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
|
import algorithm
import unicode
import sets
import tables
import sugar
import strutils
type IDNATableStatus* = enum
IDNA_VALID, IDNA_IGNORED, IDNA_MAPPED, IDNA_DEVIATION, IDNA_DISALLOWED
const IdnaMappingTable = staticRead"res/IdnaMappingTable.txt"
func loadStuff(s: string): (seq[(uint16, cstring)], seq[(int, cstring)],
seq[(uint16, uint16)], seq[(int, int)],
set[uint16], HashSet[int],
set[uint16], HashSet[int],
seq[(uint16, cstring)]) =
template add_map(i: int, str: string) =
if cast[uint](i) <= high(uint16):
result[0].add((cast[uint16](i), cstring(str)))
else:
result[1].add((i, cstring(str)))
template add_disallow(i, j: int) =
if cast[uint](i) <= high(uint16):
result[2].add((cast[uint16](i), cast[uint16](j)))
else:
result[3].add((i, j))
template add_disallow(i: int) =
if cast[uint](i) <= high(uint16):
result[4].incl(cast[uint16](i))
else:
result[5].incl(i)
template add_ignore(i: int) =
if cast[uint](i) <= high(uint16):
result[6].incl(cast[uint16](i))
else:
result[7].incl(i)
template add_deviation(i: int, str: string) =
if cast[uint](i) <= high(uint16):
result[8].add((cast[uint16](i), cstring(str)))
else:
assert false
for line in s.split('\n'):
if line.len == 0 or line[0] == '#':
continue
var i = 0
var firstcol = ""
var status = ""
var thirdcol: seq[string]
var fourthcol = ""
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
firstcol &= line[i]
inc i
if line[i] != '#':
inc i
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
status &= line[i]
inc i
if line[i] != '#':
inc i
var nw = true
while i < line.len and line[i] notin {'#', ';'}:
if line[i] == ' ':
nw = true
else:
if nw:
thirdcol.add("")
nw = false
thirdcol[^1] &= line[i]
inc i
if line[i] != '#':
inc i
while i < line.len and line[i] notin {'#', ';'}:
if line[i] != ' ':
fourthcol &= line[i]
inc i
case status
of "mapped", "disallowed_STD3_mapped":
let codepoints = thirdcol
var str = ""
for code in codepoints:
str &= Rune(parseHexInt(code))
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = parseHexInt(fcs[0])
let rend = parseHexInt(fcs[1])
for i in rstart..rend:
add_map(i, str)
else:
add_map(parseHexInt(firstcol), str)
of "deviation":
let codepoints = thirdcol
var str = ""
for code in codepoints:
str &= Rune(parseHexInt(code))
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = parseHexInt(fcs[0])
let rend = parseHexInt(fcs[1])
for i in rstart..rend:
add_deviation(i, str)
else:
add_deviation(parseHexInt(firstcol), str)
of "valid":
if fourthcol == "NV8" or fourthcol == "XV8":
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = parseHexInt(fcs[0])
let rend = parseHexInt(fcs[1])
add_disallow(rstart, rend)
else:
add_disallow(parseHexInt(firstcol))
of "disallowed":
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = parseHexInt(fcs[0])
let rend = parseHexInt(fcs[1])
add_disallow(rstart, rend)
else:
add_disallow(parseHexInt(firstcol))
of "ignored":
if firstcol.contains(".."):
let fcs = firstcol.split("..")
let rstart = parseHexInt(fcs[0])
let rend = parseHexInt(fcs[1])
for i in rstart..rend:
add_ignore(i)
else:
add_ignore(parseHexInt(firstcol))
when defined(release):
const (MappedMap1,
MappedMap2,
DisallowedRanges1,
DisallowedRanges2,
Disallowed1,
Disallowed2,
Ignored1,
Ignored2,
Deviation) = loadStuff(IdnaMappingTable)
else:
let (MappedMap1,
MappedMap2,
DisallowedRanges1,
DisallowedRanges2,
Disallowed1,
Disallowed2,
Ignored1,
Ignored2,
Deviation) = loadStuff(IdnaMappingTable)
func searchInMap[U, T](a: openarray[(U, T)], u: U): int =
binarySearch(a, u, (x, y) => cmp(x[0], y))
func isInMap[U, T](a: openarray[(U, T)], u: U): bool =
a.searchInMap(u) != -1
func isInRange[U](a: openarray[(U, U)], u: U): bool =
binarySearch(a, u, (x, y) => (if x[0] < y: -1 elif x[1] > y: 1 else: 0)) != -1
func getIdnaTableStatus*(r: Rune): IDNATableStatus =
let i = int(r)
{.cast(noSideEffect).}:
if cast[uint](i) <= high(uint16):
let u = cast[uint16](i)
if u in Ignored1:
return IDNA_IGNORED
if u in Disallowed1:
return IDNA_DISALLOWED
for item in Deviation:
if item[0] == u:
return IDNA_DEVIATION
if DisallowedRanges1.isInRange(u):
return IDNA_DISALLOWED
if MappedMap1.isInMap(u):
return IDNA_MAPPED
else:
if i in Ignored2:
return IDNA_IGNORED
if i in Disallowed2:
return IDNA_DISALLOWED
if DisallowedRanges2.isInRange(i):
return IDNA_DISALLOWED
if MappedMap2.isInMap(i):
return IDNA_MAPPED
return IDNA_VALID
func getIdnaMapped*(r: Rune): string =
{.cast(noSideEffect).}:
let i = int(r)
if cast[uint](i) <= high(uint16):
let u = cast[uint16](i)
let n = MappedMap1.searchInMap(u)
if n != -1:
return $MappedMap1[n][1]
let n = MappedMap2.searchInMap(i)
return $MappedMap2[n][1]
func getDeviationMapped*(r: Rune): string =
{.cast(noSideEffect).}:
for item in Deviation:
if item[0] == cast[uint16](r):
return $item[1]
|