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build: extract make "functions" into scripts

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we'll want to use these for the meson builds, and probably eventually
rewrite them in something that isn't plain shell. diffoscope confirms
that out/share and doc/share are equal before and after these changes

Change-Id: I49aa418fc8615cad86d67328e08c28a7405ec952
This commit is contained in:
eldritch horrors 2024-03-29 20:06:55 +01:00
parent a4f5bb951d
commit 65d544b1a6
3 changed files with 49 additions and 47 deletions
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57
doc/manual/local.mk
View file

@ -39,67 +39,30 @@ dummy-env = env -i \
nix-eval = $(dummy-env) $(doc_nix) eval --experimental-features nix-command -I nix/corepkgs=corepkgs --store dummy:// --impure --raw
# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
define process-includes
while read -r line; do \
set -euo pipefail; \
filename="$$(dirname $(1))/$$(sed 's/{{#include \(.*\)}}/\1/'<<< $$line)"; \
test -f "$$filename" || ( echo "#include-d file '$$filename' does not exist." >&2; exit 1; ); \
matchline="$$(sed 's|/|\\/|g' <<< $$line)"; \
sed -i "/$$matchline/r $$filename" $(2); \
sed -i "s/$$matchline//" $(2); \
done < <(grep '{{#include' $(1))
endef
$(d)/nix-env-%.1: $(d)/src/command-ref/nix-env/%.md
@printf "Title: %s\n\n" "$(subst nix-env-,nix-env --,$$(basename "$@" .1))" > $^.tmp
$(render-subcommand)
$(trace-gen) doc/manual/render-manpage.sh \
--unescape-dashes "$(subst nix-env-,nix-env --,$$(basename "$@" .1))" 1 $^ $^.tmp $@
$(d)/nix-store-%.1: $(d)/src/command-ref/nix-store/%.md
@printf -- 'Title: %s\n\n' "$(subst nix-store-,nix-store --,$$(basename "$@" .1))" > $^.tmp
$(render-subcommand)
# FIXME: there surely is some more deduplication to be achieved here with even darker Make magic
define render-subcommand
@cat $^ >> $^.tmp
@$(call process-includes,$^,$^.tmp)
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=1 $^.tmp -o $@
@# fix up `lowdown`'s automatic escaping of `--`
@# https://github.com/kristapsdz/lowdown/blob/edca6ce6d5336efb147321a43c47a698de41bb7c/entity.c#L202
@sed -i 's/\e\[u2013\]/--/' $@
@rm $^.tmp
endef
$(trace-gen) doc/manual/render-manpage.sh \
--unescape-dashes "$(subst nix-store-,nix-store --,$$(basename "$@" .1))" 1 $^ $^.tmp $@
$(d)/%.1: $(d)/src/command-ref/%.md
@printf "Title: %s\n\n" "$$(basename $@ .1)" > $^.tmp
@cat $^ >> $^.tmp
@$(call process-includes,$^,$^.tmp)
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=1 $^.tmp -o $@
@rm $^.tmp
$(trace-gen) doc/manual/render-manpage.sh "$$(basename $@ .1)" 1 $^ $^.tmp $@
$(d)/%.8: $(d)/src/command-ref/%.md
@printf "Title: %s\n\n" "$$(basename $@ .8)" > $^.tmp
@cat $^ >> $^.tmp
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=8 $^.tmp -o $@
@rm $^.tmp
$(trace-gen) doc/manual/render-manpage.sh "$$(basename $@ .8)" 8 $^ $^.tmp $@
$(d)/nix.conf.5: $(d)/src/command-ref/conf-file.md
@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
@cat $^ >> $^.tmp
@$(call process-includes,$^,$^.tmp)
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
@rm $^.tmp
$(trace-gen) doc/manual/render-manpage.sh "$$(basename $@ .5)" 5 $^ $^.tmp $@
$(d)/nix-profiles.5: $(d)/src/command-ref/files/profiles.md
@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
@cat $^ >> $^.tmp
$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
@rm $^.tmp
$(trace-gen) doc/manual/render-manpage.sh "$$(basename $@ .5)" 5 $^ $^.tmp $@
$(d)/src/SUMMARY.md: $(d)/src/SUMMARY.md.in $(d)/src/SUMMARY-rl-next.md $(d)/src/command-ref/new-cli $(d)/src/contributing/experimental-feature-descriptions.md
@cp $< $@
@$(call process-includes,$@,$@)
@doc/manual/process-includes.sh $@ $@
$(d)/src/command-ref/new-cli: $(d)/nix.json $(d)/utils.nix $(d)/generate-manpage.nix $(doc_nix)
@rm -rf $@ $@.tmp
@ -201,7 +164,7 @@ $(docdir)/manual/index.html: $(MANUAL_SRCS) $(d)/book.toml $(d)/anchors.jq $(d)/
tmp="$$(mktemp -d)"; \
cp -r doc/manual "$$tmp"; \
find "$$tmp" -name '*.md' | while read -r file; do \
$(call process-includes,$$file,$$file); \
doc/manual/process-includes.sh $$file $$file; \
done; \
find "$$tmp" -name '*.md' | while read -r file; do \
docroot="$$(realpath --relative-to="$$(dirname "$$file")" $$tmp/manual/src)"; \

12
doc/manual/process-includes.sh Executable file
View file

@ -0,0 +1,12 @@
#!/bin/sh
set -euo pipefail
# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
(grep '{{#include' "$1" || true) | while read -r line; do
filename="$(dirname "$1")/$(printf "$line" | sed 's/{{#include \(.*\)}}/\1/')"
test -f "$filename" || ( echo "#include-d file '$filename' does not exist." >&2; exit 1; )
matchline="$(printf "$line" | sed 's|/|\\/|g')"
sed -i "/$matchline/r $filename" "$2"
sed -i "s/$matchline//" "$2"
done

27
doc/manual/render-manpage.sh Executable file
View file

@ -0,0 +1,27 @@
#!/bin/sh
set -euo pipefail
unescape_dashes=
if [ "$1" = --unescape-dashes ]; then
unescape_dashes=yes
shift
fi
title="$1"
section="$2"
infile="$3"
tmpfile="$4"
outfile="$5"
printf "Title: %s\n\n" "$title" > "$tmpfile"
cat "$infile" >> "$tmpfile"
"$(dirname "$0")"/process-includes.sh "$infile" "$tmpfile"
lowdown -sT man --nroff-nolinks -M section="$section" "$tmpfile" -o "$outfile"
if [ -n "$unescape_dashes" ]; then
# fix up `lowdown`'s automatic escaping of `--`
# https://github.com/kristapsdz/lowdown/blob/edca6ce6d5336efb147321a43c47a698de41bb7c/entity.c#L202
sed -i 's/\e\[u2013\]/--/' "$outfile"
fi
rm "$tmpfile"