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
|
{-------------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
the specific language governing rights and limitations under the License.
Alternatively, the contents of this file may be used under the terms of the
GNU General Public License Version 2 or later (the "GPL"), in which case
the provisions of the GPL are applicable instead of those above.
If you wish to allow use of your version of this file only under the terms
of the GPL and not to allow others to use your version of this file
under the MPL, indicate your decision by deleting the provisions above and
replace them with the notice and other provisions required by the GPL.
If you do not delete the provisions above, a recipient may use your version
of this file under either the MPL or the GPL.
-------------------------------------------------------------------------------}
(*
visit the following URL for more information
http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
http://unicode.org/reports/tr11/
*)
unit SynEditTextDoubleWidthChars;
{$I synedit.inc}
interface
uses
Classes, SysUtils, LazSynEditText;
type
{ SynEditTextDoubleWidthChars }
SynEditStringDoubleWidthChars = class(TSynEditStringsLinked)
protected
procedure DoGetPhysicalCharWidths(Line: PChar; LineLen, Index: Integer; PWidths: PPhysicalCharWidth); override;
end;
implementation
{ SynEditTextDoubleWidthChars }
procedure SynEditStringDoubleWidthChars.DoGetPhysicalCharWidths(Line: PChar;
LineLen, Index: Integer; PWidths: PPhysicalCharWidth);
var
i: Integer;
begin
inherited DoGetPhysicalCharWidths(Line, LineLen, Index, PWidths);
if not IsUtf8 then
exit;
dec(Line);
dec(PWidths);
for i := 0 to LineLen - 1 do begin
inc(Line);
inc(PWidths);
if Line^ < #$e1 then continue;
if PWidths^ = 0 then continue;
case Line^ of
#$e1:
case Line[1] of
#$84:
if (Line[2] >= #$80) then PWidths^ := 2;
#$85:
if (Line[2] <= #$9f) then PWidths^ := 2;
end;
#$e2:
case Line[1] of
#$8c:
if (Line[2] = #$a9) or (Line[2] = #$aa) then PWidths^ := 2;
#$ba:
if (Line[2] >= #$80) then PWidths^ := 2;
#$bb..#$ff:
PWidths^ := 2;
end;
#$e3:
case Line[1] of
#$80:
if (Line[2] >= #$80) and (Line[2] <= #$be) then PWidths^ := 2;
#$81:
if (Line[2] >= #$81) then PWidths^ := 2;
#$82..#$8e:
PWidths^ := 2;
#$8f:
if (Line[2] <= #$bf) then PWidths^ := 2;
#$90:
if (Line[2] >= #$80) then PWidths^ := 2;
#$91..#$FF:
PWidths^ := 2;
end;
#$e4:
case Line[1] of
#$00..#$b5:
PWidths^ := 2;
#$b6:
if (Line[2] <= #$b5) then PWidths^ := 2;
#$b8:
if (Line[2] >= #$80) then PWidths^ := 2;
#$b9..#$ff:
PWidths^ := 2;
end;
#$e5..#$e8:
PWidths^ := 2;
#$e9:
if (Line[1] <= #$bf) or (Line[2] <= #$83) then PWidths^ := 2;
#$ea:
case Line[1] of
#$80, #$b0:
if (Line[2] >= #$80) then PWidths^ := 2;
#$81..#$92, #$b1..#$ff:
PWidths^ := 2;
#$93:
if (Line[2] <= #$86) then PWidths^ := 2;
end;
#$eb..#$ec:
PWidths^ := 2;
#$ed:
if (Line[1] <= #$9e) or (Line[2] <= #$a3) then PWidths^ := 2;
#$ef:
case Line[1] of
#$a4:
if (Line[2] >= #$80) then PWidths^ := 2;
#$a5..#$aa:
PWidths^ := 2;
#$ab:
if (Line[2] <= #$99) then PWidths^ := 2;
#$b8:
if (Line[2] in [#$90..#$99,#$b0..#$ff]) then PWidths^ := 2;
#$b9:
if (Line[2] <= #$ab) then PWidths^ := 2;
#$bc:
if (Line[2] >= #$81) then PWidths^ := 2;
#$bd:
if (Line[2] <= #$a0) then PWidths^ := 2;
#$bf:
if (Line[2] >= #$a0) and (Line[2] <= #$a6) then PWidths^ := 2;
end;
#$f0:
case Line[1] of
#$a0, #$b0:
case Line[2] of
#$80:
if (Line[3] >= #$80) then PWidths^ := 2;
#$81..#$ff:
PWidths^ := 2;
end;
#$a1..#$ae, #$b1..#$be:
PWidths^ := 2;
#$af, #$bf:
case Line[2] of
#$00..#$be:
PWidths^ := 2;
#$bf:
if (Line[3] <= #$bd) then PWidths^ := 2;
end;
end
end;
end
end;
(* Ranges that are FullWidth char
1100 e1 84 80 .. 115F e1 85 9f
2329 e2 8c a9 .. 232A e2 8c aa
2E80 e2 ba 80 .. 303E e3 80 be
3041 e3 81 81 .. 33FF e3 8f bf
3400 e3 90 80 .. 4DB5 e4 b6 b5
4E00 e4 b8 80 .. 9FC3 e9 bf 83
A000 ea 80 80 .. A4C6 ea 93 86
AC00 ea b0 80 .. D7A3 ed 9e a3
F900 ef a4 80 .. FAD9 ef ab 99
FE10 ef b8 90 .. FE19 ef b8 99
FE30 ef b8 b0 .. FE6B ef b9 ab
FF01 ef bc 81 .. FF60 ef bd a0
FFE0 ef bf a0 .. FFE6 ef bf a6
20000 f0 a0 80 80 .. 2FFFD f0 af bf bd
30000 f0 b0 80 80 .. 3FFFD f0 bf bf bd
*)
end.
|
