blob: cf176aa789ec05ca9954d74511a25719be2c1932 (
plain)
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
|
#!/bin/sh
set -eu
input_to_db()
{
local input=
local db=
input="$(mktemp)" || return 1
cat - 1>"${input}" || { rm -f "${input}"; return 1; }
if file "${input}" | grep -Fq SQLite; then
# Input still a database: use it directly.
db="${input}"
else
# Input already dumped to SQL: enter it into temporary database.
db="$(mktemp)" || { rm -f "${input}"; return 1; }
sqlite3 "${db}" 0<"${input}" || { rm -f "${input}"; return 1; }
rm -f "${input}" || { rm -f "${db}"; return 1; }
fi
printf '%s' "${db}"
return 0
}
del_from_db()
{
local db="${1}"
local spec="${2}"
shift 2
local table=
local column=
local value=
value="${spec#*=}"
spec="${spec%%=*}"
table="${spec%%.*}"
column="${spec#*.}"
sqlite3 "${db}" "DELETE FROM ${table} WHERE ${column} = ${value};" || \
return 1
return 0
}
db_to_sql()
{
local db="${1}"
shift 1
sqlite3 "${db}" '.dump' || return 1
return 0
}
usage()
{
printf 'Usage: %s [<table>.<column>=<value> ...]\n' "${0}"
return 0
}
main()
{
local arg=
local db=
for arg in "${@}"; do
case "${arg}" in
?*.?*=?*);;
*) usage 1>&2; return 1;;
esac
done
db="$(input_to_db)" || return 1
for arg in "${@}"; do
del_from_db "${db}" "${arg}" || { rm -f "${db}"; return 1; }
done
db_to_sql "${db}" || { rm -f "${db}"; return 1; }
rm -f "${db}" || return 1
return 0
}
main "${@}"
|
