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
|
module ActiveRecord
module ConnectionAdapters
module PostgreSQL
module Cast # :nodoc:
def hstore_to_string(object, array_member = false) # :nodoc:
if Hash === object
string = object.map { |k, v| "#{escape_hstore(k)}=>#{escape_hstore(v)}" }.join(', ')
string = escape_hstore(string) if array_member
string
else
object
end
end
def string_to_hstore(string) # :nodoc:
if string.nil?
nil
elsif String === string
Hash[string.scan(HstorePair).map { |k, v|
v = v.upcase == 'NULL' ? nil : v.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\\(.)/, '\1')
k = k.gsub(/\A"(.*)"\Z/m,'\1').gsub(/\\(.)/, '\1')
[k, v]
}]
else
string
end
end
def range_to_string(object) # :nodoc:
from = object.begin.respond_to?(:infinite?) && object.begin.infinite? ? '' : object.begin
to = object.end.respond_to?(:infinite?) && object.end.infinite? ? '' : object.end
"[#{from},#{to}#{object.exclude_end? ? ')' : ']'}"
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
end
end
end
end
|
