Looping in schematron

This should cover W3C XML Schema, Relax NG and DTD related problems.
Posts: 121

Looping in schematron

Tue May 10, 2016 9:12 am

Hi team,

I would like to create a schematron rule which can be looped through the element content. The need is that I need to check the number of characters before a line break and should loop through the content finding next line break. This is for pre-formatted elements. The warning is for adding more number of characters in a line than allowed.

I have done below coding but it works only for one line break:

Code: Select all

        <rule id="1" context="*[contains(@class,'- topic/pre ')]">   
            <assert test="string-length(substring-before(.,'&#10;')) &lt; 50 " role="warning"> Do not exceed number of characters in a line in pre than 50

Please let me know if you have a way forward for me on this

Posts: 160

Re: Looping in schematron

Tue May 10, 2016 12:39 pm

Hi Shabeer,

You need to determine each line of text from your "pre" element and check its length. I have created a sample for you using XSLT to determine the lines of text. You can find the sample below:

Code: Select all

<sch:schema xmlns:sch="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2"
        <sch:rule context="*[contains(@class, '- topic/pre ')]">
            <xsl:variable name="offendingLines">
                <xsl:for-each select="tokenize(text(), '&#10;')">
                    <xsl:if test="string-length(current()) > 50">
                        <xsl:value-of select="concat(position(), ', ')"/>
            <sch:report test="string-length($offendingLines) > 0"> Lines (<sch:value-of
                    select="$offendingLines"/>) in pre should not exceed 50 characters.

Best Regards,
Octavian Nadolu
<oXygen/> XML Editor

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