Партнёры:
Хостинг:
re_comp re_exec - regular expression handler
Lb libcompat
The
re_comp ();
function
compiles a string into an internal form suitable for pattern matching.
The
re_exec ();
function
checks the argument string against the last string passed to
re_comp (.);
The
re_comp ();
function
returns 0 if the string
Fa s
was compiled successfully; otherwise a string containing an
error message is returned.
If
re_comp ();
is passed 0 or a null string, it returns without changing the currently
compiled regular expression.
The
re_exec ();
function
returns 1 if the string
Fa s
matches the last compiled regular expression, 0 if the string
Fa s
failed to match the last compiled regular expression, and -1 if the compiled
regular expression was invalid (indicating an internal error).
The strings passed to both
re_comp ();
and
re_exec ();
may have trailing or embedded newline characters;
they are terminated by
NUL s
The regular expressions recognized are described in the manual entry for
ed(1),
given the above difference.
The
re_comp ();
function
returns one of the following strings if an error occurs:
No previous regular expression, Regular expression too long, unmatched \(, missing ], too many \(\) pairs, unmatched \).
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