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-- pagebreak.lua
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-- Converts explicit page break markers into format-specific page breaks.
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local DOCX_PAGEBREAK = [[
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<w:p>
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  <w:r>
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    <w:br w:type="page"/>
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  </w:r>
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</w:p>
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]]
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local HTML_PAGEBREAK = '<div style="page-break-before: always;"></div>'
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local function is_pagebreak(el)
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  return (
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    (el.t == "RawBlock" and el.format == "tex" and (el.text == "\\newpage" or el.text == "\\pagebreak")) or
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    (el.t == "Para" and #el.content == 1 and el.content[1].t == "Str" and el.content[1].text == "\f")
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  )
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end
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function RawBlock(el)
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  if el.format == "tex" and (el.text == "\\newpage" or el.text == "\\pagebreak") then
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    if FORMAT == "docx" or FORMAT == "openxml" then
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      return pandoc.RawBlock("openxml", DOCX_PAGEBREAK)
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    elseif FORMAT == "epub" or FORMAT == "epub3" or FORMAT == "html" or FORMAT == "html5" then
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      return pandoc.RawBlock("html", HTML_PAGEBREAK)
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    end
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  end
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end
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function Para(el)
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  if is_pagebreak(el) then
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    if FORMAT == "docx" or FORMAT == "openxml" then
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      return pandoc.RawBlock("openxml", DOCX_PAGEBREAK)
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    elseif FORMAT == "epub" or FORMAT == "epub3" or FORMAT == "html" or FORMAT == "html5" then
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      return pandoc.RawBlock("html", HTML_PAGEBREAK)
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    end
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  end
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end