vfs/extfs/u7z

   1 #! /bin/sh
   2 #
   3 # extfs support for p7zip
   4 # Written by Pavel Roskin <proski@gnu.org>
   5 # Some Bugfixes/workarounds by Sergiy Niskorodov <sgh@mail.zp.ua>
   6 # Licensed under GNU GPL version 2 or later version.
   7
   8 P7ZIP=`which 7z 2>/dev/null` || P7ZIP=`which 7za 2>/dev/null`
   9
  10 mcu7zip_list ()
  11 {
  12         # Symlinks are not shown - no idea how to distinguish them
  13         # Read-only files are not shown as such - it's rarely useful
  14         ugid="`id -nu` `id -ng`"
  15         date_re='^\(....\)-\(..\)-\(..\) \(..:..:..\)'
  16         date_mc='\2-\3-\1 \4'
  17         size_re='............'
  18         $P7ZIP l "$1" | sed -n "s/$date_re D.... $size_re $size_re\(.*\)/drwxr-xr-x 1 $ugid 0 $date_mc \5/p;s/$date_re \..... \($size_re\) $size_re\(.*\)/-rw-r--r-- 1 $ugid \5 $date_mc \6/p"
  19 }
  20
  21 mcu7zip_copyout ()
  22 {
  23         #first we check if we have old p7zip archive with prefix ./ in filename
  24         $P7ZIP l "$1" "$2" | grep -q "0 files, 0 folders" && \
  25         EXFNAME='*./'"$2" || EXFNAME="$2"
  26         $P7ZIP e -so "$1" "$EXFNAME" > "$3" 2>/dev/null
  27 }
  28
  29 mcu7zip_copyin ()
  30 {
  31         $P7ZIP a -si"$2" "$1" <"$3" >/dev/null 2>&1
  32 }
  33
  34 mcu7zip_mkdir ()
  35 {
  36         dir=`mktemp -d "${MC_TMPDIR:-/tmp}/mctmpdir-u7z.XXXXXX"` || exit 1
  37         mkdir -p "$dir"/"$2"
  38         $P7ZIP a -w"$dir" "$1" "$dir"/"$2" >/dev/null 2>&1
  39         rm -rf "$dir"
  40 }
  41
  42 mcu7zip_rm ()
  43 {
  44         # NOTE: Version 4.20 fails to delete files in subdirectories
  45         #first we check if we have old p7zip archive with prefix ./ in filename
  46         $P7ZIP l "$1" "$2" | grep -q "0 files, 0 folders" && \
  47         EXFNAME='*./'"$2" || EXFNAME="$2"
  48         $P7ZIP d "$1" "$EXFNAME" 2>&1 | grep -q E_NOTIMPL > /dev/null 2>&1 && \
  49         { printf "Function not implemented...\n7z cannot delete from solid archive." >&2 ; exit 1 ; }
  50 }
  51
  52 mcu7zip_rmdir ()
  53 {
  54         #first we check if we have old p7zip archive with prefix ./ in filename
  55         $P7ZIP l "$1" "$2" | grep -q "0 files, 0 folders" && \
  56         EXFNAME='*./'"$2" || EXFNAME="$2"
  57         $P7ZIP d "$1" "$EXFNAME"/ 2>&1 | grep -q E_NOTIMPL > /dev/null 2>&1 && \
  58         { printf "Function not implemented...\n7z cannot delete from solid archive." >&2 ; exit 1 ; }
  59 }
  60
  61 # override any locale for dates
  62 LC_DATE=C
  63 export LC_DATE
  64
  65 umask 077
  66
  67 cmd="$1"
  68 shift
  69
  70 case "$cmd" in
  71   list)    mcu7zip_list    "$@" | sort -k 8 ;;
  72   copyout) mcu7zip_copyout "$@" ;;
  73   copyin)  mcu7zip_copyin  "$@" ;;
  74   mkdir)   mcu7zip_mkdir   "$@" ;;
  75   rm)      mcu7zip_rm      "$@" ;;
  76   rmdir)   mcu7zip_rmdir   "$@" ;;
  77   *) exit 1 ;;
  78 esac
  79 exit 0