Module:Citation/CS1/Utilities: Difference between revisions
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return error_comment( message, error_state.hidden ); | return error_comment( message, error_state.hidden ); | ||
end | 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 | |||
--[[--------------------------< 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 | |||
return { -- return exported functions and tables | return { -- return exported functions and tables | ||
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error_comment = error_comment, | error_comment = error_comment, | ||
set_error = set_error, | set_error = set_error, | ||
select_one = select_one, | |||
z = z, | z = z, | ||
} | } | ||