;; DEVA-OTF.flt -- Font Layout Table for Devanagari OpenType font
-;; Copyright (C) 2003, 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.
+;; Copyright (C) 2003, 2004, 2007, 2008 AIST (H15PRO112)
+;; See the end for copying conditions.
-;; 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.
+(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.
-(font layouter deva-otf nil
- (font (nil nil unicode-bmp :otf=deva=rphf)))
-
(category
+ ;; X: generic
;; C: consonant (except for RA)
;; R: consonant RA
;; n: NUKTA
;; S: stress sign / accent (above)
;; s: stress sign / accent (below)
;; V: independent vowel
+ ;; Z: internal use
;; N: ZWNJ
;; J: ZWJ
- ;; X: generic
(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
(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
("." =))
*))
-;; Reordering
+;; Stage 1
+;; Syllable identification and eordering.
(generator
(0
(cond
;; A syllable containing a vowel sign.
- ;;1 23 45 6 7 8 9 10 11
- ("(RH)?(([CR]n?H)*[CR]n?)((m)|(b)|([up]))(A)?(a)?(S)?(s)?"
- < | (5 =) (2 move-h) (6 =) (11 =) (7 =) (1 otf:deva=rphf+)
- (8 =) (10 =) (9 =) | >)
+ ;;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 23 45 6 7 8
- ("(RH)?(([CR]n?H)*[CR]n?)((A)|(a))(S)?(s)?"
- < | (2 move-h) (8 =) (1 otf:deva=rphf+) (5 =) (7 =) (6 =) | >)
+ ;;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 23 45 6
- ("(RH)?(([CR]n?H)*[CR]n?)((S)|(s))"
- < | (2 move-h) (6 =) (1 otf:deva=rphf+) (5 =) | >)
+ ;;1 2 34 5
+ ("([CR]n?(HJ?[CR]n?)*)((S)|(s))"
+ < | (1 move-h) (5 =) (1 reph) (4 =) | >)
- ;; A special case: eyelash RA
- ("(RH)J"
- < (1 otf:deva=half+) >)
+ ;; No marks at all. Need further anylysis.
+ ("[CR]n?(HJ?[CR]n?)*(H(N|J)?)?"
+ < | (0 nomarks) | >)
- ;; Forced half form. Do not move halant.
- ;;1 23
- ("(RH)?(([CR]n?H)+)J"
- < | (2 = *) (1 otf:deva=rphf+) | >)
-
- ;; When a syllable ends with a halant, add a ZWNJ explicitly.
- ;;1 23 4
- ("(RH)?(([CR]n?H)*[CR]n?)(HN?)?"
- < | (2 move-h) (1 otf:deva=rphf+) (4 = 0x200C) | >)
+ ;; This combination is used in Marathi.
+ ((0x0905 0x0945)
+ < | = = | >)
;; A syllable starting with an independent vowel.
;;1 2 3 4 5
(move-h
(cond
- ("([CRnH]+)(H)(R)$"
+ ;; Starting with an eyelash-RA, which remains there.
+ ("(RHJ.+)(H)(R)$"
+ (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+))))
-;; If a syllable ends with a halant and a ZWNJ, render the final
-;; halant explicitly. Do not apply 'blwf' nor 'half' to the initial
-;; RA.
+ (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
- (" (R)([^N]*)(H)N "
- | (1 =) (2 gsub1) (3 =) |)
+ ;; 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 = *) (2 gsub1) (3 = *) |)
- (" ([^N]+)(H)N "
- | (1 gsub1) (2 =) |)
+ | (1 otf:deva=pres+) (2 gsub) |)
+
+ (" ([^ ]+)(H)N "
+ | (1 gsub) (2 =) |)
(" ([^ ]+) "
- | (1 gsub1) |)
+ | (1 gsub) |)
+
("." =))
*)
- (gsub1
- otf:deva=nukt,akhn,blwf,half,vatu,pres+))
+ ;; 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+)))
+ )
-;; Apply other features. The 'pres' feature is applied again for
-;; pre-base vowel sign.
+;; Stage 3
+;; Apply other features.
(generator
(0
(cond
(" ([^ ]+) "
- (1 otf:deva=pres,abvs,blws,psts,haln+abvm,blwm,dist))
+ (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:
projects / m17n / m17n-db.git / blobdiff