2010-01-24 12:14:03 +05:30
|
|
|
|
/*
|
|
|
|
|
|
* 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 -- 2007-05-26 (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
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
2010-01-31 20:34:30 +05:30
|
|
|
|
/* Assigned Unicode character ranges:
|
|
|
|
|
|
* Plane Range
|
|
|
|
|
|
* 0 0000–FFFF Basic Multilingual Plane
|
|
|
|
|
|
* 1 10000–1FFFF Supplementary Multilingual Plane
|
|
|
|
|
|
* 2 20000–2FFFF Supplementary Ideographic Plane
|
|
|
|
|
|
* 3 30000-3FFFF Tertiary Ideographic Plane (no chars assigned yet)
|
|
|
|
|
|
* 4-13 40000–DFFFF currently unassigned
|
|
|
|
|
|
* 14 E0000–EFFFF Supplementary Special-purpose Plane
|
|
|
|
|
|
* 15 F0000–FFFFF Supplementary Private Use Area-A
|
|
|
|
|
|
* 16 100000–10FFFF Supplementary Private Use Area-B
|
|
|
|
|
|
*
|
|
|
|
|
|
* "Supplementary Special-purpose Plane currently contains non-graphical
|
|
|
|
|
|
* characters in two blocks of 128 and 240 characters. The first block
|
|
|
|
|
|
* is for language tag characters for use when language cannot be indicated
|
|
|
|
|
|
* through other protocols (such as the xml:lang attribute in XML).
|
|
|
|
|
|
* The other block contains glyph variation selectors to indicate
|
|
|
|
|
|
* an alternate glyph for a character that cannot be determined by context."
|
|
|
|
|
|
*
|
|
|
|
|
|
* In simpler terms: it is a tool to fix the "Han unification" mess
|
|
|
|
|
|
* created by Unicode committee, to select Chinese/Japanese/Korean/Taiwan
|
|
|
|
|
|
* version of a character. (They forgot that the whole purpose of the Unicode
|
|
|
|
|
|
* was to be able to write all chars in one charset without such tricks).
|
|
|
|
|
|
* Until East Asian users say it is actually necessary to support these
|
|
|
|
|
|
* code points in console applications like busybox
|
|
|
|
|
|
* (i.e. do these chars ever appear in filenames, hostnames, text files
|
|
|
|
|
|
* and such?), we are treating these code points as invalid.
|
|
|
|
|
|
*
|
|
|
|
|
|
* Tertiary Ideographic Plane is also ignored for now,
|
|
|
|
|
|
* until Unicode committee assigns something there.
|
|
|
|
|
|
*/
|
|
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
#if CONFIG_LAST_SUPPORTED_WCHAR < 126 || CONFIG_LAST_SUPPORTED_WCHAR >= 0x30000
|
|
|
|
|
|
# define LAST_SUPPORTED_WCHAR 0x2ffff
|
2010-01-29 13:41:47 +05:30
|
|
|
|
#else
|
|
|
|
|
|
# define LAST_SUPPORTED_WCHAR CONFIG_LAST_SUPPORTED_WCHAR
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
#if LAST_SUPPORTED_WCHAR >= 0x300
|
2010-01-24 12:14:03 +05:30
|
|
|
|
struct interval {
|
|
|
|
|
|
uint16_t first;
|
|
|
|
|
|
uint16_t last;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/* auxiliary function for binary search in interval table */
|
2010-01-25 17:54:06 +05:30
|
|
|
|
static int in_interval_table(unsigned ucs, const struct interval *table, unsigned max)
|
2010-01-24 12:14:03 +05:30
|
|
|
|
{
|
2010-01-25 17:54:06 +05:30
|
|
|
|
unsigned min;
|
2010-01-24 12:14:03 +05:30
|
|
|
|
unsigned mid;
|
|
|
|
|
|
|
|
|
|
|
|
if (ucs < table[0].first || ucs > table[max].last)
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
2010-01-25 17:54:06 +05:30
|
|
|
|
min = 0;
|
2010-01-24 12:14:03 +05:30
|
|
|
|
while (max >= min) {
|
|
|
|
|
|
mid = (min + max) / 2;
|
|
|
|
|
|
if (ucs > table[mid].last)
|
2010-01-25 17:54:06 +05:30
|
|
|
|
min = mid + 1;
|
2010-01-24 12:14:03 +05:30
|
|
|
|
else if (ucs < table[mid].first)
|
2010-01-25 17:54:06 +05:30
|
|
|
|
max = mid - 1;
|
2010-01-24 12:14:03 +05:30
|
|
|
|
else
|
2010-01-25 17:54:06 +05:30
|
|
|
|
return 1;
|
|
|
|
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int in_uint16_table(unsigned ucs, const uint16_t *table, unsigned max)
|
|
|
|
|
|
{
|
|
|
|
|
|
unsigned min;
|
|
|
|
|
|
unsigned mid;
|
|
|
|
|
|
unsigned first, last;
|
|
|
|
|
|
|
|
|
|
|
|
first = table[0] >> 2;
|
|
|
|
|
|
last = first + (table[0] & 3);
|
|
|
|
|
|
if (ucs < first || ucs > last)
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
|
|
min = 0;
|
|
|
|
|
|
while (max >= min) {
|
|
|
|
|
|
mid = (min + max) / 2;
|
|
|
|
|
|
first = table[mid] >> 2;
|
|
|
|
|
|
last = first + (table[mid] & 3);
|
|
|
|
|
|
if (ucs > last)
|
|
|
|
|
|
min = mid + 1;
|
|
|
|
|
|
else if (ucs < first)
|
|
|
|
|
|
max = mid - 1;
|
|
|
|
|
|
else
|
|
|
|
|
|
return 1;
|
2010-01-24 12:14:03 +05:30
|
|
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
2010-01-29 13:41:47 +05:30
|
|
|
|
#endif
|
2010-01-24 12:14:03 +05:30
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* 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.
|
|
|
|
|
|
*
|
|
|
|
|
|
* - SOFT HYPHEN (U+00AD) has a column width of 1.
|
|
|
|
|
|
*
|
|
|
|
|
|
* - 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.
|
|
|
|
|
|
*
|
|
|
|
|
|
* - 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 wchar_t characters are encoded
|
|
|
|
|
|
* in ISO 10646.
|
|
|
|
|
|
*/
|
|
|
|
|
|
static int wcwidth(unsigned ucs)
|
|
|
|
|
|
{
|
2010-01-31 21:04:37 +05:30
|
|
|
|
#if LAST_SUPPORTED_WCHAR >= 0x300
|
2010-01-24 12:14:03 +05:30
|
|
|
|
/* 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[] = {
|
2010-01-25 17:54:06 +05:30
|
|
|
|
#define BIG_(a,b) { a, b },
|
|
|
|
|
|
#define PAIR(a,b)
|
|
|
|
|
|
/* PAIR if < 0x4000 and no more than 4 chars big */
|
|
|
|
|
|
BIG_(0x0300, 0x036F)
|
|
|
|
|
|
PAIR(0x0483, 0x0486)
|
|
|
|
|
|
PAIR(0x0488, 0x0489)
|
|
|
|
|
|
BIG_(0x0591, 0x05BD)
|
|
|
|
|
|
PAIR(0x05BF, 0x05BF)
|
|
|
|
|
|
PAIR(0x05C1, 0x05C2)
|
|
|
|
|
|
PAIR(0x05C4, 0x05C5)
|
|
|
|
|
|
PAIR(0x05C7, 0x05C7)
|
|
|
|
|
|
PAIR(0x0600, 0x0603)
|
|
|
|
|
|
BIG_(0x0610, 0x0615)
|
|
|
|
|
|
BIG_(0x064B, 0x065E)
|
|
|
|
|
|
PAIR(0x0670, 0x0670)
|
|
|
|
|
|
BIG_(0x06D6, 0x06E4)
|
|
|
|
|
|
PAIR(0x06E7, 0x06E8)
|
|
|
|
|
|
PAIR(0x06EA, 0x06ED)
|
|
|
|
|
|
PAIR(0x070F, 0x070F)
|
|
|
|
|
|
PAIR(0x0711, 0x0711)
|
|
|
|
|
|
BIG_(0x0730, 0x074A)
|
|
|
|
|
|
BIG_(0x07A6, 0x07B0)
|
|
|
|
|
|
BIG_(0x07EB, 0x07F3)
|
|
|
|
|
|
PAIR(0x0901, 0x0902)
|
|
|
|
|
|
PAIR(0x093C, 0x093C)
|
|
|
|
|
|
BIG_(0x0941, 0x0948)
|
|
|
|
|
|
PAIR(0x094D, 0x094D)
|
|
|
|
|
|
PAIR(0x0951, 0x0954)
|
|
|
|
|
|
PAIR(0x0962, 0x0963)
|
|
|
|
|
|
PAIR(0x0981, 0x0981)
|
|
|
|
|
|
PAIR(0x09BC, 0x09BC)
|
|
|
|
|
|
PAIR(0x09C1, 0x09C4)
|
|
|
|
|
|
PAIR(0x09CD, 0x09CD)
|
|
|
|
|
|
PAIR(0x09E2, 0x09E3)
|
|
|
|
|
|
PAIR(0x0A01, 0x0A02)
|
|
|
|
|
|
PAIR(0x0A3C, 0x0A3C)
|
|
|
|
|
|
PAIR(0x0A41, 0x0A42)
|
|
|
|
|
|
PAIR(0x0A47, 0x0A48)
|
|
|
|
|
|
PAIR(0x0A4B, 0x0A4D)
|
|
|
|
|
|
PAIR(0x0A70, 0x0A71)
|
|
|
|
|
|
PAIR(0x0A81, 0x0A82)
|
|
|
|
|
|
PAIR(0x0ABC, 0x0ABC)
|
|
|
|
|
|
BIG_(0x0AC1, 0x0AC5)
|
|
|
|
|
|
PAIR(0x0AC7, 0x0AC8)
|
|
|
|
|
|
PAIR(0x0ACD, 0x0ACD)
|
|
|
|
|
|
PAIR(0x0AE2, 0x0AE3)
|
|
|
|
|
|
PAIR(0x0B01, 0x0B01)
|
|
|
|
|
|
PAIR(0x0B3C, 0x0B3C)
|
|
|
|
|
|
PAIR(0x0B3F, 0x0B3F)
|
|
|
|
|
|
PAIR(0x0B41, 0x0B43)
|
|
|
|
|
|
PAIR(0x0B4D, 0x0B4D)
|
|
|
|
|
|
PAIR(0x0B56, 0x0B56)
|
|
|
|
|
|
PAIR(0x0B82, 0x0B82)
|
|
|
|
|
|
PAIR(0x0BC0, 0x0BC0)
|
|
|
|
|
|
PAIR(0x0BCD, 0x0BCD)
|
|
|
|
|
|
PAIR(0x0C3E, 0x0C40)
|
|
|
|
|
|
PAIR(0x0C46, 0x0C48)
|
|
|
|
|
|
PAIR(0x0C4A, 0x0C4D)
|
|
|
|
|
|
PAIR(0x0C55, 0x0C56)
|
|
|
|
|
|
PAIR(0x0CBC, 0x0CBC)
|
|
|
|
|
|
PAIR(0x0CBF, 0x0CBF)
|
|
|
|
|
|
PAIR(0x0CC6, 0x0CC6)
|
|
|
|
|
|
PAIR(0x0CCC, 0x0CCD)
|
|
|
|
|
|
PAIR(0x0CE2, 0x0CE3)
|
|
|
|
|
|
PAIR(0x0D41, 0x0D43)
|
|
|
|
|
|
PAIR(0x0D4D, 0x0D4D)
|
|
|
|
|
|
PAIR(0x0DCA, 0x0DCA)
|
|
|
|
|
|
PAIR(0x0DD2, 0x0DD4)
|
|
|
|
|
|
PAIR(0x0DD6, 0x0DD6)
|
|
|
|
|
|
PAIR(0x0E31, 0x0E31)
|
|
|
|
|
|
BIG_(0x0E34, 0x0E3A)
|
|
|
|
|
|
BIG_(0x0E47, 0x0E4E)
|
|
|
|
|
|
PAIR(0x0EB1, 0x0EB1)
|
|
|
|
|
|
BIG_(0x0EB4, 0x0EB9)
|
|
|
|
|
|
PAIR(0x0EBB, 0x0EBC)
|
|
|
|
|
|
BIG_(0x0EC8, 0x0ECD)
|
|
|
|
|
|
PAIR(0x0F18, 0x0F19)
|
|
|
|
|
|
PAIR(0x0F35, 0x0F35)
|
|
|
|
|
|
PAIR(0x0F37, 0x0F37)
|
|
|
|
|
|
PAIR(0x0F39, 0x0F39)
|
|
|
|
|
|
BIG_(0x0F71, 0x0F7E)
|
|
|
|
|
|
BIG_(0x0F80, 0x0F84)
|
|
|
|
|
|
PAIR(0x0F86, 0x0F87)
|
|
|
|
|
|
PAIR(0x0FC6, 0x0FC6)
|
|
|
|
|
|
BIG_(0x0F90, 0x0F97)
|
|
|
|
|
|
BIG_(0x0F99, 0x0FBC)
|
|
|
|
|
|
PAIR(0x102D, 0x1030)
|
|
|
|
|
|
PAIR(0x1032, 0x1032)
|
|
|
|
|
|
PAIR(0x1036, 0x1037)
|
|
|
|
|
|
PAIR(0x1039, 0x1039)
|
|
|
|
|
|
PAIR(0x1058, 0x1059)
|
|
|
|
|
|
BIG_(0x1160, 0x11FF)
|
|
|
|
|
|
PAIR(0x135F, 0x135F)
|
|
|
|
|
|
PAIR(0x1712, 0x1714)
|
|
|
|
|
|
PAIR(0x1732, 0x1734)
|
|
|
|
|
|
PAIR(0x1752, 0x1753)
|
|
|
|
|
|
PAIR(0x1772, 0x1773)
|
|
|
|
|
|
PAIR(0x17B4, 0x17B5)
|
|
|
|
|
|
BIG_(0x17B7, 0x17BD)
|
|
|
|
|
|
PAIR(0x17C6, 0x17C6)
|
|
|
|
|
|
BIG_(0x17C9, 0x17D3)
|
|
|
|
|
|
PAIR(0x17DD, 0x17DD)
|
|
|
|
|
|
PAIR(0x180B, 0x180D)
|
|
|
|
|
|
PAIR(0x18A9, 0x18A9)
|
|
|
|
|
|
PAIR(0x1920, 0x1922)
|
|
|
|
|
|
PAIR(0x1927, 0x1928)
|
|
|
|
|
|
PAIR(0x1932, 0x1932)
|
|
|
|
|
|
PAIR(0x1939, 0x193B)
|
|
|
|
|
|
PAIR(0x1A17, 0x1A18)
|
|
|
|
|
|
PAIR(0x1B00, 0x1B03)
|
|
|
|
|
|
PAIR(0x1B34, 0x1B34)
|
|
|
|
|
|
BIG_(0x1B36, 0x1B3A)
|
|
|
|
|
|
PAIR(0x1B3C, 0x1B3C)
|
|
|
|
|
|
PAIR(0x1B42, 0x1B42)
|
|
|
|
|
|
BIG_(0x1B6B, 0x1B73)
|
|
|
|
|
|
BIG_(0x1DC0, 0x1DCA)
|
|
|
|
|
|
PAIR(0x1DFE, 0x1DFF)
|
|
|
|
|
|
BIG_(0x200B, 0x200F)
|
|
|
|
|
|
BIG_(0x202A, 0x202E)
|
|
|
|
|
|
PAIR(0x2060, 0x2063)
|
|
|
|
|
|
BIG_(0x206A, 0x206F)
|
|
|
|
|
|
BIG_(0x20D0, 0x20EF)
|
|
|
|
|
|
BIG_(0x302A, 0x302F)
|
|
|
|
|
|
PAIR(0x3099, 0x309A)
|
|
|
|
|
|
/* Too big to be packed in PAIRs: */
|
|
|
|
|
|
{ 0xA806, 0xA806 },
|
|
|
|
|
|
{ 0xA80B, 0xA80B },
|
|
|
|
|
|
{ 0xA825, 0xA826 },
|
|
|
|
|
|
{ 0xFB1E, 0xFB1E },
|
|
|
|
|
|
{ 0xFE00, 0xFE0F },
|
|
|
|
|
|
{ 0xFE20, 0xFE23 },
|
|
|
|
|
|
{ 0xFEFF, 0xFEFF },
|
|
|
|
|
|
{ 0xFFF9, 0xFFFB }
|
|
|
|
|
|
#undef BIG_
|
|
|
|
|
|
#undef PAIR
|
|
|
|
|
|
};
|
|
|
|
|
|
static const uint16_t combining1[] = {
|
|
|
|
|
|
#define BIG_(a,b)
|
|
|
|
|
|
#define PAIR(a,b) (a << 2) | (b-a),
|
|
|
|
|
|
/* Exact copy-n-paste of the above: */
|
|
|
|
|
|
BIG_(0x0300, 0x036F)
|
|
|
|
|
|
PAIR(0x0483, 0x0486)
|
|
|
|
|
|
PAIR(0x0488, 0x0489)
|
|
|
|
|
|
BIG_(0x0591, 0x05BD)
|
|
|
|
|
|
PAIR(0x05BF, 0x05BF)
|
|
|
|
|
|
PAIR(0x05C1, 0x05C2)
|
|
|
|
|
|
PAIR(0x05C4, 0x05C5)
|
|
|
|
|
|
PAIR(0x05C7, 0x05C7)
|
|
|
|
|
|
PAIR(0x0600, 0x0603)
|
|
|
|
|
|
BIG_(0x0610, 0x0615)
|
|
|
|
|
|
BIG_(0x064B, 0x065E)
|
|
|
|
|
|
PAIR(0x0670, 0x0670)
|
|
|
|
|
|
BIG_(0x06D6, 0x06E4)
|
|
|
|
|
|
PAIR(0x06E7, 0x06E8)
|
|
|
|
|
|
PAIR(0x06EA, 0x06ED)
|
|
|
|
|
|
PAIR(0x070F, 0x070F)
|
|
|
|
|
|
PAIR(0x0711, 0x0711)
|
|
|
|
|
|
BIG_(0x0730, 0x074A)
|
|
|
|
|
|
BIG_(0x07A6, 0x07B0)
|
|
|
|
|
|
BIG_(0x07EB, 0x07F3)
|
|
|
|
|
|
PAIR(0x0901, 0x0902)
|
|
|
|
|
|
PAIR(0x093C, 0x093C)
|
|
|
|
|
|
BIG_(0x0941, 0x0948)
|
|
|
|
|
|
PAIR(0x094D, 0x094D)
|
|
|
|
|
|
PAIR(0x0951, 0x0954)
|
|
|
|
|
|
PAIR(0x0962, 0x0963)
|
|
|
|
|
|
PAIR(0x0981, 0x0981)
|
|
|
|
|
|
PAIR(0x09BC, 0x09BC)
|
|
|
|
|
|
PAIR(0x09C1, 0x09C4)
|
|
|
|
|
|
PAIR(0x09CD, 0x09CD)
|
|
|
|
|
|
PAIR(0x09E2, 0x09E3)
|
|
|
|
|
|
PAIR(0x0A01, 0x0A02)
|
|
|
|
|
|
PAIR(0x0A3C, 0x0A3C)
|
|
|
|
|
|
PAIR(0x0A41, 0x0A42)
|
|
|
|
|
|
PAIR(0x0A47, 0x0A48)
|
|
|
|
|
|
PAIR(0x0A4B, 0x0A4D)
|
|
|
|
|
|
PAIR(0x0A70, 0x0A71)
|
|
|
|
|
|
PAIR(0x0A81, 0x0A82)
|
|
|
|
|
|
PAIR(0x0ABC, 0x0ABC)
|
|
|
|
|
|
BIG_(0x0AC1, 0x0AC5)
|
|
|
|
|
|
PAIR(0x0AC7, 0x0AC8)
|
|
|
|
|
|
PAIR(0x0ACD, 0x0ACD)
|
|
|
|
|
|
PAIR(0x0AE2, 0x0AE3)
|
|
|
|
|
|
PAIR(0x0B01, 0x0B01)
|
|
|
|
|
|
PAIR(0x0B3C, 0x0B3C)
|
|
|
|
|
|
PAIR(0x0B3F, 0x0B3F)
|
|
|
|
|
|
PAIR(0x0B41, 0x0B43)
|
|
|
|
|
|
PAIR(0x0B4D, 0x0B4D)
|
|
|
|
|
|
PAIR(0x0B56, 0x0B56)
|
|
|
|
|
|
PAIR(0x0B82, 0x0B82)
|
|
|
|
|
|
PAIR(0x0BC0, 0x0BC0)
|
|
|
|
|
|
PAIR(0x0BCD, 0x0BCD)
|
|
|
|
|
|
PAIR(0x0C3E, 0x0C40)
|
|
|
|
|
|
PAIR(0x0C46, 0x0C48)
|
|
|
|
|
|
PAIR(0x0C4A, 0x0C4D)
|
|
|
|
|
|
PAIR(0x0C55, 0x0C56)
|
|
|
|
|
|
PAIR(0x0CBC, 0x0CBC)
|
|
|
|
|
|
PAIR(0x0CBF, 0x0CBF)
|
|
|
|
|
|
PAIR(0x0CC6, 0x0CC6)
|
|
|
|
|
|
PAIR(0x0CCC, 0x0CCD)
|
|
|
|
|
|
PAIR(0x0CE2, 0x0CE3)
|
|
|
|
|
|
PAIR(0x0D41, 0x0D43)
|
|
|
|
|
|
PAIR(0x0D4D, 0x0D4D)
|
|
|
|
|
|
PAIR(0x0DCA, 0x0DCA)
|
|
|
|
|
|
PAIR(0x0DD2, 0x0DD4)
|
|
|
|
|
|
PAIR(0x0DD6, 0x0DD6)
|
|
|
|
|
|
PAIR(0x0E31, 0x0E31)
|
|
|
|
|
|
BIG_(0x0E34, 0x0E3A)
|
|
|
|
|
|
BIG_(0x0E47, 0x0E4E)
|
|
|
|
|
|
PAIR(0x0EB1, 0x0EB1)
|
|
|
|
|
|
BIG_(0x0EB4, 0x0EB9)
|
|
|
|
|
|
PAIR(0x0EBB, 0x0EBC)
|
|
|
|
|
|
BIG_(0x0EC8, 0x0ECD)
|
|
|
|
|
|
PAIR(0x0F18, 0x0F19)
|
|
|
|
|
|
PAIR(0x0F35, 0x0F35)
|
|
|
|
|
|
PAIR(0x0F37, 0x0F37)
|
|
|
|
|
|
PAIR(0x0F39, 0x0F39)
|
|
|
|
|
|
BIG_(0x0F71, 0x0F7E)
|
|
|
|
|
|
BIG_(0x0F80, 0x0F84)
|
|
|
|
|
|
PAIR(0x0F86, 0x0F87)
|
|
|
|
|
|
PAIR(0x0FC6, 0x0FC6)
|
|
|
|
|
|
BIG_(0x0F90, 0x0F97)
|
|
|
|
|
|
BIG_(0x0F99, 0x0FBC)
|
|
|
|
|
|
PAIR(0x102D, 0x1030)
|
|
|
|
|
|
PAIR(0x1032, 0x1032)
|
|
|
|
|
|
PAIR(0x1036, 0x1037)
|
|
|
|
|
|
PAIR(0x1039, 0x1039)
|
|
|
|
|
|
PAIR(0x1058, 0x1059)
|
|
|
|
|
|
BIG_(0x1160, 0x11FF)
|
|
|
|
|
|
PAIR(0x135F, 0x135F)
|
|
|
|
|
|
PAIR(0x1712, 0x1714)
|
|
|
|
|
|
PAIR(0x1732, 0x1734)
|
|
|
|
|
|
PAIR(0x1752, 0x1753)
|
|
|
|
|
|
PAIR(0x1772, 0x1773)
|
|
|
|
|
|
PAIR(0x17B4, 0x17B5)
|
|
|
|
|
|
BIG_(0x17B7, 0x17BD)
|
|
|
|
|
|
PAIR(0x17C6, 0x17C6)
|
|
|
|
|
|
BIG_(0x17C9, 0x17D3)
|
|
|
|
|
|
PAIR(0x17DD, 0x17DD)
|
|
|
|
|
|
PAIR(0x180B, 0x180D)
|
|
|
|
|
|
PAIR(0x18A9, 0x18A9)
|
|
|
|
|
|
PAIR(0x1920, 0x1922)
|
|
|
|
|
|
PAIR(0x1927, 0x1928)
|
|
|
|
|
|
PAIR(0x1932, 0x1932)
|
|
|
|
|
|
PAIR(0x1939, 0x193B)
|
|
|
|
|
|
PAIR(0x1A17, 0x1A18)
|
|
|
|
|
|
PAIR(0x1B00, 0x1B03)
|
|
|
|
|
|
PAIR(0x1B34, 0x1B34)
|
|
|
|
|
|
BIG_(0x1B36, 0x1B3A)
|
|
|
|
|
|
PAIR(0x1B3C, 0x1B3C)
|
|
|
|
|
|
PAIR(0x1B42, 0x1B42)
|
|
|
|
|
|
BIG_(0x1B6B, 0x1B73)
|
|
|
|
|
|
BIG_(0x1DC0, 0x1DCA)
|
|
|
|
|
|
PAIR(0x1DFE, 0x1DFF)
|
|
|
|
|
|
BIG_(0x200B, 0x200F)
|
|
|
|
|
|
BIG_(0x202A, 0x202E)
|
|
|
|
|
|
PAIR(0x2060, 0x2063)
|
|
|
|
|
|
BIG_(0x206A, 0x206F)
|
|
|
|
|
|
BIG_(0x20D0, 0x20EF)
|
|
|
|
|
|
BIG_(0x302A, 0x302F)
|
|
|
|
|
|
PAIR(0x3099, 0x309A)
|
|
|
|
|
|
#undef BIG_
|
|
|
|
|
|
#undef PAIR
|
|
|
|
|
|
};
|
|
|
|
|
|
struct CHECK {
|
|
|
|
|
|
#define BIG_(a,b) char big##a[b-a <= 3 ? -1 : 1];
|
|
|
|
|
|
#define PAIR(a,b) char pair##a[b-a > 3 ? -1 : 1];
|
|
|
|
|
|
/* Copy-n-paste it here again to verify correctness */
|
|
|
|
|
|
#undef BIG_
|
|
|
|
|
|
#undef PAIR
|
2010-01-24 12:14:03 +05:30
|
|
|
|
};
|
2010-01-29 13:41:47 +05:30
|
|
|
|
#endif
|
2010-01-24 12:14:03 +05:30
|
|
|
|
|
|
|
|
|
|
if (ucs == 0)
|
|
|
|
|
|
return 0;
|
2010-01-31 21:04:37 +05:30
|
|
|
|
|
|
|
|
|
|
/* Test for 8-bit control characters (00-1f, 80-9f, 7f) */
|
2010-01-24 12:14:03 +05:30
|
|
|
|
if ((ucs & ~0x80) < 0x20 || ucs == 0x7f)
|
|
|
|
|
|
return -1;
|
2010-01-31 21:04:37 +05:30
|
|
|
|
/* Quick abort if it is an obviously invalid char */
|
|
|
|
|
|
if (ucs > LAST_SUPPORTED_WCHAR)
|
|
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
|
|
|
|
/* Optimization: no combining chars below 0x300 */
|
|
|
|
|
|
if (LAST_SUPPORTED_WCHAR < 0x300 || ucs < 0x300)
|
2010-01-24 12:14:03 +05:30
|
|
|
|
return 1;
|
|
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
#if LAST_SUPPORTED_WCHAR >= 0x300
|
|
|
|
|
|
/* Binary search in table of non-spacing characters */
|
2010-01-25 17:54:06 +05:30
|
|
|
|
if (in_interval_table(ucs, combining, ARRAY_SIZE(combining) - 1))
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
if (in_uint16_table(ucs, combining1, ARRAY_SIZE(combining1) - 1))
|
2010-01-24 12:14:03 +05:30
|
|
|
|
return 0;
|
|
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
/* Optimization: all chars below 0x1100 are not double-width */
|
|
|
|
|
|
if (LAST_SUPPORTED_WCHAR < 0x1100 || ucs < 0x1100)
|
2010-01-24 12:14:03 +05:30
|
|
|
|
return 1;
|
|
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
# if LAST_SUPPORTED_WCHAR >= 0x1100
|
|
|
|
|
|
/* Invalid code points: */
|
|
|
|
|
|
/* High (d800..dbff) and low (dc00..dfff) surrogates (valid only in UTF16) */
|
|
|
|
|
|
/* Private Use Area (e000..f8ff) */
|
|
|
|
|
|
/* Noncharacters fdd0..fdef */
|
|
|
|
|
|
if ((LAST_SUPPORTED_WCHAR >= 0xd800 && ucs >= 0xd800 && ucs <= 0xf8ff)
|
|
|
|
|
|
|| (LAST_SUPPORTED_WCHAR >= 0xfdd0 && ucs >= 0xfdd0 && ucs <= 0xfdef)
|
2010-01-31 20:34:30 +05:30
|
|
|
|
) {
|
|
|
|
|
|
return -1;
|
|
|
|
|
|
}
|
|
|
|
|
|
/* 0xfffe and 0xffff in every plane are invalid */
|
2010-01-31 21:04:37 +05:30
|
|
|
|
if (LAST_SUPPORTED_WCHAR >= 0xfffe && ((ucs & 0xfffe) == 0xfffe)) {
|
2010-01-31 20:34:30 +05:30
|
|
|
|
return -1;
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
# if LAST_SUPPORTED_WCHAR >= 0x10000
|
2010-01-31 21:04:37 +05:30
|
|
|
|
if (ucs >= 0x10000) {
|
|
|
|
|
|
/* Combining chars in Supplementary Multilingual Plane 0x1xxxx */
|
|
|
|
|
|
static const struct interval combining0x10000[] = {
|
|
|
|
|
|
{ 0x0A01, 0x0A03 }, { 0x0A05, 0x0A06 }, { 0x0A0C, 0x0A0F },
|
|
|
|
|
|
{ 0x0A38, 0x0A3A }, { 0x0A3F, 0x0A3F }, { 0xD167, 0xD169 },
|
|
|
|
|
|
{ 0xD173, 0xD182 }, { 0xD185, 0xD18B }, { 0xD1AA, 0xD1AD },
|
|
|
|
|
|
{ 0xD242, 0xD244 }
|
|
|
|
|
|
};
|
|
|
|
|
|
/* Binary search in table of non-spacing characters in Supplementary Multilingual Plane */
|
|
|
|
|
|
if (in_interval_table(ucs ^ 0x10000, combining0x10000, ARRAY_SIZE(combining0x10000) - 1))
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
/* Check a few non-spacing chars in Supplementary Special-purpose Plane 0xExxxx */
|
|
|
|
|
|
if (LAST_SUPPORTED_WCHAR >= 0xE0001
|
|
|
|
|
|
&& ( ucs == 0xE0001
|
|
|
|
|
|
|| (ucs >= 0xE0020 && ucs <= 0xE007F)
|
|
|
|
|
|
|| (ucs >= 0xE0100 && ucs <= 0xE01EF)
|
|
|
|
|
|
)
|
|
|
|
|
|
) {
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
}
|
2010-01-24 12:14:03 +05:30
|
|
|
|
}
|
2010-01-31 21:04:37 +05:30
|
|
|
|
# endif
|
2010-01-24 12:14:03 +05:30
|
|
|
|
|
2010-01-31 21:04:37 +05:30
|
|
|
|
/* If we arrive here, ucs is not a combining or C0/C1 control character.
|
|
|
|
|
|
* Check whether it's 1 char or 2-shar wide.
|
|
|
|
|
|
*/
|
2010-01-24 12:14:03 +05:30
|
|
|
|
return 1 +
|
|
|
|
|
|
( (/*ucs >= 0x1100 &&*/ ucs <= 0x115f) /* Hangul Jamo init. consonants */
|
2010-01-29 13:41:47 +05:30
|
|
|
|
|| ucs == 0x2329 /* left-pointing angle bracket; also CJK punct. char */
|
|
|
|
|
|
|| ucs == 0x232a /* right-pointing angle bracket; also CJK punct. char */
|
2010-01-24 12:14:03 +05:30
|
|
|
|
|| (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs != 0x303f) /* CJK ... Yi */
|
2010-01-31 22:42:57 +05:30
|
|
|
|
# if LAST_SUPPORTED_WCHAR >= 0xac00
|
2010-01-24 12:14:03 +05:30
|
|
|
|
|| (ucs >= 0xac00 && ucs <= 0xd7a3) /* Hangul Syllables */
|
|
|
|
|
|
|| (ucs >= 0xf900 && ucs <= 0xfaff) /* CJK Compatibility Ideographs */
|
|
|
|
|
|
|| (ucs >= 0xfe10 && ucs <= 0xfe19) /* Vertical forms */
|
|
|
|
|
|
|| (ucs >= 0xfe30 && ucs <= 0xfe6f) /* CJK Compatibility Forms */
|
|
|
|
|
|
|| (ucs >= 0xff00 && ucs <= 0xff60) /* Fullwidth Forms */
|
|
|
|
|
|
|| (ucs >= 0xffe0 && ucs <= 0xffe6)
|
2010-01-31 20:34:30 +05:30
|
|
|
|
|| ((ucs >> 17) == (2 >> 1)) /* 20000..3ffff: Supplementary and Tertiary Ideographic Planes */
|
2010-01-31 22:42:57 +05:30
|
|
|
|
# endif
|
2010-01-24 12:14:03 +05:30
|
|
|
|
);
|
2010-01-29 13:41:47 +05:30
|
|
|
|
# endif
|
|
|
|
|
|
#endif
|
2010-01-24 12:14:03 +05:30
|
|
|
|
}
|
