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- ;; DEVA-OTF.flt -- Font Layout Table for Devanagari OpenType font
- ;; Copyright (C) 2003, 2004, 2007, 2008 AIST (H15PRO112)
- ;; See the end for copying conditions.
-
- (font layouter deva-otf nil
- (font (nil nil unicode-bmp :otf=deva=rphf)))
-
- ;;; <li> DEVA-OTF.flt
- ;;;
- ;;; For Devanagari OpenType fonts to draw the Devanagari script.
-
- (category
- ;; X: generic
- ;; C: consonant (except for RA)
- ;; R: consonant RA
- ;; n: NUKTA
- ;; H: HALANT
- ;; m: vowel sign (pre)
- ;; u: vowel sign (above)
- ;; b: vowel sign (below)
- ;; p: vowel sign (post)
- ;; A: vowel modifier (above)
- ;; a: vowel modifier (post)
- ;; S: stress sign / accent (above)
- ;; s: stress sign / accent (below)
- ;; V: independent vowel
- ;; Z: internal use
- ;; N: ZWNJ
- ;; J: ZWJ
- (0x0900 0x097F ?X) ; generic
- (0x0900 ?Z) ; internal use
- (0x0901 0x0902 ?A) ; SIGN CANDRABINDU .. ANUSVARA
- (0x0903 ?a) ; SIGN VISARGA
- (0x0904 0x0914 ?V) ; LETTER SHORT A .. AU
- (0x0915 0x0939 ?C) ; LETTER KA .. HA
- (0x0930 ?R) ; LETTER RA
- (0x093C ?n) ; SIGN NUKTA
- (0x093E ?p) ; VOWEL SIGN AA
- (0x093F ?m) ; VOWEL SIGN I
- (0x0940 ?p) ; VOWEL SIGN II
- (0x0941 0x0944 ?b) ; VOWEL SIGN UU .. VOCALIC RR
- (0x0945 0x0948 ?u) ; VOWEL SIGN CANDRA E .. AI
- (0x0949 0x094C ?p) ; VOWEL SIGN CANDRA O .. AU
- (0x094D ?H) ; SIGN VIRAMA
- (0x0951 ?S) ; STRESS SIGN UDATTA
- (0x0952 ?s) ; STRESS SIGN ANUDATTA
- (0x0953 0x0954 ?S) ; GRAVE ACCENT .. ACUTE ACCENT
- (0x0958 0x095F ?C) ; LETTER QA .. YYA
- (0x0960 0x0961 ?V) ; LETTER VOCALIC RR .. VOCALIC LL
- (0x0962 0x0963 ?b) ; VOWEL SIGN VOCALIC L .. VOCALIC LL
- (0x0972 ?V) ; LETTER CANDRA A
- (0x097B 0x097C ?C) ; LETTER GGA .. JJA
- (0x097E 0x097F ?C) ; LETTER DDDA .. BBA
- (0x200C ?N) ; ZWNJ
- (0x200D ?J) ; ZWJ
- )
-
- ;; Stage 0
- ;; Compose consonant and nukta
- (generator
- (0
- (cond
- ((0x0928 0x093C) 0x0929)
- ((0x0930 0x093C) 0x0931)
- ((0x0933 0x093C) 0x0934)
- ((0x0915 0x093C) 0x0958)
- ((0x0916 0x093C) 0x0959)
- ((0x0917 0x093C) 0x095A)
- ((0x091C 0x093C) 0x095B)
- ((0x0921 0x093C) 0x095C)
- ((0x0922 0x093C) 0x095D)
- ((0x092B 0x093C) 0x095E)
- ((0x092F 0x093C) 0x095F)
- ("." =))
- *))
-
- ;; Stage 1
- ;; Syllable identification and eordering.
- (generator
- (0
- (cond
- ;; A syllable containing a vowel sign.
- ;;1 2 34 5 6 7 8 9 10
- ("([CR]n?(HJ?[CR]n?)*)((m)|(b)|(u|p))(A)?(a)?(S)?(s)?"
- < | (4 =) (1 move-h) (5 =) (10 =) (6 =) (1 reph) (7 =) (9 =) (8 =) | >)
-
- ;; A syllable without vowel signs but with a vowel modifier.
- ;;1 2 34 5 6 7
- ("([CR]n?(HJ?[CR]n?)*)((A)|(a))(S)?(s)?"
- < | (1 move-h) (7 =) (1 reph) (4 =) (6 =) (5 =) | >)
-
- ;; No vowel signs, No vowel modifiers, but with a stress sign or an accent.
- ;;1 2 34 5
- ("([CR]n?(HJ?[CR]n?)*)((S)|(s))"
- < | (1 move-h) (5 =) (1 reph) (4 =) | >)
-
- ;; No marks at all. Need further anylysis.
- ("[CR]n?(HJ?[CR]n?)*(H(N|J)?)?"
- < | (0 nomarks) | >)
-
- ;; This combination is used in Marathi.
- ((0x0905 0x0945)
- < | = = | >)
-
- ;; A syllable starting with an independent vowel.
- ;;1 2 3 4 5
- ("(V)(A)?(a)?(S)?(s)?"
- < | (1 =) (5 =) (2 =) (4 =) (3 =) | >)
-
- ("." =))
- *)
-
- (move-h
- (cond
- ;; Starting with an eyelash-RA, which remains there.
- ("(RHJ.+)(H)(R)$"
- (1 = *) (3 =) (2 =))
- ("RHJ.*"
- = *)
-
- ;; Starting with a reph, which is removed.
- ("RH(.+)(H)(R)$"
- (1 = *) (3 =) (2 =))
- ("RH(.+)"
- (1 = *))
-
- ("(.+)(H)(R)$"
- (1 = *) (3 =) (2 =))
- (".+"
- = *)))
-
- (reph
- (cond
- ("RHJ.*")
- ("(RH).*"
- (1 otf:deva=rphf+))))
-
- (del-reph
- (cond
- ("RHJ.*"
- = *)
- ("RH(.*)"
- (1 = *))
- (".+"
- = *)))
-
- (nomarks
- (cond
- ;; Ending with a Halant and a ZWJ.
- (".+HJ$"
- (0 del-reph) (0 reph))
-
- ;; Ending with a Halant and an optional ZWNJ. Add ZWNJ explicitly.
- ("(.+)(H)N?$"
- (1 move-h) (1 reph) (2 =) 0x200C)
-
- ;; Ending with a consonant.
- (".+"
- (0 move-h) (0 reph))))
- )
-
- ;; Stage 2
- ;; Apply GSUB features. If a syllable ends with a halant and a ZWNJ,
- ;; render the final halant explicitly.
- (generator
- (0
- (cond
- ;; Allow eyelash RA to appear at the beginning.
- (" (RH)J([^ ]+)(H)N "
- | (1 otf:deva=half+) (2 gsub) (3 =) |)
- (" (m)?(RH)J([^ ]*) "
- | (1 =) (2 otf:deva=half+) (3 gsub) |)
-
- ;; Avoid applying 'blwf' and 'half' to the "RH" at the beginning;
- (" (R)([^ ]*)(H)N "
- | (1 =) (2 gsub) (3 =) |)
- (" (m?R)([^ ]*) "
- | (1 otf:deva=pres+) (2 gsub) |)
-
- (" ([^ ]+)(H)N "
- | (1 gsub) (2 =) |)
- (" ([^ ]+) "
- | (1 gsub) |)
-
- ("." =))
- *)
-
- ;; Dispite Rule R5a (The Unicode Standard 5.0, p.305), we use the
- ;; below form to depict the sequence "RHJ" at non-initial positions.
- ;; This is to avoid interpreting the sequence "CHRHJ" as "CH" +
- ;; "RHJ". It should be parsed as "CHR" + "HJ".
- (gsub
- (cond
- ("([^J]*)J(.*)"
- (1 otf:deva=nukt,akhn,blwf,half,vatu,pres+) (2 gsub))
- (".*"
- otf:deva=nukt,akhn,blwf,half,vatu,pres+)))
- )
-
- ;; Stage 3
- ;; Apply other features.
- (generator
- (0
- (cond
- (" ([^ ]+) "
- (1 otf:deva=abvs,blws,psts,haln+abvm,blwm,dist))
- ("."
- [ = ]))
- *))
-
- ;; Copyright (C) 2003, 2004, 2007, 2008
- ;; 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:
-