Documentation/BK-usage/bz64wrap

   1 #!/bin/sh
   2
   3 # bz64wrap - the sending side of a bzip2 | base64 stream
   4 # Andreas Dilger <adilger@clusterfs.com>   Jan 2002
   5
   6
   7 PATH=$PATH:/usr/bin:/usr/local/bin:/usr/freeware/bin
   8
   9 # A program to generate base64 encoding on stdout
  10 BASE64_ENCODE="uuencode -m /dev/stdout"
  11 BASE64_BEGIN=
  12 BASE64_END=
  13
  14 BZIP=NO
  15 BASE64=NO
  16
  17 # Test if we have the bzip program installed
  18 bzip2 -c /dev/null > /dev/null 2>&1 && BZIP=YES
  19
  20 # Test if uuencode can handle the -m (MIME) encoding option
  21 $BASE64_ENCODE < /dev/null > /dev/null 2>&1 && BASE64=YES
  22
  23 if [ $BASE64 = NO ]; then
  24         BASE64_ENCODE=mimencode
  25         BASE64_BEGIN="begin-base64 644 -"
  26         BASE64_END="===="
  27
  28         $BASE64_ENCODE < /dev/null > /dev/null 2>&1 && BASE64=YES
  29 fi
  30
  31 if [ $BZIP = NO -o $BASE64 = NO ]; then
  32         echo "$0: can't use bz64 encoding: bzip2=$BZIP, $BASE64_ENCODE=$BASE64"
  33         exit 1
  34 fi
  35
  36 # Sadly, mimencode does not appear to have good "begin" and "end" markers
  37 # like uuencode does, and it is picky about getting the right start/end of
  38 # the base64 stream, so we handle this internally.
  39 echo "$BASE64_BEGIN"
  40 bzip2 -9 | $BASE64_ENCODE
  41 echo "$BASE64_END"