Module:Extract short description: Difference between revisions

Revision as of 22:14, 8 October 2018

Revision as of 20:05, 9 October 2018

Line 11:

frame: frame object required to preprocess template_name

article_title: the name of the article to inspect - correct spelling and captialization is required

templatetemplate_names_tbl: thetable nameof template names without namespace ofto the template tobe inspectinspected - correct spelling and captialization is required

returns two values:

on success, returns the short description text; errorand message elsetrue

on failure, returns error message and nil

]]

--local function extract_from_template (frame, article_title, template_nametemplate_names)

local function extract_from_template (frame, article_title, template_names_tbl)

local content = mw.title.new (article_title):getContent(); -- read the unparsed article source

if not content then

return '<span style="font-size:100%;" class="error">error: no article: ' .. article_title .. '</span>';

end

local template_name_pattern;

local start

localfor _, template_name in ipairs (template_names_tbl) do
template_name_pattern = template_name:gsub ('^%a', string.lower):gsub ('^%a', '%[%1%1%]'):gsub ('%[%a', string.upper); -- make lua pattern for initial letter upper or lower case: A -> [Aa]

local start = string.content:find (content, '{{%s*' .. template_name_pattern); -- find the start of {{template name ...;

if not start then

break; -- found a matching template

end

end

if not start then -- no templates found: return name of first template in template_names_tbl in error message

local start = string.find (content, '{{%s*' .. template_name_pattern); -- find the start of {{template name ...;

return '<span style="font-size:100%;" class="error">error: no template: ' .. template_nametemplate_names_tbl[1] .. ' in: ' .. article_title .. '</span>';

if not start then

return '<span style="font-size:100%;" class="error">error: no template: ' .. template_name .. ' in: ' .. article_title .. '</span>';

end

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end

return text and mw.text.trim (text), true; -- trim whitespace and done

-- preprocess the template then apply syntax highlighting

-- this will display the preprocessed template; not usable here

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return extract_from_article (article_title);

end

end

-----test-----

-- temporary test function to be deleted

local function test (frame)

local tbl = {'Infobox television episode/sandbox', 'short description'};

local text, good = extract_from_template (frame, 'User:Trappist the monk/sandbox', tbl);

if good then

return text;

else

return 'extract_from_template() returned this: ' .. text

end

end

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extract_short_description = extract_short_description,

extract_from_template = extract_from_template,

extract_from_article = extract_from_article,

test = test, -- to be deleted

}