Mô đun:Webarchive

-- ----------------------------------

Lua module implementing the template.

A merger of the functionality of three templates: , and


----------------------------------------------------------------------------------

require('strict');
local getArgs = require ('Module:Arguments').getArgs;
local replace_vietnamese_date = require('Module:Citation/CS1/Date validation').replace_vietnamese_date

------------------------------------------------------------------

local categories = {}; -- category names
local config = {}; -- global configuration settings
local digits = {}; -- for i18n; table that translates local-wiki digits to western digits
local err_warn_msgs = {}; -- error and warning messages
local excepted_pages = {};
local month_num = {}; -- for i18n; table that translates local-wiki month names to western digits
local prefixes = {}; -- service provider tail string prefixes
local services = {}; -- archive service provider data from
local s_text = {}; -- table of static text strings used to build final rendering
local uncategorized_namespaces = {}; -- list of namespaces that we should not categorize
local uncategorized_subpages = {}; -- list of subpages that should not be categorized

--------------------------------------------------------------

local non_western_digits; -- boolean flag set true when data.digits.enable is true
local this_page = mw.title.getCurrentTitle();

local track = {}; -- Associative array to hold tracking categories
local ulx = {}; -- Associative array to hold template data

--------------------------------------------------------------------------------------

Populates numbered arguments in a message string using an argument table.

local function substitute (msg, args)
return args and mw.message.newRawMessage (msg, args):plain() or msg;
end

---------------------------------------------------

Given a 1-D table, return number of elements

local function tableLength(T)
local count = 0
for _ in pairs(T) do count = count + 1 end
return count
end

--[=[-----------------------------------------------------------------------------

Makes a wikilink; when both link and display text is provided, returns a wikilink in the form D; if only
link is provided, returns a wikilink in the form L; if neither are provided or link is omitted, returns an
empty string.

]=]

local function make_wikilink (link, display, no_link)
if nil == no_link then
if link and ( ~= link) then
if display and ( ~= display) then
return table.concat ({, display, });
else
return table.concat ({, link, });
end
end
return display or ; -- link not set so return the display text

else -- no_link
if display and ( ~= display) then -- if there is display text
return display; -- return that
else
return link or ; -- return the target article name or empty string
end
end
end

--[[-------------------------------------------------

Return data in track[] ie. tracking categories

]]

local function createTracking()
if not excepted_pages[this_page.fullText] then -- namespace:title/fragment is allowed to be categorized (typically this module's / template's testcases page(s))
if uncategorized_namespaces[this_page.nsText] then
return ; -- this page not to be categorized so return empty string
end
for _,v in ipairs (uncategorized_subpages) do -- cycle through page name patterns
if this_page.text:match (v) then -- test page name against each pattern
return ; -- this subpage type not to be categorized so return empty string
end
end
end

local out = {};
if tableLength(track) > 0 then
for key, _ in pairs(track) do -- loop through table
table.insert (out, make_wikilink (key)); -- and convert category names to links
end
end
return table.concat (out); -- concat into one big string; empty string if table is empty

end

---------------------------------------------------

Critical error. Render output completely in red. Add to tracking category.

This function called as the last thing before abandoning this module

local function inlineError (msg, args)
track[categories.error] = 1
return table.concat ({
'Error in ', -- open the error message span
config.tname, -- insert the local language template name
' template: ',
substitute (msg, args), -- insert the formatted error message
'.', -- close the span
createTracking() -- add the category
})
end

---------------------------------------------------

Render a text fragment in red, such as a warning as part of the final output.
Add tracking category.



local function inlineRed(msg, trackmsg)
if trackmsg == "warning" then
track[categories.warning] = 1;
elseif trackmsg == "error" then
track[categories.error] = 1;
end

return .. msg ..
end

---------------------------------------------------

Convert base-62 to base-10
Credit: https://de.wikipedia.org/wiki/Modul:Expr

local function base62( value )
local r = 1 -- default return value is input value is malformed

if value:match ('%W') then -- value must only be in the set [0-9a-zA-Z]
return; -- nil return when value contains extraneous characters
end

local n = value -- number of characters in value
local k = 1
local c
r = 0
for i = n, 1, -1 do -- loop through all characters in value from ls digit to ms digit
c = value:byte( i, i )
if c >= 48 and c = 65 and c --------------------------------------------------------

This function converts a Vietnamese date string into an English format, specifically handling structures
like "ngày 1 tháng 8 năm 2009" or "1 tháng 8 năm 2009" and transforming them into "1 August 2009." This
is accomplished by replacing Vietnamese date phrases with their English counterparts. It is especially
helpful for the decode_date() function, which determines whether the date provided matches archived
records from sources such as archive.today or the Wayback Machine.

]]

------------------------------------------------------------------------------------

Given a date string, return it in iso format along with an indicator of the date's format. Except that month names
must be recognizable as legitimate month names with proper capitalization, and that the date string must match one
of the recognized date formats, no error checking is done here; return nil else

local function decode_date (date_str)
date_str = replace_vietnamese_date(date_str) -- convert the input Vietnamese date from date_str before decoding, if it exists

local patterns = {
['dmy'] = {'^(%d%d?) +([^%s%d]+) +(%d%d%d%d)$', 'd', 'm', 'y'}, -- %a does not recognize unicode combining characters used by some languages
['mdy'] = {'^([^%s%d]+) (%d%d?), +(%d%d%d%d)$', 'm', 'd', 'y'},
['ymd'] = {'^(%d%d%d%d) +([^%s%d]+) (%d%d?)$', 'y', 'm', 'd'}, -- not mos compliant at en.wiki but may be acceptible at other wikis
};

local t = {};

if non_western_digits then -- this wiki uses non-western digits?
date_str = mw.ustring.gsub (date_str, '%d', digits); -- convert this wiki's non-western digits to western digits
end

if date_str:match ('^%d%d%d%d%-%d%d%-%d%d$') then -- already an iso format date, return western digits form
return date_str, 'dmy';
end

for k, v in pairs (patterns) do
local c1, c2, c3 = mw.ustring.match (date_str, patterns[k][1]); -- c1 .. c3 are captured but we don't know what they hold

if c1 then -- set on match
t = { -- translate unspecified captures to y, m, and d
[patterns[k][2]] = c1, -- fill the table of captures with the captures
[patterns[k][3]] = c2, -- take index names from src_pattern table and assign sequential captures
[patterns[k][4]] = c3,
};
if month_num[t.m] then -- when month not already a number
t.m = month_num[t.m]; -- replace valid month name with a number
else
return nil, 'dmy'; -- not a valid date form because month not valid
end

return mw.ustring.format ('%.4d-%.2d-%.2d', t.y, t.m, t.d), k; -- return date in iso format
end
end
return nil, 'dmy'; -- date could not be decoded; return nil and default iso date
end


---------------------------------------------------

Given year, month, day numbers, (zero-padded or not) return a full date in df format
where df may be one of:
mdy, dmy, iso, ymd

on entry, year, month, day are presumed to be correct for the date that they represent; all are required

in this module, makeDate() is sometimes given an iso-format date in year:
makeDate (2018-09-20, nil, nil, df)
this works because table.concat() sees only one table member

local function makeDate (year, month, day, df)
local format = {
['dmy'] = 'j F "năm" Y',
['mdy'] = 'j F "năm" Y',
['ymd'] = 'j F "năm" Y',
['iso'] = 'Y-m-d',
};

local date = table.concat ({year, month, day}, '-'); -- assemble year-initial numeric-format date (zero padding not required here)

if non_western_digits then -- this wiki uses non-western digits?
date = mw.ustring.gsub (date, '%d', digits); -- convert this wiki's non-western digits to western digits
end

return mw.getContentLanguage():formatDate (format[df], date);
end

--------------------------------------------------------------------------------

Returns true if date is after 31 December 1899 (why is 1900 the min year? shouldn't the internet's date-of-birth
be min year?), not after today's date, and represents a valid date (29 February 2017 is not a valid date). Applies
Gregorian leapyear rules.

all arguments are required

local function is_valid_date (year, month, day)
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
local month_length;
local y, m, d;
local today = os.date ('t'); -- fetch a table of current date parts

if not year or year or not month or month or not day or == day then
return false; -- something missing
end

y = tonumber (year);
m = tonumber (month);
d = tonumber (day);

if 1900 > y or today.year m or 12 d or month_length -----------------------

Given a URI-path to Webcite (eg. /67xHmVFWP) return the encoded date in df format

returns date string in df format - webcite date is a unix timestamp encoded as bae62
or the string 'query'

]]

local function decodeWebciteDate(path, df)

local dt = {};
local decode;

dt = mw.text.split(path, "/")

-- valid URL formats that are not base62

-- http://www.webcitation.org/query?id=1138911916587475
-- http://www.webcitation.org/query?url=http..&date=2012-06-01+21:40:03
-- http://www.webcitation.org/1138911916587475
-- http://www.webcitation.org/cache/73e53dd1f16cf8c5da298418d2a6e452870cf50e
-- http://www.webcitation.org/getfile.php?fileid=1c46e791d68e89e12d0c2532cc3cf629b8bc8c8e

if dt[2]:find ('query', 1, true) or
dt[2]:find ('cache', 1, true) or
dt[2]:find ('getfile', 1, true) or
tonumber(dt[2]) then
return 'query';
end

decode = base62(dt[2]); -- base62 string -> exponential number
if not decode then
return nil; -- nil return when dt[2] contains characters not in %w
end
dt = os.date('t', string.format("%d", decode):sub(1,10)) -- exponential number -> text -> first 10 characters (a unix timestamp) -> a table of date parts

decode = makeDate (dt.year, dt.month, dt.day, 'iso'); -- date comparisons are all done in iso format with western digits
if non_western_digits then -- this wiki uses non-western digits?
decode = mw.ustring.gsub (decode, '%d', digits); -- convert this wiki's non-western digits to western digits
end

return decode;
end

---------------------------------------------------

Given a URI-path to Wayback (eg. /web/20160901010101/http://example.com )
or Library of Congress Web Archives (eg. /all/20160901010101/http://example.com)
or Archive-It (eg. /all/20190621232545/http://example.com or /3348/20151201214156/http://example.com or /org-467/20191016094633/http://example.com)
or UK Government Web Archive (eg. /ukgwa/20160901010101/http://example.com or /tna/20160901010101/http://example.com)

return the formatted date eg. "September 1, 2016" in df format
Handle non-digits in snapshot ID such as "re_" and "-" and ""

returns two values:
first value is one of these:
valid date string in df format - wayback date is valid (including the text string 'index' when date is '//')
empty string - wayback date is malformed (less than 8 digits, not a valid date)
nil - wayback date is '/save/' or otherwise not a number

second return value is an appropriate 'message' may or may not be formatted

local function decodeWaybackDate(path, df)

local msg, snapdate;

snapdate = path:gsub ('^/web/', ):gsub ('^/all/', ):gsub ('^/%d%d%d%d?%d?/', ):gsub ('^/org%-%d%d%d%d?/', ):gsub ('^/ukgwa/', ):gsub ('^/tna/', ):gsub ('^/', ); -- remove leading /web/, /all/, //, /org-/, /ukgwa/, /tna/, or /
snapdate = snapdate:match ('^[^/]+'); -- get timestamp
if snapdate == "" then -- eg. /web//http.., etc.
return 'index'; -- return indicator that this url has an index date
end

snapdate = snapdate:gsub ('%a%a_%d?$', ):gsub ('%-', ); -- from date, remove any trailing "re_", dashes

msg = ;
if snapdate:match ('%$') then -- a trailing '' causes calendar display at archive .org
snapdate = snapdate:gsub ('%$', ); -- remove so not part of length calc later
msg = inlineRed (err_warn_msgs.ts_cal, 'warning'); -- make a message
end

if not tonumber(snapdate) then
return nil, 'ts_nan'; -- return nil (fatal error flag) and message selector
end

local dlen = snapdate:len();
if dlen -----------------------

Given an Archive.is "long link" URI-path (e.g. /2016.08.28-144552/http://example.com)
return the date in df format (e.g. if df = dmy, return 28 August 2016)
Handles "." and "-" in snapshot date, so 2016.08.28-144552 is same as 20160828144552

returns two values:
first value is one of these:
valid date string in df format - archive.is date is valid (including the text string 'short link' when url is the short form)
empty string - wayback date is malformed (not a number, less than 8 digits, not a valid date)
nil - wayback date is '/save/'

second return value is an appropriate 'message' may or may not be formatted

]]

local function decodeArchiveisDate(path, df)
local snapdate

if path:match ('^/%w+$') then -- short form url path is '/' followed by some number of base 62 digits and nothing else
return "short link" -- e.g. http://archive.is/hD1qz
end

snapdate = mw.text.split (path, '/')[2]:gsub('[%.%-]', ); -- get snapshot date, e.g. 2016.08.28-144552; remove periods and hyphens

local dlen = string.len(snapdate)
if dlen -----------------------

Given a domain extracted by mw.uri.new() (eg. web.archive.org) set tail string and service ID

]]

local function serviceName(host, no_link)
local tracking;
local index;

host = host:lower():gsub ('^web%.(.+)', '%1'):gsub ('^www%.(.+)', '%1'); -- lowercase, remove web. and www. subdomains

if services[host] then
index = host;
else
for k, _ in pairs (services) do
if host:find ('%f[%a]'..k:gsub ('([%.%-])', '%%%1')) then
index = k;
break;
end
end
end

if index then
local out = {}; -- empty string in [1] so that concatenated result has leading single space
ulx.url1.service = services[index][4] or 'other';
tracking = services[index][5] or categories.other;
-- build tail string
if false services[index][1] then -- select prefix
table.insert (out, prefixes.at);
elseif true services[index][1] then
table.insert (out, prefixes.atthe);
else
table.insert (out, services[index][1]);
end

table.insert (out, make_wikilink (services[index][2], services[index][3], no_link)); -- add article wikilink
if services[index][6] then -- add tail postfix if it exists
table.insert (out, services[index][6]);
end

ulx.url1.tail = table.concat (out, ' '); -- put it all together; result has leading space character

else -- here when unknown archive
ulx.url1.service = 'other';
tracking = categories.unknown;
ulx.url1.tail = table.concat ({, prefixes.at, host, inlineRed (err_warn_msgs.unknown_url, error)}, ' ');
end

track[tracking] = 1
end

---------------------------------------------------

Parse numbered arguments starting at 2, such as url2..url10, date2..date10, title2..title10
For example:
Three url arguments not in numeric sequence (1..4..7).
Function only processes arguments numbered 2 or greater (in this case 4 and 7)
It creates numeric sequenced table entries like:
urlx.url2.url =
urlx.url3.url =
Returns the number of URL arguments found numbered 2 or greater (in this case returns "2")



local function parseExtraArgs(args)

local i, j, argurl, argurl2, argdate, argtitle

j = 2
for i = 2, config.maxurls do
argurl = "url" .. i
if args[argurl] then
argurl2 = "url" .. j
ulx[argurl2] = {}
ulx[argurl2]["url"] = args[argurl]
argdate = "date" .. i
if args[argdate] then
ulx[argurl2]["date"] = args[argdate]
else
ulx[argurl2]["date"] = inlineRed (err_warn_msgs.date_miss, 'warning');
end

argtitle = "title" .. i
if args[argtitle] then
ulx[argurl2]["title"] = args[argtitle]
else
ulx[argurl2]["title"] = nil
end
j = j + 1
end
end

if j == 2 then
return 0
else
return j - 2
end
end

---------------------------------------------------

Given a date string, return "," if it's MDY

local function comma(date)
return (date and date:match ('%a+ +%d%d?(,) +%d%d%d%d')) or ;
end

--[[-------------------------------------------------

Return a rendering of the data in ulx[][]

]]

local function createRendering()

local displayfield
local out = {};

local index_date, msg = ulx.url1.date:match ('(index)(.)'); -- when ulx.url1.date extract 'index' text and message text (if there is a message)
ulx.url1.date = ulx.url1.date:gsub ('index.', 'lưu trữ'); -- remove message

if 'none' ulx.url1.format then -- For ,
table.insert (out, '['); -- open extlink markup
table.insert (out, ulx.url1.url); -- add url

if ulx.url1.title then
table.insert (out, ' ') -- the required space
table.insert (out, ulx.url1.title) -- the title
table.insert (out, ']'); -- close extlink markup
table.insert (out, ulx.url1.tail); -- tail text
if ulx.url1.date then
table.insert (out, '&32;('); -- open date text; TODO: why the html entity? replace with regular space?
table.insert (out, 'lưu trữ' ulx.url1.date and s_text.archive or s_text.archived); -- add text
table.insert (out, ' '); -- insert a space
table.insert (out, ulx.url1.date); -- add date
table.insert (out, ')'); -- close date text
end
else -- no title
if index_date then -- when url date is 'index'
table.insert (out, table.concat ({' ', s_text.Archive_index, ']'})); -- add the index link label
table.insert (out, msg or ); -- add date mismatch message when url date is // and |date= has valid date
else
table.insert (out, table.concat ({' ', s_text.Archived, '] ngày '})); -- add link label for url has timestamp date (will include mismatch message if there is one)
end
if ulx.url1.date then
if 'lưu trữ' ~= ulx.url1.date then
table.insert (out, ulx.url1.date); -- add date when data is not 'index'
end
table.insert (out, comma(ulx.url1.date)); -- add ',' if date format is mdy
table.insert (out, ulx.url1.tail); -- add tail text
else -- no date
table.insert (out, ulx.url1.tail); -- add tail text
end
end

if 0 --------------------------------------

for internaltionalization, translate local-language parameter names to their English equivalents

TODO: return error message if multiple aliases of the same canonical parameter name are found?

returns two tables:
new_args - holds canonical form parameters and their values either from translation or because the parameter was already in canonical form
origin - maps canonical-form parameter names to their untranslated (local language) form for error messaging in the local language

unrecognized parameters are ignored

]]

local function parameter_name_xlate (args, params, enum_params)
local name; -- holds modifiable name of the parameter name during evaluation
local enum; -- for enumerated parameters, holds the enumerator during evaluation
local found = false; -- flag used to break out of nested for loops
local new_args = {}; -- a table that holds canonical and translated parameter k/v pairs
local origin = {}; -- a table that maps original (local language) parameter names to their canonical name for local language error messaging
local unnamed_params; -- set true when unsupported positional parameters are detected

for k, v in pairs (args) do -- loop through all of the arguments in the args table
name = k; -- copy of original parameter name

if 'string' == type (k) then
if non_western_digits then -- true when non-western digits supported at this wiki
name = mw.ustring.gsub (name, '%d', digits); -- convert this wiki's non-western digits to western digits
end

enum = name:match ('%d+$'); -- get parameter enumerator if it exists; nil else

if not enum then -- no enumerator so looking for non-enumnerated parameters
-- TODO: insert shortcut here? if params[name] then name holds the canonical parameter name; no need to search further
for pname, aliases in pairs (params) do -- loop through each parameter the params table
for _, alias in ipairs (aliases) do -- loop through each alias in the parameter's aliases table
if name == alias then
new_args[pname] = v; -- create a new entry in the new_args table
origin [pname] = k; -- create an entry to make canonical parameter name to original local language parameter name
found = true; -- flag so that we can break out of these nested for loops
break; -- no need to search the rest of the aliases table for name so go on to the next k, v pair
end
end

if found then -- true when we found an alias that matched name
found = false; -- reset the flag
break; -- go do next args k/v pair
end
end
else -- enumerated parameters
name = name:gsub ('%d$', ''); -- replace enumeration digits with place holder for table search
-- TODO: insert shortcut here? if num_params[name] then name holds the canonical parameter name; no need to search further
for pname, aliases in pairs (enum_params) do -- loop through each parameter the num_params table
for _, alias in ipairs (aliases) do -- loop through each alias in the parameter's aliases table
if name == alias then
pname = pname:gsub ('$', enum); -- replace the '' place holder with the actual enumerator
new_args[pname] = v; -- create a new entry in the new_args table
origin [pname] = k; -- create an entry to make canonical parameter name to original local language parameter name
found = true; -- flag so that we can break out of these nested for loops
break; -- no need to search the rest of the aliases table for name so go on to the next k, v pair
end
end

if found then -- true when we found an alias that matched name
found = false; -- reset the flag
break; -- go do next args k/v pair
end
end
end
else
unnamed_params = true; -- flag for unsupported positional parameters
end
end -- for k, v
return new_args, origin, unnamed_params;
end

--------------------------------------------------------------------------------------

template entry point

local function webarchive(frame)
local args = getArgs (frame);

local data = mw.loadData (table.concat ({ -- make a data module name; sandbox or live
'Module:Webarchive/data',
frame:getTitle():find('sandbox', 1, true) and '/sandbox' or -- this instance is ./sandbox then append /sandbox
}));
categories = data.categories; -- fill in the forward declarations
config = data.config;
if data.digits.enable then
digits = data.digits; -- for i18n; table of digits in the local wiki's language
non_western_digits = true; -- use_non_western_digits
end
err_warn_msgs = data.err_warn_msgs;
excepted_pages = data.excepted_pages;
month_num = data.month_num; -- for i18n; table of month names in the local wiki's language
prefixes = data.prefixes;
services = data.services;
s_text = data.s_text;
uncategorized_namespaces = data.uncategorized_namespaces;
uncategorized_subpages = data.uncategorized_subpages;

local origin = {}; -- holds a map of English to local language parameter names used in the current template; not currently used
local unnamed_params; -- boolean set to true when template call has unnamed parameters
args, origin, unnamed_params = parameter_name_xlate (args, data.params, data.enum_params); -- translate parameter names in args to English

local date, format, msg, udate, uri, url;
local ldf = 'dmy'; -- when there is no |date= parameter, render url dates in iso format

if args.url and args.url1 then -- URL argument (first)
return inlineError (data.crit_err_msgs.conflicting, {origin.url, origin.url1});
end

url = args.url or args.url1;

if not url then
return inlineError (data.crit_err_msgs.empty);
end
-- these iabot bugs perportedly fixed; removing these causes lua script error
--[[ -- at Template:Webarchive/testcases/Production; resolve that before deleting these tests
if mw.ustring.find( url, "https://web.http", 1, true ) then -- track bug - TODO: IAbot bug; not known if the bug has been fixed; deferred
track[categories.error] = 1;
return inlineError (data.crit_err_msgs.iabot1);
end
if url == "https://web.archive.org/http:/" then -- track bug - TODO: IAbot bug; not known if the bug has been fixed; deferred
track[categories.error] = 1;
return inlineError (data.crit_err_msgs.iabot2);
end
]]

if not (url:lower():find ('^http') or url:find ('^//')) then
return inlineError (data.crit_err_msgs.invalid_url );
end

ulx.url1 = {}
ulx.url1.url = url

ulx.url1.extraurls = parseExtraArgs(args)

local good = false;
good, uri = pcall (mw.uri.new, ulx.url1.url); -- get a table of uri parts from this url; protected mode to prevent lua error when ulx.url1.url is malformed

if not good or nil == uri.host then -- abandon when ulx.url1.url is malformed
return inlineError (data.crit_err_msgs.invalid_url);
end

serviceName(uri.host, args.nolink)

if args.date and args.date1 then -- Date argument
return inlineError (data.crit_err_msgs.conflicting, {origin.date, origin.date1});
end

date = args.date or args.date1;
date = date and date:gsub (' +', ' '); -- replace multiple spaces with a single space

if date and config.verifydates then
if '' == date then
date = 'index';
ldf = 'iso'; -- set to default format
elseif 'mdy' == date then
date = nil; -- if date extracted from URL,
ldf = 'mdy'; -- then |date=mdy overrides iso
elseif 'dmy' == date then
date = nil; -- if date extracted from URL,
ldf = 'dmy'; -- then |date=dmy overrides iso
elseif 'ymd' == date then
date = nil; -- if date extracted from URL,
ldf = 'ymd'; -- then |date=ymd overrides iso
else
date, ldf = decode_date (date); -- get an iso format date from date and get date's original format
end
end

if 'wayback' ulx.url1.service or 'locwebarchives' ulx.url1.service or 'archiveit' ulx.url1.service or 'ukgwa' ulx.url1.service then
if date then
if config.verifydates then
if ldf then
udate, msg = decodeWaybackDate (uri.path); -- get the url date in iso format and format of date in |date=; 'index' when wayback url date is
if not udate then -- this is the only 'fatal' error return
return inlineError (data.crit_err_msgs[msg]);
end

if udate ~= date then -- date comparison using iso format dates
date = udate;
msg = table.concat ({
inlineRed (err_warn_msgs.mismatch, 'warning'), -- add warning message
msg, -- add message if there is one
});
end
end
end
else -- no |date=
udate, msg = decodeWaybackDate (uri.path);

if not udate then -- this is the only 'fatal' error return
return inlineError (data.crit_err_msgs[msg]);
end

if == udate then
date = nil; -- unset
else
date = udate;
end
end

elseif 'webcite' == ulx.url1.service then
if date then
if config.verifydates then
if ldf then
udate = decodeWebciteDate (uri.path); -- get the url date in iso format
if 'query' ~= udate then -- skip if query
if udate ~= date then -- date comparison using iso format dates
date = udate;
msg = table.concat ({
inlineRed (err_warn_msgs.mismatch, 'warning'),
});
end
end
end
end
else
date = decodeWebciteDate( uri.path, "iso" )
if date == "query" then
date = nil; -- unset
msg = inlineRed (err_warn_msgs.date_miss, 'warning');
elseif not date then -- invalid base62 string
date = inlineRed (err_warn_msgs.date1, 'error');
end
end

elseif 'archiveis' == ulx.url1.service then
if date then
if config.verifydates then
if ldf then
udate, msg = decodeArchiveisDate (uri.path) -- get the url date in iso format
if 'short link' ~= udate then -- skip if short link
if udate ~= date then -- date comparison using iso format dates
date = udate;
msg = table.concat ({
inlineRed (err_warn_msgs.mismatch, 'warning'), -- add warning message
msg, -- add message if there is one
});
end
end
end
end
else -- no |date=
udate, msg = decodeArchiveisDate( uri.path, "iso" )
if udate == "short link" then
date = nil; -- unset
msg = inlineRed (err_warn_msgs.date_miss, 'warning');
elseif == udate then
date = nil; -- unset
else
date = udate;
end
end

else -- some other service
if not date then
msg = inlineRed (err_warn_msgs.date_miss, 'warning');
end
end

if 'index' == date then
ulx.url1.date = date .. (msg or ); -- create index + message (if there is one)
elseif date then
ulx.url1.date = makeDate (date, nil, nil, ldf) .. (msg or ); -- create a date in the wiki's local language + message (if there is one)
else
ulx.url1.date = msg;
end

format = args.format; -- Format argument

if not format then
format = "none"
else
for k, v in pairs (data.format_vals) do -- |format= accepts two specific values loop through a table of those values
local found; -- declare a nil flag
for _, p in ipairs (v) do -- loop through local language variants
if format == p then -- when |format= value matches
format = k; -- use name from table key
found = true; -- declare found so that we can break out of outer for loop
break; -- break out of inner for loop
end
end

if found then
break;
end
end

if format == "addlpages" then
if not ulx.url1.date then
format = "none"
end
elseif format == "addlarchives" then
format = "addlarchives"
else
format = "none"
end
end
ulx.url1.format = format

if args.title and args.title1 then -- Title argument
return inlineError (data.crit_err_msgs.conflicting, {origin.title, origin.title1});
end

ulx.url1.title = args.title or args.title1;

local rend = createRendering()
if not rend then
return inlineError (data.crit_err_msgs.unknown);
end

return rend .. ((unnamed_params and inlineRed (err_warn_msgs.unnamed_params, 'warning')) or ) .. createTracking();

end

----------------------------------------------------------------------

return {webarchive = webarchive};