scripts/_tar_xz_files4.sh

   1 #tar xz targzs to destination
   2
   3 chk_exist()
   4 {
   5 #check if files exist on destination except symlinks to directories
   6 tar tzf "$targz_file" | grep -v "/$" | \
   7 while read line; do
   8     [ -e "$DIR_DST"/"$line" ] && echo "$line"
   9 done | grep -vFx "$(cat "$DIR_DST"/var/lib/instpkg/local/*/dirlinks 2> /dev/null)"
  10 }
  11
  12 untargz()
  13 {
  14 while read targz_file; do
  15     #check if files exist
  16     if [ $chk_dirlinks ]; then
  17         LS_EXIST=`chk_exist`
  18         [ ! -z "$LS_EXIST" ] && echo "$LS_EXIST" | sed "s%.*%$targz_file : '&' exists on destination path%" && exit 1
  19     fi
  20     tar xzf "$targz_file" -C "$DIR_DST" 2> /dev/null
  21     retval=$?
  22     #2 return code (value) (error) eg.: overwriting an existing directory with symbolic link
  23     if [ "$retval" = 2 ]; then
  24         tar tzf "$targz_file" | grep -v "/$" | \
  25         while read file; do
  26             #[ -d "$DIR_DST"/"$file" -a ! -L "$DIR_DST"/"$file" ] && echo "$file"
  27             [ -d "$DIR_DST"/"$file" -a ! -L "$DIR_DST"/"$file" ] && rm -rf "$DIR_DST"/"$file"
  28         done
  29         tar xzf "$targz_file" -C "$DIR_DST" 2> /dev/null
  30     fi
  31 done < /dev/stdin
  32 }
  33
  34 [ "$1" = "-c" ] && chk_dirlinks=1 && shift
  35
  36 if [ "$#" = 3 ]; then
  37     TGZ="$1"
  38     [ ! -f "$TGZ" ] && echo "No such targz file" && exit 1
  39     shift
  40 fi
  41
  42 DIR_SRC="$1"
  43 DIR_DST="$2"
  44
  45 [ ! -d "$DIR_SRC" ] && echo "No such source directory" && exit 1
  46 [ ! -d "$DIR_DST" ] && echo "No such destination directory" && exit 1
  47
  48 DIR_DST=`cd "$DIR_DST" && pwd -P`
  49 [ "$?" != 0 ] && echo "Cannot change to destination directory" && exit 1
  50
  51 cd "$DIR_SRC"
  52 [ "$?" != 0 ] && echo "Cannot change to source directory" && exit 1
  53
  54 if [ -n "$TGZ" ]; then
  55     echo "$TGZ" | untargz
  56 else
  57     ls *.tar.gz 2> /dev/null | untargz
  58 fi