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 ||
  47           echo "git-rev-list died with exit code $?"
  48         } |
  49         git-pack-objects --non-empty $pack_objects .tmp-pack) ||
  50         exit 1
  51 if [ -z "$name" ]; then
  52         echo Nothing new to pack.
  53 else
  54         if test "$quiet" != '-q'; then
  55             echo "Pack pack-$name created."
  56         fi
  57         mkdir -p "$PACKDIR" || exit
  58
  59         for sfx in pack idx
  60         do
  61                 if test -f "$PACKDIR/pack-$name.$sfx"
  62                 then
  63                         mv -f "$PACKDIR/pack-$name.$sfx" \
  64                                 "$PACKDIR/old-pack-$name.$sfx"
  65                 fi
  66         done &&
  67         mv -f .tmp-pack-$name.pack "$PACKDIR/pack-$name.pack" &&
  68         mv -f .tmp-pack-$name.idx  "$PACKDIR/pack-$name.idx" &&
  69         test -f "$PACKDIR/pack-$name.pack" &&
  70         test -f "$PACKDIR/pack-$name.idx" || {
  71                 echo >&2 "Couldn't replace the existing pack with updated one."
  72                 echo >&2 "The original set of packs have been saved as"
  73                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
  74                 exit 1
  75         }
  76         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
  77 fi
  78
  79 if test "$remove_redundant" = t
  80 then
  81         # We know $existing are all redundant only when
  82         # all-into-one is used.
  83         if test "$all_into_one" != '' && test "$existing" != ''
  84         then
  85                 sync
  86                 ( cd "$PACKDIR" &&
  87                   for e in $existing
  88                   do
  89                         case "$e" in
  90                         ./pack-$name.pack | ./pack-$name.idx) ;;
  91                         *)      rm -f $e ;;
  92                         esac
  93                   done
  94                 )
  95         fi
  96         git-prune-packed
  97 fi
  98
  99 case "$no_update_info" in
 100 t) : ;;
 101 *) git-update-server-info ;;
 102 esac