[MAN] re_comp

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RE_COMP

Section: Linux Programmer's Manual (3)
Updated: 2017-09-15
Index Return to Main Contents

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NAME

re_comp, re_exec - BSD regex functions  

SYNOPSIS

#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 manual  

COLOPHON

This page is part of release 4.15 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/.

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

ATTRIBUTES

CONFORMING TO

NOTES

SEE ALSO

COLOPHON

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