#!/bin/sh
cd `rpm --eval %{_builddir}`

# _noauto* wrapper for builtin rpm Requires generator
# requires:		/bin/sh, /usr/bin/rpmdeps, rpm, coreutils, findutils. mktemp
# input (stdin):	filenames (one per line)
# output (stdout):	Requires list (one per line)

# note that no large list is stored in shell variable - this was VERY slow

ulimit -c 0

noreqfiles=''
if [ -r __rpm_noautoreqfiles ]; then
	for i in `cat __rpm_noautoreqfiles`; do
		noreqfiles="${noreqfiles}\|${i}"
	done
fi
if [ -r /etc/rpm/noautoreqfiles ]; then
	for i in `cat /etc/rpm/noautoreqfiles | grep -v '^#'`; do
		noreqfiles="${noreqfiles}\|${i}"
	done
fi

noreq=''
if [ -r __rpm_noautoreq ]; then
	for i in `cat __rpm_noautoreq`; do
		noreq="${noreq}\|${i}"
	done
fi
if [ -r /etc/rpm/noautoreq ]; then
	for i in `cat /etc/rpm/noautoreq | grep -v '^#'`; do
		noreq="${noreq}\|${i}"
	done
fi

noreqdep=''
if [ -r __rpm_noautoreqdep ]; then
	for i in `cat __rpm_noautoreqdep`; do
		noreqdep="${noreqdep}\|${i}"
	done
fi
if [ -r /etc/rpm/noautoreqdep ]; then
	for i in `cat /etc/rpm/noautoreqdep | grep -v '^#'`; do
		noreqdep="${noreqdep}\|${i}"
	done
fi

FILES=`mktemp ${TMPDIR:-/tmp}/.rpmfilesXXXXXX`
PROVS=`mktemp ${TMPDIR:-/tmp}/.rpmprovsXXXXXX`
REQS=`mktemp ${TMPDIR:-/tmp}/.rpmreqsXXXXXX`

# we must duplicate file list here (to remove Provides list from Requires)
tee ${FILES} | /usr/lib/rpm/find-provides-wrapper > ${PROVS}

# rpmdeps output seems sorted, but resort it in case of long list split
grep -v -e "^\(${noreqfiles}\)\$" ${FILES} | tr '\n' '\0' | \
	xargs -r -0 /usr/bin/rpmdeps --requires | LC_ALL=C sort -u | \
	grep -v -e "^\(${noreq}\)\$" | \
	LC_ALL=C comm -2 -3 - ${PROVS} | tee ${REQS}

# package names only for SONAMES, perl(module) and pear(module)
grep -e '.\+\.so\|perl(.\+)\|pear(.\+)' ${REQS} | \
	grep -v -e "^\(${noreqdep}\)\$" | tr '\n' '\0' | \
	LC_ALL=C xargs -r -0 -- rpm -q --whatprovides --qf '%{NAME}\n' 2>/dev/null | \
	grep -v "no package provides" | LC_ALL=C sort -u

rm -f ${FILES} ${PROVS} ${REQS}

exit 0