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# A RELAX NG schema for Pandoc XML format.
# Copyright : Copyright (C) 2025- Massimiliano Farinella
# License : GNU GPL, version 2 or above
# Maintainer : Massimiliano Farinella <[email protected]>
#
# This is a RELAX NG schema for the XML representation of Pandoc AST.
# It's an equivalent of native and JSON formats, but modeled as XML.
# You can use this schema to validate Pandoc XML documents.
# It's translated from pandoc-xml.dtd with the "Trang" software by James Clark,
# and adjusted manually to add some constraints:
# - elements with Attr can have arbitrary attributes (this is not possible with a DTD)
# - Header's "level", OrderedList's "start" and Cell's "rowspan" and "colspan" attributes
# must be a positive integer and are equal to 1 if not specified
# - column widths in ColSpec must be between 0 and 1 (inclusive, with 0=ColWidthDefault)
# - the "count" attribute in the "<Space>" element must be positive and equal to 1 if not specified
namespace a = "http://relaxng.org/ns/compatibility/annotations/1.0"
Pandoc = element Pandoc { attlist_Pandoc, meta, blocks }
attlist_Pandoc &= attribute api-version { text }
block =
Para
| Plain
| Header
| Div
| BlockQuote
| HorizontalRule
| BulletList
| OrderedList
| DefinitionList
| Table
| Figure
| LineBlock
| CodeBlock
| RawBlock
inline_element =
Str
| Space
| Emph
| Strong
| Underline
| Strikeout
| Superscript
| Subscript
| SmallCaps
| Quoted
| Cite
| Code
| SoftBreak
| LineBreak
| Math
| RawInline
| Link
| Image
| Note
| Span
inline = text | inline_element
attr =
attribute id { xsd:ID }?,
attribute class { text }?,
attribute * { text }*
metavalue =
MetaMap | MetaList | MetaBool | MetaString | MetaInlines | MetaBlocks
meta = element meta { attlist_meta, entry* }
attlist_meta &= empty
MetaMap = element MetaMap { attlist_MetaMap, entry* }
attlist_MetaMap &= empty
entry = element entry { attlist_entry, metavalue* }
attlist_entry &= attribute key { text }
MetaList = element MetaList { attlist_MetaList, metavalue* }
attlist_MetaList &= empty
MetaBool = element MetaBool { attlist_MetaBool, empty }
attlist_MetaBool &= attribute value { "true" | "false" }
MetaString = element MetaString { attlist_MetaString, text }
attlist_MetaString &= empty
MetaInlines = element MetaInlines { attlist_MetaInlines, inline* }
attlist_MetaInlines &= empty
MetaBlocks = element MetaBlocks { attlist_MetaBlocks, block* }
attlist_MetaBlocks &= empty
blocks = element blocks { attlist_blocks, block* }
attlist_blocks &= empty
Para = element Para { attlist_Para, inline* }
attlist_Para &= empty
Plain = element Plain { attlist_Plain, inline* }
attlist_Plain &= empty
Header = element Header { attlist_Header, inline* }
attlist_Header &=
[ a:defaultValue = "1" ] attribute level { xsd:positiveInteger }?,
attr
Div = element Div { attlist_Div, block* }
attlist_Div &= attr
BlockQuote = element BlockQuote { attlist_BlockQuote, block* }
attlist_BlockQuote &= empty
HorizontalRule =
element HorizontalRule { attlist_HorizontalRule, empty }
attlist_HorizontalRule &= empty
BulletList = element BulletList { attlist_BulletList, item+ }
attlist_BulletList &= empty
OrderedList = element OrderedList { attlist_OrderedList, item+ }
attlist_OrderedList &=
[ a:defaultValue = "1" ] attribute start { xsd:positiveInteger }?,
[ a:defaultValue = "DefaultStyle" ]
attribute number-style {
"DefaultStyle"
| "Example"
| "Decimal"
| "LowerRoman"
| "UpperRoman"
| "LowerAlpha"
| "UpperAlpha"
}?,
[ a:defaultValue = "DefaultDelim" ]
attribute number-delim {
"DefaultDelim" | "Period" | "OneParen" | "TwoParens"
}?
DefinitionList =
element DefinitionList { attlist_DefinitionList, item+ }
attlist_DefinitionList &= empty
item =
element item {
attlist_item,
(block* | (term, def+))
}
attlist_item &= empty
term = element term { attlist_term, inline* }
attlist_term &= empty
def = element def { attlist_def, block* }
attlist_def &= empty
Table =
element Table {
attlist_Table, Caption, colspecs, TableHead, TableBody+, TableFoot
}
attlist_Table &= attr
Caption = element Caption { attlist_Caption, ShortCaption?, block* }
attlist_Caption &= empty
ShortCaption = element ShortCaption { attlist_ShortCaption, inline* }
attlist_ShortCaption &= empty
colspecs = element colspecs { attlist_colspecs, ColSpec+ }
attlist_colspecs &= empty
ColSpec = element ColSpec { attlist_ColSpec, empty }
attlist_ColSpec &=
[ a:defaultValue = "AlignDefault" ]
attribute alignment {
"AlignLeft" | "AlignRight" | "AlignCenter" | "AlignDefault"
}?,
[ a:defaultValue = "0" ]
attribute col-width {
xsd:double { minInclusive = "0" maxInclusive = "1" }
}?
TableHead = element TableHead { attlist_TableHead, Row* }
attlist_TableHead &= attr
TableFoot = element TableFoot { attlist_TableFoot, Row* }
attlist_TableFoot &= attr
TableBody = element TableBody { attlist_TableBody, header, body }
attlist_TableBody &=
[ a:defaultValue = "0" ] attribute row-head-columns { text }?,
attr
header = element header { attlist_header, Row* }
attlist_header &= empty
body = element body { attlist_body, Row* }
attlist_body &= empty
Row = element Row { attlist_Row, Cell* }
attlist_Row &= attr
Cell = element Cell { attlist_Cell, block* }
attlist_Cell &=
[ a:defaultValue = "AlignDefault" ]
attribute alignment {
"AlignLeft" | "AlignRight" | "AlignCenter" | "AlignDefault"
}?,
[ a:defaultValue = "1" ] attribute row-span { xsd:positiveInteger }?,
[ a:defaultValue = "1" ] attribute col-span { xsd:positiveInteger }?,
attr
Figure = element Figure { attlist_Figure, Caption, block* }
attlist_Figure &= attr
LineBlock = element LineBlock { attlist_LineBlock, line+ }
attlist_LineBlock &= empty
line = element line { attlist_line, inline* }
attlist_line &= empty
CodeBlock = element CodeBlock { attlist_CodeBlock, text }
attlist_CodeBlock &= attr
RawBlock = element RawBlock { attlist_RawBlock, text }
attlist_RawBlock &= attribute format { text }
Space = element Space { attlist_Space, empty }
attlist_Space &=
[ a:defaultValue = "1" ] attribute count { xsd:positiveInteger }?
Str = element Str { attlist_Str, empty }
attlist_Str &= [ a:defaultValue = "" ] attribute content { text }?
Emph = element Emph { attlist_Emph, inline* }
attlist_Emph &= empty
Strong = element Strong { attlist_Strong, inline* }
attlist_Strong &= empty
Underline = element Underline { attlist_Underline, inline* }
attlist_Underline &= empty
Strikeout = element Strikeout { attlist_Strikeout, inline* }
attlist_Strikeout &= empty
Superscript = element Superscript { attlist_Superscript, inline* }
attlist_Superscript &= empty
Subscript = element Subscript { attlist_Subscript, inline* }
attlist_Subscript &= empty
SmallCaps = element SmallCaps { attlist_SmallCaps, inline* }
attlist_SmallCaps &= empty
Span = element Span { attlist_Span, inline* }
attlist_Span &= attr
Quoted = element Quoted { attlist_Quoted, inline* }
attlist_Quoted &=
[ a:defaultValue = "DoubleQuote" ]
attribute quote-type { "SingleQuote" | "DoubleQuote" }?
Math = element Math { attlist_Math, text }
attlist_Math &=
[ a:defaultValue = "InlineMath" ]
attribute math-type { "DisplayMath" | "InlineMath" }?
RawInline = element RawInline { attlist_RawInline, text }
attlist_RawInline &= attribute format { text }
Cite =
element Cite { attlist_Cite, (text | citations | inline_element)* }
attlist_Cite &= empty
citations = element citations { attlist_citations, Citation+ }
attlist_citations &= empty
Citation = element Citation { attlist_Citation, prefix?, suffix? }
prefix = element prefix { attlist_prefix, inline* }
attlist_prefix &= empty
suffix = element suffix { attlist_suffix, inline* }
attlist_suffix &= empty
attlist_Citation &=
attribute id { text }?,
attribute note-num { text }?,
[ a:defaultValue = "0" ] attribute hash { text }?,
[ a:defaultValue = "AuthorInText" ]
attribute mode {
"AuthorInText" | "SuppressAuthor" | "NormalCitation"
}?
Code = element Code { attlist_Code, text }
attlist_Code &= attr
Image = element Image { attlist_Image, inline* }
attlist_Image &=
attribute title { text }?,
attribute src { text }?,
attr
Link = element Link { attlist_Link, inline* }
attlist_Link &=
attribute title { text }?,
attribute href { text }?,
attr
SoftBreak = element SoftBreak { attlist_SoftBreak, empty }
attlist_SoftBreak &= empty
LineBreak = element LineBreak { attlist_LineBreak, empty }
attlist_LineBreak &= empty
Note = element Note { attlist_Note, block* }
attlist_Note &= empty
start = Pandoc
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