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Contents
# encoding: UTF-8
# Copyright 2012 Twitter, Inc
# http://www.apache.org/licenses/LICENSE-2.0
module TwitterCldr
module Normalization
module Hangul
class << self
# Special composition for Hangul syllables. Documented in Section 3.12 at
# http://www.unicode.org/versions/Unicode6.1.0/ch03.pdf
#
def compose(code_points)
l = code_points.first - LBASE
v = code_points[1] - VBASE
t = code_points[2] ? code_points[2] - TBASE : 0 # T part may be missing, that's ok
SBASE + l * NCOUNT + v * TCOUNT + t
end
# Special decomposition for Hangul syllables. Documented in Section 3.12 at http://www.unicode.org/versions/Unicode6.1.0/ch03.pdf
# Also see http://source.icu-project.org/repos/icu/icuhtml/trunk/design/collation/ICU_collation_design.htm#Hangul_Implicit_CEs
#
def decompose(code_point)
l = code_point - SBASE
t = l % TCOUNT
l /= TCOUNT
v = l % VCOUNT
l /= VCOUNT
result = []
result << LBASE + l
result << VBASE + v
result << TBASE + t if t > 0
result
end
def hangul_syllable?(code_point)
(SBASE...SLIMIT).include?(code_point)
end
SBASE = 0xAC00
LBASE = 0x1100
VBASE = 0x1161
TBASE = 0x11A7
LCOUNT = 19
VCOUNT = 21
TCOUNT = 28
NCOUNT = VCOUNT * TCOUNT # 588
SCOUNT = LCOUNT * NCOUNT # 11172
LLIMIT = LBASE + LCOUNT # 0x1113 = 4371
VLIMIT = VBASE + VCOUNT # 0x1176 = 4470
TLIMIT = TBASE + TCOUNT # 0x11C3 = 4547
SLIMIT = SBASE + SCOUNT # 0xD7A4 = 55204
end
end
end
end
Version data entries
19 entries across 19 versions & 1 rubygems