tvl-depot/users/grfn/gws.fyi/orgExportHTML.nix

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{ pkgs, depot, ... }:
with pkgs;
with lib;
let
emacs = pkgs.emacs28;
in
opts:
let
src = if isAttrs opts then opts.src else opts;
headline = if isAttrs opts then opts.headline else null;
bn = builtins.baseNameOf src;
filename = elemAt (splitString "." bn) 0;
outName =
if isNull headline
then
let
bn = builtins.baseNameOf src;
filename = elemAt (splitString "." bn) 0;
in
if depot.nix.utils.isDirectory src
then filename
else filename + ".html"
else "${filename}-${replaceStrings [" "] ["-"] filename}.html";
escapeDoubleQuotes = replaceStrings [ "\"" ] [ "\\\"" ];
navToHeadline = optionalString (! isNull headline) ''
(search-forward "${escapeDoubleQuotes headline}")
(org-narrow-to-subtree)
'';
in
runCommand outName { inherit src; } ''
buildFile() {
cp "$1" file.org
${emacs}/bin/emacs --batch \
--load ${./config.el} \
--visit file.org \
--eval "(progn
${escapeDoubleQuotes navToHeadline}
(org-html-export-to-html))" \
--kill
rm file.org
substitute file.html "$2" \
--replace '<title>&lrm;</title>' ""
rm file.html
}
if [ -d $src ]; then
for file in $src/*; do
result=''${file/$src/$out}
mkdir -p $(dirname $result)
buildFile $file ''${result/.org/.html}
done
else
buildFile $src $out
fi
''