Module:Footnotes
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require('Module:No globals');
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 = ", s. ",
pages_sep = ", ss. ",
ref = '',
template = 'harv', -- if template name not provided in {{#invoke:}} 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 '<span class="error harv-error" style="display: inline; font-size:100%"> ' .. args.template .. ' error: ' .. msg .. ' ([[:Category:Harv and Sfn template errors|help]])</span>' .. 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 '<span class="error harv-error" style="display: inline; font-size:100%"> ' .. args.template .. ' error: ' .. msg .. ' ([[:Category:Harv and Sfn template errors|help]])</span>' .. category or '';
--use this version to hide error messages
return msg and '<span class="error harv-error" style="display: none; font-size:100%"> ' .. args.template .. ' error: ' .. msg .. ' ([[:Category:Harv and Sfn template errors|help]])</span>' .. 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 ({'[[#', anchor_id, '|', 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 ({'[[#', anchor_id, '|', 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:Manba/MU1/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:Manba/MU1/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:
{{harvard citation}} aka {{harv}}
{{Harvard citation no brackets}} aka {{harvnb}}
{{harvcol}}
{{harvcolnb}}
{{harvcoltxt}}
{{Harvard citation text}} aka {{harvtxt}}
{{Harvp}}
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 {{sfn}} and {{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 {{sfnm}} and {{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 {{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,
};