Re: Challenge: create xPath 2.0 regular expressions fo

Hi Folks,

I would like to submit a challenge:

Create xPath 2.0 regular expressions for each of the XML Schema
datatypes.

Examples:

  - the xPath expression which corresponds to integer is:
^\s*[+-]?\d+\s*$

  - the xPath expression which corresponds to float is:
^\s*[+-]?\d+([eE]+?\d+)?\s*$

For a float, it could be the following:
^\s*[+-]?(\d*\.\d+|\d+\.\d*)([eE][+-]?\d+)?\s*$|^\s*([+-]INF|NaN)\s*$

Note this branch: ^\s*([+-]INF|NaN)\s*$
It is valid to have this in xslt: xs:float('NaN') or xs:float('+INF').

PS: i did not test the regex above, it may contain errors or omissions.
PS2: this regex also applies to xs:double.

-- Abel Braaksma
  http://www.nuntia.com