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authormuraken <muraken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-03-09 09:15:42 +0000
committermuraken <muraken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2010-03-09 09:15:42 +0000
commit62f8df2d3c95816028c006ecbe70bc51704eec4b (patch)
tree2eb080aa7b5d235cf934014ebbafa17c3f598718 /tool/jisx0208.rb
parentc4636043cc2afe5a5fec48850115e8aa0aa3c2de (diff)
* enc/trans/EMOJI/*.src, enc/trans/emoji*, enc/x-emoji.c, test/ruby/enc/test_emoji.rb, tool/enc-emoji-citrus-gen.rb, tool/enc-emoji4unicode.rb, tool/jisx0208.rb, tool/test/test_jisx0208.rb: new encodings to support emoji charsets, which are used by Japanese mobile phones [ruby-dev:40528]. Thanks Yoji Shidara for a lot of contribution.
* tool/transcode-tblgen.rb: modified for enc-emoji4unicode.rb. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26856 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'tool/jisx0208.rb')
-rw-r--r--tool/jisx0208.rb84
1 files changed, 84 insertions, 0 deletions
diff --git a/tool/jisx0208.rb b/tool/jisx0208.rb
new file mode 100644
index 0000000..921f574
--- /dev/null
+++ b/tool/jisx0208.rb
@@ -0,0 +1,84 @@
+module JISX0208
+ class Char
+ class << self
+ def from_sjis(sjis)
+ unless 0x8140 <= sjis && sjis <= 0xFCFC
+ raise ArgumentError, "out of the range of JIS X 0208: 0x#{sjis.to_s(16)}"
+ end
+ sjis_hi, sjis_lo = sjis >> 8, sjis & 0xFF
+ sjis_hi = (sjis_hi - ((sjis_hi <= 0x9F) ? 0x80 : 0xC0)) << 1
+ if sjis_lo <= 0x9E
+ sjis_hi -= 1
+ sjis_lo -= (sjis_lo <= 0x7E) ? 0x3F : 0x40
+ else
+ sjis_lo -= 0x9E
+ end
+ return self.new(sjis_hi, sjis_lo)
+ end
+ end
+
+ def initialize(row, cell=nil)
+ if cell
+ @code = row_cell_to_code(row, cell)
+ else
+ @code = row.to_int
+ end
+ end
+
+ def ==(other)
+ if self.class === other
+ return Integer(self) == Integer(other)
+ end
+ return super(other)
+ end
+
+ def to_int
+ return @code
+ end
+
+ def hi
+ Integer(self) >> 8
+ end
+
+ def lo
+ Integer(self) & 0xFF
+ end
+
+ def row
+ self.hi - 0x20
+ end
+
+ def cell
+ self.lo - 0x20
+ end
+
+ def succ
+ succ_hi, succ_lo = self.hi, self.lo + 1
+ if succ_lo > 0x7E
+ succ_lo = 0x21
+ succ_hi += 1
+ end
+ return self.class.new(succ_hi << 8 | succ_lo)
+ end
+
+ def to_sjis
+ h, l = self.hi, self.lo
+ h = (h + 1) / 2 + ((0x21..0x5E).include?(h) ? 0x70 : 0xB0)
+ l += self.hi.odd? ? 0x1F + ((l >= 0x60) ? 1 : 0) : 0x7E
+ return h << 8 | l
+ end
+
+ def inspect
+ "#<JISX0208::Char:#{self.object_id.to_s(16)} sjis=#{self.to_sjis.to_s(16)} jis=#{self.to_int.to_s(16)}>"
+ end
+
+ private
+
+ def row_cell_to_code(row, cell)
+ unless 0 < row && (1..94).include?(cell)
+ raise ArgumentError, "out of row-cell range: #{row}-#{cell}"
+ end
+ return (row + 0x20) << 8 | (cell + 0x20)
+ end
+ end
+end