diff options
Diffstat (limited to 'tex/context/base/x-mathml.lua')
| -rw-r--r-- | tex/context/base/x-mathml.lua | 75 |
1 files changed, 51 insertions, 24 deletions
diff --git a/tex/context/base/x-mathml.lua b/tex/context/base/x-mathml.lua index 5a60fab52..a0db339bc 100644 --- a/tex/context/base/x-mathml.lua +++ b/tex/context/base/x-mathml.lua @@ -6,16 +6,18 @@ if not modules then modules = { } end modules ['x-mathml'] = { license = "see context related readme files" } --- This needs an upgrade to the latest greatest mechanisms. +-- This needs an upgrade to the latest greatest mechanisms. But ... it +-- probably doesn't pay back as no mathml support ever did. local type, next = type, next local formatters, lower, find, gsub, match = string.formatters, string.lower, string.find, string.gsub, string.match local strip = string.strip -local xmlsprint, xmlcprint, xmltext, xmlcontent = xml.sprint, xml.cprint, xml.text, xml.content -local lxmlcollected = lxml.collected +local xmlsprint, xmlcprint, xmltext, xmlcontent, xmlempty = xml.sprint, xml.cprint, xml.text, xml.content, xml.empty +local lxmlcollected, lxmlfilter = lxml.collected, lxml.filter local getid = lxml.getid -local utfchar, utfcharacters, utfvalues = utf.char, utf.characters, utf.values +local utfchar, utfcharacters, utfvalues, utfsplit, utflen = utf.char, utf.characters, utf.values, utf.split, utf.len local lpegmatch, lpegpatterns = lpeg.match, lpeg.patterns +local P, Cs = lpeg.P, lpeg.Cs local mathml = { } moduledata.mathml = mathml @@ -502,20 +504,39 @@ function mathml.stripped(str) context(strip(str)) end +local p_entity = (P("&") * ((1-P(";"))^0) * P(";")) +local p_utfchar = lpegpatterns.utf8character +local p_spacing = lpegpatterns.whitespace^1 + +local p_mn = Cs((p_entity/"" + p_spacing/utfchar(0x205F) + p_utfchar/n_replacements)^0) +local p_strip = Cs((p_entity/"" + p_utfchar )^0) +local p_mi = Cs((p_entity/"" + p_utfchar/i_replacements)^0) + +-- function mathml.mn(id,pattern) +-- -- maybe at some point we need to interpret the number, but +-- -- currently we assume an upright font +-- local str = xmlcontent(getid(id)) or "" +-- local rep = gsub(str,"&.-;","") +-- local rep = gsub(rep,"(%s+)",utfchar(0x205F)) -- medspace e.g.: twenty one (nbsp is not seen) +-- local rep = gsub(rep,".",n_replacements) +-- ctx_mn(rep) +-- end + function mathml.mn(id,pattern) -- maybe at some point we need to interpret the number, but -- currently we assume an upright font - local str = xmlcontent(getid(id)) or "" - local rep = gsub(str,"&.-;","") - local rep = gsub(rep,"(%s+)",utfchar(0x205F)) -- medspace e.g.: twenty one (nbsp is not seen) - local rep = gsub(rep,".",n_replacements) - ctx_mn(rep) + ctx_mn(lpegmatch(p_mn,xmlcontent(getid(id)) or "")) end +-- function mathml.mo(id) +-- local str = xmlcontent(getid(id)) or "" +-- local rep = gsub(str,"&.-;","") -- todo +-- context(simpleoperatorremapper(rep) or rep) +-- end + function mathml.mo(id) - local str = xmlcontent(getid(id)) or "" - local rep = gsub(str,"&.-;","") -- todo - context(simpleoperatorremapper(rep) or rep) + local str = lpegmatch(p_strip,xmlcontent(getid(id)) or "") + context(simpleoperatorremapper(str) or str) end function mathml.mi(id) @@ -529,11 +550,13 @@ function mathml.mi(id) elseif n == 1 then local first = str[1] if type(first) == "string" then - local str = gsub(first,"&.-;","") -- bah - local rep = i_replacements[str] - if not rep then - rep = gsub(str,".",i_replacements) - end + -- local str = gsub(first,"&.-;","") -- bah + -- local rep = i_replacements[str] + -- if not rep then + -- rep = gsub(str,".",i_replacements) + -- end + local str = lpegmatch(p_strip,first) + local rep = i_replacements[str] or lpegmatch(p_mi,str) context(rep) -- ctx_mi(rep) else @@ -549,8 +572,12 @@ end function mathml.mfenced(id) -- multiple separators id = getid(id) - local left, right, separators = id.at.open or "(", id.at.close or ")", id.at.separators or "," - local l, r = l_replacements[left], r_replacements[right] + local at = id.at + local left = at.open or "(" + local right = at.close or ")" + local separators = at.separators or "," + local l = l_replacements[left] + local r = r_replacements[right] ctx_enabledelimiter() if l then context(l_replacements[left] or o_replacements[left] or "") @@ -559,7 +586,7 @@ function mathml.mfenced(id) -- multiple separators context(left) end ctx_disabledelimiter() - local collected = lxml.filter(id,"/*") -- check the * + local collected = lxmlfilter(id,"/*") -- check the * if collected then local n = #collected if n == 0 then @@ -567,7 +594,7 @@ function mathml.mfenced(id) -- multiple separators elseif n == 1 then xmlsprint(collected[1]) -- to be checked else - local t = utf.split(separators,true) + local t = utfsplit(separators,true) for i=1,n do xmlsprint(collected[i]) -- to be checked if i < n then @@ -667,12 +694,12 @@ function mathml.mcolumn(root) local tag = e.tg if tag == "mi" or tag == "mn" or tag == "mo" or tag == "mtext" then local str = xmltext(e) - str = gsub(str,"&.-;","") + str = lpegmatch(p_strip,str) for s in utfcharacters(str) do m[#m+1] = { tag, s } end if tag == "mn" then - local n = utf.len(str) + local n = utflen(str) if n > numbers then numbers = n end @@ -795,7 +822,7 @@ function mathml.mtable(root) local cca = columnalignments[at.columnalign or (columnaligns and columnaligns[col]) or rca or "center"] or "middle" local cfr = frametypes [at.frame or (frames and frames [col]) or rfr or "none" ] or "off" ctx_bTD { align = formatters["{%s,%s}"](cra,cca), frame = cfr, nx = columnspan, ny = rowspan } - if xml.empty(e,".") then + if xmlempty(e,".") then -- nothing, else hsize max else ctx_startimath() |