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
|
module ActiveRecord
module ConnectionAdapters
class PostgreSQLColumn < Column
module Cast
def string_to_time(string)
return string unless String === string
case string
when 'infinity'; 1.0 / 0.0
when '-infinity'; -1.0 / 0.0
else
super
end
end
def hstore_to_string(object)
if Hash === object
object.map { |k,v|
"#{escape_hstore(k)}=>#{escape_hstore(v)}"
}.join ','
else
object
end
end
def string_to_hstore(string)
if string.nil?
nil
elsif String === string
Hash[string.scan(HstorePair).map { |k,v|
v = v.upcase == 'NULL' ? nil : v.gsub(/^"(.*)"$/,'\1').gsub(/\\(.)/, '\1')
k = k.gsub(/^"(.*)"$/,'\1').gsub(/\\(.)/, '\1')
[k,v]
}]
else
string
end
end
def json_to_string(object)
if Hash === object
ActiveSupport::JSON.encode(object)
else
object
end
end
def array_to_string(value, column, adapter, should_be_quoted = false)
casted_values = value.map do |val|
if String === val
if val == "NULL"
"\"#{val}\""
else
quote_and_escape(adapter.type_cast(val, column, true))
end
else
adapter.type_cast(val, column, true)
end
end
"{#{casted_values.join(',')}}"
end
def string_to_json(string)
if String === string
ActiveSupport::JSON.decode(string)
else
string
end
end
def string_to_cidr(string)
if string.nil?
nil
elsif String === string
IPAddr.new(string)
else
string
end
end
def cidr_to_string(object)
if IPAddr === object
"#{object.to_s}/#{object.instance_variable_get(:@mask_addr).to_s(2).count('1')}"
else
object
end
end
def string_to_array(string, oid)
parse_pg_array(string).map{|val| oid.type_cast val}
end
private
HstorePair = begin
quoted_string = /"[^"\\]*(?:\\.[^"\\]*)*"/
unquoted_string = /(?:\\.|[^\s,])[^\s=,\\]*(?:\\.[^\s=,\\]*|=[^,>])*/
/(#{quoted_string}|#{unquoted_string})\s*=>\s*(#{quoted_string}|#{unquoted_string})/
end
def escape_hstore(value)
if value.nil?
'NULL'
else
if value == ""
'""'
else
'"%s"' % value.to_s.gsub(/(["\\])/, '\\\\\1')
end
end
end
def quote_and_escape(value)
case value
when "NULL"
value
else
"\"#{value.gsub(/"/,"\\\"")}\""
end
end
end
end
end
end
|