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- ;; KNDA-OTF.flt -- Font Layout Table for Kannada OpenType fonts
- ;; Copyright (C) 2004, 2007 AIST (H15PRO112)
- ;; See the end for copying conditions.
-
- (font layouter knda-otf nil
- (font (nil nil unicode-bmp :otf=knda=rphf)))
-
- ;;; <li> KNDA-OTF.flt
- ;;;
- ;;; For Kannada OpenType fonts to draw the Kannada script.
-
- (category
- ;; C: consonant (except for RA)
- ;; R: RA
- ;; n: NUKTA
- ;; H: HALANT
- ;; u: vowel sign (above)
- ;; b: vowel sign (below)
- ;; p: vowel sign (post)
- ;; l: length mark
- ;; a: vowel modifier (post)
- ;; V: independent vowel
- ;; N: ZWNJ (ZERO WIDTH NON-JOINER)
- ;; J: ZWJ (ZERO WIDTH JOINER)
- ;; X: generic
- (0x0C80 0x0CFF ?X) ; generic
- (0x0C82 0x0C83 ?a) ; SIGN ANUSVARA .. VISARGA
- (0x0C85 0x0C94 ?V) ; LETTER A .. LETTER AU
- (0x0C95 0x0CB9 ?C) ; LETTER KA .. LETTER HA
- (0x0CB0 ?R) ; LETTER RA
- (0x0CBC ?n) ; SIGN NUKTA
- (0x0CBE ?p) ; VOWEL SIGN AA
- (0x0CBF ?u) ; VOWEL SIGN I
- (0x0CC1 0x0CC4 ?p) ; VOWEL SIGN U .. RR
- (0x0CC6 ?u) ; VOWEL SIGN E
- (0x0CCC ?u) ; VOWEL SIGN AU
- (0x0CCD ?H) ; SIGN VIRAMA
- (0x0CD5 0x0CD6 ?l) ; LENGTH MARK .. AI LENGTH MARK
- (0x0CDE ?C) ; LETTER FA (LLLA)
- (0x0CE0 0x0CE1 ?V) ; LETTER VOCALIC RR .. LL
- (0x0CE2 0x0CE3 ?b) ; VOWEL SIGN VOCALIC L .. LL
- (0x0964 0x0965 ?X) ; DANDA .. DOUBLE DANDA
- (0x200C ?N) ; ZWNJ
- (0x200D ?J) ; ZWJ
- )
-
- ;; Preprocessing.
- (generator
- (0
- (cond
- ;; Decompose two-part and three-part vowel signs.
- ((0x0CC0)
- 0x0CBF 0x0CD5)
- ((0x0CC7)
- 0x0CC6 0x0CD5)
- ((0x0CC8)
- 0x0CC6 0x0CD6)
- ((0x0CCA)
- 0x0CC6 0x0CC2)
- ((0x0CCB)
- 0x0CC6 0x0CC2 0x0CD5)
- ;; Move ZWJ between RA and HARANT.
- ("(R)(J)(H)"
- (2 =) (1 =) (3 =))
- ("." =))
- *))
-
- ;; Syllable identification.
- ;; Apply 'nukt' and 'akhn' before reordering.
-
- (generator
- (0
- (cond
- ;; A syllable with an above vowel sign.
- ;;1 2 3 4
- ("(J)?([CR]n?(H[CR]n?)*)(up?l?a?)"
- < | (1 =) (2 otf:knda=nukt,akhn+) (4 = *) | >)
-
- ;; A syllable with a post- or below vowel sign.
- ;;1 2 3 4 5
- ("(J)?([CR]n?(H[CR]n?)*)(p|b)(a)?"
- < | (1 =) (2 otf:knda=nukt,akhn+) (4 =) (5 =) | >)
-
- ;; A syllable with a vowel modifier, but without vowel signs.
- ;;1 2 3 4
- ("(J)?([CR]n?(H[CR]n?)*)(a)"
- < | (1 =) (2 otf:knda=nukt,akhn+) (4 =) | >)
-
- ;; No vowel signs, no vowel modifiers.
- ;;1 2 3 4
- ("(J)?([CR]n?(H[CR]n?)*)(HN?)?"
- < | (1 =) (2 otf:knda=nukt,akhn+) (4 = *) | >)
-
- ;; A syllable starting with an independent vowel.
- ("Va?"
- < | = * | >)
-
- ("." =))
- *))
-
- ;; Reordering. The base consonant is always the first one, because
- ;; all Kannada consonants have a below form.
- (generator
- (0
- (cond
- ;; 1 2 34 5 6 7 8
- (" (RH)?([^N])((H[^N])*)(u|b)?(p)?(l)?(a)? "
- | (2 =) (5 =) (6 =) (3 move-h) (7 =) (1 otf:knda=rphf+) (8 =) |)
-
- ;; A syllable ending with a halant.
- ;; 1 2 34
- (" (RH)?(.H)((.H)*)N? "
- ;; WORKAROUND : Kedage fonts produce halant form with 'psts'.
- | (2 otf:knda=haln,psts+)(3 = *) (1 otf:knda=rphf+) |)
-
- ;; No reph movement if preceded by a ZWJ.
- ;; 1 23 4 5 6
- (" J(.)((H[^N])*)(u|b)?(p)?(l?a?) "
- | (1 =) (4 =) (5 =) (2 move-h) (6 = *) |)
-
- ;; 1 23
- (" J(.H)((.H)*)N? "
- | (1 otf:knda=haln,psts+) (2 = *) |)
-
- ("." =))
- *)
-
- (move-h
- (cond
- ("(H)(.+)"
- (2 = *) (1 =)))))
-
- ;; Apply other OTF features.
- (generator
- (0
- (cond
- (" ([^ ]+) "
- (1 otf:knda=blwf,abvs,blws,psts+abvm,blwm,dist))
-
- ("."
- [ = ]))
- *))
-
- ;; Copyright (C) 2004, 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:
-