1 /* Search for patterns in strings or files.
2    Copyright (C) 2005 Free Software Foundation, Inc.
3 
4    This program is free software: you can redistribute it and/or modify
5    it under the terms of the GNU General Public License as published by
6    the Free Software Foundation; either version 3 of the License, or
7    (at your option) any later version.
8 
9    This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU General Public License for more details.
13 
14    You should have received a copy of the GNU General Public License
15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
16 
17 #ifndef _LIBGREP_H
18 #define _LIBGREP_H
19 
20 #include <stdbool.h>
21 #include <stddef.h>
22 
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
28 
29 /* A pattern matcher.  */
30 typedef struct {
31 
32   /* Compile a pattern and return the compiled pattern.  */
33   void * (*compile) (const char *pattern, size_t pattern_size,
34                      bool match_icase, bool match_words, bool match_lines,
35                      char eolbyte);
36 
37   /* Execute a search.  */
38   size_t (*execute) (const void *compiled_pattern,
39                      const char *buf, size_t buf_size,
40                      size_t *match_size, bool exact);
41 
42   /* Free a compiled pattern.  */
43   void (*free) (void *compiled_pattern);
44 
45 } matcher_t;
46 
47 /* The built-in pattern matchers.  */
48 extern matcher_t matcher_grep;   /* POSIX Basic Regular Expressions */
49 extern matcher_t matcher_egrep;  /* POSIX Extended Regular Expressions */
50 extern matcher_t matcher_fgrep;  /* Fixed String search */
51 extern matcher_t matcher_awk;    /* AWK Regular Expressions */
52 
53 
54 #ifdef __cplusplus
55 }
56 #endif
57 
58 
59 #endif /* _LIBGREP_H */
60