1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
#!/bin/sh
set -eu
usage() {
printf 'Usage: %s -p PROFILE -c "COMMAND"\n' "$0"
}
help() {
echo '
Options:
-p profile to be used for gathering and storing data
-c command to be run, reading from STDIN, writing to STDOUT
-h show this help
-V print program version
See manpages for more information.'
}
version() {
echo 'remembering-@VERSION@ @DATE@'
}
missing() {
printf 'Missing option: %s\n' "$1" >&2
}
# shellcheck disable=2068
for flag in $@; do
if [ "$flag" = '--help' ]; then
usage
help
exit 0
elif [ "$flag" = '--version' ]; then
version
exit 0
fi
done
COMMANDFLAG=
PROFILEFLAG=
while getopts 'hc:p:V' name; do
case "$name" in
c)
COMMANDFLAG="$OPTARG"
;;
p)
PROFILEFLAG="$OPTARG"
;;
h)
usage
help
exit
;;
V)
version
exit
;;
*)
echo "Ignoring unrecognized flag '$name'" >&2
;;
esac
done
if [ -z "$COMMANDFLAG" ]; then
missing '-c "COMMAND"'
usage >&2
exit 2
fi
if [ -z "$PROFILEFLAG" ]; then
missing '-p PROFILE'
usage >&2
exit 2
fi
COMMAND="$COMMANDFLAG"
PROFILE="${XDG_DATA_HOME:-$HOME/.local/share/remembering}/$PROFILEFLAG"
if [ ! -e "$PROFILE" ]; then
mkdir -p "$(dirname "$PROFILE")"
touch "$PROFILE"
fi
MERGED="$(mktemp)"
FILTERED="$(mktemp)"
SORTED_STDIN="$(mktemp)"
cat - > "$SORTED_STDIN"
# sed line to reverse lines, replacing GNU/Linux's tac
# Taken from:
# https://unix.stackexchange.com/questions/280685/reverse-sequence-of-a-file-with-posix-tools/280686#comment601716_280686
xargs -I{} printf '0:%s\n' "{}" < "$SORTED_STDIN" | \
sort -t: -k2,2 -m - "$PROFILE" | \
sed '1!x;H;1h;$!d;g' | \
sort -t: -k2,2 -u > "$MERGED"
xargs -I{} printf 'filter_marker:%s\n' "{}" < "$SORTED_STDIN" | \
cat - "$PROFILE" | \
sort -t: -k2,2 | \
awk '{
split($0, l, ":")
rank = l[1]
entry = substr($0, length(rank) + 2)
if (rank != "filter_marker") {
prev_rank = rank
prev_entry = entry
} else {
if (prev_entry == entry) {
print prev_rank ":" entry
} else {
print "0:" entry
}
}
}' > "$FILTERED"
CHOICE="$(sort -t: -k1nr,1 -k2,2 < "$FILTERED" | \
cut -d: -f2- | \
sh -c "$COMMAND")"
if [ -n "$CHOICE" ]; then
NEW_PROFILE="$(mktemp)"
awk -v choice="$CHOICE" '{
split($0, l, ":")
rank = l[1]
entry = substr($0, length(rank) + 2)
if (entry == choice) {
# Naively increment ranking by one
print rank + 1 ":" entry
} else {
print rank ":" entry
}
}' "$MERGED" > "$NEW_PROFILE"
mv "$NEW_PROFILE" "$PROFILE"
echo "$CHOICE"
fi
|
