require('strict') -- local genitive = require('Module:Genitive')._genitive local contLang = mw.language.getContentLanguage()  local cmodule = {} local conf = require 'Module:External links/conf'(contLang:getCode()) local hasdatafromwikidata = false local hasdatafromlocal = false local haswikidatalink = true -- we assume it's connected  local p = {}  local function getLabel(entity, use_genitive, pagetitle)  local label = (pagetitle and pagetitle ~= '') and pagetitle or nil  if not label and not entity then  label = mw.title.getCurrentTitle().text  elseif not label then  label = mw.wikibase.label(entity.id) or mw.title.getCurrentTitle().text  end -- return use_genitive and genitive(label, 'sitt') or label  return use_genitive and label .. "'s" or label end  -- @todo cleanup, this is in production, use the console local function dump(obj)  return "<pre>" .. mw.dumpObject(obj) .. "</pre>" end   local function stringFormatter( datavalue )  if datavalue == nil or datavalue['type'] ~= 'string' then  return nil  end  return datavalue.value end  local pval = {} pval.P1793 = { -- format as a regular expression  types = {  snaktype = 'value',  datatype = 'string',  }, }  pval.P407 = { -- language of work or name  types = {  snaktype = 'value',  datatype = 'wikibase-item',  datavalue = {  type = 'wikibase-entityid',  }  }, }  pval.P364 = { -- original language of work   types = {  snaktype = 'value',  datatype = 'wikibase-item',  datavalue = {  type = 'wikibase-entityid',  }  }, }  pval.P218 = { -- ISO 639-1 language   types = {  snaktype = 'value',  datatype = 'external-id',  datavalue = {  type = 'string',  }  }, }  pval.P305 = { -- IETF language tag  types = {  snaktype = 'value',  datatype = 'external-id',  datavalue = {  type = 'string',  }  }, }  pval.P582 = { -- end time  types = {  snaktype = 'value',  datatype = 'time',  datavalue = {  type = 'string',  }  }, }   -- This is a really makeshift crappy converter, but it'll do some basic -- conversion from PCRE to Lua-style patterns (note that this only work -- in very few cases) local function regexConverter( regex )  local output = regex  output = string.gsub(output, "\\d{2}", "%%d%%d")  output = string.gsub(output, "\\d{3}", "%%d%%d%%d")  output = string.gsub(output, "\\d{4}", "%%d%%d%%d%%d")  output = string.gsub(output, "\\d{5}", "%%d%%d%%d%%d%%d")  output = string.gsub(output, "\\d{6}", "%%d%%d%%d%%d%%d%%d")  output = string.gsub(output, "\\d{7}", "%%d%%d%%d%%d%%d%%d%%d")  output = string.gsub(output, "\\d{8}", "%%d%%d%%d%%d%%d%%d%%d%%d")  output = string.gsub(output, "\\d", "%%d")   return output end   local function getFormatterUrl( prop, value )  local head = ""  local tail = ""  local entity = mw.wikibase.getEntity(prop)  -- to avoid deep tests  if not entity or not entity.claims then  return head  end  -- get the claims for this entity  local statements = entity.claims['P1630'] -- formatter URL  -- to avoid deep tests  if not statements then  return head  end  local formatters = {}  -- let's go through the claims  for _, claim in ipairs( statements ) do  -- to avoid deep tests  if not claim then  claim = {}  end  local valid = claim['type'] == 'statement'  and claim['rank'] ~= 'deprecated'  if valid then  local mainsnak = claim.mainsnak or {}  local preferred = claim['rank'] == 'preferred'  -- get any qualifiers for this claim (we are interested in P1793 for  -- indication of which claim is correct)   local qualifiers = claim.qualifiers or {}  -- now let's check the qualifier we are interested in  local qualid = 'P1793' -- format as a regular expression  -- if the claim has this qualifier  if qualifiers[qualid] then  -- it's here, let's check it out!  local items = {}  -- traverse all snaks in this qualifier  for _, qualsnak in ipairs( qualifiers[qualid] ) do  if qualsnak and pval[qualid] then  --mw.log("qualsnak = " .. dump(qualsnak))  -- check if the snak is of the correct snaktype and datatype  local valid = qualsnak.snaktype == pval[qualid].types.snaktype  and qualsnak.datatype == pval[qualid].types.datatype  if valid then  -- we'll have to convert the regex to Lua-style  local regex = regexConverter(qualsnak.datavalue.value)  local test = string.match( value, '^'..regex..'$' )  if test then  -- it matched, this is correct and overrides any other.  if preferred then  head = mainsnak.datavalue.value  else  tail = mainsnak.datavalue.value  end  end  end  end  end  else  -- we don't have any qualifier, is it preferred?  if (head == '' and preferred) or (tail == '' and not preferred) then  -- if we don't have any other, use this one  if preferred and head == '' then  head = mainsnak.datavalue.value  elseif not preferred and tail == '' then  tail = mainsnak.datavalue.value  end  end  end  end  end  return head ~= '' and head or tail  end    local function getLanguageData(prop, qid)  local head = {}  local tail = {}  -- mw.log("getLanguageData, prop="..dump(prop).." qid="..dump(qid))  -- get the entity we are checking  local entity = mw.wikibase.getEntityObject(qid)  -- to avoid deep tests  if not entity then  return nil  end  if not entity.claims then  return {}  end  -- get the claims for this entity  local statements = entity.claims[prop]  -- to avoid deep tests  if not statements then  return {}  end  -- mw.log("getLanguageData going through claims="..dump(statements))  -- let's go through the claims  for _, claim in ipairs( statements ) do  -- to avoid deep tests  if not claim then  claim = {}  end  local valid = claim['type'] == 'statement'  and claim['rank'] ~= 'deprecated'  if valid then  local mainsnak = claim.mainsnak or {}  local preferred = claim['rank'] == 'preferred'  -- verify the item is what we expect  local valid = mainsnak.snaktype == pval[prop].types.snaktype  and mainsnak.datatype == pval[prop].types.datatype  and mainsnak.datavalue.type == pval[prop].types.datavalue.type  if valid then  -- mw.log("getLanguageData claim is valid="..dump(claim))  -- if this is the correct P-value, dive into it and get P218 (ISO 639-1)  if mainsnak.property == 'P364' then -- original language of work  if preferred then  head[#head+1] = table.concat(getLanguageData('P218', 'Q'..mainsnak.datavalue.value['numeric-id']), conf:a('mod-filter-separator'))  else  tail[#tail+1] = table.concat(getLanguageData('P218', 'Q'..mainsnak.datavalue.value['numeric-id']), conf:a('mod-filter-separator'))  end  elseif mainsnak.property == 'P218' or mainsnak.property == 'P305' then -- ISO 639-1 code or IETF language tag  if preferred then  head[#head+1] = stringFormatter(mainsnak.datavalue)  else  tail[#tail+1] = stringFormatter(mainsnak.datavalue)  end  end  end  end  end  -- mw.log("getLanguageData returning head="..dump(head).." tail="..dump(tail))  return #head>0 and head or tail end  local langqvalorder = {'P407','P364'} local otherqvalorder = {'P582'}  local function getValuesFromWikidata(props)  local head = {}  local tail = {}  -- mw.log("getValuesFromWikidata, props="..dump(props))  -- get the entity we are checking  local entity = mw.wikibase.getEntityObject()  -- to avoid deep tests  if not entity then  --mw.log("getValuesFromWikidata no entity")  return nil  end  if not entity.claims or not props or not props.prop or props.prop == '' then  --mw.log("getValuesFromWikidata no claims or no props")  return {}  end  -- get the claims for this entity  local statements = entity.claims[props.prop]  -- to avoid deep tests  if not statements then  return {}  end  -- let's go through the claims  for _, claim in ipairs( statements ) do  -- to avoid deep tests  if not claim then  claim = {}  end  local valid = claim['type'] == 'statement'  and claim['rank'] ~= 'deprecated'  if valid then  -- mw.log("getValuesFromWikidata valid claim="..dump(claim))  local mainsnak = claim.mainsnak or {}  local preferred = claim['rank'] == 'preferred'  -- get the content of the claim (the identifier)  local langcode = props.langcode  local checklangcode = nil  if props.langcode and props.langcode ~= '' then  checklangcode = string.find(langcode, "([pP]%d+)")  end  if checklangcode and checklangcode ~= "" then  -- this is a P-value for language-code, so we'll check qualifiers for languagedata  -- first get any qualifiers  local qualifiers = claim.qualifiers or {}  for _, qualid in ipairs( langqvalorder ) do  -- if the claim has this qualifier  if qualifiers[qualid] then  -- it's here, let's check it out!  local items = {}  -- traverse all snaks in this qualifier  for _, qualsnak in ipairs( qualifiers[qualid] ) do  if qualsnak and pval[qualid] then  -- mw.log("qualsnak = " .. dump(qualsnak))  -- check if the snak is of the correct snaktype and datatype  local valid = qualsnak.snaktype == pval[qualid].types.snaktype  and qualsnak.datatype == pval[qualid].types.datatype  if valid then  -- now get the actual data  langcode = table.concat(getLanguageData('P305', 'Q'..qualsnak.datavalue.value['numeric-id']), '')  end  end  end  end  -- mw.log("langcode is now="..dump(langcode))  end  if string.find(langcode, "([pP]%d+)") then  -- we still don't have any langcode, so we default to "en"  langcode = nil  end  end  local stillvalid = true  -- we should check a couple of other qualifiers as well  -- first get any qualifiers  local qualifiers = claim.qualifiers or {}  for _, qualid in ipairs( otherqvalorder ) do  -- if the claim has this qualifier  if qualifiers[qualid] then  -- it's here, let's check it out!  local items = {}  -- traverse all snaks in this qualifier  for _, qualsnak in ipairs( qualifiers[qualid] ) do  if qualsnak and pval[qualid] then  -- mw.log("qualsnak = " .. dump(qualsnak))  -- check if the snak is of the correct snaktype and datatype  local valid = qualsnak.snaktype == pval[qualid].types.snaktype  and qualsnak.datatype == pval[qualid].types.datatype  if not valid then  -- sorry, this is not correct  mw.log("qualsnak = INCORRECT")  stillvalid = false  end  end  end  end  -- mw.log("langcode is now="..dump(langcode))  end  if stillvalid then  if preferred then  head[#head+1] = { value=stringFormatter(mainsnak.datavalue) }  if langcode and langcode ~= '' then  head[#head]['langcode'] = langcode  end  else  tail[#tail+1] = { value=stringFormatter(mainsnak.datavalue) }  if langcode and langcode ~= '' then  tail[#tail]['langcode'] = langcode  end  end  end  end  end  -- mw.log("getValuesFromWikidata returning head="..dump(head).." tail="..dump(tail))  return #head>0 and head or tail end  local function findMainLinksOnWikidata(props, pagetitle, short_links)  local output = {}  local pid = nil  -- get the entity we are checking  local entity = mw.wikibase.getEntityObject()  -- to avoid deep tests  if not entity then  return nil  end  local values = getValuesFromWikidata(props)  for _, value in ipairs( values ) do  local verified_value = nil  if props.regex then  -- we have a local defined regex, so this will have to pass first  -- maybe we'll have to convert the regex to Lua-style  local regex = regexConverter(props.regex)  local test = string.match( value.value, '^'..regex..'$' )  --mw.log("testing with "..regex.. " and test="..dump(test).." and value="..id)  if test then  -- it matched, this is correct and overrides any other.  verified_value = value.value  end  else  verified_value = value.value  end  if verified_value then  local url = ''  output[#output+1] = {}  output[#output].langcode = value.langcode  output[#output].category = {}  if props.url_f then  -- we have a local defined url-formatter function, use it as first priority  url = props.url_f(verified_value)  if props.track and not string.find(props.langcode, "([pP]%d+)") then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-wd'), props.prop):plain()  elseif props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  elseif props.url then  -- we have a local defined url-formatter string, use it as second priority  url = mw.message.newRawMessage(props.url, verified_value):plain()  if props.track and not string.find(props.langcode, "([pP]%d+)") then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-wd'), props.prop):plain()  elseif props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  else  -- get the formatvalue from the property, if it exists  local formatterUrl = getFormatterUrl(props.prop, verified_value)  if formatterUrl ~= '' then  url = mw.message.newRawMessage(formatterUrl, verified_value):plain()  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  end  end  if url ~= '' then  local this_wiki = mw.getContentLanguage()  local this_wiki_code = this_wiki:getCode()  local langlink = (value.langcode and value.langcode ~= '' and value.langcode ~= this_wiki_code) and mw.message.newRawMessage(conf:g('msg-langcode'), value.langcode, mw.language.fetchLanguageName(value.langcode, this_wiki_code)) or ""  if short_links and props.short then  output[#output].text =  mw.message.newRawMessage(props.short,  getLabel(entity, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  else  output[#output].text =  mw.message.newRawMessage(props.message,  getLabel(entity, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  end  end  end  end  --mw.log("findMainLinksOnWikidata returning="..dump(output))  return output end  local function getSitelinksFromWikidata(props, entity)  local output = {}  --mw.log("getSitelinksFromWikidata, props="..dump(props))  -- to avoid deep tests  if not entity then  entity = mw.wikibase.getEntityObject()  if not entity then  --mw.log("getSitelinksFromWikidata no entity")  return nil  end  end  local requested_sitelink = string.match(props.prop, "SL(%l+)")  local sitelinks = entity:getSitelink(requested_sitelink)  if sitelinks and sitelinks ~= '' then  output[#output+1] = { value = sitelinks }  end  --mw.log("getSitelinksFromWikidata returning output="..dump(output))  return output end   local function findSiteLinksOnWikidata(props, pagetitle, short_links)  local output = {}  local pid = nil  -- get the entity we are checking  local entity = mw.wikibase.getEntityObject()  -- to avoid deep tests  if not entity then  return nil  end  local values = getSitelinksFromWikidata(props)  for _, value in ipairs( values ) do  local verified_value = nil  if props.regex then  -- we have a local defined regex, so this will have to pass first  -- maybe we'll have to convert the regex to Lua-style  local regex = regexConverter(props.regex)  local test = string.match( value.value, '^'..regex..'$' )  --mw.log("testing with "..regex.. " and test="..dump(test).." and value="..id)  if test then  -- it matched, this is correct and overrides any other.  verified_value = value.value  end  else  verified_value = value.value  end  if verified_value then  --mw.log("it's verified..")  local url = ''  output[#output+1] = {}  output[#output].langcode = value.langcode  output[#output].category = {}  if props.url_f then  -- we have a local defined url-formatter function, use it as first priority  url = props.url_f(verified_value)  if props.track and not string.find(props.langcode, "(SL%l+)") then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-wd'), props.prop):plain()  elseif props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  elseif props.url then  -- we have a local defined url-formatter string, use it as second priority  url = mw.message.newRawMessage(props.url, verified_value):plain()  if props.track and not string.find(props.langcode, "(SL%l+)") then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-wd'), props.prop):plain()  elseif props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  else  url = verified_value:gsub(' ','_')  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-wd'), props.prop):plain()  end  end  if url ~= '' then  local this_wiki = mw.getContentLanguage()  local this_wiki_code = this_wiki:getCode()  local langlink = (value.langcode and value.langcode ~= '' and value.langcode ~= this_wiki_code) and mw.message.newRawMessage(conf:g('msg-langcode'), value.langcode, mw.language.fetchLanguageName(value.langcode, this_wiki_code)) or ""  if short_links and props.short then  output[#output].text =  mw.message.newRawMessage(props.short,  getLabel(entity, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  else  output[#output].text =  mw.message.newRawMessage(props.message,  getLabel(entity, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  end  end  end  end  --mw.log("findSiteLinksOnWikidata returning="..dump(output))  return output end   local function findMainLinksLocal(props, pagetitle, short_links, local_value)  local output = {}  -- to avoid deep tests  if not props.prop then  return nil  end  if not (local_value or local_value == '') then  -- bail out if no value is present  return output  end  -- get the formatvalue from the property  local verified_value = local_value  if props.regex and props.regex ~= '' then  -- let's verify the id  -- maybe we'll have to convert the regex to Lua-style  local regex = regexConverter(props.regex)  local test = string.match( local_value, '^'..regex..'$' )  if test then  -- it matched, this is correct  verified_value = local_value  else  verified_value = nil  end   end  if not verified_value then  return output  end  local wikidata_property = string.find(props.prop, "([pP]%d+)")  local wikidata_values = {}  if wikidata_property then  -- get any wikidata values to see if they are equal to local values  wikidata_values = getValuesFromWikidata(props)  end  if wikidata_property or (props.url and props.url ~= '') or (props.url_f) then  output[#output+1] = {}  output[#output].langcode = string.find(props.langcode, "([pP]%d+)") and "" or props.langcode  --mw.log("findMainLinksLocal - props="..dump(props).." langcode="..output[#output].langcode)  output[#output].category = {}  local url = ''  if props.track and wikidata_property and wikidata_values and #wikidata_values then  local local_value_in_wikidata = false  for _,value in ipairs( wikidata_values ) do  if value.value == verified_value then  local_value_in_wikidata = true  end  end  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), (local_value_in_wikidata and 'track-cat-local-wd-equal' or 'track-cat-local-wd-unequal')), props.prop):plain()  end  if wikidata_property and wikidata_values and #wikidata_values then  hasdatafromwikidata = true -- signal up the chain this article has a wikidata claim  end  if props.url_f then  -- we have a local defined url-formatter function, use it as first priority  url = props.url_f(verified_value)  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-local'), props.prop):plain()  end  elseif props.url then  -- we have a local defined url-formatter string, use it as second priority  url = mw.message.newRawMessage(props.url, verified_value):plain()  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-local'), props.prop):plain()  end  elseif wikidata_property then  -- get the formatvalue from the property, if it exists  local formatterUrl = getFormatterUrl(props.prop, verified_value)  if formatterUrl ~= '' then  url = mw.message.newRawMessage(formatterUrl, verified_value):plain()  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-local'), props.prop):plain()  end  end  else  -- no other choice, bail out  return {}  end  local this_wiki = mw.getContentLanguage()  local this_wiki_code = this_wiki:getCode()  local langlink = (output[#output].langcode and output[#output].langcode ~= '' and output[#output].langcode ~= this_wiki_code) and mw.message.newRawMessage(conf:g('msg-langcode'), props.langcode, mw.language.fetchLanguageName(props.langcode, this_wiki_code)) or ""  if short_links and props.short then  output[#output].text =  mw.message.newRawMessage(props.short,  getLabel(nil, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  else  output[#output].text =  mw.message.newRawMessage(props.message,  getLabel(nil, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  end  end  --mw.log("findMainLinksLocal returning="..dump(output))  return output end  local function findSiteLinksLocal(props, pagetitle, short_links, local_value)  local output = {}  -- to avoid deep tests  if not props.prop then  return nil  end  if not (local_value or local_value == '') then  -- bail out if no value is present  return output  end  -- get the formatvalue from the property  local verified_value = local_value  if props.regex and props.regex ~= '' then  -- let's verify the id  -- maybe we'll have to convert the regex to Lua-style  local regex = regexConverter(props.regex)  local test = string.match( local_value, '^'..regex..'$' )  if test then  -- it matched, this is correct  verified_value = local_value  else  verified_value = nil  end   end  if not verified_value then  return output  end  local wikidata_property = string.find(props.prop, "(SL.+)")  local wikidata_values = {}  if wikidata_property then  -- get any wikidata values to see if they are equal to local values  wikidata_values = getSitelinksFromWikidata(props)  end  if wikidata_property or (props.url and props.url ~= '') or (props.url_f) then  output[#output+1] = {}  output[#output].langcode = string.find(props.langcode, "(SL.+)") and "" or props.langcode  --mw.log("findSiteLinksLocal - props="..dump(props).." langcode="..output[#output].langcode .." wikidata_values="..dump(wikidata_values))  output[#output].category = {}  local url = ''  if props.track and wikidata_property and wikidata_values and #wikidata_values then  local local_value_in_wikidata = false  for _,value in ipairs( wikidata_values ) do  if value.value == verified_value then  local_value_in_wikidata = true  end  end  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), (local_value_in_wikidata and 'track-cat-local-wd-equal' or 'track-cat-local-wd-unequal')), props.prop):plain()  end  if wikidata_property and wikidata_values and #wikidata_values then  hasdatafromwikidata = true -- signal up the chain this article has a wikidata claim  end  if props.url_f then  -- we have a local defined url-formatter function, use it as first priority  url = props.url_f(verified_value)  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-local'), props.prop):plain()  end  elseif props.url then  -- we have a local defined url-formatter string, use it as second priority  url = mw.message.newRawMessage(props.url, verified_value):plain()  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-local-local'), props.prop):plain()  end  elseif wikidata_property then  url = verified_value:gsub(' ','_')  if props.track then  output[#output].category[#output[#output].category+1] = mw.message.newRawMessage(cmodule:getMessage(contLang:getCode(), 'track-cat-wd-local'), props.prop):plain()  end  else  -- no other choice, bail out  return {}  end  local this_wiki = mw.getContentLanguage()  local this_wiki_code = this_wiki:getCode()  local langlink = (output[#output].langcode and output[#output].langcode ~= '' and output[#output].langcode ~= this_wiki_code) and mw.message.newRawMessage(conf:g('msg-langcode'), props.langcode, mw.language.fetchLanguageName(props.langcode, this_wiki_code)) or ""  if short_links and props.short then  output[#output].text =  mw.message.newRawMessage(props.short,  getLabel(nil, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  else  output[#output].text =  mw.message.newRawMessage(props.message,  getLabel(nil, props.genitive, pagetitle),  url,  langlink,  verified_value,  mw.uri.encode(verified_value, 'PATH'))  :plain()  end  end  --mw.log("findSiteLinksLocal returning="..dump(output))  return output end   local function addLinkback(str, property)  local id = mw.wikibase.getEntityObject()  if not id then  return str  end  if type(id) == 'table' then  id = id.id  end   local class = ''  local url = ''  if property then  class = 'wd_' .. string.lower(property)  url = mw.uri.fullUrl('d:' .. id .. '#' .. property)  url.fragment = property  else  url = mw.uri.fullUrl('d:' .. id )  end   local title = conf:g('wikidata-linkback-edit')  local icon = '[%s [[File:Blue pencil.svg|%s|10px|text-top|link=]] ]'  url = tostring(url)  local v = mw.html.create('span')  :addClass(class)  :wikitext(str)  :tag('span')  :addClass('noprint plainlinks wikidata-linkback')  :css('padding-left', '.3em')  :wikitext(icon:format(url, title))  :allDone()  return tostring(v) end   local function getArgument(frame, argument)  local args = frame.args  if args[1] == nil then  local pFrame = frame:getParent();  args = pFrame.args;  for k,v in pairs( frame.args ) do  args[k] = v;  end  end  if args[argument] then  return args[argument]  end  return nil end   local function removeEntry(conf_claims, identifier, property)  for i, props in ipairs(conf_claims) do  if props[identifier] == property then  table.remove(conf_claims, i)  end  end  return conf_claims end  function p.getLinks(frame)  local configured_conf = getArgument(frame, conf:a('arg-conf'))  if configured_conf then  cmodule = require ('Module:External_links/conf/'..configured_conf)  else  error(mw.message.newRawMessage(conf:g('missing-conf'), configured_conf):plain())  end  local output = {}  local category = {}  local conf_claims = cmodule:getConfiguredClaims(contLang:getCode())  local limits = cmodule:getLimits()  assert(limits, mw.message.newRawMessage(conf:g('missing-limits'), configured_conf):plain())  local links_shown = getArgument(frame, conf:a('arg-maxlink'))  local pagetitle = getArgument(frame, conf:a('arg-title'))  -- get a list of tracked properties from the article itself  local requested_tracking = getArgument(frame, conf:a('arg-track'))  if requested_tracking and requested_tracking ~= '' then  -- the properties should be written as P1234, P2345 and other   -- version corresponding to the applicable property-identifiers in the config  for track_prop in string.gmatch(requested_tracking,"([^ ,;:]+)") do  -- get the requested properties and be able to access them  -- like req_prop['P345'] to verify if it was requested  local remove_track = string.match(track_prop, "^\-(.*)")  for i,claim in ipairs ( conf_claims ) do  if remove_track == claim.prop or remove_track == conf:a('mod-filter-all') then  -- if a property starts with "-", then we'll simply remove that   -- property from the conf_claims  conf_claims[i]['track'] = false  elseif track_prop == claim.prop or track_prop == conf:a('mod-filter-all') then  conf_claims[i]['track'] = true  end  end  end  end  -- get a list of "approved" properties from the article itself  local requested_properties = getArgument(frame, conf:a('arg-properties'))  --mw.log("requested_properties="..dump(requested_properties))  -- assume all properties are allowed  local req_prop = {}  local no_req_prop = false -- we'll allow properties to be filtered for now   if requested_properties and requested_properties ~= '' then  -- the properties should be written as P1234, P2345 and other   -- version corresponding to the applicable property-identifiers in the config  for i in string.gmatch(requested_properties,"([^ ,;:]+)") do  -- get the requested properties and be able to access them  -- like req_prop['P345'] to verify if it was requested  if i == conf:a('mod-filter-all') then  -- this is a special modifier, saying we should ignore   -- all previous and future positive filters and remove the  -- filter (with exception of negative filters)  req_prop = {}  no_req_prop = true  end  local remove_prop = string.match(i, "^\-(.*)")  if remove_prop then  -- if a property starts with "-", then we'll simply remove that   -- property from the conf_claims  conf_claims = removeEntry(conf_claims, 'prop', remove_prop)  elseif not no_req_prop then -- only if we are allowing properties to be filtered   req_prop[i] = 1  -- cheat to make #req_prop indicate populated table  req_prop[1] = 1  end  end  end  local requested_langs = getArgument(frame, conf:a('arg-languages'))  --mw.log("requested_langs="..dump(requested_langs))  -- assume all languages are allowed  local req_lang = {}  local no_req_lang = false -- we'll allow languages to be filtered for now  if requested_langs and requested_langs ~= '' then  -- the languages should be written as langcodes as used in the conf_claims  for i in string.gmatch(requested_langs,"([^ ,;:]+)") do  -- get the requested languages and be able to access them  if i == conf:a('mod-filter-all') then  -- this is a special modifier, saying we should ignore   -- all previous and future positive filters and remove the  -- filter (with exception of negative filters)  req_lang = {}  no_req_lang = true  end  -- like req_lang['en'] to verify if it was requested  local remove_lang = string.match(i, "^\-(.*)")  if remove_lang then  -- if a language starts with "-", then we'll simply remove that   -- language from the conf_claims  conf_claims = removeEntry(conf_claims, 'langcode', remove_lang)  elseif not no_req_lang then -- only if we are allowing languages to be filtered   req_lang[i] = 1  -- cheat to make #req_lang indicate populated table  req_lang[1] = 1  end  end  end  local short_links = getArgument(frame, conf:a('arg-short'))  if short_links and short_links ~= '' then  short_links = true  else  short_links = false  end  local showinline = getArgument(frame, conf:a('arg-inline'))  if showinline and showinline ~= '' then  showinline = true  else  showinline = false  end  if not links_shown or links_shown == '' then  links_shown = limits['links-shown'] and limits['links-shown'] or 10  else  links_shown = tonumber(links_shown)  end  local somedataonwikidata = (short_links and false or true)  --mw.log("conf_claims="..dump(conf_claims))  --mw.log("req_prop="..dump(req_prop))  --mw.log("req_lang="..dump(req_lang))  --mw.log("short_links="..dump(short_links))  for _, props in ipairs(conf_claims) do  -- if we're called with a list of approved properties or languages, check if this one is "approved"  if (#req_prop==0 or req_prop[props.prop]) and (#req_lang==0 or req_lang[props.langcode] or string.find(props.langcode, "([pP]%d+)")) then  --mw.log("checking claim="..dump(props))  local links = {}  local checkedonwikidata = false  -- get the any local overriding value from the call  local wikivalue = getArgument(frame, props.prop)  --mw.log("wikivalue="..dump(wikivalue))  if (not wikivalue or wikivalue == "") and string.find(props.prop, "([pP]%d+)") then  -- the property is a Pnnn type, and therefore on Wikidata  links = findMainLinksOnWikidata(props, pagetitle, short_links)  if links == nil then  -- a nil-value indicated no wikidata-link  haswikidatalink = false  links = {}  else  checkedonwikidata = true  end  elseif (not wikivalue or wikivalue == "") and string.find(props.prop, "(SL%l+)") then  -- this is a sitelink-type (SLspecieswiki)  --mw.log("finding sitelinks..")  links = findSiteLinksOnWikidata(props, pagetitle, short_links)  if links == nil then  -- a nil-value indicated no wikidata-link  haswikidatalink = false  links = {}  else  checkedonwikidata = true  end  elseif (wikivalue and wikivalue ~= "") and string.find(props.prop, "(SL%l+)") then  -- this is a sitelink-type (SLspecieswiki)  links = findSiteLinksLocal(props, pagetitle, short_links, wikivalue)  elseif wikivalue and wikivalue ~= '' then  -- the property is of another annotation, and therefore a local construct  links = findMainLinksLocal(props, pagetitle, short_links, wikivalue)  end  --mw.log("links="..dump(links))  for _,v in ipairs(links) do  -- we'll have to check langcodes again as they may have come from wikidata  if (#req_lang==0 or req_lang[v.langcode]) then  if checkedonwikidata and not hasdatafromwikidata then  -- add a general tracking category for articles with data from wikidata  hasdatafromwikidata = true  category[#category+1] = cmodule:getMessage(contLang:getCode(), 'with-data-cat')  elseif not checkedonwikidata and not hasdatafromlocal then  -- add a general tracking category for articles with data from template-calls in local articles  hasdatafromlocal = true  category[#category+1] = cmodule:getMessage(contLang:getCode(), 'with-local-cat')  end  if short_links and props.short and v.text and v.text ~= '' then  -- if short links were requested, and a short definition exists for this property, let's use it  if #output==0 then  output[#output+1] = v.text  else  output[#output] = output[#output] .. cmodule:getMessage(contLang:getCode(),'short-list-separator') .. v.text  end  somedataonwikidata = true  elseif not short_links and not showinline and v.text and v.text ~= '' then  -- only if short links were not requested  output[#output+1] = (#output>=1 and conf:g('msg-ul-prepend') or '') -- if this is the first link, we won't output a list-element (msg-ul-prepend)   .. (checkedonwikidata and addLinkback(v.text, props.prop) or v.text) -- if the link comes from wikidata, also output a linkback.  elseif not short_links and showinline and v.text and v.text ~= '' then  -- only if short links were not requested  output[#output+1] = v.text  end  if props.track and v.category and #v.category then  -- add category if tracking is on for this property and a category exists in the link-result.  for _,cats in ipairs( v.category ) do  category[#category+1] = cats  end  end  if links_shown>0 then  links_shown = links_shown - 1  else  break  end  end  end  if links_shown==0 then  break  end  end  end  local outtext = ""  if short_links and #output>0 then  -- if these are short links, output the whole thing with linkback to wikidata  --mw.log("somedataonwikidata="..dump(somedataonwikidata).." and output="..dump(output).." and #output="..dump(#output))  outtext = (somedataonwikidata  and addLinkback(table.concat(output,cmodule:getMessage(contLang:getCode(),'short-list-separator')), nil)  or table.concat(output,cmodule:getMessage(contLang:getCode(),'short-list-separator')))  elseif not short_links and not showinline and #output>0 then  outtext = table.concat(output,"\n")  elseif not short_links and showinline and #output>0 then  outtext = table.concat(output,conf:g('msg-inline-separator'))  end  if not hasdatafromwikidata then  category[#category+1] = cmodule:getMessage(contLang:getCode(), 'no-data-cat')  if not hasdatafromlocal and not short_links then  outtext = cmodule:getMessage(contLang:getCode(), 'no-data-text')  end  end  if not haswikidatalink then  category[#category+1] = cmodule:getMessage(contLang:getCode(), 'no-wikilink-cat')  if not hasdatafromlocal and not short_links then  outtext = cmodule:getMessage(contLang:getCode(), 'no-wikilink')  end  end  local nocategory = getArgument(frame, conf:a('arg-no-categories'))  category = #category>0 and "\n" .. table.concat(category,"\n") or ""  --mw.log("nocategory="..dump(nocategory).." and outtext="..dump(outtext).." and category="..dump(category))  outtext = outtext .. (nocategory and '' or category)  return outtext end  function p.getLanguageCode(frame)  local prop = getArgument(frame, conf:a('arg-properties'))  local output = getLanguageData(prop)  return table.concat(output, conf:a('mod-filter-separator')) end  return p