# common functions used in tcos scripts


_echo () {
 # wrapper to echo in scripts, only print if debug is enabled
  if [ ${TCOS_DEBUG} ]; then
    echo "$@"
  fi
}


convert_links2files () {
# convert all links in $DESTDIR to linked files
# needed to calculate initramfs space
 dir=$(pwd)
 cd $DESTDIR
 # copy binary not links
 for xfile in $(find usr -type l); do
   if [ -f /$xfile ] ;then
     rm -f $DESTDIR/$xfile
     cp -f /$xfile $DESTDIR/$xfile
   else
     rm -f $DESTDIR/$xfile
     file=$(basename $xfile)
     cp -f $(pathof $file) $DESTDIR/$xfile
   fi
 done
 cd $dir
}

convert_links2files_bin () {
# convert all links in $DESTDIR to linked files
# needed to calculate initramfs space
 dir=$(pwd)
 cd $DESTDIR
 # copy binary not links
 for xfile in $(find bin -type l); do
   if [ -f /$xfile ] ;then
     rm -f $DESTDIR/$xfile
     cp -f /$xfile $DESTDIR/$xfile
   else
     rm -f $DESTDIR/$xfile
     file=$(basename $xfile)
     cp -f $(pathof $file) $DESTDIR/$xfile
   fi
 done
 cd $dir
}


stat_before () {
  # read space in $DESTDIR (this functions is a checkpoint)
  size1=$(du -s ${DESTDIR} 2>/dev/null| awk '{print $1}')
}
stat_after () {
  # read size after checkpoint and prints diff between disk space
  # this give what space need an app
  convert_links2files
  size2=$(du -s ${DESTDIR} 2>/dev/null| awk '{print $1}')
  diff_size=$(echo $((size2 -size1)) )
  if [ ${TCOS_DEBUG} ]; then
     _echo "Package $1 get ${diff_size} Kb."
  fi
}

pathof() {
  # give absolute path of $1 binary (if found)
    location=$(which $1 | awk '{print $1}')
    if [ -z $location ]; then
        location=$(whereis $1 | awk '{print $2}')
    fi
    if [ ! -e $location ]; then
        echo "pathof() ERROR $1 not found !!!" 1>&2
    fi
    echo $location
}

cpifexists () {
 #_echo "DEBUG: \$1=$1 \$2=$2"
  if [ -f $DESTDIR/$1 ]; then
    #echo "cpifexists(): WARNING: $1 exists in $DESTDIR, not copying again!!!"
    return 1
  fi
  if [ $# != 2 ]; then
   echo "cpifexists() ERROR: Need 2 arguments: \$1=$1 \$2=$2"
   #_echo "     DEBUG: \$1=$1 \$2=$2"
   return 1
 fi
 if [ ! -f $1 ]; then
   echo "cpifexits() ERROR: $1 no exists"
   #_echo "     DEBUG: \$1=$1 \$2=$2"
   return 1
 fi

 if [ ! -d $DESTDIR/$2 ]; then
   echo "cpifexits() WARNING: $DESTDIR/$2 don't exists"
   #_echo "     DEBUG: \$1=$1 \$2=$2"
 fi
#echo "DEBUG: copy_exec $1 $2"
copy_exec "${1}" "${2}"
return 0
}

copydir () {
 if [ $# != 2 ]; then
   echo "copydir() ERROR Need 2 arguments: \$1=$1 \$2=$2"
   #_echo "     DEBUG: \$1=$1 \$2=$2"
   return 1
 fi
 if [ ! -d $1 ]; then
   echo "copydir() WARNING $1 dir not exits"
   #_echo "     DEBUG: \$1=$1 \$2=$2"
   return 1
 fi
 
#_echo "cp -ra \"${1}\" \"${DESTDIR}/${2}\""
cp -ra "${1}" "${DESTDIR}/${2}"
return 0
}