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|
if not modules then modules = { } end modules ['back-exp'] = {
version = 1.001,
comment = "companion to back-exp.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- language -> only mainlanguage, local languages should happen through start/stoplanguage
-- tocs/registers -> maybe add a stripper (i.e. just don't flush entries in final tree)
-- Because we need to look ahead we now always build a tree (this was optional in
-- the beginning). The extra overhead in the frontend is neglectable.
-- We can consider replacing attributes by the hash entry ... slower
-- in resolving but it's still quite okay.
-- todo: less attributes e.g. internal only first node
-- todo: build xml tree in mem (handy for cleaning)
-- delimited: left/right string (needs marking)
-- we can optimize the code ... currently the overhead is some 10% for xml + html
-- option: pack strings each page so that we save memory
local nodecodes = nodes.nodecodes
local traverse_nodes = node.traverse
local hlist_code = nodecodes.hlist
local vlist_code = nodecodes.vlist
local function locate(start,wantedid,wantedsubtype)
for n in traverse_nodes(start) do
local id = n.id
if id == wantedid then
if not wantedsubtype or n.subtype == wantedsubtype then
return n
end
elseif id == hlist_code or id == vlist_code then
local found = locate(n.list,wantedid,wantedsubtype)
if found then
return found
end
end
end
end
nodes.locate = locate
local next, type = next, type
local format, match, concat, rep, sub, gsub, gmatch = string.format, string.match, table.concat, string.rep, string.sub, string.gsub, string.gmatch
local lpegmatch = lpeg.match
local utfchar, utfbyte, utfsub, utfgsub = utf.char, utf.byte, utf.sub, utf.gsub
local insert, remove = table.insert, table.remove
local trace_export = false trackers.register ("structures.export", function(v) trace_export = v end)
local less_state = false directives.register("structures.export.lessstate", function(v) less_state = v end)
local page_breaks = false directives.register("structures.export.pagebreaks", function(v) page_breaks = v end)
local show_comment = true directives.register("structures.export.comment", function(v) show_comment = v end)
local report_export = logs.reporter("backend","export")
local nodes = nodes
local attributes = attributes
local variables = interfaces.variables
local settings_to_array = utilities.parsers.settings_to_array
local setmetatableindex = table.setmetatableindex
local tasks = nodes.tasks
local fontchar = fonts.hashes.characters
local languagenames = languages.numbers
local nodecodes = nodes.nodecodes
local skipcodes = nodes.skipcodes
local whatsitcodes = nodes.whatsitcodes
local listcodes = nodes.listcodes
local hlist_code = nodecodes.hlist
local vlist_code = nodecodes.vlist
local glyph_code = nodecodes.glyph
local glue_code = nodecodes.glue
local kern_code = nodecodes.kern
local disc_code = nodecodes.disc
local insert_code = nodecodes.insert
local whatsit_code = nodecodes.whatsit
local refximage_code = whatsitcodes.pdfrefximage
local userskip_code = skipcodes.userskip
local rightskip_code = skipcodes.rightskip
local parfillskip_code = skipcodes.parfillskip
local spaceskip_code = skipcodes.spaceskip
local xspaceskip_code = skipcodes.xspaceskip
local line_code = listcodes.line
local a_characters = attributes.private('characters')
local a_exportstatus = attributes.private('exportstatus')
local a_tagged = attributes.private('tagged')
local a_image = attributes.private('image')
local a_taggedalign = attributes.private("taggedalign")
local a_taggedcolumns = attributes.private("taggedcolumns")
local a_taggedrows = attributes.private("taggedrows")
local a_taggedpar = attributes.private("taggedpar")
local a_taggedpacked = attributes.private("taggedpacked")
local a_taggedsymbol = attributes.private("taggedsymbol")
local a_taggedinsert = attributes.private("taggedinsert")
local a_taggedtag = attributes.private("taggedtag")
local a_mathcategory = attributes.private("mathcategory")
local a_mathmode = attributes.private("mathmode")
local a_reference = attributes.private('reference')
local a_textblock = attributes.private("textblock")
local has_attribute = node.has_attribute
local set_attribute = node.set_attribute
local traverse_id = node.traverse_id
local traverse_nodes = node.traverse
local slide_nodelist = node.slide
local texattribute = tex.attribute
local unsetvalue = attributes.unsetvalue
local locate_node = nodes.locate
local references = structures.references
local structurestags = structures.tags
local taglist = structurestags.taglist
local properties = structurestags.properties
local userdata = structurestags.userdata -- might be combines with taglist
local tagdata = structurestags.data
local tagmetadata = structurestags.metadata
local starttiming = statistics.starttiming
local stoptiming = statistics.stoptiming
-- todo: more locals (and optimize)
local exportversion = "0.22"
local nofcurrentcontent = 0 -- so we don't free (less garbage collection)
local currentcontent = { }
local currentnesting = nil
local currentattribute = nil
local last = nil
local currentparagraph = nil
local noftextblocks = 0
local attributehash = { } -- to be considered: set the values at the tex end
local hyphen = utfchar(0xAD) -- todo: also emdash etc
local colonsplitter = lpeg.splitat(":")
local dashsplitter = lpeg.splitat("-")
local threshold = 65536
local indexing = false
local treestack = { }
local nesting = { }
local currentdepth = 0
local tree = { data = { }, depth = 0, fulltag == "root" } -- root
local treeroot = tree
local treehash = { }
local extras = { }
local nofbreaks = 0
local used = { }
local exporting = false
local restart = false
local specialspaces = { [0x20] = " " } -- for conversion
local somespace = { [0x20] = true, [" "] = true } -- for testing
local entities = { ["&"] = "&", [">"] = ">", ["<"] = "<" }
local defaultnature = "mixed" -- "inline"
setmetatableindex(used, function(t,k)
if k then
local v = { }
t[k] = v
return v
end
end)
setmetatableindex(specialspaces, function(t,k)
local v = utfchar(k)
t[k] = v
entities[v] = format("&#%X;",k)
somespace[k] = true
somespace[v] = true
return v
end)
local namespaced = {
-- filled on
}
local namespaces = {
msubsup = "m",
msub = "m",
msup = "m",
mn = "m",
mi = "m",
ms = "m",
mo = "m",
mtext = "m",
mrow = "m",
mfrac = "m",
mroot = "m",
msqrt = "m",
munderover = "m",
munder = "m",
mover = "m",
merror = "m",
math = "m",
mrow = "m",
mtable = "m",
mtr = "m",
mtd = "m",
mfenced = "m",
}
setmetatableindex(namespaced, function(t,k)
if k then
local namespace = namespaces[k]
local v = namespace and namespace .. ":" .. k or k
t[k] = v
return v
end
end)
-- local P, C, Cc = lpeg.P, lpeg.C, lpeg.Cc
--
-- local dash, colon = P("-"), P(":")
--
-- local precolon, predash, rest = P((1-colon)^1), P((1-dash )^1), P(1)^1
--
-- local tagsplitter = C(precolon) * colon * C(predash) * dash * C(rest) +
-- C(predash) * dash * Cc(nil) * C(rest)
local listdata = { }
local function hashlistdata()
local c = structures.lists.collected
for i=1,#c do
local ci = c[i]
local tag = ci.references.tag
if tag then
listdata[ci.metadata.kind .. ":" .. ci.metadata.name .. "-" .. tag] = ci
end
end
end
local spaces = { } -- watch how we also moved the -1 in depth-1 to the creator
setmetatableindex(spaces, function(t,k) local s = rep(" ",k-1) t[k] = s return s end)
function structurestags.setattributehash(fulltag,key,value)
if type(fulltag) == "number" then
fulltag = taglist[fulltag]
if fulltag then
fulltag = fulltag[#fulltag]
end
end
if fulltag then
local ah = attributehash[fulltag] -- could be metatable magic
if not ah then
ah = { }
attributehash[fulltag] = ah
end
ah[key] = value
end
end
properties.vspace = { export = "break", nature = "display" }
properties.pbreak = { export = "pagebreak", nature = "display" }
local function makebreaklist(list)
nofbreaks = nofbreaks + 1
local t = { }
if list then
for i=1,#list do
t[i] = list[i]
end
end
t[#t+1] = "break-" .. nofbreaks -- maybe no number
return t
end
local breakattributes = {
type = "collapse"
}
local function makebreaknode(node) -- maybe no fulltag
nofbreaks = nofbreaks + 1
return {
tg = "break",
fulltag = "break-" .. nofbreaks,
n = nofbreaks,
depth = node.depth,
element = "break",
nature = "display",
-- attributes = breakattributes,
-- data = { }, -- not needed
-- attribute = 0, -- not needed
-- parnumber = 0,
}
end
local fields = { "title", "subtitle", "author", "keywords" }
local function checkdocument(root)
local data = root.data
if data then
for i=1,#data do
local di = data[i]
if type(di) == "table" then
if di.tg == "ignore" then
di.element = ""
else
checkdocument(di)
end
end
end
end
end
function extras.document(result,element,detail,n,fulltag,di)
result[#result+1] = format(" language=%q",languagenames[tex.count.mainlanguagenumber])
if not less_state then
result[#result+1] = format(" file=%q",tex.jobname)
result[#result+1] = format(" date=%q",os.date())
result[#result+1] = format(" context=%q",environment.version)
result[#result+1] = format(" version=%q",exportversion)
result[#result+1] = format(" xmlns:m=%q","http://www.w3.org/1998/Math/MathML")
local identity = interactions.general.getidentity()
for i=1,#fields do
local key = fields[i]
local value = identity[key]
if value and value ~= "" then
result[#result+1] = format(" %s=%q",key,value)
end
end
end
checkdocument(di)
end
local snames, snumbers = { }, { }
function structurestags.setitemgroup(packed,symbol,di)
local s = snumbers[symbol]
if not s then
s = #snames + 1
snames[s], snumbers[symbol] = symbol, s
end
texattribute[a_taggedpacked] = packed and 1 or unsetvalue
texattribute[a_taggedsymbol] = s
end
-- todo: per class
local synonymnames, synonymnumbers = { }, { } -- can be one hash
function structurestags.setsynonym(class,tag)
local s = synonymnumbers[tag]
if not s then
s = #synonymnames + 1
synonymnames[s], synonymnumbers[tag] = tag, s
end
texattribute[a_taggedtag] = s
end
local sortingnames, sortingnumbers = { }, { } -- can be one hash
function structurestags.setsorting(class,tag)
local s = sortingnumbers[tag]
if not s then
s = #sortingnames + 1
sortingnames[s], sortingnumbers[tag] = tag, s
end
texattribute[a_taggedtag] = s
end
local insertids = { }
function structurestags.setdescriptionid(tag,n)
local nd = structures.notes.get(tag,n) -- todo: use listdata instead
if nd then
local r = nd.references
texattribute[a_taggedinsert] = r.internal or unsetvalue
else
texattribute[a_taggedinsert] = unsetvalue
end
end
function extras.descriptiontag(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.insert
v = v and insertids[v]
if v then
result[#result+1] = format(" insert='%s'",v)
end
end
end
function extras.descriptionsymbol(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.insert
v = v and insertids[v]
if v then
result[#result+1] = format(" insert='%s'",v)
end
end
end
function extras.synonym(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.tag
v = v and synonymnames[v]
if v then
result[#result+1] = format(" tag='%s'",v)
end
end
end
function extras.sorting(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.tag
v = v and sortingnames[v]
if v then
result[#result+1] = format(" tag='%s'",v)
end
end
end
function extras.image(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.imageindex
if v then
local figure = img.ofindex(v)
if figure then
local fullname = figure.filepath
local name = file.basename(fullname)
local path = file.dirname(fullname)
local page = figure.page or 1
if name ~= "" then
result[#result+1] = format(" name='%s'",name)
end
if path ~= "" then
result[#result+1] = format(" path='%s'",path)
end
if page > 1 then
result[#result+1] = format(" page='%s'",page)
end
end
end
end
end
-- quite some code deals with exporting references --
local evaluators = { }
local specials = { }
evaluators.inner = function(result,var)
local inner = var.inner
if inner then
result[#result+1] = format(" location='%s'",inner)
end
end
evaluators.outer = function(result,var)
local file, url = references.checkedfileorurl(var.outer,var.outer)
if url then
result[#result+1] = format(" url='%s'",url)
elseif file then
result[#result+1] = format(" file='%s'",file)
end
end
evaluators["outer with inner"] = function(result,var)
local file = references.checkedfile(var.f)
if file then
result[#result+1] = format(" file='%s'",file)
end
local inner = var.inner
if inner then
result[#result+1] = format(" location='%s'",inner)
end
end
evaluators.special = function(result,var)
local handler = specials[var.special]
if handler then
handler(result,var)
end
end
evaluators["special outer with operation"] = evaluators.special
evaluators["special operation"] = evaluators.special
evaluators["special operation with arguments"] = evaluators.special
function specials.url(result,var)
local url = references.checkedurl(var.operation)
if url then
result[#result+1] = format(" url='%s'",url)
end
end
function specials.file(result,var)
local file = references.checkedfile(var.operation)
if file then
result[#result+1] = format(" file='%s'",file)
end
end
function specials.fileorurl(result,var)
local file, url = references.checkedfileorurl(var.operation,var.operation)
if url then
result[#result+1] = format(" url='%s'",url)
elseif file then
result[#result+1] = format(" file='%s'",file)
end
end
function specials.internal(result,var)
local internal = references.checkedurl(var.operation)
if internal then
result[#result+1] = format(" location='aut:%s'",internal)
end
end
local function adddestination(result,references) -- todo: specials -> exporters and then concat
if references then
local reference = references.reference
if reference and reference ~= "" then
local prefix = references.prefix
if prefix and prefix ~= "" then
result[#result+1] = format(" prefix='%s'",prefix)
end
result[#result+1] = format(" destination='%s'",reference)
for i=1,#references do
local r = references[i]
local e = evaluators[r.kind]
if e then
e(result,r)
end
end
end
end
end
local function addreference(result,references)
if references then
local reference = references.reference
if reference and reference ~= "" then
local prefix = references.prefix
if prefix and prefix ~= "" then
result[#result+1] = format(" prefix='%s'",prefix)
end
result[#result+1] = format(" reference='%s'",reference)
end
local internal = references.internal
if internal and internal ~= "" then
result[#result+1] = format(" location='aut:%s'",internal)
end
end
end
function extras.link(result,element,detail,n,fulltag,di)
-- for instance in lists a link has nested elements and no own text
local hash = attributehash[fulltag]
if hash then
local references = hash.reference
if references then
adddestination(result,structures.references.get(references))
end
return true
else
local data = di.data
if data then
for i=1,#data do
local di = data[i]
if di and extras.link(result,element,detail,n,di.fulltag,di) then
return true
end
end
end
end
end
local automathrows = true directives.register("backend.export.math.autorows", function(v) automathrows = v end)
local automathapply = true directives.register("backend.export.math.autoapply", function(v) automathapply = v end)
local automathnumber = true directives.register("backend.export.math.autonumber", function(v) automathnumber = v end)
local automathstrip = true directives.register("backend.export.math.autostrip", function(v) automathstrip = v end)
local functions = mathematics.categories.functions
local function collapse(di,i,data,ndata,detail,element)
local collapsing = di.data
if data then
di.element = element
di.detail = nil
i = i + 1
while i <= ndata do
local dn = data[i]
if dn.detail == detail then
collapsing[#collapsing+1] = dn.data[1]
dn.skip = "ignore"
i = i + 1
else
break
end
end
end
return i
end
local function collapse_mn(di,i,data,ndata)
local collapsing = di.data
if data then
i = i + 1
while i <= ndata do
local dn = data[i]
local tg = dn.tg
if tg == "mn" then
collapsing[#collapsing+1] = dn.data[1]
dn.skip = "ignore"
i = i + 1
elseif tg == "mo" then
local d = dn.data[1]
if d == "." then
collapsing[#collapsing+1] = d
dn.skip = "ignore"
i = i + 1
else
break
end
else
break
end
end
end
return i
end
-- maybe delay __i__ till we need it
local function checkmath(root) -- we can provide utf.toentities as an option
local data = root.data
if data then
local ndata = #data
local roottg = root.tg
if roottg == "msubsup" then
local nucleus, superscript, subscript
for i=1,ndata do
if type(data[i]) == "table" then
if not nucleus then
nucleus = i
elseif not superscript then
superscript = i
elseif not subscript then
subscript = i
else
-- error
end
end
end
if superscript and subscript then
local sup, sub = data[superscript], data[subscript]
data[superscript], data[subscript] = sub, sup
-- sub.__o__, sup.__o__ = subscript, superscript
sub.__i__, sup.__i__ = superscript, subscript
end
elseif roottg == "mfenced" then
local new, n = { }, 0
local attributes = { }
root.attributes = attributes
for i=1,ndata do
local di = data[i]
if type(di) == "table" then
local tg = di.tg
if tg == "mleft" then
attributes.left = tostring(di.data[1].data[1])
elseif tg == "mmiddle" then
attributes.middle = tostring(di.data[1].data[1])
elseif tg == "mright" then
attributes.right = tostring(di.data[1].data[1])
else
n = n + 1
di.__i__ = n
new[n] = di
end
else
n = n + 1
new[n] = di
end
end
root.data = new
ndata = n
end
if ndata == 0 then
return
elseif ndata == 1 then
local d = data[1]
if type(d) ~= "table" then
return -- can be string or false
elseif #root.data == 1 then
local tg = d.tg
if automathrows and roottg == "mrow" then
if tg == "mrow" or tg == "mfenced" or tg == "mfrac" or tg == "mroot" then
root.skip = "comment"
end
elseif roottg == "mo" then
if tg == "mo" then
root.skip = "comment"
end
end
end
end
local i = 1
while i <= ndata do -- -- -- TOO MUCH NESTED CHECKING -- -- --
local di = data[i]
if di and type(di) == "table" then
local tg = di.tg
local detail = di.detail
if tg == "math" then
-- di.element = "mrow" -- when properties
di.skip = "comment"
checkmath(di)
i = i + 1
elseif tg == "mover" or tg == "munder" or tg == "munderover" then
if detail == "accent" then
di.attributes = { accent = "true" }
di.detail = nil
end
checkmath(di)
i = i + 1
elseif tg == "break" then
di.skip = "comment"
i = i + 1
elseif detail then
-- no checkmath(di) here
local category = tonumber(detail) or 0
if category == 1 then -- mo
i = collapse(di,i,data,ndata,detail,"mo")
elseif category == 2 then -- mi
i = collapse(di,i,data,ndata,detail,"mi")
elseif category == 3 then -- mn
i = collapse(di,i,data,ndata,detail,"mn")
elseif category == 4 then -- ms
i = collapse(di,i,data,ndata,detail,"ms")
elseif category >= 1000 then
local apply = category >= 2000
if apply then
category = category - 1000
end
if tg == "mi" then -- function
if root.tg == "mrow" then
root.skip = "comment"
root.element = "function"
end
i = collapse(di,i,data,ndata,detail,"mi")
local tag = functions[category]
if tag then
di.data = { tag }
end
if apply then
di.after = {
{
element = "mo",
-- comment = "apply function",
-- data = { utfchar(0x2061) },
data = { "⁡" },
nature = "mixed",
depth = di.depth,
}
}
elseif automathapply then -- make function
local following
if i <= ndata then
-- normally not the case
following = data[i]
else
local parent = di.__p__ -- == root
if parent.tg == "mrow" then
parent = parent.__p__
end
local index = parent.__i__
following = parent.data[index+1]
end
if following then
local tg = following.tg
if tg == "mrow" or tg == "mfenced" then -- we need to figure out the right condition
di.after = {
{
element = "mo",
-- comment = "apply function",
-- data = { utfchar(0x2061) },
data = { "⁡" },
nature = "mixed",
depth = di.depth,
}
}
end
end
end
else -- some problem
checkmath(di)
i = i + 1
end
else
checkmath(di)
i = i + 1
end
elseif automathnumber and tg == "mn" then
checkmath(di)
i = collapse_mn(di,i,data,ndata)
else
checkmath(di)
i = i + 1
end
else -- can be string or boolean
if parenttg ~= "mtext" and di == " " then
data[i] = false
end
i = i + 1
end
end
end
end
function stripmath(di)
local tg = di.tg
if tg == "mtext" or tg == "ms" then
return di
else
local data = di.data
local ndata = #data
local n = 0
for i=1,ndata do
local di = data[i]
if type(di) == "table" then
di = stripmath(di)
end
if not di or di == " " or di == "" then
-- skip
elseif type(di) == "table" then
n = n + 1
di.__i__ = n
data[n] = di
else
n = n + 1
data[n] = di
end
end
for i=ndata,n+1,-1 do
data[i] = nil
end
if #data > 0 then
return di
end
end
end
function extras.math(result,element,detail,n,fulltag,di)
if di then
local hash = attributehash[di.fulltag]
di.attributes = {
display = (hash and hash.mode) == "display" and "block" or "inline"
}
if automathstrip then
stripmath(di)
end
checkmath(di)
end
end
function extras.section(result,element,detail,n,fulltag,di)
local data = listdata[fulltag]
if data then
addreference(result,data.references)
return true
else
local data = di.data
if data then
for i=1,#data do
local di = data[i]
if di then
local ft = di.fulltag
if ft and extras.section(result,element,detail,n,ft,di) then
return true
end
end
end
end
end
end
function extras.float(result,element,detail,n,fulltag,di)
local data = listdata[fulltag]
if data then
addreference(result,data.references)
return true
else
local data = di.data
if data then
for i=1,#data do
local di = data[i]
if di and extras.section(result,element,detail,n,di.fulltag,di) then
return true
end
end
end
end
end
function extras.itemgroup(result,element,detail,n,fulltag,di)
local data = di.data
if data then
for i=1,#data do
local di = data[i]
if type(di) == "table" and di.tg == "item" then
local ddata = di.data
for i=1,#ddata do
local ddi = ddata[i]
if type(ddi) == "table" then
local tg = ddi.tg
if tg == "itemtag" or tg == "itemcontent" then
local hash = attributehash[ddi.fulltag]
if hash then
local v = hash.packed
if v and v == 1 then
result[#result+1] = " packed='yes'"
end
local v = hash.symbol
if v then
result[#result+1] = format(" symbol='%s'",snames[v])
end
return
end
end
end
end
end
end
end
end
function extras.tablecell(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.align
if not v or v == 0 then
-- normal
elseif v == 1 then
result[#result+1] = " align='flushright'"
elseif v == 2 then
result[#result+1] = " align='middle'"
elseif v == 3 then
result[#result+1] = " align='flushleft'"
end
local v = hash.columns
if v and v > 1 then
result[#result+1] = format(" columns='%s'",v)
end
local v = hash.rows
if v and v > 1 then
result[#result+1] = format(" rows='%s'",v)
end
end
end
function extras.tabulatecell(result,element,detail,n,fulltag,di)
local hash = attributehash[fulltag]
if hash then
local v = hash.align
if not v or v == 0 then
-- normal
elseif v == 1 then
result[#result+1] = " align='flushright'"
elseif v == 2 then
result[#result+1] = " align='middle'"
elseif v == 3 then
result[#result+1] = " align='flushleft'"
end
end
end
-- flusher
local linedone = false -- can go ... we strip newlines anyway
local inlinedepth = 0
local function emptytag(result,element,nature,depth)
if linedone then
result[#result+1] = format("%s<%s/>\n",spaces[depth],namespaced[element])
else
result[#result+1] = format("\n%s<%s/>\n",spaces[depth],namespaced[element])
end
linedone = false
end
local function begintag(result,element,nature,depth,di,skip)
-- if needed we can use a local result with xresult
--~ local result = { }
local detail = di.detail
local n = di.n
local fulltag = di.fulltag
local comment = di.comment
if nature == "inline" then
linedone = false
inlinedepth = inlinedepth + 1
if show_comment and comment then
result[#result+1] = format("<!-- %s -->",comment)
end
elseif nature == "mixed" then
if inlinedepth > 0 then
if show_comment and comment then
result[#result+1] = format("<!-- %s -->",comment)
end
elseif linedone then
result[#result+1] = spaces[depth]
if show_comment and comment then
result[#result+1] = format("<!-- %s -->",comment)
end
else
result[#result+1] = format("\n%s",spaces[depth])
linedone = false
if show_comment and comment then
result[#result+1] = format("<!-- %s -->\n%s",comment,spaces[depth])
end
end
inlinedepth = inlinedepth + 1
else
if inlinedepth > 0 then
if show_comment and comment then
result[#result+1] = format("<!-- %s -->",comment)
end
elseif linedone then
result[#result+1] = spaces[depth]
if show_comment and comment then
result[#result+1] = format("<!-- %s -->",comment)
end
else
result[#result+1] = format("\n%s",spaces[depth]) -- can introduced extra line in mixed+mixed (filtered later on)
linedone = false
if show_comment and comment then
result[#result+1] = format("<!-- %s -->\n%s",comment,spaces[depth])
end
end
end
if skip == "comment" then
if show_comment then
result[#result+1] = format("<!-- begin %s -->",namespaced[element])
end
elseif skip then
-- ignore
else
result[#result+1] = format("<%s",namespaced[element])
if detail then
result[#result+1] = format(" detail=%q",detail)
end
if indexing and n then
result[#result+1] = format(" n=%q",n)
end
local extra = extras[element]
if extra then
extra(result,element,detail,n,fulltag,di)
end
local u = userdata[fulltag]
if u then
for k, v in next, u do
result[#result+1] = format(" %s=%q",k,v)
end
end
local a = di.attributes
if a then
for k, v in next, a do
result[#result+1] = format(" %s=%q",k,v)
end
end
result[#result+1] = ">"
end
if inlinedepth > 0 then
elseif nature == "display" then
result[#result+1] = "\n"
linedone = true
end
--~ xresult[#xresult+1] = concat(result)
used[element][detail or ""] = nature -- for template css
local metadata = tagmetadata[fulltag]
if metadata then
-- used[element] = "mixed"
metadata = table.toxml(metadata,"metadata",true,depth*2,2) -- nobanner
if not linedone then
result[#result+1] = format("\n%s\n",metadata)
else
result[#result+1] = format("%s\n",metadata)
end
linedone = true
end
end
local function endtag(result,element,nature,depth,skip)
if nature == "display" then
if inlinedepth == 0 then
if not linedone then
result[#result+1] = "\n"
end
if skip == "comment" then
if show_comment then
result[#result+1] = format("%s<!-- end %s -->\n",spaces[depth],namespaced[element])
end
elseif skip then
-- ignore
else
result[#result+1] = format("%s</%s>\n",spaces[depth],namespaced[element])
end
linedone = true
else
if skip == "comment" then
if show_comment then
result[#result+1] = format("<!-- end %s -->",namespaced[element])
end
elseif skip then
-- ignore
else
result[#result+1] = format("</%s>",namespaced[element])
end
end
else
inlinedepth = inlinedepth - 1
if skip == "comment" then
if show_comment then
result[#result+1] = format("<!-- end %s -->",namespaced[element])
end
elseif skip then
-- ignore
else
result[#result+1] = format("</%s>",namespaced[element])
end
linedone = false
end
end
local function flushtree(result,data,nature)
local nofdata = #data
for i=1,nofdata do
local di = data[i]
if not di then -- or di == ""
-- collapsed
elseif type(di) == "string" then
di = utfgsub(di,".",entities)
if i == nofdata and sub(di,-1) == "\n" then
if nature == "inline" or nature == "mixed" then
result[#result+1] = sub(di,1,-2)
else
result[#result+1] = sub(di,1,-2)
result[#result+1] = " "
end
else
result[#result+1] = di
end
linedone = false
elseif not di.collapsed then
local element = di.element
if element == "break" or element == "pagebreak" then
emptytag(result,element,nature,di.depth)
elseif element == "" or di.skip == "ignore" then
-- skip
else
if di.before then
flushtree(result,di.before,nature)
end
local nature, depth, skip = di.nature, di.depth, di.skip
begintag(result,element,nature,depth,di,skip)
flushtree(result,di.data,nature)
endtag(result,element,nature,depth,skip)
if di.after then
flushtree(result,di.after,nature)
end
end
end
end
end
-- finalizers
local function checkinserts(data)
local nofinserts = 0
for i=1,#data do
local di = data[i]
if type(di) == "table" then -- id ~= false
if di.element == "descriptionsymbol" then
local hash = attributehash[di.fulltag]
if hash then
local i = hash.insert
if i then
nofinserts = nofinserts + 1
insertids[i] = nofinserts
end
else
-- something is wrong
end
end
local d = di.data
if d then
checkinserts(d)
end
end
end
end
--~ local function collapsetree() -- maybe better traverse tree (par stuff)
--~ for tag, trees in next, treehash do
--~ local d = trees[1].data
--~ if d then
--~ local nd = #d
--~ if nd > 0 then
--~ for i=2,#trees do
--~ local currenttree = trees[i]
--~ local currentdata = currenttree.data
--~ local previouspar = trees[i-1].parnumber
--~ currenttree.collapsed = true
--~ if previouspar == 0 or type(currentdata[1]) ~= "string" then
--~ previouspar = nil -- no need anyway so no further testing needed
--~ end
--~ local done = false
--~ local breakdone = false
--~ local spacedone = false
--~ for j=1,#currentdata do
--~ local cd = currentdata[j]
--~ if not cd then
--~ -- skip
--~ elseif type(cd) == "string" then
--~ if cd == "" then
--~ -- skip
--~ elseif cd == " " then
--~ -- done check ?
--~ if not spacedone and not breakdone then
--~ nd = nd + 1
--~ d[nd] = cd
--~ spacedone = true
--~ end
--~ elseif done then
--~ if not spacedone and not breakdone then
--~ nd = nd + 1
--~ d[nd] = " "
--~ spacedone = true
--~ end
--~ nd = nd + 1
--~ d[nd] = cd
--~ else
--~ done = true
--~ local currentpar = d.parnumber
--~ if not currentpar then
--~ if not spacedone and not breakdone then
--~ nd = nd + 1
--~ d[nd] = " " --
--~ spacedone = true
--~ end
--~ previouspar = nil
--~ elseif not previouspar then
--~ if not spacedone and not breakdone then
--~ nd = nd + 1
--~ d[nd] = " "
--~ spacedone = true
--~ end
--~ previouspar = currentpar
--~ elseif currentpar ~= previouspar then
--~ if not breakdone then
--~ if not spacedone then
--~ nd = nd + 1
--~ end
--~ d[nd] = makebreaknode(currenttree)
--~ breakdone = true
--~ end
--~ previouspar = currentpar
--~ else
--~ spacedone = false
--~ breakdone = false
--~ end
--~ nd = nd + 1
--~ d[nd] = cd
--~ end
--~ else
--~ if cd.tg == "break" then
--~ breakdone = true
--~ end
--~ nd = nd + 1
--~ d[nd] = cd
--~ end
--~ currentdata[j] = false
--~ end
--~ end
--~ end
--~ end
--~ end
--~ end
local function collapsetree() -- maybe better traverse tree (par stuff)
for tag, trees in next, treehash do
local d = trees[1].data
if d then
local nd = #d
if nd > 0 then
for i=2,#trees do
local currenttree = trees[i]
local currentdata = currenttree.data
local previouspar = trees[i-1].parnumber
currenttree.collapsed = true
if previouspar == 0 or type(currentdata[1]) ~= "string" then
previouspar = nil -- no need anyway so no further testing needed
end
for j=1,#currentdata do
local cd = currentdata[j]
if not cd or cd == "" then
-- skip
elseif type(cd) == "string" then
local currentpar = d.parnumber
if not currentpar then
-- add space ?
elseif not previouspar then
-- add space ?
elseif currentpar ~= previouspar then
nd = nd + 1
d[nd] = makebreaknode(currenttree)
end
previouspar = currentpar
nd = nd + 1
d[nd] = cd
else
nd = nd + 1
d[nd] = cd
end
currentdata[j] = false
end
end
end
end
end
end
local function indextree(tree)
local data = tree.data
if data then
for i=1,#data do
local d = data[i]
if type(d) == "table" then
d.__i__ = i
d.__p__ = tree
indextree(d)
end
end
end
end
-- collector code
local function push(fulltag,depth)
local tag, n = lpegmatch(dashsplitter,fulltag)
local tg, detail = lpegmatch(colonsplitter,tag)
local element, nature
if detail then
local pd = properties[tag]
local pt = properties[tg]
element = pd and pd.export or pt and pt.export or tg
nature = pd and pd.nature or pt and pt.nature or defaultnature
else
local p = properties[tg]
element = p and p.export or tg
nature = p and p.nature or "inline"
end
local treedata = tree.data
local t = {
tg = tg,
fulltag = fulltag,
detail = detail,
n = tonumber(n), -- more efficient
depth = depth,
element = element,
nature = nature,
data = { },
attribute = currentattribute,
parnumber = currentparagraph,
}
treedata[#treedata+1] = t
currentdepth = currentdepth + 1
nesting[currentdepth] = fulltag
treestack[currentdepth] = tree
if trace_export then
report_export("%s<%s trigger='%s' index='%s'>",spaces[currentdepth-1],fulltag,currentattribute,#treedata)
end
tree = t
if tg == "break" then
-- no need for this
else
local h = treehash[fulltag]
if h then
h[#h+1] = t
else
treehash[fulltag] = { t }
end
end
end
local function pop()
local top = nesting[currentdepth]
tree = treestack[currentdepth]
currentdepth = currentdepth - 1
if trace_export then
if top then
report_export("%s</%s>",spaces[currentdepth],top)
else
report_export("</%s>",top)
end
end
end
local function continueexport()
if nofcurrentcontent > 0 then
if trace_export then
report_export("%s<!-- injecting pagebreak space -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " " -- pagebreak
end
end
local function pushentry(current)
if current then
if restart then
continueexport()
restart = false
end
local newdepth = #current
local olddepth = currentdepth
if trace_export then
report_export("%s<!-- moving from depth %s to %s (%s) -->",spaces[currentdepth],olddepth,newdepth,current[newdepth])
end
if olddepth <= 0 then
for i=1,newdepth do
push(current[i],i)
end
else
local difference
if olddepth < newdepth then
for i=1,olddepth do
if current[i] ~= nesting[i] then
difference = i
break
end
end
else
for i=1,newdepth do
if current[i] ~= nesting[i] then
difference = i
break
end
end
end
if difference then
for i=olddepth,difference,-1 do
pop()
end
for i=difference,newdepth do
push(current[i],i)
end
elseif newdepth > olddepth then
for i=olddepth+1,newdepth do
push(current[i],i)
end
elseif newdepth < olddepth then
for i=olddepth,newdepth,-1 do
pop()
end
elseif trace_export then
report_export("%s<!-- staying at depth %s (%s) -->",spaces[currentdepth],newdepth,nesting[newdepth] or "?")
end
end
return olddepth, newdepth
end
end
local function pushcontent(addbreak)
if nofcurrentcontent > 0 then
if addbreak then
if currentcontent[nofcurrentcontent] == "\n" then
if trace_export then
report_export("%s<!-- removing newline -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent - 1
end
end
local content = concat(currentcontent,"",1,nofcurrentcontent)
if content == "" then
-- omit; when addbreak we could push, remove spaces, pop
--~ elseif content == " " and addbreak then
elseif somespace[content] and addbreak then
-- omit; when addbreak we could push, remove spaces, pop
else
local olddepth, newdepth
local list = taglist[currentattribute]
if list then
olddepth, newdepth = pushentry(list)
end
local td = tree.data
local nd = #td
td[nd+1] = content
if trace_export then
report_export("%s<!-- start content with length %s -->",spaces[currentdepth],#content)
report_export("%s%s",spaces[currentdepth],content)
report_export("%s<!-- stop content -->",spaces[currentdepth])
end
if olddepth then
for i=newdepth-1,olddepth,-1 do
pop()
end
end
end
nofcurrentcontent = 0
end
if addbreak then
pushentry(makebreaklist(currentnesting))
-- if trace_export then
-- report_export("%s<!-- add break -->",spaces[currentdepth])
-- end
end
end
local function finishexport()
if trace_export then
report_export("%s<!-- start finalizing -->",spaces[currentdepth])
end
if nofcurrentcontent > 0 then
if somespace[currentcontent[nofcurrentcontent]] then
if trace_export then
report_export("%s<!-- removing space -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent - 1
end
pushcontent()
end
for i=currentdepth,1,-1 do
pop()
end
currentcontent = { } -- we're nice and do a cleanup
if trace_export then
report_export("%s<!-- stop finalizing -->",spaces[currentdepth])
end
end
local function collectresults(head,list)
for n in traverse_nodes(head) do
local id = n.id -- 14: image, 8: literal (mp)
if id == glyph_code then
local at = has_attribute(n,a_tagged)
if not at then
-- we need to tag the pagebody stuff as being valid skippable
--
-- report_export("skipping character: 0x%05X %s (no attribute)",n.char,utfchar(n.char))
else
-- we could add tonunicodes for ligatures (todo)
local components = n.components
if components then -- we loose data
collectresults(components,nil)
else
local c = n.char
if last ~= at then
local tl = taglist[at]
if trace_export then
report_export("%s<!-- processing glyph %s (tag %s) -->",spaces[currentdepth],utfchar(c),at)
end
pushcontent()
currentparagraph = has_attribute(n,a_taggedpar)
currentnesting = tl
currentattribute = at
local ah = { -- this includes detail ! -- we can move some to te tex end
align = has_attribute(n,a_taggedalign ),
columns = has_attribute(n,a_taggedcolumns),
rows = has_attribute(n,a_taggedrows ),
packed = has_attribute(n,a_taggedpacked ),
symbol = has_attribute(n,a_taggedsymbol ),
insert = has_attribute(n,a_taggedinsert ),
reference = has_attribute(n,a_reference ),
tag = has_attribute(n,a_taggedtag ), -- used for synonyms
}
if next(ah) then
attributehash[tl[#tl]] = ah
end
last = at
pushentry(currentnesting)
elseif last then
local at = has_attribute(n,a_taggedpar)
if at ~= currentparagraph then
-- inject break
pushcontent(true) -- add break
pushentry(currentnesting)
currentattribute = last
currentparagraph = at
end
if trace_export then
report_export("%s<!-- processing glyph %s (tag %s) -->",spaces[currentdepth],utfchar(c),last)
end
else
if trace_export then
report_export("%s<!-- processing glyph %s (tag %s) -->",spaces[currentdepth],utfchar(c),at)
end
end
local s = has_attribute(n,a_exportstatus)
if s then
c = s
end
if c == 0 then
if trace_export then
report_export("%s<!-- skipping last glyph -->",spaces[currentdepth])
end
-- skip
--~ elseif c == 0x26 then
--~ nofcurrentcontent = nofcurrentcontent + 1
--~ currentcontent[nofcurrentcontent] = "&"
--~ if trace_export then
--~ report_export("%s<!-- turning last glyph into entity &-->",spaces[currentdepth])
--~ end
--~ elseif c == 0x3E then
--~ nofcurrentcontent = nofcurrentcontent + 1
--~ currentcontent[nofcurrentcontent] = ">"
--~ if trace_export then
--~ report_export("%s<!-- turning last glyph into entity >-->",spaces[currentdepth])
--~ end
--~ elseif c == 0x3C then
--~ nofcurrentcontent = nofcurrentcontent + 1
--~ currentcontent[nofcurrentcontent] = "<"
--~ if trace_export then
--~ report_export("%s<!-- turning last glyph into entity <-->",spaces[currentdepth])
--~ end
elseif c == 0x20 then
local a = has_attribute(n,a_characters)
nofcurrentcontent = nofcurrentcontent + 1
if a then
if trace_export then
report_export("%s<!-- turning last space into special space U+%05X -->",spaces[currentdepth],a)
end
currentcontent[nofcurrentcontent] = specialspaces[a] -- special space
else
currentcontent[nofcurrentcontent] = " "
end
else
local fc = fontchar[n.font]
if fc then
fc = fc and fc[c]
if fc then
local u = fc.tounicode
if u and u ~= "" then
-- tracing
for s in gmatch(u,"....") do -- is this ok?
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = utfchar(tonumber(s,16))
end
else
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = utfchar(c)
end
else -- weird, happens in hz (we really need to get rid of the pseudo fonts)
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = utfchar(c)
end
else
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = utfchar(c)
end
end
end
end
elseif id == hlist_code or id == vlist_code then
local ai = has_attribute(n,a_image)
if ai then
local at = has_attribute(n,a_tagged)
if nofcurrentcontent > 0 then
pushcontent()
pushentry(currentnesting) -- ??
end
local tl = taglist[at]
local i = locate_node(n,whatsit_code,refximage_code)
if i then
attributehash[tl[#tl]] = { imageindex = i.index }
end
pushentry(tl) -- has an index, todo: flag empty element
if trace_export then
report_export("%s<!-- processing image (tag %s)",spaces[currentdepth],last)
end
last = nil
currentparagraph = nil
else
-- we need to determine an end-of-line
collectresults(n.list,n)
end
elseif id == disc_code then -- probably too late
collectresults(n.replace,nil)
elseif id == glue_code then
-- we need to distinguish between hskips and vskips
local subtype = n.subtype
if subtype == userskip_code then
local ca = has_attribute(n,a_characters)
if ca then
if ca == 0 then
-- skip this one ... already converted special character (node-acc)
else
local a = has_attribute(n,a_tagged)
if somespace[currentcontent[nofcurrentcontent]] then
if trace_export then
report_export("%s<!-- removing space -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent - 1
end
if last ~= a then
pushcontent()
last = a
currentnesting = taglist[last]
pushentry(currentnesting)
currentattribute = last
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = specialspaces[ca] -- utfchar(ca)
if trace_export then
report_export("%s<!-- adding special space/glue (tag %s => %s) -->",spaces[currentdepth],last,a)
end
end
elseif n.spec.width > threshold then
--~ if has_attribute(n,a_textblock) then
--~ -- todo
--~ else
if last and not somespace[currentcontent[nofcurrentcontent]] then
local a = has_attribute(n,a_tagged)
if a == last then
if trace_export then
report_export("%s<!-- injecting spacing 5a -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " "
elseif a then
-- e.g LOGO<space>LOGO
if trace_export then
report_export("%s<!-- processing glue > threshold (tag %s => %s) -->",spaces[currentdepth],last,a)
end
pushcontent()
if trace_export then
report_export("%s<!-- injecting spacing 5b -->",spaces[currentdepth])
end
last = a
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " "
currentnesting = taglist[last]
pushentry(currentnesting)
currentattribute = last
end
end
end
--~ end
elseif subtype == spaceskip_code or subtype == xspaceskip_code then
if not somespace[currentcontent[nofcurrentcontent]] then
if trace_export then
report_export("%s<!-- injecting spacing 7 -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " "
end
elseif subtype == rightskip_code or subtype == parfillskip_code then
if nofcurrentcontent > 0 then -- and n.subtype == line_code then
local r = currentcontent[nofcurrentcontent]
if type(r) == "string" and r ~= " " then
local s = utfsub(r,-1)
if s == hyphen then
currentcontent[nofcurrentcontent] = utfsub(r,1,-2)
elseif s ~= "\n" then
if trace_export then
report_export("%s<!-- injecting newline 1 -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = "\n"
end
end
end
end
elseif id == kern_code then
if n.kern > threshold then
if last and not somespace[currentcontent[nofcurrentcontent]] then
local a = has_attribute(n,a_tagged)
if a == last then
if not somespace[currentcontent[nofcurrentcontent]] then
if trace_export then
report_export("%s<!-- injecting spacing 8 -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " "
end
elseif a then
-- e.g LOGO<space>LOGO
if trace_export then
report_export("%s<!-- processing kern > threshold (tag %s => %s)",spaces[currentdepth],last,a)
end
last = a
pushcontent()
if trace_export then
report_export("%s<!-- injecting spacing 9 -->",spaces[currentdepth])
end
nofcurrentcontent = nofcurrentcontent + 1
currentcontent[nofcurrentcontent] = " "
currentnesting = taglist[last]
pushentry(currentnesting)
currentattribute = last
end
end
end
end
end
end
function nodes.handlers.export(head) -- hooks into the page builder
starttiming(treehash)
if trace_export then
report_export("%s<!-- start flushing page -->",spaces[currentdepth])
end
-- continueexport()
restart = true
collectresults(head)
if trace_export then
report_export("%s<!-- stop flushing page -->",spaces[currentdepth])
end
stoptiming(treehash)
return head, true
end
function builders.paragraphs.tag(head)
noftextblocks = noftextblocks + 1
for n in traverse_id(hlist_code,head) do
local subtype = n.subtype
if subtype == line_code then
set_attribute(n,a_textblock,noftextblocks)
elseif subtype == glue_code or subtype == kern_code then
set_attribute(n,a_textblock,0)
end
end
return false
end
-- wrapper
local displaymapping = {
inline = "inline",
display = "block",
mixed = "inline",
}
local e_template = [[
%s {
display: %s ;
}]]
local d_template = [[
%s[detail=%s] {
display: %s ;
}]]
-- encoding='utf-8'
local xmlpreamble = [[
<?xml version='1.0' encoding='UTF-8' standalone='yes' ?>
<!-- input filename : %- 17s -->
<!-- processing date : %- 17s -->
<!-- context version : %- 17s -->
<!-- exporter version : %- 17s -->
]]
local csspreamble = [[
<?xml-stylesheet type="text/css" href="%s"?>
]]
-- local xhtmlpreamble = [[
-- <!DOCTYPE html PUBLIC
-- "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN"
-- "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd"
-- >
-- ]]
local cssfile, xhtmlfile = nil, nil
directives.register("backend.export.css", function(v) cssfile = v end)
directives.register("backend.export.xhtml",function(v) xhtmlfile = v end)
local function stopexport(v)
starttiming(treehash)
finishexport()
collapsetree(tree)
indextree(tree)
checkinserts(tree.data)
hashlistdata()
if type(v) ~= "string" or v == variables.yes or v == "" then
v = tex.jobname
end
local xmlfile = file.addsuffix(v,"export")
if type(cssfile) ~= "string" or cssfile == "" then
cssfile = nil
end
local files = { }
local specification = {
name = file.removesuffix(v),
identifier = os.uuid(),
files = files,
}
report_export("saving xml data in '%s",xmlfile)
local results = { }
results[#results+1] = format(xmlpreamble,tex.jobname,os.date(),environment.version,exportversion)
if cssfile then
local cssfiles = settings_to_array(cssfile)
for i=1,#cssfiles do
local cssfile = cssfiles[i]
files[#files+1] = cssfile
if type(cssfile) ~= "string" or cssfile == variables.yes or cssfile == "" or cssfile == xmlfile then
cssfile = file.replacesuffix(xmlfile,"css")
else
cssfile = file.addsuffix(cssfile,"css")
end
report_export("adding css reference '%s",cssfile)
results[#results+1] = format(csspreamble,cssfile)
end
end
-- collect tree
local result = { }
flushtree(result,tree.data)
result = concat(result)
result = gsub(result,"\n *\n","\n")
results[#results+1] = result
results = concat(results)
-- if needed we can do a cleanup of the tree (no need to load for xhtml then)
-- write to file
io.savedata(xmlfile,results)
-- css template file
if cssfile then
local cssfile = file.replacesuffix(xmlfile,"template")
report_export("saving css template in '%s",cssfile)
local templates = { format("/* template for file %s */",xmlfile) }
for element, details in table.sortedhash(used) do
templates[#templates+1] = format("/* category: %s */",element)
for detail, nature in table.sortedhash(details) do
local d = displaymapping[nature or "display"] or "block"
if detail == "" then
templates[#templates+1] = format(e_template,element,d)
else
templates[#templates+1] = format(d_template,element,detail,d)
end
end
end
io.savedata(cssfile,concat(templates,"\n\n"))
end
-- xhtml references
if xhtmlfile then
-- messy
if type(v) ~= "string" or xhtmlfile == true or xhtmlfile == variables.yes or xhtmlfile == "" or xhtmlfile == xmlfile then
xhtmlfile = file.replacesuffix(xmlfile,"xhtml")
else
xhtmlfile = file.addsuffix(xhtmlfile,"xhtml")
end
report_export("saving xhtml variant in '%s",xhtmlfile)
-- local xmltree = xml.load(xmlfile)
local xmltree = xml.convert(results)
if xmltree then
local xmlwrap = xml.wrap
for e in xml.collected(xmltree,"/document") do
e.at["xmlns:xhtml"] = "http://www.w3.org/1999/xhtml"
break
end
-- todo: inject xhtmlpreamble (xmlns should have be enough)
local wrapper = { tg = "a", ns = "xhtml", at = { href = "unknown" } }
for e in xml.collected(xmltree,"link") do
local location = e.at.location
if location then
wrapper.at.href = "#" .. gsub(location,":","_")
xmlwrap(e,wrapper)
end
end
local wrapper = { tg = "a", ns = "xhtml", at = { name = "unknown" } }
for e in xml.collected(xmltree,"!link[@location]") do
local location = e.at.location
if location then
wrapper.at.name = gsub(location,":","_")
xmlwrap(e,wrapper)
end
end
xml.save(xmltree,xhtmlfile)
end
files[#files+1] = xhtmlfile
specification.root = xhtmlfile
local specfile = file.replacesuffix(xmlfile,"specification")
report_export("saving specification in '%s' (mtxrun --script epub --make %s)",specfile,specfile)
io.savedata(specfile,table.serialize(specification,true))
end
stoptiming(treehash)
end
local appendaction = nodes.tasks.appendaction
local enableaction = nodes.tasks.enableaction
local function startexport(v)
if v and not exporting then
report_export("enabling export to xml")
-- not yet known in task-ini
appendaction("shipouts", "normalizers", "nodes.handlers.export")
-- enableaction("shipouts","nodes.handlers.export")
--
enableaction("shipouts","nodes.handlers.accessibility")
enableaction("math", "noads.handlers.tags")
--~ enableaction("finalizers","builders.paragraphs.tag")
luatex.registerstopactions(function() stopexport(v) end)
exporting = true
end
end
directives.register("backend.export",startexport) -- maybe .name
statistics.register("xml exporting time", function()
if exporting then
return format("%s seconds, version %s", statistics.elapsedtime(treehash),exportversion)
end
end)
commands.settagitemgroup = structurestags.setitemgroup
commands.settagsynonym = structurestags.setsynonym
commands.settagsorting = structurestags.setsorting
commands.settagdescriptionid = structurestags.setdescriptionid
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