Andrew's git - gitweb.git/blob

   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Linus Torvalds
   4#
   5
   6USAGE='[-a] [-d] [-f] [-l] [-n] [-q] [--window=N] [--depth=N]'
   7. git-sh-setup
   8
   9no_update_info= all_into_one= remove_redundant=
  10local= quiet= no_reuse_delta= extra=
  11while case "$#" in 0) break ;; esac
  12do
  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
  25done
  26
  27# Later we will default repack.UseDeltaBaseOffset to true
  28default_dbo=false
  29
  30case "`git repo-config --bool repack.usedeltabaseoffset ||
  31       echo $default_dbo`" in
  32true)
  33        extra="$extra --delta-base-offset" ;;
  34esac
  35
  36PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
  37PACKTMP="$GIT_DIR/.tmp-$$-pack"
  38rm -f "$PACKTMP"-*
  39trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
  40
  41# There will be more repacking strategies to come...
  42case ",$all_into_one," in
  43,,)
  44        rev_list='--unpacked'
  45        pack_objects='--incremental'
  46        ;;
  47,t,)
  48        rev_list=
  49        pack_objects=
  50
  51        # Redundancy check in all-into-one case is trivial.
  52        existing=`test -d "$PACKDIR" && cd "$PACKDIR" && \
  53            find . -type f \( -name '*.pack' -o -name '*.idx' \) -print`
  54        ;;
  55esac
  56
  57pack_objects="$pack_objects $local $quiet $no_reuse_delta$extra"
  58name=$( { git-rev-list --objects --all $rev_list ||
  59          echo "git-rev-list died with exit code $?"
  60        } |
  61        git-pack-objects --non-empty $pack_objects "$PACKTMP") ||
  62        exit 1
  63if [ -z "$name" ]; then
  64        echo Nothing new to pack.
  65else
  66        if test "$quiet" != '-q'; then
  67            echo "Pack pack-$name created."
  68        fi
  69        mkdir -p "$PACKDIR" || exit
  70
  71        for sfx in pack idx
  72        do
  73                if test -f "$PACKDIR/pack-$name.$sfx"
  74                then
  75                        mv -f "$PACKDIR/pack-$name.$sfx" \
  76                                "$PACKDIR/old-pack-$name.$sfx"
  77                fi
  78        done &&
  79        mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
  80        mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
  81        test -f "$PACKDIR/pack-$name.pack" &&
  82        test -f "$PACKDIR/pack-$name.idx" || {
  83                echo >&2 "Couldn't replace the existing pack with updated one."
  84                echo >&2 "The original set of packs have been saved as"
  85                echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
  86                exit 1
  87        }
  88        rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
  89fi
  90
  91if test "$remove_redundant" = t
  92then
  93        # We know $existing are all redundant only when
  94        # all-into-one is used.
  95        if test "$all_into_one" != '' && test "$existing" != ''
  96        then
  97                sync
  98                ( cd "$PACKDIR" &&
  99                  for e in $existing
 100                  do
 101                        case "$e" in
 102                        ./pack-$name.pack | ./pack-$name.idx) ;;
 103                        *)      rm -f $e ;;
 104                        esac
 105                  done
 106                )
 107        fi
 108        git-prune-packed
 109fi
 110
 111case "$no_update_info" in
 112t) : ;;
 113*) git-update-server-info ;;
 114esac