net/ipv4/netfilter/regexp/regexp.h

   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_H
   9 #define REGEXP_H
  10
  11
  12 /*
  13 http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
  14 which contains a version of this library, says:
  15
  16  *
  17  * NSUBEXP must be at least 10, and no greater than 117 or the parser
  18  * will not work properly.
  19  *
  20
  21 However, it looks rather like this library is limited to 10.  If you think
  22 otherwise, let us know.
  23 */
  24
  25 #define NSUBEXP  10
  26 typedef struct regexp {
  27         char *startp[NSUBEXP];
  28         char *endp[NSUBEXP];
  29         char regstart;          /* Internal use only. */
  30         char reganch;           /* Internal use only. */
  31         char *regmust;          /* Internal use only. */
  32         int regmlen;            /* Internal use only. */
  33         char program[1];        /* Unwarranted chumminess with compiler. */
  34 } regexp;
  35
  36 regexp * regcomp(char *exp, int *patternsize);
  37 int regexec(regexp *prog, char *string);
  38 void regsub(regexp *prog, char *source, char *dest);
  39 void regerror(char *s);
  40
  41 #endif