;; sa-grantha-itrans.mim -- Sanskrit input method with ITRANS method
;; Copyright (C) 2012 Kencihi Handa 

;; 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 General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>

(input-method sa grantha-itrans)

(description "Sanskrit grantha input method by ITRANS and Harvard-Kyoto
transliteration systems.

You can use all the standard ITRANS key sequences plus key
sequences such as the below.

nk->𑌙𑍍𑌕𑍍, nkh->𑌙𑍍𑌖𑍍, ng->𑌙𑍍𑌗𑍍, ngh->𑌙𑍍𑌘𑍍
nch->𑌞𑍍𑌚𑍍, nCh->𑌞𑍍𑌛𑍍, nc->𑌞𑍍𑌚𑍍, nC->𑌞𑍍𑌛𑍍, nchh->𑌞𑍍𑌛𑍍,
nj->𑌞𑍍𑌜𑍍, njh->𑌞𑍍𑌝𑍍, nT->𑌣𑍍𑌟𑍍, nTh->𑌣𑍍𑌠𑍍, nD->𑌣𑍍𑌡𑍍, nDh->𑌣𑍍𑌢𑍍
c->𑌚𑍍, C->𑌛𑍍, z->𑌶𑍍, S->𑌷𑍍, jn->𑌜𑍍𑌞𑍍, R->𑌋
_->॒, ''->᳴

")

(title "𑌸𑌂")

(variable
(trim-last-halant
(_"If this variable is 1 (the default), the last Halant in a syllable
is removed if it is followed by non Devanagari letter. For instance,
typing \"har..\" produces \"𑌹𑌰।\", not \"𑌹𑌰𑍍।\".")
1 0 1))

(map
(starter
(".") ("~") ("#") ("$") ("*") ("]") ((C-@))
("0") ("1") ("2") ("3") ("4") ("5") ("6") ("7") ("8") ("9")
("A") ("C") ("D") ("E") ("G") ("H") ("I") ("J") ("K") ("L")
("M") ("N") ("O") ("R") ("S") ("T") ("U") ("Y")
("a") ("b") ("c") ("d") ("e") ("f") ("g") ("h") ("i")
("j") ("k") ("l") ("m") ("n") ("o") ("p") ("q") ("r")
("s") ("t") ("u") ("v") ("w") ("x") ("y") ("z")
((KP_1)) ((KP_2)) ((KP_3)) ((KP_4)) ((KP_5))
((KP_6)) ((KP_7)) ((KP_8)) ((KP_9)) ((KP_0)))

(consonant
("k" "𑌕𑍍")
("kh" "𑌖𑍍")
("K" "𑌖𑍍")
("g" "𑌗𑍍")
("gh" "𑌘𑍍")
("G" "𑌘𑍍")
(".k" "𑌕𑌼𑍍 ")
("q" "𑌕𑌼𑍍")
(".kh" "𑌖𑌼𑍍")
(".K" "𑌖𑌼𑍍")
(".g" "𑌗𑌼𑍍")
("nk" "𑌙𑍍𑌕𑍍")
("nx" "𑌙𑍍𑌕𑍍𑌷𑍍")
("nkh" "𑌙𑍍𑌖𑍍")
("nK" "𑌙𑍍𑌖𑍍")
("ng" "𑌙𑍍𑌗𑍍")
("ngh" "𑌙𑍍𑌘𑍍")
("nG" "𑌙𑍍𑌘𑍍")
("~N" "𑌙𑍍")
("N^" "𑌙𑍍")
("ch" "𑌚𑍍")
("Ch" "𑌛𑍍")	; not in ITRANS Devanagari table
("c" "𑌚𑍍")
("C" "𑌛𑍍")	; not in ITRANS Devanagari table
("chh" "𑌛𑍍")
("j" "𑌜𑍍")
("jh" "𑌝𑍍")
("J" "𑌝𑍍")
("nch" "𑌞𑍍𑌚𑍍")
("nCh" "𑌞𑍍𑌛𑍍")	; not in ITRANS Devanagari table
("nc" "𑌞𑍍𑌚𑍍")
("nC" "𑌞𑍍𑌛𑍍")	; not in ITRANS Devanagari table
("nchh" "𑌞𑍍𑌛𑍍")
("nj" "𑌞𑍍𑌜𑍍")
("njh" "𑌞𑍍𑌝𑍍")
("nJ" "𑌞𑍍𑌝𑍍")
("~n" "𑌞𑍍")
("JN" "𑌞𑍍")
("T" "𑌟𑍍")
("Th" "𑌠𑍍")
("D" "𑌡𑍍")
("Dh" "𑌢𑍍")
(".D" "𑌡𑌼𑍍")
(".Dh" "𑌢𑌼𑍍")
("nT" "𑌣𑍍𑌟𑍍")
("nTh" "𑌣𑍍𑌠𑍍")
("nD" "𑌣𑍍𑌡𑍍")
("nDh" "𑌣𑍍𑌢𑍍")
("N" "𑌣𑍍")
("t" "𑌤𑍍")
("th" "𑌥𑍍")
("d" "𑌦𑍍")
("dh" "𑌧𑍍")
("n" "𑌨𑍍")
(":n" "𑌨𑌼𑍍")	; not in ITRANS Devanagari table
("p" "𑌪𑍍")
("ph" "𑌫𑍍")
("P" "𑌫𑍍")
(".ph" "𑌫𑌼𑍍")
("f" "𑌫𑌼𑍍")
("b" "𑌬𑍍")
("bh" "𑌭𑍍")
("B" "𑌭𑍍")
("m" "𑌮𑍍")
("y" "𑌯𑍍")
("Y" "𑌯𑌼𑍍") ; not in ITRANS Devanagari table
("yh" "𑌯𑌼𑍍") ; not in ITRANS Devanagari table
(".y" "𑌯𑌼𑍍")
("r" "𑌰𑍍")
("l" "𑌲𑍍")
("L" "𑌳𑍍")
("ld" "𑌳𑍍")
("v" "𑌵𑍍")
("w" "𑌵𑍍")
("sh" "𑌶𑍍")
("z" "𑌜𑌼𑍍")
(".j" "𑌜𑌼𑍍")
; ("z" "𑌶𑍍")
("S" "𑌷𑍍")
("Sh" "𑌷𑍍")
("shh" "𑌷𑍍")
("s" "𑌸𑍍")
("h" "𑌹𑍍")
("jn" "𑌜𑍍𑌞𑍍")
("j~n" "𑌜𑍍𑌞𑍍")
("jn" "𑌜𑍍𑌞𑍍")
("GY" "𑌜𑍍𑌞𑍍")
("dny" "𑌜𑍍𑌞𑍍")	; not in ITRANS Devanagari table
("x" "𑌕𑍍𑌷𑍍")
("ks" "𑌕𑍍𑌸𑍍")
("ksh" "𑌕𑍍𑌷𑍍")
("gH" 𑌗𑍍)
("jH" 𑌜𑍍)
("DH" "𑌡𑍍")
("bH" "𑌬𑍍"))

(independent
("a" "𑌅")
("aa" "𑌆")
("A" "𑌆")
("i" "𑌇")
("ii" "𑌈")
("I" "𑌈")
("u" "𑌉")
("uu" "𑌊")
("U" "𑌊")
("R" "𑌋")
("RRi" "𑌋")
("R^i" "𑌋")
("LLi" "𑌌")	; not in ITRANS Devanagari table
("L^i" "𑌌")	; not in ITRANS Devanagari table
(".c" "𑌏") ; not in ITRANS Devanagari table
("ea" "𑌏") ; not in ITRANS Devanagari table
; keys for e and ee are deliberately interchanged (sanskrit almost never uses hrasva-s)
("ee" (set CANDRA-E-O 0) "𑌏𑌀")	; not in ITRANS Devanagari table
("E" "𑌏𑌀")	; not in ITRANS Devanagari table
("e" (set CANDRA-E-O ?𑌏) "𑌏")
("ai" "𑌐")
; keys for o and oo are deliberately interchanged (sanskrit almost never uses hrasva-s)
("oo" (set CANDRA-E-O 0) "𑌓𑌀") ; not in ITRANS Devanagari table
("O" "𑌓𑌀")	; not in ITRANS Devanagari table
("o" (set CANDRA-E-O ?𑌆) "𑌓")
("oa" "𑌆")
("au" "𑌔")
("RRI" "𑍠")	; not in ITRANS Devanagari table
("RR" "𑍠")	; not in ITRANS Devanagari table
("R^I" "𑍠")	; not in ITRANS Devanagari table
("LLI" "𑍡")	; not in ITRANS Devanagari table
("L^I" "𑍡")	; not in ITRANS Devanagari table
(".N" "𑌁")
(".n" "𑌂")
("M" "𑌂")
("H" "𑌃")
("kH" "ᳵ") 
("pH" "ᳶ")
(".a" "𑌽")
(".h" "𑍍")
("AUM" "𑍐")
("OM" "𑍐"))

(digit
("0" "௦")
("1" "௧")
("2" "௨")
("3" "௩")
("4" "௪")
("5" "௫")
("6" "௬")
("7" "௭")
("8" "௮")
("9" "௯")
((KP_0) "௦")
((KP_1) "௧")
((KP_2) "௨")
((KP_3) "௩")
((KP_4) "௪")
((KP_5) "௫")
((KP_6) "௬")
((KP_7) "௭")
((KP_8) "௮")
((KP_9) "௯"))

(dependent
("a" (delete @-) "")
("aa" (delete @-) "𑌾")
("A" (delete @-) "𑌾")
("i" (delete @-) "𑌿")
("ii" (delete @-) "𑍀")
("I" (delete @-) "𑍀")
("u" (delete @-) "𑍁")
("uu" (delete @-) "𑍂")
("U" (delete @-) "𑍂")
("R" (delete @-) "𑍃")
("RRi" (delete @-) "𑍃")
("R^i" (delete @-) "𑍃")
("LLi" (delete @-) "𑍢")	; not in ITRANS Devanagari table
("L^i" (delete @-) "𑍢")	; not in ITRANS Devanagari table
(".c" (delete @-) "𑍇") ; not in ITRANS Devanagari table
("ea" (delete @-) "𑍇") ; not in ITRANS Devanagari table
("ee" (delete @-) (set CANDRA-E-O 0) "𑍇𑌀") ; not in ITRANS Devanagari table
("E" (delete @-) "𑍇𑌀")	; not in ITRANS Devanagari table
("e" (delete @-) (set CANDRA-E-O ?𑍇) "𑍇")
("ai" (delete @-) "𑍈")
("oo" (delete @-) (set CANDRA-E-O 0) "𑍋𑌀") ; not in ITRANS Devanagari table
("O" (delete @-) "𑍋𑌀")	; not in ITRANS Devanagari table
("o" (delete @-) (set CANDRA-E-O ?𑌾) "𑍋")
("oa" "𑌾")
("au" (delete @-) "𑍌")
("RR" (delete @-) "𑍄")	; not in ITRANS Devanagari table
("RRI" (delete @-) "𑍄")	; not in ITRANS Devanagari table
("R^I" (delete @-) "𑍄")	; not in ITRANS Devanagari table
("LLI" (delete @-) "𑍣")	; not in ITRANS Devanagari table
("L^I" (delete @-) "𑍣"))	; not in ITRANS Devanagari table

(dot
("." (set DOT 1) "."))

(eo-dot-c
(".c" (delete @-) (insert CANDRA-E-O)))

(danda
(".." "।")	; not in ITRANS Devanagari table
(".," "॥")	; not in ITRANS Devanagari table
(". " "।" (pushback 1))
((?. Return) "।" (pushback 1))
((?. Tab) "।" (pushback 1))
(".(" "।" (pushback 1))
(".)" "।" (pushback 1))
(".[" "।" (pushback 1))
(".]" "।" (pushback 1))
(".{" "।" (pushback 1))
(".}" "।" (pushback 1))
(".'" "।" (pushback 1))
(".\"" "।" (pushback 1)))

(commit-key
((S-C-Return)))

(backspace
((BackSpace) (undo)))

(udattta
("_" "॒")
("''" "᳴"))
)

(state
(init
(starter (pushback 1) (shift intermediate))
(udattta)
(misc))

(intermediate
;; CANDRA-E-O is set to the character CANDRA E or CANDRA O when "e"
;; or "o" is typed, and in that case, if ".c" is typed, the
;; character set to CANDRA-E-O is inserted.
(t (set CANDRA-E-O 0))
;; LAST-HALANT-POS is set to the position after a consonat + HALANT
;; sequence. If the following key is for non-letter, that HALANT
;; character is removed.
(consonant (mark LAST-HALANT-POS) (shift second))
(independent (cond (CANDRA-E-O (shift after-eo)) (1 (shift init))))
(digit (shift init))
(danda (shift init))
(udattta (shift init))
(backspace)
(commit-key (shift init)))

(second
;; CANDRA-E-O is set to the character CANDRA E or CANDRA O when "e"
;; or "o" is typed, and in that case, if ".c" is typed, the
;; character set to CANDRA-E-O is inserted.
(t (set CANDRA-E-O 0))
(consonant (mark LAST-HALANT-POS))
(dependent (cond (CANDRA-E-O (shift after-eo)) (1 (shift init))))
(danda
(cond (trim-last-halant (move LAST-HALANT-POS) (delete @-) (move @>)))
(shift init))
(udattta
(cond (trim-last-halant (move LAST-HALANT-POS) (delete @-) (move @>)))
(shift init))
(backspace)
(commit-key (shift init))
(nil (cond (trim-last-halant (move LAST-HALANT-POS) (delete @-) (move @>)))
(shift init)))

(after-eo
(t (set DOT 0))
(dot)
(eo-dot-c (shift init))
(danda (shift init))
(udattta (shift init))
(commit-key (shift init))
(nil (cond (DOT (delete @-) (pushback 1))) (shift init))))

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