# Copyright 2022 Gentoo Authors
# Distributed under the terms of the MIT license
# or the CC-BY-SA-4.0 license (dual-licensed)

# RELAX NG schema for the Gentoo Devmanual
# Based on common.dtd from GuideXML

block.class = p | pre | codesample | note | important | warning | todo
| figure | table | ul | ol | dl
attrib.class = text | b | c | e
inline.class = attrib.class | d | uri

attrib = attrib.class*
inline = inline.class*
all = (block.class | inline.class)*

start = guide

guide = element guide {
  (attribute root { "true" } | attribute self { text }),
  chapter,
  \include*
}

\include = element include { attribute href { text } }

chapter = element chapter { title, (body | section), section* }
section = element section { title, (body | subsection), subsection* }
subsection =
  element subsection { title, (body | subsubsection), subsubsection* }
subsubsection = element subsubsection { title, body }

# Title texts are used as anchors, so allow only text attributes
title = element title { attrib }

body = element body { (authors | contentsTree | block.class)+ }

authors = element authors { author+ | authorlist+ }

author = element author {
  attribute name { text },
  attribute email { text }?,
  inline
}

authorlist = element authorlist {
  attribute title { text },
  attribute href { text }
}

contentsTree = element contentsTree {
  attribute maxdepth { xsd:unsignedInt }?,
  attribute root { text }?,
  attribute extraction { text }?
}

p = element p { inline }

pre = element pre { text }

codesample = element codesample {
  attribute lang { "c" | "ebuild" | "make" | "m4" | "sgml" },
  attribute numbering { "lines" }?,
  text
}

note = element note { inline }
important = element important { inline }
warning = element warning { inline }
todo = element todo { inline }

figure = element figure {
  attribute link { text },
  attribute short { text }?,
  attribute caption { text }?
}

table = element table { tr+ }
tr = element tr { (th | ti)+ }

th = element th {
  attribute colspan { xsd:unsignedInt }?,
  attribute rowspan { xsd:unsignedInt }?,
  attribute align { "left" | "center" | "right" }?,
  inline
}

ti = element ti {
  attribute colspan { xsd:unsignedInt }?,
  attribute rowspan { xsd:unsignedInt }?,
  attribute nowrap { "nowrap" }?,
  attribute align { "left" | "center" | "right" }?,
  all
}

ul = element ul { attribute class { "list-group" }?, li+ }
ol = element ol { li+ }
li = element li { all }

dl = element dl { (dt | dd)+ }
dt = element dt { inline }
dd = element dd { all }

b = element b { inline }
c = element c { inline }
e = element e { inline }
d = element d { empty }

uri = element uri {
  # uri can have either an URI in the body text or a link attribute
  xsd:anyURI
  | (attribute link { text }, inline)
}