Fix rules

[rustc.git] / debian / prune-unused-deps

#!/bin/bash
# Run this script in an unpacked upstream tarball directory, and it will update
# (i.e. overwrite) the "unused deps" part of Files-Excluded in d/copyright.

set -e

scriptdir=$(dirname "$(dirname "$(readlink -f "$0")")")
had_configure_upstream=$(if test -e "$scriptdir/debian/configure-upstream"; then echo true; else echo false; fi)
( cd "$scriptdir" && debian/rules debian/configure-upstream )

"$scriptdir/debian/configure-upstream"
"$scriptdir/debian/ensure-patch" -N "$scriptdir/debian/patches/d-ignore-removed-submodules.patch"
test -f src/Cargo.lock.orig || cp src/Cargo.lock src/Cargo.lock.orig
./x.py build nonexistent/path/to/trigger/cargo/metadata src/bootstrap

not_needed() {
	diff -ru src/Cargo.lock.orig src/Cargo.lock | grep '^-"checksum' | cut '-d ' -f2-3
}

ghetto_parse_cargo() {
	cat "$1" \
	 | tr '\n' '\t' \
	 | sed -e 's/\t\[/\n[/g' \
	 | perl -ne 'print if s/^\[(?:package|project)\].*\tname\s*=\s*"(.*?)".*\tversion\s*=\s*"(.*?)".*/\1 \2/g'
}

pruned_paths() {
	for i in src/vendor/*/Cargo.toml; do
		pkgnamever=
		pkgnamever=$(ghetto_parse_cargo "$i")
		if [ -z "$pkgnamever" ]; then
			echo >&2 "failed to parse: $i"
			exit 1
		fi
		echo "$pkgnamever $i"
	done | grep -F -f <(not_needed) | cut '-d ' -f3 | while read x; do
		echo " $(dirname $x)"
	done
}

header='# DO NOT EDIT below, AUTOGENERATED'
footer='# DO NOT EDIT above, AUTOGENERATED'
{
echo "$header"
pruned_paths
echo "$footer"
} > $scriptdir/debian/copyright.unused-deps

cd $scriptdir/debian
sed -i -e "/^$header/,/^$footer/d" -e '/^# unused dependencies/rcopyright.unused-deps' copyright
rm copyright.unused-deps
$had_configure_upstream || rm "$scriptdir/debian/configure-upstream"