NetIQ Documentation: Operations Center 5.0 F/X Adapter Guide - Regular Expression Constructs

Table E-2 Characters

Construct	Matches
x	The character x.
\\	The backslash character.
\0n	The character with octal value 0n (0 <= n <= 7).
\0nn	The character with octal value 0nn (0 <= n <= 7).
\0mnn	The character with octal value 0mnn (0 <= m <= 3, 0 <= n <= 7).
\xhh	The character with hexadecimal value 0xhh.
\uhhhh	The character with hexadecimal value 0xhhhh.
\t	The tab character ('\u0009').
\n	The newline (line feed) character ('\u000A').
\r	The carriage-return character ('\u000D').
\f	The form-feed character ('\u000C').
\a	The alert (bell) character ('\u0007').
\e	The escape character ('\u001B').
\cx	The control character corresponding to x.

Table E-3 Character Classes

Construct	Matches
[abc]	a, b, or c (simple class).
[^abc]	Any character, except a, b, or c (negation).
[a‑zA‑Z]	a through z, or A through Z, inclusive (range).
[a‑d[m‑p]]	a through d, or m through p: [a‑dm‑p] (union).
[a‑z&&[def]]	d, e, or f (intersection).
[a‑z&&[^bc]]	a through z, except for b and c: [ad‑z] (subtraction).
[a‑z&&[^m‑p]]	a through z, and not m through p: [a‑lq‑z](subtraction).

Table E-4 Predefined Character Classes

Construct	Matches
Any character (could match line terminators).
\d	A digit: [0–9]
\D	A nondigit: [^0–9]
\s	A whitespace character: [ \t\n\x0B\f\r]
\S	A nonwhitespace character: [^\s]
\w	A word character: [a‑zA‑Z_0‑9]
\W	A nonword character: [^\w]

Table E-5 POSIX character classes (US‑ASCII only)

Construct	Matches
\p{Lower}	A lowercase alphabetic character: [a‑z]
\p{Upper}	An uppercase alphabetic character: [A‑Z]
\p{ASCII}	All ASCII: [\x00‑\x7F]
\p{Alpha}	An alphabetic character: [\p{Lower}\p{Upper}]
\p{Digit}	A decimal digit: [0‑9]
\p{Alnum}	An alphanumeric character: [\p{Alpha}\p{Digit}]
\p{Punct}	Punctuation: One of: !"#$%&'()*+,‑./:;<=>?@[\]^_`{\|}~
\p{Graph}	A visible character: [\p{Alnum}\p{Punct}]
\p{Print}	A printable character: [\p{Graph}\x20]
\p{Blank}	A space or a tab: [ \t]
\p{Cntrl}	A control character: [\x00‑\x1F\x7F]
\p{XDigit}	A hexadecimal digit: [0‑9a‑fA‑F]
\p{Space}	A whitespace character: [ \t\n\x0B\f\r]

Table E-6 Classes for Unicode Blocks and Categories

Construct	Matches
\p{InGreek}	A character in the Greek block (simple block).
\p{Lu}	An uppercase letter (simple category).
\p{Sc}	A currency symbol.
\P{InGreek}	Any character, except one in the Greek block (negation).
[\p{L}&&[^\p{Lu}]]	Any letter, except an uppercase letter (subtraction).

Table E-7 Boundary Matchers

Construct	Matches
^	The beginning of a line.
$	The end of a line.
\b	A word boundary.
\B	A nonword boundary.
\A	The beginning of the input.
\G	The end of the previous match.
\Z	The end of the input, but for the final terminator, if any.
\z	The end of the input.

Table E-8 Greedy quantifiers

Construct	Matches
X?	X, once or not at all.
X*	X, zero or more times.
X+	X, one or more times.
X{n}	X, exactly n times.
X{n,}	X, at least n times.
X{n,m}	X, at least n, but not more than m times.

Table E-9 Reluctant quantifiers

Construct	Matches
X??	X, once or not at all.
X*?	X, zero or more times.
X+?	X, one or more times.
X{n}?	X, exactly n times.
X{n,}?	X, at least n times.
X{n,m}?	X, at least n, but not more than m times.

Table E-10 Possessive quantifiers

Construct	Matches
X?+	X, once or not at all.
X*+	X, zero or more times.
X++	X, one or more times.
X{n}+	X, exactly n times.
X{n,}+	X, at least n times.
X{n,m}+	X, at least n, but not more than m times.

Table E-11 Logical operators

Table E-12 Back references

Construct	Matches
\n	Whatever the n^th capturing group matched.

Table E-13 Quotation

Construct	Matches
\	Nothing, but quotes the following character.
\Q	Nothing, but quotes all characters until \E.
\E	Nothing, but ends quoting started by \Q.

E.2 Regular Expression Constructs