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Common Desktop Environment: Internationalization Programmer's Guide

ISO EUC Code Sets

The following code sets are based on definitions set by the International Organization for Standardization (ISO).

ISO646-IRV

The ISO646-IRV code set defines the code set used for information processing based on a 7-bit encoding. The character set associated with this code set is derived from the ASCII characters.

ISO8859-1

ISO8859-1 encoding is a single-byte encoding that is based on and is compatible with other ISO, American National Standards Institute (ANSI), and European Computer Manufacturer's Association (ECMA) code extension techniques. The ISO8859 encoding defines a family of code sets with each member containing its own unique character sets. The 7-bit ASCII code set is a proper subset of each of the code sets in the ISO8859 family.

The ISO8859-1 code set is called the ISO Latin-1 code set and consists of two character sets:

These character sets combined include the characters necessary for Western European languages such as Danish, Dutch, English, Finnish, French, German, Icelandic, Italian, Norwegian, Portuguese, Spanish, and Swedish.

While the ASCII code set defines an order for the English alphabet, the Graphic Right (GR) characters are not ordered according to any specific language. The language-specific ordering is defined by the locale.

Other ISO8859 Code Sets

This section lists the other significant ISO8859 code sets. Each code set includes the ASCII character set plus its own unique characters.

ISO8859-2

Latin alphabet, No. 2, Eastern Europe

ISO8859-5

Latin/Cyrillic alphabet

ISO8859-6

Latin/Arabic alphabet

ISO8859-7

Latin/Greek alphabet

ISO8859-8

Latin/Hebrew alphabet

ISO8859-9

Latin/Turkish alphabet

eucJP

The EUC for Japanese consists of single-byte and multibyte characters (2 and 3 bytes). The encoding conforms to ISO2022 and is based on JIS and EUC definitions, see Table 3-2.

Table 3-2 Encoding for eucJP

CS 

Encoding 

 

Character Set 

cs0 

0xxxxxxx 

 

ASCII 

cs1 

1xxxxxxx 

1xxxxxxx 

JIS X0208-1990 

cs2 

0x8E 

1xxxxxxx 

JIS X0201-1976 

cs3 

0x8F 

1xxxxxxx 1xxxxxxx 

JIS X0212-1990 

JIS X0208-1990

A code of the Japanese graphic character set for information interchange (1990 version) that contains 147 special characters, 10 numeric digits, 83 Hiragana characters, 86 Katakana characters, 52 Latin characters, 48 Greek characters, 66 Cyrillic characters, 32 line-drawing elements, and 6355 Kanji characters.

JIS X0201

A code for information interchange that contains 63 Katakana characters.

JIS X0212-1990

A code of the supplementary Japanese graphic character set for information interchange (1990 version) that contains 21 additional special characters, 21 additional Greek characters, 26 additional Cyrillic characters, 27 additional Latin characters, 171 Latin characters with diacritical marks, and 5801 additional Kanji characters.

eucTW

The EUC for Traditional Chinese is an encoding consisting of characters that contain single-byte and multibyte (2 and 4 bytes) characters. The EUC encoding conforms to ISO2022 and is based on the Chinese National Standard (CNS) as defined by Taiwan and the EUC definition, see Table 3-3.

Table 3-3 Encoding for eucTW

CS 

Encoding 

 

 

Character Set 

cs0 

0xxxxxxx 

 

 

ASCII 

cs1 

1xxxxxxx 

1xxxxxxx 

 

CNS 11643.1992 - plane 1 

cs2 

0x8EA2 

1xxxxxxx 

1xxxxxxx 

CNS 11643.1992 - plane 2 

cs3 

0x8EA3 

1xxxxxxx 

1xxxxxxx 

CNS 11643.1992 - plane 3 

 

0x8EB0 

1xxxxxxx 

1xxxxxxx 

CNS 11643.1992 - Plane 16 

CNS 11643-1992 defines 16 planes for the Chinese Standard Interchange Code, each plane can support up to 8836 characters (94x94). Currently, only planes 1 through 7 have characters assigned. Table 3-4 shows the 16 planes of the CNS 11643-1992 standard.

Table 3-4 16 Planes of the CNS 11643-1992 Standard

Plane 

Definition 

# of Character 

EUC Encoding 

1 

Most frequently used 

6085 

A1A1-FDCB 

2 

Secondary frequently 

7650 

8EA2 A1A1 - 8EA2 F2C4 

3 

Exec.Yuen EDP 1 center

6148 

8EA3 A1A1 - 8EA3 E2C6 

4 

RIS2, Vendor defined

7298 

8EA4 A1A1 - 8EA4 EEDC 

5 

Rarely used by MOE3

8603 

8EA5 A1A1 - 8EA5 FCD1 

6 

Variation char set 1 by MOE 

6388 

8EA6 A1A1 - 8EA6 E4FA 

7 

Variation char set 2 by MOE 

6539 

8EA7 A1A1 - 8EA7 E6D5 

8 

Undefined 

0 

8EA8 A1A1 - 8EA8 FEFE 

9 

Undefined 

0 

8EA9 A1A1 - 8EA9 FEFE 

10 

Undefined 

0 

8EAA A1A1 - 8EAA FEFE 

11 

Undefined 

0 

8EAB A1A1 - 8EAB FEFE 

12 

User Defined Character (UDC) 

0 

8EAC A1A1 - 8EAC FEFE 

13 

UDC 

0 

8EAD A1A1 - 9EAD FEFE 

14 

UDC 

0 

8EAE A1A1 - 8EAE FEFE 

15 

UDC 

0 

8EAF A1A1 - 8EAF FEFE 

16 

UDC 

0 

8EB0 A1A1 - 8EB0 FEFE 

1. EDP: Center of Directorate, General of Budget, Accounting, and Statistics

2. RIS: Residence Information System

3. MOE: Ministry of Education

eucKR

The EUC for Korean is an encoding consisting of single-byte and multibyte characters (shown in Table 3-5). The encoding conforms to ISO2022 and is based on Korean Standard Code (KSC) set and EUC definitions.

Table 3-5 Encoding for eucKR.

CS 

Encoding 

 

Character Set 

cs0 

0xxxxxxx 

 

ASCII 

cs1 

1xxxxxxx 

1xxxxxxx 

KS C 5601-1992 

cs2 

 

 

Not used 

cs3 

 

 

Not used 

KSC 5601-1992 (code of the Korean character set for information interchange, 1992 version) contains 432 special characters, 30 Arabic and Roman numeral characters, 94 Hangul alphabet characters, 52 Roman characters, 48 Greek characters, 27 Latin characters, 169 Japanese characters, 66 Russian characters, 68 line-drawing elements, 2344 precomposed Hangul characters, and 4888 Hanja characters.

One Hangul character can be comprised of several consonants and vowels. Most Hangul words can be expressed in Hanja words. Hanja is a set of Traditional Chinese characters, which is currently used by Korean people. Each Hanja character has its own meaning and is thus more specific than Hangul most of the time.