archives2git

   1 #!/bin/sh
   2 # archives2git - generate a Git history from a series of release tarballs
   3 # Copyright © 2013 Géraud Meyer <graud@gmx.com>
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License version 2 as
   7 # published by the Free Software Foundation.
   8 #
   9 # This program is distributed in the hope that it will be useful, but
  10 # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11 # or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 # for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License along
  15 # with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 PROGRAM_NAME="archives2git"
  18 PROGRAM_VERSION="0"
  19 # Usage:
  20 #   archives2git [<options>] [--] <archives>
  21
  22 # parameters
  23 RENAME='echo "$file"'
  24 GIT_WORK_TREE=${GIT_WORK_TREE-.}
  25 FILTER='true $file'
  26 DATE=''
  27 TITLE='echo "$arch"'
  28 BODY=
  29 ARGS=
  30 while [ $# -gt 0 ]
  31 do
  32         case $1 in
  33         --rename)
  34                 shift; RENAME=$1 ;;
  35         --repo)
  36                 shift; GIT_WORK_TREE=$1 ;;
  37         --filter-file)
  38                 shift; FILTER=$1 ;;
  39         --date)
  40                 shift; DATE=$1 ;;
  41         --title)
  42                 shift; TITLE=$1 ;;
  43         --body)
  44                 shift; BODY=$1 ;;
  45         --git-arg)
  46                 shift; ARGS="$ARGS $1" ;;
  47         --version)
  48                 echo "$PROGRAM_NAME version $PROGRAM_VERSION"
  49                 exit ;;
  50         --?*)
  51                 echo "$0: unknown option $1" >&2
  52                 exit 255 ;;
  53         --)
  54                 shift; break ;;
  55         *)
  56                 break ;;
  57         esac
  58         shift
  59 done
  60 # setup
  61 NL='
  62 '
  63 TMPDIR=$(mktemp -d)
  64 WRKDIR=$(pwd)
  65 # git repository check
  66 cd "$GIT_WORK_TREE" &&
  67 { test -d .git || git rev-parse --git-dir >/dev/null; } ||
  68 {
  69         echo "$0: error not in a git repository" >&2
  70         exit 255
  71 }
  72
  73 # main
  74 set -e
  75 for arch
  76 do
  77         cd "$WRKDIR"
  78         aunpack -X "$TMPDIR" "$arch"
  79         cd "$GIT_WORK_TREE"
  80         for file in * .*
  81         do
  82                 [ -e "$file" ] || continue
  83                 [ "$file" = "." -o "$file" = ".." -o "$file" = ".git" ] && continue
  84                 git rm -r "$file" || rm -R "$file"
  85         done
  86         for file in "$TMPDIR"/* "$TMPDIR"/.*
  87         do
  88                 [ -e "$file" ] || continue
  89                 file=${file#$TMPDIR/}
  90                 [ "$file" = "." -o "$file" = ".." ] && continue
  91                 name=$(eval "$RENAME")
  92                 if [ -n "$name" ]
  93                 then mv "$TMPDIR"/"$file" ./"$name"
  94                 else rm "$TMPDIR"/"$file"
  95                 fi
  96         done
  97         for file in * .*
  98         do
  99                 [ -e "$file" ] || continue
 100                 [ "$file" = "." -o "$file" = ".." -o "$file" = ".git" ] && continue
 101                 eval "$FILTER" && git add "$file"
 102         done
 103         git commit -m "$(eval "$TITLE")${BODY:+$NL$BODY}" \
 104           ${DATE:+--date "$(eval "$DATE")"} $ARGS
 105 done
 106
 107 #
 108 rmdir "$TMPDIR"