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List:       xsl-list
Subject:    Re: [xsl] Need an XPath expression which checks that all commas are escaped
From:       "Dimitre Novatchev dnovatchev () gmail ! com" <xsl-list-service () lists ! mulberrytech ! co
Date:       2017-11-04 15:35:47
Message-ID: 20171104113508.64469 () lists ! mulberrytech ! com
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>> not(contains(replace(., '\\,', ''), ','))
>
> If \ is escaped with \\ then "\\," should be "\\\," so you might need
> to remove all \\ occurrences first i think (although this wasn't
> mentioned in the problem statement)
>
> Liam



Yes, and it would become:

not(contains(replace(replace(., '\\\\', ''), '\\,', ''), ','))

but after Michael Kay's solution on xml-dev yesterday, this is old news.


Cheers,
Dimitre

On Sat, Nov 4, 2017 at 5:51 AM, Liam R. E. Quin liam@w3.org
<xsl-list-service@lists.mulberrytech.com> wrote:
> On Fri, 2017-11-03 at 19:05 +0000, Dimitre Novatchev
> dnovatchev@gmail.com wrote:
>> not(contains(replace(., '\\,', ''), ','))
>
> If \ is escaped with \\ then "\\," should be "\\\," so you might need
> to remove all \\ occurrences first i think (although this wasn't
> mentioned in the problem statement)
>
> Liam
>
>>
>>
>>
>> On Fri, Nov 3, 2017 at 11:02 AM, Costello, Roger L. costello@mitre.or
>> g
>> <xsl-list-service@lists.mulberrytech.com> wrote:
>> > Hi Folks,
>> >
>> > I need an XPath 2.0 expression for this:
>> >
>> >         Check that each comma in the <value>
>> >         element is escaped with a backslash.
>> >
>> > Examples:
>> >
>> > This is good:
>> >
>> > <value>A\, B</value>
>> >
>> > This is bad:
>> >
>> > <value>A, B</value>
>> >
>> > This is also bad, because one comma is escaped but the other is
>> > not:
>> >
>> > <value>A\, B, C</value>
>> >
>> > I created an XPath expression to see if the text is good:
>> >
>> > tokenize(text(), ',')[position() lt last()][ends-with(., '\')]
>> >
>> > I think that is correct. Is there a simpler XPath expression to
>> > solve this?
>> >
>> > /Roger
>> >
>>
>>
>>
> --
> Liam Quin, W3C, http://www.w3.org/People/Quin/
> Staff contact for Verifiable Claims WG, SVG WG, XQuery WG
>
> Web slave for http://www.fromoldbooks.org/
> 



-- 
Cheers,
Dimitre Novatchev
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