Module:Footnotes

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require('strict'); local getArgs = require ('Module:Arguments').getArgs;


--[[--------------------------< A R G S _ D E F A U L T >------------------------------------------------------

a table to specify initial values.

]]

local args_default = { bracket_left = , bracket_right = , bracket_year_left = , bracket_year_right = , postscript = , page = , pages = , location = , page_sep = ", p. ", pages_sep = ", pp. ", ref = , template = 'harv', -- if template name not provided in Script error: You must specify a function to call. use this };


--[[--------------------------< T A R G E T _ C H E C K >------------------------------------------------------

look for anchor_id (CITEREF name-list and year or text from |ref=) in anchor_id_list

the 'no target' error may be suppressed with |ignore-err=yes when target cannot be found because target is inside a template that wraps another template; 'multiple targets' error may not be suppressed

]]

local function target_check (anchor_id, args) local namespace = mw.title.getCurrentTitle().namespace; local anchor_id_list_module = mw.loadData ('Module:Footnotes/anchor_id_list'); local anchor_id_list = anchor_id_list_module.anchor_id_list; local article_whitelist = anchor_id_list_module.article_whitelist; local template_list = anchor_id_list_module.template_list;

local whitelist_module = mw.loadData ('Module:Footnotes/whitelist'); local whitelist = whitelist_module.whitelist; local special_patterns = whitelist_module.special_patterns; local DNB_special_patterns = whitelist_module.DNB_special_patterns; local DNB_template_names = whitelist_module.DNB_template_names;

if 10 == namespace then return ; -- automatic form of |no-tracking=yes; TODO: is this too broad? end

local tally = anchor_id_list[anchor_id]; -- nil when anchor_id not in list; else a tally local msg; local category;

if not tally then if args.ignore then return ; -- if ignore is true then no message, no category end

if article_whitelist and article_whitelist[anchor_id] then -- if an article-local whitelist and anchor ID is in it return ; -- done end

local wl_anchor_id = anchor_id; -- copy to be modified to index into the whitelist

if args.year then -- for anchor IDs created by this template (not in |ref=) that have a date if args.year:match ('%d%l$') or -- use the date value to determine if we should remove the disambiguator args.year:match ('n%.d%.%l$') or args.year:match ('nd%l$') then wl_anchor_id = wl_anchor_id:gsub ('%l$', ); -- remove the disambiguator end end

local t_tbl = whitelist[wl_anchor_id]; -- get list of templates associated with this anchor ID

if t_tbl then -- when anchor ID not whitelisted t_tbl is nil for _, t in ipairs (t_tbl) do -- spin through the list of templates associated with this anchor ID if template_list[t] then -- if associated template is found in the list of templates in the article return ; -- anchor ID is whitlisted and article has matching template so no error end end end

for _, pattern in ipairs (special_patterns) do -- spin through the spcial patterns and try to match if anchor_id:match (pattern) then return ; end end

for _, dnb_t in ipairs (DNB_template_names or {}) do -- getting desparate now, are there any DNB templates? DNB_template_names may be nil; empty table prevents script error if template_list[dnb_t] then -- if the article has this DNB template for _, pattern in ipairs (DNB_special_patterns) do -- spin through the DNB-specifiec wildcard patterns if anchor_id:match (pattern) then -- and attempt a match return ; -- found a match end end end end

msg = 'no target: ' .. anchor_id; -- anchor_id not found category = ;

elseif 1 < tally then msg = 'multiple targets (' .. tally .. '×): ' .. anchor_id; -- more than one anchor_id in this article category = 0 == namespace and or ; -- only categorize in article space return ' ' .. args.template .. ' error: ' .. msg .. ' (help)' .. category; end

-- category = 0 == namespace and or ; -- only categorize in article space category = 0 == namespace and category or ; -- only categorize in article space

--use this version to show error messages -- return msg and ' ' .. args.template .. ' error: ' .. msg .. ' (help)' .. category or ; --use this version to hide error messages return msg and '' .. category or ;

end


--[[--------------------------< I S _ Y E A R >----------------------------------------------------------------

evaluates param to see if it is one of these forms with or without lowercase letter disambiguator: YYYY n.d. nd c. YYYY YYYY–YYYY (separator is endash) YYYY–YY (separator is endash)

return true when param has a recognized form; false else

]]

local patterns_date= { '^%d%d%d%d?%l?$', '^n%.d%.%l?$', '^nd%l?$', '^c%. %d%d%d%d?%l?$', '^%d%d%d%d–%d%d%d%d%l?$', '^%d%d%d%d–%d%d%l?$', }

local function is_year (param, args) args.year = ; -- used for harv error;

for _, pattern in ipairs (patterns_date) do if mw.ustring.match (param, pattern) then args.year = param; -- used for harv error; return true; end end end


--[[--------------------------< C O R E >----------------------------------------------------------------------

returns an anchor link (CITEREF) formed from one to four author names, year, and insource location (|p=, |pp=, loc=)

]]

local function core( args ) local result; local err_msg =

if args.P5 ~= then if is_year (args.P5, args) then result = table.concat ({args.P1, ' et al. ', args.bracket_year_left, args.P5, args.bracket_year_right}); else args.P5 = ; -- when P5 not a year don't include in anchor result = table.concat ({args.P1, ' et al.'}); -- and don't render it end

elseif args.P4 ~= then if is_year (args.P4, args) then result = table.concat ({args.P1, ', ', args.P2, ' & ', args.P3, ' ', args.bracket_year_left, args.P4, args.bracket_year_right}); -- three names and a year else result = table.concat ({args.P1, ' et al.'}); -- four names end

elseif args.P3 ~= then if is_year (args.P3, args) then result = table.concat ({args.P1, ' & ', args.P2, ' ', args.bracket_year_left, args.P3, args.bracket_year_right}); -- two names and a year else result = table.concat ({args.P1, ', ', args.P2, ' ', ' & ', args.P3}); -- three names end

elseif args.P2 ~= then if is_year (args.P2, args) then result = table.concat ({args.P1, ' ', args.bracket_year_left, args.P2, args.bracket_year_right}); -- one name and year else result = table.concat ({args.P1, ' & ', args.P2}); -- two names end

else result = args.P1; -- one name end -- when author-date result ends with a dot (typically when the last positional parameter holds 'n.d.') -- and when no in-source location (no |p=, |pp=, or |loc=) -- and when the first or only character in args.postscript is a dot -- remove the author-date result trailing dot -- the author-date result trailing dot will be replaced later with the content of args.postscript (usually a dot) if ('.' == result:sub(-1)) and ('.' == args.postscript:sub(1)) and ( == args.page) and ( == args.pages) and ( == args.location) then result = result:gsub ('%.$', ); end

if args.ref ~= 'none' then local anchor_id; if args.ref ~= then anchor_id = mw.uri.anchorEncode (args.ref); err_msg = target_check (anchor_id, args); result = table.concat ({'', result, ''}); else anchor_id = mw.uri.anchorEncode (table.concat ({'CITEREF', args.P1, args.P2, args.P3, args.P4, args.P5})); err_msg = target_check (anchor_id, args); result = table.concat ({'', result, ''}); end end

if args.page ~= then result = table.concat ({result, args.page_sep, args.page}); elseif args.pages ~= then result = table.concat ({result, args.pages_sep, args.pages}); end

if args.location ~= then result = table.concat ({result, ', ', args.location}); end

result = table.concat ({args.bracket_left, result, args.bracket_right, args.postscript}):gsub ('%s+', ' '); -- strip redundant spaces return result .. err_msg; end


--[[--------------------------< H Y P H E N _ T O _ D A S H >--------------------------------------------------

Converts a hyphen to a dash under certain conditions. The hyphen must separate like items; unlike items are returned unmodified. These forms are modified: letter - letter (A - B) digit - digit (4-5) digit separator digit - digit separator digit (4.1-4.5 or 4-1-4-5) letterdigit - letterdigit (A1-A5) (an optional separator between letter and digit is supported – a.1-a.5 or a-1-a-5) digitletter - digitletter (5a - 5d) (an optional separator between letter and digit is supported – 5.a-5.d or 5-a-5-d)

any other forms are returned unmodified.

str may be a comma- or semicolon-separated list

This code copied from Module:Citation/CS1. The only modification is to require Module:Citation/CS1/Utilities so that it has access to the functions is_set() and has_accept_as_written()

]]

local function hyphen_to_dash( str ) local utilities = require ('Module:Citation/CS1/Utilities'); -- only modification so that this function has access to is_set() and has_accept_as_written()

if not utilities.is_set (str) then return str; end

local accept; -- Boolean

str = str:gsub ('&[nm]dash;', {['–'] = '–', ['—'] = '—'}); -- replace — and – entities with their characters; semicolon mucks up the text.split str = str:gsub ('-', '-'); -- replace HTML numeric entity with hyphen character

str = str:gsub (' ', ' '); -- replace   entity with generic keyboard space character

local out = {}; local list = mw.text.split (str, '%s*[,;]%s*'); -- split str at comma or semicolon separators if there are any

for _, item in ipairs (list) do -- for each item in the list item, accept = utilities.has_accept_as_written (item); -- remove accept-this-as-written markup when it wraps all of item if not accept and mw.ustring.match (item, '^%w*[%.%-]?%w+%s*[%-–—]%s*%w*[%.%-]?%w+$') then -- if a hyphenated range or has endash or emdash separators if item:match ('^%a+[%.%-]?%d+%s*%-%s*%a+[%.%-]?%d+$') or -- letterdigit hyphen letterdigit (optional separator between letter and digit) item:match ('^%d+[%.%-]?%a+%s*%-%s*%d+[%.%-]?%a+$') or -- digitletter hyphen digitletter (optional separator between digit and letter) item:match ('^%d+[%.%-]%d+%s*%-%s*%d+[%.%-]%d+$') or -- digit separator digit hyphen digit separator digit item:match ('^%d+%s*%-%s*%d+$') or -- digit hyphen digit item:match ('^%a+%s*%-%s*%a+$') then -- letter hyphen letter item = item:gsub ('(%w*[%.%-]?%w+)%s*%-%s*(%w*[%.%-]?%w+)', '%1–%2'); -- replace hyphen, remove extraneous space characters else item = mw.ustring.gsub (item, '%s*[–—]%s*', '–'); -- for endash or emdash separated ranges, replace em with en, remove extraneous whitespace end end table.insert (out, item); -- add the (possibly modified) item to the output table end

local temp_str = ; -- concatenate the output table into a comma separated string temp_str, accept = utilities.has_accept_as_written (table.concat (out, ', ')); -- remove accept-this-as-written markup when it wraps all of concatenated out if accept then temp_str = utilities.has_accept_as_written (str); -- when global markup removed, return original str; do it this way to suppress boolean second return value return temp_str; else return temp_str; -- else, return assembled temp_str end end


--[[--------------------------< A R G S _ F E T C H >---------------------------------------------------------

Because all of the templates share a common set of parameters, a single common function to fetch those parameters from frame and parent frame.

]]

local function args_fetch (frame, ps) local args = args_default; -- create a copy of the default table local pframe = frame:getParent(); -- point to the template's parameter table

for k, v in pairs (frame.args) do -- override defaults with values provided in the #invoke: if any args[k] = v; end

args.postscript = pframe.args.postscript or pframe.args.ps or ps; if 'none' == args.postscript then args.postscript = ; end args.page = pframe.args.p or pframe.args.page or ; args.pages = pframe.args.pp or pframe.args.pages or ; args.pages = ( ~= args.pages) and hyphen_to_dash (args.pages) or ; args.location = pframe.args.loc or ; args.ref = pframe.args.ref or pframe.args.Ref or ; args.ignore = ('yes' == pframe.args['ignore-false-positive']) or ('yes' == pframe.args['ignore-err']);

for i, v in ipairs ({'P1', 'P2', 'P3', 'P4', 'P5'}) do -- loop through the five positional parameters and trim if set else empty string args[v] = (pframe.args[i] and mw.text.trim (pframe.args[i])) or ; end

if args.P5 and not is_year (args.P5, args) then local i = 6; -- initialize the indexer to the sixth positional parameter while pframe.args[i] do -- in case there are too many authors loop through the authors looking for a year local v = mw.text.trim (pframe.args[i]); -- trim if is_year (v, args) then -- if a year args.P5 = v; -- overwrite whatever was in args.P5 with year break; -- and abandon the search end i = i + 1; -- bump the indexer end end return args; end


--[[--------------------------< H A R V A R D _ C I T A T I O N >----------------------------------------------

common entry point for: 板㑄:Harvard citation aka 板㑄:Harv 板㑄:Harvard citation no brackets aka [[#CITEREF|]] 板㑄:Harvcol 板㑄:Harvcolnb 板㑄:Harvcoltxt 板㑄:Harvard citation text aka 板㑄:Harvtxt Lua error in package.lua at line 80: module 'Module:Footnotes/anchor_id_list' not found.

Distinguishing features (brackets and page separators) are specified in this module's {{#invoke}} in the respective templates.

]]

local function harvard_citation (frame) local args = args_fetch (frame, ); -- get the template and invoke parameters; default postscript is empty string

return core (args); end


--[[--------------------------< S T R I P _ U R L >------------------------------------------------------------

used by sfn() and sfnm(). This function fixes an issue with reference tooltip gadget where the tooltip is not displayed when an insource locator (|p=, |pp=, |loc=) has an external wikilink that contains a # character

strip uri-reserved characters from urls in |p=, |pp-, and |loc= parameters The researved characters are: !#$&'()*+,/:;=?@[]

]]

local function strip_url (pages) local escaped_uri; if not pages or ( == pages) then return pages; end

for uri in pages:gmatch ('%[(%a[%w%+%.%-]*://%S+)') do -- for each external link get the uri escaped_uri = uri:gsub ("([%(%)%.%%%+%-%*%?%[%^%$%]])", "%%%1" ); -- save a copy with lua pattern characters escaped uri = uri:gsub ("[!#%$&'%(%)%*%+,/:;=%?@%[%]%.%%]", ); -- remove reserved characters and '%' because '%20' (space character) is a lua 'invalid capture index' pages = pages:gsub (escaped_uri, uri, 1); -- replace original uri with the stripped version end

return pages; end


--[[--------------------------< S F N >------------------------------------------------------------------------

entry point for 板㑄:Sfn and 板㑄:Sfnp

]]

local function sfn (frame) local args = args_fetch (frame, '.'); -- get the template and invoke parameters; default postscript is a dot

local result = core (args); -- go make a CITEREF anchor -- put it all together and then strip redundant spaces local name = table.concat ({'FOOTNOTE', args.P1, args.P2, args.P3, args.P4, args.P5, strip_url (args.page), strip_url (args.pages), strip_url (args.location)}):gsub ('%s+', ' ');

return frame:extensionTag ({name='ref', args={name=name}, content=result});


end


--[[--------------------------< S F N M >----------------------------------------------------------------------

common entry point for 板㑄:Sfnm and 板㑄:Sfnmp

Distinguishing features (brackets) are specified in this module's {{#invoke}} in the respective templates.

]]

local function sfnm (frame) local args = args_default; -- create a copy of the default table local pframe = frame:getParent(); -- point to the template's parameter table

local n = 1; -- index of source; this is the 'n' in na1, ny, etc local first_pnum = 1; -- first of a pair of positional parameters local second_pnum = 2; -- second of a pair of positional parameters

local last_ps = 0; -- index of the last source with |nps= set local last_index = 0; -- index of the last source; these used to determine which of |ps= or |nps= will terminate the whole rendering

local out = {}; -- table to hold rendered sources local footnote = {'FOOTNOTE'}; -- all author, date, insource location stuff becomes part of the reference's footnote id; added as we go

for k, v in pairs (frame.args) do -- override defaults with values provided in the #invoke: if any args[k] = v; end

while true do if not pframe.args[table.concat ({n, 'a1'})] and not pframe.args[first_pnum] then break; -- no na1 or matching positional parameter so done end

if pframe.args[table.concat ({n, 'a1'})] then -- does this source use named parameters? for _, v in ipairs ({'P1', 'P2', 'P3', 'P4', 'P5'}) do -- initialize for this source args[v] = ; end

for i, v in ipairs ({'P1', 'P2', 'P3', 'P4', 'P5'}) do -- extract author and year parameters for this source args[v] = pframe.args[table.concat ({n, 'a', i})] or ; -- attempt to assign author name if == args[v] then -- when there wasn't an author name args[v] = pframe.args[table.concat ({n, 'y'})] or ; -- attempt to assign year break; -- done with author/date for this source end end

else -- this source uses positional parameters args.P1 = mw.text.trim (pframe.args[first_pnum]); -- yes, only one author supported args.P2 = (pframe.args[second_pnum] and mw.text.trim (pframe.args[second_pnum])) or ; -- when positional author, year must also be positional

for _, v in ipairs ({'P3', 'P4', 'P5'}) do -- blank the rest of these for this source args[v] = ; end

first_pnum = first_pnum + 2; -- source must use positional author and positional year second_pnum = first_pnum + 1; -- bump these for possible next positional source end

args.postscript = pframe.args[table.concat ({n, 'ps'})] or ; if 'none' == args.postscript then -- this for compatibility with other footnote templates; does nothing args.postscript = ; end

args.ref = pframe.args[table.concat ({n, 'ref'})] or ; -- alternate reference for this source

args.page = pframe.args[table.concat ({n, 'p'})] or ; -- insource locations for this source args.pages = pframe.args[table.concat ({n, 'pp'})] or ; args.pages = ( ~= args.pages) and hyphen_to_dash (args.pages) or ; args.location = pframe.args[table.concat ({n, 'loc'})] or ; args.ignore = ('yes' == pframe.args[table.concat ({n, 'ignore-false-positive'})]) or ('yes' == pframe.args[table.concat ({n, 'ignore-err'})]);

table.insert (out, core (args)); -- save the rendering of this source

for k, v in ipairs ({'P1', 'P2', 'P3', 'P4', 'P5'}) do -- create the FOOTNOTE id if ~= args[v] then table.insert (footnote, args[v]); end end for k, v in ipairs ({'page', 'pages', 'location'}) do -- these done separately so that we can strip uri-reserved characters from extlinked page numbers if ~= args[v] then table.insert (footnote, strip_url (args[v])) end end

last_index = n; -- flags used to select terminal postscript from nps or from end_ps if ~= args.postscript then last_ps = n; end

n = n+1; -- bump for the next one end

local name = table.concat (footnote):gsub ('%s+', ' '); -- put the footnote together and strip redundant space

args.end_ps = pframe.args.postscript or pframe.args.ps or '.'; -- this is the postscript for the whole not for the individual sources if 'none' == args.end_ps then -- not an original sfnm parameter value; added for compatibility with other footnote templates args.end_ps = ; end

local result = table.concat ({table.concat (out, '; '), (last_index == last_ps) and or args.end_ps}); return frame:extensionTag ({name='ref', args={name=name}, content=result}); end


--[[--------------------------< S F N R E F >------------------------------------------------------------------

implements 板㑄:Sfnref

]]

local function sfnref (frame) local args = getArgs (frame); local out = {};

for i=1, 5 do -- get the first five args if there are five args if args[i] then out[i] = args[i]; else break; -- less than 5 args break out end end

if 5 == #out then -- when we have seen five args there may bemore local i = 6; -- initialize the indexer to the sixth positional parameter while args[i] do -- in case there are too many authors loop through the authors looking for a year if is_year (args[i], args) then -- if a year out[5] = args[i]; -- overwrite whatever was in args[5] with year break; -- and abandon the search end i = i + 1; -- bump the indexer end end

return mw.uri.anchorEncode ('CITEREF' .. table.concat (out)); end


--[[--------------------------< E X P O R T E D F U N C T I O N S >------------------------------------------ ]]

return { harvard_citation = harvard_citation, sfn = sfn, sfnm = sfnm, sfnref = sfnref, };