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|
if not modules then modules = { } end modules ['strc-ref'] = {
version = 1.001,
comment = "companion to strc-ref.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format, find, gmatch, match, concat = string.format, string.find, string.gmatch, string.match, table.concat
local lpegmatch = lpeg.match
local texsprint, texwrite, texcount, texsetcount = tex.sprint, tex.write, tex.count, tex.setcount
local allocate, mark = utilities.storage.allocate, utilities.storage.mark
local allocate = utilities.storage.allocate
local trace_referencing = false trackers.register("structures.referencing", function(v) trace_referencing = v end)
local report_references = logs.new("references")
local ctxcatcodes = tex.ctxcatcodes
local variables = interfaces.variables
local constants = interfaces.constants
local settings_to_array = utilities.parsers.settings_to_array
local unsetvalue = attributes.unsetvalue
-- beware, this is a first step in the rewrite (just getting rid of
-- the tuo file); later all access and parsing will also move to lua
-- the useddata and pagedata names might change
-- todo: pack exported data
local structures = structures
local helpers = structures.helpers
local sections = structures.sections
local references = structures.references
local lists = structures.lists
local counters = structures.counters
-- some might become local
references.defined = references.defined or allocate()
local defined = references.defined
local derived = allocate()
local specials = { } -- allocate()
local runners = { } -- allocate()
local internals = allocate()
local exporters = allocate()
local imported = allocate()
local filters = allocate()
local executers = allocate()
local handlers = allocate()
local tobesaved = allocate()
local collected = allocate()
references.derived = derived
references.specials = specials
references.runners = runners
references.internals = internals
references.exporters = exporters
references.imported = imported
references.filters = filters
references.executers = executers
references.handlers = handlers
references.tobesaved = tobesaved
references.collected = collected
storage.register("structures/references/defined", references.defined, "structures.references.defined")
local currentreference = nil
local initializers = { }
local finalizers = { }
function references.registerinitializer(func) -- we could use a token register instead
initializers[#initializers+1] = func
end
function references.registerfinalizer(func) -- we could use a token register instead
finalizers[#finalizers+1] = func
end
local function initializer()
tobesaved = mark(references.tobesaved)
collected = mark(references.collected)
for i=1,#initializers do
initializers[i](tobesaved,collected)
end
end
local function finalizer()
-- tobesaved = mark(references.tobesaved)
for i=1,#finalizers do
finalizers[i](tobesaved)
end
end
if job then
job.register('structures.references.collected', tobesaved, initializer, finalizer)
end
-- todo: delay split till later as in destinations we split anyway
local orders, lastorder = { }, 0
local function setnextorder(kind,name)
lastorder = 0
if kind and name then
local ok = orders[kind]
if not ok then
ok = { }
orders[kind] = ok
end
lastorder = (ok[name] or 0) + 1
ok[name] = lastorder
end
texsetcount("global","locationorder",lastorder)
end
references.setnextorder = setnextorder
function references.setnextinternal(kind,name)
setnextorder(kind,name) -- always incremented with internal
texsetcount("global","locationcount",texcount.locationcount + 1)
end
function references.currentorder(kind,name)
texwrite((orders[kind] and orders[kind][name]) or lastorder)
end
function references.set(kind,prefix,tag,data)
for ref in gmatch(tag,"[^,]+") do
local p, r = match(ref,"^(%-):(.-)$")
if p and r then
prefix, ref = p, r
else
prefix = ""
end
if ref ~= "" then
local pd = tobesaved[prefix]
if not pd then
pd = { }
tobesaved[prefix] = pd
end
pd[ref] = data
texsprint(ctxcatcodes,format("\\dofinish%sreference{%s}{%s}",kind,prefix,ref))
end
end
end
function references.setandgetattribute(kind,prefix,tag,data,view) -- maybe do internal automatically here
references.set(kind,prefix,tag,data)
texcount.lastdestinationattribute = references.setinternalreference(prefix,tag,nil,view) or -0x7FFFFFFF
end
function references.enhance(prefix,tag,spec)
local l = tobesaved[prefix][tag]
if l then
l.references.realpage = texcount.realpageno
end
end
-- this reference parser is just an lpeg version of the tex based one
local result = { }
local lparent, rparent, lbrace, rbrace, dcolon, backslash = lpeg.P("("), lpeg.P(")"), lpeg.P("{"), lpeg.P("}"), lpeg.P("::"), lpeg.P("\\")
local reset = lpeg.P("") / function() result = { } end
local b_token = backslash / function(s) result.has_tex = true return s end
local o_token = 1 - rparent - rbrace - lparent - lbrace
local a_token = 1 - rbrace
local s_token = 1 - lparent - lbrace - lparent - lbrace
local i_token = 1 - lparent - lbrace
local f_token = 1 - lparent - lbrace - dcolon
local outer = (f_token )^1 / function (s) result.outer = s end
local operation = lpeg.Cs((b_token + o_token)^1) / function (s) result.operation = s end
local arguments = lpeg.Cs((b_token + a_token)^0) / function (s) result.arguments = s end
local special = (s_token )^1 / function (s) result.special = s end
local inner = (i_token )^1 / function (s) result.inner = s end
local outer_reference = (outer * dcolon)^0
operation = outer_reference * operation -- special case: page(file::1) and file::page(1)
local optional_arguments = (lbrace * arguments * rbrace)^0
local inner_reference = inner * optional_arguments
local special_reference = special * lparent * (operation * optional_arguments + operation^0) * rparent
local scanner = (reset * outer_reference * (special_reference + inner_reference)^-1 * -1) / function() return result end
--~ function references.analyze(str) -- overloaded
--~ return lpegmatch(scanner,str)
--~ end
function references.split(str)
return lpegmatch(scanner,str or "")
end
--~ print(table.serialize(references.analyze("")))
--~ print(table.serialize(references.analyze("inner")))
--~ print(table.serialize(references.analyze("special(operation{argument,argument})")))
--~ print(table.serialize(references.analyze("special(operation)")))
--~ print(table.serialize(references.analyze("special()")))
--~ print(table.serialize(references.analyze("inner{argument}")))
--~ print(table.serialize(references.analyze("outer::")))
--~ print(table.serialize(references.analyze("outer::inner")))
--~ print(table.serialize(references.analyze("outer::special(operation{argument,argument})")))
--~ print(table.serialize(references.analyze("outer::special(operation)")))
--~ print(table.serialize(references.analyze("outer::special()")))
--~ print(table.serialize(references.analyze("outer::inner{argument}")))
--~ print(table.serialize(references.analyze("special(outer::operation)")))
-- -- -- related to strc-ini.lua -- -- --
references.resolvers = references.resolvers or { }
function references.resolvers.section(var)
local vi = lists.collected[var.i[2]]
if vi then
var.i = vi
var.r = (vi.references and vi.references.realpage) or (vi.pagedata and vi.pagedata.realpage) or 1
else
var.i = nil
var.r = 1
end
end
references.resolvers.float = references.resolvers.section
references.resolvers.description = references.resolvers.section
references.resolvers.formula = references.resolvers.section
references.resolvers.note = references.resolvers.section
function references.resolvers.reference(var)
local vi = var.i[2]
if vi then
var.i = vi
var.r = (vi.references and vi.references.realpage) or (vi.pagedata and vi.pagedata.realpage) or 1
else
var.i = nil
var.r = 1
end
end
local function register_from_lists(collected,derived)
for i=1,#collected do
local entry = collected[i]
local m, r = entry.metadata, entry.references
if m and r then
local prefix, reference = r.referenceprefix or "", r.reference or ""
if reference ~= "" then
local kind, realpage = m.kind, r.realpage
if kind and realpage then
local d = derived[prefix] if not d then d = { } derived[prefix] = d end
local t = { kind, i }
for s in gmatch(reference,"%s*([^,]+)") do
if trace_referencing then
report_references("list entry %s provides %s reference '%s' on realpage %s",i,kind,s,realpage)
end
d[s] = t -- share them
end
end
end
end
end
end
references.registerinitializer(function() register_from_lists(lists.collected,derived) end)
-- urls
references.urls = references.urls or { }
references.urls.data = references.urls.data or { }
local urls = references.urls.data
function references.urls.define(name,url,file,description)
if name and name ~= "" then
urls[name] = { url or "", file or "", description or url or file or ""}
end
end
function references.urls.get(name,method,space) -- method: none, before, after, both, space: yes/no
local u = urls[name]
if u then
local url, file = u[1], u[2]
if file and file ~= "" then
texsprint(ctxcatcodes,url,"/",file)
else
texsprint(ctxcatcodes,url)
end
end
end
function commands.doifurldefinedelse(name)
commands.doifelse(urls[name])
end
-- files
references.files = references.files or { }
references.files.data = references.files.data or { }
local files = references.files.data
function references.files.define(name,file,description)
if name and name ~= "" then
files[name] = { file or "", description or file or ""}
end
end
function references.files.get(name,method,space) -- method: none, before, after, both, space: yes/no
local f = files[name]
if f then
texsprint(ctxcatcodes,f[1])
end
end
function commands.doiffiledefinedelse(name)
commands.doifelse(files[name])
end
-- helpers
function references.checkedfile(whatever) -- return whatever if not resolved
if whatever then
local w = files[whatever]
if w then
return w[1]
else
return whatever
end
end
end
function references.checkedurl(whatever) -- return whatever if not resolved
if whatever then
local w = urls[whatever]
if w then
local u, f = w[1], w[2]
if f and f ~= "" then
return u .. "/" .. f
else
return u
end
else
return whatever
end
end
end
function references.checkedfileorurl(whatever,default) -- return nil, nil if not resolved
if whatever then
local w = files[whatever]
if w then
return w[1], nil
else
local w = urls[whatever]
if w then
local u, f = w[1], w[2]
if f and f ~= "" then
return nil, u .. "/" .. f
else
return nil, u
end
end
end
end
return default
end
-- programs
references.programs = references.programs or { }
references.programs.data = references.programs.data or { }
local programs = references.programs.data
function references.programs.define(name,file,description)
if name and name ~= "" then
programs[name] = { file or "", description or file or ""}
end
end
function references.programs.get(name)
local f = programs[name]
if f then
texsprint(ctxcatcodes,f[1])
end
end
function references.checkedprogram(whatever) -- return whatever if not resolved
if whatever then
local w = programs[whatever]
if w then
return w[1]
else
return whatever
end
end
end
-- shared by urls and files
function references.whatfrom(name)
texsprint(ctxcatcodes,(urls[name] and variables.url) or (files[name] and variables.file) or variables.unknown)
end
--~ function references.from(name)
--~ local u = urls[name]
--~ if u then
--~ local url, file, description = u[1], u[2], u[3]
--~ if description ~= "" then
--~ texsprint(ctxcatcodes,format("\\dofromurldescription{%s}",description))
--~ -- ok
--~ elseif file and file ~= "" then
--~ texsprint(ctxcatcodes,format("\\dofromurlliteral{%s}",url .. "/" .. file))
--~ else
--~ texsprint(ctxcatcodes,format("\\dofromurlliteral{%s}",url))
--~ end
--~ else
--~ local f = files[name]
--~ if f then
--~ local description, file = f[1], f[2]
--~ if description ~= "" then
--~ texsprint(ctxcatcodes,format("\\dofromfiledescription{%s}",description))
--~ else
--~ texsprint(ctxcatcodes,format("\\dofromfileliteral{%s}",file))
--~ end
--~ end
--~ end
--~ end
function references.from(name)
local u = urls[name]
if u then
local url, file, description = u[1], u[2], u[3]
if description ~= "" then
context.dofromurldescription(description)
-- ok
elseif file and file ~= "" then
context.dofromurlliteral(url .. "/" .. file)
else
context.dofromurlliteral(url)
end
else
local f = files[name]
if f then
local description, file = f[1], f[2]
if description ~= "" then
context.dofromfiledescription(description)
else
context.dofromfileliteral(file)
end
end
end
end
-- export
exporters.references = exporters.references or { }
exporters.lists = exporters.lists or { }
function exporters.references.generic(data)
local useddata = {}
local entries, userdata = data.entries, data.userdata
if entries then
for k, v in next, entries do
useddata[k] = v
end
end
if userdata then
for k, v in next, userdata do
useddata[k] = v
end
end
return useddata
end
function exporters.lists.generic(data)
local useddata = { }
local titledata, numberdata = data.titledata, data.numberdata
if titledata then
useddata.title = titledata.title
end
if numberdata then
local numbers = numberdata.numbers
local t = { }
for i=1,#numbers do
local n = numbers[i]
if n ~= 0 then
t[#t+1] = n
end
end
useddata.number = concat(t,".")
end
return useddata
end
local function referencer(data)
local references = data.references
local realpage = references.realpage
local numberdata = jobpages.tobesaved[realpage]
local specification = numberdata.specification
return {
realpage = references.realpage,
number = numberdata.number,
conversion = specification.conversion,
-- prefix = only makes sense when bywhatever
}
end
-- Exported and imported references ... not yet used but don't forget it
-- and redo it.
function references.export(usedname)
local exported = { }
local e_references, e_lists = exporters.references, exporters.lists
local g_references, g_lists = e_references.generic, e_lists.generic
-- todo: pagenumbers
-- todo: some packing
for prefix, references in next, references.tobesaved do
local pe = exported[prefix] if not pe then pe = { } exported[prefix] = pe end
for key, data in next, references do
local metadata = data.metadata
local exporter = e_references[metadata.kind] or g_references
if exporter then
pe[key] = {
metadata = {
kind = metadata.kind,
catcodes = metadata.catcodes,
coding = metadata.coding, -- we can omit "tex"
},
useddata = exporter(data),
pagedata = referencer(data),
}
end
end
end
local pe = exported[""] if not pe then pe = { } exported[""] = pe end
for n, data in next, lists.tobesaved do
local metadata = data.metadata
local exporter = e_lists[metadata.kind] or g_lists
if exporter then
local result = {
metadata = {
kind = metadata.kind,
catcodes = metadata.catcodes,
coding = metadata.coding, -- we can omit "tex"
},
useddata = exporter(data),
pagedata = referencer(data),
}
for key in gmatch(data.references.reference,"[^,]+") do
pe[key] = result
end
end
end
local e = {
references = exported,
version = 1.00,
}
io.savedata(file.replacesuffix(usedname or tex.jobname,"tue"),table.serialize(e,true))
end
function references.import(usedname)
if usedname then
local jdn = imported[usedname]
if not jdn then
local filename = files[usedname]
if filename then -- only registered files
filename = filename[1]
else
filename = usedname
end
local data = io.loaddata(file.replacesuffix(filename,"tue")) or ""
if data == "" then
interfaces.showmessage("references",24,filename)
data = nil
else
data = loadstring(data)
if data then
data = data()
end
if data then
-- version check
end
if not data then
interfaces.showmessage("references",25,filename)
end
end
if data then
interfaces.showmessage("references",26,filename)
jdn = data
jdn.filename = filename
else
jdn = { filename = filename, references = { }, version = 1.00 }
end
imported[usedname] = jdn
imported[filename] = jdn
end
return jdn
else
return nil
end
end
function references.load(usedname)
-- gone
end
function references.define(prefix,reference,list)
local d = defined[prefix] if not d then d = { } defined[prefix] = d end
d[reference] = { "defined", list }
end
--~ function references.registerspecial(name,action,...)
--~ specials[name] = { action, ... }
--~ end
function references.reset(prefix,reference)
local d = defined[prefix]
if d then
d[reference] = nil
end
end
-- \primaryreferencefoundaction
-- \secondaryreferencefoundaction
-- \referenceunknownaction
-- t.special t.operation t.arguments t.outer t.inner
local function resolve(prefix,reference,args,set) -- we start with prefix,reference
texcount.referencehastexstate = 0
if reference and reference ~= "" then
if not set then
set = { prefix = prefix, reference = reference }
else
set.reference = set.reference or reference
set.prefix = set.prefix or prefix
end
local r = settings_to_array(reference)
for i=1,#r do
local ri = r[i]
local dp = defined[prefix] or defined[""]
local d = dp[ri]
if d then
resolve(prefix,d[2],nil,set)
else
local var = lpegmatch(scanner,ri)
if var then
var.reference = ri
if not var.outer and var.inner then
local d = defined[prefix][var.inner] or defined[""][var.inner]
if d then
resolve(prefix,d[2],var.arguments,set) -- args can be nil
else
if args then var.arguments = args end
set[#set+1] = var
end
else
if args then var.arguments = args end
set[#set+1] = var
end
if var.has_tex then
set.has_tex = true
end
else
-- report_references("funny pattern: %s",ri or "?")
end
end
end
if set.has_tex then
texcount.referencehastexstate = 1
end
return set
else
return { }
end
end
-- prefix == "" is valid prefix which saves multistep lookup
references.currentset = nil
local b, e = "\\ctxlua{local jc = structures.references.currentset;", "}"
local o, a = 'jc[%s].operation=[[%s]];', 'jc[%s].arguments=[[%s]];'
function references.expandcurrent() -- todo: two booleans: o_has_tex& a_has_tex
local currentset = references.currentset
if currentset and currentset.has_tex then
local done = false
for i=1,#currentset do
local ci = currentset[i]
local operation = ci.operation
if operation then
if find(operation,"\\") then -- if o_has_tex then
if not done then
texsprint(ctxcatcodes,b)
done = true
end
texsprint(ctxcatcodes,format(o,i,operation))
end
end
local arguments = ci.arguments
if arguments then
if find(arguments,"\\") then -- if a_has_tex then
if not done then
texsprint(ctxcatcodes,b)
done = true
end
texsprint(ctxcatcodes,format(a,i,arguments))
end
end
end
if done then
texsprint(ctxcatcodes,e)
end
end
end
--~ local uo = urls[outer]
--~ if uo then
--~ special, operation, argument = "url", uo[1], inner or uo[2] -- maybe more is needed
--~ else
--~ local fo = files[outer]
--~ if fo then
--~ special, operation, argument = "file", fo[1], inner -- maybe more is needed
--~ end
--~ end
local function identify(prefix,reference)
local set = resolve(prefix,reference)
local bug = false
for i=1,#set do
local var = set[i]
local special, inner, outer, arguments, operation = var.special, var.inner, var.outer, var.arguments, var.operation
if special then
local s = specials[special]
if s then
if outer then
if operation then
-- special(outer::operation)
var.kind = "special outer with operation"
else
-- special()
var.kind = "special outer"
end
var.f = outer
elseif operation then
if arguments then
-- special(operation{argument,argument})
var.kind = "special operation with arguments"
else
-- special(operation)
var.kind = "special operation"
end
else
-- special()
var.kind = "special"
end
else
var.error = "unknown special"
end
elseif outer then
local e = references.import(outer)
if e then
if inner then
local r = e.references
if r then
r = r[prefix]
if r then
r = r[inner]
if r then
if arguments then
-- outer::inner{argument}
var.kind = "outer with inner with arguments"
else
-- outer::inner
var.kind = "outer with inner"
end
var.i = { "reference", r }
references.resolvers.reference(var)
var.f = outer
var.e = true -- external
end
end
end
if not r then
r = e.derived
if r then
r = r[prefix]
if r then
r = r[inner]
if r then
-- outer::inner
if arguments then
-- outer::inner{argument}
var.kind = "outer with inner with arguments"
else
-- outer::inner
var.kind = "outer with inner"
end
var.i = r
references.resolvers[r[1]](var)
var.f = outer
end
end
end
end
if not r then
var.error = "unknown outer"
end
elseif special then
local s = specials[special]
if s then
if operation then
if arguments then
-- outer::special(operation{argument,argument})
var.kind = "outer with special and operation and arguments"
else
-- outer::special(operation)
var.kind = "outer with special and operation"
end
else
-- outer::special()
var.kind = "outer with special"
end
var.f = outer
else
var.error = "unknown outer with special"
end
else
-- outer::
var.kind = "outer"
var.f = outer
end
else
if inner then
if arguments then
-- outer::inner{argument}
var.kind = "outer with inner with arguments"
else
-- outer::inner
var.kind = "outer with inner"
end
var.i = { "reference", inner }
references.resolvers.reference(var)
var.f = outer
elseif special then
local s = specials[special]
if s then
if operation then
if arguments then
-- outer::special(operation{argument,argument})
var.kind = "outer with special and operation and arguments"
else
-- outer::special(operation)
var.kind = "outer with special and operation"
end
else
-- outer::special()
var.kind = "outer with special"
end
var.f = outer
else
var.error = "unknown outer with special"
end
else
-- outer::
var.kind = "outer"
var.f = outer
end
end
else
if arguments then
local s = specials[inner]
if s then
-- inner{argument}
var.kind = "special with arguments"
else
var.error = "unknown inner or special"
end
else
-- inner
--~ local i = tobesaved[prefix]
local i = collected[prefix]
i = i and i[inner]
if i then
var.i = { "reference", i }
references.resolvers.reference(var)
var.kind = "inner"
var.p = prefix
else
i = derived[prefix]
i = i and i[inner]
if i then
var.kind = "inner"
var.i = i
references.resolvers[i[1]](var)
var.p = prefix
else
i = collected[prefix]
i = i and i[inner]
if i then
var.kind = "inner"
var.i = { "reference", i }
references.resolvers.reference(var)
var.p = prefix
else
local s = specials[inner]
if s then
var.kind = "special"
else
i = (collected[""] and collected[""][inner]) or
(derived [""] and derived [""][inner]) or
(tobesaved[""] and tobesaved[""][inner])
if i then
var.kind = "inner"
var.i = { "reference", i }
references.resolvers.reference(var)
var.p = ""
else
var.error = "unknown inner or special"
end
end
end
end
end
end
end
bug = bug or var.error
set[i] = var
end
references.currentset = set
--~ print(bug,table.serialize(set))
return set, bug
end
references.identify = identify
local unknowns, nofunknowns = { }, 0
function references.doifelse(prefix,reference,highlight,newwindow,layer)
local set, bug = identify(prefix,reference)
local unknown = bug or #set == 0
if unknown then
currentreference = nil -- will go away
local str = format("[%s][%s]",prefix,reference)
local u = unknowns[str]
if not u then
interfaces.showmessage("references",1,str) -- 1 = unknown, 4 = illegal
unknowns[str] = 1
nofunknowns = nofunknowns + 1
else
unknowns[str] = u + 1
end
else
set.highlight, set.newwindow,set.layer = highlight, newwindow, layer
currentreference = set[1]
end
-- we can do the expansion here which saves a call
commands.doifelse(not unknown)
end
function references.reportproblems() -- might become local
if nofunknowns > 0 then
interfaces.showmessage("references",5,nofunknowns) -- 5 = unknown, 6 = illegal
-- -- we need a proper logger specific for the log file
-- texio.write_nl("log",format("%s unknown references",nofunknowns))
-- for k, v in table.sortedpairs(unknowns) do
-- texio.write_nl("log",format("%s (n=%s)",k,v))
-- end
-- texio.write_nl("log","")
end
end
luatex.registerstopactions(references.reportproblems)
local innermethod = "names"
function references.setinnermethod(m)
if m then
if m == "page" or m == "mixed" or m == "names" then
innermethod = m
elseif m == true or m == variables.yes then
innermethod = "page"
end
end
function references.setinnermethod()
report_references("inner method is already set and frozen to '%s'",innermethod)
end
end
function references.getinnermethod()
return innermethod or "names"
end
directives.register("references.linkmethod", function(v) -- page mixed names
references.setinnermethod(v)
end)
function references.setinternalreference(prefix,tag,internal,view)
if innermethod == "page" then
return unsetvalue
else
local t = { } -- maybe add to current
if tag then
if prefix and prefix ~= "" then
prefix = prefix .. ":"
for ref in gmatch(tag,"[^,]+") do
t[#t+1] = prefix .. ref
end
else
for ref in gmatch(tag,"[^,]+") do
t[#t+1] = ref
end
end
end
if internal and innermethod == "names" then -- mixed or page
t[#t+1] = "aut:" .. internal
end
local destination = references.mark(t,nil,nil,view) -- returns an attribute
texcount.lastdestinationattribute = destination
return destination
end
end
function references.getinternalreference(n) -- n points into list (todo: registers)
local l = lists.collected[n]
texsprint(ctxcatcodes,(l and l.references.internal) or n)
end
--
function references.getcurrentmetadata(tag)
local data = currentreference and currentreference.i
data = data and data.metadata and data.metadata[tag]
if data then
texsprint(ctxcatcodes,data)
end
end
local function currentmetadata(tag)
local data = currentreference and currentreference.i
return data and data.metadata and data.metadata[tag]
end
references.currentmetadata = currentmetadata
function references.getcurrentprefixspec(default) -- todo: message
texsprint(ctxcatcodes,"\\getreferencestructureprefix{",
currentmetadata("kind") or "?", "}{", currentmetadata("name") or "?", "}{", default or "?", "}")
end
--~ function references.getcurrentprefixspec(default) -- we can consider storing the data at the lua end
--~ context.getreferencestructureprefix(currentmetadata("kind"),currentmetadata("name"),default)
--~ end
--
function references.filter(name,...) -- number page title ...
local data = currentreference and currentreference.i
if data then
local kind = data.metadata and data.metadata.kind
if kind then
local filter = filters[kind] or filters.generic
filter = filter and (filter[name] or filter.unknown or filters.generic[name] or filters.generic.unknown)
if filter then
if trace_referencing then
report_references("name '%s', kind '%s', using dedicated filter",name,kind)
end
filter(data,name,...)
elseif trace_referencing then
report_references("name '%s', kind '%s', using generic filter",name,kind)
end
elseif trace_referencing then
report_references("name '%s', unknown kind",name)
end
elseif trace_referencing then
report_references("name '%s', no reference",name)
end
end
filters.generic = { }
function filters.generic.title(data)
if data then
local titledata = data.titledata or data.useddata
if titledata then
helpers.title(titledata.title or "?",data.metadata)
end
end
end
function filters.generic.text(data)
if data then
local entries = data.entries or data.useddata
if entries then
helpers.title(entries.text or "?",data.metadata)
end
end
end
function filters.generic.number(data,what,prefixspec) -- todo: spec and then no stopper
if data then
local numberdata = data.numberdata
if numberdata then
--~ print(table.serialize(prefixspec))
helpers.prefix(data,prefixspec)
sections.typesetnumber(numberdata,"number",numberdata)
else
local useddata = data.useddata
if useddata and useddsta.number then
tex.sprint(tex.ctxcatcodes,useddata.number)
end
end
end
end
filters.generic.default = filters.generic.text
function filters.generic.page(data,prefixspec,pagespec)
local pagedata = data.pagedata
if pagedata then -- imported
local number, conversion = pagedata.number, pagedata.conversion
if not number then
-- error
elseif conversion then
tex.sprint(tex.ctxcatcodes,format("\\convertnumber{%s}{%s}",conversion,number))
else
tex.sprint(tex.ctxcatcodes,number)
end
else
helpers.prefixpage(data,prefixspec,pagespec)
end
end
filters.user = { }
function filters.user.unknown(data,name)
if data then
local userdata = data.userdata
local userkind = userdata and userdata.kind
if userkind then
local filter = filters[userkind] or filters.generic
filter = filter and (filter[name] or filter.unknown)
if filter then
filter(data,name)
return
end
end
local namedata = userdata and userdata[name]
if namedata then
texsprint(ctxcatcodes,namedata)
end
end
end
filters.text = { }
function filters.text.title(data)
-- texsprint(ctxcatcodes,"[text title]")
helpers.title(data.entries.text or "?",data.metadata)
end
function filters.text.number(data)
-- texsprint(ctxcatcodes,"[text number]")
helpers.title(data.entries.text or "?",data.metadata)
end
function filters.text.page(data,prefixspec,pagespec)
helpers.prefixpage(data,prefixspec,pagespec)
end
filters.section = { }
function filters.section.number(data,what,prefixspec)
if data then
local numberdata = data.numberdata
if numberdata then
sections.typesetnumber(numberdata,"number",prefixspec,numberdata)
else
local useddata = data.useddata
if useddata and useddata.number then
tex.sprint(tex.ctxcatcodes,useddata.number)
end
end
end
end
filters.section.title = filters.generic.title
filters.section.page = filters.generic.page
filters.section.default = filters.section.number
filters.note = { default = filters.generic.number }
filters.formula = { default = filters.generic.number }
filters.float = { default = filters.generic.number }
filters.description = { default = filters.generic.number }
filters.item = { default = filters.generic.number }
function references.sectiontitle(n)
helpers.sectiontitle(lists.collected[tonumber(n) or 0])
end
function references.sectionnumber(n)
helpers.sectionnumber(lists.collected[tonumber(n) or 0])
end
function references.sectionpage(n,prefixspec,pagespec)
helpers.prefixedpage(lists.collected[tonumber(n) or 0],prefixspec,pagespec)
end
-- analyze
references.testrunners = references.testrunners or { }
references.testspecials = references.testspecials or { }
local runners = references.testrunners
local specials = references.testspecials
function references.analyze(actions)
actions = actions or references.currentset
if not actions then
actions = { realpage = 0 }
elseif actions.realpage then
-- already analyzed
else
-- we store some analysis data alongside the indexed array
-- at this moment only the real reference page is analyzed
-- normally such an analysis happens in the backend code
texcount.referencepagestate = 0
local nofactions = #actions
if nofactions > 0 then
for i=1,nofactions do
local a = actions[i]
local what = runners[a.kind]
if what then
what = what(a,actions)
end
end
local realpage, p = texcount.realpageno, tonumber(actions.realpage)
if not p then
-- sorry
elseif p > realpage then
texcount.referencepagestate = 3
elseif p < realpage then
texcount.referencepagestate = 2
else
texcount.referencepagestate = 1
end
end
end
return actions
end
function references.realpage() -- special case, we always want result
local cs = references.analyze()
texwrite(cs.realpage or 0)
end
--
references.pages = allocate {
[variables.firstpage] = function() return counters.record("realpage")["first"] end,
[variables.previouspage] = function() return counters.record("realpage")["previous"] end,
[variables.nextpage] = function() return counters.record("realpage")["next"] end,
[variables.lastpage] = function() return counters.record("realpage")["last"] end,
[variables.firstsubpage] = function() return counters.record("subpage" )["first"] end,
[variables.previoussubpage] = function() return counters.record("subpage" )["previous"] end,
[variables.nextsubpage] = function() return counters.record("subpage" )["next"] end,
[variables.lastsubpage] = function() return counters.record("subpage" )["last"] end,
[variables.forward] = function() return counters.record("realpage")["forward"] end,
[variables.backward] = function() return counters.record("realpage")["backward"] end,
}
-- maybe some day i will merge this in the backend code with a testmode (so each
-- runner then implements a branch)
runners["inner"] = function(var,actions)
local r = var.r
if r then
actions.realpage = r
end
end
runners["special"] = function(var,actions)
local handler = specials[var.special]
return handler and handler(var,actions)
end
runners["special operation"] = runners["special"]
runners["special operation with arguments"] = runners["special"]
local pages = references.pages
function specials.internal(var,actions)
local v = references.internals[tonumber(var.operation)]
local r = v and v.references.realpage
if r then
actions.realpage = r
end
end
specials.i = specials.internal
function specials.page(var,actions) -- is this ok?
local p = pages[var.operation]
if type(p) == "function" then
p = p()
end
if p then
actions.realpage = p
end
end
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