| Current Path : /usr/share/m17n/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/m17n/MLM2-OTF.flt |
;; MLM2-OTF.flt -- Font Layout Table for mlm2 OpenType fonts
;; Copyright (C) 2010 AIST (H15PRO112)
;; See the end for copying conditions.
(font layouter mlm2-otf nil
(version "1.6.0")
(font (nil nil unicode-bmp :otf=mlm2)))
;;; <li> MLM2-OTF.flt
;;;
;;; For mlm2 OpenType fonts to draw the Malayalam script.
;; Observed behaviour of Uniscribe in combination with kartika.ttf:
;; 1. Only the last RA can take the pref form. This last RA can come
;; a) just before blwf consonants
;; b) between blwf consonants and pstf consonants, or
;; c) after pstf consonants.
;; 2. Multiple blwf forms are allowed anywhere in a syllable as long
;; as the context (the combination of the preceding consonant and the
;; blwf consonant) permits.
;; 3. Multiple pstf forms are allowed as long as they are the last
;; consonants, optionally followed by a RA.
;; About chillu letters:
;; The sequence "consonant + VIRAMA + ZWJ" represents a chillu letter,
;; which makes an independent syllable. The only exception is "CHILLU
;; N + RRA" (0D7B 0D31) and its equivalent "NA + VIRAMA + ZWJ + RRA"
;; (0D28 0D4D 200D 0D31), which make a ligature.
(category
(0x0D00 0x0D7F ?X) ; generic
(0x0D02 0x0D03 ?A) ; SIGN ANUSVARA .. VISARGA
(0x0D05 0x0D14 ?V) ; LETTER A .. AU
(0x0D15 0x0D39 ?C) ; LETTER KA .. HA
(0x0D3E 0x0D44 ?p) ; VOWEL SIGN AA .. VOCALIC RR
(0x0D46 0x0D48 ?m) ; VOWEL SIGN E .. AI
(0x0D4D ?H) ; SIGN VIRAMA
(0x0D57 ?p) ; AU LENGTH MARK
(0x0D60 0x0D61 ?V) ; LETTER VOCALIC RR .. VOCALIC LL
(0x0D62 0x0D63 ?b) ; VOWEL SIGN VOCALIC L .. LL
(0x200C ?N) ; ZWNJ
(0x200D ?J) ; ZWJ
(0x25CC ?X) ; DOTTED CIRCLE
(akhn ?C)
(blwf ?B)
(pstf ?P)
(pref ?R)
)
;; Stage 0
;; Preprocessing
(generator
(0
(cond
;; Decompose two-part vowel signs
((0x0D4A) 0x0D46 0x0D3E)
((0x0D4B) 0x0D47 0x0D3E)
((0x0D4C) 0x0D46 0x0D57)
;; Replace CHILLU N + RRA with a pseudo-consonant
((0x0D7B 0x0D31) :otf=mlm2=akhn+)
((0x0D28 0x0D4D 0x200D 0x0D31) :otf=mlm2=akhn+)
;; Other chillu letters
((0x0D23 0x0D4D 0x200D) 0x0D7A)
((0x0D28 0x0D4D 0x200D) 0x0D7B)
((0x0D30 0x0D4D 0x200D) 0x0D7C)
((0x0D32 0x0D4D 0x200D) 0x0D7D)
((0x0D33 0x0D4D 0x200D) 0x0D7E)
((0x0D15 0x0D4D 0x200D) 0x0D7F)
("." =))
*))
;; Stage 1
;; Syllable identification
(generator
(0
(cond
;; Consonant-based syllables
("(CJ?HJ?)*C(H[NJ]?|m?b?p?)A?"
< | = * | >)
;; Syllables with an independent vowel
("V(J?HC)?m?b?p?A?"
< | = * | >)
;; Two-part vowel signs
((0x0D46 0x0D3E)
(cond
((font-facility 0x25CC) < 0x0D46 0x25CC 0x0D3E >)
(".+" < 0x0D4A >)))
((0x0D47 0x0D3E)
(cond
((font-facility 0x25CC) < 0x0D47 0x25CC 0x0D3E >)
(".+" < 0x0D4B >)))
((0x0D46 0x0D57)
(cond
((font-facility 0x25CC) < 0x0D46 0x25CC 0x0D57 >)
(".+" < 0x0D4C >)))
;; Combining marks are displayed with a DOTTED CIRCLE.
("m"
(cond
((font-facility 0x25CC) < = 0x25CC >)
("." [ = ])))
("[HbpA]"
(cond
((font-facility 0x25CC) < 0x25CC = >)
("." [ = ])))
((0x200D 0x0D4D 0x0D30)
(cond
((font-facility 0x25CC) < :otf=mlm2=pref+ 0x25CC >)
(".+" [ :otf=mlm2=pref+ ])))
("JHC"
(cond
((font-facility 0x25CC) < 0x25CC :otf=mlm2=blwf,pstf+ >)
(".+" [ :otf=mlm2=blwf,pstf+ ])))
("." =))
*))
;; Stage 2
;; Basic shaping forms and matra reordering
(generator
(0
:otf?mlm2=locl,akhn,pref,blwf,pstf+
(cond
;; pref after pstf
;; 1 23 4 5 6 7
(" ([CRBPHJ]*[CRBV])((J?PP)*)J?(RR)(H[NJ]?)?(m)?(b?p?A?) "
| (6 =) (4 :otf=mlm2=pref+) (1 :otf=mlm2=locl,akhn,blwf,half,cjct+)
(2 :otf=mlm2=pstf+) (5 = *) (7 = *) |)
;; pref between blwf and pstf
;; 1 2 34 5 6 7
(" ([CRBPHJV]+)(RR)((J?PP)+)(H[NJ]?)?(m)?(b?p?A?) "
| (6 =) (2 :otf=mlm2=pref+) (1 :otf=mlm2=locl,akhn,blwf,half,cjct+)
(3 :otf=mlm2=pstf+) (5 = *) (7 = *) |)
;; pref before blwf
;; 1 2 34 56 7 8 9
(" ([CRBPHJV]+)(RR)((J?BB)+)((J?PP)*)(H[NJ]?)?(m)?(b?p?A?) "
| (8 =) (2 :otf=mlm2=pref+) (1 :otf=mlm2=locl,akhn,blwf,half,cjct+)
(3 :otf=mlm2=blwf+) (5 :otf=mlm2=pstf+) (7 = *) (9 = *) |)
;; no pref
;; 1 23 4 5 6
(" ([CRBPHJ]*[CRBV])((J?PP)*)(H[NJ]?)?(m)?(b?p?A?) "
| (5 =) (1 :otf=mlm2=locl,akhn,blwf,half,cjct+) (2 :otf=mlm2=pstf+)
(4 = *) (6 = *) |)
("." =))
*))
;; Stage 3
;; Final reordering (Move pre-base matra and pre-base RA after the last halant)
(generator
(0
(cond
;; 1 2 3
(" (m?R?)([^ ]+H)([^H ]+) "
| (2 = *) (1 = *) (3 = *) |)
("." =))
*))
;; Stage 4
;; Presentation forms
(generator
(0
(cond
(" ([^ ]+) "
| (1 :otf=mlm2=pres,abvs,blws,psts,haln,calt+) |)
("." =))
*))
;; Stage 5
;; Remove ZWNJ/ZWJ
(generator
(0
(cond
("[NJ]")
("." =))
*))
;; Stage 6
;; GPOS processing
(generator
(0
(cond
(" ([^ ]+) "
(1 :otf=mlm2=+kern,dist,abvm,blwm))
("." =))
*))
;; Copyright (C) 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: