atom.xsd

<?xml version="1.0" encoding="UTF-8"?>
<!--
  -*- rnc -*-
  RELAX NG Compact Syntax Grammar for the
  Atom Format Specification Version 11
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/2005/Atom" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:opds="http://opds-spec.org/2010/catalog" xmlns:atom="http://www.w3.org/2005/Atom">
  <xs:import namespace="http://opds-spec.org/2010/catalog" schemaLocation="opds.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xhtml" schemaLocation="xhtml.xsd"/>
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/>
  <!-- Common attributes -->
  <xs:attributeGroup name="atomCommonAttributes">
    <xs:attribute ref="xml:base"/>
    <xs:attribute ref="xml:lang"/>
    <xs:attributeGroup ref="opds:undefinedAttribute"/>
  </xs:attributeGroup>
  <!-- Text Constructs -->
  <xs:attributeGroup name="atomPlainTextConstruct">
    <xs:attributeGroup ref="atom:atomCommonAttributes"/>
    <xs:attribute name="type">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="text"/>
          <xs:enumeration value="html"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
  <xs:element name="atomXHTMLTextConstruct" abstract="true">
    <xs:complexType mixed="true">
      <xs:group minOccurs="0" maxOccurs="unbounded" ref="atom:anyXHTML"/>
      <xs:anyAttribute processContents="skip"/>
    </xs:complexType>
  </xs:element>
  <xs:attributeGroup name="atomXHTMLTextConstruct">
    <xs:attributeGroup ref="atom:atomCommonAttributes"/>
    <xs:attribute name="type" use="required">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="xhtml"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:attributeGroup>
  <xs:complexType name="atomTextConstruct" mixed="true">
    <xs:sequence>
      <xs:element minOccurs="0" ref="atom:atomXHTMLTextConstruct"/>
    </xs:sequence>
    <xs:attribute name="type">
      <xs:simpleType>
        <xs:restriction base="xs:token">
          <xs:enumeration value="text"/>
          <xs:enumeration value="html"/>
          <xs:enumeration value="xhtml"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attributeGroup ref="atom:atomCommonAttributes"/>
  </xs:complexType>
  <!-- Person Construct -->
  <xs:complexType name="atomPersonConstruct">
    <xs:choice minOccurs="0" maxOccurs="unbounded">
      <xs:element ref="atom:name"/>
      <xs:element ref="atom:uri"/>
      <xs:element ref="atom:email"/>
      <xs:group ref="atom:extensionElement"/>
    </xs:choice>
    <xs:attributeGroup ref="atom:atomCommonAttributes"/>
  </xs:complexType>
  <xs:element name="name" type="xs:string"/>
  <xs:element name="uri" type="opds:atomUri"/>
  <xs:element name="email" type="atom:atomEmailAddress"/>
  <!-- Date Construct -->
  <xs:complexType name="atomDateConstruct">
    <xs:simpleContent>
      <xs:extension base="xs:dateTime">
        <xs:attributeGroup ref="atom:atomCommonAttributes"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
  <!-- atom:feed -->
  <xs:element name="feed">
    <xs:complexType>
      <xs:sequence>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:element ref="atom:author"/>
          <xs:element ref="atom:category"/>
          <xs:element ref="atom:contributor"/>
          <xs:element ref="atom:generator"/>
          <xs:element ref="atom:icon"/>
          <xs:element ref="atom:id"/>
          <xs:element ref="atom:link"/>
          <xs:element ref="atom:logo"/>
          <xs:element ref="atom:rights"/>
          <xs:element ref="atom:subtitle"/>
          <xs:element ref="atom:title"/>
          <xs:element ref="atom:updated"/>
          <xs:group ref="atom:extensionElement"/>
        </xs:choice>
        <xs:element minOccurs="0" maxOccurs="unbounded" ref="atom:entry"/>
      </xs:sequence>
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
    </xs:complexType>
  </xs:element>
  <!-- atom:entry -->
  <xs:element name="entry">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element ref="atom:author"/>
        <xs:element ref="atom:category"/>
        <xs:group ref="atom:atomContent"/>
        <xs:element ref="atom:contributor"/>
        <xs:element ref="atom:id"/>
        <xs:element ref="atom:link"/>
        <xs:element ref="atom:published"/>
        <xs:element ref="atom:rights"/>
        <xs:element ref="atom:source"/>
        <xs:element ref="atom:summary"/>
        <xs:element ref="atom:title"/>
        <xs:element ref="atom:updated"/>
        <xs:group ref="atom:extensionElement"/>
      </xs:choice>
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
    </xs:complexType>
  </xs:element>
  <!-- atom:content -->
  <xs:group name="atomInlineTextContent">
    <xs:sequence>
      <xs:element name="content">
        <xs:complexType mixed="true">
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
          <xs:attribute name="type">
            <xs:simpleType>
              <xs:restriction base="xs:token">
                <xs:enumeration value="text"/>
                <xs:enumeration value="html"/>
              </xs:restriction>
            </xs:simpleType>
          </xs:attribute>
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:group>
  <xs:group name="atomInlineXHTMLContent">
    <xs:sequence>
      <xs:element name="content">
        <xs:complexType>
          <xs:sequence>
            <xs:element ref="xhtml:div"/>
          </xs:sequence>
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
          <xs:attribute name="type" use="required">
            <xs:simpleType>
              <xs:restriction base="xs:token">
                <xs:enumeration value="xhtml"/>
              </xs:restriction>
            </xs:simpleType>
          </xs:attribute>
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:group>
  <xs:group name="atomInlineOtherContent">
    <xs:sequence>
      <xs:element name="content">
        <xs:complexType mixed="true">
          <xs:group minOccurs="0" maxOccurs="unbounded" ref="atom:anyElement"/>
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
          <xs:attribute name="type" type="atom:atomMediaType"/>
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:group>
  <xs:group name="atomOutOfLineContent">
    <xs:sequence>
      <xs:element name="content">
        <xs:complexType>
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
          <xs:attribute name="type" type="atom:atomMediaType"/>
          <xs:attribute name="src" use="required" type="opds:atomUri"/>
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:group>
  <xs:group name="atomContent">
    <xs:choice>
      <xs:group ref="atom:atomInlineTextContent"/>
      <xs:group ref="atom:atomInlineXHTMLContent"/>
      <xs:group ref="atom:atomInlineOtherContent"/>
      <xs:group ref="atom:atomOutOfLineContent"/>
    </xs:choice>
  </xs:group>
  <!-- atom:author -->
  <xs:element name="author" type="atom:atomPersonConstruct"/>
  <!-- atom:category -->
  <xs:element name="category">
    <xs:complexType>
      <xs:complexContent>
        <xs:extension base="atom:undefinedContent">
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
          <xs:attribute name="term" use="required"/>
          <xs:attribute name="scheme" type="opds:atomUri"/>
          <xs:attribute name="label"/>
        </xs:extension>
      </xs:complexContent>
    </xs:complexType>
  </xs:element>
  <!-- atom:contributor -->
  <xs:element name="contributor" type="atom:atomPersonConstruct"/>
  <!-- atom:generator -->
  <xs:element name="generator">
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
      <xs:attribute name="uri" type="opds:atomUri"/>
      <xs:attribute name="version"/>
    </xs:complexType>
  </xs:element>
  <!-- atom:icon -->
  <xs:element name="icon">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="opds:atomUri">
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
  <!-- atom:id -->
  <xs:element name="id">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="opds:atomUri">
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
  <!-- atom:logo -->
  <xs:element name="logo">
    <xs:complexType>
      <xs:simpleContent>
        <xs:extension base="opds:atomUri">
          <xs:attributeGroup ref="atom:atomCommonAttributes"/>
        </xs:extension>
      </xs:simpleContent>
    </xs:complexType>
  </xs:element>
  <!-- atom:link -->
  <!-- atom:published -->
  <xs:element name="published" type="atom:atomDateConstruct"/>
  <!-- atom:rights -->
  <xs:element name="rights" type="atom:atomTextConstruct"/>
  <!-- atom:source -->
  <xs:element name="source">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element ref="atom:author"/>
        <xs:element ref="atom:category"/>
        <xs:element ref="atom:contributor"/>
        <xs:element ref="atom:generator"/>
        <xs:element ref="atom:icon"/>
        <xs:element ref="atom:id"/>
        <xs:element ref="atom:link"/>
        <xs:element ref="atom:logo"/>
        <xs:element ref="atom:rights"/>
        <xs:element ref="atom:subtitle"/>
        <xs:element ref="atom:title"/>
        <xs:element ref="atom:updated"/>
        <xs:group ref="atom:extensionElement"/>
      </xs:choice>
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
    </xs:complexType>
  </xs:element>
  <!-- atom:subtitle -->
  <xs:element name="subtitle" type="atom:atomTextConstruct"/>
  <!-- atom:summary -->
  <!-- atom:title -->
  <xs:element name="title" type="atom:atomTextConstruct"/>
  <!-- atom:updated -->
  <xs:element name="updated" type="atom:atomDateConstruct"/>
  <!-- Low-level simple types -->
  <xs:simpleType name="atomNCName">
    <xs:restriction base="xs:string">
      <xs:minLength value="1"/>
      <xs:pattern value="[^:]*"/>
    </xs:restriction>
  </xs:simpleType>
  <!-- Whatever a media type is, it contains at least one slash -->
  <xs:simpleType name="atomMediaType">
    <xs:restriction base="xs:string">
      <xs:pattern value=".+/.+"/>
    </xs:restriction>
  </xs:simpleType>
  <!-- As defined in RFC 3066 -->
  <xs:simpleType name="atomLanguageTag">
    <xs:restriction base="xs:string">
      <xs:pattern value="[A-Za-z]{1,8}(-[A-Za-z0-9]{1,8})*"/>
    </xs:restriction>
  </xs:simpleType>
  <!--
    Unconstrained; it's not entirely clear how IRI fit into
    xsd:anyURI so let's not try to constrain it here
  -->
  <!-- Whatever an email address is, it contains at least one @ -->
  <xs:simpleType name="atomEmailAddress">
    <xs:restriction base="xs:string">
      <xs:pattern value=".+@.+"/>
    </xs:restriction>
  </xs:simpleType>
  <!-- Simple Extension -->
  <xs:group name="simpleExtensionElement">
    <xs:choice>
      <xs:any namespace="##other" processContents="skip"/>
      <xs:any namespace="##local" processContents="skip"/>
    </xs:choice>
  </xs:group>
  <!-- Structured Extension -->
  <xs:group name="structuredExtensionElement">
    <xs:choice>
      <xs:any namespace="##other" processContents="skip"/>
      <xs:any namespace="##local" processContents="skip"/>
    </xs:choice>
  </xs:group>
  <!-- Other Extensibility -->
  <xs:group name="extensionElement">
    <xs:choice>
      <xs:group ref="atom:simpleExtensionElement"/>
      <xs:group ref="atom:structuredExtensionElement"/>
    </xs:choice>
  </xs:group>
  <xs:complexType name="undefinedContent" mixed="true">
    <xs:group minOccurs="0" maxOccurs="unbounded" ref="atom:anyForeignElement"/>
  </xs:complexType>
  <xs:group name="anyElement">
    <xs:sequence>
      <xs:any processContents="skip"/>
    </xs:sequence>
  </xs:group>
  <xs:group name="anyForeignElement">
    <xs:choice>
      <xs:any namespace="##other" processContents="skip"/>
      <xs:any namespace="##local" processContents="skip"/>
    </xs:choice>
  </xs:group>
  <!-- XHTML -->
  <xs:group name="anyXHTML">
    <xs:sequence>
      <xs:any namespace="http://www.w3.org/1999/xhtml" processContents="skip"/>
    </xs:sequence>
  </xs:group>
  <xs:element name="link">
    <xs:complexType mixed="true">
      <xs:sequence>
        <xs:choice minOccurs="0">
          <xs:element maxOccurs="unbounded" ref="opds:price"/>
          <xs:element minOccurs="0" maxOccurs="unbounded" ref="opds:price"/>
        </xs:choice>
        <xs:choice minOccurs="0" maxOccurs="unbounded">
          <xs:element ref="opds:indirectAcquisition"/>
          <xs:group ref="opds:anyOPDSForeignElement"/>
        </xs:choice>
      </xs:sequence>
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
      <xs:attribute name="href" use="required" type="opds:atomUri"/>
      <xs:attribute name="type" type="atom:atomMediaType"/>
      <xs:attribute name="hreflang" type="atom:atomLanguageTag"/>
      <xs:attribute name="title"/>
      <xs:attribute name="length"/>
      <xs:attribute name="rel">
        <xs:simpleType>
          <xs:union memberTypes="opds:OPDSUrisExceptBuy">
            <xs:simpleType>
              <xs:restriction base="xs:token">
                <xs:enumeration value="http://opds-spec.org/facet"/>
              </xs:restriction>
            </xs:simpleType>
            <xs:simpleType>
              <xs:restriction base="xs:token">
                <xs:enumeration value="http://opds-spec.org/acquisition/buy"/>
              </xs:restriction>
            </xs:simpleType>
            <xs:simpleType>
              <xs:union memberTypes="atom:atomNCName opds:atomUriExceptOPDS"/>
            </xs:simpleType>
          </xs:union>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute ref="opds:facetGroup"/>
      <xs:attribute ref="opds:activeFacet"/>
    </xs:complexType>
  </xs:element>
  <xs:element name="summary">
    <xs:complexType mixed="true">
      <xs:attributeGroup ref="atom:atomCommonAttributes"/>
      <xs:attribute name="type">
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:enumeration value="text"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>
</xs:schema>
<!-- EOF -->

xhtml.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:opds="http://opds-spec.org/2010/catalog" xmlns:atom="http://www.w3.org/2005/Atom">
  <xs:import namespace="http://opds-spec.org/2010/catalog" schemaLocation="opds.xsd"/>
  <xs:import namespace="http://www.w3.org/2005/Atom" schemaLocation="atom.xsd"/>
  <xs:import namespace="http://www.w3.org/XML/1998/namespace" schemaLocation="xml.xsd"/>
  <xs:element name="div" substitutionGroup="atom:atomXHTMLTextConstruct"/>
</xs:schema>

xml.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:opds="http://opds-spec.org/2010/catalog" xmlns:atom="http://www.w3.org/2005/Atom">
  <xs:import namespace="http://opds-spec.org/2010/catalog" schemaLocation="opds.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xhtml" schemaLocation="xhtml.xsd"/>
  <xs:import namespace="http://www.w3.org/2005/Atom" schemaLocation="atom.xsd"/>
  <xs:attribute name="base" type="opds:atomUri"/>
  <xs:attribute name="lang" type="atom:atomLanguageTag"/>
</xs:schema>