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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
require "rss/utils"
module RSS
class Converter
include Utils
def initialize(to_enc, from_enc=nil)
to_enc = to_enc.downcase.gsub(/-/, '_')
from_enc ||= 'utf-8'
from_enc = from_enc.downcase.gsub(/-/, '_')
if to_enc == from_enc
def_same_enc()
else
if respond_to?("def_to_#{to_enc}_from_#{from_enc}")
send("def_to_#{to_enc}_from_#{from_enc}")
else
def_else_enc(to_enc, from_enc)
end
end
end
def convert(value)
value
end
def def_convert()
instance_eval(<<-EOC, *get_file_and_line_from_caller(0))
def convert(value)
if value.kind_of?(String)
#{yield('value')}
else
value
end
end
EOC
end
def def_iconv_convert(to_enc, from_enc)
begin
require "iconv"
def_convert do |value|
<<-EOC
@iconv ||= Iconv.new("#{to_enc}", "#{from_enc}")
begin
@iconv.iconv(#{value})
rescue Iconv::Failure
raise ConversionError.new(#{value}, "#{to_enc}", "#{from_enc}")
end
EOC
end
rescue LoadError, ArgumentError, SystemCallError
raise UnknownConversionMethodError.new(to_enc, from_enc)
end
end
def def_else_enc(to_enc, from_enc)
raise UnknownConversionMethodError.new(to_enc, from_enc)
end
def def_same_enc()
def_convert do |value|
value
end
end
def def_uconv_convert_if_can(meth, to_enc, from_enc)
begin
require "uconv"
def_convert do |value|
<<-EOC
begin
Uconv.#{meth}(#{value})
rescue Uconv::Error
raise ConversionError.new(#{value}, "#{to_enc}", "#{from_enc}")
end
EOC
end
rescue LoadError
def_iconv_convert(to_enc, from_enc)
end
end
def def_to_euc_jp_from_utf_8
def_uconv_convert_if_can('u8toeuc', 'EUC-JP', 'UTF-8')
end
def def_to_utf_8_from_euc_jp
def_uconv_convert_if_can('euctou8', 'UTF-8', 'EUC-JP')
end
def def_to_shift_jis_from_utf_8
def_uconv_convert_if_can('u8tosjis', 'Shift_JIS', 'UTF-8')
end
def def_to_utf_8_from_shift_jis
def_uconv_convert_if_can('sjistou8', 'UTF-8', 'Shift_JIS')
end
def def_to_euc_jp_from_shift_jis
require "nkf"
def_convert do |value|
"NKF.nkf('-Se', #{value})"
end
end
def def_to_shift_jis_from_euc_jp
require "nkf"
def_convert do |value|
"NKF.nkf('-Es', #{value})"
end
end
def def_to_euc_jp_from_iso_2022_jp
require "nkf"
def_convert do |value|
"NKF.nkf('-Je', #{value})"
end
end
def def_to_iso_2022_jp_from_euc_jp
require "nkf"
def_convert do |value|
"NKF.nkf('-Ej', #{value})"
end
end
def def_to_utf_8_from_iso_8859_1
def_convert do |value|
"#{value}.unpack('C*').pack('U*')"
end
end
def def_to_iso_8859_1_from_utf_8
def_convert do |value|
<<-EOC
array_utf8 = #{value}.unpack('U*')
array_enc = []
array_utf8.each do |num|
if num <= 0xFF
array_enc << num
else
array_enc.concat "&\#\#{num};".unpack('C*')
end
end
array_enc.pack('C*')
EOC
end
end
end
end
|
