Merge branch 'sb/am-tests'
[git] / git-repack.sh
1 #!/bin/sh
2 #
3 # Copyright (c) 2005 Linus Torvalds
4 #
5
6 OPTIONS_KEEPDASHDASH=
7 OPTIONS_SPEC="\
8 git-repack [options]
9 --
10 a               pack everything in a single pack
11 A               same as -a, and turn unreachable objects loose
12 d               remove redundant packs, and run git-prune-packed
13 f               pass --no-reuse-delta to git-pack-objects
14 n               do not run git-update-server-info
15 q,quiet         be quiet
16 l               pass --local to git-pack-objects
17  Packing constraints
18 window=         size of the window used for delta compression
19 window-memory=  same as the above, but limit memory size instead of entries count
20 depth=          limits the maximum delta depth
21 max-pack-size=  maximum size of each packfile
22 "
23 SUBDIRECTORY_OK='Yes'
24 . git-sh-setup
25
26 no_update_info= all_into_one= remove_redundant= unpack_unreachable=
27 local= quiet= no_reuse= extra=
28 while test $# != 0
29 do
30         case "$1" in
31         -n)     no_update_info=t ;;
32         -a)     all_into_one=t ;;
33         -A)     all_into_one=t
34                 unpack_unreachable=--unpack-unreachable ;;
35         -d)     remove_redundant=t ;;
36         -q)     quiet=-q ;;
37         -f)     no_reuse=--no-reuse-object ;;
38         -l)     local=--local ;;
39         --max-pack-size|--window|--window-memory|--depth)
40                 extra="$extra $1=$2"; shift ;;
41         --) shift; break;;
42         *)      usage ;;
43         esac
44         shift
45 done
46
47 # Later we will default repack.UseDeltaBaseOffset to true
48 default_dbo=false
49
50 case "`git config --bool repack.usedeltabaseoffset ||
51        echo $default_dbo`" in
52 true)
53         extra="$extra --delta-base-offset" ;;
54 esac
55
56 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
57 PACKTMP="$GIT_OBJECT_DIRECTORY/.tmp-$$-pack"
58 rm -f "$PACKTMP"-*
59 trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
60
61 # There will be more repacking strategies to come...
62 case ",$all_into_one," in
63 ,,)
64         args='--unpacked --incremental'
65         ;;
66 ,t,)
67         if [ -d "$PACKDIR" ]; then
68                 for e in `cd "$PACKDIR" && find . -type f -name '*.pack' \
69                         | sed -e 's/^\.\///' -e 's/\.pack$//'`
70                 do
71                         if [ -e "$PACKDIR/$e.keep" ]; then
72                                 : keep
73                         else
74                                 args="$args --unpacked=$e.pack"
75                                 existing="$existing $e"
76                         fi
77                 done
78         fi
79         if test -z "$args"
80         then
81                 args='--unpacked --incremental'
82         elif test -n "$unpack_unreachable"
83         then
84                 args="$args $unpack_unreachable"
85         fi
86         ;;
87 esac
88
89 args="$args $local $quiet $no_reuse$extra"
90 names=$(git pack-objects --non-empty --all --reflog $args </dev/null "$PACKTMP") ||
91         exit 1
92 if [ -z "$names" ]; then
93         if test -z "$quiet"; then
94                 echo Nothing new to pack.
95         fi
96 fi
97 for name in $names ; do
98         fullbases="$fullbases pack-$name"
99         chmod a-w "$PACKTMP-$name.pack"
100         chmod a-w "$PACKTMP-$name.idx"
101         mkdir -p "$PACKDIR" || exit
102
103         for sfx in pack idx
104         do
105                 if test -f "$PACKDIR/pack-$name.$sfx"
106                 then
107                         mv -f "$PACKDIR/pack-$name.$sfx" \
108                                 "$PACKDIR/old-pack-$name.$sfx"
109                 fi
110         done &&
111         mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
112         mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
113         test -f "$PACKDIR/pack-$name.pack" &&
114         test -f "$PACKDIR/pack-$name.idx" || {
115                 echo >&2 "Couldn't replace the existing pack with updated one."
116                 echo >&2 "The original set of packs have been saved as"
117                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
118                 exit 1
119         }
120         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
121 done
122
123 if test "$remove_redundant" = t
124 then
125         # We know $existing are all redundant.
126         if [ -n "$existing" ]
127         then
128                 ( cd "$PACKDIR" &&
129                   for e in $existing
130                   do
131                         case " $fullbases " in
132                         *" $e "*) ;;
133                         *)      rm -f "$e.pack" "$e.idx" "$e.keep" ;;
134                         esac
135                   done
136                 )
137         fi
138         git prune-packed $quiet
139 fi
140
141 case "$no_update_info" in
142 t) : ;;
143 *) git-update-server-info ;;
144 esac