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<?xml version="1.0"?>

<!--

file      : examples/cxx/parser/wildcard/email.xsd
author    : Boris Kolpackov <boris@codesynthesis.com>
copyright : not copyrighted - public domain

-->

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:eml="http://www.codesynthesis.com/email"
            targetNamespace="http://www.codesynthesis.com/email">

  <!-- Predefined envolop body types. -->

  <xsd:element name="text" type="xsd:string"/>

  <xsd:complexType name="binary">
    <xsd:simpleContent>
      <xsd:extension base="xsd:base64Binary">
        <xsd:attribute name="name" type="xsd:string" use="required"/>
        <xsd:attribute name="mime" type="xsd:string" use="required"/>
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>

  <xsd:element name="binary" type="eml:binary"/>

  <!-- Predefined envelop attributes. -->

  <xsd:attribute name="thread-id" type="xsd:unsignedInt"/>


  <xsd:complexType name="envelope">
    <xsd:sequence>
      <xsd:element name="to" type="xsd:string"/>
      <xsd:element name="from" type="xsd:string"/>
      <xsd:element name="subject" type="xsd:string"/>

      <!-- Extensible envelope body. -->

      <xsd:any namespace="##targetNamespace" processContents="strict"
               maxOccurs="unbounded" />
    </xsd:sequence>
    <xsd:anyAttribute namespace="##targetNamespace" processContents="strict"/>
  </xsd:complexType>

  <xsd:element name="message" type="eml:envelope"/>

</xsd:schema>