Unix and Linux Discussions Tagged with regular expressions |
|
Thread / Thread Starter |
Last Post |
Replies |
Views |
Forum |
|
|
|
409 |
351,906 |
Open Source |
|
|
|
1 |
1,995 |
UNIX for Beginners Questions & Answers |
|
|
|
3 |
1,683 |
Shell Programming and Scripting |
|
|
|
8 |
2,993 |
Shell Programming and Scripting |
|
|
|
2 |
1,990 |
Shell Programming and Scripting |
|
|
|
2 |
4,149 |
Programming |
|
|
|
3 |
8,665 |
Shell Programming and Scripting |
|
|
|
3 |
4,092 |
Shell Programming and Scripting |
|
|
|
3 |
5,792 |
Fedora |
|
|
|
1 |
3,051 |
Shell Programming and Scripting |
|
|
|
11 |
4,323 |
UNIX for Dummies Questions & Answers |
|
|
|
3 |
2,551 |
Programming |
|
|
|
4 |
3,393 |
Programming |
|
|
|
6 |
2,793 |
Shell Programming and Scripting |
|
|
|
1 |
1,965 |
Shell Programming and Scripting |
|
|
|
3 |
9,786 |
Shell Programming and Scripting |
|
|
|
2 |
3,907 |
Shell Programming and Scripting |
|
|
|
9 |
7,926 |
Shell Programming and Scripting |
|
|
|
5 |
3,710 |
Shell Programming and Scripting |
|
|
|
4 |
7,397 |
Shell Programming and Scripting |
|
|
|
4 |
19,984 |
UNIX for Dummies Questions & Answers |
|
|
|
12 |
114,758 |
Shell Programming and Scripting |
|
|
|
13 |
10,752 |
Shell Programming and Scripting |
|
|
|
4 |
2,973 |
Shell Programming and Scripting |
|
|
|
10 |
15,870 |
Shell Programming and Scripting |
|
|
|
3 |
7,897 |
UNIX for Dummies Questions & Answers |
|
|
|
4 |
33,123 |
Shell Programming and Scripting |
|
|
|
3 |
7,123 |
Shell Programming and Scripting |
|
|
|
1 |
3,349 |
Shell Programming and Scripting |
|
|
|
1 |
2,178 |
Shell Programming and Scripting |
|
|
|
8 |
7,550 |
Shell Programming and Scripting |
|
|
|
0 |
1,806 |
UNIX and Linux RSS News |
|
|
|
9 |
22,233 |
Shell Programming and Scripting |
|
|
|
4 |
6,117 |
UNIX and Linux Applications |
|
|
|
9 |
35,315 |
Shell Programming and Scripting |
|
|
|
8 |
19,457 |
Shell Programming and Scripting |
|
|
|
12 |
25,720 |
Shell Programming and Scripting |
|
|
|
9 |
6,001 |
UNIX for Dummies Questions & Answers |
|
|
|
3 |
4,943 |
Shell Programming and Scripting |
|
|
|
5 |
5,167 |
Shell Programming and Scripting |
re_comp(3C) Standard C Library Functions re_comp(3C)
NAME
re_comp, re_exec - compile and execute regular expressions
SYNOPSIS
#include <re_comp.h>
char *re_comp(const char *string);
int re_exec(const char *string);
DESCRIPTION
The re_comp() function converts a regular expression string (RE) into an internal form suitable for pattern matching. The re_exec() func-
tion compares the string pointed to by the string argument with the last regular expression passed to re_comp().
If re_comp() is called with a null pointer argument, the current regular expression remains unchanged.
Strings passed to both re_comp() and re_exec() must be terminated by a null byte, and may include NEWLINE characters.
The re_comp() and re_exec() functions support simple regular expressions, which are defined on the regexp(5) manual page. The regular
expressions of the form {m}, {m,}, or {m,n} are not supported.
RETURN VALUES
The re_comp() function returns a null pointer when the string pointed to by the string argument is successfully converted. Otherwise, a
pointer to one of the following error message strings is returned:
No previous regular expression
Regular expression too long
unmatched (
missing ]
too many () pairs
unmatched )
Upon successful completion, re_exec() returns 1 if string matches the last compiled regular expression. Otherwise, re_exec() returns 0 if
string fails to match the last compiled regular expression, and -1 if the compiled regular expression is invalid (indicating an internal
error).
ERRORS
No errors are defined.
USAGE
For portability to implementations conforming to X/Open standards prior to SUS, regcomp(3C) and regexec(3C) are preferred to these func-
tions. See standards(5).
SEE ALSO
grep(1), regcmp(1), regcmp(3C), regcomp(3C), regexec(3C), regexpr(3GEN), regexp(5), standards(5)
SunOS 5.10 26 Feb 1997 re_comp(3C)