Cloud Email Gateway
Protection provides the following shorthand for
writing complicated regular expressions. Cloud Email Gateway
Protection will
pre-process expressions and translate the shorthand into regular expressions.
For example, {D}+ would be translated to [0-9]+. If a shorthand expression is enclosed
in
brackets (example: {}) or double-quotes, then Cloud Email Gateway
Protection will
not translate that shorthand expression to a regular expression.
|
SHORTHAND
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DESCRIPTION
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|
{D}
|
[0-9]
|
|
{L}
|
[A-Za-z]
|
|
{SP}
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[(),;\.\\<>@\[\]:]
|
|
{NUMBER}
|
[0-9]+
|
|
{WORD}
|
[A-Za-z]+
|
|
{CR}
|
\r
|
|
{LF}
|
\n
|
|
{LWSP}
|
[ \t]
|
|
{CRLF}
|
(\r\n)
|
|
{WSP}
|
[ \t\f]+
|
|
{ALLC}
|
.
|
Cloud Email Gateway
Protection also provides the following meta-symbols. The
difference between shorthand and meta-symbols is that meta-symbols can be within a
bracket
expression.
|
META-SYMBOL
|
DESCRIPTION
|
|
\s
|
[[:space:]]
|
|
\S
|
[^[:space:]]
|
|
\d
|
[[:digit:]]
|
|
\D
|
[^[:digit:]]
|
|
\w
|
[_[:alnum:]]
|
|
\W
|
[^_[:alnum:]]
|