diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkiv/scrp-cjk.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkiv/scrp-cjk.lua | 1008 |
1 files changed, 1008 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkiv/scrp-cjk.lua b/Master/texmf-dist/tex/context/base/mkiv/scrp-cjk.lua new file mode 100644 index 00000000000..77c58b18a95 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkiv/scrp-cjk.lua @@ -0,0 +1,1008 @@ +if not modules then modules = { } end modules ['scrp-cjk'] = { + version = 1.001, + comment = "companion to scrp-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- We can speed this up by preallocating nodes and copying them but the +-- gain is not that large. + +-- The input line endings: there is no way to distinguish between +-- inline spaces and endofline turned into spaces (would not make +-- sense either because otherwise a wanted space at the end of a +-- line would have to be a hard coded ones. + +local utfchar = utf.getchar + +local nuts = nodes.nuts +local tonut = nodes.tonut +local tonode = nodes.tonode + +local insert_node_after = nuts.insert_after +local insert_node_before = nuts.insert_before +local copy_node = nuts.copy +local remove_node = nuts.remove +local traverse_id = nuts.traverse_id + +local getnext = nuts.getnext +local getprev = nuts.getprev +local getfont = nuts.getfont +local getchar = nuts.getchar +local getid = nuts.getid +local getattr = nuts.getattr +local getsubtype = nuts.getsubtype +local getfield = nuts.getfield + +local setchar = nuts.setchar + +local nodepool = nuts.pool +local new_glue = nodepool.glue +local new_kern = nodepool.kern +local new_penalty = nodepool.penalty + +local nodecodes = nodes.nodecodes +local skipcodes = nodes.skipcodes +local glyph_code = nodecodes.glyph +local glue_code = nodecodes.glue +local userskip_code = skipcodes.userskip +local spaceskip_code = skipcodes.spaceskip +local xspaceskip_code = skipcodes.xspaceskip + +local a_scriptstatus = attributes.private('scriptstatus') +local a_scriptinjection = attributes.private('scriptinjection') + +local categorytonumber = scripts.categorytonumber +local numbertocategory = scripts.numbertocategory +local hash = scripts.hash +local numbertodataset = scripts.numbertodataset + +local fonthashes = fonts.hashes +local fontdata = fonthashes.identifiers +local quaddata = fonthashes.quads +local spacedata = fonthashes.spaces + +local decomposed = characters.hangul.decomposed + +local trace_details = false trackers.register("scripts.details", function(v) trace_details = v end) + +local report_details = logs.reporter("scripts","detail") + +-- raggedleft is controlled by leftskip and we might end up with a situation where +-- the intercharacter spacing interferes with this; the solution is to patch the +-- nodelist but better is to use veryraggedleft + +local inter_char_shrink = 0 +local inter_char_stretch = 0 +local inter_char_half_shrink = 0 +local inter_char_half_stretch = 0 +local inter_char_quarter_shrink = 0 +local inter_char_quarter_stretch = 0 + +local full_char_width = 0 +local half_char_width = 0 +local quarter_char_width = 0 + +local inter_char_hangul_penalty = 0 + +local function set_parameters(font,data) + -- beware: parameters can be nil in e.g. punk variants + local quad = quaddata[font] + full_char_width = quad + half_char_width = quad/2 + quarter_char_width = quad/4 + inter_char_shrink = data.inter_char_shrink_factor * quad + inter_char_stretch = data.inter_char_stretch_factor * quad + inter_char_half_shrink = data.inter_char_half_shrink_factor * quad + inter_char_half_stretch = data.inter_char_half_stretch_factor * quad + inter_char_quarter_shrink = data.inter_char_quarter_shrink_factor * quad + inter_char_quarter_stretch = data.inter_char_quarter_stretch_factor * quad + inter_char_hangul_penalty = data.inter_char_hangul_penalty +end + +-- a test version did compensate for crappy halfwidth but we can best do that +-- at font definition time and/or just assume a correct font + +local function trace_detail(current,what) + local prev = getprev(current) + local c_id = getid(current) + local p_id = prev and getid(prev) + if c_id == glyph_code then + local c_ch = getchar(current) + if p_id == glyph_code then + local p_ch = p_id and getchar(prev) + report_details("[%C %a] [%s] [%C %a]",p_ch,hash[p_ch],what,c_ch,hash[c_ch]) + else + report_details("[%s] [%C %a]",what,c_ch,hash[c_ch]) + end + else + if p_id == glyph_code then + local p_ch = p_id and getchar(prev) + report_details("[%C %a] [%s]",p_ch,hash[p_ch],what) + else + report_details("[%s]",what) + end + end +end + +local function trace_detail_between(p,n,what) + local p_ch = getchar(p) + local n_ch = getchar(n) + report_details("[%C %a] [%s] [%C %a]",p_ch,hash[p_ch],what,n_ch,hash[n_ch]) +end + +local function nobreak(head,current) + if trace_details then + trace_detail(current,"break") + end + insert_node_before(head,current,new_penalty(10000)) +end + +local function stretch_break(head,current) + if trace_details then + trace_detail(current,"stretch break") + end + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function shrink_break(head,current) + if trace_details then + trace_detail(current,"shrink break") + end + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_stretch(head,current) + if trace_details then + trace_detail(current,"no break stretch") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function korean_break(head,current) + if trace_details then + trace_detail(current,"korean break") + end + insert_node_before(head,current,new_penalty(inter_char_hangul_penalty)) +end + +local function nobreak_shrink(head,current) + if trace_details then + trace_detail(current,"nobreak shrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_autoshrink(head,current) + if trace_details then + trace_detail(current,"nobreak autoshrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_stretch_nobreak_shrink(head,current) + if trace_details then + trace_detail(current,"nobreak stretch nobreak shrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_stretch_nobreak_autoshrink(head,current) + if trace_details then + trace_detail(current,"nobreak stretch nobreak autoshrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_shrink_nobreak_stretch(head,current) + if trace_details then + trace_detail(current,"nobreak shrink nobreak stretch") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function nobreak_autoshrink_nobreak_stretch(head,current) + if trace_details then + trace_detail(current,"nobreak autoshrink nobreak stretch") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function nobreak_shrink_break_stretch(head,current) + if trace_details then + trace_detail(current,"nobreak shrink break stretch") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function nobreak_autoshrink_break_stretch(head,current) + if trace_details then + trace_detail(current,"nobreak autoshrink break stretch") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function nobreak_shrink_break_stretch_nobreak_shrink(head,current) + if trace_details then + trace_detail(current,"nobreak shrink break stretch nobreak shrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function japanese_between_full_close_open(head,current) -- todo: check width + if trace_details then + trace_detail(current,"japanese between full close open") + end + insert_node_before(head,current,new_kern(-half_char_width)) + insert_node_before(head,current,new_glue(half_char_width,0,inter_char_half_shrink)) + insert_node_before(head,current,new_kern(-half_char_width)) +end + +local function japanese_between_full_close_full_close(head,current) -- todo: check width + if trace_details then + trace_detail(current,"japanese between full close full close") + end + insert_node_before(head,current,new_kern(-half_char_width)) + -- insert_node_before(head,current,new_glue(half_char_width,0,inter_char_half_shrink)) +end + +local function japanese_before_full_width_punct(head,current) -- todo: check width + if trace_details then + trace_detail(current,"japanese before full width punct") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(quarter_char_width,0,inter_char_quarter_shrink)) + insert_node_before(head,current,new_kern(-quarter_char_width)) +end + +local function japanese_after_full_width_punct(head,current) -- todo: check width + if trace_details then + trace_detail(current,"japanese after full width punct") + end + insert_node_before(head,current,new_kern(-quarter_char_width)) + insert_node_before(head,current,new_glue(quarter_char_width,0,inter_char_quarter_shrink)) +end + +local function nobreak_autoshrink_break_stretch_nobreak_autoshrink(head,current) + if trace_details then + trace_detail(current,"nobreak autoshrink break stretch nobreak autoshrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_autoshrink_break_stretch_nobreak_shrink(head,current) + if trace_details then + trace_detail(current,"nobreak autoshrink break stretch nobreak shrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_shrink_break_stretch_nobreak_autoshrink(head,current) + if trace_details then + trace_detail(current,"nobreak shrink break stretch nobreak autoshrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) +end + +local function nobreak_stretch_break_shrink(head,current) + if trace_details then + trace_detail(current,"nobreak stretch break shrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +local function nobreak_stretch_break_autoshrink(head,current) + if trace_details then + trace_detail(current,"nobreak stretch break autoshrink") + end + insert_node_before(head,current,new_penalty(10000)) + insert_node_before(head,current,new_glue(0,inter_char_stretch,0)) + insert_node_before(head,current,new_glue(0,0,inter_char_half_shrink)) +end + +-- Korean: hangul + +local korean_0 = { +} + +local korean_1 = { + jamo_initial = korean_break, + korean = korean_break, + chinese = korean_break, + hiragana = korean_break, + katakana = korean_break, + half_width_open = stretch_break, + half_width_close = nobreak, + full_width_open = stretch_break, + full_width_close = nobreak, + full_width_punct = nobreak, +-- hyphen = nil, + non_starter = korean_break, + other = korean_break, +} + +local korean_2 = { + jamo_initial = stretch_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = stretch_break, + half_width_close = nobreak, + full_width_open = stretch_break, + full_width_close = nobreak, + full_width_punct = nobreak, +-- hyphen = nil, + non_starter = stretch_break, + other = stretch_break, +} + +local korean_3 = { + jamo_initial = stretch_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = stretch_break, + half_width_close = nobreak, + full_width_open = stretch_break, + full_width_close = nobreak, + full_width_punct = nobreak, +-- hyphen = nil, + non_starter = nobreak, + other = nobreak, +} + +local korean_4 = { + jamo_initial = nobreak, + korean = nobreak, + chinese = nobreak, + hiragana = nobreak, + katakana = nobreak, + half_width_open = nobreak, + half_width_close = nobreak, + full_width_open = nobreak, + full_width_close = nobreak, + full_width_punct = nobreak, + hyphen = nobreak, + non_starter = nobreak, + other = nobreak, +} + +local korean_5 = { + jamo_initial = stretch_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = stretch_break, + half_width_close = nobreak_stretch, + full_width_open = stretch_break, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, + hyphen = nobreak_stretch, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local injectors = { -- [previous] [current] + jamo_final = korean_1, + korean = korean_1, + chinese = korean_1, + hiragana = korean_1, + katakana = korean_1, + hyphen = korean_2, + start = korean_0, + other = korean_2, + non_starter = korean_3, + full_width_open = korean_4, + half_width_open = korean_4, + full_width_close = korean_5, + full_width_punct = korean_5, + half_width_close = korean_5, +} + +local function process(head,first,last) + if first ~= last then + local lastfont, previous, last = nil, "start", nil + while true do + local upcoming, id = getnext(first), getid(first) + if id == glyph_code then + local a = getattr(first,a_scriptstatus) + local current = numbertocategory[a] + local action = injectors[previous] + if action then + action = action[current] + if action then + local font = getfont(first) + if font ~= lastfont then + lastfont = font + set_parameters(font,numbertodataset[getattr(first,a_scriptinjection)]) + end + action(head,first) + end + end + previous = current + else -- glue + local p, n = getprev(first), upcoming + if p and n then + local pid, nid = getid(p), getid(n) + if pid == glyph_code and nid == glyph_code then + local pa, na = getattr(p,a_scriptstatus), getattr(n,a_scriptstatus) + local pcjk, ncjk = pa and numbertocategory[pa], na and numbertocategory[na] + if not pcjk or not ncjk + or pcjk == "korean" or ncjk == "korean" + or pcjk == "other" or ncjk == "other" + or pcjk == "jamo_final" or ncjk == "jamo_initial" then + previous = "start" + else -- if head ~= first then + remove_node(head,first,true) + previous = pcjk + -- else + -- previous = pcjk + end + else + previous = "start" + end + else + previous = "start" + end + end + if upcoming == last then -- was stop + break + else + first = upcoming + end + end + end +end + +scripts.installmethod { + name = "hangul", + injector = process, + datasets = { -- todo: metatables + default = { + inter_char_shrink_factor = 0.50, -- of quad + inter_char_stretch_factor = 0.50, -- of quad + inter_char_half_shrink_factor = 0.50, -- of quad + inter_char_half_stretch_factor = 0.50, -- of quad + inter_char_quarter_shrink_factor = 0.50, -- of quad + inter_char_quarter_stretch_factor = 0.50, -- of quad + inter_char_hangul_penalty = 50, + }, + }, +} + +function scripts.decomposehangul(head) + local head = tonut(head) + local done = false + for current in traverse_id(glyph_code,head) do + local lead_consonant, medial_vowel, tail_consonant = decomposed(getchar(current)) + if lead_consonant then + setchar(current,lead_consonant) + local m = copy_node(current) + setchar(m,medial_vowel) + head, current = insert_node_after(head,current,m) + if tail_consonant then + local t = copy_node(current) + setchar(t,tail_consonant) + head, current = insert_node_after(head,current,t) + end + done = true + end + end + return tonode(head), done +end + +-- nodes.tasks.prependaction("processors","normalizers","scripts.decomposehangul") + +local otffeatures = fonts.constructors.newfeatures("otf") +local registerotffeature = otffeatures.register + +registerotffeature { + name = "decomposehangul", + description = "decompose hangul", + processors = { + position = 1, + node = scripts.decomposehangul, + } +} + +-- Chinese: hanzi + +local chinese_0 = { +} + +local chinese_1 = { + jamo_initial = korean_break, + korean = korean_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local chinese_2 = { + jamo_initial = korean_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, + hyphen = nobreak_stretch, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local chinese_3 = { + jamo_initial = korean_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local chinese_4 = { +-- jamo_initial = nil, +-- korean = nil, +-- chinese = nil, +-- hiragana = nil, +-- katakana = nil, + half_width_open = nobreak_autoshrink, + half_width_close = nil, + full_width_open = nobreak_shrink, + full_width_close = nobreak, + full_width_punct = nobreak, +-- hyphen = nil, + non_starter = nobreak, +-- other = nil, +} + +local chinese_5 = { + jamo_initial = stretch_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local chinese_6 = { + jamo_initial = nobreak_stretch, + korean = nobreak_stretch, + chinese = nobreak_stretch, + hiragana = nobreak_stretch, + katakana = nobreak_stretch, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, + hyphen = nobreak_stretch, + non_starter = nobreak_stretch, + other = nobreak_stretch, +} + +local chinese_7 = { + jami_initial = nobreak_shrink_break_stretch, + korean = nobreak_shrink_break_stretch, + chinese = stretch_break, -- nobreak_shrink_break_stretch, + hiragana = stretch_break, -- nobreak_shrink_break_stretch, + katakana = stretch_break, -- nobreak_shrink_break_stretch, + half_width_open = nobreak_shrink_break_stretch_nobreak_autoshrink, + half_width_close = nobreak_shrink_nobreak_stretch, + full_width_open = nobreak_shrink_break_stretch_nobreak_shrink, + full_width_close = nobreak_shrink_nobreak_stretch, + full_width_punct = nobreak_shrink_nobreak_stretch, + hyphen = nobreak_shrink_break_stretch, + non_starter = nobreak_shrink_break_stretch, + other = nobreak_shrink_break_stretch, +} + +local chinese_8 = { + jami_initial = nobreak_shrink_break_stretch, + korean = nobreak_autoshrink_break_stretch, + chinese = stretch_break, -- nobreak_autoshrink_break_stretch, + hiragana = stretch_break, -- nobreak_autoshrink_break_stretch, + katakana = stretch_break, -- nobreak_autoshrink_break_stretch, + half_width_open = nobreak_autoshrink_break_stretch_nobreak_autoshrink, + half_width_close = nobreak_autoshrink_nobreak_stretch, + full_width_open = nobreak_autoshrink_break_stretch_nobreak_shrink, + full_width_close = nobreak_autoshrink_nobreak_stretch, + full_width_punct = nobreak_autoshrink_nobreak_stretch, + hyphen = nobreak_autoshrink_break_stretch, + non_starter = nobreak_autoshrink_break_stretch, + other = nobreak_autoshrink_break_stretch, +} + +local injectors = { -- [previous] [current] + jamo_final = chinese_1, + korean = chinese_1, + chinese = chinese_2, + hiragana = chinese_2, + katakana = chinese_2, + hyphen = chinese_3, + start = chinese_4, + other = chinese_5, + non_starter = chinese_5, + full_width_open = chinese_6, + half_width_open = chinese_6, + full_width_close = chinese_7, + full_width_punct = chinese_7, + half_width_close = chinese_8, +} + +local function process(head,first,last) + if first ~= last then + local lastfont, previous, last = nil, "start", nil + while true do + local upcoming, id = getnext(first), getid(first) + if id == glyph_code then + local a = getattr(first,a_scriptstatus) + local current = numbertocategory[a] + local action = injectors[previous] + if action then + action = action[current] + if action then + local font = getfont(first) + if font ~= lastfont then + lastfont = font + set_parameters(font,numbertodataset[getattr(first,a_scriptinjection)]) + end + action(head,first) + end + end + previous = current + else -- glue + local p, n = getprev(first), upcoming + if p and n then + local pid, nid = getid(p), getid(n) + if pid == glyph_code and nid == glyph_code then + local pa, na = getattr(p,a_scriptstatus), getattr(n,a_scriptstatus) + local pcjk, ncjk = pa and numbertocategory[pa], na and numbertocategory[na] + if not pcjk or not ncjk + or pcjk == "korean" or ncjk == "korean" + or pcjk == "other" or ncjk == "other" + or pcjk == "jamo_final" or ncjk == "jamo_initial" + or pcjk == "half_width_close" or ncjk == "half_width_open" then -- extra compared to korean + previous = "start" + else -- if head ~= first then + remove_node(head,first,true) + previous = pcjk + -- else + -- previous = pcjk + end + else + previous = "start" + end + else + previous = "start" + end + end + if upcoming == last then -- was stop + break + else + first = upcoming + end + end + end +end + +scripts.installmethod { + name = "hanzi", + injector = process, + datasets = { + default = { + inter_char_shrink_factor = 0.50, -- of quad + inter_char_stretch_factor = 0.50, -- of quad + inter_char_half_shrink_factor = 0.50, -- of quad + inter_char_half_stretch_factor = 0.50, -- of quad + inter_char_quarter_shrink_factor = 0.50, -- of quad + inter_char_quarter_stretch_factor = 0.50, -- of quad + inter_char_hangul_penalty = 50, + }, + }, +} + +-- Japanese: idiographic, hiragana, katakana, romanji / jis + +local japanese_0 = { +} + +local japanese_1 = { + jamo_initial = korean_break, + korean = korean_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local japanese_2 = { + jamo_initial = korean_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = japanese_before_full_width_punct, -- nobreak_stretch, + hyphen = nobreak_stretch, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local japanese_3 = { + jamo_initial = korean_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local japanese_4 = { +-- jamo_initial = nil, +-- korean = nil, +-- chinese = nil, +-- hiragana = nil, +-- katakana = nil, + half_width_open = nobreak_autoshrink, + half_width_close = nil, + full_width_open = nobreak_shrink, + full_width_close = nobreak, + full_width_punct = nobreak, +-- hyphen = nil, + non_starter = nobreak, +-- other = nil, +} + +local japanese_5 = { + jamo_initial = stretch_break, + korean = stretch_break, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, +-- hyphen = nil, + non_starter = nobreak_stretch, + other = stretch_break, +} + +local japanese_6 = { + jamo_initial = nobreak_stretch, + korean = nobreak_stretch, + chinese = nobreak_stretch, + hiragana = nobreak_stretch, + katakana = nobreak_stretch, + half_width_open = nobreak_stretch_break_autoshrink, + half_width_close = nobreak_stretch, + full_width_open = nobreak_stretch_break_shrink, + full_width_close = nobreak_stretch, + full_width_punct = nobreak_stretch, + hyphen = nobreak_stretch, + non_starter = nobreak_stretch, + other = nobreak_stretch, +} + +local japanese_7 = { + jami_initial = nobreak_shrink_break_stretch, + korean = nobreak_shrink_break_stretch, + chinese = japanese_after_full_width_punct, -- stretch_break + hiragana = japanese_after_full_width_punct, -- stretch_break + katakana = japanese_after_full_width_punct, -- stretch_break + half_width_open = nobreak_shrink_break_stretch_nobreak_autoshrink, + half_width_close = nobreak_shrink_nobreak_stretch, + full_width_open = japanese_between_full_close_open, -- !! + full_width_close = japanese_between_full_close_full_close, -- nobreak_shrink_nobreak_stretch, + full_width_punct = nobreak_shrink_nobreak_stretch, + hyphen = nobreak_shrink_break_stretch, + non_starter = nobreak_shrink_break_stretch, + other = nobreak_shrink_break_stretch, +} + +local japanese_8 = { + jami_initial = nobreak_shrink_break_stretch, + korean = nobreak_autoshrink_break_stretch, + chinese = stretch_break, + hiragana = stretch_break, + katakana = stretch_break, + half_width_open = nobreak_autoshrink_break_stretch_nobreak_autoshrink, + half_width_close = nobreak_autoshrink_nobreak_stretch, + full_width_open = nobreak_autoshrink_break_stretch_nobreak_shrink, + full_width_close = nobreak_autoshrink_nobreak_stretch, + full_width_punct = nobreak_autoshrink_nobreak_stretch, + hyphen = nobreak_autoshrink_break_stretch, + non_starter = nobreak_autoshrink_break_stretch, + other = nobreak_autoshrink_break_stretch, +} + +local injectors = { -- [previous] [current] + jamo_final = japanese_1, + korean = japanese_1, + chinese = japanese_2, + hiragana = japanese_2, + katakana = japanese_2, + hyphen = japanese_3, + start = japanese_4, + other = japanese_5, + non_starter = japanese_5, + full_width_open = japanese_6, + half_width_open = japanese_6, + full_width_close = japanese_7, + full_width_punct = japanese_7, + half_width_close = japanese_8, +} + +local function process(head,first,last) + if first ~= last then + local lastfont, previous, last = nil, "start", nil + while true do + local upcoming, id = getnext(first), getid(first) + if id == glyph_code then + local a = getattr(first,a_scriptstatus) + local current = numbertocategory[a] + local action = injectors[previous] + if action then + action = action[current] + if action then + local font = getfont(first) + if font ~= lastfont then + lastfont = font + set_parameters(font,numbertodataset[getattr(first,a_scriptinjection)]) + end + action(head,first) + end + end + previous = current + -- elseif id == math_code then + -- upcoming = getnext(end_of_math(current)) + -- previous = "start" + else -- glue + local p, n = getprev(first), upcoming -- we should remember prev + if p and n then + local pid, nid = getid(p), getid(n) + if pid == glyph_code and nid == glyph_code then + local pa, na = getattr(p,a_scriptstatus), getattr(n,a_scriptstatus) + local pcjk, ncjk = pa and numbertocategory[pa], na and numbertocategory[na] + if not pcjk or not ncjk + or pcjk == "korean" or ncjk == "korean" + or pcjk == "other" or ncjk == "other" + or pcjk == "jamo_final" or ncjk == "jamo_initial" + or pcjk == "half_width_close" or ncjk == "half_width_open" then -- extra compared to korean + previous = "start" + else -- if head ~= first then + if id == glue_code then + -- also scriptstatus check? + local subtype = getsubtype(first) + if subtype == userskip_code or subtype == spaceskip_code or subtype == xspaceskip_code then + -- for the moment no distinction possible between space and userskip + local w = getfield(first,"width") + local s = spacedata[getfont(p)] + if w == s then -- could be option + if trace_details then + trace_detail_between(p,n,"space removed") + end + remove_node(head,first,true) + end + end + end + previous = pcjk + -- else + -- previous = pcjk + end + else + previous = "start" + end + else + previous = "start" + end + end + if upcoming == last then -- was stop + break + else + first = upcoming + end + end + end +end + +scripts.installmethod { + name = "nihongo", -- what name to use? + injector = process, + datasets = { + default = { + inter_char_shrink_factor = 0.50, -- of quad + inter_char_stretch_factor = 0.50, -- of quad + inter_char_half_shrink_factor = 0.50, -- of quad + inter_char_half_stretch_factor = 0.50, -- of quad + inter_char_quarter_shrink_factor = 0.25, -- of quad + inter_char_quarter_stretch_factor = 0.25, -- of quad + inter_char_hangul_penalty = 50, + }, + }, +} |