Merge branch 'wk/man-deny-current-branch-is-default-these-days' into maint
[git/mingw.git] / git-repack.sh
blob757933174e4c17136f14a1fdd7c8c67c0a8bca50
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-delta to git-pack-objects
14 F pass --no-reuse-object to git-pack-objects
15 n do not run git-update-server-info
16 q,quiet be quiet
17 l pass --local to git-pack-objects
18 unpack-unreachable= with -A, do not loosen objects older than this
19 Packing constraints
20 window= size of the window used for delta compression
21 window-memory= same as the above, but limit memory size instead of entries count
22 depth= limits the maximum delta depth
23 max-pack-size= maximum size of each packfile
25 SUBDIRECTORY_OK='Yes'
26 . git-sh-setup
28 no_update_info= all_into_one= remove_redundant= unpack_unreachable=
29 local= no_reuse= extra=
30 while test $# != 0
32 case "$1" in
33 -n) no_update_info=t ;;
34 -a) all_into_one=t ;;
35 -A) all_into_one=t
36 unpack_unreachable=--unpack-unreachable ;;
37 --unpack-unreachable)
38 unpack_unreachable="--unpack-unreachable=$2"; shift ;;
39 -d) remove_redundant=t ;;
40 -q) GIT_QUIET=t ;;
41 -f) no_reuse=--no-reuse-delta ;;
42 -F) no_reuse=--no-reuse-object ;;
43 -l) local=--local ;;
44 --max-pack-size|--window|--window-memory|--depth)
45 extra="$extra $1=$2"; shift ;;
46 --) shift; break;;
47 *) usage ;;
48 esac
49 shift
50 done
52 case "`git config --bool repack.usedeltabaseoffset || echo true`" in
53 true)
54 extra="$extra --delta-base-offset" ;;
55 esac
57 PACKDIR="$GIT_OBJECT_DIRECTORY/pack"
58 PACKTMP="$PACKDIR/.tmp-$$-pack"
59 rm -f "$PACKTMP"-*
60 trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15
62 # There will be more repacking strategies to come...
63 case ",$all_into_one," in
64 ,,)
65 args='--unpacked --incremental'
67 ,t,)
68 args= existing=
69 if [ -d "$PACKDIR" ]; then
70 for e in `cd "$PACKDIR" && find . -type f -name '*.pack' \
71 | sed -e 's/^\.\///' -e 's/\.pack$//'`
73 if [ -e "$PACKDIR/$e.keep" ]; then
74 : keep
75 else
76 existing="$existing $e"
78 done
79 if test -n "$existing" -a -n "$unpack_unreachable" -a \
80 -n "$remove_redundant"
81 then
82 # This may have arbitrary user arguments, so we
83 # have to protect it against whitespace splitting
84 # when it gets run as "pack-objects $args" later.
85 # Fortunately, we know it's an approxidate, so we
86 # can just use dots instead.
87 args="$args $(echo "$unpack_unreachable" | tr ' ' .)"
91 esac
93 mkdir -p "$PACKDIR" || exit
95 args="$args $local ${GIT_QUIET:+-q} $no_reuse$extra"
96 names=$(git pack-objects --keep-true-parents --honor-pack-keep --non-empty --all --reflog $args </dev/null "$PACKTMP") ||
97 exit 1
98 if [ -z "$names" ]; then
99 say Nothing new to pack.
102 # Ok we have prepared all new packfiles.
104 # First see if there are packs of the same name and if so
105 # if we can move them out of the way (this can happen if we
106 # repacked immediately after packing fully.
107 rollback=
108 failed=
109 for name in $names
111 for sfx in pack idx
113 file=pack-$name.$sfx
114 test -f "$PACKDIR/$file" || continue
115 rm -f "$PACKDIR/old-$file" &&
116 mv "$PACKDIR/$file" "$PACKDIR/old-$file" || {
117 failed=t
118 break
120 rollback="$rollback $file"
121 done
122 test -z "$failed" || break
123 done
125 # If renaming failed for any of them, roll the ones we have
126 # already renamed back to their original names.
127 if test -n "$failed"
128 then
129 rollback_failure=
130 for file in $rollback
132 mv "$PACKDIR/old-$file" "$PACKDIR/$file" ||
133 rollback_failure="$rollback_failure $file"
134 done
135 if test -n "$rollback_failure"
136 then
137 echo >&2 "WARNING: Some packs in use have been renamed by"
138 echo >&2 "WARNING: prefixing old- to their name, in order to"
139 echo >&2 "WARNING: replace them with the new version of the"
140 echo >&2 "WARNING: file. But the operation failed, and"
141 echo >&2 "WARNING: attempt to rename them back to their"
142 echo >&2 "WARNING: original names also failed."
143 echo >&2 "WARNING: Please rename them in $PACKDIR manually:"
144 for file in $rollback_failure
146 echo >&2 "WARNING: old-$file -> $file"
147 done
149 exit 1
152 # Now the ones with the same name are out of the way...
153 fullbases=
154 for name in $names
156 fullbases="$fullbases pack-$name"
157 chmod a-w "$PACKTMP-$name.pack"
158 chmod a-w "$PACKTMP-$name.idx"
159 mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" &&
160 mv -f "$PACKTMP-$name.idx" "$PACKDIR/pack-$name.idx" ||
161 exit
162 done
164 # Remove the "old-" files
165 for name in $names
167 rm -f "$PACKDIR/old-pack-$name.idx"
168 rm -f "$PACKDIR/old-pack-$name.pack"
169 done
171 # End of pack replacement.
173 if test "$remove_redundant" = t
174 then
175 # We know $existing are all redundant.
176 if [ -n "$existing" ]
177 then
178 ( cd "$PACKDIR" &&
179 for e in $existing
181 case " $fullbases " in
182 *" $e "*) ;;
183 *) rm -f "$e.pack" "$e.idx" "$e.keep" ;;
184 esac
185 done
188 git prune-packed ${GIT_QUIET:+-q}
191 case "$no_update_info" in
192 t) : ;;
193 *) git update-server-info ;;
194 esac