diff options
Diffstat (limited to 'tex/context/base/mkiv/font-osd.lua')
| -rw-r--r-- | tex/context/base/mkiv/font-osd.lua | 103 |
1 files changed, 54 insertions, 49 deletions
diff --git a/tex/context/base/mkiv/font-osd.lua b/tex/context/base/mkiv/font-osd.lua index ecf8009f9..f35be2cd1 100644 --- a/tex/context/base/mkiv/font-osd.lua +++ b/tex/context/base/mkiv/font-osd.lua @@ -6,16 +6,6 @@ if not modules then modules = { } end modules ['font-osd'] = { -- script devanag license = "see context related readme files" } --- local experiment1 = false --- local experiment2 = false --- local experiment2b1 = false --- local experiment2b2 = false - --- experiments.register("fonts.indic.experiment1", function(v) experiment1 = v end) --- experiments.register("fonts.indic.experiment2", function(v) experiment2 = v end) --- experiments.register("fonts.indic.experiment2b1", function(v) experiment2b1 = v end) --- experiments.register("fonts.indic.experiment2b2", function(v) experiment2b2 = v end) - -- we need to check nbsphash (context only) -- A few remarks: @@ -1392,16 +1382,13 @@ local function reorder_one(head,start,stop,font,attr,nbspaces) end if reph or vattu then --- print(">>> has reph or vattu") local current = start local cns = nil local done = false while current ~= stop do --- print("\t>>> current ~= stop yet") local c = current local n = getnext(current) if ra[getchar(current)] and halant[getchar(n)] then --- print("\t\t>>> current ra; next halant") c = n n = getnext(n) local b, bn = base, base @@ -1415,7 +1402,6 @@ local function reorder_one(head,start,stop,font,attr,nbspaces) if getstate(current,s_rphf) then -- position Reph (Ra + H) after post-base 'matra' (if any) since these -- become marks on the 'matra', not on the base glyph --- print("\t\t\t>>> ra + halant form → reph") if b ~= current then if current == start then if head == start then @@ -1435,7 +1421,6 @@ local function reorder_one(head,start,stop,font,attr,nbspaces) end elseif cns and getnext(cns) ~= current then -- todo: optimize next -- position below-base Ra (vattu) following the consonants on which it is placed (either the base consonant or one of the pre-base consonants) --- print("\t\t\t>>> ra below base (vattu) → rkrf") local cp = getprev(current) local cnsn = getnext(cns) setlink(cp,n) @@ -1449,17 +1434,14 @@ local function reorder_one(head,start,stop,font,attr,nbspaces) current = getprev(n) end else --- print("\t\t>>> NOT! current ra; next halant") local char = getchar(current) if consonant[char] then --- print("\t\t\t>>> is consonant") cns = current local next = getnext(cns) if halant[getchar(next)] then cns = next end if not vatucache[char] then --- print("\t\t\t\t>>> is in vatucache") next = getnext(cns) while dependent_vowel[getchar(next)] do cns = next @@ -1467,7 +1449,6 @@ local function reorder_one(head,start,stop,font,attr,nbspaces) end end elseif char == c_nbsp then --- print("\t\t\t>>> is nbsp") nbspaces = nbspaces + 1 cns = current local next = getnext(cns) @@ -1936,8 +1917,6 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas reorderreph.coverage = { } -- use local rephbase[font] = { } -- use local --- print("!!!!!! reorder two ") - for i=1,#seqsubset do -- this can be done more efficient, the last test and less getnext @@ -2064,7 +2043,7 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas end end - local current, base, firstcons = start, nil, nil + local current, base, firstcons, subnotafterbase, postnotafterbase = start, nil, nil, nil, nil if getstate(start,s_rphf) then -- if syllable starts with Ra + H and script has 'Reph' then exclude Reph from candidates for base consonants @@ -2125,10 +2104,17 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas end end else -- not Stand Alone cluster --- print("!!!! not standalone cluster") local last = getnext(stop) while current ~= last do -- find base consonant local next = getnext(current) +-- IF PATCHED THEN +-- if current == subpos then +-- subnotafterbase = current +-- end +-- if current == postpos then +-- postnotafterbase = current +-- end +-- END if consonant[getchar(current)] then if not (current ~= stop and next ~= stop and halant[getchar(next)] and getchar(getnext(next)) == c_zwj) then if not firstcons then @@ -2138,6 +2124,14 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas local a = getstate(current) if not (a == s_blwf or a == s_pstf or (a ~= s_rphf and a ~= s_blwf and ra[getchar(current)])) then base = current +-- IF PATCHED THEN +-- if subnotafterbase then +-- subpos = base +-- end +-- if postnotafterbase then +-- postpos = base +-- end +-- END end end end @@ -2195,12 +2189,17 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas end end -- --- print("char: " .. char) --- if not moved[current] and dependent_vowel[char] then - if dependent_vowel[char] then --- print(">>!! dependent vowel") +-- IF PATCHED THEN +-- if dependent_vowel[char] then +-- ELSE + if not moved[current] and dependent_vowel[char] then +-- END if pre_mark[char] then -- or: if before_main or before_half +-- IF PATCHED THEN +-- -- nothing +-- ELSE moved[current] = true +-- END -- can be helper to remove one node local prev, next = getboth(current) setlink(prev,next) @@ -2251,6 +2250,13 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas end elseif above_mark[char] then -- after main consonant +-- IF PATCHED +-- target = subpos +-- if postpos == subpos then +-- postpos = current +-- end +-- subpos = current +-- ELSE target = basepos if subpos == basepos then subpos = current @@ -2259,6 +2265,7 @@ local function reorder_two(head,start,stop,font,attr,nbspaces) -- maybe do a pas postpos = current end basepos = current +-- END elseif below_mark[char] then -- after subjoined consonants target = subpos @@ -2502,12 +2509,16 @@ local function analyze_next_chars_one(c,font,variant) -- skip one dependent vowe if pre_mark[v] and not already_pre_mark then already_pre_mark = true elseif post_mark[v] and not already_post_mark then - if devanagarihash[font].conjuncts == "mixed" then - -- for messy fonts - return c - else - already_post_mark = true - end +-- IF PATCHED THEN +-- already_post_mark = true +-- ELSE + if devanagarihash[font].conjuncts == "mixed" then + -- for messy fonts + return c + else + already_post_mark = true + end +-- END elseif below_mark[v] and not already_below_mark then already_below_mark = true elseif above_mark[v] and not already_above_mark then @@ -2710,10 +2721,6 @@ local function analyze_next_chars_two(c,font) for k=1,#vowels do local v = vowels[k] if pre_mark[v] and not already_pre_mark then --- print(">>> pre_mark") --- if dependent_vowel[v] then --- print(">>>> dependent vowel") --- end already_pre_mark = true elseif above_mark[v] and not already_above_mark then already_above_mark = true @@ -2731,12 +2738,16 @@ local function analyze_next_chars_two(c,font) if pre_mark[v] and not already_pre_mark then already_pre_mark = true elseif post_mark[v] and not already_post_mark then - if devanagarihash[font].conjuncts == "mixed" then - -- for messy fonts - return c - else - already_post_mark = true - end +-- IF PATCHED THEN +-- already_post_mark = true +-- ELSE + if devanagarihash[font].conjuncts == "mixed" then + -- for messy fonts + return c + else + already_post_mark = true + end +-- END elseif below_mark[v] and not already_below_mark then already_below_mark = true elseif above_mark[v] and not already_above_mark then @@ -3068,15 +3079,12 @@ local function method_two(head,font,attr) end end if independent_vowel[char] then --- print("!!>>> independent_vowel") -- vowel-based syllable: [Ra+H]+V+[N]+[<[<ZWJ|ZWNJ>]+H+C|ZWJ+C>]+[{M}+[N]+[H]]+[SM]+[(VD)] current = analyze_next_chars_one(c,font,1) syllableend = current else --- print("!!>>> dependent vowel") local standalone = char == c_nbsp if standalone then --- print("!!>>> standalone") nbspaces = nbspaces + 1 local p = getprev(current) if not p then @@ -3090,12 +3098,10 @@ local function method_two(head,font,attr) end end if standalone then --- print("!!>>>>>>> next standalone") -- Stand Alone cluster (at the start of the word only): #[Ra+H]+NBSP+[N]+[<[<ZWJ|ZWNJ>]+H+C>]+[{M}+[N]+[H]]+[SM]+[(VD)] current = analyze_next_chars_one(c,font,2) syllableend = current elseif consonant[getchar(current)] then --- print("!!>>>>>>> a consonant") -- WHY current INSTEAD OF c ? -- Consonant syllable: {C+[N]+<H+[<ZWNJ|ZWJ>]|<ZWNJ|ZWJ>+H>} + C+[N]+[A] + [< H+[<ZWNJ|ZWJ>] | {M}+[N]+[H]>]+[SM]+[(VD)] current = analyze_next_chars_two(current,font) -- not c ! @@ -3104,7 +3110,6 @@ local function method_two(head,font,attr) end end if syllableend then --- print("!!!>>> syllable end") syllabe = syllabe + 1 local c = syllablestart local n = getnext(syllableend) |