Module:Navseasoncats
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local p = {}
local errors = ''
local nexistingcats = 0
local currtitle = mw.title.getCurrentTitle()
local testcases = (currtitle.subpageText == 'testcases')
local navborder = true --whether or not a border is displayed
--[[==========================================================================]]
--[[ Utility & category functions ]]
--[[==========================================================================]]
--Error message handling
function errorclass( msg )
return mw.text.tag( 'span', {class='error mw-ext-cite-error'}, '<b>Error!</b> '..string.gsub(msg, '&#', '&#') )
end
--Returns a colon if on a testcase subpage
function testcasecolon()
if testcases then return ':' end
return ''
end
--Consolidate avoidance checks
function avoidself()
return (currtitle.text ~= 'Navseasoncats' and --avoid self
currtitle.text ~= 'Navseasoncats/doc' and --avoid self
currtitle.text ~= 'Navseasoncats/sandbox' and --avoid self
(currtitle.nsText ~= 'Template' or testcases)) --avoid nested transclusion errors (i.e. {{Infilmdecade}})
end
--Failure handling
function failedcat( errors, sortkey )
if avoidself() then
return (errors or '')..'***Navseasoncats failed to generate navbox***'..
'[['..testcasecolon()..'Category:Navseasoncats failed to generate navbox|'..(sortkey or 'O')..']]'
end
return ''
end
--Check for nav*() navigational isolation (not necessarily an error)
function isolatedcat()
if nexistingcats == 0 and avoidself() then
return '[['..testcasecolon()..'Category:Navseasoncats isolated]]'
end
return ''
end
--Check for navhyphen default gap size + isolatedcat() (not necessarily an error)
function defaultgapcat( bool )
if bool and nexistingcats == 0 and avoidself() then
--using "nexistingcats > 0" isn't as useful, since the default gap size obviously worked
return '[['..testcasecolon()..'Category:Navseasoncats default season gap size]]'
end
return ''
end
--Similar to {{LinkCatIfExists2}}: make a piped link to a category, if it exists;
--if it doesn't exist, just display the greyed link title without linking
function catlink( catname, disp )
catname = mw.text.trim(catname or '')
disp = mw.text.trim(disp or '')
local grey = '#888'
local displaytext = catname
if disp ~= '' then
--use 'disp' parameter instead, and strip any trailing disambiguator
displaytext = mw.ustring.gsub(disp, '%s+%(.+$', '');
end
local catpage = mw.title.new( catname, 'Category' )
if catpage.exists then
--TODO?: ignore cat #Rs: see 2019 link on nav @ Category:2018 Asian Games
--isRedirect did not change expensive function count (b/c catname passed instead of id?),
--but isRedirect also did not recognize {{Category redirect}},
--and it's not worth calling & parsing getContent, so TODONT
nexistingcats = nexistingcats + 1
return '[[:Category:'..catname..'|'..displaytext..']]'
else
return '<span style="color:'..grey..'">'..displaytext..'</span>'
end
end
--12 -> 12th, etc.
--Used in navordinal() only
function addord( i )
if tonumber(i) then
local s = tostring(i)
local tens = string.match(s, '1%d$')
if tens then return s..'th' end
local ones = string.match(s, '%d$')
if ones == '1' then return s..'st'
elseif ones == '2' then return s..'nd'
elseif ones == '3' then return s..'rd' end
return s..'th'
end
return i
end
--Returns an unsigned string of the 1-4 digit decade ending in "0", else error
--Used in navdecade() only
function sterilizedec( decade )
if decade == nil then return nil end
local dec = string.match(decade, '^[-%+]?(%d?%d?%d?0)$') or
string.match(decade, '^[-%+]?(%d?%d?%d?0)[^%d]')
if dec then
return dec
else
local decade_fixed234 = string.match(decade, '^[-%+]?(%d%d?%d?)%d[^%d]') or
string.match(decade, '^[-%+]?(%d%d?%d?)%d$')
local decade_fixed1 = string.match(decade, '^[-%+]?(%d)[^%d]') or
string.match(decade, '^[-%+]?(%d)$')
if decade_fixed234 then
return decade_fixed234..'0'
elseif decade_fixed1 then
return '0'
else
errors = 'sterilizedec() error'
return nil
end
end
end
--[[==========================================================================]]
--[[ Formerly separated templates/modules ]]
--[[==========================================================================]]
--[[============================={{ navyear }}==============================]]
function navyear( firstpart, year, lastpart, minimumyear, maximumyear )
--Expects a PAGENAME of the form "Some sequential 1760 example cat", where
-- {{{1}}}=Some sequential
-- {{{2}}}=1760
-- {{{3}}}=example cat
-- {{{4}}}=1758 ('min' year parameter; optional)
-- {{{5}}}=1800 ('max' year parameter; optional)
year = tonumber(year) or tonumber(mw.ustring.match(year or '', '^%s*(%d*)'))
local minyear = tonumber(string.match(minimumyear or '', '-?%d+')) or -9999 --allow +/- qualifier
local maxyear = tonumber(string.match(maximumyear or '', '-?%d+')) or 9999 --allow +/- qualifier
if string.match(minimumyear or '', 'BC') then minyear = -math.abs(minyear) end --allow BC qualifier (AD otherwise assumed)
if string.match(maximumyear or '', 'BC') then maxyear = -math.abs(maxyear) end --allow BC qualifier (AD otherwise assumed)
if year == nil then
errors = errorclass('Function navyear can\'t recognize the year sent to its 2nd parameter.')
return failedcat(errors, 'Y')
end
--AD/BC switches & vars
local yearBCElastparts = { --needed for parent = AD 1-5, when the BC/E format is unknown
--"BCE" removed to match both AD & BCE cats; easier & faster than multiple string.match()s
['example_Hebrew people_example'] = 'BCE', --example entry format; add to & adjust as needed
}
local parentAD = string.match(firstpart, 'AD$') --following the "AD 1" convention from AD 1 to AD 10
local parentBC = string.match(lastpart, '^BCE?') --following the "1 BC" convention for all years BC
firstpart = mw.ustring.gsub(firstpart, '%s*AD$', '') --handle AD/BC separately for easier & faster accounting
lastpart = mw.ustring.gsub(lastpart, '^BCE?%s*', '')
local BCe = parentBC or yearBCElastparts[lastpart] or 'BC' --"BC" default
local year1to15AD = (year >= 1 and year <= 15 and not parentBC) --special behavior in this range
local switchADBC = 1 -- 1=AD parent
if parentBC then switchADBC = -1 end -- -1=BC parent; possibly adjusted later
local Y = 0 --secondary iterator for AD-on-a-BC-parent
if minyear > year*switchADBC then minyear = year*switchADBC end --input error; minyear should be <= parent
if maxyear < year*switchADBC then maxyear = year*switchADBC end --input error; maxyear should be >= parent
--determine interyear gap size to condense special category types, if possible
local ygapdefault = 1 --assume/start at the most common case: 2001, 2002, etc.
local ygap = ygapdefault
if string.match(lastpart, 'presidential') then
local ygap1, ygap2 = ygapdefault, ygapdefault --need to determine previous & next year gaps indepedently
local ygap1_success, ygap2_success = false, false
local prevseason = nil
while ygap1 <= 5 do --Czech Republic, Poland, Sri Lanka, etc. have 5-year terms
prevseason = firstpart..' '..(year-ygap1)..' '..lastpart
if mw.title.new(prevseason, 'Category').exists then
ygap1_success = true
break
end
ygap1 = ygap1 + 1
end
local nextseason = nil
while ygap2 <= 5 do --Czech Republic, Poland, Sri Lanka, etc. have 5-year terms
nextseason = firstpart..' '..(year+ygap2)..' '..lastpart
if mw.title.new(nextseason, 'Category').exists then
ygap2_success = true
break
end
ygap2 = ygap2 + 1
end
if ygap1_success and ygap2_success then
if ygap1 == ygap2 then ygap = ygap1 end
elseif ygap1_success then ygap = ygap1
elseif ygap2_success then ygap = ygap2
end
end
--begin navyears
local navy = '{| class="toccolours hlist" style="text-align: center; margin: auto;"\n'..'|\n'
local i = -5
while i <= 5 do
local y = year + i*ygap*switchADBC
local BCdisp = ''
if i ~= 0 then --left/right navy
local AD = ''
local BC = ''
if year1to15AD then
if year >= 11 then --parent = 11-15 AD
if y <= 10 then --prepend AD on y = 1-10 cats only, per existing cats
AD = 'AD '
end
elseif year >= 1 then --parent = 1-10 AD
if y <= 0 then
BC = BCe..' '
y = math.abs(y - 1) --skip y = 0 (DNE)
elseif y >= 1 and y <= 10 then --prepend AD on y = 1-10 cats only, per existing cats
AD = 'AD '
end
end
elseif parentBC then
if switchADBC == -1 then --displayed y is in the BC regime
if y >= 1 then --the common case
BC = BCe..' '
elseif y == 0 then --switch from BC to AD regime
switchADBC = 1
end
end
if switchADBC == 1 then --displayed y is now in the AD regime
Y = Y + 1 --skip y = 0 (DNE)
y = Y --easiest solution: start another iterator for these AD ys displayed on a BC year parent
AD = 'AD '
end
end
if BC ~= '' and year <= 5 then --only show 'BC' for parent years <= 5: saves room, easier to read,
BCdisp = ' '..BCe --and 6 is the first/last nav year that doesn't need a disambiguator;
end --the center/parent year will always show BC, so no need to show it another 10x
--populate left/right navy
local ysign = y --use y for display & ysign for logic
if BC ~= '' then ysign = -ysign end
if (minyear <= ysign) and (ysign <= maxyear) then -- ex: 1758, 1759, 1761, 1762, 1763, 1764, 1765
navy = navy..'*'..catlink( firstpart..' '..AD..y..' '..BC..lastpart, y..BCdisp )..'\n'
else -- ex: 1755, 1756, 1757
navy = navy..'*<span style="visibility:hidden">'..y..BCdisp..'</span>\n'
end
else --center navy; ex: 1760
if parentBC then BCdisp = ' '..BCe end
navy = navy..'*<b>'..year..BCdisp..'</b>\n'
end
i = i + 1
end
return navy..'|}'..isolatedcat()
end
--[[============================{{ navdecade }}=============================]]
function navdecade( firstpart, decade, lastpart, mindecade, maxdecade )
--Expects a PAGENAME of the form "Some sequential 2000 example cat", where
-- {{{1}}}=Some sequential
-- {{{2}}}=2000
-- {{{3}}}=example cat
--and
-- {{{4}}}=1800 ('min' decade parameter; optional)
-- {{{5}}}=2020 ('max' decade parameter; optional; defaults to next decade)
--sterilize dec
local dec = sterilizedec(decade)
if errors ~= '' then
errors = errorclass('Function navdecade was sent "'..(decade or '')..'" as its 2nd parameter, '..
'but expects a 1 to 4-digit year ending in "0".')
return failedcat(errors, 'D')
end
local ndec = tonumber(dec)
--sterilize mindecade & determine AD/BC
local mindefault = '-9999'
local mindec = sterilizedec(mindecade) --returns a tostring(unsigned int), or nil + error
if mindec then
if string.match(mindecade, '-%d') or
string.match(mindecade, 'BC')
then
mindec = '-'..mindec --better +/-0 behavior with strings (0-initialized int == "-0" string...)
end
elseif errors ~= '' then
errors = errorclass('Function navdecade was sent "'..(mindecade or '')..'" as its 4th parameter, '..
'but expects a 1 to 4-digit year ending in "0", the earliest decade to be shown.')
return failedcat(errors, 'E')
else
mindec = mindefault --tonumber() later, after error checks
end
--sterilize maxdecade & determine AD/BC
local maxdefault = '9999'
local maxdec = sterilizedec(maxdecade) --returns a tostring(unsigned int), or nil + error
if maxdec then
if string.match(maxdecade, '-%d') or
string.match(maxdecade, 'BC')
then --better +/-0 behavior with strings (0-initialized int == "-0" string...),
maxdec = '-'..maxdec --but a "-0" string -> tonumber() -> tostring() = "-0",
end --and a "0" string -> tonumber() -> tostring() = "0"
elseif errors ~= '' then
errors = errorclass('Function navdecade was sent "'..(maxdecade or '')..'" as its 5th parameter, '..
'but expects a 1 to 4-digit year ending in "0", the highest decade to be shown.')
return failedcat(errors, 'F')
else
maxdec = maxdefault
end
local tspace = ' ' --assume trailing space for "1950s in X"-type cats
if string.match(lastpart, '^-') then tspace = '' end --DNE for "1970s-related"-type cats
--AD/BC switches & vars
local parentBC = string.match(lastpart, '^BC') --following the "0s BC" convention for all years BC
lastpart = mw.ustring.gsub(lastpart, '^BC%s*', '') --handle BC separately; AD never used
--TODO?: handle BCE, but only if it exists in the wild
local dec0to40AD = (ndec >= 0 and ndec <= 40 and not parentBC) --special behavior in this range
local switchADBC = 1 -- 1=AD parent
if parentBC then switchADBC = -1 end -- -1=BC parent; possibly adjusted later
local BCdisp = ''
local D = -math.huge --secondary switch & iterator for AD/BC transition
--check non-default min/max more carefully; determine right-offset
local roffset = 0
if mindec ~= mindefault then
if tonumber(mindec) > ndec*switchADBC then
mindec = tostring(ndec*switchADBC) --input error; mindec should be <= parent
end
end
if maxdec ~= maxdefault then --a non-default max will override offsetting behavior
if tonumber(maxdec) < ndec*switchADBC then
maxdec = tostring(ndec*switchADBC) --input error; maxdec should be >= parent
end
else --offset only if max == maxdefault
local thisyear = mw.getContentLanguage():formatDate( 'Y' )
local nthisdecade = tonumber(string.match(thisyear, '^%d%d%d')..'0')
local diff = nthisdecade - ndec*switchADBC --in 2019: diff=30 for 1980; diff=0 for 2010; diff = -20 for 2030
if diff < 0 then diff = 0 end --always show at least 1 decade ahead for present-decade+ cats
if diff >= 0 and diff <= 30 then
roffset = 40 - diff --in 2019: offset=10 for 1980; offset=40 for 2010; offset=40 for 2030
end
end
local nmindec = tonumber(mindec) --similar behavior to navyear & navordinal
local nmaxdec = tonumber(maxdec) --similar behavior to navordinal
--begin navdecade
local bnb = '' --border/no border
if navborder == false then --for embedding in {{Navseasoncats with decades below year}}
bnb = ' border-style: none; background-color: transparent;'
end
local navd = '{| class="toccolours hlist" style="text-align: center; margin: auto;'..bnb..'"\n'..'|\n'
local i = (-50 - roffset)
while i <= (50 - roffset) do
local d = ndec + i*switchADBC
if i ~= 0 then --left/right navd
local BC = ''
BCdisp = ''
if dec0to40AD then
if D < -10 then
d = math.abs(d + 10) --b/c 2 "0s" decades exist: "0s BC" & "0s" (AD)
BC = 'BC '
if d == 0 then
D = -10 --track 1st d = 0 use (BC)
end
elseif D >= -10 then
D = D + 10 --now iterate from 0s AD
d = D --2nd d = 0 use
end
elseif parentBC then
if switchADBC == -1 then --parentBC looking at the BC side (the common case)
BC = 'BC '
if d == 0 then --prepare to switch to the AD side on the next iteration
switchADBC = 1 --1st d = 0 use (BC)
D = -10 --prep
end
elseif switchADBC == 1 then --switched to the AD side
D = D + 10 --now iterate from 0s AD
d = D --2nd d = 0 use (on first use)
end
end
if BC ~= '' and ndec <= 50 then
BCdisp = ' BC' --show BC for all BC decades whenever a "0s" is displayed on the nav
end
--populate left/right navd
local hidden = '*<span style="visibility:hidden">'..d..'s'..BCdisp..'</span>\n'
local shown = '*'..catlink( firstpart..' '..d..'s'..tspace..BC..lastpart, d..'s'..BCdisp )..'\n'
local dsign = d --use d for display & dsign for logic
if BC ~= '' then dsign = -dsign end
if (nmindec <= dsign) and (dsign <= nmaxdec) then
if dsign == 0 and (nmindec == 0 or nmaxdec == 0) then --distinguish b/w -0 (BC) & 0 (AD)
--"zoom in" on +/- 0 and turn dsign/min/max temporarily into +/- 1 for easier processing
local zsign, zmin, zmax = 1, nmindec, nmaxdec
if BC ~= '' then zsign = -1 end
if mindec == '-0' then zmin = -1
elseif mindec == '0' then zmin = 1 end
if maxdec == '-0' then zmax = -1
elseif maxdec == '0' then zmax = 1 end
if (zmin <= zsign) and (zsign <= zmax) then
navd = navd..shown
else
navd = navd..hidden
end
else
navd = navd..shown --the common case
end
else
navd = navd..hidden
end
else --center navd
if D >= -10 then
D = D + 10 --housekeeping b/w left/right sides
end
if parentBC then
BCdisp = ' BC'
if ndec == 0 then
switchADBC = 1 --next element will be 0s AD
D = -10 --for this special case, D is still -inf
end
else
BCdisp = ''
end
navd = navd..'*<b>'..dec..'s'..BCdisp..'</b>\n'
end
i = i + 10
end
return navd..'|}'..isolatedcat()
end
--[[============================{{ navhyphen }}=============================]]
function navhyphen( start, hyph, ish, firstpart, lastpart, minseas, maxseas, testgap )
--Expects a PAGENAME of the form "Some sequential 2015–16 example cat", where
-- {{{1}}}=2015
-- {{{2}}}=–
-- {{{3}}}=16 (for "1999-2000", "2000" must be truncated so {{{3}}} is "00")
-- {{{4}}}=Some sequential
-- {{{5}}}=example cat
-- {{{6}}}=1800 ('min' starting season shown; optional)
-- {{{7}}}=1999 ('max' starting season shown; optional; 1999 will show 1999-00)
-- {{{8}}}=0 (testcasegap parameter for easier testing; optional)
--sterilize start
if string.match(start or '', '^%d%d?%d?%d?$') == nil then --1-4 digits, AD only
local start_fixed = mw.ustring.match(start or '', '^%s*(%d%d?%d?%d?)%D')
if start_fixed then
start = start_fixed
else
errors = errorclass('Function navhyphen can\'t recognize the number "'..(start or '')..'" '..
'in the first part of the "season" that was passed to it. '..
'For e.g. "2015–16", "2015" is expected via "|2015|–|16|".')
return failedcat(errors, 'H')
end
end
local nstart = tonumber(start)
--en dash check
local endashcat = ''
if hyph ~= '–' then
endashcat = '[[Category:Navseasoncats range not using en dash]]' --nav still processable, but track
end
--sterilize ish (e.g. "01" part of "2001"; "2" part of "12")
if string.match(ish or '', '^%d?%d$') == nil then --expecting 1 or 2 digits
if string.match(ish or '', '^%d%d%d') then
errors = errorclass('The second part of the season passed to function navhyphen should only be one or two digits, not "'..(ish or '')..'". '..
'E.g. "1999-2000" should be cut down to "1999-00".')
return failedcat(errors, 'I')..endashcat
end
local ish_fixed = mw.ustring.match(ish or '', '^%s*(%d?%d)%D')
if ish_fixed then
ish = ish_fixed
else
errors = errorclass('Function navhyphen can\'t recognize the number "'..(ish or '')..'" '..
'in the second part of the "season" that was passed to it. '..
'For e.g. "2015–16", "16" is expected via "|2015|–|16|".')
return failedcat(errors, 'J')..endashcat
end
end
local nish = tonumber(ish)
--sterilize min/max
local nminseas = tonumber(minseas) or -9999 --not yet implemented; pending discussion
local nmaxseas = tonumber(maxseas) or 9999 --not yet implemented; pending discussion
--error check start & ish together
if string.len(start) >= 2 and string.len(ish) ~= 2 then
errors = errorclass('The second part of the season passed to function navhyphen should be two digits, not "'..ish..'".')
return failedcat(errors, 'K')..endashcat
end
--calculate intRAseason size/term length & finishing year
local t = 1
while t <= 10 do --1~4 iterations should be enough
local nfinish = nstart + t --use switchADBC to flip this sign to work for years BC
if string.match(nfinish, '%d?%d$') == ish then
break
end
if t == 10 then
errors = errorclass('Function navhyphen can\'t determine a reasonable term length for "'..start..hyph..ish..'".')
return failedcat(errors, 'L')..endashcat
end
t = t + 1
end
--calculate intERseason gap size
local hgapdefault = 0 --assume & start at the most common case: 2001–02, 2002–03, etc.
local hgap = hgapdefault
local hgap_success = false
while hgap <= 5 do --verify
local prevseason = firstpart..' '..(nstart-t-hgap)..hyph..string.match(nstart-hgap, '%d?%d$')..' '..lastpart
local nextseason = firstpart..' '..(nstart+t+hgap)..hyph..string.match(nstart+2*t+hgap, '%d?%d$')..' '..lastpart
if mw.title.new(prevseason, 'Category').exists or --use 'or', in case we're at the edge of the cat structure,
mw.title.new(nextseason, 'Category').exists then --or we hit a "–00"/"–2000" situation on one side
hgap_success = true
break
end
hgap = hgap + 1
end
if hgap_success == false then
hgap = tonumber(testgap) or hgapdefault --tracked via defaultgapcat()
end
--begin navhyphen
local navh = '{| class="toccolours hlist" style="text-align: center; margin: auto;"\n'..'|\n'
local i = -3
while i <= 3 do
local from = nstart + i*(t+hgap)
local to = tostring(from+t)
local todisp = string.match(to, '%d?%d$')
local tolink = todisp
if tolink == '00' then
tolink = to
end
--populate navh
local shown = '*'..catlink( firstpart..' '..from..hyph..tolink..' '..lastpart,
from..hyph..todisp )..'\n'
local hidden = '*<span style="visibility:hidden">'..from..hyph..todisp..'</span>\n'
if i ~= 0 then --left/right navh
if from >= 0 then
navh = navh..shown
else
navh = navh..hidden
end
else --center navh
navh = navh..'*<b>'..start..hyph..ish..'</b>\n'
end
i = i + 1
end
return navh..'|}'..isolatedcat()..defaultgapcat(not hgap_success)..endashcat
end
--[[============================{{ navordinal }}============================]]
function navordinal( firstpart, ord, lastpart, minimumord, maximumord )
local nord = tonumber(ord)
local minord = tonumber(string.match(minimumord or '', '(-?%d+)[snrt]?[tdh]?')) or -9999 --allow full ord & +/- qualifier
local maxord = tonumber(string.match(maximumord or '', '(-?%d+)[snrt]?[tdh]?')) or 9999 --allow full ord & +/- qualifier
if string.match(minimumord or '', 'BC') then minord = -math.abs(minord) end --allow BC qualifier (AD otherwise assumed)
if string.match(maximumord or '', 'BC') then maxord = -math.abs(maxord) end --allow BC qualifier (AD otherwise assumed)
local temporal = string.match(lastpart, 'century') or
string.match(lastpart, 'millennium')
local tspace = ' ' --assume a trailing space after ordinal
if string.match(lastpart, '^-') then tspace = '' end --DNE for "19th-century"-type cats
--AD/BC switches & vars
local ordBCElastparts = { --needed for parent = AD 1-5, when the BC/E format is unknown
--lists the lastpart of valid BCE cats
--"BCE" removed to match both AD & BCE cats; easier & faster than multiple string.match()s
['-century Hebrew people'] = 'BCE', --WP:CFD/Log/2016 June 21#Category:11th-century BC Hebrew people
['-century Jews'] = 'BCE', --co-nominated
['-century Judaism'] = 'BCE', --co-nominated
['-century rabbis'] = 'BCE', --co-nominated
}
local parentBC = mw.ustring.match(lastpart, '%s(BCE?)') --"1st-century BC" format
local lastpartNoBC = mw.ustring.gsub(lastpart, '%sBCE?', '') --easier than splitting lastpart up in 2; AD never used
local BCe = parentBC or ordBCElastparts[lastpartNoBC] or 'BC' --"BC" default
local switchADBC = 1 -- 1=AD parent
if parentBC then switchADBC = -1 end -- -1=BC parent; possibly adjusted later
local O = 0 --secondary iterator for AD-on-a-BC-parent
if not temporal and minord < 1 then minord = 1 end --nothing before "1st parliament", etc.
if minord > nord*switchADBC then minord = nord*switchADBC end --input error; minord should be <= parent
if maxord < nord*switchADBC then maxord = nord*switchADBC end --input error; maxord should be >= parent
--determine right-offset, to not show unnecessary future millenia
local roffset = 0
if temporal and nord <= 3 then
if string.match(lastpartNoBC, 'millennium ') and --only offset "1st millennium BC in Egypt" to "3rd-millennium people"-type cats
string.match(lastpartNoBC, 'millennium in fiction') == nil and --except these, which extend > 4th millennium
maxord == 9999 --only apply if max unspecified
then
if not parentBC and nord <= 3 then --1st, 2nd, & 3rd millennium parents
roffset = nord + 1
elseif parentBC and nord == 1 then --1st millennium BC only
roffset = 1
end
end
end
--begin navordinal
local navo = '{| class="toccolours hlist" style="text-align: center; margin: auto;"\n'..'|\n'
local i = (-5 - roffset)
while i <= (5 - roffset) do
local o = nord + i*switchADBC
local BC = ''
local BCdisp = ''
if i ~= 0 then --left/right navo
if parentBC then
if switchADBC == -1 then --parentBC looking at the BC side
if o >= 1 then --the common case
BC = ' '..BCe
elseif o == 0 then --switch to the AD side
BC = ''
switchADBC = 1
end
end
if switchADBC == 1 then --displayed o is now in the AD regime
O = O + 1 --skip o = 0 (DNE)
o = O --easiest solution: start another iterator for these AD o's displayed on a BC year parent
end
elseif o <= 0 then --parentAD looking at BC side
BC = ' '..BCe
o = math.abs(o - 1) --skip o = 0 (DNE)
end
if BC ~= '' and nord <= 5 then --only show 'BC' for parent ords <= 5: saves room, easier to read,
BCdisp = ' '..BCe --and 6 is the first/last nav ord that doesn't need a disambiguator;
end --the center/parent ord will always show BC, so no need to show it another 10x
--populate left/right navo
local oth = addord(o)
local osign = o --use o for display & osign for logic
if BC ~= '' then osign = -osign end
local hidden = '*<span style="visibility:hidden">'..oth..'</span>\n'
if temporal then --e.g. "3rd-century BC"
if (minord <= osign) and (osign <= maxord) then
local lastpart = lastpartNoBC --lest we recursively add multiple "BC"s
if BC ~= '' then
lastpart = string.gsub(lastpart, temporal, temporal..BC) --replace BC if needed
end
navo = navo..'*'..catlink( firstpart..' '..oth..tspace..lastpart, oth..BCdisp )..'\n'
else
navo = navo..hidden
end
elseif BC == '' and minord <= osign and osign <= maxord then --e.g. >= "1st parliament"
navo = navo..'*'..catlink( firstpart..' '..oth..tspace..lastpart, oth )..'\n'
else --either out-of-range (hide), or non-temporal + BC = something might be wrong (2nd X parliament BC?); handle exceptions if/as they arise
navo = navo..hidden
end
else --center navo
if parentBC then BC = ' '..BCe end
navo = navo..'*<b>'..addord(o)..BC..'</b>\n'
end
i = i + 1
end
return navo..'|}'..isolatedcat()
end
--[[============================{{ var_season }}============================]]
function var_season( pn )
--Extracts e.g. 2015–16, 3rd, 2000s, or 1999 out of a string
local pagename = currtitle.baseText
if pn and pn ~= '' then
pagename = pn
end
local cpagename = 'Category:'..pagename --limited-Lua-regex workaround
local season = mw.ustring.match(cpagename, '[:%s](%d+[–-]%d+)%s') or --split in 2 b/c %f[%s$] doesn't work
mw.ustring.match(cpagename, '[:%s](%d+[–-]%d+)$')
local ordinal = mw.ustring.match(cpagename, '[:%s](%d+[snrt][tdh])[-%s]') or
mw.ustring.match(cpagename, '[:%s](%d+[snrt][tdh])$')
local decade = mw.ustring.match(cpagename, '[:%s](%d+s)[%s-]') or
mw.ustring.match(cpagename, '[:%s](%d+s)$')
local year = mw.ustring.match(cpagename, '[:%s](%d+)%s') or
mw.ustring.match(cpagename, '[:%s](%d+)$')
local all4 = (season or '')..','..(ordinal or '')..','..(decade or '')..','..(year or '')
if (season == nil and ordinal == nil and decade == nil and year == nil) or
string.match(all4, '%d%d%d%d%d')
then
errors = errorclass('Function var_season can\'t recognize a season, ordinal, decade, nor year for category "'..pagename..'".')
return failedcat(errors, 'S')
end
--return in order of decreasing complexity
if season then return season end
if ordinal then return ordinal end
if decade then return decade end
if year then return year end
end
--[[==========================================================================]]
--[[ Main ]]
--[[==========================================================================]]
function p.navseasoncats( frame )
local args = frame:getParent().args
local cat = args['cat']
local testcase = args['testcase']
local testcasegap = args['testcasegap']
local minyear = args['min']
local maxyear = args['max']
if cat then
navborder = false
cat = string.gsub(cat, ' ', ' ') --unicodify for {{Navseasoncats with decades below year}}
end
local testcasecat = ''
if testcase and currtitle.nsText == 'Category' then
testcasecat = '[[Category:Navseasoncats using testcase parameter]]'
end
local pagename = testcase or cat or currtitle.baseText
local varseason = var_season(pagename)
if errors ~= '' then return varseason end --some error checking in var_season()
local firstpart, lastpart = string.match(pagename, '^(.*)'..varseason..'(.*)$')
firstpart = mw.text.trim(firstpart or '')
lastpart = mw.text.trim(lastpart or '')
local start = string.match(varseason, '^%d+')
local hyphen, finish = mw.ustring.match(varseason, '%d([–-])(%d+)') --ascii 150 & 45 (ndash & keyboard hyphen); mw req'd
--more checks & routing to the appropriate nav function
if hyphen and finish then --e.g. "2015–16"
local ish = string.match(finish, '%d?%d$') --in case "1999–2000", "1–4"
return navhyphen( start, hyphen, ish, firstpart, lastpart, minyear, maxyear, testcasegap )..testcasecat
elseif string.match(varseason, '%d[snrt][tdh]$') then --e.g. "4th"
return navordinal( firstpart, start, lastpart, minyear, maxyear )..testcasecat
elseif string.match(varseason, '%ds$') then --e.g. "0s", "2010s"
return navdecade( firstpart, start, lastpart, minyear, maxyear )..testcasecat
elseif string.match(varseason, '^%d+$') then --e.g. "500" or "2001"
return navyear( firstpart, start, lastpart, minyear, maxyear )..testcasecat
else --malformed
errors = errorclass('Malformed season "'..varseason..'". ')
return failedcat(errors, 'N')..testcasecat
end
end
return p