Mô đun:Footnotes/anchor id list

require('strict');
local data = mw.loadData ('Module:Footnotes/anchor id list/data');
local whitelist = mw.loadData ('Module:Footnotes/whitelist');
local Lang_obj = mw.language.getContentLanguage(); -- used by template_list_add() to uppercase first letter of template name TODO: better way to do that?

local redirects_date = {
['date'] = true,
['datetomos'] = true,
['formatdate'] = true,
['isotodmymdy'] = true,
['isotomos'] = true,
}
local redirects_patent = { -- special case cs1-like templates because uses different parameters for name and date in anchor ID
['Cite patent'] = true,
['Citeref patent'] = true,
['Ref patent'] = true,
}
local redirects_sfnref = {
['sfnref'] = true,
['harvid'] = true,
}
local aliases_author = { -- these use pseudo-patterns in the same way as cs1|2; '' represents 1 or more enumerator digits
'last',
'author',
'surname',
'author-last',
'author-last',
'subject',
'host',
'họ',
'họ ',
'tác giả ',
'tác giả',
}
local aliases_contributor = {
'contributor',
'contributor-last',
'contributor-last',
'contributor-surname',
'contributor-surname',
}
local aliases_editor = {
'editor',
'editor-last',
'editor-last',
'editor-surname',
'editor-surname',
'họ biên tập ',
'họ biên tập',
'họ biên tập viên ',
'họ biên tập viên',
}
local aliases_harvc_author = {
'last',
'author',
}
local aliases_inventor = { -- cite patent
'inventor',
'inventor-last',
'inventor-last',
'inventor-surname',
'inventor-surname',
'invent',
'invent-',
}
local alias_patterns_date = { -- normal lua patterns for most cs1|2-like templates
'|%syear%s=%s',
'|%sdate%s=%s',
'|%spublication%-?date%s=%s',
'|%snăm%s=%s',
'|%sngày%s=%s',
}
local alias_patterns_harvc_date = { -- normal lua patterns for harvc template
'|%sanchor%-year%s=%s',
'|%syear%s=%s',
'|%snăm%s=%s',
'|%sngày%s=%s',
}
local alias_patterns_patent_date = { -- normal lua patterns for cite patent templates
'|%sissue%-date%s=%s',
'|%sgdate%s=%s',
'|%spublication%-date%s=%s',
'|%spubdate%s=%s',
}
local patterns_date = { -- normal lua patterns
'(%d%d%d%d–%d%d%d%d%l?)$', -- YYYY–YYYY four-digit year range at end (Season YYYY–YYYY); with or without dab
'^(%d%d%d%d–%d%d%l?)$', -- YYYY–YY two-digit year range; with or without dab
'^(c%. %d%d%d%d?%l?)$', -- three- or four-digit circa year; with or without dab
'(%d%d%d%d?%l?)$', -- three- or four-digit year at end of date (dmy or mdy); with or without dab
'^(%d%d%d%d?%l?)', -- three- or four-digit year at beginning of date (ymd or YYYY); with or without dab
'^(n%.d%.%l?)$', -- 'no date' with dots; with or without dab
'^(nd%l?)$', -- 'no date' without dots; with or without dab
}
local patterns_tags = {
'.-',
,
'.-',
'.-',
'.-', -- deprecated alias of syntaxhighlight tag
}
local template_skip = { -- templates to be skipped for whatever reason; mostly because they resemble cs1-like templates
['Citation-attribution'] = true,
}
local Article_content;

local anchor_id_list = {}; -- exported tables
local template_list = {};
local article_whitelist = {};

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

get article content, remove certain html-like tags and their content so that this code doesn't include any citation
templates inside the tags as valid tagets; they are not.

local function article_content_get ()
if not Article_content then
Article_content = mw.title.getCurrentTitle():getContent() or ; -- get the content of the article or ; new pages edited w/ve do not have 'content' until saved; ve does not preview; phab:T221625
for _, tag in ipairs (patterns_tags) do
Article_content = Article_content:gsub (tag, ); -- remove certain html-like tags and their content
end
end
end

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

make an anchor id from the contents of or . this function assumes that and
are correctly formed.

local function sfnref_get (template)
template = template:gsub (, '%1'); -- strip bounding template markup and trim
local parts = mw.text.split (template, '%s|%s'); -- split at the pipe and remove extraneous space characters
local anchor_id = {};

if redirects_sfnref[parts[1]:lower()] then
anchor_id[1] = 'CITEREF';
else
return nil; -- not an sfnref or harvid template
end

local i = 2; -- indexer into parts{} table
local j = 2; -- indexer into anchor_id{} table which already has 'CITEREF' at [1]
while parts[i] and 7 > j do -- loop through what should be just positional parameters for names and year (2-6 four names and a date)
if not parts[i]:find ('=') then -- look for equal sign (named paraneter in a template that doesn't support named parameters)
anchor_id[j] = parts[i]; -- positional parameters are saved
j = j+1; -- bump the anchor_id{} indexer
end
i = i+ 1; -- bump the parts{} indexer
end

return table.concat (anchor_id, );
end

--year=, |date=, |publicationdate=, or |publication-date in that order. Does not error
check (that is left to the cs1|2 templates to do)

also gets date from |=

local function date_get (template, aliases)
local date;
local rvalue;

for _, pattern in ipairs (aliases) do -- spin through the date alias patterns
rvalue = tostring(template):match (pattern); -- is this |= used (tostring() because something makes match() think template is a table)
if rvalue then
rvalue = tostring(template):match (pattern .. '(%b{})'); -- is rvalue a template?
if rvalue then
rvalue = rvalue:gsub (, '%1'); -- strip bounding template markup and trim
local parts = mw.text.split (rvalue, '%s|%s'); -- split at the pipe and remove extraneous space characters

if redirects_date[parts[1]:lower()] then -- if parts[1] names or redirect
rvalue = parts[2]; -- assume that date template is properly formed, first positional parameter is the date
else
return ; -- |date= holds some other template than or redirect
end
else
rvalue = template:match (pattern .. '([^|}]+)');
if rvalue then -- if rvalue is something
rvalue = mw.text.trim (rvalue); -- trim it
end

if not rvalue or == rvalue then -- if rvale was nothing or trimed to nothing
rvalue = nil; -- ensure that it is unset so we can try the next parameter in the list
end
end

if rvalue then
for _, pattern in ipairs (patterns_date) do -- spin through the recognized date formats
date = rvalue:match (pattern); -- attempt to extract year portion according to the pattern
if date then
return date; -- matched so return;
end
end
break; -- found a date but it was malformed so abandon
end
end
end

return ; -- no date param or date param doesn't hold a recognized date; empty string for concatenation
end


--vauthors= or |veditors=; there is no |vcontributors= parameter.

splits the v parameter value at the comma; correctly handles accept-as-witten markup when used to wrap a comma-
separated names (corporate)

local function vnames_get (params, vparam)
local vnames = {}; -- first four author or editor names go here
local split = {}; -- temp table to assist in decoding accept-as-witten-markup

if params[vparam] then -- test for |vauthors= or |veditor=
split = mw.text.split (params[vparam], '%s,%s'); -- this will separate portions of ((Black, Brown, White, an Co.))

local i = 1; -- an indexer

while split[i] do
if split[i]:match ('^%(%(.[^%)][^%)]$') then -- first segment of comma-separated accept-as-witten; this segment has the opening doubled parens
local name = split[i];
i=i+1; -- bump indexer to next segment
while split[i] do
name = name .. ', ' .. split[i]; -- concatenate with previous segments
if split[i]:match ('^.%)%)$') then -- if this table member has the closing doubled parens
break; -- and done reassembling so
end
i=i+1; -- bump indexer
end
table.insert (vnames, name); -- and add accept-as-witten name to the vnames table

else
table.insert (vnames, split[i]); -- and add name to the vnames table
end
i=i+1; -- bump indexer
if 5 == i then break; end -- limit to four names
end

for i, vname in ipairs (vnames) do
if not vname:match ('%(%(.-%)%)') then -- without accept-this-value-as-written markup
vnames[i] = vname:gsub ('(.-)%s+%u+$', '%1'); -- extract and save surname(s)
end
end
for i, vname in ipairs (vnames) do -- repeat, this time for accept-this-value-as-written markup
vnames[i] = vname:gsub ('%(%((.-)%)%)', '%1'); -- remove markup if present and save the whole name
end
end

return 0 ~= vnames and table.concat (vnames) or nil -- return a concatenation of the vnames; nil else
end

--2 makes anchor id from contributor, author, or editor name-lists in that order

get the names from the cs1|2 template; if there are no contributor names, try author names, then try editor names.

returns concatenated names in enumeration order when successful; nil else

empty name (nameholding parameter n is present without value) and missing name (nameholding parameter n is not
present) are included as empty string with all other names

local function names_get (params, aliases_list)
local names = {}; -- first four author or editor names go here
local enum_alias; -- alias with '' replaced with a digit

for enum=1, 4 do -- four names only
for i, alias in ipairs (aliases_list) do
if not names[enum] then -- hanven't found a previous alias with this [enum]? see if we can find this alias with this enum
enum_alias = alias:gsub ('', enum); -- replace '' to make 'lastn'

if 1 == enum then -- because |last= and last1= are exact aliases
if params[enum_alias] then -- test |last1= first
names[enum] = params[enum_alias]; -- found so save the value assigned to |last1=
break; -- next enum
else
enum_alias = alias:gsub ('', ); -- replace '' to make 'last'
if params[enum_alias] then
names[enum] = params[enum_alias]; -- found so save the value assigned to |last=
break; -- next enum
end
end
else -- here for enum 2, 3, 4
if params[enum_alias] then
names[enum] = params[enum_alias]; -- found so save the value assigned to |lastn=
break; -- next enum
end
end
end
end
end

for enum=1, 4 do -- spin through the names table and
local name = names[enum];
if not name then -- when nameholding parameter n is not present (nil)
name = ; -- convert to empty string for concatenation
end
name = name:gsub('%(%((.-)%)%)', '%1'); -- remove accept-as-written markup if present
names[enum] = name; -- save the modified name
end

local name_str = table.concat (names); -- concatenate the names
return ~= name_str and name_str or nil; -- return the concatenation if not empty string; nil else
end

--2 does
not see the template markup but instead sees the result of the template as html. cs1|2 strips the html which
leaves the displayed value for the anchor id. We can't do that here so, because templates aren't allowed in
parameters, we simply discard any templates found in the cs1|2 template.

this may leave a |lastn= parameter empty which will be treated as if it were really empty as cs1|2 do (three authors,
|last2= empty -> CITEREFLast1Last3YYYY (the harv and sfn render: 'Last1, & Last3 YYYY' with CITEREFLast1Last3YYYY).

local function template_strip (template)
template = template:gsub ('^$', , 1); -- remove outer (cs1|2 template delimiters)
template = template:gsub ('%b{}', ); -- remove any templates from the cs1|2 template
return template;
end

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

Returns a string where all of lua's magic characters have been escaped. This is important because functions like
string.gsub() treat their pattern and replace strings as patterns, not literal strings.

local function escape_lua_magic_chars (argument)
argument = argument:gsub("%%", "%%%%"); -- replace % with %%
argument = argument:gsub("([%^%$%(%)%.%[%]%%+%-%?])", "%%%1"); -- replace all other lua magic pattern characters
return argument;
end

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

Wikilink markup does not belong in an anchor id and can / does confuse the code that parses apart citation and
harvc templates so here we remove any wiki markup:
label -> label
link -> link

]=]

local function wikilink_strip (template)
for wikilink in template:gmatch ('%[%b[]%]') do -- get a wikilink
template = template:gsub ('%[%b[]%]', '__57r1P__', 1); -- install a marker
if wikilink:match ('%[%[.-|(.-)%]%]') then
wikilink = wikilink:match ('%[%[.-|(.-)%]%]'); -- extract label from complex label wikilink
else
wikilink = wikilink:match ('%[%[(.-)%]%]'); -- extract link from simple link wikilinks
end
wikilink = escape_lua_magic_chars (wikilink); -- in case there are lua magic characters in wikilink
template = template:gsub ('__57r1P__', wikilink, 1); -- replace the marker with the appropriate text
end

return template;
end

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

return the citation or harvc template's name; convert to lower case and trim leading and trailing whitespace;

when the template is a sandbox the subpage portion of the template name is omitted from the returned template name
returns cite book

local function template_name_get (template)
local template_name = template:match ('^{{%s([^/|}]+)'); -- get template name; ignore subpages ~/new, ~/sandbox; parser functions

if not template_name or template_name:match ('^') then -- parser functions, magic words don't count as templates
return nil; -- could not get template name from (possibly corrupt) template; extraneous opening { mid template can cause this;
end;
template_name = template_name:gsub ('%s$', ); -- trim trailing whitespace; leading whitespace already removed
return Lang_obj:ucfirst (template_name); -- first character in template name must be uppercase (same as canonical template name) TODO: better way to do this?
end

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

parse apart a template's parameters and store in the params table where key is the parameter's name and value is
the parameter's value; empty parameters are not saved

local function template_params_get (template, params)
template = wikilink_strip (template); -- because piped wikilinks confuse code that builds params{} and because wikilinks not allowed in an anchor id
-- strip templates after getting |ref= value because |ref= and |ref= are allowed
template = template_strip (template); -- because template markup can confuse code that builds params{} and because templates in name parameters are not allowed

template = template:gsub ('|%s|', '|'); -- when pipe follows pipe with or without white space, remove extraneous pipe

for param, value in template:gmatch ('|%s([^=]-)%s=%s([^|}]+)') do -- build a table of template parameters and their values
if value then -- there must be a value
if ~= value and not value:match ('^%s$') then -- skip when value is empty string or only whitespace
params[param] = mw.text.trim (value); -- add trimmed value else
end
end
end
end

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

makes anchor_id from or redirects

local function anchor_id_make_harvc (template)
local date = date_get (template, alias_patterns_harvc_date); -- get date; done here because might be in ; return date if valid; empty string else
local anchor_id;
local params = {}; -- table of harvc parameters
local id; -- custom anchor id for this template

id = template:match ('|%sid%s=%s(%b{})'); -- in case |id=; done here because templates will be stripped

template_params_get (template, params); -- build a table of template parameters and their values; this strips wikilinks and templates

if id then -- when set is or template
return sfnref_get (id); -- returns content of or ; nil else
end
if params.id then -- custom anchor for this template (text)
return params.id; -- |id= value as written
end

anchor_id = names_get (params, aliases_harvc_author); -- get the harvc contributor names

if anchor_id then -- if names were gotten
return 'CITEREF' .. anchor_id .. date;
end
return nil; -- no names; no anchor_id
end

--ref= to decide what to do:
|ref= - empty or missing: get names and date from whitelist defaults; override defaults from externally visible template parameters
|ref=harv - same as empty or missing
|ref= - assemble an anchor id from positional parameters
|ref= - assemble an anchor id from positional parameters
|ref=none - skip; do nothing because an anchor id intentionally suppressed; TODO: keep with a type code of '0'?
|ref= - save param value because may match an anchor id override value in template |ref= parameter or |id= parameter

local function anchor_id_make_wrapper (template)
local ref; -- content of |ref=
local template_name; -- name of the template
local anchor_id; -- the assembled anchor id from this template
local date;
local name_default;
local date_default;
local vol;
local params = {}; -- table of template parameters

template_name = template_name_get (template); -- get first char uppercase trimmed template name; ignore subpages ~/new, ~/sandbox
if not template_name or template_skip[template_name] then
return nil; -- could not extract template name from (possibly corrupted) template (extraneous opening { in the template will cause this)
end

date = date_get (template, alias_patterns_date); -- get date; done here because might be in
-- if == date then
-- date = whitelist.wrapper_templates[template_name][2] or ; -- no externally visible date so get default date
-- end

ref = template:match ('|%sref%s=%s(%b{})'); -- first look for |ref= or |ref= because we will strip templates from the wrapper template
if not ref then
if template:match ('|%sref%s=([^|}]+)') then -- |ref= not found; if there is a |ref= param with an assigned value
ref = template:match ('|%sref%s=([^|}]+)'); -- get the value; whitespace is a 'value'
if ref then -- nil when |ref=|... or when |ref=}} (no spaces between assignment operator and pipe or closing brace)
ref = mw.text.trim (ref); -- something, could be just whitespace, so trim leading / trailing whitespace
if == ref then -- trimming a string of whitespace makes an empty string
ref = nil; -- make empty ref same as missing ref
end
end
end
end

template_params_get (template, params); -- build a table of template parameters and their values

if whitelist.wrapper_templates[template_name][1] then -- is this wrapper a simple-default wrapper?
name_default = whitelist.wrapper_templates[template_name][1]; -- get the default names
date_default = whitelist.wrapper_templates[template_name][2]; -- get the default date
else
vol = params['volume'] or 'default';
if not whitelist.wrapper_templates[template_name][vol] then -- make sure this volume exists
vol = 'default'; -- doesn't exist, use default volume
end
name_default = whitelist.wrapper_templates[template_name][vol][1]; -- get the default names
date_default = whitelist.wrapper_templates[template_name][vol][2]; -- get the default date
end

if 'harv' == ref or not ref then -- |ref=harv specified or |ref= missing or empty
anchor_id = names_get (params, aliases_contributor) or -- get contributor, author, or editor names
names_get (params, aliases_author) or
vnames_get (params, 'vauthors') or -- |vauthors=
names_get (params, aliases_editor) or
vnames_get (params, 'veditors') or -- |veditors=
name_default; -- default names from whitelist
-- whitelist.wrapper_templates[template_name][1]; -- default names from whitelist

if == date then -- if date not provided in the template
date = date_default; -- use the default date from whitelist
end

if anchor_id then -- if names were gotten
anchor_id = 'CITEREF' .. anchor_id .. date;
end

elseif ref:match ('%b{}') then -- ref holds a template
anchor_id = sfnref_get (ref); -- returns content of or ; nil else

elseif 'none' == ref then -- |ref=none
return nil; -- anchor id expicitly suppressed

else
anchor_id = ref; -- |ref= may match an anchor id override value in template |ref= parameter
end

return anchor_id; -- anchor_id text; nil else
end

--2 template and cs1-like templates

inspect |ref= to decide what to do:
|ref= - empty or missing: get names and date from template parameters; all cs1|2 create CITEREF anchor IDs
|ref=harv - get names and date from template parameters
|ref= - assemble an anchor id from positional parameters
|ref= - assemble an anchor id from positional parameters
|ref=none - skip; do nothing because an anchor id intentionally suppressed; TODO: keep with a type code of '0'?
|ref= - save param value because may match an anchor id override value in template |ref= parameter or |id= parameter

local function anchor_id_make_cs12 (template)
local ref; -- content of |ref=
local template_name; -- name of the template
local anchor_id; -- the assembled anchor id from this template
local date;
local params = {}; -- table of template parameters

template_name = template_name_get (template); -- get first char uppercase trimmed template name; ignore subpages ~/new, ~/sandbox
if not template_name or template_skip[template_name] then
return nil; -- could not extract template name from (possibly corrupted) template (extraneous opening { in the template will cause this)
end

if redirects_patent[template_name] then
date = date_get (template, alias_patterns_patent_date); -- get date; done here because might be in
else
date = date_get (template, alias_patterns_date);
end

ref = template:match ('|%sref%s=%s(%b{})'); -- first look for |ref= or |ref= because we will strip templates from the cs1|2 template
if not ref then
if template:match ('|%sref%s=([^|}]+)') then -- |ref= not found; if there is a |ref= param with an assigned value
ref = template:match ('|%sref%s=([^|}]+)'); -- get the value; whitespace is a 'value'
if ref then -- nil when |ref=|... or when |ref=}} (no spaces between assignment operator and pipe or closing brace)
ref = mw.text.trim (ref); -- something, could be just whitespace, so trim leading / trailing whitespace
if == ref then -- trimming a string of whitespace makes an empty string
ref = nil; -- make empty ref same as missing ref
end
end
end
end

template_params_get (template, params); -- build a table of template parameters and their values

if not ref then -- |ref= not set, might be cite LSA which doesn't support |ref=
if 'cite lsa' == template_name then
return 'CITEREF' .. (params.last or ) .. (params.year or ); -- cite LSA always creates an anchor id using only |last= and |year= (no aliases)
end
end

if 'harv' == ref or not ref then -- |ref=harv specified or |ref= missing or empty
if redirects_patent[template_name] then -- if this is a cite patent template
anchor_id = names_get (params, aliases_inventor); -- inventor names only
else -- cs1|2 template
anchor_id = names_get (params, aliases_contributor) or -- get contributor, author, or editor names
names_get (params, aliases_author) or
vnames_get (params, 'vauthors') or -- |vauthors=
names_get (params, aliases_editor) or
vnames_get (params, 'veditors'); -- |veditors=
end

if anchor_id then -- if names were gotten
anchor_id = 'CITEREF' .. anchor_id .. date;
end

elseif ref:match ('%b{}') then -- ref holds a template
anchor_id = sfnref_get (ref); -- returns content of or ; nil else

elseif 'none' == ref and not redirects_patent[template_name] then -- |ref=none; not supported by cite patent
return nil; -- anchor id expicitly suppressed

else
anchor_id = ref; -- |ref= may match an anchor id override value in template |ref= parameter
end

return anchor_id; -- anchor_id text; nil else
end

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

adds an to table; for anchor IDs, the boolean argument must be set true; no return value

local function list_add (item, list, encode)
if item then -- if there was an item
if encode then -- for anchor IDs ...
item = mw.uri.anchorEncode (item); -- encode to remove wikimarkup, convert spaces to underscores etc
end

if not list[item] then -- if not already saved
list[item] = 1; -- save it
else -- here when this item already saved
list[item] = list[item] + 1; -- to indicate that there are multiple items
end
end
end

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

make anchor IDs from ; there may be more than one because is not limited to the number of
anchors it may hold.

local function anchor_id_make_anchor (template, anchor_id_list)
template = template:gsub ('^$', , 1); -- remove outer and template name

template = wikilink_strip (template); -- strip any wikilink markup (there shouldn't be any but just in case)

local params = {};
local anchor_id;

for param in template:gmatch ('%b{}') do -- loop through the template; remove and save templates (presumed to be sfnref or harvid)
table.insert (params, param); -- save it
template = template:gsub ('%b{}', , 1); -- remove it from source template
end

for _, t in ipairs (params) do -- spin through the templates in params
anchor_id = sfnref_get (t); -- attempt to decode and
if anchor_id then -- nil when not or
list_add (anchor_id, anchor_id_list, true); -- add anchor ID to the list
end
end

template = template:gsub ('|%s|', '|'); -- when pipe follows pipe with or without white space, remove extraneous pipe
template = template:gsub ('^|', ):gsub('|$', ); -- remove extraneous leading and trailing pipes

params = mw.text.split (template, '%s|%s'); -- split at the pipe and remove extraneous space characters

for _, t in ipairs (params) do -- spin through the anchor IDs
anchor_id = mw.text.trim (t); -- trim white space
if ~= anchor_id then -- should always have something
list_add (anchor_id, anchor_id_list, true); -- add anchor ID to the list
end
end
end

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

makes a list of templates use in the article.

local function template_list_add (template)
local template = template:match ('{{%s(.-)[|}]'); -- keep the case of the template - this is different from template_name_get()
if template and not template:match ('^') then -- found a template or magic word; ignore magic words
template=mw.text.trim (template); -- trim whitespace
template = Lang_obj:ucfirst (template); -- first character in template name must be uppercase (same as canonical template name) TODO: better way to do this?
list_add (template, template_list); -- add to list with (unused) tally
end
end

--2, cs1|2-like, vcite xxx, harvc, anchor, wikicite templates

Because cs1|2 wrapper templates can, and often do, hide the author and date parameters inside the wrapper,
these parameters are not available in the article's wikisource so , , and templates that
link correctly to those wrapper templates will incorrectly show error messages. Use |ignore-err=yes in the ,
, and templates to supress the error message.

creates a list of templates used in the article for use with the whitelist

creates a list of article-local whitelisted anchor IDs from

local function anchor_id_list_make ()
article_content_get (); -- attempt to get this article's content

if == Article_content then -- when there is no article content
return ; -- no point in continuing
end

local template; -- place to hold the template that we found
local template_name;
local anchor_id; -- place to hold an anchor id as it is extracted / decoded

local find_pattern = '%f[{]}

while tstart do
template = Article_content:match ('%b{}', tstart); -- get the whole template
if not template then
break; -- template is nil for some reason (last template missing closing }} for example) so declare ourselves done
end

template_name = template_name_get (template); -- get first char uppercase trimmed template name; ignore subpages ~/new, ~/sandbox
template_list_add (template); -- add this template's name to the list

if data.known_templates_cs12 [template_name] then
anchor_id = anchor_id_make_cs12 (template); -- extract an anchor id from this template
list_add (anchor_id, anchor_id_list, true)

elseif data.known_templates_vcite [template_name] then
local ref = template:match ('|%sref%s=%s(%b{})'); -- first look for |ref= or |ref= because we will strip templates from the vcite template
if ref then -- |ref=
anchor_id = sfnref_get (ref); -- returns content of or ; nil else
list_add (anchor_id, anchor_id_list, true);
else
local params = {};

template_params_get (template, params); -- build a table of template parameters and their values

anchor_id = params['ref']; -- when both set, vcite uses value from |ref=
if not anchor_id and params['harvid'] then
anchor_id = 'CITEREF' .. params['harvid']; -- in vcite, |harvid= auto-adds 'CITEREF' prefix to the value in |harvid=
end
list_add (anchor_id, anchor_id_list, true);
end

elseif data.known_templates_harvc [template_name] then
anchor_id = anchor_id_make_harvc (template); -- extract an anchor id from this template
list_add (anchor_id, anchor_id_list, true);

elseif data.known_templates_wikicite [template_name] then
local ref = template:match ('|%sref%s=%s(%b{})'); -- first look for |ref= or |ref=

if ref then
anchor_id = sfnref_get (ref);

elseif template:match ('|%sref%s=([^|}]+)') then
anchor_id = template:match ('|%sref%s=([^|}]+)'); -- plain-text

elseif template:match ('|%sid%s=%s(%b{})') then
ref = template:match ('|%sid%s=%s(%b{})');
anchor_id = 'Reference-' .. sfnref_get (ref);

elseif template:match ('|%sid%s=([^|}]+)') then
anchor_id = 'Reference-' .. template:match ('|%sid%s=([^|}]+)'); -- plain-text

else
anchor_id = nil; -- no matches, ensure that anchor_id has no value
end

if anchor_id then
list_add (anchor_id, anchor_id_list, true);
end

elseif data.known_templates_anchor [template_name] then
anchor_id_make_anchor (template, anchor_id_list); -- extract anchor ids from this template if any

elseif data.known_templates_sfn_whitelist [template_name] then
template = template:gsub ('^$', , 1); -- remove outer and template name
template = mw.text.trim (template, '%s|'); -- trim leading trailing white space and pipes
template = mw.text.split (template, '%s|%s'); -- make a table of the template's parameters

for _, anchor_id in ipairs (template) do -- spin through this template's parameter
if ~= anchor_id and not article_whitelist[anchor_id] then
article_whitelist[anchor_id] = 1; -- add to the whitelist
end
end

elseif template_name and whitelist.wrapper_templates[template_name] then
anchor_id = anchor_id_make_wrapper (template); -- extract an anchor id from this template if possible
list_add (anchor_id, anchor_id_list, true);

elseif template_name and template_name:match ('^Cit[ea]') then -- not known, not known wrapper; last gasp, try as cs1-like
anchor_id = anchor_id_make_cs12 (template); -- extract an anchor id from this template if possible
list_add (anchor_id, anchor_id_list, true);
end

tstart, tend = Article_content:find (find_pattern, tend); -- search for another template; begin at end of last search
end

mw.logObject (anchor_id_list, 'anchor_id_list');
mw.logObject (template_list, 'template_list');
mw.logObject (article_whitelist, 'article_whitelist');

return anchor_id_list;
end

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

return {
anchor_id_list = anchor_id_list_make(), -- table of anchor ids available in this article
article_whitelist = article_whitelist, -- table of anchor ids with false-positive error message to be suppressed
template_list = template_list, -- table of templates used in this article
}