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RE_COMP(3) | Linux Programmer's Manual | RE_COMP(3) |
NAME¶
re_comp, re_exec - BSD regex functionsSYNOPSIS¶
#define _REGEX_RE_COMP#include <sys/types.h>
#include <regex.h>
char *re_comp(const char *regex);
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 |
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 manualCOLOPHON¶
This page is part of release 4.16 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.2017-09-15 | GNU |