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|
if not modules then modules = { } end modules ['publ-dat'] = {
version = 1.001,
comment = "this module part of publication support",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- todo: strip the @ in the lpeg instead of on do_definition and do_shortcut
-- todo: store bibroot and bibrootdt
--[[ldx--
<p>This is a prelude to integrated bibliography support. This file just loads
bibtex files and converts them to xml so that the we access the content
in a convenient way. Actually handling the data takes place elsewhere.</p>
--ldx]]--
if not characters then
dofile(resolvers.findfile("char-utf.lua"))
dofile(resolvers.findfile("char-tex.lua"))
end
local chardata = characters.data
local lowercase = characters.lower
local lower, gsub, find = string.lower, string.gsub, string.find
local concat = table.concat
local next, type, rawget = next, type, rawget
local utfchar = utf.char
local lpegmatch, lpegpatterns = lpeg.match, lpeg.patterns
local textoutf = characters and characters.tex.toutf
local settings_to_hash, settings_to_array = utilities.parsers.settings_to_hash, utilities.parsers.settings_to_array
local formatters = string.formatters
local sortedkeys, sortedhash = table.sortedkeys, table.sortedhash
local xmlcollected, xmltext, xmlconvert = xml.collected, xml.text, xmlconvert
local setmetatableindex = table.setmetatableindex
-- todo: more allocate
local P, R, S, V, C, Cc, Cs, Ct, Carg = lpeg.P, lpeg.R, lpeg.S, lpeg.V, lpeg.C, lpeg.Cc, lpeg.Cs, lpeg.Ct, lpeg.Carg
local trace = false trackers.register("publications", function(v) trace = v end)
local report = logs.reporter("publications")
publications = publications or { }
local publications = publications
local datasets = publications.datasets or { }
publications.datasets = datasets
local writers = publications.writers or { }
publications.writers = writers
publications.statistics = publications.statistics or { }
local publicationsstats = publications.statistics
publicationsstats.nofbytes = 0
publicationsstats.nofdefinitions = 0
publicationsstats.nofshortcuts = 0
publicationsstats.nofdatasets = 0
local xmlplaceholder = "<?xml version='1.0' standalone='yes'?>\n<bibtex></bibtex>"
local defaultshortcuts = {
jan = "1",
feb = "2",
mar = "3",
apr = "4",
may = "5",
jun = "6",
jul = "7",
aug = "8",
sep = "9",
oct = "10",
nov = "11",
dec = "12",
}
local space = lpeg.patterns.whitespace^0
local separator = space * "+" * space
local l_splitter = lpeg.tsplitat(separator)
local d_splitter = lpeg.splitat (separator)
function publications.parenttag(dataset,tag)
if not dataset or not tag then
report("error in specification, dataset %a, tag %a",dataset,tag)
elseif find(tag,"%+") then
local tags = lpegmatch(l_splitter,tag)
local parent = tags[1]
local luadata = datasets[dataset].luadata
local first = luadata[parent]
if first then
local combined = first.combined
if not combined then
combined = { }
first.combined = combined
end
-- add new ones but only once
for i=2,#tags do
local tag = tags[i]
for j=1,#combined do
if combined[j] == tag then
tag = false
end
end
if tag then
local entry = luadata[tag]
if entry then
combined[#combined+1] = tag
end
end
end
return parent
end
end
return tag or ""
end
function publications.new(name)
publicationsstats.nofdatasets = publicationsstats.nofdatasets + 1
local dataset = {
name = name or "dataset " .. publicationsstats.nofdatasets,
nofentries = 0,
shortcuts = { },
luadata = { },
suffixes = { },
xmldata = xmlconvert(xmlplaceholder),
-- details = { },
-- ordered = { },
nofbytes = 0,
entries = nil, -- empty == all
sources = { },
loaded = { },
fields = { },
userdata = { },
used = { },
commands = { }, -- for statistical purposes
status = {
resources = false,
userdata = false,
},
}
-- we delay details till we need it (maybe we just delay the
-- individual fields but that is tricky as there can be some
-- depedencies)
setmetatableindex(dataset,function(t,k)
-- will become a plugin
if k == "details" then
if publications.enhance then
dataset.details = { }
publications.enhance(dataset.name)
return dataset.details
end
elseif k == "ordered" then
local luadata = dataset.luadata
local ordered = sortedkeys(luadata)
for i=1,#ordered do
ordered[i] = luadata[ordered[i]]
end
dataset.ordered = ordered
return ordered
end
end)
return dataset
end
function publications.markasupdated(name)
if name == "string" then
datasets[name].details = nil
else
datasets.details = nil
end
end
setmetatableindex(datasets,function(t,k)
if type(k) == "table" then
return k -- so we can use this accessor as checker
else
local v = publications.new(k)
datasets[k] = v
return v
end
end)
-- we apply some normalization
local space = S(" \t\n\r\f") -- / " "
----- command = P("\\") * Cc("btxcmd{") * (R("az","AZ")^1) * Cc("}")
----- command = P("\\") * (Carg(1) * C(R("az","AZ")^1) / function(list,c) list[c] = (list[c] or 0) + 1 return "btxcmd{" .. c .. "}" end)
local command = P("\\") * (Carg(1) * C(R("az","AZ")^1) * space^0 / function(list,c) list[c] = (list[c] or 0) + 1 return "btxcmd{" .. c .. "}" end)
local somemath = P("$") * ((1-P("$"))^1) * P("$") -- let's not assume nested math
local any = P(1)
local done = P(-1)
local one_l = P("{") / ""
local one_r = P("}") / ""
local two_l = P("{{") / ""
local two_r = P("}}") / ""
local special = P("#") / "\\letterhash"
local filter_0 = S('\\{}')
local filter_1 = (1-filter_0)^0 * filter_0
local filter_2 = Cs(
-- {{...}} ... {{...}}
-- two_l * (command + special + any - two_r - done)^0 * two_r * done +
-- one_l * (command + special + any - one_r - done)^0 * one_r * done +
(somemath + command + special + any )^0
)
-- Currently we expand shortcuts and for large ones (like the acknowledgements
-- in tugboat.bib) this is not that efficient. However, eventually strings get
-- hashed again.
local function do_shortcut(key,value,dataset)
publicationsstats.nofshortcuts = publicationsstats.nofshortcuts + 1
dataset.shortcuts[key] = value
end
local function getindex(dataset,luadata,tag)
local found = luadata[tag]
if found then
return found.index or 0
else
local index = dataset.nofentries + 1
dataset.nofentries = index
return index
end
end
publications.getindex = getindex
-- todo: categories : metatable that lowers and also counts
-- todo: fields : metatable that lowers
local function do_definition(category,tag,tab,dataset)
publicationsstats.nofdefinitions = publicationsstats.nofdefinitions + 1
local fields = dataset.fields
local luadata = dataset.luadata
local found = luadata[tag]
local index = getindex(dataset,luadata,tag)
local entries = {
category = lower(category),
tag = tag,
index = index,
}
for i=1,#tab,2 do
local original = tab[i]
local normalized = fields[original]
if not normalized then
normalized = lower(original) -- we assume ascii fields
fields[original] = normalized
end
local value = tab[i+1]
value = textoutf(value)
if lpegmatch(filter_1,value) then
value = lpegmatch(filter_2,value,1,dataset.commands) -- we need to start at 1 for { }
end
if normalized == "crossref" then
local parent = luadata[value]
if parent then
setmetatableindex(entries,parent)
else
-- warning
end
end
entries[normalized] = value
end
luadata[tag] = entries
end
local function resolve(s,dataset)
return dataset.shortcuts[s] or defaultshortcuts[s] or s -- can be number
end
local percent = P("%")
local start = P("@")
local comma = P(",")
local hash = P("#")
local escape = P("\\")
local single = P("'")
local double = P('"')
local left = P('{')
local right = P('}')
local both = left + right
local lineending = S("\n\r")
local space = S(" \t\n\r\f") -- / " "
local spacing = space^0
local equal = P("=")
----- collapsed = (space^1)/ " "
local collapsed = (lpegpatterns.whitespace^1)/" "
----- balanced = lpegpatterns.balanced
local balanced = P {
-- [1] = ((escape * (left+right)) + (collapsed + 1 - (left+right)) + V(2))^0,
[1] = ((escape * (left+right)) + collapsed + (1 - (left+right))^1 + V(2))^0,
[2] = left * V(1) * right,
}
local unbalanced = P {
[1] = left * V(2) * right,
[2] = ((escape * (left+right)) + collapsed + (1 - (left+right))^1 + V(1))^0,
}
local keyword = C((R("az","AZ","09") + S("@_:-"))^1)
local key = C((1-space-equal)^1)
local tag = C((1-space-comma)^1)
local reference = keyword
local category = P("@") * C((1-space-left)^1)
local s_quoted = ((escape*single) + collapsed + (1-single))^0
local d_quoted = ((escape*double) + collapsed + (1-double))^0
local b_value = (left /"") * balanced * (right /"")
local u_value = (left /"") * unbalanced * (right /"") -- get rid of outer { }
local s_value = (single/"") * (u_value + s_quoted) * (single/"")
local d_value = (double/"") * (u_value + d_quoted) * (double/"")
local r_value = reference * Carg(1) /resolve
local somevalue = d_value + b_value + s_value + r_value
local value = Cs((somevalue * ((spacing * hash * spacing)/"" * somevalue)^0))
local forget = percent^1 * (1-lineending)^0
local spacing = spacing * forget^0 * spacing
local assignment = spacing * key * spacing * equal * spacing * value * spacing
local shortcut = P("@") * (P("string") + P("STRING")) * spacing * left * ((assignment * Carg(1))/do_shortcut * comma^0)^0 * spacing * right
local definition = category * spacing * left * spacing * tag * spacing * comma * Ct((assignment * comma^0)^0) * spacing * right * Carg(1) / do_definition
local comment = keyword * spacing * left * (1-right)^0 * spacing * right
-- todo \%
local bibtotable = (space + forget + shortcut + definition + comment + 1)^0
-- loadbibdata -> dataset.luadata
-- loadtexdata -> dataset.luadata
-- loadluadata -> dataset.luadata
-- converttoxml -> dataset.xmldata from dataset.luadata
function publications.loadbibdata(dataset,content,source,kind)
if not source then
report("invalid source for dataset %a",dataset)
return
end
dataset = datasets[dataset]
local size = #content
if size == 0 then
report("empty source %a for dataset %a",source,dataset.name)
else
report("adding bib data to set %a from source %a",dataset.name,source)
end
statistics.starttiming(publications)
publicationsstats.nofbytes = publicationsstats.nofbytes + size
dataset.nofbytes = dataset.nofbytes + size
if source then
table.insert(dataset.sources, { filename = source, checksum = md5.HEX(content) })
dataset.loaded[source] = kind or true
end
dataset.newtags = #dataset.luadata > 0 and { } or dataset.newtags
publications.markasupdated(dataset)
lpegmatch(bibtotable,content or "",1,dataset)
statistics.stoptiming(publications)
end
-- we could use xmlescape again
local cleaner_0 = S('<>&')
local cleaner_1 = (1-cleaner_0)^0 * cleaner_0
local cleaner_2 = Cs ( (
P("<") / "<" +
P(">") / ">" +
P("&") / "&" +
P(1)
)^0)
local compact = false -- can be a directive but then we also need to deal with newlines ... not now
function publications.converttoxml(dataset,nice) -- we have fields !
dataset = datasets[dataset]
local luadata = dataset and dataset.luadata
if luadata then
statistics.starttiming(publications)
statistics.starttiming(xml)
--
local result, r = { }, 0
--
r = r + 1 ; result[r] = "<?xml version='1.0' standalone='yes'?>"
r = r + 1 ; result[r] = "<bibtex>"
--
if nice then
local f_entry_start = formatters[" <entry tag='%s' category='%s' index='%s'>"]
local f_entry_stop = " </entry>"
local f_field = formatters[" <field name='%s'>%s</field>"]
for tag, entry in sortedhash(luadata) do
r = r + 1 ; result[r] = f_entry_start(tag,entry.category,entry.index)
for key, value in sortedhash(entry) do
if key ~= "tag" and key ~= "category" and key ~= "index" then
if lpegmatch(cleaner_1,value) then
value = lpegmatch(cleaner_2,value)
end
if value ~= "" then
r = r + 1 ; result[r] = f_field(key,value)
end
end
end
r = r + 1 ; result[r] = f_entry_stop
end
else
local f_entry_start = formatters["<entry tag='%s' category='%s' index='%s'>"]
local f_entry_stop = "</entry>"
local f_field = formatters["<field name='%s'>%s</field>"]
for tag, entry in next, luadata do
r = r + 1 ; result[r] = f_entry_start(entry.tag,entry.category,entry.index)
for key, value in next, entry do
if key ~= "tag" and key ~= "category" and key ~= "index" then
if lpegmatch(cleaner_1,value) then
value = lpegmatch(cleaner_2,value)
end
if value ~= "" then
r = r + 1 ; result[r] = f_field(key,value)
end
end
end
r = r + 1 ; result[r] = f_entry_stop
end
end
--
r = r + 1 ; result[r] = "</bibtex>"
--
result = concat(result,nice and "\n" or nil)
--
dataset.xmldata = xmlconvert(result, {
resolve_entities = true,
resolve_predefined_entities = true, -- in case we have escaped entities
-- unify_predefined_entities = true, -- & -> &
utfize_entities = true,
} )
--
statistics.stoptiming(xml)
statistics.stoptiming(publications)
if lxml then
lxml.register(formatters["btx:%s"](dataset.name),dataset.xmldata)
end
end
end
local loaders = publications.loaders or { }
publications.loaders = loaders
local function resolvedname(dataset,filename)
dataset = datasets[dataset]
if type(filename) ~= "string" then
report("invalid filename %a",tostring(filename))
end
local fullname = resolvers.findfile(filename,"bib")
if fullname == "" then
fullname = resolvers.findfile(filename) -- let's not be too picky
end
if not fullname or fullname == "" then
report("no file %a",filename)
dataset.fullname = filename
return dataset, false
else
dataset.fullname = fullname
return dataset, fullname
end
end
publications.resolvedname = resolvedname
function loaders.bib(dataset,filename,kind)
local dataset, fullname = resolvedname(dataset,filename)
if not fullname then
return
end
local data = io.loaddata(filename) or ""
if data == "" then
report("empty file %a, nothing loaded",fullname)
return
end
if trace then
report("loading file",fullname)
end
publications.loadbibdata(dataset,data,fullname,kind)
end
function loaders.lua(dataset,filename) -- if filename is a table we load that one
local data, fullname
if type(filename) == "table" then
dataset = datasets[dataset]
data = filename
else
dataset, fullname = resolvedname(dataset,filename)
if not fullname then
return
end
data = table.load(filename)
end
if data then
local luadata = dataset.luadata
for tag, entry in next, data do
if type(entry) == "table" then
entry.index = getindex(dataset,luadata,tag)
entry.tag = tag
luadata[tag] = entry -- no cleaning yet
end
end
end
end
function loaders.buffer(dataset,name) -- if filename is a table we load that one
dataset = datasets[dataset]
name = file.removesuffix(name)
local data = buffers.getcontent(name) or ""
if data == "" then
report("empty buffer %a, nothing loaded",name)
return
end
if trace then
report("loading buffer",name)
end
publications.loadbibdata(dataset,data,name,"bib")
end
function loaders.xml(dataset,filename)
local dataset, fullname = resolvedname(dataset,filename)
if not fullname then
return
end
local luadata = dataset.luadata
local root = xml.load(filename)
for bibentry in xmlcollected(root,"/bibtex/entry") do
local attributes = bibentry.at
local tag = attributes.tag
local entry = {
category = attributes.category,
tag = tag, -- afterwards also set, to prevent overload
index = 0, -- prelocated
}
for field in xmlcollected(bibentry,"/field") do
entry[field.at.name] = field.dt[1] -- no cleaning yet | xmltext(field)
end
entry.index = getindex(dataset,luadata,tag)
entry.tag = tag
luadata[tag] = entry
end
end
setmetatableindex(loaders,function(t,filetype)
local v = function(dataset,filename)
report("no loader for file %a with filetype %a",filename,filetype)
end
t[k] = v
return v
end)
function publications.load(dataset,filename,kind)
dataset = datasets[dataset]
statistics.starttiming(publications)
local files = settings_to_array(filename)
for i=1,#files do
local filetype, filename = string.splitup(files[i],"::")
if not filename then
filename = filetype
filetype = file.suffix(filename)
end
loaders[filetype](dataset,filename)
if kind then
dataset.loaded[dataset.fullname or filename] = kind
end
end
statistics.stoptiming(publications)
return dataset
end
local checked = function(s,d) d[s] = (d[s] or 0) + 1 end
local checktex = ( (1-P("\\"))^1 + P("\\") * ((C(R("az","AZ")^1) * Carg(1))/checked))^0
function publications.analyze(dataset)
dataset = datasets[dataset]
local data = dataset.luadata
local categories = { }
local fields = { }
local commands = { }
for k, v in next, data do
categories[v.category] = (categories[v.category] or 0) + 1
for k, v in next, v do
fields[k] = (fields[k] or 0) + 1
lpegmatch(checktex,v,1,commands)
end
end
dataset.analysis = {
categories = categories,
fields = fields,
commands = commands,
}
end
-- str = [[
-- @COMMENT { CRAP }
-- @STRING{ hans = "h a n s" }
-- @STRING{ taco = "t a c o" }
-- @SOMETHING{ key1, abc = "t a c o" , def = "h a n s" }
-- @SOMETHING{ key2, abc = hans # taco }
-- @SOMETHING{ key3, abc = "hans" # taco }
-- @SOMETHING{ key4, abc = hans # "taco" }
-- @SOMETHING{ key5, abc = hans # taco # "hans" # "taco"}
-- @SOMETHING{ key6, abc = {oeps {oeps} oeps} }
-- ]]
-- local dataset = publications.new()
-- publications.tolua(dataset,str)
-- publications.toxml(dataset)
-- publications.toxml(dataset)
-- print(dataset.xmldata)
-- inspect(dataset.luadata)
-- inspect(dataset.xmldata)
-- inspect(dataset.shortcuts)
-- print(dataset.nofbytes,statistics.elapsedtime(publications))
-- local dataset = publications.new()
-- publications.load(dataset,"IEEEabrv.bib")
-- publications.load(dataset,"IEEEfull.bib")
-- publications.load(dataset,"IEEEexample.bib")
-- publications.toxml(dataset)
-- print(dataset.nofbytes,statistics.elapsedtime(publications))
-- local dataset = publications.new()
-- publications.load(dataset,"gut.bib")
-- publications.load(dataset,"komoedie.bib")
-- publications.load(dataset,"texbook1.bib")
-- publications.load(dataset,"texbook2.bib")
-- publications.load(dataset,"texbook3.bib")
-- publications.load(dataset,"texgraph.bib")
-- publications.load(dataset,"texjourn.bib")
-- publications.load(dataset,"texnique.bib")
-- publications.load(dataset,"tugboat.bib")
-- publications.toxml(dataset)
-- print(dataset.nofbytes,statistics.elapsedtime(publications))
-- print(table.serialize(dataset.luadata))
-- print(table.serialize(dataset.xmldata))
-- print(table.serialize(dataset.shortcuts))
-- print(xml.serialize(dataset.xmldata))
-- a helper:
function publications.concatstate(i,n)
if i == 0 then
return 0
elseif i == 1 then
return 1
elseif i == 2 and n == 2 then
return 4
elseif i == n then
return 3
else
return 2
end
end
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