git-repack.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2005 Linus Torvalds
   4 #
   5
   6 USAGE='[-a] [-d] [-f] [-l] [-n] [-q]'
   7 . git-sh-setup
   8
   9 no_update_info= all_into_one= remove_redundant=
  10 local= quiet= no_reuse_delta= extra=
  11 while case "$#" in 0) break ;; esac
  12 do
  13         case "$1" in
  14         -n)     no_update_info=t ;;
  15         -a)     all_into_one=t ;;
  16         -d)     remove_redundant=t ;;
  17         -q)     quiet=-q ;;
  18         -f)     no_reuse_delta=--no-reuse-delta ;;
  19         -l)     local=--local ;;
  20         --window=*) extra="$extra $1" ;;
  21         --depth=*) extra="$extra $1" ;;
  22         *)      usage ;;
  23         esac
  24         shift
  25 done
  26
  27 rm -f .tmp-pack-*
  28 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
  29
  30 # There will be more repacking strategies to come...
  31 case ",$all_into_one," in
  32 ,,)
  33         rev_list='--unpacked'
  34         pack_objects='--incremental'
  35         ;;
  36 ,t,)
  37         rev_list=
  38         pack_objects=
  39
  40         # Redundancy check in all-into-one case is trivial.
  41         existing=`cd "$PACKDIR" && \
  42             find . -type f \( -name '*.pack' -o -name '*.idx' \) -print`
  43         ;;
  44 esac
  45 pack_objects="$pack_objects $local $quiet $no_reuse_delta$extra"
  46 name=$(git-rev-list --objects --all $rev_list 2>&1 |
  47         git-pack-objects --non-empty $pack_objects .tmp-pack) ||
  48         exit 1
  49 if [ -z "$name" ]; then
  50         echo Nothing new to pack.
  51 else
  52         if test "$quiet" != '-q'; then
  53             echo "Pack pack-$name created."
  54         fi
  55         mkdir -p "$PACKDIR" || exit
  56
  57         for sfx in pack idx
  58         do
  59                 if test -f "$PACKDIR/pack-$name.$sfx"
  60                 then
  61                         mv -f "$PACKDIR/pack-$name.$sfx" \
  62                                 "$PACKDIR/old-pack-$name.$sfx"
  63                 fi
  64         done &&
  65         mv -f .tmp-pack-$name.pack "$PACKDIR/pack-$name.pack" &&
  66         mv -f .tmp-pack-$name.idx  "$PACKDIR/pack-$name.idx" &&
  67         test -f "$PACKDIR/pack-$name.pack" &&
  68         test -f "$PACKDIR/pack-$name.idx" || {
  69                 echo >&2 "Couldn't replace the existing pack with updated one."
  70                 echo >&2 "The original set of packs have been saved as"
  71                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
  72                 exit 1
  73         }
  74         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
  75 fi
  76
  77 if test "$remove_redundant" = t
  78 then
  79         # We know $existing are all redundant only when
  80         # all-into-one is used.
  81         if test "$all_into_one" != '' && test "$existing" != ''
  82         then
  83                 sync
  84                 ( cd "$PACKDIR" &&
  85                   for e in $existing
  86                   do
  87                         case "$e" in
  88                         ./pack-$name.pack | ./pack-$name.idx) ;;
  89                         *)      rm -f $e ;;
  90                         esac
  91                   done
  92                 )
  93         fi
  94         git-prune-packed
  95 fi
  96
  97 case "$no_update_info" in
  98 t) : ;;
  99 *) git-update-server-info ;;
 100 esac