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ab8e2a67 TA |
1 | # |
2 | # divert_link <prefix> <suffix> | |
3 | # | |
4 | # Ensures that the file <prefix><suffix> is properly diverted to | |
5 | # <prefix>.divert-orig<suffix> by this package, and becomes a | |
6 | # symbolic link to either <prefix>.divert<suffix> (default) or | |
7 | # <prefix>.divert-orig<suffix>. | |
8 | # | |
9 | # undivert_unlink <prefix> <suffix> | |
10 | # | |
11 | # Undoes the action of divert_link <prefix> <suffix> specified | |
12 | # above. | |
13 | # | |
936cb21e | 14 | # Version: 4.0 |
ab8e2a67 | 15 | # |
9447ea83 AK |
16 | # Copyright © 2008–2012 Tim Abbott <tabbott@mit.edu> and Anders |
17 | # Kaseorg <andersk@mit.edu> | |
18 | # | |
19 | # Permission is hereby granted, free of charge, to any person | |
20 | # obtaining a copy of this software and associated documentation files | |
21 | # (the “Software”), to deal in the Software without restriction, | |
22 | # including without limitation the rights to use, copy, modify, merge, | |
23 | # publish, distribute, sublicense, and/or sell copies of the Software, | |
24 | # and to permit persons to whom the Software is furnished to do so, | |
25 | # subject to the following conditions: | |
26 | # | |
27 | # The above copyright notice and this permission notice shall be | |
28 | # included in all copies or substantial portions of the Software. | |
29 | # | |
30 | # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, | |
31 | # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
32 | # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
33 | # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
34 | # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
35 | # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
36 | # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
37 | # SOFTWARE. | |
38 | # | |
ab8e2a67 TA |
39 | |
40 | package=#PACKAGE# | |
41 | ||
42 | ours=#DEB_DIVERT_EXTENSION# | |
43 | theirs=#DEB_DIVERT_EXTENSION#-orig | |
44 | ||
936cb21e | 45 | divert_link_divert() |
ab8e2a67 | 46 | { |
936cb21e TA |
47 | file=$1 |
48 | ourfile=$2 | |
49 | theirfile=$3 | |
dd49a2d5 | 50 | if ! LC_ALL=C dpkg-divert --list "$package" | \ |
ab8e2a67 TA |
51 | grep -xFq "diversion of $file to $theirfile by $package"; then |
52 | dpkg-divert --divert "$theirfile" --rename --package "$package" --add "$file" | |
53 | fi | |
936cb21e TA |
54 | } |
55 | ||
56 | divert_link_symlink() | |
57 | { | |
58 | file=$1 | |
59 | ourfile=$2 | |
60 | theirfile=$3 | |
ab8e2a67 TA |
61 | if [ ! -L "$file" ] && [ ! -e "$file" ]; then |
62 | ln -s "$(basename "$ourfile")" "$file" | |
63 | elif [ ! -L "$file" ] || \ | |
64 | [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \ | |
65 | "$(readlink "$file")" != "$(basename "$theirfile")" ]; then | |
66 | echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2 | |
67 | fi | |
68 | } | |
69 | ||
936cb21e | 70 | divert_link() |
ab8e2a67 TA |
71 | { |
72 | prefix=$1 | |
73 | suffix=$2 | |
74 | ||
75 | file=$prefix$suffix | |
76 | ourfile=$prefix$ours$suffix | |
77 | theirfile=$prefix$theirs$suffix | |
936cb21e TA |
78 | divert_link_divert "$file" "$ourfile" "$theirfile" |
79 | divert_link_symlink "$file" "$ourfile" "$theirfile" | |
80 | } | |
ab8e2a67 | 81 | |
936cb21e TA |
82 | divert_remove() |
83 | { | |
84 | file=$1 | |
85 | ourfile="" | |
86 | theirfile=$2 | |
87 | divert_link_divert "$file" "$ourfile" "$theirfile" | |
88 | } | |
89 | ||
90 | undivert_unlink_symlink() | |
91 | { | |
92 | file="$1" | |
93 | ourfile="$2" | |
94 | theirfile="$3" | |
ab8e2a67 TA |
95 | if [ ! -L "$file" ] || \ |
96 | [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \ | |
97 | "$(readlink "$file")" != "$(basename "$theirfile")" ]; then | |
98 | echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2 | |
99 | else | |
100 | rm -f "$file" | |
101 | fi | |
936cb21e TA |
102 | } |
103 | ||
104 | undivert_unlink_divert() | |
105 | { | |
106 | file="$1" | |
ab8e2a67 TA |
107 | if [ ! -L "$file" ] && [ ! -e "$file" ]; then |
108 | dpkg-divert --remove --rename --package "$package" "$file" | |
109 | else | |
110 | echo "Not removing diversion of $file by $package" >&2 | |
111 | fi | |
112 | } | |
113 | ||
936cb21e TA |
114 | undivert_unlink() |
115 | { | |
116 | prefix=$1 | |
117 | suffix=$2 | |
118 | ||
119 | file=$prefix$suffix | |
120 | ourfile=$prefix$ours$suffix | |
121 | theirfile=$prefix$theirs$suffix | |
122 | ||
123 | undivert_unlink_symlink "$file" "$ourfile" "$theirfile" | |
bb79498c | 124 | undivert_unlink_divert "$file" |
936cb21e TA |
125 | } |
126 | ||
127 | undivert_unremove() | |
128 | { | |
129 | file=$1 | |
130 | undivert_unlink_divert "$file" | |
131 | } | |
132 | ||
50bf7563 AK |
133 | check_undivert_unlink() |
134 | { | |
135 | prefix=$1 | |
136 | suffix=$2 | |
137 | ||
138 | file=$prefix$suffix | |
139 | ourfile=$prefix$ours$suffix | |
140 | theirfile=$prefix$theirs$suffix | |
141 | ||
dd49a2d5 | 142 | if LC_ALL=C dpkg-divert --list "$package" | \ |
50bf7563 AK |
143 | grep -xFq "diversion of $file to $theirfile by $package"; then |
144 | undivert_unlink "$prefix" "$suffix" | |
145 | fi | |
146 | } | |
147 | ||
148 | check_undivert_unremove() | |
149 | { | |
150 | file=$1 | |
151 | removedfile=$2 | |
dd49a2d5 | 152 | if LC_ALL=C dpkg-divert --list "$package" | \ |
50bf7563 AK |
153 | grep -xFq "diversion of $file to $removedfile by $package"; then |
154 | undivert_unremove "$file" | |
155 | fi | |
156 | } |