xaizek / vifm-pdcurses (License: mostly public domain) (since 2019-03-20)
PDCurses 3.4 with vifm-specific patches applied (a couple were upstreamed)
Clone URLs: https://code.reversed.top/user/xaizek/vifm-pdcurses ssh://rocketgit@code.reversed.top/user/xaizek/vifm-pdcurses
3.4-vifm 3.8-vifm 3.9-vifm master
Commit 9a184759c38d56bc66ee3416ee5d3f892b569ec7

Fix displaying of wide (CJK) characters for Win32
Author: xaizek
Author date (UTC): 2024-12-19 16:01
Committer name: xaizek
Committer date (UTC): 2024-12-19 16:04
Parent(s): df1c9967ec3f68f2a6e866dc41ec4d92c78747d1
Signing key: 99DC5E4DB05F6BE2
Tree: fe7941d07392b94672daf4e9544c0f6a8f844412
File Lines added Lines deleted
curspriv.h 5 0
libobjs.mif 1 1
pdcurses/addch.c 11 1
pdcurses/wcwidth.c 224 0
win32/pdcdisp.c 14 1
File curspriv.h changed (mode: 100644) (index 8b34f010..719b6114)
... ... extern bool pdc_color_started;
62 62 extern unsigned long pdc_key_modifiers; extern unsigned long pdc_key_modifiers;
63 63 extern MOUSE_STATUS pdc_mouse_status; extern MOUSE_STATUS pdc_mouse_status;
64 64
65 #ifdef PDC_WIDE
66 # include <wchar.h> /* wchar_t */
67 int compat_wcwidth(wchar_t ucs);
68 #endif
69
65 70 /*----------------------------------------------------------------------*/ /*----------------------------------------------------------------------*/
66 71
67 72 /* Platform implementation functions */ /* Platform implementation functions */
File libobjs.mif changed (mode: 100644) (index 67053235..f1f22e4a)
... ... initscr.$(O) inopts.$(O) insch.$(O) insstr.$(O) instr.$(O) kernel.$(O) \
17 17 keyname.$(O) mouse.$(O) move.$(O) outopts.$(O) overlay.$(O) pad.$(O) \ keyname.$(O) mouse.$(O) move.$(O) outopts.$(O) overlay.$(O) pad.$(O) \
18 18 panel.$(O) printw.$(O) refresh.$(O) scanw.$(O) scr_dump.$(O) scroll.$(O) \ panel.$(O) printw.$(O) refresh.$(O) scanw.$(O) scr_dump.$(O) scroll.$(O) \
19 19 slk.$(O) termattr.$(O) terminfo.$(O) touch.$(O) util.$(O) window.$(O) \ slk.$(O) termattr.$(O) terminfo.$(O) touch.$(O) util.$(O) window.$(O) \
20 debug.$(O)
20 debug.$(O) wcwidth.$(O)
21 21
22 22 PDCOBJS = pdcclip.$(O) pdcdisp.$(O) pdcgetsc.$(O) pdckbd.$(O) pdcscrn.$(O) \ PDCOBJS = pdcclip.$(O) pdcdisp.$(O) pdcgetsc.$(O) pdckbd.$(O) pdcscrn.$(O) \
23 23 pdcsetsc.$(O) pdcutil.$(O) pdcsetsc.$(O) pdcutil.$(O)
File pdcurses/addch.c changed (mode: 100644) (index 586d1a71..64817609)
... ... int waddch(WINDOW *win, const chtype ch)
240 240 win->_y[y][x] = text; win->_y[y][x] = text;
241 241 } }
242 242
243 if (++x >= win->_maxx)
243 #ifdef PDC_WIDE
244 /* Leave the rest "width - 1" character positions untouched, just jump
245 * over them. Platform-specific code is expected to do something
246 * similar. */
247 x += compat_wcwidth(text);
248 /* XXX: this might result in truncated character, might want to perform
249 * the check before setting the character. */
250 #else
251 ++x;
252 #endif
253 if (x >= win->_maxx)
244 254 { {
245 255 /* wrap around test */ /* wrap around test */
246 256
File pdcurses/wcwidth.c added (mode: 100644) (index 00000000..9d117bf2)
1 /*
2 * Copyright (C) Markus Kuhn -- 2007-05-26 (Unicode 5.0)
3 * Copyright (C) xaizek -- 2014 (Adapt for vifm)
4 * Copyright (C) xaizek -- 2016 (Adapt for pdcurses)
5 *
6 * This is an implementation of wcwidth() and wcswidth() (defined in
7 * IEEE Std 1002.1-2001) for Unicode.
8 *
9 * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
10 * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
11 *
12 * In fixed-width output devices, Latin characters all occupy a single
13 * "cell" position of equal width, whereas ideographic CJK characters
14 * occupy two such cells. Interoperability between terminal-line
15 * applications and (teletype-style) character terminals using the
16 * UTF-8 encoding requires agreement on which character should advance
17 * the cursor by how many cell positions. No established formal
18 * standards exist at present on which Unicode character shall occupy
19 * how many cell positions on character terminals. These routines are
20 * a first attempt of defining such behavior based on simple rules
21 * applied to data provided by the Unicode Consortium.
22 *
23 * For some graphical characters, the Unicode standard explicitly
24 * defines a character-cell width via the definition of the East Asian
25 * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
26 * In all these cases, there is no ambiguity about which width a
27 * terminal shall use. For characters in the East Asian Ambiguous (A)
28 * class, the width choice depends purely on a preference of backward
29 * compatibility with either historic CJK or Western practice.
30 * Choosing single-width for these characters is easy to justify as
31 * the appropriate long-term solution, as the CJK practice of
32 * displaying these characters as double-width comes from historic
33 * implementation simplicity (8-bit encoded characters were displayed
34 * single-width and 16-bit ones double-width, even for Greek,
35 * Cyrillic, etc.) and not any typographic considerations.
36 *
37 * Much less clear is the choice of width for the Not East Asian
38 * (Neutral) class. Existing practice does not dictate a width for any
39 * of these characters. It would nevertheless make sense
40 * typographically to allocate two character cells to characters such
41 * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
42 * represented adequately with a single-width glyph. The following
43 * routines at present merely assign a single-cell width to all
44 * neutral characters, in the interest of simplicity. This is not
45 * entirely satisfactory and should be reconsidered before
46 * establishing a formal standard in this area. At the moment, the
47 * decision which Not East Asian (Neutral) characters should be
48 * represented by double-width glyphs cannot yet be answered by
49 * applying a simple rule from the Unicode database content. Setting
50 * up a proper standard for the behavior of UTF-8 character terminals
51 * will require a careful analysis not only of each Unicode character,
52 * but also of each presentation form, something the author of these
53 * routines has avoided to do so far.
54 *
55 * http://www.unicode.org/unicode/reports/tr11/
56 *
57 * Permission to use, copy, modify, and distribute this software
58 * for any purpose and without fee is hereby granted. The author
59 * disclaims all warranties with regard to this software.
60 *
61 * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
62 */
63
64 #ifdef PDC_WIDE
65
66 #include <curspriv.h>
67
68 #include <wchar.h> /* wchar_t */
69
70 typedef struct
71 {
72 int first;
73 int last;
74 }
75 interval;
76
77 static int bisearch(wchar_t ucs, const interval *table, int max);
78
79 /* The following two functions define the column width of an ISO 10646
80 * character as follows:
81 * - The null character (U+0000) has a column width of 0.
82 * - Other C0/C1 control characters and DEL will lead to a return
83 * value of -1.
84 * - Non-spacing and enclosing combining characters (general
85 * category code Mn or Me in the Unicode database) have a
86 * column width of 0.
87 * - SOFT HYPHEN (U+00AD) has a column width of 1.
88 * - Other format characters (general category code Cf in the Unicode
89 * database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
90 * - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
91 * have a column width of 0.
92 * - Spacing characters in the East Asian Wide (W) or East Asian
93 * Full-width (F) category as defined in Unicode Technical
94 * Report #11 have a column width of 2.
95 * - All remaining characters (including all printable
96 * ISO 8859-1 and WGL4 characters, Unicode control characters,
97 * etc.) have a column width of 1.
98 * This implementation assumes that wchar_t characters are encoded
99 * in ISO 10646.
100 */
101 int
102 compat_wcwidth(wchar_t ucs)
103 {
104 /* Sorted list of non-overlapping intervals of non-spacing characters
105 * generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c". */
106 static const interval combining[] =
107 {
108 { 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
109 { 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
110 { 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
111 { 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
112 { 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
113 { 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
114 { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
115 { 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
116 { 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
117 { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
118 { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
119 { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
120 { 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
121 { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
122 { 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
123 { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
124 { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
125 { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
126 { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
127 { 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
128 { 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
129 { 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
130 { 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
131 { 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
132 { 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
133 { 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
134 { 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
135 { 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
136 { 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
137 { 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
138 { 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
139 { 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
140 { 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
141 { 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
142 { 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
143 { 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
144 { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
145 { 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
146 { 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
147 { 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
148 { 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
149 { 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
150 { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
151 { 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
152 { 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
153 { 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
154 { 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
155 { 0xE0100, 0xE01EF }
156 };
157
158 /* Test for 8-bit control characters. */
159 if(ucs == 0)
160 {
161 return 0;
162 }
163 if(ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
164 {
165 return -1;
166 }
167
168 /* Binary search in table of non-spacing characters. */
169 if(bisearch(ucs, combining, sizeof(combining)/sizeof(combining[0]) - 1))
170 {
171 return 0;
172 }
173
174 /* If we arrive here, ucs is not a combining or C0/C1 control character. */
175
176 return 1 +
177 (ucs >= 0x1100 &&
178 (ucs <= 0x115f || /* Hangul Jamo init. consonants */
179 ucs == 0x2329 || ucs == 0x232a ||
180 (ucs >= 0x2e80 && ucs <= 0xa4cf &&
181 ucs != 0x303f) || /* CJK ... Yi */
182 (ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
183 (ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
184 (ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */
185 (ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
186 (ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */
187 (ucs >= 0xffe0 && ucs <= 0xffe6) ||
188 (ucs >= 0x20000 && ucs <= 0x2fffd) ||
189 (ucs >= 0x30000 && ucs <= 0x3fffd)));
190 }
191
192 /* Auxiliary function for binary search in interval table. */
193 static int
194 bisearch(wchar_t ucs, const interval *table, int max)
195 {
196 int min;
197
198 if(ucs < table[0].first || ucs > table[max].last)
199 {
200 return 0;
201 }
202
203 min = 0;
204 while(max >= min)
205 {
206 const int mid = (min + max)/2;
207 if(ucs > table[mid].last)
208 {
209 min = mid + 1;
210 }
211 else if(ucs < table[mid].first)
212 {
213 max = mid - 1;
214 }
215 else
216 {
217 return 1;
218 }
219 }
220
221 return 0;
222 }
223
224 #endif
File win32/pdcdisp.c changed (mode: 100644) (index c2ad8142..d67dc58d)
... ... void PDC_transform_line(int lineno, int x, int len, const chtype *srcp)
104 104 for (j = 0; j < len; j++) for (j = 0; j < len; j++)
105 105 { {
106 106 chtype ch = srcp[j]; chtype ch = srcp[j];
107 unsigned char attr = pdc_atrtab[ch >> PDC_ATTR_SHIFT];
107 108
108 ci[j].Attributes = pdc_atrtab[ch >> PDC_ATTR_SHIFT];
109 ci[j].Attributes = attr;
109 110 #ifdef CHTYPE_LONG #ifdef CHTYPE_LONG
110 111 if (ch & A_ALTCHARSET && !(ch & 0xff80)) if (ch & A_ALTCHARSET && !(ch & 0xff80))
111 112 ch = acs_map[ch & 0x7f]; ch = acs_map[ch & 0x7f];
112 113 #endif #endif
113 114 ci[j].Char.UnicodeChar = ch & A_CHARTEXT; ci[j].Char.UnicodeChar = ch & A_CHARTEXT;
115
116 #ifdef PDC_WIDE
117 {
118 int gap_width = compat_wcwidth(srcp[j] & A_CHARTEXT) - 1;
119 while (gap_width-- > 0)
120 {
121 ++j;
122 ci[j].Attributes = attr;
123 ci[j].Char.UnicodeChar = '\0';
124 }
125 }
126 #endif
114 127 } }
115 128
116 129 WriteConsoleOutput(pdc_con_out, ci, bufSize, bufPos, &sr); WriteConsoleOutput(pdc_con_out, ci, bufSize, bufPos, &sr);
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