#include <wchar.h>
wctype_t wctype(const char *charclass);
wctype() builds values in wctype_t data type according to the specification with the charclass argument to determine wide character classes. iswctype() is used for actual determination. wctype() returns arguments that wctype() needs to use.
The following character class names are defined in every locale.
alnum alpha blank cntrl digit graph lower print punct space upper xdigit
In addition to the above, the Japanese locale (ja, ja_JP.eucJP, ja_JP.PCK and ja_JP.UTF-8) defines the following character classes specific to the Japanese locale.
jkanji jkata hira jdigit jparen line jisx0201r jisx0208 jisx0212 udc vdc
The following character classes are supported in ja and ja_JP.eucJP locales only.
jalpha jspecial jgreek jrussian junit jsci jgen jpunct
The following character classes are supported in ja_JP.eucJP and ja_JP.UTF-8 locale only.
ascii paren jisx0201 gaiji jhankana jspace
These can be also used as charclass arguments to wctype(). However, the use of these classes are limited to applications for the Japanese locale only.
upper Character class that represents any uppercase letter
JIS X 0201 Roman character graphic set Alphabet uppercase letters (C/1-D/10)
JIS X 0208 Roman character uppercase letters (3/33-3/58)
Greek character uppercase letters (6/1-24)
Russian character uppercase letters (7/1-33)
JIS X 0212 Greek alphabet uppercase letters with diacritical marks (6/65-69, 71, 73, 74, 76)
Cyrillic alphabet uppercase letters (7/34-46)
Latin alphabet uppercase letters (9/1, 2, 4, 6, 8, 9, 11, 12, 13, 15, 16)
Latin alphabet uppercase letters with diacritical marks (10/01-24, 26-87)
lower Character class that represents any lowercase letter
JIS X 0201 Roman character graphic set Alphabet lowercase letters (E/1-F/10)
JIS X 0208 Roman character lowercase letters (3/65-90)
Greek character lowercase letters (6/33-56)
Russian character lowercase letters (7/49-81)
JIS X 0212 Greek alphabet lowercase letters with diacritical marks (6/81-92)
Cyrillic alphabet lowercase letters (7/82-94)
Latin alphabet lowercase letters (9/33-48)
Latin alphabet lowercase letters with diacritical marks (11/1-27, 29-35, 37-87)
digit Class that determines the numbers 0 to 10 for decimal representation.
JIS X 0201 Roman character graphic set Numbers (B/0-9)
space Class that determines a space.
JIS X 0201 Control character set Space (A/9-13)
Space characters
JIS X 0208 Space (1/1)
punct Class that determines symbols and special characters.
JIS X 0201 Roman character graphic set A/1-15, B/10-C/0, D/11-E/0, F/11-14
cntrl Class that determines control characters.
JIS X 0201 Control character set All characters
Kill characters
C1 control characters All characters
blank Class that determines field delimiters.
JIS X 0201 Control character set A/9
Space characters
JIS X 0208 Space (1/1)
xdigit Class that determines alphanumerics used for hexadecimal representation.
JIS X 0201 Roman character graphic set Numbers (B/0-9)
A-F, a-f (C/1-6, E/1-6)
alpha Class that determines alphabets.
upper class and lower class letters
print Class that determines printable characters.
JIS X 0201 Roman character graphic set Space characters
JIS X 0201 Katakana character graphic set All the characters except in character undefined areas
JIS X 0208 All the characters except in character undefined areas
JIS X 0212 All the characters except in character undefined areas
Vendor-defined character areas All the characters except in character undefined areas in Class vdc.
User-defined character areas All the characters including character undefined areas in Class udc.
graph Class that determines graphic characters.
All the characters in Class print except those in Class space.
jkanji Class that determines Kanji (symbol or ideographic characters used for Kanji representation).
JIS X 0208 Character defined areas from Ku 16 to Ku 84.
JIS X 0212 Character defined areas from Ku 16 to Ku 77.
jkata Class that determines Katakana.
JIS X 0208 5/1-86, 1/11, 12, 19, 20
jhira Class that determines Hiragana.
JIS X 0208 4/1-83, 1/11, 12, 21, 22, 26
jdigit Class that determines numbers except in digit.
JIS X 0208 3/16-25
jparen Class that determines characters such as parentheses.
JIS X 0208 1/38-59
line Class that determines ruled line primitives.
JIS X 0208 8/1-32
jisx0201r Class that determines characters included in JIS X 0201 Katakana character graphic set.
JIS X 0201 Katakana character graphic set All the characters from A/1 to D/15.
jisx0208 Class that determines characters included in JIS X 0208.
All the characters including those in JIS X 0208 character undefined areas: From Ku 1 to Ku 84 (Ku 13 Vendor-defined character area is included).
jisx0212 Class that determine characters included in JIS X 0212.
All the characters including those in JIS X 0212 character undefined areas: From Ku 1 to Ku 84 (Ku 83 and 84 Vendor-defined character areas are also included). No characters in ja_JP.PCK locale are included in this class.
udc Class that determines user-defined characters.
All the characters including those in character undefined areas in the user-defined character area.
ja locale
User-defined characters (Ku 1-20) 0xf5a1-0xfefe
0x8ff5a1-0x8ffefe
ja_JP.PCK locale
User-defined characters (Ku 1-20) 0xf040-0xf9fc
ja_JP.UTF-8 locale
User-defined characters (6400 characters) 0xe000-0xf8ff
vdc Class that determines vendor-defined characters.
All the characters including those in character undefined areas in the vendor-defined character area.
ja and ja_JP.eucJP locale JIS X 0208 Ku 13: Special symbols
JIS X 0212 Ku 83 - 84
IBM Extended characters not included in JIS X 0212.
ja_JP.PCK locale JIS X 0208 Ku 13: Special symbols
NEC-selective IBM Extended characters 0xed40-0xeffc
IBM Extended characters: 0xfa40-0xfcfc
ja_JP.UTF-8 locale Not defined
jalpha Class that determines alphabet letters.
JIS X 0208 3/33-58, 3/65-90
jspecial Class that determines special symbol characters.
JIS X 0208 1/2-94, 2/1-14, 2/26-33, 2/42-48, 2/60-74, 2/82-89, 94
JIS X 0212 2/15-25, 2/34-36, 2/75-81
JIS X 0208 Ku 13: Special symbols IBM Extended characters
Special characters defined by NEC-selective IBM Extended characters
jgreek Class that determines Greek characters.
JIS X 0208 6/1-24, 6/33-56
jrussian Class that determines Russian characters.
JIS X 0208 7/1-7/33, 7/49-81
junit Class that determines unit symbols.
JIS X 0208 1/75-83, 2/82, 83
JIS X 0212 2/80
jsci Class that detemines scientific symbols.
JIS X 0208 1/60-74, 2/26-33, 2/42-48, 2/60-74
jgen Class that determines general symbols.
JIS X 0208 1/84-94, 2/1-14, 2/84-89, 94
JIS X 0212 2/35, 75, 2/79-81
jpunct Class that determines punctuation symbols.
JIS X 0208 1/2-37
JIS X 0212 2/34, 36
ascii Class that determines JIS X 0201 Functional character set, Space characters, Roman character graphic set, and Kill characters.
paren Class that determines characters such as parentheses.
jisx0201 Class that determines characters included in JIS X 0212.
gaiji Class that determines implementer defined characters. udc and vdc classes are included.
jhankana Class that determines characters used for Japanese representation included in JIS X 0212.
jspace Class that determines space characters included in JIS X 0208 and JIS X 0212.
XX/YY in JIS X 0201 Functional character set, Roman character graphic set, and Katakana character graphic set denotes Column XX and Row YY. XX/YY in JIS X 0208 and JIS X 0212 denotes Ku XX and Point YY.
In case of JIS X 0212 characters, this rule only applies to ja or ja_JP.UTF-8 locale.
The following example shows how to determine if the wide character wc is included in Class udc.
iswctype(3C), wctype(3C), wctrans_ja(3C), jctype(3x), eucJP(5), PCK(5)