bin/sde-download-git

   1 #!/bin/sh
   2 # --- SDE-COPYRIGHT-NOTE-BEGIN ---
   3 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
   4 #
   5 # Filename: bin/sde-download-git
   6 # Copyright (C) 2007 The OpenSDE Project
   7 #
   8 # More information can be found in the files COPYING and README.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; version 2 of the License. A copy of the
  13 # GNU General Public License can be found in the file COPYING.
  14 # --- SDE-COPYRIGHT-NOTE-END ---
  15
  16 [ -n "$SDEROOT" ] ||
  17         export SDEROOT=$( cd "${0%/*}/.."; pwd -P )
  18
  19 . $SDEROOT/lib/libsde.in
  20
  21 download_usage() {
  22         local progname=${0##*/}
  23         cat <<EOT >&2
  24 Usage:  $progname [-vq] <target> <source> <tag>
  25 EOT
  26 }
  27
  28 shortopts='qv'
  29 longopts='quiet,verbose'
  30 options=$( getopt -o "$shortopts" -l "$longopts" -- "$@" )
  31
  32 if [ $? -ne 0 ]; then
  33         download_usage
  34         exit -1
  35 fi
  36
  37 # load new arguments list
  38 eval set -- "$options"
  39
  40 verbose=1
  41 target=
  42 source=
  43
  44 while [ $# -gt 0 ]; do
  45         case "$1" in
  46                 --)     shift; break ;;
  47
  48                 -v|--verbose)
  49                         let verbose++ ;;
  50                 -q|--quiet)
  51                         let verbose-- ;;
  52         esac
  53         shift
  54 done
  55
  56 # now take the real arguments
  57 if [ $# -ne 3 ]; then
  58         echo_error "Not enough arguments given."
  59         download_usage
  60         exit -1
  61 fi
  62
  63 target="$1"
  64 source="$2"
  65 tag="$3"
  66 errno=0
  67
  68 if [ -e "$target.lock" ]; then
  69         echo_warning "$target: File locked"
  70         exit 111
  71 else
  72         trap '' INT
  73         echo "$$" > "$target.lock"
  74         prefix=${source##*/}; prefix=${prefix%.git}-${tag}
  75
  76         [ $verbose -le 1 ] || echo_info "git-archive --format=tar --prefix=$prefix/ --remote='$source' '$tag'"
  77
  78         # download in background
  79         (
  80         git-archive --format=tar --prefix=$prefix/ --remote="$source" "$tag" | bzip2 > $target
  81         echo $? > $target.errno
  82         ) &
  83
  84         # and wait until it ends
  85         while fuser $target &> /dev/null ; do
  86                 echo -ne "$( nice du -sh "$target" 2> /dev/null | cut -f1 ) downloaded from archive so far...\r"
  87                 sleep 3
  88         done
  89
  90         errno=$( cat $target.errno 2> /dev/null )
  91         if [ "$errno" != "0" -o ! -s "$target" ]; then
  92                 rm -f "$target"
  93                 echo_error "Download failed (errno:${errno:-undefined})"
  94         elif [ $verbose -gt 0 ]; then
  95                 echo_info "$( du -sh "$target" 2> /dev/null | cut -f1 ) downloaded from archive."
  96         fi
  97
  98         rm -f "$target.errno" "$target.lock"
  99         trap - INT
 100         exit ${errno:-1}
 101 fi