#!/usr/bin/bash

#

# mono-find-requires

#

# Authors:

#       Ben Maurer (bmaurer@ximian.com)

#

# (C) 2005 Novell (http://www.novell.com)

#

# Args: builddir buildroot libdir

IFS=$'\n'

filelist=($(grep -Ev "$3/doc/|$3/share/doc/"))

monolist=($(printf "%s\n" "${filelist[@]}" | grep -E "\\.(exe|dll)\$"))

# If monodis is in the package being installed, use that one

# This is to support building mono

build_bindir="$2$3/bin"

build_libdir="$2$3/$4"

if [ -x $build_bindir/monodis ]; then

    monodis="$build_bindir/monodis"

    export LD_LIBRARY_PATH=$build_libdir${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}

elif [ -x $3/bin/monodis ]; then

    monodis="$3/bin/monodis"

else

    exit 0;

fi

export MONO_SHARED_DIR=$1

REQUIRES=$(

	for i in "${monolist[@]}"; do

		($monodis --assemblyref $i | awk '

			BEGIN { START=0; LIBNAME=""; VERSION=""; }

			(START==0) && /^[0-9]+: Version=/ {

				START=1;

				sub(/Version=/, "", $2);

				VERSION=$2

			}

			(START==1) && /^\tName=/ {

				sub(/Name=/, "", $1);

				LIBNAME=$1

				print "mono(" LIBNAME ") = " VERSION

				START=0

			}

		    ') 2> /dev/null

	done

)

PROVIDES=$(

	for i in "${monolist[@]}"; do

		($monodis --assembly $i | awk '

			BEGIN { LIBNAME=""; VERSION=""; }

			/^Version:/ { VERSION=$2 }

			/^Name:/    { LIBNAME=$2 }

			END {

				if (VERSION && LIBNAME)

					print "mono(" LIBNAME ") = " VERSION

			}

		    ') 2>/dev/null

	done

)

#

# This is a little magic trick to get all REQUIRES that are not

# in PROVIDES. While RPM functions correctly when such deps exist,

# they make the metadata a bit bloated.

#

# Filter out dups from both lists

REQUIRES=$(echo "$REQUIRES" | sort | uniq)

PROVIDES=$(echo "$PROVIDES" | sort | uniq)

#

# Get a list of elements that exist in exactly one of PROVIDES or REQUIRES

#

UNIQ=$(echo "$PROVIDES

$REQUIRES" | sort | uniq -u)

#

# Of those, only chose the ones that are in REQUIRES

#

echo "$UNIQ

$REQUIRES" | sort | uniq -d