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50 lines
1.7 KiB
XML
50 lines
1.7 KiB
XML
2 years ago
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<?xml version='1.0'?>
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<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en">
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<xs:annotation>
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<xs:documentation>This schema defines attributes and an attribute group
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suitable for use by
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schemas wishing to allow xml:lang or xml:space attributes
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on elements they define.
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To enable this, such a schema must import this schema
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for the XML namespace, e.g. as follows:
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<schema . . .>
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. . .
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<import namespace="http://www.w3.org/XML/1998/namespace"
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schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>
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Subsequently, qualified reference to either of the attributes
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or the group defined below will have the desired effect, e.g.
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<type . . .>
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. . .
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<attributeGroup ref="xml:specialAttrs"/>
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will define a type which will schema-validate a instance
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element with both xml:space and xml:lang attribute</xs:documentation>
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</xs:annotation>
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<xs:attribute name="lang" type="xs:language">
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<xs:annotation>
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<xs:documentation>In due course, we should install the relevant ISO 2- and 3-letter
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codes as the enumerated possible values . . .</xs:documentation>
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</xs:annotation>
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</xs:attribute>
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<xs:attribute name="space" default="preserve">
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<xs:simpleType>
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<xs:restriction base="xs:NCName">
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<xs:enumeration value="default"/>
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<xs:enumeration value="preserve"/>
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</xs:restriction>
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</xs:simpleType>
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</xs:attribute>
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<xs:attributeGroup name="specialAttrs">
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<xs:attribute ref="xml:lang"/>
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<xs:attribute ref="xml:space"/>
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</xs:attributeGroup>
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</xs:schema>
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