180 lines
4.0 KiB
Plaintext
180 lines
4.0 KiB
Plaintext
;; GUR2-OTF.flt -- Font Layout Table for gur2 OpenType fonts
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;; Copyright (C) 2010 AIST (H15PRO112)
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;; See the end for copying conditions.
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(font layouter gur2-otf nil
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(version "1.6.0")
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(font (nil nil unicode-bmp :otf=gur2)))
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;;; <li> GUR2-OTF.flt
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;;;
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;;; For gur2 OpenType fonts to draw the Gurmukhi script.
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(category
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(0x0A00 0x0A7F ?X) ; generic
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(0x0A01 0x0A02 ?a) ; SIGN ADAK BINDI .. BINDI
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(0x0A03 ?A) ; SIGN VISARGA
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(0x0A05 0x0A14 ?V) ; LETTER A .. AU
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(0x0A15 0x0A38 ?C) ; LETTER KA .. SA
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(0x0A3C ?n) ; SIGN NUKTA
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(0x0A3E ?p) ; VOWEL SIGN AA
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(0x0A3F ?m) ; VOWEL SIGN I
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(0x0A40 ?p) ; VOWEL SIGN II
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(0x0A41 0x0A42 ?b) ; VOWEL SIGN U .. UU
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(0x0A47 0x0A4C ?u) ; VOWEL SIGN EE .. AU
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(0x0A4D ?H) ; SIGN VIRAMA
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;; (0x0A51 ?) ; SIGN UDAAT
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(0x0A59 0x0A5E ?C) ; LETTER KHHA .. FA
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(0x0A70 ?a) ; TIPPI
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(0x0A71 ?d) ; ADDAK
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;; (0x0A75 ?) ; SIGN YAKASH
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(0x200C ?N) ; ZWNJ
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(0x200D ?J) ; ZWJ
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(0x25CC ?X) ; DOTTED CIRCLE
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(pstf ?P)
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)
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;; Stage 0
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;; Preprocessing
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(generator
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(0
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(cond
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;; Compose a consonant and a nukta
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((0x0A32 0x0A3C) 0x0A33)
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((0x0A38 0x0A3C) 0x0A36)
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((0x0A16 0x0A3C) 0x0A59)
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((0x0A17 0x0A3C) 0x0A5A)
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((0x0A1C 0x0A3C) 0x0A5B)
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((0x0A2B 0x0A3C) 0x0A5E)
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("." =))
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*))
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;; Stage 1
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;; Syllable identification
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(generator
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(0
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(cond
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;; Consonant-based syllables
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("(Cn?J?HJ?)*Cn?(H[NJ]?|m?u?b?p?n?)a?A?"
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< | = * | >)
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;; Syllables with an independent vowel
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("Vn?(J?HC)?m?u?b?p?n?a?A?"
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< | = * | >)
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;; Combining marks are displayed with a DOTTED CIRCLE.
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("m"
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(cond
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((font-facility 0x25CC) < = 0x25CC >)
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("." [ = ])))
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("[nHubpaA]"
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(cond
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((font-facility 0x25CC) < 0x25CC = >)
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("." [ = ])))
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("JHC"
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(cond
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((font-facility 0x25CC) < 0x25CC :otf=gur2=blwf,pstf+ >)
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(".+" [ :otf=gur2=blwf,pstf+ ])))
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("." =))
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*))
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;; Stage 2
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;; Basic shaping forms and matra reordering
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(generator
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(0
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(cond
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;; Explicit halant forms
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(" ([CnHJ]+)(HN?a?A?) "
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(1 :otf?gur2=locl,nukt,akhn,blwf,pstf+)
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| (1 shaping) (2 = *) |)
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;; Ordinary syllables
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;; 1 2 3 4 5 6
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(" ([CnHJV]+)(mn?)?(un?)?(bn?)?(pn?)?(a?A?) "
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(1 :otf?gur2=locl,nukt,akhn,blwf,pstf+)
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| (2 = *) (1 shaping) (4 = *) (3 = *) (5 = *) (6 = *) |)
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("." =))
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*)
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(shaping
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(cond
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("([CnHJP]*[CV]n?)((J?PP)+)$"
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(1 :otf=gur2=locl,nukt,akhn,blwf,cjct+) (2 :otf=gur2=pstf+))
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(".+"
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(0 :otf=gur2=locl,nukt,akhn,blwf,cjct+))))
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)
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;; Stage 3
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;; Final reordering (Move pre-base matra after the last halant)
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(generator
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(0
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(cond
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;; 1 2 3
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(" (mn?)([^ ]+HJ?)([^H ]+) "
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| (2 = *) (1 = *) (3 = *) |)
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("." =))
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*))
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;; Stage 4
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;; Nukta for matra and presentation forms
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(generator
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(0
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(cond
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(" ([^ ]+) "
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| (1 :otf=gur2=nukt,pres,abvs,blws,psts,haln,calt+) |)
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("." =))
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*))
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;; Stage 5
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;; Remove ZWNJ/ZWJ
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(generator
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(0
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(cond
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("[NJ]")
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("." =))
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*))
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;; Stage 6
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;; GPOS processing
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(generator
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(0
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(cond
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(" ([^ ]+) "
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(1 :otf=gur2=+kern,dist,abvm,blwm))
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("." =))
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*))
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;; Copyright (C) 2010
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H15PRO112
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;; This file is part of the m17n database; a sub-part of the m17n
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;; library.
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;; The m17n library is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU Lesser General Public License
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;; as published by the Free Software Foundation; either version 2.1 of
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;; the License, or (at your option) any later version.
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;; The m17n library is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; Lesser General Public License for more details.
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;; You should have received a copy of the GNU Lesser General Public
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;; License along with the m17n library; if not, write to the Free
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;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;; Local Variables:
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;; mode: emacs-lisp
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;; End:
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