pip2dash

#!/bin/sh
set -eux
PYTHON="${PYTHON:-python3}"
PIPFLAGS="${PIPFLAGS:--qq}"
DOCSETS="${DOCSETS:-$HOME/.local/share/Zeal/Zeal/docsets}"

fail() {
	echo 'pip2dash:' "$@" >&2
	exit 1
}

_pip() {
	[ "${VIRTUAL_ENV:-}" ] && _python="python" || _python="$PYTHON"
	set -f
	"$_python" -m pip $PIPFLAGS "$@"
	set +f
}

# https://github.com/pypa/pip/issues/7122
_fix_issue_7122() {
	! grep -q 'does not provide the extra'
}

WORKDIR="$(mktemp -d)"
trap "rm -r $WORKDIR" EXIT
cd "$WORKDIR"

_pip download --no-deps --no-binary :all: "$@"

DESTDIR="$WORKDIR/dest"
mkdir -p "$DESTDIR"
tar -C "$DESTDIR" -xf ./*.tar.*
PACKAGEDIR="$(echo "$DESTDIR"/*)"
cd "$PACKAGEDIR"

"$PYTHON" -m venv .venv
ln -s .env env venv ENV .venv # fix hardcoded venv paths...
cat > .venv/bin/virtualenv <<EOF
import sys
import virtualenv

if virtualenv.__version__.startswith("16"):
	main = virtualenv.main
else:
	from virtual.__main__ import run_with_catch
	def main():
		return run_with_catch(sys.argv)
if __name__ == "__main__":
	sys.exit(main())
EOF
chmod +x .venv/bin/virtualenv # ...and fix more stupid code

set +x; . .venv/bin/activate; set -x
_pip install virtualenv doc2dash sphinx # ...we *do* need virtualenv
_pip install --no-binary :all: .
_pip install --no-binary :all: '.[docs]' '.[doc]' '.[documentation]' 2>&1 | _fix_issue_7122 || {
	for rlist in requirements.doc*.txt requirements/doc*.txt; do
		# expect these to fail, thus another -q for level=CRITICAL
		_pip -q install -r "$rlist" || continue
	done
}
cd docs || cd doc || fail 'only sphinx docs are supported at the moment (or project has no doc[s] directory at the top level)'
make env || make environment || true # some projects, man...
make html
DOCDIR="$(pwd)/$(find . -type d -path '*/_build/html')"

ICON_IN="$(python3 -c 'import conf; print(getattr(conf, "html_favicon"))')" || {
	curl -sLo favicon.in.png https://assets.readthedocs.org/static/images/favicon.png || ICON_IN=
	ICON_IN=favicon.in.png
}
convert "$ICON_IN" favicon.png && ICON="$(pwd)/favicon.png" || ICON=
cd "$WORKDIR"
NAME="$(echo "$(basename "$PACKAGEDIR")" | tr '[:punct:]' - | awk -F '-' '{print $1;}')"
if [ "$ICON" ]; then
	doc2dash -i "$ICON" -n "$NAME" "$DOCDIR"
else
	doc2dash -n "$NAME" "$DOCDIR"
fi
cp -rf "$NAME.docset" "$DOCSETS/"

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