trusty (3) re_exec.3.gz

NAME

       re_comp, re_exec - BSD regex functions

SYNOPSIS

       #define _REGEX_RE_COMP
       #include <sys/types.h>
       #include <regex.h>

       char *re_comp(char *regex);

       int re_exec(char *string);

DESCRIPTION

       re_comp()  is  used  to compile the null-terminated regular expression pointed to by regex.  The compiled
       pattern occupies a static area, the pattern buffer, which is overwritten by subsequent use of  re_comp().
       If regex is NULL, no operation is performed and the pattern buffer's contents are not altered.

       re_exec()  is  used  to  assess  whether  the  null-terminated  string  pointed  to by string matches the
       previously compiled regex.

RETURN VALUE

       re_comp() returns NULL on  successful  compilation  of  regex  otherwise  it  returns  a  pointer  to  an
       appropriate error message.

       re_exec() returns 1 for a successful match, zero for failure.

ATTRIBUTES

   Multithreading (see pthreads(7))
       The re_comp() and re_exec() functions are not thread-safe.

CONFORMING TO

       4.3BSD.

NOTES

       These functions are obsolete; the functions documented in regcomp(3) should be used instead.

SEE ALSO

       regcomp(3), regex(7), GNU regex manual

COLOPHON

       This  page  is  part  of  release 3.54 of the Linux man-pages project.  A description of the project, and
       information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.