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Diffstat (limited to 'schemas/xml.xsd')
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diff --git a/schemas/xml.xsd b/schemas/xml.xsd new file mode 100644 index 00000000..07d6934f --- /dev/null +++ b/schemas/xml.xsd @@ -0,0 +1,146 @@ +<?xml version='1.0'?> +<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"> + + <xs:annotation> + <xs:documentation> + See http://www.w3.org/XML/1998/namespace.html and + http://www.w3.org/TR/REC-xml for information about this namespace. + + This schema document describes the XML namespace, in a form + suitable for import by other schema documents. + + Note that local names in this namespace are intended to be defined + only by the World Wide Web Consortium or its subgroups. The + following names are currently defined in this namespace and should + not be used with conflicting semantics by any Working Group, + specification, or document instance: + + base (as an attribute name): denotes an attribute whose value + provides a URI to be used as the base for interpreting any + relative URIs in the scope of the element on which it + appears; its value is inherited. This name is reserved + by virtue of its definition in the XML Base specification. + + id (as an attribute name): denotes an attribute whose value + should be interpreted as if declared to be of type ID. + The xml:id specification is not yet a W3C Recommendation, + but this attribute is included here to facilitate experimentation + with the mechanisms it proposes. Note that it is _not_ included + in the specialAttrs attribute group. + + lang (as an attribute name): denotes an attribute whose value + is a language code for the natural language of the content of + any element; its value is inherited. This name is reserved + by virtue of its definition in the XML specification. + + space (as an attribute name): denotes an attribute whose + value is a keyword indicating what whitespace processing + discipline is intended for the content of the element; its + value is inherited. This name is reserved by virtue of its + definition in the XML specification. + + Father (in any context at all): denotes Jon Bosak, the chair of + the original XML Working Group. This name is reserved by + the following decision of the W3C XML Plenary and + XML Coordination groups: + + In appreciation for his vision, leadership and dedication + the W3C XML Plenary on this 10th day of February, 2000 + reserves for Jon Bosak in perpetuity the XML name + xml:Father + </xs:documentation> + </xs:annotation> + + <xs:annotation> + <xs:documentation>This schema defines attributes and an attribute group + suitable for use by + schemas wishing to allow xml:base, xml:lang, xml:space or xml:id + attributes on elements they define. + + To enable this, such a schema must import this schema + for the XML namespace, e.g. as follows: + <schema . . .> + . . . + <import namespace="http://www.w3.org/XML/1998/namespace" + schemaLocation="http://www.w3.org/2001/xml.xsd"/> + + Subsequently, qualified reference to any of the attributes + or the group defined below will have the desired effect, e.g. + + <type . . .> + . . . + <attributeGroup ref="xml:specialAttrs"/> + + will define a type which will schema-validate an instance + element with any of those attributes</xs:documentation> + </xs:annotation> + + <xs:annotation> + <xs:documentation>In keeping with the XML Schema WG's standard versioning + policy, this schema document will persist at + http://www.w3.org/2005/08/xml.xsd. + At the date of issue it can also be found at + http://www.w3.org/2001/xml.xsd. + The schema document at that URI may however change in the future, + in order to remain compatible with the latest version of XML Schema + itself, or with the XML namespace itself. In other words, if the XML + Schema or XML namespaces change, the version of this document at + http://www.w3.org/2001/xml.xsd will change + accordingly; the version at + http://www.w3.org/2005/08/xml.xsd will not change. + </xs:documentation> + </xs:annotation> + + <xs:attribute name="lang"> + <xs:annotation> + <xs:documentation>Attempting to install the relevant ISO 2- and 3-letter + codes as the enumerated possible values is probably never + going to be a realistic possibility. See + RFC 3066 at http://www.ietf.org/rfc/rfc3066.txt and the IANA registry + at http://www.iana.org/assignments/lang-tag-apps.htm for + further information. + + The union allows for the 'un-declaration' of xml:lang with + the empty string.</xs:documentation> + </xs:annotation> + <xs:simpleType> + <xs:union memberTypes="xs:language"> + <xs:simpleType> + <xs:restriction base="xs:string"> + <xs:enumeration value=""/> + </xs:restriction> + </xs:simpleType> + </xs:union> + </xs:simpleType> + </xs:attribute> + + <xs:attribute name="space"> + <xs:simpleType> + <xs:restriction base="xs:NCName"> + <xs:enumeration value="default"/> + <xs:enumeration value="preserve"/> + </xs:restriction> + </xs:simpleType> + </xs:attribute> + + <xs:attribute name="base" type="xs:anyURI"> + <xs:annotation> + <xs:documentation>See http://www.w3.org/TR/xmlbase/ for + information about this attribute.</xs:documentation> + </xs:annotation> + </xs:attribute> + + <xs:attribute name="id" type="xs:ID"> + <xs:annotation> + <xs:documentation>See http://www.w3.org/TR/xml-id/ for + information about this attribute.</xs:documentation> + </xs:annotation> + </xs:attribute> + + <xs:attributeGroup name="specialAttrs"> + <xs:attribute ref="xml:base"/> + <xs:attribute ref="xml:lang"/> + <xs:attribute ref="xml:space"/> + </xs:attributeGroup> + +</xs:schema> |