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| Current File : //usr/share/m17n/TAML-OTF.flt |
;; TAML-OTF.flt -- Font Layout Table for Tamil OpenType fonts
;; Copyright (C) 2004, 2006, 2007, 2010 AIST (H15PRO112)
;; See the end for copying conditions.
(font layouter taml-otf nil
(version "1.6.0")
(font (nil nil unicode-bmp :otf=taml)))
;;; <li> TAML-OTF.flt
;;;
;;; For Tamil OpenType fonts to draw the Tamil script.
(category
;; X: generic
;; a: ANUSVARA
;; V: independent vowel
;; C: consonant
;; H: HALANT
;; m: vowel sign (pre)
;; p: vowel sign (others)
(0x0B80 0x0BFF ?X) ; generic
(0x0B82 ?a) ; SIGN ANUSVARA
(0x0B85 0x0B94 ?V) ; LETTER A .. AU
(0x0B95 0x0BB9 ?C) ; LETTER KA .. HA
(0x0BBE 0x0BC2 ?p) ; VOWEL SIGN AA .. I
(0x0BC6 0x0BC8 ?m) ; VOWEL SIGN E .. AI
(0x0BCD ?H) ; SIGN VIRAMA
(0x0BD7 ?p) ; AU LENGTH MARK
(0x200C ?N) ; ZWNJ
(0x200D ?J) ; ZWJ
(0x25CC ?X) ; DOTTED CIRCLE
)
;; Stage 0
;; Preprocessing
(generator
(0
(cond
;; Decompose two-part vowel signs.
((0x0BCA)
0x0BC6 0x0BBE)
((0x0BCB)
0x0BC7 0x0BBE)
((0x0BCC)
0x0BC6 0x0BD7)
;; A variation of AU.
((0x0B92 0x0BD7)
0x0B94)
;; The SHRII ligature and its old definition
((0x0BB6 0x0BCD 0x0BB0 0x0BC0)
(0 :otf=taml=akhn,half,pres,abvs,blws,psts,haln+))
((0x0BB8 0x0BCD 0x0BB0 0x0BC0)
(0 :otf=taml=akhn,half,pres,abvs,blws,psts,haln+))
("." =))
*))
;; Stage 1
;; Syllable identification
(generator
(0
(cond
;; Consonant-based syllables
;;1 23 4
("(C((J?H|HJ?)C)*)(H[NJ]?|m?p?a?)"
< |
(cond
(".+HJ$" :otf=taml=nukt,akhn+)
("(.+)(H)N?$" (1 :otf=taml=nukt,akhn+) (2 =) 0x200C)
(".+" :otf=taml=nukt,akhn+))
| >)
;; Syllables with an independent vowel
("Vm?p?a?"
< | = * | >)
;; Two-part vowel signs
((0x0BC6 0x0BBE)
(cond
((font-facility 0x25CC) < = 0x25CC = >)
(".+" [ 0x0BCA ])))
((0x0BC7 0x0BBE)
(cond
((font-facility 0x25CC) < = 0x25CC = >)
(".+" [ 0x0BCB ])))
((0x0BC6 0x0BD7)
(cond
((font-facility 0x25CC) < = 0x25CC = >)
(".+" [ 0x0BCC ])))
;; Combining marks are displayed with a DOTTED CIRCLE.
("m"
(cond
((font-facility 0x25CC) < = 0x25CC >)
("." [ = ])))
("[Hpa]"
(cond
((font-facility 0x25CC) < 0x25CC = >)
("." [ = ])))
("." =))
*))
;; Stage 2
;; Move pre-base matra after the last halant, or to the beginning
(generator
(0
(cond
;; 1 2 3 4
(" ([^ ]+HJ?)([^H ]+)(m)([^ ]*) "
| (1 = *) (3 =) (2 = *) (4 = *) |)
;; 1 2 3
(" ([^ ]+)(m)([^ ]*) "
| (2 =) (1 = *) (3 = *) |)
("." =))
*))
;; Stage 3
;; Presentation forms
(generator
(0
(cond
(" ([^ ]+) "
| (1 :otf=taml=pres,abvs,blws,psts,haln+) |)
("." =))
*))
;; Stage 4
;; Remove ZWNJ/ZWJ
(generator
(0
(cond
("[NJ]")
("." =))
*))
;; Stage 5
;; GPOS processing
(generator
(0
(cond
(" ([^ ]+) "
(1 :otf=taml=+abvm,blwm,dist))
("." =))
*))
;; Copyright (C) 2004, 2006, 2007, 2010
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H15PRO112
;; This file is part of the m17n database; a sub-part of the m17n
;; library.
;; The m17n library is free software; you can redistribute it and/or
;; modify it under the terms of the GNU Lesser General Public License
;; as published by the Free Software Foundation; either version 2.1 of
;; the License, or (at your option) any later version.
;; The m17n library is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; Lesser General Public License for more details.
;; You should have received a copy of the GNU Lesser General Public
;; License along with the m17n library; if not, write to the Free
;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;; Local Variables:
;; mode: emacs-lisp
;; End: