1#
2# Copyright (C) 2002-2010, International Business Machines Corporation 
3# and others. All Rights Reserved.
4#
5# file:  word_ja.txt
6#
7# ICU Word Break Rules
8#      See Unicode Standard Annex #29.
9#      These rules are based on UAX-29 Revision 16 for Unicode 6.0
10#
11# Note:  Updates to word.txt will usually need to be merged into
12#        word_POSIX.txt and word_ja.txt also.
13
14##############################################################################
15#
16#  Character class definitions from TR 29
17#
18##############################################################################
19
20!!chain;
21
22
23#
24#  Character Class Definitions.
25#
26
27$CR           = [\p{Word_Break = CR}];
28$LF           = [\p{Word_Break = LF}];
29$Newline      = [\p{Word_Break = Newline}];
30$Extend       = [\p{Word_Break = Extend}];
31$Format       = [\p{Word_Break = Format}];
32$Katakana     = [\p{Word_Break = Katakana}];
33$ALetter      = [\p{Word_Break = ALetter}];
34$MidNumLet    = [\p{Word_Break = MidNumLet}];
35$MidLetter    = [\p{Word_Break = MidLetter}];
36$MidNum       = [\p{Word_Break = MidNum}];
37$Numeric      = [\p{Word_Break = Numeric}];
38$ExtendNumLet = [\p{Word_Break = ExtendNumLet}];
39
40
41#   Dictionary character set, for triggering language-based break engines. Currently
42#   limited to LineBreak=Complex_Context. Note that this set only works in Unicode
43#   5.0 or later as the definition of Complex_Context was corrected to include all
44#   characters requiring dictionary break.
45
46$dictionary   = [:LineBreak = Complex_Context:];
47$Control        = [\p{Grapheme_Cluster_Break = Control}]; 
48$ALetterPlus  = [$ALetter [$dictionary-$Extend-$Control]];   # Note:  default ALetter does not
49                                                             #  include the dictionary characters.
50
51#
52#  Rules 4    Ignore Format and Extend characters, 
53#             except when they appear at the beginning of a region of text.
54#
55$KatakanaEx     = $Katakana     ($Extend |  $Format)*;
56$ALetterEx      = $ALetterPlus  ($Extend |  $Format)*;
57$MidNumLetEx    = $MidNumLet    ($Extend |  $Format)*;
58$MidLetterEx    = $MidLetter    ($Extend |  $Format)*;
59$MidNumEx       = $MidNum       ($Extend |  $Format)*;
60$NumericEx      = $Numeric      ($Extend |  $Format)*;
61$ExtendNumLetEx = $ExtendNumLet ($Extend |  $Format)*;
62
63$Hiragana       = [\p{script=Hiragana}];
64$Ideographic    = [\p{Ideographic} [\u3005 \u3007 \u303B]];
65$HiraganaEx     = $Hiragana     ($Extend |  $Format)*;
66$IdeographicEx  = $Ideographic  ($Extend |  $Format)*;
67
68## -------------------------------------------------
69
70!!forward;
71
72
73# Rule 3 - CR x LF
74#
75$CR $LF;
76
77# Rule 4 - ignore Format and Extend characters, except when they appear at the beginning
78#          of a region of Text.   The rule here comes into play when the start of text
79#          begins with a group of Format chars, or with a "word" consisting of a single
80#          char that is not in any of the listed word break categories followed by
81#          format char(s).
82[^$CR $LF $Newline]? ($Extend |  $Format)+;
83
84$NumericEx {100};
85$ALetterEx {200};
86$KatakanaEx {300};       # note:  these status values override those from rule 5
87$HiraganaEx {300};       #        by virtual of being numerically larger.
88$IdeographicEx {400};    #
89
90#
91# rule 5
92#    Do not break between most letters.
93#
94$ALetterEx $ALetterEx {200};
95
96# rule 6 and 7
97$ALetterEx ($MidLetterEx | $MidNumLetEx) $ALetterEx {200};
98
99# rule 8
100
101$NumericEx $NumericEx {100};
102
103# rule 9
104
105$ALetterEx $NumericEx {200};
106
107# rule 10
108
109$NumericEx $ALetterEx {200};
110
111# rule 11 and 12 
112
113$NumericEx ($MidNumEx | $MidNumLetEx) $NumericEx {100};
114
115# rule 13
116
117$KatakanaEx  $KatakanaEx {300};
118$HiraganaEx    $HiraganaEx {300};
119$IdeographicEx $IdeographicEx {400};
120
121
122# rule 13a/b
123
124$ALetterEx      $ExtendNumLetEx {200};    #  (13a)
125$NumericEx      $ExtendNumLetEx {100};    #  (13a)
126$KatakanaEx     $ExtendNumLetEx {300};    #  (13a)
127$ExtendNumLetEx $ExtendNumLetEx {200};    #  (13a)
128
129$ExtendNumLetEx $ALetterEx  {200};    #  (13b)
130$ExtendNumLetEx $NumericEx  {100};    #  (13b)
131$ExtendNumLetEx $KatakanaEx {300};    #  (13b)
132 
133
134
135## -------------------------------------------------
136
137!!reverse;
138
139$BackALetterEx     = ($Format | $Extend)* $ALetterPlus;
140$BackMidNumLetEx   = ($Format | $Extend)* $MidNumLet;
141$BackNumericEx     = ($Format | $Extend)* $Numeric;
142$BackMidNumEx      = ($Format | $Extend)* $MidNum;
143$BackMidLetterEx   = ($Format | $Extend)* $MidLetter;
144$BackKatakanaEx    = ($Format | $Extend)* $Katakana;
145$BackHiraganaEx    = ($Format | $Extend)* $Hiragana;
146$BackIdeographicEx = ($Format | $Extend)* $Ideographic;
147$BackExtendNumLetEx= ($Format | $Extend)* $ExtendNumLet;
148
149# rule 3
150$LF $CR;
151
152# rule 4
153($Format | $Extend)*  [^$CR $LF $Newline]?;
154
155# rule 5
156
157$BackALetterEx $BackALetterEx;
158
159# rule 6 and 7
160
161$BackALetterEx ($BackMidLetterEx | $BackMidNumLetEx) $BackALetterEx;
162
163
164# rule 8
165
166$BackNumericEx $BackNumericEx;
167
168# rule 9
169
170$BackNumericEx $BackALetterEx;
171
172# rule 10
173
174$BackALetterEx $BackNumericEx;
175
176# rule 11 and 12
177
178$BackNumericEx ($BackMidNumEx | $BackMidNumLetEx) $BackNumericEx;
179
180# rule 13
181
182$BackKatakanaEx $BackKatakanaEx;
183$BackHiraganaEx $BackHiraganaEx;
184$BackIdeographicEx $BackIdeographicEx;
185
186
187
188# rules 13 a/b
189#
190$BackExtendNumLetEx ($BackALetterEx | $BackNumericEx | $BackKatakanaEx | $BackExtendNumLetEx);
191($BackALetterEx | $BackNumericEx | $BackKatakanaEx) $BackExtendNumLetEx; 
192
193## -------------------------------------------------
194
195!!safe_reverse;
196
197# rule 3
198($Extend | $Format)+ .?;
199
200# rule 6
201($MidLetter | $MidNumLet) $BackALetterEx;
202
203# rule 11
204($MidNum | $MidNumLet) $BackNumericEx;
205
206# For dictionary-based break
207$dictionary $dictionary;
208
209## -------------------------------------------------
210
211!!safe_forward;
212
213# rule 4
214($Extend | $Format)+ .?;
215
216# rule 6
217($MidLetterEx | $MidNumLetEx) $ALetterEx;
218
219# rule 11
220($MidNumEx | $MidNumLetEx) $NumericEx;
221
222# For dictionary-based break
223$dictionary $dictionary;
224