SEARCH_INLINE +# define SEARCH_INLINE _GL_INLINE +#endif + +/* This must be a signed type. Each value is the difference in the size + of a character (in bytes) induced by converting to lower case. + The vast majority of values are 0, but a few are 1 or -1, so + technically, two bits may be sufficient. */ +typedef signed char mb_len_map_t; + +/* searchutils.c */ +extern void wordinit (void); +extern kwset_t kwsinit (bool); +extern size_t wordchars_size (char const *, char const *) _GL_ATTRIBUTE_PURE; +extern size_t wordchar_next (char const *, char const *) _GL_ATTRIBUTE_PURE; +extern size_t wordchar_prev (char const *, char const *, char const *) + _GL_ATTRIBUTE_PURE; +extern ptrdiff_t mb_goback (char const **, size_t *, char const *, + char const *); + +/* dfasearch.c */ +extern void *GEAcompile (char *, size_t, reg_syntax_t, bool); +extern size_t EGexecute (void *, char const *, size_t, size_t *, char const *); + +/* kwsearch.c */ +extern void *Fcompile (char *, size_t, reg_syntax_t, bool); +extern size_t Fexecute (void *, char const *, size_t, size_t *, char const *); + +/* pcresearch.c */ +extern void *Pcompile (char *, size_t, reg_syntax_t, bool); +extern size_t Pexecute (void *, char const *, size_t, size_t *, char const *); + +/* grep.c */ +extern struct localeinfo localeinfo; +extern void fgrep_to_grep_pattern (char **, size_t *); + +/* Return the number of bytes in the character at the start of S, which + is of size N. N must be positive. MBS is the conversion state. + This acts like mbrlen, except it returns 1 when mbrlen would return 0, + and it is typically faster because of the cache. */ +SEARCH_INLINE size_t +mb_clen (char const *s, size_t n, mbstate_t *mbs) +{ + size_t len = localeinfo.sbclen[to_uchar (*s)]; + return len == (size_t) -2 ? mbrlen (s, n, mbs) : len; +} + +extern char const *input_filename (void); + +_GL_INLINE_HEADER_END + +#endif /* GREP_SEARCH_H */ |