thai/wtt.h(3) libthai thai/wtt.h(3)
NAME
thai/wtt.h -
WTT I/O implementation.
SYNOPSIS
Enumerations
enum WTTClass { CTRL = 0, NON = 1, CONS = 2, LV = 3, FV1 = 4, FV2 = 5, FV3 = 6, BV1 = 7, BV2 = 8, BD = 9, TONE = 10, AD1 = 11, AD2 = 12,
AD3 = 13, AV1 = 14, AV2 = 15, AV3 = 16 }
Classification of characters in TIS620 according to WTT.
enum WTTOp { CP = 1, XC = 2, AC = 3, RJ = 4, SR = 5 }
Composibility checking tables.
Functions
WTTClass TACchtype (thchar_t c)
WTT character class.
WTTOp TACio_op (thchar_t c1, thchar_t c2)
WTT I/O operation.
Detailed Description
WTT I/O implementation.
WTT stands for Wing Tuk Tee (in Thai, Runs everywhere). It was defined by TACTIS (Thai API Consortium/Thai Industrial Standard) in the
NECTEC Thai Software Standard Project (1989-1991), and later endorsed by Thai Industrial Standard Institute (TISI) as TIS 1566-2541 in
1998.
WTT classifies Thai chracter(TIS-620) into 17 types below.
ITYPE VALUE SHORT_DESCRIPTION
CTRL 0 control characters
NON 1 non composible characters
CONS 2 consonants
LV 3 leading vowels
FV1 4 following vowels 1
FV2 5 following vowels 2
FV3 6 following vowels 3
BV1 7 below vowels 1
BV2 8 below vowels 2
BD 9 below diacritics
TONE 10 tonemarks
AD1 11 above diacritics 1
AD2 12 above diacritics 2
AD3 13 above diacritics 3
AV1 14 above vowels 1
AV2 15 above vowels 2
AV3 16 above vowels 3
Functions in thctype.h do basic character classifications while wtt.h classifies a chracter in detail. Please refer to the reference.
TACio_op() checks how to compose two given chracters. The possiblities are Composible (CP), Non-display (XC), Accept (AC), Reject (RJ) and
Strict Reject (SR). The values of CP, XC, AC, RJ and SR are difined in wtt.h. And their meanings are:
o CP : second character is displayed in the same cell as the first, also implies an acceptance.
o XC : Do nothing.
o AC : Display second character in the next cell.
o RJ : Discard second character.
o SR : Reject second character only in strict mode.
Enumeration Type Documentation
enum WTTClass
Classification of characters in TIS620 according to WTT.
Enumerator
CTRL control chars
NON non composibles
CONS consonants
LV leading vowels
FV1 following vowels 1
FV2 following vowels 2
FV3 following vowels 3
BV1 below vowels 1
BV2 below vowels 2
BD below diacritics
TONE tonemarks
AD1 above diacritics 1
AD2 above diacritics 2
AD3 above diacritics 3
AV1 above vowels 1
AV2 above vowels 2
AV3 above vowels 3
enum WTTOp
Composibility checking tables.
Enumerator
CP COMPOSIBLE - following char is displayed in the same cell as leading char, also implies ACCEPT
XC Non-display
AC ACCEPT - display the following char in the next cell
RJ REJECT - discard that following char, ignore it
SR STRICT REJECT - REJECT only if in strict mode
Function Documentation
WTTClass TACchtype (thchar_tc)
WTT character class.
Parameters:
c : the character
Returns:
WTT character class { CTRL, ..., AV3 }
WTTOp TACio_op (thchar_tc1, thchar_tc2)
WTT I/O operation.
Parameters:
c1 : previous character
c2 : next character
Returns:
WTT I/O operation { CP, XC, AC, RJ, SR }
Author
Generated automatically by Doxygen for libthai from the source code.
Version 0.1.14 Tue Jun 17 2014 thai/wtt.h(3)