1 ;; ORYA-OTF.flt -- Font Layout Table for Oriya OpenType font
2 ;; Copyright (C) 2004, 2007
3 ;; National Institute of Advanced Industrial Science and Technology (AIST)
4 ;; Registration Number H15PRO112
6 ;; This file is part of the m17n database; a sub-part of the m17n
9 ;; The m17n library is free software; you can redistribute it and/or
10 ;; modify it under the terms of the GNU Lesser General Public License
11 ;; as published by the Free Software Foundation; either version 2.1 of
12 ;; the License, or (at your option) any later version.
14 ;; The m17n library is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 ;; Lesser General Public License for more details.
19 ;; You should have received a copy of the GNU Lesser General Public
20 ;; License along with the m17n library; if not, write to the Free
21 ;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22 ;; Boston, MA 02110-1301, USA.
26 ;;; For Oriya OpenType fonts to draw the Oriya script. Tested with
27 ;;; utkalm.ttf <http://oriya.sarovar.org/download/utkalm.ttf.gz>
29 (font layouter orya-otf nil
30 (font (nil nil unicode-bmp :otf=orya=rphf)))
33 ;; C: consonant (except for R, B and Y)
35 ;; B: consonant (below)
36 ;; Y: consonant (post)
39 ;; m: vowel sign (pre)
40 ;; u: vowel sign (above)
41 ;; b: vowel sign (below)
42 ;; p: vowel sign (post)
43 ;; t: vowel sign (two-part)
44 ;; A: vowel modifier (above)
45 ;; a: vowel modifier (post)
46 ;; V: independent vowel
47 ;; N: ZWNJ (ZERO WIDTH NON-JOINER)
48 ;; J: ZWJ (ZERO WIDTH JOINER)
51 (0x0B00 0x0B7F ?X) ; generic
52 (0x0B00 ?Z) ; internal use
53 (0x0B01 0x0B03 ?a) ; SIGN CANDRABINDU .. VISARGA
54 (0x0B05 0x0B14 ?V) ; LETTER A .. VOCALIC AU
55 (0x0B15 0x0B39 ?C) ; LETTER KA .. HA
56 (0x0B24 ?B) ; LETTER TA
57 (0x0B28 ?B) ; LETTER NA
58 (0x0B2C 0x0B2E ?B) ; LETTER BA .. MA
59 (0x0B2F ?Y) ; LETTER YA
60 (0x0B30 ?R) ; LETTER RA
61 (0x0B32 0x0B33 ?B) ; LETTER LA
62 (0x0B33 ?B) ; LETTER LLA
63 (0x0B3C ?n) ; SIGN NUKTA
64 (0x0B3E ?p) ; VOWEL SIGN AA
65 (0x0B3F ?u) ; VOWEL SIGN I
66 (0x0B40 ?p) ; VOWEL SIGN II
67 (0x0B41 0x0B43 ?b) ; VOWEL SIGN U .. VOCALIC R
68 (0x0B47 ?m) ; VOWEL SIGN E
69 (0x0B48 0x0B4C ?t) ; VOWEL SIGN AI .. AU
70 (0x0B4D ?H) ; SIGN VIRAMA
71 (0x0B56 ?u) ; AI LENGTH MARK
72 (0x0B57 ?p) ; AU LENGTH MARK
73 (0x0B5C 0x0B5D ?C) ; LETTER RRA .. RHA
74 (0x0B5F ?Y) ; LETTER YYA
75 (0x0B60 0x0B61 ?V) ; LETTER VOCALIC RR .. LL
76 (0x0B71 ?C) ; LETTER WA
77 (0x0B64 0x0B65 ?X) ; DANDA .. DOUBLE DANDA
82 ;; Decompose two-part vowel signs.
83 ;; Move ZWJ before the consonant.
98 ;; Syllable identification and reordering.
99 ;; Do not apply 'rphf' if a syllable begins with ZWJ.
103 ;; A syllable with ZWJ and a pre-base vowel sign.
105 ("(J)(([CRBY]n?H)*[CRBY]n?)(m)(u)?(p)?(a)?"
106 < | (1 =) (4 =) (2 pre-below) (5 =) (2 post) (6 =) (7 =) | >)
108 ;; A syllable with ZWJ and a non-pre-base vowel sign.
110 ("(J)(([CRBY]n?H)*[CRBY]n?)(([bu])|(p))(a)?"
111 < | (1 =) (2 pre-below) (5 =) (2 post) (6 =) (7 =) | >)
113 ;; A syllable with ZWJ and a vowel modifier, but without vowel signs.
115 ("(J)(([CRBY]n?H)*[CRBY]n?)(a)"
116 < | (1 =) (2 pre-below) (2 post) (4 =) | >)
118 ;; Add a ZWNJ explicitly when a syllable ends with a halant.
120 ("(J)(([CRBY]n?H)*[CRBY]n?)(H)?(N)?"
121 < | (1 =) (2 pre-below) (4 = 0x200C) (2 post) | >)
123 ;; With a pre-base vowel sign, without a ZWJ.
125 ("(RH)?(([CRBY]n?H)*[CRBY]n?)(m)(u)?(p)?(a)?"
127 (4 =) (2 pre-below) (5 =) (1 otf:orya=rphf) (2 post) (6 =) (7 =)
130 ;; With a non-pre-base vowel sign, without a ZWJ.
132 ("(RH)?(([CRBY]n?H)*[CRBY]n?)(([bu])|(p))(a)?"
133 < | (2 pre-below) (5 =) (1 otf:orya=rphf) (2 post) (6 =) (7 =) | >)
135 ;; With a vowel modifier, without vowel signs and a ZWJ.
137 ("(RH)?(([CRBY]n?H)*[CRBY]n?)(a)"
138 < | (2 pre-below) (1 otf:orya=rphf) (2 post) (4 =) | >)
140 ;; Add a ZWNJ explicitly when a syllable ends with a halant.
142 ("(RH)?(([CRBY]n?H)*[CRBY]n?)(H)?(N)?"
143 < | (2 pre-below) (1 otf:orya=rphf) (4 = 0x200C) (2 post) | >)
145 ;; A syllable starting with an independent vowel.
152 ;; Move a halant after the base consonant to the end.
153 ;; Fill the resulting gap with a special mark.
154 ;; Remove post-base parts.
157 ("([CRBYnH]*[CYn])H([RBH]+)[YH]+$"
158 (1 = *) 0x0B00 (2 = *))
159 ("([CRBYnH]*[CYn])(H)([RBH]+)$"
160 (1 = *) 0x0B00 (3 = *) (2 =))
161 ("([CRBYnH]*[Cn])[YH]*$"
163 ("([RB]n?)H([RBH]*)[YH]+$"
164 (1 = *) 0x0B00 (2 = *))
165 ("([RB]n?)(H)([RBH]*)$"
166 (1 = *) 0x0B00 (3 = *) (2 =))
170 ;; Extract post-base parts and add a halant at the end.
171 ;; Produce nothing if there are no post-base parts.
174 ("[CRBYnH]*[CRBn]H([YH]+)$"
182 ;; Apply language forms to concerning segments.
186 ;; If a syllable contains a ZWNJ, render the preceding halant explicitly.
187 (" ([^Z]+)(Z)([^N]*)(HN)([^ ]*) "
188 | (1 otf:orya=nukt,akhn,half+) (2 =) (3 otf:orya=blwf+) (4 = =)
189 (5 otf:orya=pstf+) |)
191 (" (J?m?)([^Z]+)(Z)([^ ]*) "
192 | (1 = *) (2 otf:orya=nukt,akhn,half+) (3 =) (4 otf:orya=blwf,pstf+) |)
197 ;; Apply 'pres' to get pre-base conjuncts.
201 (" (J?m?)([^Z]+)(Z)([^ ]*) "
202 | (1 = *) (2 otf:orya=pres+) (3 =) (4 = *) |)
206 ;; When the number of glyphs between a pre-base vowel sign and the
207 ;; post-base mark is more than one, move the pre-base vowel sign
208 ;; before the base glyph.
212 (" (J)?(m)([^Z]+)([^Z])Z([^N ]*)N?([^ ]*) "
213 | (1 =) (3 = *) (2 =) (4 =) (5 = *) (6 = *)|)
214 (" ([^Z]+)Z([^N ]*)N?([^ ]*) "
215 | (1 = *) (2 = *) (3 = *) |)
219 ;; Apply other features.
220 ;; Do not apply 'vatu' and 'blws' if there is a ZWJ.
221 ;; The 'pres' feature is applied again for pre-base vowel sign.
226 (1 otf:orya=pres,abvs,pstp,haln))
228 (1 otf:orya=vatu,pres,abvs,blws,pstp,haln))