Re: [xsl] XSLT program that generates XSD, the XSD has a pattern facet, the regex has curly braces, the curly braces are causing me trouble

["David Carlisle d.p.carlisle@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

you can avoid putting the string in an attribute value template, as
Syd Bauman just said, or within an AVT use {{ to denote a {

David


On 19 July 2017 at 14:01, Syd Bauman s.bauman@xxxxxxxxxxxxxxxx
<xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> How about using XSLT constructors, so the part of interest is just a
> string?
>
>     <xsl:element name="pattern" namespace="http://www.w3.org/2001/XMLSchema";>
>       <xsl:attribute name="value">
>         <xsl:text>[a-z\{\}]*</xsl:text>
>       </xsl:attribute>
>     </xsl:element>
>
>> I am writing an XSLT program that outputs an XML Schema.
>>
>> The generated XML Schema is to contain a simpleType, with a pattern
>> facet. Its regex is to express: zero or more lowercase letters of
>> the English alphabet, the left curly brace, and the right curly
>> brace:
>>
>> <xs:simpleType name="Stuff">
>>     <xs:restriction base="xs:string">
>>         <xs:pattern value="[a-z\{\}]*" />
>>     </xs:restriction>
>> </xs:simpleType>
>>
>> The curly braces are special symbols in the regex language, so I
>> escaped them: \{ and \}
>>
>> Interestingly, the curly braces are also special symbols in the
>> XSLT language. That's causing me problems.
>>
>> Below is my XSLT program. It doesn't work  - an error is generated because of the curly braces. Note that replacing the curly braces with their character references also failed:
>>
>> <xs:pattern value="[a-z\&#x7B;\ &#x7D;]*" />
>>
>> What's the right way to do this?  /Roger
>>
>> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
>>       xmlns:xs="http://www.w3.org/2001/XMLSchema";
>>       exclude-result-prefixes="xs"
>>       version="2.0">
>>
>>     <xsl:output method="xml" />
>>
>>     <xsl:template match="/">
>>         <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";>
>>             <xs:element name="Test" type="Stuff" />
>>             <xs:simpleType name="Stuff">
>>                 <xs:restriction base="xs:string">
>>                     <xs:pattern value="[a-z\{\}]*" />
>>                 </xs:restriction>
>>             </xs:simpleType>
>>         </xs:schema>
>>     </xsl:template>
>>
>> </xsl:stylesheet>