xref: /freebsd/contrib/less/regexp.h (revision d7d962ead0b6e5e8a39202d0590022082bf5bfb6)
1 /*
2  * Definitions etc. for regexp(3) routines.
3  *
4  * Caveat:  this is V8 regexp(3) [actually, a reimplementation thereof],
5  * not the System V one.
6  */
7 
8 #ifndef _REGEXP
9 #define _REGEXP 1
10 
11 #define NSUBEXP  10
12 typedef struct regexp {
13         char *startp[NSUBEXP];
14         char *endp[NSUBEXP];
15         char regstart;          /* Internal use only. */
16         char reganch;           /* Internal use only. */
17         char *regmust;          /* Internal use only. */
18         int regmlen;            /* Internal use only. */
19         char program[1];        /* Unwarranted chumminess with compiler. */
20 } regexp;
21 
22 #if defined(__STDC__) || defined(__cplusplus)
23 #   define _ANSI_ARGS_(x)       x
24 #else
25 #   define _ANSI_ARGS_(x)       ()
26 #endif
27 
28 extern regexp *regcomp _ANSI_ARGS_((char *exp));
29 extern int regexec _ANSI_ARGS_((regexp *prog, char *string));
30 extern int regexec2 _ANSI_ARGS_((regexp *prog, char *string, int notbol));
31 extern void regsub _ANSI_ARGS_((regexp *prog, char *source, char *dest));
32 extern void regerror _ANSI_ARGS_((char *msg));
33 
34 #endif /* REGEXP */
35