Guard a few Makefile variables against user environments
[git/gitweb.git] / git-repack.sh
blob0144c2d7b95d5393b7993c95e6aff46f18f01e8b
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 ",$all_into_one," in
59 ,,)
60 args='--unpacked --incremental'
62 ,t,)
63 args= existing=
64 if [ -d "$PACKDIR" ]; then
65 for e in `cd "$PACKDIR" && find . -type f -name '*.pack' \
66 | sed -e 's/^\.\///' -e 's/\.pack$//'`
68 if [ -e "$PACKDIR/$e.keep" ]; then
69 : keep
70 else
71 existing="$existing $e"
73 done
74 if test -n "$existing"
75 then
76 args="--kept-pack-only"
78 if test -n "$args" -a -n "$unpack_unreachable" -a \
79 -n "$remove_redundant"
80 then
81 args="$args $unpack_unreachable"
85 esac
87 args="$args $local $quiet $no_reuse$extra"
88 names=$(git pack-objects --honor-pack-keep --non-empty --all --reflog $args </dev/null "$PACKTMP") ||
89 exit 1
90 if [ -z "$names" ]; then
91 if test -z "$quiet"; then
92 echo Nothing new to pack.
96 # Ok we have prepared all new packfiles.
97 mkdir -p "$PACKDIR" || exit
99 # First see if there are packs of the same name and if so
100 # if we can move them out of the way (this can happen if we
101 # repacked immediately after packing fully.
102 rollback=
103 failed=
104 for name in $names
106 for sfx in pack idx
108 file=pack-$name.$sfx
109 test -f "$PACKDIR/$file" || continue
110 rm -f "$PACKDIR/old-$file" &&
111 mv "$PACKDIR/$file" "$PACKDIR/old-$file" || {
112 failed=t
113 break
115 rollback="$rollback $file"
116 done
117 test -z "$failed" || break
118 done
120 # If renaming failed for any of them, roll the ones we have
121 # already renamed back to their original names.
122 if test -n "$failed"
123 then
124 rollback_failure=
125 for file in $rollback
127 mv "$PACKDIR/old-$file" "$PACKDIR/$file" ||
128 rollback_failure="$rollback_failure $file"
129 done
130 if test -n "$rollback_failure"
131 then
132 echo >&2 "WARNING: Some packs in use have been renamed by"
133 echo >&2 "WARNING: prefixing old- to their name, in order to"
134 echo >&2 "WARNING: replace them with the new version of the"
135 echo >&2 "WARNING: file. But the operation failed, and"
136 echo >&2 "WARNING: attempt to rename them back to their"
137 echo >&2 "WARNING: original names also failed."
138 echo >&2 "WARNING: Please rename them in $PACKDIR manually:"
139 for file in $rollback_failure
141 echo >&2 "WARNING: old-$file -> $file"
142 done
144 exit 1
147 # Now the ones with the same name are out of the way...
148 fullbases=
149 for name in $names
151 fullbases="$fullbases pack-$name"
152 chmod a-w "$PACKTMP-$name.pack"
153 chmod a-w "$PACKTMP-$name.idx"
154 mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
155 mv -f "$PACKTMP-$name.idx" "$PACKDIR/pack-$name.idx" ||
156 exit
157 done
159 # Remove the "old-" files
160 for name in $names
162 rm -f "$PACKDIR/old-pack-$name.idx"
163 rm -f "$PACKDIR/old-pack-$name.pack"
164 done
166 # End of pack replacement.
168 if test "$remove_redundant" = t
169 then
170 # We know $existing are all redundant.
171 if [ -n "$existing" ]
172 then
173 ( cd "$PACKDIR" &&
174 for e in $existing
176 case " $fullbases " in
177 *" $e "*) ;;
178 *) rm -f "$e.pack" "$e.idx" "$e.keep" ;;
179 esac
180 done
183 git prune-packed $quiet
186 case "$no_update_info" in
187 t) : ;;
188 *) git-update-server-info ;;
189 esac