#!/bin/bash
# find what package a file comes from

# if bare filename, uses either current directory or 
#  executable path for full path name
if echo $1 | grep -q '/'; then
	target=$1
else
	target=`which $1` || target=`pwd`/$1
fi

# we want link target
target=`ls -l $target 2>/dev/null | sed 's/.* //' `

# of course it has to exist...
if [ -e "$target" ]; then
	# lists may not have install target in the path name
        target=`echo $target | sed 's|/mnt/card/||;s|/mnt/cf/||' `
	# It's called parametric substitution
	package=`grep -l "$target$" {,/mnt/cf,/mnt/card}/usr/lib/ipkg/info/*.list` || echo "no package found"
	if [ -n "$package" ]; then
		[[ $package == */mnt/cf/* ]]   && { from=`basename $package`; 
						    from=${from%%.list};
						    where=CF; }
		[[ $package == */mnt/card/* ]] && { from=`basename $package`; 
						    from=${from%%.list};
						    where=SD; }
		[[ $package != */mnt* ]]       && { from=`basename $package`; 
						    from=${from%%.list};
						    where=RAM; }
		echo $from in $where
	fi
else
	target=${target:-$1}
	echo no such file, \"$target\"
fi