Regular Expression Syntax

There are two types of regular expressions: regex (OS_Regex) and sregex (OS_Match).

Regex (OS_Regex) syntax

This is a fast and simple library for regular expressions in C.

This library is designed to be simple while still supporting the most common regular expressions.

Supported expressions

Expressions	Valid characters
\w	A-Z, a-z, 0-9, ‘-‘, ‘@’ characters
\d	0-9 character
\s	Spaces ” “
\t	Tabs
\p	()*+,-.:;<=>?[]!”’#$%&|{}
\W	Anything not w
\D	Anything not d
\S	Anything not s
\.	Anything

Modifiers

Expressions	Actions
+	To match one or more times
*	To match zero or more times

Special characters

Expressions	Actions
^	To specify the beginning of the text
$	To specify the end of the text
|	To create a logical or between multiple patterns

Characters escaping

To utilize the following characters they must be escaped with: \

$	(	)	\	|
\$	\(	\)	\ \	\|

Sregex (OS_Match) syntax

This is faster than OS_Regex, but only supports simple string matching and the following special characters.

Special characters

Expressions	Actions
^	To specify the beginning of the text
$	To specify the end of the text
|	To create a logic: or, between multiple patterns
!	To negate the expression