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