table of contents
re_comp(3) | Library Functions Manual | re_comp(3) |
NAME¶
re_comp, re_exec - BSD regex functions
LIBRARY¶
Standard C library (libc, -lc)
SYNOPSIS¶
#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);
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¶
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
re_comp (), re_exec () | Thread safety | MT-Unsafe |
STANDARDS¶
None.
HISTORY¶
4.3BSD.
These functions are obsolete; the functions documented in regcomp(3) should be used instead.
SEE ALSO¶
regcomp(3), regex(7), GNU regex manual
2023-03-30 | Linux man-pages 6.04 |