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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
# jcode.rb - ruby code to handle japanese (EUC/SJIS) string
if $VERBOSE && $KCODE == "NONE"
warn "Warning: $KCODE is NONE."
end
$vsave, $VERBOSE = $VERBOSE, false
class String
warn "feel free for some warnings:\n" if $VERBOSE
def _regex_quote(str)
str.gsub(/(\\[\[\]\-\\])|\\(.)|([\[\]\\])/) do
$1 || $2 || '\\' + $3
end
end
private :_regex_quote
PATTERN_SJIS = '[\x81-\x9f\xe0-\xef][\x40-\x7e\x80-\xfc]'
PATTERN_EUC = '[\xa1-\xfe][\xa1-\xfe]'
PATTERN_UTF8 = '[\xc0-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf][\x80-\xbf]'
RE_SJIS = Regexp.new(PATTERN_SJIS, 0, 'n')
RE_EUC = Regexp.new(PATTERN_EUC, 0, 'n')
RE_UTF8 = Regexp.new(PATTERN_UTF8, 0, 'n')
SUCC = {}
SUCC['s'] = Hash.new(1)
for i in 0 .. 0x3f
SUCC['s'][i.chr] = 0x40 - i
end
SUCC['s']["\x7e"] = 0x80 - 0x7e
SUCC['s']["\xfd"] = 0x100 - 0xfd
SUCC['s']["\xfe"] = 0x100 - 0xfe
SUCC['s']["\xff"] = 0x100 - 0xff
SUCC['e'] = Hash.new(1)
for i in 0 .. 0xa0
SUCC['e'][i.chr] = 0xa1 - i
end
SUCC['e']["\xfe"] = 2
SUCC['u'] = Hash.new(1)
for i in 0 .. 0x7f
SUCC['u'][i.chr] = 0x80 - i
end
SUCC['u']["\xbf"] = 0x100 - 0xbf
def mbchar?
case $KCODE[0]
when ?s, ?S
self =~ RE_SJIS
when ?e, ?E
self =~ RE_EUC
when ?u, ?U
self =~ RE_UTF8
else
nil
end
end
def end_regexp
case $KCODE[0]
when ?s, ?S
/#{PATTERN_SJIS}$/on
when ?e, ?E
/#{PATTERN_EUC}$/on
when ?u, ?U
/#{PATTERN_UTF8}$/on
else
/.$/on
end
end
alias original_succ! succ!
private :original_succ!
alias original_succ succ
private :original_succ
def succ!
reg = end_regexp
if self =~ reg
succ_table = SUCC[$KCODE[0,1].downcase]
begin
self[-1] += succ_table[self[-1]]
self[-2] += 1 if self[-1] == 0
end while self !~ reg
self
else
original_succ!
end
end
def succ
(str = self.dup).succ! or str
end
private
def _expand_ch str
a = []
str.scan(/(?:\\(.)|([^\\]))-(?:\\(.)|([^\\]))|(?:\\(.)|(.))/m) do
from = $1 || $2
to = $3 || $4
one = $5 || $6
if one
a.push one
elsif from.length != to.length
next
elsif from.length == 1
from[0].upto(to[0]) { |c| a.push c.chr }
else
from.upto(to) { |c| a.push c }
end
end
a
end
def expand_ch_hash from, to
h = {}
afrom = _expand_ch(from)
ato = _expand_ch(to)
afrom.each_with_index do |x,i| h[x] = ato[i] || ato[-1] end
h
end
HashCache = {}
TrPatternCache = {}
DeletePatternCache = {}
SqueezePatternCache = {}
public
def tr!(from, to)
return nil if from == ""
return self.delete!(from) if to == ""
pattern = TrPatternCache[from] ||= /[#{_regex_quote(from)}]/
if from[0] == ?^
last = /.$/.match(to)[0]
self.gsub!(pattern, last)
else
h = HashCache[from + "1-0" + to] ||= expand_ch_hash(from, to)
self.gsub!(pattern) do |c| h[c] end
end
end
def tr(from, to)
(str = self.dup).tr!(from, to) or str
end
def delete!(del)
return nil if del == ""
self.gsub!(DeletePatternCache[del] ||= /[#{_regex_quote(del)}]+/, '')
end
def delete(del)
(str = self.dup).delete!(del) or str
end
def squeeze!(del=nil)
return nil if del == ""
pattern =
if del
SqueezePatternCache[del] ||= /([#{_regex_quote(del)}])\1+/
else
/(.|\n)\1+/
end
self.gsub!(pattern, '\1')
end
def squeeze(del=nil)
(str = self.dup).squeeze!(del) or str
end
def tr_s!(from, to)
return self.delete!(from) if to.length == 0
pattern = SqueezePatternCache[from] ||= /([#{_regex_quote(from)}])\1+/
if from[0] == ?^
last = /.$/.match(to)[0]
self.gsub!(pattern, last)
else
h = HashCache[from + "1-0" + to] ||= expand_ch_hash(from, to)
self.gsub!(pattern) do h[$1] end
end
end
def tr_s(from, to)
(str = self.dup).tr_s!(from,to) or str
end
def chop!
self.gsub!(/(?:.|\r?\n)\z/, '')
end
def chop
(str = self.dup).chop! or str
end
def jlength
self.gsub(/[^\Wa-zA-Z_\d]/, ' ').length
end
alias jsize jlength
def jcount(str)
self.delete("^#{str}").jlength
end
def each_char
if block_given?
scan(/./m) do |x|
yield x
end
else
scan(/./m)
end
end
end
$VERBOSE = $vsave
|
