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
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/* $XFree86: xc/programs/xterm/wcwidth.c,v 1.3 2001/07/29 22:08:16 tsi Exp $ */
/*
* This is an implementation of wcwidth() and wcswidth() as defined in
* "The Single UNIX Specification, Version 2, The Open Group, 1997"
* <http://www.UNIX-systems.org/online.html>
*
* Markus Kuhn -- 2001-01-12 -- public domain
*/
#include "konsole_wcwidth.h"
#include <stdlib.h> // for getenv()
struct interval {
unsigned short first;
unsigned short last;
};
/* auxiliary function for binary search in interval table */
static int bisearch(Q_UINT16 ucs, const struct interval *table, int max) {
int min = 0;
int mid;
if (ucs < table[0].first || ucs > table[max].last)
return 0;
while (max >= min) {
mid = (min + max) / 2;
if (ucs > table[mid].last)
min = mid + 1;
else if (ucs < table[mid].first)
max = mid - 1;
else
return 1;
}
return 0;
}
/* The following functions define the column width of an ISO 10646
* character as follows:
*
* - The null character (U+0000) has a column width of 0.
*
* - Other C0/C1 control characters and DEL will lead to a return
* value of -1.
*
* - Non-spacing and enclosing combining characters (general
* category code Mn or Me in the Unicode database) have a
* column width of 0.
*
* - Other format characters (general category code Cf in the Unicode
* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
*
* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
* have a column width of 0.
*
* - Spacing characters in the East Asian Wide (W) or East Asian
* FullWidth (F) category as defined in Unicode Technical
* Report #11 have a column width of 2.
*
* - All remaining characters (including all printable
* ISO 8859-1 and WGL4 characters, Unicode control characters,
* etc.) have a column width of 1.
*
* This implementation assumes that Q_UINT16 characters are encoded
* in ISO 10646.
*/
int konsole_wcwidth_normal(Q_UINT16 ucs)
{
/* sorted list of non-overlapping intervals of non-spacing characters */
static const struct interval combining[] = {
{ 0x0300, 0x034E }, { 0x0360, 0x0362 }, { 0x0483, 0x0486 },
{ 0x0488, 0x0489 }, { 0x0591, 0x05A1 }, { 0x05A3, 0x05B9 },
{ 0x05BB, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
{ 0x05C4, 0x05C4 }, { 0x064B, 0x0655 }, { 0x0670, 0x0670 },
{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
{ 0x07A6, 0x07B0 }, { 0x0901, 0x0902 }, { 0x093C, 0x093C },
{ 0x0941, 0x0948 }, { 0x094D, 0x094D }, { 0x0951, 0x0954 },
{ 0x0962, 0x0963 }, { 0x0981, 0x0981 }, { 0x09BC, 0x09BC },
{ 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD }, { 0x09E2, 0x09E3 },
{ 0x0A02, 0x0A02 }, { 0x0A3C, 0x0A3C }, { 0x0A41, 0x0A42 },
{ 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D }, { 0x0A70, 0x0A71 },
{ 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC }, { 0x0AC1, 0x0AC5 },
{ 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD }, { 0x0B01, 0x0B01 },
{ 0x0B3C, 0x0B3C }, { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 },
{ 0x0B4D, 0x0B4D }, { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 },
{ 0x0BC0, 0x0BC0 }, { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 },
{ 0x0C46, 0x0C48 }, { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 },
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
{ 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D }, { 0x0DCA, 0x0DCA },
{ 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 }, { 0x0E31, 0x0E31 },
{ 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E }, { 0x0EB1, 0x0EB1 },
{ 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC }, { 0x0EC8, 0x0ECD },
{ 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 }, { 0x0F37, 0x0F37 },
{ 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E }, { 0x0F80, 0x0F84 },
{ 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 }, { 0x0F99, 0x0FBC },
{ 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, { 0x1032, 0x1032 },
{ 0x1036, 0x1037 }, { 0x1039, 0x1039 }, { 0x1058, 0x1059 },
{ 0x1160, 0x11FF }, { 0x17B7, 0x17BD }, { 0x17C6, 0x17C6 },
{ 0x17C9, 0x17D3 }, { 0x180B, 0x180E }, { 0x18A9, 0x18A9 },
{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x206A, 0x206F },
{ 0x20D0, 0x20E3 }, { 0x302A, 0x302F }, { 0x3099, 0x309A },
{ 0xFB1E, 0xFB1E }, { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF },
{ 0xFFF9, 0xFFFB }
};
/* test for 8-bit control characters */
if (ucs == 0)
return 0;
if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
return -1;
/* binary search in table of non-spacing characters */
if (bisearch(ucs, combining,
sizeof(combining) / sizeof(struct interval) - 1))
return 0;
/* if we arrive here, ucs is not a combining or C0/C1 control character */
return 1 +
(ucs >= 0x1100 &&
(ucs <= 0x115f || /* Hangul Jamo init. consonants */
(ucs >= 0x2e80 && ucs <= 0xa4cf && (ucs & ~0x0011) != 0x300a &&
ucs != 0x303f) || /* CJK ... Yi */
(ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
(ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
(ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
(ucs >= 0xff00 && ucs <= 0xff5f) || /* Fullwidth Forms */
(ucs >= 0xffe0 && ucs <= 0xffe6) /* do not compare UINT16 with 0x20000 ||
(ucs >= 0x20000 && ucs <= 0x2ffff) */));
}
/*
* The following function is the same as konsole_wcwidth(), except that
* spacing characters in the East Asian Ambiguous (A) category as
* defined in Unicode Technical Report #11 have a column width of 2.
* This experimental variant might be useful for users of CJK legacy
* encodings who want to migrate to UCS. It is not otherwise
* recommended for general use.
*/
int konsole_wcwidth_cjk(Q_UINT16 ucs)
{
/* sorted list of non-overlapping intervals of East Asian Ambiguous
* characters */
static const struct interval ambiguous[] = {
{ 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 },
{ 0x00AA, 0x00AA }, { 0x00AD, 0x00AD }, { 0x00B0, 0x00B4 },
{ 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 },
{ 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 },
{ 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED },
{ 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA },
{ 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 },
{ 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B },
{ 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 },
{ 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 },
{ 0x0148, 0x014A }, { 0x014D, 0x014D }, { 0x0152, 0x0153 },
{ 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE },
{ 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 },
{ 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA },
{ 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 },
{ 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB }, { 0x02CD, 0x02CD },
{ 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB }, { 0x02DD, 0x02DD },
{ 0x0391, 0x03A1 }, { 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 },
{ 0x03C3, 0x03C9 }, { 0x0401, 0x0401 }, { 0x0410, 0x044F },
{ 0x0451, 0x0451 }, { 0x2010, 0x2010 }, { 0x2013, 0x2016 },
{ 0x2018, 0x2019 }, { 0x201C, 0x201D }, { 0x2020, 0x2021 },
{ 0x2025, 0x2027 }, { 0x2030, 0x2030 }, { 0x2032, 0x2033 },
{ 0x2035, 0x2035 }, { 0x203B, 0x203B }, { 0x2074, 0x2074 },
{ 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC },
{ 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 },
{ 0x2113, 0x2113 }, { 0x2121, 0x2122 }, { 0x2126, 0x2126 },
{ 0x212B, 0x212B }, { 0x2154, 0x2155 }, { 0x215B, 0x215B },
{ 0x215E, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 },
{ 0x2190, 0x2199 }, { 0x21D2, 0x21D2 }, { 0x21D4, 0x21D4 },
{ 0x2200, 0x2200 }, { 0x2202, 0x2203 }, { 0x2207, 0x2208 },
{ 0x220B, 0x220B }, { 0x220F, 0x220F }, { 0x2211, 0x2211 },
{ 0x2215, 0x2215 }, { 0x221A, 0x221A }, { 0x221D, 0x2220 },
{ 0x2223, 0x2223 }, { 0x2225, 0x2225 }, { 0x2227, 0x222C },
{ 0x222E, 0x222E }, { 0x2234, 0x2237 }, { 0x223C, 0x223D },
{ 0x2248, 0x2248 }, { 0x224C, 0x224C }, { 0x2252, 0x2252 },
{ 0x2260, 0x2261 }, { 0x2264, 0x2267 }, { 0x226A, 0x226B },
{ 0x226E, 0x226F }, { 0x2282, 0x2283 }, { 0x2286, 0x2287 },
{ 0x2295, 0x2295 }, { 0x2299, 0x2299 }, { 0x22A5, 0x22A5 },
{ 0x22BF, 0x22BF }, { 0x2312, 0x2312 }, { 0x2460, 0x24BF },
{ 0x24D0, 0x24E9 }, { 0x2500, 0x254B }, { 0x2550, 0x2574 },
{ 0x2580, 0x258F }, { 0x2592, 0x2595 }, { 0x25A0, 0x25A1 },
{ 0x25A3, 0x25A9 }, { 0x25B2, 0x25B3 }, { 0x25B6, 0x25B7 },
{ 0x25BC, 0x25BD }, { 0x25C0, 0x25C1 }, { 0x25C6, 0x25C8 },
{ 0x25CB, 0x25CB }, { 0x25CE, 0x25D1 }, { 0x25E2, 0x25E5 },
{ 0x25EF, 0x25EF }, { 0x2605, 0x2606 }, { 0x2609, 0x2609 },
{ 0x260E, 0x260F }, { 0x261C, 0x261C }, { 0x261E, 0x261E },
{ 0x2640, 0x2640 }, { 0x2642, 0x2642 }, { 0x2660, 0x2661 },
{ 0x2663, 0x2665 }, { 0x2667, 0x266A }, { 0x266C, 0x266D },
{ 0x266F, 0x266F }, { 0x300A, 0x300B }, { 0x301A, 0x301B },
{ 0xE000, 0xF8FF }, { 0xFFFD, 0xFFFD }
};
/* binary search in table of non-spacing characters */
if (bisearch(ucs, ambiguous,
sizeof(ambiguous) / sizeof(struct interval) - 1))
return 2;
return konsole_wcwidth_normal(ucs);
}
// single byte char: +1, multi byte char: +2
int string_width( const TQString &txt )
{
int w = 0;
for ( uint i = 1; i < txt.length(); ++i ) {
w += konsole_wcwidth(txt[i].unicode());
}
return w;
}
int konsole_wcwidth(Q_UINT16 ucs) {
static int use_wcwidth_cjk = (getenv("KONSOLE_WCWIDTH_CJK")) ? 1: 0;
if (use_wcwidth_cjk) {
return konsole_wcwidth_cjk(ucs);
} else {
return konsole_wcwidth_normal(ucs);
}
}
|
