The matches() function

Smartsite 7.4 - ...

The matches() XPath 2.0 function returns true if the supplied string matches a given regular expression.

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boolean fn:matches(input, string pattern)

Parameters:

input: a node reference or string literal.
string pattern: pattern to match (regular expression).

Example

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<html xmlns="http://www.w3.org/1999/xhtml" xmlns:xf="http://www.w3.org/2002/xforms" xmlns:fn="http://www.w3.org/2005/xpath-functions"> <head> <title>Example</title> <xf:model> <xf:instance> <data xmlns=""> <string>abracadabra</string> </data> </xf:instance> </xf:model> </head> <body> <xf:group> <xf:output value="fn:matches(string, 'bra')" /> <xf:output value="fn:matches('abracadabra', '^a.*a$')" /> <xf:output value="fn:matches(string, '^bra')" /> </xf:group> </body> </html>

XML

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<html xmlns="http://www.w3.org/1999/xhtml" 
 xmlns:xf="http://www.w3.org/2002/xforms" 
 xmlns:fn="http://www.w3.org/2005/xpath-functions">
 <head>
  <title>Example</title>
  <xf:model>
   <xf:instance>
    <data xmlns="">
     <string>abracadabra</string>
    </data>
   </xf:instance>
  </xf:model>
 </head>
 <body>
  <xf:group>
   <xf:output value="fn:matches(string, 'bra')" />
   <xf:output value="fn:matches('abracadabra', '^a.*a$')" />
   <xf:output value="fn:matches(string, '^bra')" />
  </xf:group>
 </body>
</html>

The result will be:

true
true
false

Namespace

This function is available within the XPath 2.0 namespace (http://www.w3.org/2005/xpath-functions).

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