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FunctX XSLT Functions

functx:escape-for-regex

Escapes regex special characters

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Description

The functx:escape-for-regex function escapes a string that you wish to be taken literally rather than treated like a regular expression. This is useful when, for example, you are calling the built-in fn:replace function and you want any periods or parentheses to be treated like literal characters rather than regex special characters.

Arguments and Return Type

NameTypeDescription
$arg xs:string? the string to escape
return value xs:string

XSLT Function Declaration

See XQuery definition.
XSLT 2.0 Syntax:
<xsl:function name="functx:escape-for-regex" as="xs:string"
              xmlns:functx="http://www.functx.com" >
  <xsl:param name="arg" as="xs:string?"/>

  <xsl:sequence select="
   replace($arg,
           '(\.|\[|\]|\\|\||\-|\^|\$|\?|\*|\+|\{|\}|\(|\))','\\$1')
 "/>

</xsl:function>

Examples

XSLT ExampleResults
functx:escape-for-regex('5.55')
5\.55
functx:escape-for-regex('[abc]')
\[abc\]

See Also

fn:replaceReplaces parts of a string that match a regular expression

History

Published OnLast UpdatedContributor(s)
2006-06-272007-02-26Priscilla Walmsley, Datypic, pwalmsley@datypic.com, http://www.datypic.com
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