#! /bin/bash
set -e
# build/znc-1.8.1-2.fc33.src.rpm.rpms
[ $# -eq 1 ]
which readelf >/dev/null
srcrpm=$1
test -e $srcrpm.rpms
test ! -e $srcrpm.rpmsizes
test ! -e $srcrpm.rpms.d
mkdir $srcrpm.rpms.d
pushd $srcrpm.rpms.d >/dev/null
  rpmsbase=../../`basename $srcrpm`
  dwzrpms=$rpmsbase.rpms
  dtrpms=$rpmsbase.dt.rpm.rpms
  mkdir empty
  cd empty
    if [ -z "$(find $dwzrpms $dtrpms -maxdepth 1 -type f)" ];then
      popd >/dev/null
      rm -rf $srcrpm.rpms.d
      echo "0 0" >$srcrpm.rpmsizes
      exit 0
    fi
  cd ..
  function extract
  {
    for i in $1/*-debuginfo*.rpm;do
      test ! -e $i.tgz
      rpm2archive $i
      test -e $i.tgz
      tar xzf $i.tgz
      rm -f $i.tgz
    done
  }
  mkdir dwz;(cd dwz;extract $dwzrpms)
  mkdir  dt;(cd  dt;extract  $dtrpms)
  dwzcommon="$(find dwz/usr/lib/debug/.dwz/ -type f -printf "%s" 2>/dev/null || :)"
  if [ -z "$dwzcommon" ];then
    dwzcommon=0
  fi
  dwztot=0
  dttot=0
  pushd dwz >/dev/null
    for i in `find -type f -name "*.debug*"`;do
      dwz=$(find $i      -maxdepth 0 -printf "%s")
      dt=$(find ../dt/$i -maxdepth 0 -printf "%s")
      if readelf -WS $i 2>/dev/null|fgrep -q .gnu_debugaltlink;then
	if [ $dwzcommon -eq 0 ];then
	  echo >&2 Excessive .gnu_debugaltlink: $i
	  exit 1
	fi
	dwz=$[$dwz+$dwzcommon]
      fi
      dwztot=$[$dwztot+$dwz]
      dttot=$[$dttot+$dt]
    done
  popd >/dev/null
popd >/dev/null
rm -rf $srcrpm.rpms.d
echo "$dwztot $dttot" >$srcrpm.rpmsizes