Handle asciidoc figures

Author: dragonstyle

src/format/asciidoc/format-asciidoc.ts

@@ -52,6 +52,8 @@ export function asciidocFormat(): Format {
     plaintextFormat("Asciidoc", "adoc"),
     {
       pandoc: {
+        // This is required because Pandoc is wrapping asciidoc images which must be on one line
+        wrap: "none",
         template: formatResourcePath(
           "asciidoc",
           join(

src/resources/filters/crossref/figures.lua

@@ -44,6 +44,8 @@ function processFigure(el, captionContent)
       tprepend(captionContent, {
         pandoc.RawInline('latex', '\\label{' .. label .. '}')
       })
+    elseif _quarto.format.isAsciiDocOutput() then
+      el.attr.identifier = label
     else
       tprepend(captionContent, figureTitlePrefix(order))
     end

src/resources/filters/crossref/refs.lua

@@ -67,6 +67,8 @@ function resolveRefs()
             -- for latex inject a \ref, otherwise format manually
             if _quarto.format.isLatexOutput() then
               ref:extend({pandoc.RawInline('latex', '\\ref{' .. label .. '}')})
+            elseif _quarto.format.isAsciiDocOutput() then
+              ref:extend({pandoc.RawInline('asciidoc', '<<' .. label .. '>>')})
             else
               if not resolve then
                 local refClasses = pandoc.List({"quarto-unresolved-ref"})

src/resources/filters/layout/asciidoc.lua

@@ -0,0 +1,28 @@
+-- asciidoc.lua
+-- Copyright (C) 2020-2022 Posit Software, PBC
+
+function asciidocFigure(image)
+  local renderedCaption = pandoc.write(pandoc.Pandoc({image.caption}))
+  return pandoc.RawBlock("asciidoc", "." .. renderedCaption .. "\n[#" .. image.attr.identifier .. "]\nimage::" .. image.src .. "[]" )
+end
+
+function asciidocDivFigure(el) 
+
+  local figure = pandoc.List({})
+  local id = el.attr.identifier
+  
+  -- append everything before the caption
+  local contents = tslice(el.content, 1, #el.content - 1)
+  
+  -- return the figure and caption
+  local caption = refCaptionFromDiv(el)
+  if not caption then
+    caption = pandoc.Inlines()
+  end
+  local renderedCaption = pandoc.write(pandoc.Pandoc({caption}), "asciidoc")
+
+  figure:insert(pandoc.RawBlock('asciidoc', '.' .. renderedCaption))
+  figure:insert(pandoc.RawBlock('asciidoc', '[#' .. id .. ']\n'))
+  tappend(figure, contents)
+  return figure
+end

src/resources/filters/layout/figures.lua

@@ -14,6 +14,8 @@ function extendedFigures()
           return latexImageFigure(image)
         elseif _quarto.format.isDocxOutput() then
           return wpDivFigure(createFigureDiv(el, image))
+        elseif _quarto.format.isAsciiDocOutput() then
+          return asciidocFigure(image)
         end
       end
     end,
@@ -28,6 +30,8 @@ function extendedFigures()
           return wpDivFigure(el)
         elseif _quarto.format.isJatsOutput() then
           return jatsDivFigure(el)
+        elseif _quarto.format.isAsciiDocOutput() then
+          return asciidocDivFigure(el)
         end
       end
     end

src/resources/filters/main.lua

@@ -84,6 +84,7 @@ import("./normalize/normalize.lua")
 import("./normalize/parsehtml.lua")
 import("./normalize/extractquartodom.lua")
 
+import("./layout/asciidoc.lua")
 import("./layout/meta.lua")
 import("./layout/width.lua")
 import("./layout/latex.lua")

src/resources/pandoc/datadir/_format.lua

@@ -30,6 +30,10 @@ local function isLatexOutput()
   return FORMAT == "latex" or FORMAT == "beamer" or FORMAT == "pdf"
 end
 
+local function isAsciiDocOutput()
+  return FORMAT == "asciidoc"
+end 
+
 local function isBeamerOutput()
   return FORMAT == "beamer"
 end
@@ -193,6 +197,7 @@ end
 
 
 return {
+  isAsciiDocOutput = isAsciiDocOutput,
   isRawHtml = isRawHtml,
   isRawLatex = isRawLatex,
   isFormat = isFormat,