libs/XML_Feed_Parser-1.0.2/schemas/atom.rnc

# -*- rnc -*-
# RELAX NG Compact Syntax Grammar for the
# Atom Format Specification Version 11
namespace atom = "http://www.w3.org/2005/Atom"
namespace xhtml = "http://www.w3.org/1999/xhtml"
namespace s = "http://www.ascc.net/xml/schematron"
namespace local = ""
start = atomFeed | atomEntry
# Common attributes
atomCommonAttributes =
   attribute xml:base { atomUri }?,
   attribute xml:lang { atomLanguageTag }?,
   undefinedAttribute*
# Text Constructs
atomPlainTextConstruct =
   atomCommonAttributes,
   attribute type { "text" | "html" }?,
   text
atomXHTMLTextConstruct =
   atomCommonAttributes,
   attribute type { "xhtml" },
   xhtmlDiv
atomTextConstruct = atomPlainTextConstruct | atomXHTMLTextConstruct
# Person Construct
atomPersonConstruct =
   atomCommonAttributes,
   (element atom:name { text }
    & element atom:uri { atomUri }?
    & element atom:email { atomEmailAddress }?
    & extensionElement*)
# Date Construct
atomDateConstruct =
   atomCommonAttributes,
   xsd:dateTime
# atom:feed
atomFeed =
   [
      s:rule [
         context = "atom:feed"
         s:assert [
            test = "atom:author or not(atom:entry[not(atom:author)])"
            "An atom:feed must have an atom:author unless all "
            ~ "of its atom:entry children have an atom:author."
         ]
      ]
   ]
   element atom:feed {
      atomCommonAttributes,
      (atomAuthor*
       & atomCategory*
       & atomContributor*
       & atomGenerator?
       & atomIcon?
       & atomId
       & atomLink*
       & atomLogo?
       & atomRights?
       & atomSubtitle?
       & atomTitle
       & atomUpdated
       & extensionElement*),
      atomEntry*
   }
# atom:entry
atomEntry =
   [
      s:rule [
         context = "atom:entry"
         s:assert [
            test = "atom:link[@rel='alternate'] "
            ~ "or atom:link[not(@rel)] "
            ~ "or atom:content"
            "An atom:entry must have at least one atom:link element "
            ~ "with a rel attribute of 'alternate' "
            ~ "or an atom:content."
         ]
      ]
      s:rule [
         context = "atom:entry"
         s:assert [
            test = "atom:author or "
            ~ "../atom:author or atom:source/atom:author"
            "An atom:entry must have an atom:author "
            ~ "if its feed does not."
         ]
      ]
   ]
   element atom:entry {
      atomCommonAttributes,
      (atomAuthor*
       & atomCategory*
       & atomContent?
       & atomContributor*
       & atomId
       & atomLink*
       & atomPublished?
       & atomRights?
       & atomSource?
       & atomSummary?
       & atomTitle
       & atomUpdated
       & extensionElement*)
   }
# atom:content
atomInlineTextContent =
   element atom:content {
      atomCommonAttributes,
      attribute type { "text" | "html" }?,
      (text)*
   }
atomInlineXHTMLContent =
   element atom:content {
      atomCommonAttributes,
      attribute type { "xhtml" },
      xhtmlDiv
   }
atomInlineOtherContent =
   element atom:content {
      atomCommonAttributes,
      attribute type { atomMediaType }?,
      (text|anyElement)*
   }
atomOutOfLineContent =
   element atom:content {
      atomCommonAttributes,
      attribute type { atomMediaType }?,
      attribute src { atomUri },
      empty
   }
atomContent = atomInlineTextContent
 | atomInlineXHTMLContent
 | atomInlineOtherContent
 | atomOutOfLineContent
# atom:author
atomAuthor = element atom:author { atomPersonConstruct }
# atom:category
atomCategory =
   element atom:category {
      atomCommonAttributes,
      attribute term { text },
      attribute scheme { atomUri }?,
      attribute label { text }?,
      undefinedContent
   }
# atom:contributor
atomContributor = element atom:contributor { atomPersonConstruct }
# atom:generator
atomGenerator = element atom:generator {
   atomCommonAttributes,
   attribute uri { atomUri }?,
   attribute version { text }?,
   text
}
# atom:icon
atomIcon = element atom:icon {
   atomCommonAttributes,
   (atomUri)
}
# atom:id
atomId = element atom:id {
   atomCommonAttributes,
   (atomUri)
}
# atom:logo
atomLogo = element atom:logo {
   atomCommonAttributes,
   (atomUri)
}
# atom:link
atomLink =
   element atom:link {
      atomCommonAttributes,
      attribute href { atomUri },
      attribute rel { atomNCName | atomUri }?,
      attribute type { atomMediaType }?,
      attribute hreflang { atomLanguageTag }?,
      attribute title { text }?,
      attribute length { text }?,
      undefinedContent
   }
# atom:published
atomPublished = element atom:published { atomDateConstruct }
# atom:rights
atomRights = element atom:rights { atomTextConstruct }
# atom:source
atomSource =
   element atom:source {
      atomCommonAttributes,
      (atomAuthor*
       & atomCategory*
       & atomContributor*
       & atomGenerator?
       & atomIcon?
       & atomId?
       & atomLink*
       & atomLogo?
       & atomRights?
       & atomSubtitle?
       & atomTitle?
       & atomUpdated?
       & extensionElement*)
   }
# atom:subtitle
atomSubtitle = element atom:subtitle { atomTextConstruct }
# atom:summary
atomSummary = element atom:summary { atomTextConstruct }
# atom:title
atomTitle = element atom:title { atomTextConstruct }
# atom:updated
atomUpdated = element atom:updated { atomDateConstruct }
# Low-level simple types
atomNCName = xsd:string { minLength = "1" pattern = "[^:]*" }
# Whatever a media type is, it contains at least one slash
atomMediaType = xsd:string { pattern = ".+/.+" }
# As defined in RFC 3066
atomLanguageTag = xsd:string {
   pattern = "[A-Za-z]{1,8}(-[A-Za-z0-9]{1,8})*"
}
# Unconstrained; it's not entirely clear how IRI fit into
# xsd:anyURI so let's not try to constrain it here
atomUri = text
# Whatever an email address is, it contains at least one @
atomEmailAddress = xsd:string { pattern = ".+@.+" }
# Simple Extension
simpleExtensionElement =
   element * - atom:* {
      text
   }
# Structured Extension
structuredExtensionElement =
   element * - atom:* {
      (attribute * { text }+,
         (text|anyElement)*)
    | (attribute * { text }*,
       (text?, anyElement+, (text|anyElement)*))
   }
# Other Extensibility
extensionElement =
   simpleExtensionElement | structuredExtensionElement
undefinedAttribute =
  attribute * - (xml:base | xml:lang | local:*) { text }
undefinedContent = (text|anyForeignElement)*
anyElement =
   element * {
      (attribute * { text }
       | text
       | anyElement)*
   }
anyForeignElement =
   element * - atom:* {
      (attribute * { text }
       | text
       | anyElement)*
   }
# XHTML
anyXHTML = element xhtml:* {
   (attribute * { text }
    | text
    | anyXHTML)*
}
xhtmlDiv = element xhtml:div {
   (attribute * { text }
    | text
    | anyXHTML)*
}
# EOF