Merge git://git.kernel.org/pub/scm/gitk/gitk
[git/git.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-object 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=$2"; shift ;;
41 --) shift; break;;
42 *) usage ;;
43 esac
44 shift
45 done
46
47 case "`git config --bool repack.usedeltabaseoffset || echo true`" in
48 true)
49 extra="$extra --delta-base-offset" ;;
50 esac
51
52 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
53 PACKTMP="$GIT_OBJECT_DIRECTORY/.tmp-$$-pack"
54 rm -f "$PACKTMP"-*
55 trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
56
57 # There will be more repacking strategies to come...
58 case ",$all_into_one," in
59 ,,)
60 args='--unpacked --incremental'
61 ;;
62 ,t,)
63 if [ -d "$PACKDIR" ]; then
64 for e in `cd "$PACKDIR" && find . -type f -name '*.pack' \
65 | sed -e 's/^\.\///' -e 's/\.pack$//'`
66 do
67 if [ -e "$PACKDIR/$e.keep" ]; then
68 : keep
69 else
70 args="$args --unpacked=$e.pack"
71 existing="$existing $e"
72 fi
73 done
74 if test -n "$args" -a -n "$unpack_unreachable" -a \
75 -n "$remove_redundant"
76 then
77 args="$args $unpack_unreachable"
78 fi
79 fi
80 ;;
81 esac
82
83 args="$args $local $quiet $no_reuse$extra"
84 names=$(git pack-objects --honor-pack-keep --non-empty --all --reflog $args </dev/null "$PACKTMP") ||
85 exit 1
86 if [ -z "$names" ]; then
87 if test -z "$quiet"; then
88 echo Nothing new to pack.
89 fi
90 fi
91 for name in $names ; do
92 fullbases="$fullbases pack-$name"
93 chmod a-w "$PACKTMP-$name.pack"
94 chmod a-w "$PACKTMP-$name.idx"
95 mkdir -p "$PACKDIR" || exit
96
97 for sfx in pack idx
98 do
99 if test -f "$PACKDIR/pack-$name.$sfx"
100 then
101 mv -f "$PACKDIR/pack-$name.$sfx" \
102 "$PACKDIR/old-pack-$name.$sfx"
103 fi
104 done &&
105 mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
106 mv -f "$PACKTMP-$name.idx" "$PACKDIR/pack-$name.idx" &&
107 test -f "$PACKDIR/pack-$name.pack" &&
108 test -f "$PACKDIR/pack-$name.idx" || {
109 echo >&2 "Couldn't replace the existing pack with updated one."
110 echo >&2 "The original set of packs have been saved as"
111 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
112 exit 1
113 }
114 rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
115 done
116
117 if test "$remove_redundant" = t
118 then
119 # We know $existing are all redundant.
120 if [ -n "$existing" ]
121 then
122 ( cd "$PACKDIR" &&
123 for e in $existing
124 do
125 case " $fullbases " in
126 *" $e "*) ;;
127 *) rm -f "$e.pack" "$e.idx" "$e.keep" ;;
128 esac
129 done
130 )
131 fi
132 git prune-packed $quiet
133 fi
134
135 case "$no_update_info" in
136 t) : ;;
137 *) git-update-server-info ;;
138 esac