checkdeps

#!/bin/bash
DIST=${DIST:-$(lsb_release -cs)}
ARCH=${ARCH:-$(dpkg --print-architecture)}
COMPONENTS=${COMPONENTS:-"main universe multiverse restricted partner free non-free"}
MIRRORS=${MIRRORS:-"http://archive.ubuntu.com/ubuntu http://archive.canonical.com http://archive.osl.ull.es/bardinux"}
FILELIST=$(tempfile)

echo -e "Using the following mirrors: \n - ${MIRRORS// /\\n - }"

PACKAGES_ENABLED=$(grep -vh "^#" */gcs/{depends,recommends,suggests} 2> /dev/null | cut -d " " -f 1 | sort -u)
PACKAGES_DISABLED=$(grep -h "^#" */gcs/{depends,recommends,suggests} 2> /dev/null | cut -d " " -f 1 | sort -u | sed 's/#//g')

rm -f ${FILELIST}
echo -n "Downloading package list: "
for COMPONENT in ${COMPONENTS}; do
	echo -n "${COMPONENT} "
	for MIRROR in ${MIRRORS//,/ }; do
		wget "${MIRROR}/dists/${DIST}/${COMPONENT}/binary-${ARCH}/Packages.gz" -q -O - | gunzip 2> /dev/null | awk -F ": " '$1 == "Package" || $1 == "Provides" { print $2 }' | sed 's/,//g' | sort -u >> ${FILELIST}
	done
done
echo ""

unset FOUND
echo "Unmet dependences: "
for PKG in $PACKAGES_ENABLED; do
	if ! grep -q "^${PKG}$" ${FILELIST} && ! grep -q "^name: *${PKG}$" */gcs/info && ! grep -Eq "^${PKG}($| )" */gcs/provides; then
		egrep --color "^${PKG}($| )" */gcs/{depends,recommends,suggests} 2> /dev/null
		FOUND=true
	fi
done

if [ ! $FOUND ]; then
	echo "None."
fi

unset FOUND
echo "Disabled dependences available: "
for PKG in $PACKAGES_DISABLED; do
	if grep -q "^${PKG}$" ${FILELIST} || grep -q "^name: *${PKG}$" */gcs/info || grep -Eq "^${PKG}($| )" */gcs/provides; then
		egrep --color "^#${PKG}($| )" */gcs/{depends,recommends,suggests} 2> /dev/null
		FOUND=true
	fi
done

if [ ! $FOUND ]; then
	echo "None."
fi