nixpkgs/nixos/doc/manual/md-to-db.sh
pennae 0a6e6cf7e6 nixos/manual: render module chapters with nixos-render-docs
this converts meta.doc into an md pointer, not an xml pointer. since we
no longer need xml for manual chapters we can also remove support for
manual chapters from md-to-db.sh

since pandoc converts smart quotes to docbook quote elements and our
nixos-render-docs does not we lose this distinction in the rendered
output. that's probably not that bad, our stylesheet didn't make use of
this anyway (and pre-23.05 versions of the chapters didn't use quote
elements either).

also updates the nixpkgs manual to clarify that option docs support all
extensions (although it doesn't support headings at all, so heading
anchors don't work by extension).
2023-01-27 20:07:34 +01:00

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#! /usr/bin/env nix-shell
#! nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/tarball/22.11 -i bash -p pandoc
# This script is temporarily needed while we transition the manual to
# CommonMark. It converts the .md files in the regular manual folder
# into DocBook files in the from_md folder.
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
pushd "$DIR"
link_manpages_filter=$(nix-build --no-out-link "$DIR/../../../doc/build-aux/pandoc-filters/link-manpages.nix")
# NOTE: Keep in sync with Nixpkgs manual (/doc/Makefile).
# TODO: Remove raw-attribute when we can get rid of DocBook altogether.
pandoc_commonmark_enabled_extensions=+attributes+fenced_divs+footnotes+bracketed_spans+definition_lists+pipe_tables+raw_attribute
pandoc_flags=(
# Not needed:
# - diagram-generator.lua (we do not support that in NixOS manual to limit dependencies)
# - media extraction (was only required for diagram generator)
# - docbook-reader/citerefentry-to-rst-role.lua (only relevant for DocBook → MarkDown/rST/MyST)
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/myst-reader/roles.lua"
"--lua-filter=$link_manpages_filter"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/docbook-writer/rst-roles.lua"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/docbook-writer/html-elements.lua"
"--lua-filter=$DIR/../../../doc/build-aux/pandoc-filters/docbook-writer/labelless-link-is-xref.lua"
-f "commonmark${pandoc_commonmark_enabled_extensions}+smart"
-t docbook
)
OUT="$DIR/from_md"
mapfile -t MD_FILES < <(find . -type f -regex '.*\.md$')
for mf in ${MD_FILES[*]}; do
if [ "${mf: -11}" == ".section.md" ]; then
mkdir -p "$(dirname "$OUT/$mf")"
OUTFILE="$OUT/${mf%".section.md"}.section.xml"
pandoc "$mf" "${pandoc_flags[@]}" \
-o "$OUTFILE"
grep -q -m 1 "xi:include" "$OUTFILE" && sed -i 's|xmlns:xlink="http://www.w3.org/1999/xlink"| xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude"|' "$OUTFILE"
fi
if [ "${mf: -11}" == ".chapter.md" ]; then
mkdir -p "$(dirname "$OUT/$mf")"
OUTFILE="$OUT/${mf%".chapter.md"}.chapter.xml"
pandoc "$mf" "${pandoc_flags[@]}" \
--top-level-division=chapter \
-o "$OUTFILE"
grep -q -m 1 "xi:include" "$OUTFILE" && sed -i 's|xmlns:xlink="http://www.w3.org/1999/xlink"| xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xi="http://www.w3.org/2001/XInclude"|' "$OUTFILE"
fi
done
popd