diff options
Diffstat (limited to 'Master/texmf-dist/tex/latex/polyglossia/polyglossia-korean.lua')
-rw-r--r-- | Master/texmf-dist/tex/latex/polyglossia/polyglossia-korean.lua | 603 |
1 files changed, 603 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/latex/polyglossia/polyglossia-korean.lua b/Master/texmf-dist/tex/latex/polyglossia/polyglossia-korean.lua new file mode 100644 index 00000000000..c09ae6d5b74 --- /dev/null +++ b/Master/texmf-dist/tex/latex/polyglossia/polyglossia-korean.lua @@ -0,0 +1,603 @@ +-- +-- polyglossia-korean.lua +-- + +local glyph_id = node.id"glyph" +local hbox_id = node.id"hlist" +local vbox_id = node.id"vlist" +local glue_id = node.id"glue" +local penalty_id = node.id"penalty" +local disc_id = node.id"disc" + +-- +-- attr_korean: variant = plain (0), classic (1), modern (2) +-- +local attr_korean = luatexbase.attributes["xpg@attr@korean"] +local attr_josa = luatexbase.attributes["xpg@attr@autojosa"] + +-- +-- characters after which linebreak is not allowed +-- +local nobr_after = { + [0x28] = 1, -- ( LEFT PARENTHESIS + [0x3C] = 1, -- < LESS-THAN SIGN + [0x5B] = 1, -- [ LEFT SQUARE BRACKET + [0x60] = 1, -- ` GRAVE ACCENT + [0x7B] = 1, -- { LEFT CURLY BRACKET + [0xAB] = 1, -- « LEFT-POINTING DOUBLE ANGLE QUOTATION MARK + [0x2018] = 1, -- ‘ LEFT SINGLE QUOTATION MARK + [0x201C] = 1, -- “ LEFT DOUBLE QUOTATION MARK + [0x2329] = 1, -- 〈 LEFT-POINTING ANGLE BRACKET + [0x3008] = 1, -- 〈 LEFT ANGLE BRACKET + [0x300A] = 1, -- 《 LEFT DOUBLE ANGLE BRACKET + [0x300C] = 1, -- 「 LEFT CORNER BRACKET + [0x300E] = 1, -- 『 LEFT WHITE CORNER BRACKET + [0x3010] = 1, -- 【 LEFT BLACK LENTICULAR BRACKET + [0x3014] = 1, -- 〔 LEFT TORTOISE SHELL BRACKET + [0x3016] = 1, -- 〖 LEFT WHITE LENTICULAR BRACKET + [0x3018] = 1, -- 〘 LEFT WHITE TORTOISE SHELL BRACKET + [0x301A] = 1, -- 〚 LEFT WHITE SQUARE BRACKET + [0x301D] = 1, -- 〝 REVERSED DOUBLE PRIME QUOTATION MARK + [0xFE17] = 1, -- ︗ PRESENTATION FORM FOR VERTICAL LEFT WHITE LENTICULAR BRACKET + [0xFE35] = 1, -- ︵ PRESENTATION FORM FOR VERTICAL LEFT PARENTHESIS + [0xFE37] = 1, -- ︷ PRESENTATION FORM FOR VERTICAL LEFT CURLY BRACKET + [0xFE39] = 1, -- ︹ PRESENTATION FORM FOR VERTICAL LEFT TORTOISE SHELL BRACKET + [0xFE3B] = 1, -- ︻ PRESENTATION FORM FOR VERTICAL LEFT BLACK LENTICULAR BRACKET + [0xFE3D] = 1, -- ︽ PRESENTATION FORM FOR VERTICAL LEFT DOUBLE ANGLE BRACKET + [0xFE3F] = 1, -- ︿ PRESENTATION FORM FOR VERTICAL LEFT ANGLE BRACKET + [0xFE41] = 1, -- ﹁ PRESENTATION FORM FOR VERTICAL LEFT CORNER BRACKET + [0xFE43] = 1, -- ﹃ PRESENTATION FORM FOR VERTICAL LEFT WHITE CORNER BRACKET + [0xFE47] = 1, -- ﹇ PRESENTATION FORM FOR VERTICAL LEFT SQUARE BRACKET + [0xFE59] = 1, -- ﹙ SMALL LEFT PARENTHESIS + [0xFE5B] = 1, -- ﹛ SMALL LEFT CURLY BRACKET + [0xFE5D] = 1, -- ﹝ SMALL LEFT TORTOISE SHELL BRACKET + [0xFF08] = 1, -- ( FULLWIDTH LEFT PARENTHESIS + [0xFF3B] = 1, -- [ FULLWIDTH LEFT SQUARE BRACKET + [0xFF5B] = 1, -- { FULLWIDTH LEFT CURLY BRACKET + [0xFF5F] = 1, -- ⦅ FULLWIDTH LEFT WHITE PARENTHESIS + [0xFF62] = 1, -- 「 HALFWIDTH LEFT CORNER BRACKET +} + +-- +-- characters before which linebreak is not allowed +-- (currently, not much differences among the followings) +-- 1: normal chars +-- 2: hangul jamo vowels and trailing consonants +-- 3: kana small letters +-- 0: dashes (supress visible spacing) +-- +local nobr_before = setmetatable({ + [0x21] = 1, -- ! EXCLAMATION MARK + [0x22] = 1, -- " QUOTATION MARK + [0x27] = 1, -- ' APOSTROPHE + [0x29] = 1, -- ) RIGHT PARENTHESIS + [0x2C] = 1, -- , COMMA + [0x2D] = 0, -- - HYPHEN-MINUS + [0x2E] = 1, -- . FULL STOP + [0x2F] = 0, -- / SOLIDUS + [0x3A] = 0, -- : COLON + [0x3B] = 1, -- ; SEMICOLON + [0x3E] = 1, -- > GREATER-THAN SIGN + [0x3F] = 1, -- ? QUESTION MARK + [0x5C] = 0, -- \ REVERSE SOLIDUS + [0x5D] = 1, -- ] RIGHT SQUARE BRACKET + [0x7D] = 1, -- } RIGHT CURLY BRACKET + [0x7E] = 0, -- ~ TILDE + [0xB7] = 1, -- · MIDDLE DOT + [0xBB] = 1, -- » RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK + [0x2013] = 0, -- – EN DASH + [0x2014] = 0, -- — EM DASH + [0x2015] = 1, -- ― HORIZONTAL BAR + [0x2019] = 1, -- ’ RIGHT SINGLE QUOTATION MARK + [0x201D] = 1, -- ” RIGHT DOUBLE QUOTATION MARK + [0x2025] = 1, -- ‥ TWO DOT LEADER + [0x2026] = 1, -- … HORIZONTAL ELLIPSIS + [0x232A] = 1, -- 〉 RIGHT-POINTING ANGLE BRACKET + [0x3001] = 1, -- 、 IDEOGRAPHIC COMMA + [0x3002] = 1, -- 。 IDEOGRAPHIC FULL STOP + [0x3005] = 1, -- 々 IDEOGRAPHIC ITERATION MARK + [0x3009] = 1, -- 〉 RIGHT ANGLE BRACKET + [0x300B] = 1, -- 》 RIGHT DOUBLE ANGLE BRACKET + [0x300D] = 1, -- 」 RIGHT CORNER BRACKET + [0x300F] = 1, -- 』 RIGHT WHITE CORNER BRACKET + [0x3011] = 1, -- 】 RIGHT BLACK LENTICULAR BRACKET + [0x3015] = 1, -- 〕 RIGHT TORTOISE SHELL BRACKET + [0x3017] = 1, -- 〗 RIGHT WHITE LENTICULAR BRACKET + [0x3019] = 1, -- 〙 RIGHT WHITE TORTOISE SHELL BRACKET + [0x301B] = 1, -- 〛 RIGHT WHITE SQUARE BRACKET + [0x301C] = 1, -- 〜 WAVE DASH + [0x301E] = 1, -- 〞 DOUBLE PRIME QUOTATION MARK + [0x301F] = 1, -- 〟 LOW DOUBLE PRIME QUOTATION MARK + [0x3035] = 1, -- 〵 VERTICAL KANA REPEAT MARK LOWER HALF + [0x303B] = 1, -- 〻 VERTICAL IDEOGRAPHIC ITERATION MARK + [0x303C] = 1, -- 〼 MASU MARK + [0x3041] = 3, -- ぁ HIRAGANA LETTER SMALL A + [0x3043] = 3, -- ぃ HIRAGANA LETTER SMALL I + [0x3045] = 3, -- ぅ HIRAGANA LETTER SMALL U + [0x3047] = 3, -- ぇ HIRAGANA LETTER SMALL E + [0x3049] = 3, -- ぉ HIRAGANA LETTER SMALL O + [0x3063] = 3, -- っ HIRAGANA LETTER SMALL TU + [0x3083] = 3, -- ゃ HIRAGANA LETTER SMALL YA + [0x3085] = 3, -- ゅ HIRAGANA LETTER SMALL YU + [0x3087] = 3, -- ょ HIRAGANA LETTER SMALL YO + [0x308E] = 3, -- ゎ HIRAGANA LETTER SMALL WA + [0x3095] = 3, -- ゕ HIRAGANA LETTER SMALL KA + [0x3096] = 3, -- ゖ HIRAGANA LETTER SMALL KE + [0x3099] = 1, -- COMBINING KATAKANA-HIRAGANA VOICED SOUND MARK + [0x309A] = 1, -- COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK + [0x309B] = 1, -- ゛ KATAKANA-HIRAGANA VOICED SOUND MARK + [0x309C] = 1, -- ゜ KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK + [0x309D] = 1, -- ゝ HIRAGANA ITERATION MARK + [0x309E] = 1, -- ゞ HIRAGANA VOICED ITERATION MARK + [0x30A0] = 1, -- ゠ KATAKANA-HIRAGANA DOUBLE HYPHEN + [0x30A1] = 3, -- ァ KATAKANA LETTER SMALL A + [0x30A3] = 3, -- ィ KATAKANA LETTER SMALL I + [0x30A5] = 3, -- ゥ KATAKANA LETTER SMALL U + [0x30A7] = 3, -- ェ KATAKANA LETTER SMALL E + [0x30A9] = 3, -- ォ KATAKANA LETTER SMALL O + [0x30C3] = 3, -- ッ KATAKANA LETTER SMALL TU + [0x30E3] = 3, -- ャ KATAKANA LETTER SMALL YA + [0x30E5] = 3, -- ュ KATAKANA LETTER SMALL YU + [0x30E7] = 3, -- ョ KATAKANA LETTER SMALL YO + [0x30EE] = 3, -- ヮ KATAKANA LETTER SMALL WA + [0x30F5] = 3, -- ヵ KATAKANA LETTER SMALL KA + [0x30F6] = 3, -- ヶ KATAKANA LETTER SMALL KE + [0x30FB] = 1, -- ・ KATAKANA MIDDLE DOT + [0x30FC] = 1, -- ー KATAKANA-HIRAGANA PROLONGED SOUND MARK + [0x30FD] = 1, -- ヽ KATAKANA ITERATION MARK + [0x30FE] = 1, -- ヾ KATAKANA VOICED ITERATION MARK + [0xFE30] = 1, -- ︰ PRESENTATION FORM FOR VERTICAL TWO DOT LEADER + [0xFE31] = 1, -- ︱ PRESENTATION FORM FOR VERTICAL EM DASH + [0xFE32] = 1, -- ︲ PRESENTATION FORM FOR VERTICAL EN DASH + [0xFE36] = 1, -- ︶ PRESENTATION FORM FOR VERTICAL RIGHT PARENTHESIS + [0xFE38] = 1, -- ︸ PRESENTATION FORM FOR VERTICAL RIGHT CURLY BRACKET + [0xFE3A] = 1, -- ︺ PRESENTATION FORM FOR VERTICAL RIGHT TORTOISE SHELL BRACKET + [0xFE3C] = 1, -- ︼ PRESENTATION FORM FOR VERTICAL RIGHT BLACK LENTICULAR BRACKET + [0xFE3E] = 1, -- ︾ PRESENTATION FORM FOR VERTICAL RIGHT DOUBLE ANGLE BRACKET + [0xFE40] = 1, -- ﹀ PRESENTATION FORM FOR VERTICAL RIGHT ANGLE BRACKET + [0xFE42] = 1, -- ﹂ PRESENTATION FORM FOR VERTICAL RIGHT CORNER BRACKET + [0xFE44] = 1, -- ﹄ PRESENTATION FORM FOR VERTICAL RIGHT WHITE CORNER BRACKET + [0xFE48] = 1, -- ﹈ PRESENTATION FORM FOR VERTICAL RIGHT SQUARE BRACKET + [0xFE5A] = 1, -- ﹚ SMALL RIGHT PARENTHESIS + [0xFE5C] = 1, -- ﹜ SMALL RIGHT CURLY BRACKET + [0xFE5E] = 1, -- ﹞ SMALL RIGHT TORTOISE SHELL BRACKET + [0xFF01] = 1, -- ! FULLWIDTH EXCLAMATION MARK + [0xFF09] = 1, -- ) FULLWIDTH RIGHT PARENTHESIS + [0xFF0C] = 1, -- , FULLWIDTH COMMA + [0xFF0E] = 1, -- . FULLWIDTH FULL STOP + [0xFF1A] = 1, -- : FULLWIDTH COLON + [0xFF1B] = 1, -- ; FULLWIDTH SEMICOLON + [0xFF1F] = 1, -- ? FULLWIDTH QUESTION MARK + [0xFF3D] = 1, -- ] FULLWIDTH RIGHT SQUARE BRACKET + [0xFF5D] = 1, -- } FULLWIDTH RIGHT CURLY BRACKET + [0xFF60] = 1, -- ⦆ FULLWIDTH RIGHT WHITE PARENTHESIS + [0xFF61] = 1, -- 。 HALFWIDTH IDEOGRAPHIC FULL STOP + [0xFF63] = 1, -- 」 HALFWIDTH RIGHT CORNER BRACKET + [0xFF64] = 1, -- 、 HALFWIDTH IDEOGRAPHIC COMMA + [0xFF65] = 1, -- ・ HALFWIDTH KATAKANA MIDDLE DOT + [0xFF9E] = 1, -- ゙ HALFWIDTH KATAKANA VOICED SOUND MARK + [0xFF9F] = 1, -- ゚ HALFWIDTH KATAKANA SEMI-VOICED SOUND MARK +}, { __index = function(_,c) + if c >= 0x1160 and c <= 0x11FF then return 2 end + if c >= 0xD7B0 and c <= 0xD7FF then return 2 end + if c >= 0x302A and c <= 0x302F then return 1 end + if c >= 0x31F0 and c <= 0x31FF then return 3 end + if c >= 0xFF67 and c <= 0xFF70 then return 3 end + if c >= 0xFE00 and c <= 0xFE0F then return 1 end + if c >= 0xFE10 and c <= 0xFE19 and not (c == 0xFE17) then return 1 end + if c >= 0xFE50 and c <= 0xFE58 then return 1 end + if c >= 0xE0100 and c <= 0xE01EF then return 1 end + end +}) + +-- +-- whether 'c' is a cjk character +-- +local function is_cjk (c) + return c >= 0xAC00 and c <= 0xD7FF + or c >= 0x1100 and c <= 0x11FF + or c >= 0xA960 and c <= 0xA97F + or c >= 0x2E80 and c <= 0x9FFF + or c >= 0xF900 and c <= 0xFAFF + or c >= 0xFE10 and c <= 0xFE1F + or c >= 0xFE30 and c <= 0xFE6F + or c >= 0xFF00 and c <= 0xFFEF + or c >= 0x1F100 and c <= 0x1F2FF + or c >= 0x20000 and c <= 0x2FA1F + or nobr_after[c] and c > 0x2014 + or nobr_before[c] and c > 0x2014 +end + +-- +-- classify cjk characters +-- 1: openings +-- 2: closings +-- 3: centered chars +-- 4: full stops +-- 5: ellipses +-- 6: exclamation and question marks +-- 0: all others +-- +local charclass = setmetatable({ + [0x2018] = 1, [0x201C] = 1, [0x2329] = 1, [0x3008] = 1, + [0x300A] = 1, [0x300C] = 1, [0x300E] = 1, [0x3010] = 1, + [0x3014] = 1, [0x3016] = 1, [0x3018] = 1, [0x301A] = 1, + [0x301D] = 1, [0xFE17] = 1, [0xFE35] = 1, [0xFE37] = 1, + [0xFE39] = 1, [0xFE3B] = 1, [0xFE3D] = 1, [0xFE3F] = 1, + [0xFE41] = 1, [0xFE43] = 1, [0xFE47] = 1, [0xFF08] = 1, + [0xFF3B] = 1, [0xFF5B] = 1, [0xFF5F] = 1, [0xFF62] = 1, + [0x2019] = 2, [0x201D] = 2, [0x232A] = 2, [0x3001] = 2, + [0x3009] = 2, [0x300B] = 2, [0x300D] = 2, [0x300F] = 2, + [0x3011] = 2, [0x3015] = 2, [0x3017] = 2, [0x3019] = 2, + [0x301B] = 2, [0x301E] = 2, [0x301F] = 2, [0xFE10] = 2, + [0xFE11] = 2, [0xFE18] = 2, [0xFE36] = 2, [0xFE38] = 2, + [0xFE3A] = 2, [0xFE3C] = 2, [0xFE3E] = 2, [0xFE40] = 2, + [0xFE42] = 2, [0xFE44] = 2, [0xFE48] = 2, [0xFF09] = 2, + [0xFF0C] = 2, [0xFF3D] = 2, [0xFF5D] = 2, [0xFF60] = 2, + [0xFF63] = 2, [0xFF64] = 2, [0x00B7] = 3, [0x30FB] = 3, + [0xFF1A] = 3, [0xFF1B] = 3, [0xFF65] = 3, [0x3002] = 4, + [0xFE12] = 4, [0xFF0E] = 4, [0xFF61] = 4, [0x2015] = 5, + [0x2025] = 5, [0x2026] = 5, [0xFE19] = 5, [0xFE30] = 5, + [0xFE31] = 5, [0xFE15] = 6, [0xFE16] = 6, [0xFF01] = 6, + [0xFF1F] = 6, +}, { __index = function() return 0 end }) + +-- +-- table for spacing between char classes +-- 1 stands for 0.5*fontsize when variant=classic +-- +local intercharclass = { [0] = + { [0] = nil, {1,1}, nil, {.5,.5} }, + { [0] = nil, nil, nil, {.5,.5} }, + { [0] = {1,1}, {1,1}, nil, {.5,.5}, nil, {1,1}, {1,1} }, + { [0] = {.5,.5},{.5,.5},{.5,.5},{1,.5}, {.5,.5},{.5,.5},{.5,.5} }, + { [0] = {1,0}, {1,0}, nil, {1.5,.5},nil, {1,0}, {1,0} }, + { [0] = nil, {1,1}, nil, {.5,.5} }, + { [0] = {1,1}, {1,1}, nil, {.5,.5} }, +} + +-- +-- get a new penalty node +-- +local function get_new_penalty (p) + local penalty = node.new("penalty") + penalty.penalty = p + return penalty +end + +-- +-- get a new glue node +-- +local function get_new_glue (...) + local glue = node.new("glue") + node.setglue(glue, ...) + return glue +end + +-- +-- return 0.5*fontsize of given fontid +-- space: true if variant=modern; then 0.5*interword_space +-- +local function get_font_size (fid, space) + local size = font.getparameters(fid) + if space then + size = size and size.space or 196608 + else + size = size and size.quad or 655360 + end + return size/2 +end + +-- +-- charclass 1 thru 4 will be packed in \hbox to 0.5em{\hss? curr \hss?} +-- when variant=classic/modern +-- +local function glyph_to_box (head, curr, class) + local g, h = curr + local size = get_font_size(g.font) + head, curr = node.remove(head, curr) + g.next, g.prev = nil, nil + local hss = get_new_glue(0, 65536, 65536, 2, 2) + if class == 1 then + h, hss.next, g.prev = hss, g, hss + elseif class == 2 or class == 4 then + h, g.next, hss.prev = g, hss, g + else + local hss2 = node.copy(hss) + h, hss.next, g.prev, g.next, hss2.prev = hss, g, hss, hss2, g + end + h = nodes.simple_font_handler(h) + local box = node.hpack(h, size, "exactly") + if curr then + head, curr = node.insert_before(head, curr, box) + else + head, curr = node.insert_after(head, node.tail(head), box) + end + return head, curr +end + +-- +-- insert spacing defined as charclass[a][b] between a and b +-- f: fontid +-- var: variant = plain, classic, modern +-- cc: charclass of current char +-- nc: charclass of next char +-- nobr: linebreak is not allowed +-- +local function insert_cjk_penalty_glue (head, curr, f, var, cc, nc, nobr) + if nobr or cc == 1 or nc > 1 then + local penalty = get_new_penalty(10000) + head, curr = node.insert_after(head, curr, penalty) + end + local factor = get_font_size(f, var == 2) + local t = intercharclass[cc][nc] + local glue = get_new_glue(t[1]*factor, nil, t[2]*factor) + head, curr = node.insert_after(head, curr, glue) + return head, curr +end + +-- +-- insert inter-character spacing in other normal cases +-- f: fontid +-- var: variant = plain, classic, modern +-- x: true between cjk and non-cjk (a little more spacing) +-- +local function insert_penalty_glue (head, curr, f, var, x) + if var ~= 1 then + local penalty = get_new_penalty(50) + head, curr = node.insert_after(head, curr, penalty) + end + local size, glue = get_font_size(f, x and var == 2) + if x then + glue = get_new_glue(size/2, size/4, size/8) + else + glue = get_new_glue(0, size/10, size/50) + end + head, curr = node.insert_after(head, curr, glue) + return head, curr +end + +-- +-- main process for linebreak and inter-character spacing +-- lb: true if pre_linebreak_filter +-- +local function korean_break (head, lb) + local curr = head + while curr do + if curr.id == glyph_id then + local var = node.has_attribute(curr, attr_korean) + if var then + local c, f = curr.char or 0, curr.font or 0 + local cc, cjkc = charclass[c], is_cjk(c) + + -- compress cjk punctuations when charclass is 1 thru 4 + if var > 0 and cc > 0 and cc < 5 then + head, curr = glyph_to_box(head, curr, cc) + end + + local next = curr.next + if next and next.id == glyph_id then + local n = next.char or 0 + local nc = charclass[n] + local nobr = nobr_before[n] or nobr_after[c] + + -- insert spacing as of intercharclass + if var > 0 and intercharclass[cc][nc] then + head, curr = insert_cjk_penalty_glue(head, curr, f, var, cc, nc, nobr) + + -- or insert spacing when linebreak is allowed + elseif not nobr then + local cjkn = is_cjk(n) + + -- if curr or next is cjk char + if cjkc or cjkn then + + -- if between cjk and non-cjk + if var > 0 and not (cjkc and cjkn) and nobr_before[c] ~= 0 then + head, curr = insert_penalty_glue(head, curr, f, var, true) + + -- or under pre_linebreak_filter + elseif lb then + head, curr = insert_penalty_glue(head, curr, f, var) + end + end + end + end + end + end + curr = curr.next + end + return head +end + +-- +-- process for reordering hangul tone marks (U+302E, U+302F) +-- some hangul fonts (eg. Noto CJK) are so designed that hangul tone marks +-- should be moved to the first position of a syllable. +-- Currently, this functionality is not provided by luaotfload. +-- +local function reorder_tm (head) + local curr, tone = node.slide(head) + while curr do + if curr.id == glyph_id and node.has_attribute(curr, attr_korean) then + local c, wd = curr.char or 0, curr.width or 0 + if (c == 0x302E or c == 0x302F) and wd > 0 then + tone = curr + elseif tone and not nobr_before[c] then + head = node.remove(head, tone) + tone.next, tone.prev = nil, nil + head, curr = node.insert_before(head, curr, tone) + tone = nil + end + end + curr = curr.prev + end + return head +end + +-- +-- automatic josa selection +-- +local josa_table = { + -- consonant ㄹ, vowel, other consonants + [0xAC00] = {0xC774, 0xAC00, 0xC774}, -- 가 => 이, 가, 이 + [0xC740] = {0xC740, 0xB294, 0xC740}, -- 은 => 은, 는, 은 + [0xC744] = {0xC744, 0xB97C, 0xC744}, -- 을 => 을, 를, 을 + [0xC640] = {0xACFC, 0xC640, 0xACFC}, -- 와 => 과, 와, 과 + [0xC73C] = {nil, nil, 0xC73C}, -- 으(로) => , , 으 + [0xC774] = {0xC774, nil, 0xC774}, -- 이(라) => 이, , 이 +} + +-- +-- helper function for number-like characters +-- +local function josa_char_num (t, c) + c = c % 10 + 0x30 + return t[c] or 2 +end + +-- +-- decide josa selection +-- +local josa_code = setmetatable({ + [0x30] = 3, [0x31] = 1, [0x33] = 3, [0x36] = 3, [0x37] = 1, + [0x38] = 1, [0x4C] = 1, [0x4D] = 3, [0x4E] = 3, [0x6C] = 1, + [0x6D] = 3, [0x6E] = 3, [0xFB02] = 1, [0xFB04] = 1, +},{ __index = function(t,c) + if c >= 0xAC00 and c <= 0xD7A3 then + c = (c - 0xAC00) % 28 + 0x11A7 + end + if c >= 0x11A8 and c <= 0x11FF then + if c == 0x11AF then return 1 end + return 3 + end + if c >= 0xD7CB and c <= 0xD7FB then return 3 end + if c >= 0x2170 and c <= 0x217F then c = c - 0x10 end + if c >= 0x2160 and c <= 0x216F then + if c >= 0x216C then return 3 end + return josa_char_num(t, c - 0x215F) + end + if c >= 0x2460 and c <= 0x2473 then return josa_char_num(t, c - 0x245F) end + if c >= 0x2474 and c <= 0x2487 then return josa_char_num(t, c - 0x2473) end + if c >= 0x2488 and c <= 0x249B then return josa_char_num(t, c - 0x2487) end + if c >= 0x249C and c <= 0x24B5 then return t[c - 0x249C + 0x61] or 2 end + if c >= 0x24B6 and c <= 0x24CF then return t[c - 0x24B6 + 0x61] or 2 end + if c >= 0x24D0 and c <= 0x24E9 then return t[c - 0x24D0 + 0x61] or 2 end + if c >= 0x3131 and c <= 0x318E then + if c == 0x3139 then return 1 end + if c >= 0x314F and c <= 0x3163 or c >= 0x3187 then return 2 end + return 3 + end + if c >= 0x3260 and c <= 0x327E then c = c - 0x60 end + if c >= 0x3200 and c <= 0x321E then + if c == 0x3203 then return 1 end + if c >= 0x320E then return 2 end + return 3 + end + if c >= 0xFF10 and c <= 0xFF19 then return josa_char_num(t, c - 0xFF10) end + if c >= 0xFF21 and c <= 0xFF3A then return t[c - 0xFF21 + 0x61] or 2 end + if c >= 0xFF41 and c <= 0xFF5A then return t[c - 0xFF41 + 0x61] or 2 end + return 2 + end +}) + +-- +-- obtain char that comes just before the josa +-- +local function get_prev_char (p) + while p do + if p.id == glyph_id then + local pc = p.char or 0 + if not nobr_after[pc] then + if not nobr_before[pc] or nobr_before[pc] >= 2 then + return pc + end + end + elseif p.id == hbox_id or p.id == vbox_id then + local pc = get_prev_char(node.slide(p.head)) + if pc then return pc end + end + p = p.prev + end +end + +-- +-- main process of josa selection +-- +local function auto_josa (head) + local curr, tofree = head, {} + while curr do + if curr.id == glyph_id then + local josa = node.has_attribute(curr, attr_josa) + if josa then + local cc = curr.char or 0 + if josa == 0 then + josa = josa_code[get_prev_char(curr.prev) or 0x30] + end + if cc == 0xC774 then + local n = curr.next + if n and n.char and n.char >= 0xAC00 and n.char <= 0xD7A3 then + else + cc = 0xAC00 + end + end + local new = josa_table[cc] + if new then + cc = new[josa] + if cc then + curr.char = cc + else + head = node.remove(head, curr) + table.insert(tofree, curr) + end + end + node.unset_attribute(curr, attr_josa) + end + end + curr = curr.next + end + for _,v in ipairs(tofree) do node.free(v) end + return head +end + +-- +-- now register to luatex callbacks +-- As char value of glyphs can be changed by opentype GSUB process, +-- we have to occupy the first position among callback functions. +-- +local prepend_to_callback +if luatexbase.base_add_to_callback then + prepend_to_callback = function(name, func, desc) + luatexbase.add_to_callback(name, func, desc, 1) + end +else + prepend_to_callback = function(name, func, desc) + local t = { {func, desc} } + for _,v in ipairs(luatexbase.callback_descriptions(name)) do + table.insert(t, {luatexbase.remove_from_callback(name, v)}) + end + for _,v in ipairs(t) do + luatexbase.add_to_callback(name, v[1], v[2]) + end + end +end + +prepend_to_callback ("pre_linebreak_filter", + function(head) + head = auto_josa(head) + head = korean_break(head, true) + head = reorder_tm(head) + return head + end, + "polyglossia.lang_korean") + +prepend_to_callback ("hpack_filter", + function(head) + head = auto_josa(head) + head = korean_break(head) + head = reorder_tm(head) + return head + end, + "polyglossia.lang_korean") + +-- vim:ft=lua:tw=0:sw=4:ts=4:expandtab |