multistrap/check-deps.sh

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#!/bin/sh
set -e
# Copyright 2010 Neil Williams <codehelp@debian.org>
# Copyright 2010 Philip Hands <phil@hands.com>
# This package is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# using the package directly means we don't have to deal
# with multiline Depends
while [ -n "$1" ]; do
case "$1" in
-\?|-h|--help)
shift
echo "-f path to a .deb filename; -i install the packages now."
exit 0
;;
-f|--file)
shift
FILE=$1
shift
;;
-i|--install)
shift
INSTALL=1
;;
-y|--yes)
shift
YES=1
;;
*)
FILE=$1
shift
;;
esac
done
if [ ! -f "$FILE" -o ! -r "$FILE" ]; then
echo "Please specify a path to a debian package file with the -f command."
exit 2
fi
DEPS=$(dpkg-deb -f $FILE Depends) || exit 3
IFS=,
CMD=
ERR=
for pkg in $DEPS; do
CHECK=
name=$(echo $pkg|sed -e 's/^ //'|cut -d' ' -f1)
if [ "apt" = "$name" ]; then
continue
fi
orlist=$(echo $pkg|grep "|" || true)
while [ -n "$orlist" ]; do
ORPKG=`echo $pkg|cut -d'|' -f2|sed -e 's/^ //'`
ALTERNATE="$ALTERNATE $ORPKG"
orlist=$(echo $orlist | sed -e "s/.*$ORPKG//;s/^ *//;s/ *$//")
ALTERNATE=$(echo $ALTERNATE|sed -e 's/^ *//;s/ *$//')
pkg=$(echo $pkg|sed -e "s/|//;s/$ORPKG//;s/^ *//;s/ *$//")
done
if [ -n `echo $pkg|grep '('` ]; then
VERLIMIT=`echo $pkg|cut -d'(' -f2|tr -d ')'|tr -d '\n'|grep -v $name || true`
VERCMP=`echo $VERLIMIT|sed -e 's/\(.*\) \(.*\)/\1/'`
VERLIMIT=`echo $VERLIMIT|sed -e 's/\(.*\) \(.*\)/\2/'`
fi
POLICY=`LC_ALL=C apt-cache policy $name 2>/dev/null|grep Candidate|cut -d':' -f2-3|tr -d ' '`
if [ -n "$POLICY" ]; then
if [ -n "$VERLIMIT" ]; then
set +e
CHECK=`dpkg --compare-versions $POLICY "$VERCMP" $VERLIMIT ; echo $?`
set -e
fi
if [ -z "$CHECK" ]; then
VERLIMIT=
VERCMP=
name=$(echo $ALTERNATE|sed -e 's/^ //'|cut -d' ' -f1)
if [ -n `echo $ALTERNATE|grep '('` ]; then
VERLIMIT=`echo $ALTERNATE|cut -d'(' -f2|tr -d ')'|tr -d '\n'|grep -v $name || true`
VERCMP=`echo $VERLIMIT|sed -e 's/\(.*\) \(.*\)/\1/'`
VERLIMIT=`echo $VERLIMIT|sed -e 's/\(.*\) \(.*\)/\2/'`
fi
POLICY=`LC_ALL=C apt-cache policy $name 2>/dev/null|grep Candidate|cut -d':' -f2-3|tr -d ' '`
if [ -n "$POLICY" ]; then
if [ -n "$VERLIMIT" ]; then
set +e
CHECK=`dpkg --compare-versions $POLICY "$VERCMP" $VERLIMIT ; echo $?`
set -e
fi
fi
fi
else
ERR="$ERR $name "
fi
if [ -z "$CHECK" -o "0" != "$CHECK" ]; then
if [ -n "$VERCMP" ]; then
echo "$name ($VERCMP $VERLIMIT) is NOT available."
ERR="$ERR $name ($VERCMP $VERLIMIT) "
fi
fi
if [ -n "$YES" ]; then
CMD="$CMD -y $name"
fi
done
if [ -n "$ERR" ]; then
echo Some packages are not available: $ERR
exit 1
fi
if [ -n "$INSTALL" ]; then
eval apt-get install "$CMD"
dpkg -i $FILE
elif [ -n "$CMD" ]; then
echo apt-get install ${CMD}
fi