# Module:Citation/CS1/fa/Utilities

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local u = {}

local z = { error_categories = {}; -- for categorizing citations that contain errors error_ids = {}; message_tail = {}; maintenance_cats = {}; -- for categorizing citations that aren't erroneous per se, but could use a little work properties_cats = {}; -- for categorizing citations based on certain properties, language of source for instance };

--[[--------------------------< F O R W A R D D E C L A R A T I O N S >-------------------------------------- ]]

local cfg; -- table of tables imported from selected Module:Citation/CS1/Configuration

--[[--------------------------< I S _ S E T >------------------------------------------------------------------

Returns true if argument is set; false otherwise. Argument is 'set' when it exists (not nil) or when it is not an empty string.

]]

local function is_set( var ) return not (var == nil or var == ); end

--[[--------------------------< I N _ A R R A Y >--------------------------------------------------------------

Whether needle is in haystack

]]

local function in_array( needle, haystack ) if needle == nil then return false; end for n,v in ipairs( haystack ) do if v == needle then return n; end end return false; end

--[[--------------------------< S U B S T I T U T E >----------------------------------------------------------

Populates numbered arguments in a message string using an argument table.

]]

local function substitute( msg, args ) return args and mw.message.newRawMessage( msg, args ):plain() or msg; end

--[[--------------------------< E R R O R _ C O M M E N T >----------------------------------------------------

Wraps error messages with css markup according to the state of hidden.

]]

local function error_comment( content, hidden ) return substitute( hidden and cfg.presentation['hidden-error'] or cfg.presentation['visible-error'], content ); end

--[=[-------------------------< M A K E _ W I K I L I N K >----------------------------------------------------

Makes a wikilink; when bot link and display text is provided, returns a wikilink in the form D; if only link is provided, returns a wikilink in the form L; if neither are provided or link is omitted, returns an empty string.

]=]

local function make_wikilink (link, display) if is_set (link) then if is_set (display) then return table.concat ({'', display, ''}); else return table.concat ({'', link, ''}); end else return ; end end

--[[--------------------------< S E T _ E R R O R >--------------------------------------------------------------

Sets an error condition and returns the appropriate error message. The actual placement of the error message in the output is the responsibility of the calling function.

]]

local function set_error( error_id, arguments, raw, prefix, suffix ) local error_state = cfg.error_conditions[ error_id ];

prefix = prefix or ""; suffix = suffix or "";

if error_state == nil then error( cfg.messages['undefined_error'] ); -- because missing error handler in Module:Citation/CS1/Configuration elseif is_set( error_state.category ) then table.insert( z.error_categories, error_state.category ); end

local message = substitute( error_state.message, arguments );

message = table.concat ( { message, ' (', make_wikilink ( table.concat ( { cfg.messages['help page link'], '#', error_state.anchor }), cfg.messages['help page label']), ')' });

-- message = table.concat ({message, ' (', substitute (cfg.presentation['wikilink'], -- {cfg.messages['help page link'] .. '#' .. error_state.anchor, cfg.messages['help page label']}), ')'}); -- message = message .. " ([[" .. cfg.messages['help page link'] .. -- "#" .. error_state.anchor .. "|" .. -- cfg.messages['help page label'] .. "]])";

z.error_ids[ error_id ] = true; if in_array( error_id, { 'bare_url_missing_title', 'trans_missing_title' } ) and z.error_ids['citation_missing_title'] then return , false; end

message = table.concat({ prefix, message, suffix });

if raw == true then return message, error_state.hidden; end

return error_comment( message, error_state.hidden ); end

--[[-------------------------< I S _ A L I A S _ U S E D >-----------------------------------------------------

This function is used by select_one() to determine if one of a list of alias parameters is in the argument list provided by the template.

Input: args – pointer to the arguments table from calling template alias – one of the list of possible aliases in the aliases lists from Module:Citation/CS1/Configuration index – for enumerated parameters, identifies which one enumerated – true/false flag used choose how enumerated aliases are examined value – value associated with an alias that has previously been selected; nil if not yet selected selected – the alias that has previously been selected; nil if not yet selected error_list – list of aliases that are duplicates of the alias already selected

Returns: value – value associated with alias we selected or that was previously selected or nil if an alias not yet selected selected – the alias we selected or the alias that was previously selected or nil if an alias not yet selected

]]

local function is_alias_used (args, alias, index, enumerated, value, selected, error_list) if enumerated then -- is this a test for an enumerated parameters? alias = alias:gsub ('#', index); -- replace '#' with the value in index else alias = alias:gsub ('#', ); -- remove '#' if it exists end

if is_set(args[alias]) then -- alias is in the template's argument list if value ~= nil and selected ~= alias then -- if we have already selected one of the aliases local skip; for _, v in ipairs(error_list) do -- spin through the error list to see if we've added this alias if v == alias then skip = true; break; -- has been added so stop looking end end if not skip then -- has not been added so table.insert( error_list, alias ); -- add error alias to the error list end else value = args[alias]; -- not yet selected an alias, so select this one selected = alias; end end return value, selected; -- return newly selected alias, or previously selected alias end

--[[--------------------------< A D D _ M A I N T _ C A T >------------------------------------------------------

Adds a category to z.maintenance_cats using names from the configuration file with additional text if any. To prevent duplication, the added_maint_cats table lists the categories by key that have been added to z.maintenance_cats.

]]

local added_maint_cats = {} -- list of maintenance categories that have been added to z.maintenance_cats local function add_maint_cat (key, arguments) if not added_maint_cats [key] then added_maint_cats [key] = true; -- note that we've added this category table.insert( z.maintenance_cats, substitute (cfg.maint_cats [key], arguments)); -- make name then add to table end end

--[[--------------------------< S A F E _ F O R _ I T A L I C S >----------------------------------------------

Protects a string that will be wrapped in wiki italic markup ...

Note: We cannot use for italics, as the expected behavior for italics specified by ... in the title is that they will be inverted (i.e. unitalicized) in the resulting references. In addition, and tend to interact poorly under Mediawiki's HTML tidy.

]]

local function safe_for_italics( str ) if not is_set(str) then return str; else if str:sub(1,1) == "'" then str = "" .. str; end if str:sub(-1,-1) == "'" then str = str .. ""; end

-- Remove newlines as they break italics. return str:gsub( '\n', ' ' ); end end

--[[--------------------------< W R A P _ S T Y L E >----------------------------------------------------------

Applies styling to various parameters. Supplied string is wrapped using a message_list configuration taking one argument; protects italic styled parameters. Additional text taken from citation_config.presentation - the reason this function is similar to but separate from wrap_msg().

]]

local function wrap_style (key, str) if not is_set( str ) then return ""; elseif in_array( key, { 'italic-title', 'trans-italic-title' } ) then str = safe_for_italics( str ); end

return substitute( cfg.presentation[key], {str} ); end

--[[--------------------------< S E L E C T _ O N E >----------------------------------------------------------

Chooses one matching parameter from a list of parameters to consider. The list of parameters to consider is just names. For parameters that may be enumerated, the position of the numerator in the parameter name is identified by the '#' so |author-last1= and |author1-last= are represented as 'author-last#' and 'author#-last'.

Because enumerated parameter |<param>1= is an alias of |<param>= we must test for both possibilities.

Generates an error if more than one match is present.

]]

local function select_one( args, aliases_list, error_condition, index ) local value = nil; -- the value assigned to the selected parameter local selected = ; -- the name of the parameter we have chosen local error_list = {};

if index ~= nil then index = tostring(index); end

for _, alias in ipairs( aliases_list ) do -- for each alias in the aliases list if alias:match ('#') then -- if this alias can be enumerated if '1' == index then -- when index is 1 test for enumerated and non-enumerated aliases value, selected = is_alias_used (args, alias, index, false, value, selected, error_list); -- first test for non-enumerated alias end value, selected = is_alias_used (args, alias, index, true, value, selected, error_list); -- test for enumerated alias else value, selected = is_alias_used (args, alias, index, false, value, selected, error_list); --test for non-enumerated alias end end

if #error_list > 0 and 'none' ~= error_condition then -- for cases where this code is used outside of extract_names() local error_str = ""; for _, k in ipairs( error_list ) do if error_str ~= "" then error_str = error_str .. cfg.messages['parameter-separator'] end error_str = error_str .. wrap_style ('parameter', k); end if #error_list > 1 then error_str = error_str .. cfg.messages['parameter-final-separator']; else error_str = error_str .. cfg.messages['parameter-pair-separator']; end error_str = error_str .. wrap_style ('parameter', selected); table.insert( z.message_tail, { set_error( error_condition, {error_str}, true ) } ); end

return value, selected; end

--[=[-------------------------< R E M O V E _ W I K I _ L I N K >----------------------------------------------

Gets the display text from a wikilink like B or B gives B

The str:gsub() returns either A|B froma B or B from B or B from B (no wikilink markup).

In l(), l:gsub() removes the link and pipe (if they exist); the second :gsub() trims white space from the label if str was wrapped in wikilink markup. Presumably, this is because without wikimarkup in str, there is no match in the initial gsub, the replacement function l() doesn't get called.

]=]

local function remove_wiki_link (str) return (str:gsub( "%[%[([^%[%]]*)%]%]", function(l) return l:gsub( "^[^|]*|(.*)$", "%1" ):gsub("^%s*(.-)%s*$", "%1"); end)); end

--[=[-------------------------< I S _ W I K I L I N K >--------------------------------------------------------

Determines if str is a wikilink, extracts, and returns the the wikilink type, link text, and display text parts. If str is a complex wikilink (D): returns wl_type 2 and D and L from D; if str is a simple wikilink (D) returns wl_type 1 and D from D and L as empty string; if not a wikilink: returns wl_type 0, str as D, and L as empty string.

trims leading and trailing white space and pipes from L and D (L and D are accepted by MediaWiki and treated like D; while [[|D|]] is not accepted by MediaWiki, here, we accept it and return D without the pipes).

]=]

local function is_wikilink (str) local D, L local wl_type = 2; -- assume that str is a complex wikilink D

L, D = str:match ('%[%[([^|]+)|([^%]]+)%]%]'); -- get L and D from D

if not is_set (D) then -- if no separate link D = str:match ('%[%[([^%]]*)|*%]%]'); -- get D from D wl_type = 1; end

if not is_set (D) then -- no wikilink markup D = str; -- return the string as D wl_type = 0; -- but say that it is not a wikilink end

D = mw.text.trim (D, '%s|'); -- trim white space and pipe characters L = L and mw.text.trim (L, '%s|');

return wl_type, D, L or ; end

--[[--------------------------< S E T _ S E L E C T E D _ M O D U L E S >--------------------------------------

Sets local cfg table to same (live or sandbox) as that used by the other modules.

]]

local function set_selected_modules (cfg_table_ptr) cfg = cfg_table_ptr;

end

return { -- return exported functions and tables is_set = is_set, in_array = in_array, substitute = substitute, error_comment = error_comment, set_error = set_error, select_one = select_one, add_maint_cat = add_maint_cat, wrap_style = wrap_style, safe_for_italics = safe_for_italics, remove_wiki_link = remove_wiki_link, is_wikilink = is_wikilink, make_wikilink = make_wikilink, set_selected_modules = set_selected_modules, z = z, }

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