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- ;; TAML-OTF.flt -- Font Layout Table for Tamil OpenType fonts
- ;; Copyright (C) 2004, 2006, 2007 AIST (H15PRO112)
- ;; See the end for copying conditions.
-
- (font layouter taml-otf nil
- (font (nil nil unicode-bmp :otf=taml=akhn)))
-
- ;;; <li> TAML-OTF.flt
- ;;;
- ;;; For Tamil OpenType fonts to draw the Tamil script.
-
- (category
- ;; C: consonant
- ;; H: HALANT
- ;; m: vowel sign (pre)
- ;; u: vowel sign (above)
- ;; b: vowel sign (below)
- ;; p: vowel sign (post)
- ;; X: generic
- (0x0B80 0x0BFF ?X) ; generic
- (0x0B95 0x0BB9 ?C) ; LETTER KA .. HA
- (0x0BBE 0x0BBF ?p) ; VOWEL SIGN AA .. I
- (0x0BC0 ?u) ; VOWEL SIGN II
- (0x0BC1 0x0BC2 ?b) ; VOWEL SIGN U .. UU
- (0x0BC6 0x0BC8 ?m) ; VOWEL SIGN E .. AI
- (0x0BCD ?H) ; SIGN VIRAMA
- (0x0BD7 ?p) ; AU LENGTH MARK
- (0x0964 0x0965 ?X) ; DANDA .. DOUBLE DANDA
- (0x200C ?N) ; ZWNJ
- )
-
- ;; 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)
- ;; TAMu and TSCu fonts generate the SRI ligature with 'akhn'.
- ;; (lohit and latha do it with 'half' + 'abvs'.)
- ((0x0BB8 0x0BCD 0x0BB0 0x0BC0)
- otf:taml=akhn+)
- ("." =))
- *))
-
- ;; Syllable identification.
- (generator
- (0
- (cond
- ;; A syllable with vowel signs.
- ("((CH)*C)(mp?|b|u|p)"
- < | (1 otf:taml=akhn,half+) (3 = *) | >)
-
- ;; No vowel signs.
- ("((CH)*C)(HN?)?"
- < | (1 otf:taml=akhn,half+) (3 =) | >)
-
- ("." =))
- *))
-
- ;; Move Matra before the base consonant.
- (generator
- (0
- (cond
- (" ([^ m]*)([^ m])(m)(p)? "
- | (1 = *) (3 =) (2 =) (4 =) |)
- ("." =))
- *))
-
- ;; Apply other OTF features.
- (generator
- (0
- (cond
- (" ([^ ]+) "
- (1 otf:taml=pres,abvs,blws,psts,haln+abvm,blwm,dist))
- ("."
- [ = ]))
- *))
-
- ;; Copyright (C) 2004, 2006, 2007
- ;; 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:
-