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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-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 | Packing constraints | |
19 | window= size of the window used for delta compression | |
20 | window-memory= same as the above, but limit memory size instead of entries count | |
21 | depth= limits the maximum delta depth | |
22 | max-pack-size= maximum size of each packfile | |
23 | " | |
24 | SUBDIRECTORY_OK='Yes' | |
25 | . git-sh-setup | |
26 | ||
27 | no_update_info= all_into_one= remove_redundant= unpack_unreachable= | |
28 | local= no_reuse= extra= | |
29 | while test $# != 0 | |
30 | do | |
31 | case "$1" in | |
32 | -n) no_update_info=t ;; | |
33 | -a) all_into_one=t ;; | |
34 | -A) all_into_one=t | |
35 | unpack_unreachable=--unpack-unreachable ;; | |
36 | -d) remove_redundant=t ;; | |
37 | -q) GIT_QUIET=t ;; | |
38 | -f) no_reuse=--no-reuse-delta ;; | |
39 | -F) no_reuse=--no-reuse-object ;; | |
40 | -l) local=--local ;; | |
41 | --max-pack-size|--window|--window-memory|--depth) | |
42 | extra="$extra $1=$2"; shift ;; | |
43 | --) shift; break;; | |
44 | *) usage ;; | |
45 | esac | |
46 | shift | |
47 | done | |
48 | ||
49 | case "`git config --bool repack.usedeltabaseoffset || echo true`" in | |
50 | true) | |
51 | extra="$extra --delta-base-offset" ;; | |
52 | esac | |
53 | ||
54 | PACKDIR="$GIT_OBJECT_DIRECTORY/pack" | |
55 | PACKTMP="$PACKDIR/.tmp-$$-pack" | |
56 | rm -f "$PACKTMP"-* | |
57 | trap 'rm -f "$PACKTMP"-*' 0 1 2 3 15 | |
58 | ||
59 | # There will be more repacking strategies to come... | |
60 | case ",$all_into_one," in | |
61 | ,,) | |
62 | args='--unpacked --incremental' | |
63 | ;; | |
64 | ,t,) | |
65 | args= existing= | |
66 | if [ -d "$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 | existing="$existing $e" | |
74 | fi | |
75 | done | |
76 | if test -n "$existing" -a -n "$unpack_unreachable" -a \ | |
77 | -n "$remove_redundant" | |
78 | then | |
79 | args="$args $unpack_unreachable" | |
80 | fi | |
81 | fi | |
82 | ;; | |
83 | esac | |
84 | ||
85 | mkdir -p "$PACKDIR" || exit | |
86 | ||
87 | args="$args $local ${GIT_QUIET:+-q} $no_reuse$extra" | |
88 | names=$(git pack-objects --keep-true-parents --honor-pack-keep --non-empty --all --reflog $args </dev/null "$PACKTMP") || | |
89 | exit 1 | |
90 | if [ -z "$names" ]; then | |
91 | say Nothing new to pack. | |
92 | fi | |
93 | ||
94 | # Ok we have prepared all new packfiles. | |
95 | ||
96 | # First see if there are packs of the same name and if so | |
97 | # if we can move them out of the way (this can happen if we | |
98 | # repacked immediately after packing fully. | |
99 | rollback= | |
100 | failed= | |
101 | for name in $names | |
102 | do | |
103 | for sfx in pack idx | |
104 | do | |
105 | file=pack-$name.$sfx | |
106 | test -f "$PACKDIR/$file" || continue | |
107 | rm -f "$PACKDIR/old-$file" && | |
108 | mv "$PACKDIR/$file" "$PACKDIR/old-$file" || { | |
109 | failed=t | |
110 | break | |
111 | } | |
112 | rollback="$rollback $file" | |
113 | done | |
114 | test -z "$failed" || break | |
115 | done | |
116 | ||
117 | # If renaming failed for any of them, roll the ones we have | |
118 | # already renamed back to their original names. | |
119 | if test -n "$failed" | |
120 | then | |
121 | rollback_failure= | |
122 | for file in $rollback | |
123 | do | |
124 | mv "$PACKDIR/old-$file" "$PACKDIR/$file" || | |
125 | rollback_failure="$rollback_failure $file" | |
126 | done | |
127 | if test -n "$rollback_failure" | |
128 | then | |
129 | echo >&2 "WARNING: Some packs in use have been renamed by" | |
130 | echo >&2 "WARNING: prefixing old- to their name, in order to" | |
131 | echo >&2 "WARNING: replace them with the new version of the" | |
132 | echo >&2 "WARNING: file. But the operation failed, and" | |
133 | echo >&2 "WARNING: attempt to rename them back to their" | |
134 | echo >&2 "WARNING: original names also failed." | |
135 | echo >&2 "WARNING: Please rename them in $PACKDIR manually:" | |
136 | for file in $rollback_failure | |
137 | do | |
138 | echo >&2 "WARNING: old-$file -> $file" | |
139 | done | |
140 | fi | |
141 | exit 1 | |
142 | fi | |
143 | ||
144 | # Now the ones with the same name are out of the way... | |
145 | fullbases= | |
146 | for name in $names | |
147 | do | |
148 | fullbases="$fullbases pack-$name" | |
149 | chmod a-w "$PACKTMP-$name.pack" | |
150 | chmod a-w "$PACKTMP-$name.idx" | |
151 | mv -f "$PACKTMP-$name.pack" "$PACKDIR/pack-$name.pack" && | |
152 | mv -f "$PACKTMP-$name.idx" "$PACKDIR/pack-$name.idx" || | |
153 | exit | |
154 | done | |
155 | ||
156 | # Remove the "old-" files | |
157 | for name in $names | |
158 | do | |
159 | rm -f "$PACKDIR/old-pack-$name.idx" | |
160 | rm -f "$PACKDIR/old-pack-$name.pack" | |
161 | done | |
162 | ||
163 | # End of pack replacement. | |
164 | ||
165 | if test "$remove_redundant" = t | |
166 | then | |
167 | # We know $existing are all redundant. | |
168 | if [ -n "$existing" ] | |
169 | then | |
170 | ( cd "$PACKDIR" && | |
171 | for e in $existing | |
172 | do | |
173 | case " $fullbases " in | |
174 | *" $e "*) ;; | |
175 | *) rm -f "$e.pack" "$e.idx" "$e.keep" ;; | |
176 | esac | |
177 | done | |
178 | ) | |
179 | fi | |
180 | git prune-packed ${GIT_QUIET:+-q} | |
181 | fi | |
182 | ||
183 | case "$no_update_info" in | |
184 | t) : ;; | |
185 | *) git update-server-info ;; | |
186 | esac |