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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 | # | |
14 | # Version: 4.0 | |
15 | # | |
16 | ||
17 | package=#PACKAGE# | |
18 | ||
19 | ours=#DEB_DIVERT_EXTENSION# | |
20 | theirs=#DEB_DIVERT_EXTENSION#-orig | |
21 | ||
22 | divert_link_divert() | |
23 | { | |
24 | file=$1 | |
25 | ourfile=$2 | |
26 | theirfile=$3 | |
27 | if ! dpkg-divert --list "$package" | \ | |
28 | grep -xFq "diversion of $file to $theirfile by $package"; then | |
29 | dpkg-divert --divert "$theirfile" --rename --package "$package" --add "$file" | |
30 | fi | |
31 | } | |
32 | ||
33 | divert_link_symlink() | |
34 | { | |
35 | file=$1 | |
36 | ourfile=$2 | |
37 | theirfile=$3 | |
38 | if [ ! -L "$file" ] && [ ! -e "$file" ]; then | |
39 | ln -s "$(basename "$ourfile")" "$file" | |
40 | elif [ ! -L "$file" ] || \ | |
41 | [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \ | |
42 | "$(readlink "$file")" != "$(basename "$theirfile")" ]; then | |
43 | echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2 | |
44 | fi | |
45 | } | |
46 | ||
47 | divert_link() | |
48 | { | |
49 | prefix=$1 | |
50 | suffix=$2 | |
51 | ||
52 | file=$prefix$suffix | |
53 | ourfile=$prefix$ours$suffix | |
54 | theirfile=$prefix$theirs$suffix | |
55 | divert_link_divert "$file" "$ourfile" "$theirfile" | |
56 | divert_link_symlink "$file" "$ourfile" "$theirfile" | |
57 | } | |
58 | ||
59 | divert_remove() | |
60 | { | |
61 | file=$1 | |
62 | ourfile="" | |
63 | theirfile=$2 | |
64 | divert_link_divert "$file" "$ourfile" "$theirfile" | |
65 | } | |
66 | ||
67 | undivert_unlink_symlink() | |
68 | { | |
69 | file="$1" | |
70 | ourfile="$2" | |
71 | theirfile="$3" | |
72 | if [ ! -L "$file" ] || \ | |
73 | [ "$(readlink "$file")" != "$(basename "$ourfile")" -a \ | |
74 | "$(readlink "$file")" != "$(basename "$theirfile")" ]; then | |
75 | echo "*** OMINOUS WARNING ***: $file is not linked to either $(basename "$ourfile") or $(basename "$theirfile")" >&2 | |
76 | else | |
77 | rm -f "$file" | |
78 | fi | |
79 | } | |
80 | ||
81 | undivert_unlink_divert() | |
82 | { | |
83 | file="$1" | |
84 | if [ ! -L "$file" ] && [ ! -e "$file" ]; then | |
85 | dpkg-divert --remove --rename --package "$package" "$file" | |
86 | else | |
87 | echo "Not removing diversion of $file by $package" >&2 | |
88 | fi | |
89 | } | |
90 | ||
91 | undivert_unlink() | |
92 | { | |
93 | prefix=$1 | |
94 | suffix=$2 | |
95 | ||
96 | file=$prefix$suffix | |
97 | ourfile=$prefix$ours$suffix | |
98 | theirfile=$prefix$theirs$suffix | |
99 | ||
100 | undivert_unlink_symlink "$file" "$ourfile" "$theirfile" | |
101 | undivert_unlink_divert "$file" "$package" | |
102 | } | |
103 | ||
104 | undivert_unremove() | |
105 | { | |
106 | file=$1 | |
107 | undivert_unlink_divert "$file" | |
108 | } | |
109 |