Wikipedia>Bouzinac at 18:06, 30 June 2018

2018-06-30T18:06:05Z

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require('Module:No globals');
local getArgs = require ('Module:Arguments').getArgs;
local lang = mw.language.getContentLanguage(); -- used for date formatting and validation
local namespace = mw.title.getCurrentTitle().namespace; -- used for categorization

local master = mw.loadData("Module:IATA and ICAO code/data")
local IATA_airport = master.IATA
local ICAO_airport = master.ICAO
local wikilink_label = master.WikiName

local p = {}

function p.count(frame)
local count = 0

for i, v in ipairs(frame.args) do
count=count+1 end
return count
end

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

Dates must be real. Returns true if date is a real date; false else.

Done this way because:
mw.language.getContentLanguage():formatDate('Y-m-d', '2018-02-31') should return an error but instead returns
2018-03-03

TODO: text for min/max years?

]]

local function is_valid_date (date)
local days_in_month = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; -- number of days in each month
local month_length;
local year, month, day;

year, month, day = date:match ('(%d%d%d%d)%-(%d%d)%-(%d%d)'); -- extract year, month, and day parts from date

if (year < lang:formatDate ('Y', 'now')) or (year > lang:formatDate ('Y', 'now+2year')) then
return false;
end

month = tonumber (month);
if (1 > month) or (12 < month) then -- check month
return false;
end

if (2==month) then -- if February
month_length = 28; -- then 28 days unless
if (0==(year%4) and (0~=(year%100) or 0==(year%400))) then -- a leap year
month_length = 29; -- in which case: 29 days in February
end
else
month_length=days_in_month[month]; -- else month length from table
end

day = tonumber (day);
if (1 > day) or ( month_length < day) then -- check day
return false;
end
return true; -- good day
end

--[[-------------------------< M A K E _ D A T E _ T Y P E _ S T R I N G >------------------------------------

decodes begin, resume, end service date type and date stamps and returns human readable text. Format is:
<type><date> where:
<type> is one of the three-character keywords:
beg - new service begins
res - service resumes after an interruption
end - service ends
<date> is a singe date or date-range similar in format to ISO 8601:
YYYY-MM-DD - a single YMD date may be begin, resume, or end date
YYYY-MM-DD/YYYY-MM-DD - a date range where the first date (left) is a start or resume date and the second (right) is an end date

returns nil and an error message if:
type keyword is not recognized
either date is invalid - dates must be real
begin or resume date falls on or after end date - events must begin/resume before they end

event dates that have already occurred (today's date follows a begin/resume/end date) are quitely muted. When this occurs
the function returns only an end date (if a date range and that event is still in the future). The function will add a hidden category
to articles with muted begin/resume/end dates.

]]

local function make_date_type_string (date_type, date, date2, ref, df)
local result = {};
local cat = '';
local today = lang:formatDate ('Y-m-d', 'today'); -- system date in ymd format as a text string

if not date_type or ('' == date_type) then -- if not set then this code isn't dated
return '', nil, ''; -- return empty string, no error message, empty string for category
end

if not is_valid_date (date) then -- dates must be valid
return nil, table.concat ({'invalid date: ', date}); -- return nil, an error message, category is nil but we don't care
end

if date2 then -- if date is a range
if 'end' == date_type then
return nil, 'date range not allowed for keyword \'end\''; -- :endYYYY-MM-DD/YYYY-MM-DD is nonsensical
end

if not is_valid_date (date2) then -- dates must be valid
return nil, table.concat ({'invalid date: ', date2}); -- return nil, an error message, category is nil but we don't care
end

if date >= date2 then -- start/resume dates must precede end dates
return nil, table.concat ({'invalid date order: ', date, '/', date2}); -- return nil, an error message, category is nil but we don't care
end
end

if date < today then -- if date has passed
date = nil; -- quietly hide expired dates
cat = '[[Category:Expired airport code]]'; -- (but categorize)
end

if date2 then -- if date is a range
if date2 < today then -- if date has passed
date2 = nil; -- quietly hide expired dates
cat = '[[Category:Expired airport code]]'; -- (but categorize)
end
end

date_type = date_type:lower(); -- make it case insensitive

if 'beg' == date_type then
if date then -- date may be nil here because it has already passed
table.insert (result, ' (begins '); -- begin date is today or in the future
elseif date2 then -- here when date has passed and date timestamp was a range
date = date2; -- begin date is in the past so event has already happened; convert date2 to end
date2 = nil; -- unset
table.insert (result, ' (ends '); -- range end date is today or in the future
end
elseif 'res' == date_type then
if date then
table.insert (result, ' (resumes '); -- resume date is today or in the future
elseif date2 then
date = date2; -- resume date is in the past so event has already happened; convert date2 to end
date2 = nil; -- unset
table.insert (result, ' (ends '); -- range end date is today or in the future
end
elseif 'end' == date_type then
if date then
table.insert (result, ' (ends '); -- end date is today or in the future
else
return nil; -- date has expired for an end date type; return nil as flag to hide this destination
end
else
return nil, table.concat ({'unexpected date type: ', date_type}); -- return nil, an error message, category is nil but we don't care
end

if date then -- define formatting strings for lang:formatDate()
if 'dmy' == df then
df = 'j F Y';
elseif 'mdy' == df then
df = 'F j, Y';
else
df = 'Y-m-d'; -- yeah, sort of pointless, but simple
end

table.insert (result, lang:formatDate (df, date)); -- reformat ymd to selected format according to |df=

if date2 then
table.insert (result, '; ends '); -- date2 always an end event
table.insert (result, lang:formatDate (df, date2)); -- reformat ymd to selected format according to |df=
end
end

if 0 ~= namespace then
cat = '' -- categorize articles in mainspace only
end

if 0 ~= #result then -- when there is date text,
table.insert (result, ref); -- reference goes just before we ...
table.insert (result, ')'); -- ... close the date text
return table.concat (result), nil, cat; -- return formatted date string, no error message, and category (if mainspace)
else
return '', nil, cat; -- return empty string for concatenation, no error message, and category (if mainspace)
end

end

--[=[-------------------------< C O M P >---------------------------------------------------------------------

Comparison funtion for table.sort() compares wikilink labels

[[wikilink target|wikilink label]]

]=]

local function comp (a, b)
local a_label = a:match ('^[^|]+|([^%]]+)%]%]'):lower(); -- extract the label from a
local b_label = b:match ('^[^|]+|([^%]]+)%]%]'):lower(); -- extract the label from b
return a_label < b_label;
end

--[=[--------------------------< M A I N >--------------------------------------------------------------------

returns a wikilink to the en.wiki article that matches the IATA or ICAO code provided in the call
example of data:
{'North America','USA','ABE','KABE','Lehigh Valley International Airport','Allentown/Bethlehem'},

{{#invoke:IATA and ICAO code|main|ABE}} returns
[[Lehigh Valley International Airport|Allentown/Bethlehem]]
or an error message

When there are multiple codes, returns comma separated, alpha ascending list of wikilinks or an error message.

]=]

function p.main(frame)
local args = getArgs(frame);
local results = {};
local code;
local date_type;
local date, date2;
local message;
local ref = '';
local cat = '';

for _, value in ipairs (args) do
value = mw.text.trim (value);
if value:match ('^(%a%a%a%a?) *: *(%a%a%a) *(%d%d%d%d%-%d%d%-%d%d) */ *(%d%d%d%d%-%d%d%-%d%d) *(.*)') then
code, date_type, date, date2, ref = value:match ('^(%a%a%a%a?) *: *(%a%a%a) *(%d%d%d%d%-%d%d%-%d%d) */ *(%d%d%d%d%-%d%d%-%d%d) *(.*)');
elseif value:match ('^(%a%a%a%a?) *: *(%a%a%a) *(%d%d%d%d%-%d%d%-%d%d) *(.*)') then
code, date_type, date, ref = value:match ('^(%a%a%a%a?) *: *(%a%a%a) *(%d%d%d%d%-%d%d%-%d%d) *(.*)');
elseif value:match ('^%a%a%a%a?$') then
code = value:match ('^%a%a%a%a?$');
else
return table.concat ({'error: malformed parameter value: ', value, ''});
end

ref = mw.text.trim (ref); -- remove extraneous white space; if ref is only white space, makes empty string
if '' ~= ref then
if not ref:match ('^\127[^\127]*UNIQ%-%-ref%-%x+%-QINU[^\127]*\127') then
return table.concat ({'error: extraneous reference text: ', ref, ''});
end
end

date_type, message, cat = make_date_type_string (date_type, date, date2, ref, args.df);

if message then -- if an error message, abandon
return table.concat ({'error: ', message, ''});
end

if date_type then -- nil when end date type has expired
code = code:upper(); -- force code to uppercase

if IATA_airport[code] then
table.insert (results, table.concat ({'[[', IATA_airport[code], '|', wikilink_label[code], ']]', date_type, cat})) -- make wikilink from iata code
elseif ICAO_airport[code] then
table.insert (results, table.concat ({'[[', ICAO_airport[code], '|', wikilink_label[code], ']]', date_type, cat})) -- make wikilink from icao code
else
return table.concat ({'error: data missing for code: ', code, ''});
end
end
date_type = nil; -- clear so we can reuse these
date = nil;
date2 = nil;
ref = '';
end

table.sort (results, comp); -- sort in ascending alpha order

local i = 1;
while i<#results do -- check for and remove duplicates
if results[i] == results[i+1] then -- compare
table.remove (results, i); -- remove the duplicate at results[i]; do not bump i
else
i = i + 1; -- not the same so bump i
end
end

return table.concat (results, ', '); -- make a comma separated list
end

--[[--------------------------< D U P L I C A T E _ C H E C K >------------------------------------------------

This function looks at IATA and ICAO code in Module:IATA and ICAO code/data. It attempts to locate invalid (by
length) codes and attempts to detect duplicate codes.

1 2 3 4
{'North America','USA','ABE','KABE','Lehigh Valley International Airport','Allentown/Bethlehem'},

]]

function p.duplicate_check ()
local iata_count_table = {};
local icao_count_table = {};

local _master = master._master

local iata = {}
local icao = {}

for i, v in ipairs(_master) do -- create tables from master
if '' ~= v[3] then -- iata codes TODO: length checking
if not iata[v[3]] then
iata[v[3]] = 1; -- state that this is the first time we've seen this code
else
iata[v[3]] = iata[v[3]] + 1; -- bump the count for this code
end
end
if '' ~= v[4] then -- iaco codes TODO: length checking
if not icao[v[4]] then
icao[v[4]] = 1; -- state that this is the first time we've seen this code
else
icao[v[4]] = icao[v[4]] + 1; -- bump the count for this code
end
end
end

for k, v in pairs (iata) do
if 1 < v then
table.insert (iata_count_table, table.concat ({k, ' (', v, '×)'}))
end
end

for k, v in pairs (icao) do
if 1 < v then
table.insert (icao_count_table, table.concat ({k, ' (', v, '×)'}))
end
end

local iata_msg = ''; -- error messages go here
local icao_msg = '';

if 0 ~= #iata_count_table then
iata_msg = table.concat ({'error: more than one IATA code: ', table.concat (iata_count_table, ', '), ''})
end
if 0 ~= #icao_count_table then
icao_msg = table.concat ({'error: more than one ICAO code: ', table.concat (icao_count_table, ', '), ''})
end

if (0 ~= #iata_count_table) or (0 ~= #icao_count_table) then -- TODO find a better way of doing this
return table.concat ({iata_msg, ' ', icao_msg})
end
return 'ok';
end

return p

Module:IATA and ICAO code - Revision history

Wikipedia>Bouzinac at 18:06, 30 June 2018