From ae5d181b854d3ccb373b6bc01b4869e44ff4d87a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:37:15 +0200 Subject: Adding upstream version 2.9.0dev.12. Signed-off-by: Daniel Baumann --- src/wcwidth.c | 709 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 709 insertions(+) create mode 100644 src/wcwidth.c (limited to 'src/wcwidth.c') diff --git a/src/wcwidth.c b/src/wcwidth.c new file mode 100644 index 0000000..ea46336 --- /dev/null +++ b/src/wcwidth.c @@ -0,0 +1,709 @@ +/* $XTermId: wcwidth.c,v 1.42 2018/12/04 10:13:14 tom Exp $ */ + +/* $XFree86: xc/programs/xterm/wcwidth.c,v 1.9 2006/06/19 00:36:52 dickey Exp $ */ + +/* + * Copyright 2002-2017,2018 by Thomas E. Dickey + * + * All Rights Reserved + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name(s) of the above copyright + * holders shall not be used in advertising or otherwise to promote the + * sale, use or other dealings in this Software without prior written + * authorization. + *----------------------------------------------------------------------------- + * This is an updated version of Markus Kuhn's implementation of wcwidth. + * + * Originally added to xterm in 2000 (patch #141), there were a couple of + * updates from Kuhn until 2005 (patch #202), renaming entrypoints and applying + * data from Unicode.org (e.g., 3.2, 4.0, 4.1.0). The Unicode data is + * transformed into tables in this file by a script "uniset" written by Kuhn. + * + * While Kuhn implemented the original CJK variant, it was unused by xterm + * until Jungshik Shin used it in 2002 to implement the -cjk_width command-line + * option. + * + * Kuhn added a check for the vertical forms block (double-width) in 2007; + * other updates were derived from the Unicode.org data (release 5.0). + * + * Since then, additional updates have been made: + * + data-type fixes + * + new Unicode releases (6.2.0, 9.0.0), + * + additional special symbol blocks have been added to the special cases. + * + soft-hyphen behavior has been made configurable. + * + added table shows when a character is not part of Unicode. + * + * Kuhn's original header follows giving the design information: + *----------------------------------------------------------------------------- + * This is an implementation of wcwidth() and wcswidth() (defined in + * IEEE Std 1002.1-2001) for Unicode. + * + * http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html + * http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html + * + * In fixed-width output devices, Latin characters all occupy a single + * "cell" position of equal width, whereas ideographic CJK characters + * occupy two such cells. Interoperability between terminal-line + * applications and (teletype-style) character terminals using the + * UTF-8 encoding requires agreement on which character should advance + * the cursor by how many cell positions. No established formal + * standards exist at present on which Unicode character shall occupy + * how many cell positions on character terminals. These routines are + * a first attempt of defining such behavior based on simple rules + * applied to data provided by the Unicode Consortium. + * + * For some graphical characters, the Unicode standard explicitly + * defines a character-cell width via the definition of the East Asian + * FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes. + * In all these cases, there is no ambiguity about which width a + * terminal shall use. For characters in the East Asian Ambiguous (A) + * class, the width choice depends purely on a preference of backward + * compatibility with either historic CJK or Western practice. + * Choosing single-width for these characters is easy to justify as + * the appropriate long-term solution, as the CJK practice of + * displaying these characters as double-width comes from historic + * implementation simplicity (8-bit encoded characters were displayed + * single-width and 16-bit ones double-width, even for Greek, + * Cyrillic, etc.) and not any typographic considerations. + * + * Much less clear is the choice of width for the Not East Asian + * (Neutral) class. Existing practice does not dictate a width for any + * of these characters. It would nevertheless make sense + * typographically to allocate two character cells to characters such + * as for instance EM SPACE or VOLUME INTEGRAL, which cannot be + * represented adequately with a single-width glyph. The following + * routines at present merely assign a single-cell width to all + * neutral characters, in the interest of simplicity. This is not + * entirely satisfactory and should be reconsidered before + * establishing a formal standard in this area. At the moment, the + * decision which Not East Asian (Neutral) characters should be + * represented by double-width glyphs cannot yet be answered by + * applying a simple rule from the Unicode database content. Setting + * up a proper standard for the behavior of UTF-8 character terminals + * will require a careful analysis not only of each Unicode character, + * but also of each presentation form, something the author of these + * routines has avoided to do so far. + * + * http://www.unicode.org/unicode/reports/tr11/ + * + * Markus Kuhn -- 2007-05-25 (Unicode 5.0) + * + * Permission to use, copy, modify, and distribute this software + * for any purpose and without fee is hereby granted. The author + * disclaims all warranties with regard to this software. + * + * Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c + */ + +#include + +struct interval { + unsigned long first; + unsigned long last; +}; + +static int use_latin1 = 1; + +/* auxiliary function for binary search in interval table */ +static int bisearch(unsigned long ucs, const struct interval *table, int max) { + + if (ucs >= table[0].first && ucs <= table[max].last) { + int min = 0; + + while (max >= min) { + int mid; + + 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; +} + +/* + * Provide a way to change the behavior of soft-hyphen. + */ +void +mk_wcwidth_init(int mode) +{ + use_latin1 = (mode == 0); +} + +/* The following two 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. + * + * - A few spacing combining marks have a column width of 0. + * + * - SOFT HYPHEN (U+00AD) has a column width of 1 in Latin-1, 0 in Unicode. + * An initialization function is used to switch between the two. + * + * - 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 + * Full-width (F) category as defined in Unicode Technical + * Report #11 have a column width of 2. In that report, some codes + * were unassigned. Characters in these blocks use a column width of 1: + * 4DC0..4DFF; Yijing Hexagram Symbols + * A960..A97F; Hangul Jamo Extended-A + * + * - All remaining characters (including all printable + * ISO 8859-1 and WGL4 characters, Unicode control characters, + * etc.) have a column width of 1. + * + * - Codes which do not correspond to a Unicode character have a column + * width of -1. + * + * This implementation assumes that wchar_t characters are encoded + * in ISO 10646. + */ + +int mk_wcwidth(wchar_t ucs) +{ + unsigned long cmp = (unsigned long) ucs; + + /* sorted list of non-overlapping intervals of non-spacing characters */ + /* generated by + * uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c + */ + static const struct interval combining[] = { + { 0x0300, 0x036F }, { 0x0483, 0x0489 }, { 0x0591, 0x05BD }, + { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 }, { 0x05C4, 0x05C5 }, + { 0x05C7, 0x05C7 }, { 0x0600, 0x0605 }, { 0x0610, 0x061A }, + { 0x061C, 0x061C }, { 0x064B, 0x065F }, { 0x0670, 0x0670 }, + { 0x06D6, 0x06DD }, { 0x06DF, 0x06E4 }, { 0x06E7, 0x06E8 }, + { 0x06EA, 0x06ED }, { 0x070F, 0x070F }, { 0x0711, 0x0711 }, + { 0x0730, 0x074A }, { 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, + { 0x0816, 0x0819 }, { 0x081B, 0x0823 }, { 0x0825, 0x0827 }, + { 0x0829, 0x082D }, { 0x0859, 0x085B }, { 0x08D4, 0x0902 }, + { 0x093A, 0x093A }, { 0x093C, 0x093C }, { 0x0941, 0x0948 }, + { 0x094D, 0x094D }, { 0x0951, 0x0957 }, { 0x0962, 0x0963 }, + { 0x0981, 0x0981 }, { 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, + { 0x09CD, 0x09CD }, { 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, + { 0x0A3C, 0x0A3C }, { 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, + { 0x0A4B, 0x0A4D }, { 0x0A51, 0x0A51 }, { 0x0A70, 0x0A71 }, + { 0x0A75, 0x0A75 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC }, + { 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD }, + { 0x0AE2, 0x0AE3 }, { 0x0AFA, 0x0AFF }, { 0x0B01, 0x0B01 }, + { 0x0B3C, 0x0B3C }, { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B44 }, + { 0x0B4D, 0x0B4D }, { 0x0B56, 0x0B56 }, { 0x0B62, 0x0B63 }, + { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 }, { 0x0BCD, 0x0BCD }, + { 0x0C00, 0x0C00 }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 }, + { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0C62, 0x0C63 }, + { 0x0C81, 0x0C81 }, { 0x0CBC, 0x0CBC }, { 0x0CBF, 0x0CBF }, + { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD }, { 0x0CE2, 0x0CE3 }, + { 0x0D00, 0x0D01 }, { 0x0D3B, 0x0D3C }, { 0x0D41, 0x0D44 }, + { 0x0D4D, 0x0D4D }, { 0x0D62, 0x0D63 }, { 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 }, { 0x0F8D, 0x0F97 }, { 0x0F99, 0x0FBC }, + { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, { 0x1032, 0x1037 }, + { 0x1039, 0x103A }, { 0x103D, 0x103E }, { 0x1058, 0x1059 }, + { 0x105E, 0x1060 }, { 0x1071, 0x1074 }, { 0x1082, 0x1082 }, + { 0x1085, 0x1086 }, { 0x108D, 0x108D }, { 0x109D, 0x109D }, + { 0x1160, 0x11FF }, { 0x135D, 0x135F }, { 0x1712, 0x1714 }, + { 0x1732, 0x1734 }, { 0x1752, 0x1753 }, { 0x1772, 0x1773 }, + { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD }, { 0x17C6, 0x17C6 }, + { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD }, { 0x180B, 0x180E }, + { 0x1885, 0x1886 }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 }, + { 0x1927, 0x192B }, { 0x1932, 0x1932 }, { 0x1939, 0x193B }, + { 0x1A17, 0x1A18 }, { 0x1A1B, 0x1A1B }, { 0x1A56, 0x1A56 }, + { 0x1A58, 0x1A5E }, { 0x1A60, 0x1A60 }, { 0x1A62, 0x1A62 }, + { 0x1A65, 0x1A6C }, { 0x1A73, 0x1A7C }, { 0x1A7F, 0x1A7F }, + { 0x1AB0, 0x1ABE }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 }, + { 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 }, + { 0x1B6B, 0x1B73 }, { 0x1B80, 0x1B81 }, { 0x1BA2, 0x1BA5 }, + { 0x1BA8, 0x1BA9 }, { 0x1BAB, 0x1BAD }, { 0x1BE6, 0x1BE6 }, + { 0x1BE8, 0x1BE9 }, { 0x1BED, 0x1BED }, { 0x1BEF, 0x1BF1 }, + { 0x1C2C, 0x1C33 }, { 0x1C36, 0x1C37 }, { 0x1CD0, 0x1CD2 }, + { 0x1CD4, 0x1CE0 }, { 0x1CE2, 0x1CE8 }, { 0x1CED, 0x1CED }, + { 0x1CF4, 0x1CF4 }, { 0x1CF8, 0x1CF9 }, { 0x1DC0, 0x1DF9 }, + { 0x1DFB, 0x1DFF }, { 0x200B, 0x200F }, { 0x202A, 0x202E }, + { 0x2060, 0x2064 }, { 0x2066, 0x206F }, { 0x20D0, 0x20F0 }, + { 0x2CEF, 0x2CF1 }, { 0x2D7F, 0x2D7F }, { 0x2DE0, 0x2DFF }, + { 0x302A, 0x302F }, { 0x3099, 0x309A }, { 0xA66F, 0xA672 }, + { 0xA674, 0xA67D }, { 0xA69E, 0xA69F }, { 0xA6F0, 0xA6F1 }, + { 0xA802, 0xA802 }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B }, + { 0xA825, 0xA826 }, { 0xA8C4, 0xA8C5 }, { 0xA8E0, 0xA8F1 }, + { 0xA926, 0xA92D }, { 0xA947, 0xA951 }, { 0xA980, 0xA982 }, + { 0xA9B3, 0xA9B3 }, { 0xA9B6, 0xA9B9 }, { 0xA9BC, 0xA9BC }, + { 0xA9E5, 0xA9E5 }, { 0xAA29, 0xAA2E }, { 0xAA31, 0xAA32 }, + { 0xAA35, 0xAA36 }, { 0xAA43, 0xAA43 }, { 0xAA4C, 0xAA4C }, + { 0xAA7C, 0xAA7C }, { 0xAAB0, 0xAAB0 }, { 0xAAB2, 0xAAB4 }, + { 0xAAB7, 0xAAB8 }, { 0xAABE, 0xAABF }, { 0xAAC1, 0xAAC1 }, + { 0xAAEC, 0xAAED }, { 0xAAF6, 0xAAF6 }, { 0xABE5, 0xABE5 }, + { 0xABE8, 0xABE8 }, { 0xABED, 0xABED }, { 0xFB1E, 0xFB1E }, + { 0xFE00, 0xFE0F }, { 0xFE20, 0xFE2F }, { 0xFEFF, 0xFEFF }, + { 0xFFF9, 0xFFFB }, { 0x101FD, 0x101FD }, { 0x102E0, 0x102E0 }, + { 0x10376, 0x1037A }, { 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, + { 0x10A0C, 0x10A0F }, { 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, + { 0x10AE5, 0x10AE6 }, { 0x11001, 0x11001 }, { 0x11038, 0x11046 }, + { 0x1107F, 0x11081 }, { 0x110B3, 0x110B6 }, { 0x110B9, 0x110BA }, + { 0x110BD, 0x110BD }, { 0x11100, 0x11102 }, { 0x11127, 0x1112B }, + { 0x1112D, 0x11134 }, { 0x11173, 0x11173 }, { 0x11180, 0x11181 }, + { 0x111B6, 0x111BE }, { 0x111CA, 0x111CC }, { 0x1122F, 0x11231 }, + { 0x11234, 0x11234 }, { 0x11236, 0x11237 }, { 0x1123E, 0x1123E }, + { 0x112DF, 0x112DF }, { 0x112E3, 0x112EA }, { 0x11300, 0x11301 }, + { 0x1133C, 0x1133C }, { 0x11340, 0x11340 }, { 0x11366, 0x1136C }, + { 0x11370, 0x11374 }, { 0x11438, 0x1143F }, { 0x11442, 0x11444 }, + { 0x11446, 0x11446 }, { 0x114B3, 0x114B8 }, { 0x114BA, 0x114BA }, + { 0x114BF, 0x114C0 }, { 0x114C2, 0x114C3 }, { 0x115B2, 0x115B5 }, + { 0x115BC, 0x115BD }, { 0x115BF, 0x115C0 }, { 0x115DC, 0x115DD }, + { 0x11633, 0x1163A }, { 0x1163D, 0x1163D }, { 0x1163F, 0x11640 }, + { 0x116AB, 0x116AB }, { 0x116AD, 0x116AD }, { 0x116B0, 0x116B5 }, + { 0x116B7, 0x116B7 }, { 0x1171D, 0x1171F }, { 0x11722, 0x11725 }, + { 0x11727, 0x1172B }, { 0x11A01, 0x11A06 }, { 0x11A09, 0x11A0A }, + { 0x11A33, 0x11A38 }, { 0x11A3B, 0x11A3E }, { 0x11A47, 0x11A47 }, + { 0x11A51, 0x11A56 }, { 0x11A59, 0x11A5B }, { 0x11A8A, 0x11A96 }, + { 0x11A98, 0x11A99 }, { 0x11C30, 0x11C36 }, { 0x11C38, 0x11C3D }, + { 0x11C3F, 0x11C3F }, { 0x11C92, 0x11CA7 }, { 0x11CAA, 0x11CB0 }, + { 0x11CB2, 0x11CB3 }, { 0x11CB5, 0x11CB6 }, { 0x11D31, 0x11D36 }, + { 0x11D3A, 0x11D3A }, { 0x11D3C, 0x11D3D }, { 0x11D3F, 0x11D45 }, + { 0x11D47, 0x11D47 }, { 0x16AF0, 0x16AF4 }, { 0x16B30, 0x16B36 }, + { 0x16F8F, 0x16F92 }, { 0x1BC9D, 0x1BC9E }, { 0x1BCA0, 0x1BCA3 }, + { 0x1D167, 0x1D169 }, { 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, + { 0x1D1AA, 0x1D1AD }, { 0x1D242, 0x1D244 }, { 0x1DA00, 0x1DA36 }, + { 0x1DA3B, 0x1DA6C }, { 0x1DA75, 0x1DA75 }, { 0x1DA84, 0x1DA84 }, + { 0x1DA9B, 0x1DA9F }, { 0x1DAA1, 0x1DAAF }, { 0x1E000, 0x1E006 }, + { 0x1E008, 0x1E018 }, { 0x1E01B, 0x1E021 }, { 0x1E023, 0x1E024 }, + { 0x1E026, 0x1E02A }, { 0x1E8D0, 0x1E8D6 }, { 0x1E944, 0x1E94A }, + { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F }, { 0xE0100, 0xE01EF } + }; + + /* sorted list of non-overlapping intervals of non-characters */ + /* generated by + * uniset +0000..DFFF -4e00..9fd5 +F900..10FFFD unknown +2028..2029 c + */ + static const struct interval unknowns[] = { + { 0x0378, 0x0379 }, { 0x0380, 0x0383 }, { 0x038B, 0x038B }, + { 0x038D, 0x038D }, { 0x03A2, 0x03A2 }, { 0x0530, 0x0530 }, + { 0x0557, 0x0558 }, { 0x0560, 0x0560 }, { 0x0588, 0x0588 }, + { 0x058B, 0x058C }, { 0x0590, 0x0590 }, { 0x05C8, 0x05CF }, + { 0x05EB, 0x05EF }, { 0x05F5, 0x05FF }, { 0x061D, 0x061D }, + { 0x070E, 0x070E }, { 0x074B, 0x074C }, { 0x07B2, 0x07BF }, + { 0x07FB, 0x07FF }, { 0x082E, 0x082F }, { 0x083F, 0x083F }, + { 0x085C, 0x085D }, { 0x085F, 0x085F }, { 0x086B, 0x089F }, + { 0x08B5, 0x08B5 }, { 0x08BE, 0x08D3 }, { 0x0984, 0x0984 }, + { 0x098D, 0x098E }, { 0x0991, 0x0992 }, { 0x09A9, 0x09A9 }, + { 0x09B1, 0x09B1 }, { 0x09B3, 0x09B5 }, { 0x09BA, 0x09BB }, + { 0x09C5, 0x09C6 }, { 0x09C9, 0x09CA }, { 0x09CF, 0x09D6 }, + { 0x09D8, 0x09DB }, { 0x09DE, 0x09DE }, { 0x09E4, 0x09E5 }, + { 0x09FE, 0x0A00 }, { 0x0A04, 0x0A04 }, { 0x0A0B, 0x0A0E }, + { 0x0A11, 0x0A12 }, { 0x0A29, 0x0A29 }, { 0x0A31, 0x0A31 }, + { 0x0A34, 0x0A34 }, { 0x0A37, 0x0A37 }, { 0x0A3A, 0x0A3B }, + { 0x0A3D, 0x0A3D }, { 0x0A43, 0x0A46 }, { 0x0A49, 0x0A4A }, + { 0x0A4E, 0x0A50 }, { 0x0A52, 0x0A58 }, { 0x0A5D, 0x0A5D }, + { 0x0A5F, 0x0A65 }, { 0x0A76, 0x0A80 }, { 0x0A84, 0x0A84 }, + { 0x0A8E, 0x0A8E }, { 0x0A92, 0x0A92 }, { 0x0AA9, 0x0AA9 }, + { 0x0AB1, 0x0AB1 }, { 0x0AB4, 0x0AB4 }, { 0x0ABA, 0x0ABB }, + { 0x0AC6, 0x0AC6 }, { 0x0ACA, 0x0ACA }, { 0x0ACE, 0x0ACF }, + { 0x0AD1, 0x0ADF }, { 0x0AE4, 0x0AE5 }, { 0x0AF2, 0x0AF8 }, + { 0x0B00, 0x0B00 }, { 0x0B04, 0x0B04 }, { 0x0B0D, 0x0B0E }, + { 0x0B11, 0x0B12 }, { 0x0B29, 0x0B29 }, { 0x0B31, 0x0B31 }, + { 0x0B34, 0x0B34 }, { 0x0B3A, 0x0B3B }, { 0x0B45, 0x0B46 }, + { 0x0B49, 0x0B4A }, { 0x0B4E, 0x0B55 }, { 0x0B58, 0x0B5B }, + { 0x0B5E, 0x0B5E }, { 0x0B64, 0x0B65 }, { 0x0B78, 0x0B81 }, + { 0x0B84, 0x0B84 }, { 0x0B8B, 0x0B8D }, { 0x0B91, 0x0B91 }, + { 0x0B96, 0x0B98 }, { 0x0B9B, 0x0B9B }, { 0x0B9D, 0x0B9D }, + { 0x0BA0, 0x0BA2 }, { 0x0BA5, 0x0BA7 }, { 0x0BAB, 0x0BAD }, + { 0x0BBA, 0x0BBD }, { 0x0BC3, 0x0BC5 }, { 0x0BC9, 0x0BC9 }, + { 0x0BCE, 0x0BCF }, { 0x0BD1, 0x0BD6 }, { 0x0BD8, 0x0BE5 }, + { 0x0BFB, 0x0BFF }, { 0x0C04, 0x0C04 }, { 0x0C0D, 0x0C0D }, + { 0x0C11, 0x0C11 }, { 0x0C29, 0x0C29 }, { 0x0C3A, 0x0C3C }, + { 0x0C45, 0x0C45 }, { 0x0C49, 0x0C49 }, { 0x0C4E, 0x0C54 }, + { 0x0C57, 0x0C57 }, { 0x0C5B, 0x0C5F }, { 0x0C64, 0x0C65 }, + { 0x0C70, 0x0C77 }, { 0x0C84, 0x0C84 }, { 0x0C8D, 0x0C8D 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0x1BCA4, 0x1CFFF }, { 0x1D0F6, 0x1D0FF }, + { 0x1D127, 0x1D128 }, { 0x1D1E9, 0x1D1FF }, { 0x1D246, 0x1D2FF }, + { 0x1D357, 0x1D35F }, { 0x1D372, 0x1D3FF }, { 0x1D455, 0x1D455 }, + { 0x1D49D, 0x1D49D }, { 0x1D4A0, 0x1D4A1 }, { 0x1D4A3, 0x1D4A4 }, + { 0x1D4A7, 0x1D4A8 }, { 0x1D4AD, 0x1D4AD }, { 0x1D4BA, 0x1D4BA }, + { 0x1D4BC, 0x1D4BC }, { 0x1D4C4, 0x1D4C4 }, { 0x1D506, 0x1D506 }, + { 0x1D50B, 0x1D50C }, { 0x1D515, 0x1D515 }, { 0x1D51D, 0x1D51D }, + { 0x1D53A, 0x1D53A }, { 0x1D53F, 0x1D53F }, { 0x1D545, 0x1D545 }, + { 0x1D547, 0x1D549 }, { 0x1D551, 0x1D551 }, { 0x1D6A6, 0x1D6A7 }, + { 0x1D7CC, 0x1D7CD }, { 0x1DA8C, 0x1DA9A }, { 0x1DAA0, 0x1DAA0 }, + { 0x1DAB0, 0x1DFFF }, { 0x1E007, 0x1E007 }, { 0x1E019, 0x1E01A }, + { 0x1E022, 0x1E022 }, { 0x1E025, 0x1E025 }, { 0x1E02B, 0x1E7FF }, + { 0x1E8C5, 0x1E8C6 }, { 0x1E8D7, 0x1E8FF }, { 0x1E94B, 0x1E94F }, + { 0x1E95A, 0x1E95D }, { 0x1E960, 0x1EDFF }, { 0x1EE04, 0x1EE04 }, + { 0x1EE20, 0x1EE20 }, { 0x1EE23, 0x1EE23 }, { 0x1EE25, 0x1EE26 }, + { 0x1EE28, 0x1EE28 }, { 0x1EE33, 0x1EE33 }, { 0x1EE38, 0x1EE38 }, + { 0x1EE3A, 0x1EE3A }, { 0x1EE3C, 0x1EE41 }, { 0x1EE43, 0x1EE46 }, + { 0x1EE48, 0x1EE48 }, { 0x1EE4A, 0x1EE4A }, { 0x1EE4C, 0x1EE4C }, + { 0x1EE50, 0x1EE50 }, { 0x1EE53, 0x1EE53 }, { 0x1EE55, 0x1EE56 }, + { 0x1EE58, 0x1EE58 }, { 0x1EE5A, 0x1EE5A }, { 0x1EE5C, 0x1EE5C }, + { 0x1EE5E, 0x1EE5E }, { 0x1EE60, 0x1EE60 }, { 0x1EE63, 0x1EE63 }, + { 0x1EE65, 0x1EE66 }, { 0x1EE6B, 0x1EE6B }, { 0x1EE73, 0x1EE73 }, + { 0x1EE78, 0x1EE78 }, { 0x1EE7D, 0x1EE7D }, { 0x1EE7F, 0x1EE7F }, + { 0x1EE8A, 0x1EE8A }, { 0x1EE9C, 0x1EEA0 }, { 0x1EEA4, 0x1EEA4 }, + { 0x1EEAA, 0x1EEAA }, { 0x1EEBC, 0x1EEEF }, { 0x1EEF2, 0x1EFFF }, + { 0x1F02C, 0x1F02F }, { 0x1F094, 0x1F09F }, { 0x1F0AF, 0x1F0B0 }, + { 0x1F0C0, 0x1F0C0 }, { 0x1F0D0, 0x1F0D0 }, { 0x1F0F6, 0x1F0FF }, + { 0x1F10D, 0x1F10F }, { 0x1F12F, 0x1F12F }, { 0x1F16C, 0x1F16F }, + { 0x1F1AD, 0x1F1E5 }, { 0x1F203, 0x1F20F }, { 0x1F23C, 0x1F23F }, + { 0x1F249, 0x1F24F }, { 0x1F252, 0x1F25F }, { 0x1F266, 0x1F2FF }, + { 0x1F6D5, 0x1F6DF }, { 0x1F6ED, 0x1F6EF }, { 0x1F6F9, 0x1F6FF }, + { 0x1F774, 0x1F77F }, { 0x1F7D5, 0x1F7FF }, { 0x1F80C, 0x1F80F }, + { 0x1F848, 0x1F84F }, { 0x1F85A, 0x1F85F }, { 0x1F888, 0x1F88F }, + { 0x1F8AE, 0x1F8FF }, { 0x1F90C, 0x1F90F }, { 0x1F93F, 0x1F93F }, + { 0x1F94D, 0x1F94F }, { 0x1F96C, 0x1F97F }, { 0x1F998, 0x1F9BF }, + { 0x1F9C1, 0x1F9CF }, { 0x1F9E7, 0x1FFFF }, { 0x2A6D7, 0x2F7FF }, + { 0x2FA1E, 0xE0000 }, { 0xE0002, 0xE001F }, { 0xE0080, 0xE00FF }, + { 0xE01F0, 0x10FFFD } + }; + + int result; + +#define Lookup(cmp, table) \ + bisearch(cmp, table, \ + (int) (sizeof(table) / sizeof(struct interval) - 1)) + + /* test for 8-bit control characters */ + if (cmp == 0) { + result = 0; + } else if (cmp < 32 || (cmp >= 0x7f && cmp < 0xa0)) { + result = -1; + } else if (cmp == 0xad) { + result = use_latin1; + } else if (Lookup(cmp, combining)) { + /* binary search in table of non-spacing characters */ + result = 0; + } else { + /* if we arrive here, cmp is not a combining or C0/C1 control character */ + result = 1; + + if (cmp >= 0x1100 && + (cmp <= 0x115f || /* Hangul Jamo init. consonants */ + cmp == 0x2329 || + cmp == 0x232a || + (cmp >= 0x2e80 && cmp <= 0x4dbf && + cmp != 0x303f) || /* CJK ... Yi */ + (cmp >= 0x4e00 && cmp <= 0xa4cf) || /* CJK Unified Ideographs, Yi */ + (cmp >= 0xa960 && cmp <= 0xa97f) || /* Hangul Jamo Extended-A */ + (cmp >= 0xac00 && cmp <= 0xd7a3) || /* Hangul Syllables */ + (cmp >= 0xf900 && cmp <= 0xfaff) || /* CJK Compatibility Ideographs */ + (cmp >= 0xfe10 && cmp <= 0xfe19) || /* Vertical forms */ + (cmp >= 0xfe30 && cmp <= 0xfe6f) || /* CJK Compatibility Forms */ + (cmp >= 0xff00 && cmp <= 0xff60) || /* Fullwidth Forms */ + (cmp >= 0xffe0 && cmp <= 0xffe6) || + (cmp >= 0x20000 && cmp <= 0x2fffd) || + (cmp >= 0x30000 && cmp <= 0x3fffd))) { + result = 2; + } + if (cmp >= unknowns[0].first && Lookup(cmp, unknowns)) { + result = -1; + } + } + return result; +} + + +int mk_wcswidth(const wchar_t *pwcs, size_t n) +{ + int width = 0; + + for (;*pwcs && n-- > 0; pwcs++) { + int w; + + if ((w = mk_wcwidth(*pwcs)) < 0) + return -1; + else + width += w; + } + + return width; +} + + +/* + * The following functions are the same as mk_wcwidth() and + * mk_wcwidth_cjk(), 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 variant might be useful for users of + * CJK legacy encodings who want to migrate to UCS without changing + * the traditional terminal character-width behaviour. It is not + * otherwise recommended for general use. + */ +int mk_wcwidth_cjk(wchar_t ucs) +{ + /* sorted list of non-overlapping intervals of East Asian Ambiguous + * characters, generated by + * + * uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf \ + * +E000..F8FF \ + * +F0000..FFFFD \ + * +100000..10FFFD c + * + * "WIDTH-A" is a file extracted from EastAsianWidth.txt by selecting + * only those with width "A", and omitting: + * + * 0xAD + * all lines with "COMBINING" + * + * (uniset does not recognize the range expressions in WIDTH-A). + */ + static const struct interval ambiguous[] = { + { 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 }, + { 0x00AA, 0x00AA }, { 0x00AE, 0x00AE }, { 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, 0x014B }, { 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 }, + { 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB }, + { 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB }, + { 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0391, 0x03A1 }, + { 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 }, + { 0x0401, 0x0401 }, { 0x0410, 0x044F }, { 0x0451, 0x0451 }, + { 0x2010, 0x2010 }, { 0x2013, 0x2016 }, { 0x2018, 0x2019 }, + { 0x201C, 0x201D }, { 0x2020, 0x2022 }, { 0x2024, 0x2027 }, + { 0x2030, 0x2030 }, { 0x2032, 0x2033 }, { 0x2035, 0x2035 }, + { 0x203B, 0x203B }, { 0x203E, 0x203E }, { 0x2074, 0x2074 }, + { 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC }, + { 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 }, + { 0x2113, 0x2113 }, { 0x2116, 0x2116 }, { 0x2121, 0x2122 }, + { 0x2126, 0x2126 }, { 0x212B, 0x212B }, { 0x2153, 0x2154 }, + { 0x215B, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 }, + { 0x2189, 0x2189 }, { 0x2190, 0x2199 }, { 0x21B8, 0x21B9 }, + { 0x21D2, 0x21D2 }, { 0x21D4, 0x21D4 }, { 0x21E7, 0x21E7 }, + { 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, 0x24E9 }, + { 0x24EB, 0x254B }, { 0x2550, 0x2573 }, { 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 }, + { 0x269E, 0x269F }, { 0x26BF, 0x26BF }, { 0x26C6, 0x26CD }, + { 0x26CF, 0x26D3 }, { 0x26D5, 0x26E1 }, { 0x26E3, 0x26E3 }, + { 0x26E8, 0x26E9 }, { 0x26EB, 0x26F1 }, { 0x26F4, 0x26F4 }, + { 0x26F6, 0x26F9 }, { 0x26FB, 0x26FC }, { 0x26FE, 0x26FF }, + { 0x273D, 0x273D }, { 0x2776, 0x277F }, { 0x2B56, 0x2B59 }, + { 0x3248, 0x324F }, { 0xE000, 0xF8FF }, { 0xFFFD, 0xFFFD }, + { 0x1F100, 0x1F10A }, { 0x1F110, 0x1F12D }, { 0x1F130, 0x1F169 }, + { 0x1F170, 0x1F18D }, { 0x1F18F, 0x1F190 }, { 0x1F19B, 0x1F1AC }, + { 0xF0000, 0xFFFFD }, { 0x100000, 0x10FFFD } + }; + + /* binary search in table of non-spacing characters */ + if (Lookup((unsigned long) ucs, ambiguous)) + return 2; + + return mk_wcwidth(ucs); +} + + +int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n) +{ + int width = 0; + + for (;*pwcs && n-- > 0; pwcs++) { + int w; + + if ((w = mk_wcwidth_cjk(*pwcs)) < 0) + return -1; + else + width += w; + } + + return width; +} -- cgit v1.2.3