re_comp
Section: C Library Functions (3)
Updated: 2022-12-15
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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
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
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- STANDARDS
-
- NOTES
-
- SEE ALSO
-
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