rename_ref(): handle the case when the reflog of a ref does not exist
[git/dscho.git] / git-repack.sh
blobd39eb6cea6174ac65f1cc13c98e4abeab3a90903
1 #!/bin/sh
3 # Copyright (c) 2005 Linus Torvalds
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
23 SUBDIRECTORY_OK='Yes'
24 . git-sh-setup
26 no_update_info= all_into_one= remove_redundant= unpack_unreachable=
27 local= quiet= no_reuse= extra=
28 while test $# != 0
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=$2"; shift ;;
41         --) shift; break;;
42         *)      usage ;;
43         esac
44         shift
45 done
47 case "`git config --bool repack.usedeltabaseoffset || echo true`" in
48 true)
49         extra="$extra --delta-base-offset" ;;
50 esac
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
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 $e"
72                         fi
73                 done
74         fi
75         if test -z "$args"
76         then
77                 args='--unpacked --incremental'
78         elif test -n "$unpack_unreachable"
79         then
80                 args="$args $unpack_unreachable"
81         fi
82         ;;
83 esac
85 args="$args $local $quiet $no_reuse$extra"
86 names=$(git pack-objects --non-empty --all --reflog $args </dev/null "$PACKTMP") ||
87         exit 1
88 if [ -z "$names" ]; then
89         if test -z "$quiet"; then
90                 echo Nothing new to pack.
91         fi
93 for name in $names ; do
94         fullbases="$fullbases pack-$name"
95         chmod a-w "$PACKTMP-$name.pack"
96         chmod a-w "$PACKTMP-$name.idx"
97         mkdir -p "$PACKDIR" || exit
99         for sfx in pack idx
100         do
101                 if test -f "$PACKDIR/pack-$name.$sfx"
102                 then
103                         mv -f "$PACKDIR/pack-$name.$sfx" \
104                                 "$PACKDIR/old-pack-$name.$sfx"
105                 fi
106         done &&
107         mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
108         mv -f "$PACKTMP-$name.idx"  "$PACKDIR/pack-$name.idx" &&
109         test -f "$PACKDIR/pack-$name.pack" &&
110         test -f "$PACKDIR/pack-$name.idx" || {
111                 echo >&2 "Couldn't replace the existing pack with updated one."
112                 echo >&2 "The original set of packs have been saved as"
113                 echo >&2 "old-pack-$name.{pack,idx} in $PACKDIR."
114                 exit 1
115         }
116         rm -f "$PACKDIR/old-pack-$name.pack" "$PACKDIR/old-pack-$name.idx"
117 done
119 if test "$remove_redundant" = t
120 then
121         # We know $existing are all redundant.
122         if [ -n "$existing" ]
123         then
124                 ( cd "$PACKDIR" &&
125                   for e in $existing
126                   do
127                         case " $fullbases " in
128                         *" $e "*) ;;
129                         *)      rm -f "$e.pack" "$e.idx" "$e.keep" ;;
130                         esac
131                   done
132                 )
133         fi
134         git prune-packed $quiet
137 case "$no_update_info" in
138 t) : ;;
139 *) git-update-server-info ;;
140 esac