re_comp, re_exec - BSD regex functions
Standard C library (
libc,
-lc)
#define _REGEX_RE_COMP
#include <sys/types.h>
#include <regex.h>
[[deprecated]] char *re_comp(const char *regex);
[[deprecated]] int re_exec(const char *string);
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.
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.
For an explanation of the terms used in this section, see
attributes(7).
| Interface |
Attribute |
Value |
| re_comp (), re_exec () |
Thread safety |
MT-Unsafe |
4.3BSD.
These functions are obsolete; the functions documented in
regcomp(3)
should be used instead.
regcomp(3),
regex(7), GNU regex manual