Support --strategy=x completion in addition to --strategy x.
[git] / git-repack.sh
1 #!/bin/sh
2 #
3 # Copyright (c) 2005 Linus Torvalds
4 #
5
6 USAGE='[-a] [-d] [-f] [-l] [-n] [-q] [--window=N] [--depth=N]'
7 SUBDIRECTORY_OK='Yes'
8 . git-sh-setup
9
10 no_update_info= all_into_one= remove_redundant=
11 local= quiet= no_reuse_delta= extra=
12 while case "$#" in 0) break ;; esac
13 do
14         case "$1" in
15         -n)     no_update_info=t ;;
16         -a)     all_into_one=t ;;
17         -d)     remove_redundant=t ;;
18         -q)     quiet=-q ;;
19         -f)     no_reuse_delta=--no-reuse-delta ;;
20         -l)     local=--local ;;
21         --window=*) extra="$extra $1" ;;
22         --depth=*) extra="$extra $1" ;;
23         *)      usage ;;
24         esac
25         shift
26 done
27
28 # Later we will default repack.UseDeltaBaseOffset to true
29 default_dbo=false
30
31 case "`git repo-config --bool repack.usedeltabaseoffset ||
32        echo $default_dbo`" in
33 true)
34         extra="$extra --delta-base-offset" ;;
35 esac
36
37 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
38 PACKTMP="$GIT_DIR/.tmp-$$-pack"
39 rm -f "$PACKTMP"-*
40 trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
41
42 # There will be more repacking strategies to come...
43 case ",$all_into_one," in
44 ,,)
45         args='--unpacked --incremental'
46         ;;
47 ,t,)
48         if [ -d "$PACKDIR" ]; then
49                 for e in `cd "$PACKDIR" && find . -type f -name '*.pack' \
50                         | sed -e 's/^\.\///' -e 's/\.pack$//'`
51                 do
52                         if [ -e "$PACKDIR/$e.keep" ]; then
53                                 : keep
54                         else
55                                 args="$args --unpacked=$e.pack"
56                                 existing="$existing $e"
57                         fi
58                 done
59         fi
60         [ -z "$args" ] && args='--unpacked --incremental'
61         ;;
62 esac
63
64 args="$args $local $quiet $no_reuse_delta$extra"
65 name=$(git-pack-objects --non-empty --all $args </dev/null "$PACKTMP") ||
66         exit 1
67 if [ -z "$name" ]; then
68         echo Nothing new to pack.
69 else
70         if test "$quiet" != '-q'; then
71             echo "Pack pack-$name created."
72         fi
73         mkdir -p "$PACKDIR" || exit
74
75         for sfx in pack idx
76         do
77                 if test -f "$PACKDIR/pack-$name.$sfx"
78                 then
79                         mv -f "$PACKDIR/pack-$name.$sfx" \
80                                 "$PACKDIR/old-pack-$name.$sfx"
81                 fi
82         done &&
83         mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
84         mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
85         test -f "$PACKDIR/pack-$name.pack" &&
86         test -f "$PACKDIR/pack-$name.idx" || {
87                 echo >&2 "Couldn't replace the existing pack with updated one."
88                 echo >&2 "The original set of packs have been saved as"
89                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
90                 exit 1
91         }
92         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
93 fi
94
95 if test "$remove_redundant" = t
96 then
97         # We know $existing are all redundant.
98         if [ -n "$existing" ]
99         then
100                 sync
101                 ( cd "$PACKDIR" &&
102                   for e in $existing
103                   do
104                         case "$e" in
105                         pack-$name) ;;
106                         *)      rm -f "$e.pack" "$e.idx" "$e.keep" ;;
107                         esac
108                   done
109                 )
110         fi
111         git-prune-packed
112 fi
113
114 case "$no_update_info" in
115 t) : ;;
116 *) git-update-server-info ;;
117 esac