;; MYANMAR-ZEDI.flt -- Font Layout Table for Myanmar (Zedi font)
;; Copyright (C) 2004
;;   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., 59 Temple Place, Suite 330, Boston, MA
;; 02111-1307, USA.

;;; <li> MYANMAR-ZEDI.flt
;;;
;;; For the Myanmar Zedi family fonts to draw Myanmar script.
;;; <ul>
;;; <li> infopage: http://www.myazedi.com/downloads/MyaZedi_M17N.ttf
;;; </ul>

;; 1st stage
;; Extract syllable while detecting Kinzi, substituting subscripts,
;; and removing Halants.

(category
 (0x1000 0x107F ?O)			; other
 (0x1000 0x1021 ?C)			; consonant except for c and K
 (0x1000 0x1003 ?c)			; consonant that has subscript form
 (0x1004	?K)			; consonant NGA
 (0x1005 0x1007 ?c)
 (0x100B 0x100C ?c)
 (0x100F 0x1019 ?c)
 (0x1014	?n)			; consonant NA
 (0x101C	?c)
 (0x101A 0x101B	?M)			; cosonant that may be used as Medial
 (0x101D	?M)
 (0x101F	?M)
 (0x1021 0x102A ?I)			; independent vowel
 (0x102C 0x1032	?V)			; dependent Vowel
 (0x1036	?A)			; sign ANUSVARA
 (0x1037 0x1038	?S)			; other sign
 (0x1039	?H)			; HALANT (VIRAMA)
 (0x200C	?N)			; ZWNJ (Zero Width Non Joiner)
 )

(generator
 (0
  (cond
   ;; The following regular expression matches a syllable pattern
   ;; described in Table 10-3 of the Unicode Standard 4.0 .
   ;;<1-> <--------2--------><--4--><--6--->  <7->
   ;;             <---3--->   <5->
   ("(KH)?([CcnKM](H[CcnK])?)((HM)*)(V*A?H?)N?(S*)"
    | < (1 0xE390) (2 consonant) (4 remove-halant *) (6 = *) (7 = *) > |)
   ;; Fixme: I'm not sure about the syllable pattern for an
   ;; independent vowel.
   ("IV*[AS]*"
    | < = * > |)
   ;; Treat anything else as a single character.
   ("."
    [ = ]))
  *)

 (consonant
  (cond
   ((0x100B 0x1039 0x100C) 0xE10C)
   ((0x100D 0x1039 0x100D) 0xE00D)
   ((0x100E 0x1039 0x100D) 0xE10D)
   ((0x100F 0x1039 0x100D) 0xE20D)
   ((0x1014 0x1039 0x1010) 0xE140 0xE010)
   ((0x101E 0x1039 0x101E) 0xE01E)
   ("(n)H(c)" 0xE140 (2 subscript))
   ("(.)H(c)" (1 =) (2 subscript))
   ("(.)H(.)" (1 =) (2 =))
   ("." =)))

 (subscript
  (cond ((range 0x1000 0x101c) 0xE000)))

 (remove-halant
  (cond
   ((0x1039))
   ("." =))))

;; 2nd stage
;; Handle medials.

(category
 (0x1000 0x107F ?O)			; other
 (0x1000 0x1021 ?W)			; wide consonant
 (0x1001 0x1002 ?S)			; single-width consonant
 (0x1004 0x1005 ?S)
 (0x1007 0x1008	?S)
 (0x100B 0x100E	?S)
 (0x1012 0x1017 ?S)
 (0x1019	?S)
 (0x101A	?a)			; medial Ya
 (0x101B	?b)			; medial Ra
 (0x101D	?d)			; medial Wa
 (0x101F	?f)			; medial Ha
 (0x1020	?S)
 (0x102D 0x102E ?V)			; dependent vowel (upper)
 (0x1032	?V)
 (0x200C	?N)			; ZWNJ
 (0xE000 0xE3FF ?O)
 (0xE000 0xE01E ?w)			; wide subscript
 (0xE001 0xE002 ?s)			; single-width subscript
 (0xE005	?s)
 (0xE007	?s)
 (0xE00B	?s)
 (0xE012 0xE017 ?s)
 (0xE019	?s)
 (0xE10C 0xE10D ?s)
 (0xE140	?s)
 (0xE20D	?w)
 (0xE390	?K)			; Kinzi
 )

(generator
 (0
  (cond
   (" (K)?([WSabdfws][WSKws]?[abdf]*[^ ]*) "
    | (1 =) (2 medial = *) |)
   (" ([^ ]*) "
    = *)
   ("."
    =))
  *)

 (medial
  (cond
   ;; Medial Ya (U+101A)
   ("(..?)adf"	(1 = *) 0xE1A2)
   ("(..?)ad"	(1 = *) 0xE1A4)
   ("(..?)af"	(1 = *) 0xE1A3)
   ("(..?)a"	(1 = *) 0xE1A3)

   ;; Medial Ra (U+101B)
   ;; Fixme: Don't work well with a single-width consonant and a wide
   ;; subscript sequence,
   ("([Waf]|.[Ww])bdf"	0xE1BA (1 = *))
   ("(..?)bdf"		0xE1B9 (1 = *))
   ("([Waf]|.[Ww])bd"	0xE1B8 (1 = *))
   ("(..?)bd"		0xE1B7 (1 = *))
   ("([Waf]|.[Ww])b(V)"	0xE1B6 (1 = *) (2 =))
   ("(..?)b(V)"		0xE1B5 (1 = *) (2 =))
   ("([Waf].|.[Ww])b"	0xE1B4 (1 = *))
   ("(s|..)b"		0xE1B3 (1 = *))
   ("([Waf])b"		0xE1B2 (1 = *))
   ("(.)b"		0xE1B1 (1 = *))
   
   ;; Medial Wa (U+101D)
   ("(..?)df"	(1 = *) 0xE1D1)
   ("(..?)d"	(1 = *) 0xE01D)

   ;; Medial Ha (U+101F)
   ((0x100A 0x101F)	0x100A 0xE1F3)
   ("(..?)f"	(1 = *) 0xE1F1))))

;; 3rd stage
;; Reorder Kinzi and Vowel E.  Handle Kinzi-vowel combination.

(category
 (0x1000 0x107F ?O)
 (0x1000 0x1021 ?C)
 (0x1001 0x1002 ?c)
 (0x1004	?c)
 (0x1013	?c)
 (0x1015	?c)
 (0x101D	?c)
 (0x1008	?b)
 (0x100A 0x100D	?b)
 (0x1020	?b)
 (0x1025	?b)
 (0x102C	?A)			; Vowel AA
 (0x102D	?i)			; Vowel I
 (0x102E	?I)			; Vowel II
 (0x102F	?u)			; Vowel U
 (0x1030	?U)			; Vowel UU
 (0x1031	?e)			; Vowel E
 (0x1032	?V)			; Vowel AI
 (0x1036 0x1038	?D)
 (0x1039	?H)
 (0x200C	?N)
 (0xE000 0xE3FF ?O)
 (0xE000 0xE01D ?b)
 (0xE1A1 0xE1B8 ?b)
 (0xE390	?K)			; Kinzi
)

(generator
 (0
  (cond
   (" K([Ccb]*)(e)([^ ]*) "
    | (2 =) (1 = *) (3 kinzi-vowel = *) |)
   (" K([Ccb]*)([^ ]*) "
    | (1 = *) (2 kinzi-vowel = *) |)
   (" ([Ccb]*)(e)([^ ]*) "
    | (2 =) (1 = *) (3 = *) |)
   (" ([^ ]*) "
    = *)
   ("."
    =))
  *)

 (kinzi-vowel
  (cond
   ((0x102D) 0xE391)
   ((0x102E) 0xE391)
   ((0x1036) 0xE393)
   0xE390)))

;; 4th stage
;; Various glyph substitions.

(generator
 (0
  (cond
   (" ([^ ]*) "
    (1
     (cond
      ;; Consonant substituion.
      ((0x1009 0x1039) 0xE009 0x1039)
      ((0x1009 0xE005) 0xE109 0xE005)
      ((0x101B 0x102F) 0xE01B 0x102F)

      ;; Sign substituion.
      ((0x1014 0x1037) 0x1014 0xE037)
      ((0x101B 0x1037) 0x101B 0xE137)

      ;; Vowel substituion.
      ("(c)AH"	(1 =) 0xE02D)
      ("(c)A"	(1 =) 0xE02C)
      ((0x102D 0x1036) 0xE2D1)
      ("(b)u"	(1 =) 0xE2F1)
      ("(b)U"	(1 =) 0xE2F2)
      ("." =))
     *))
   ("."
    =))
  *))

;; Local Variables:
;; mode: lisp
;; coding: utf-8
;; End: