Module:TemplateDataDoc

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This module automatically generates blocks of template documentation page using TemplateData.

  • {{#invoke:TemplateDataDoc|generateBlank}} — generates blank template wikitext (Template:Začetok šablona)
  • {{#invoke:TemplateDataDoc|generateExample}} — generates template example wikitext and shows how a template with such parameters will be displayed (Template:Priklad šablona)

For correct order of parameters, TemplateData should contain paramOrder block.

local docSubPage = mw.message.new( 'Templatedata-doc-subpage' ):plain();

local p = {};

local lastNumber = 0;

-- Enable/disable additional spacing for block-formatted templates
local formatBlockSpaces = false;

local noDocNote = 'TemplateDataDoc: Skladovajte stranicu, da by okazati kod šablona.';

function p.processJson( json )
	local status, data = pcall( mw.text.jsonDecode, json );
	if status == false then
		return nil;
	end

	if not data[ 'paramOrder' ] then
		data[ 'paramOrder' ] = {};
		for paramName, paramData in pairs( data[ 'params' ] ) do
			table.insert( data[ 'paramOrder' ], paramName );
		end
	end
	
	local deprecatedParams = {
		'nocat',
		'nocoord',
		'nocatcoord',
	};
	for _, param in ipairs( deprecatedParams ) do
		if data[ 'params' ][ param ] ~= nil then
			data[ 'params' ][ param ][ 'deprecated' ] = '-';
		end
	end

	return data;
end

function p.getTemplateData( pageName )
	local title = mw.title.makeTitle( 0, pageName );
	if not title or not title.exists or not title:getContent() then
		return false;
	end;

	local json = mw.ustring.match( title:getContent(), '<templatedata%s*>(.*)</templatedata%s*>' );
	if not json then
		return nil;
	end
	
	return p.processJson( json )
end

function p.getValue( data, key )
	if data[ key ] then
		return data[ key ];
	end
	
	-- Numbered keys return as numbers
	local nkey = tonumber( key );
	if nkey ~= nil and data[ nkey ] then
		return data[ nkey ];
	end
	
	return {};
end

-- See https://phabricator.wikimedia.org/diffusion/ETDA/browse/master/Specification.md?as=remarkup
-- We need a global format value for the 'block' and 'inline': [[phab:T205438]]
function p.convertFormatString( rawTemplateFormat )
	local templateFormat = rawTemplateFormat or 'inline';
	local isBlockFormatted = false;
	if templateFormat == 'block' then
		templateFormat = '{{_\n| _ = _\n}}';
		isBlockFormatted = true;
	elseif templateFormat == 'inline' then
		templateFormat = '{{_|_=_}}';
	end
	
	return templateFormat, isBlockFormatted;
end

function p.getFormatParts( rawTemplateFormat, templateName )
	local templateFormat, isBlockFormatted = p.convertFormatString( rawTemplateFormat );
	local nameFormat = mw.ustring.match( templateFormat, '^[^|]+' );
	local paramKeyFormat = mw.ustring.match( templateFormat, '%|[^=]+=' );
	local paramValueFormat = mw.ustring.match( templateFormat, '=[^}]+' );
	paramValueFormat = mw.ustring.sub( paramValueFormat, 2 );
	local endFormat = mw.ustring.match( templateFormat, '%}%}.*$' );
	local startFormat = mw.ustring.gsub( nameFormat, '_', templateName );
	
	return isBlockFormatted, startFormat, endFormat, paramKeyFormat, paramValueFormat;
end

function p.formatKeyValue( key, parameterData, formatData )
	if parameterData[ 'deprecated' ] then
		return '';
	end
	local args = formatData.args;
	local parameterName = key;
	local nkey = tonumber(key);
	
	-- Add additional spacing to string keys
	if formatBlockSpaces and formatData.isBlockFormatted then
		if nkey == nil or lastNumber ~= nkey - 1 then
			while mw.ustring.len( key ) < formatData.parameterLength do
				key = key .. ' ';
			end
		end
	end
	
	-- Remove numbering for adjacent numbered keys
	if nkey ~= nil and lastNumber == nkey - 1 then
		key = '';
		lastNumber = nkey;
	end

	local value = '';
	if formatData.valueKey == 'example' and parameterData[ 'example' ] then
		-- Example
		value = parameterData[ 'example' ];
	else
		if formatData.valueKey == 'description' and parameterData[ 'description' ] then
			-- Description
			value = parameterData[ 'description' ];
			if value ~= '' then
				value = '&lt;!-- ' .. value .. ' --&gt;';
			end
		elseif parameterData[ 'autovalue' ] then
			-- Autovalue
			value = parameterData[ 'autovalue' ];
		end
		if args[ '$' .. parameterName ] and args[ '$' .. parameterName ] ~= '' then
			-- Custom values from template call
			value = args[ '$' .. parameterName ];
		end
	end

	local formattedKey = mw.ustring.gsub( formatData.paramKeyFormat, '_+', key, 1 );
	if key == '' then
		formattedKey = mw.ustring.gsub( formattedKey, '=', '' );
	end

	return formattedKey .. mw.ustring.gsub( formatData.paramValueFormat, '_', value, 1 );
end

function p.generateBlankCode( templateData, templateName, args )
	if templateData == false then
		return '{{' .. templateName .. '}}';
	end
	
	local parameterLength = 0;
	for i, parameterName in ipairs( templateData[ 'paramOrder' ] ) do
		local parameterData = p.getValue( templateData[ 'params' ], parameterName );
		if not parameterData[ 'deprecated' ] then
			local length = mw.ustring.len( parameterName );
			if length > parameterLength then
				parameterLength = length;
			end
		end
	end

	local isBlockFormatted, startFormat, endFormat, paramKeyFormat, paramValueFormat = p.getFormatParts( templateData[ 'format' ], templateName );
	local out = startFormat;

	lastNumber = 0;
	for i, parameterName in ipairs( templateData[ 'paramOrder' ] ) do
		local parameterData = p.getValue( templateData[ 'params' ], parameterName );
		if parameterData[ 'inherits' ] then
			parameterData = p.getValue( templateData[ 'params' ], parameterData[ 'inherits' ] );
		end
		
		out = out .. p.formatKeyValue( parameterName, parameterData, {
			args = args,
			valueKey = ( args[ 'description' ] and 'description' or nil ),
			isBlockFormatted = isBlockFormatted,
			parameterLength = parameterLength,
			paramKeyFormat = paramKeyFormat,
			paramValueFormat = paramValueFormat,
		} );
	end
	
	return out .. endFormat;
end

function p.generateBlank( frame )
	local frame = mw.getCurrentFrame();
	local getArgs = require( 'Module:Arguments' ).getArgs;
	local args = getArgs( frame );
	local templateName = frame.args[ 1 ];
	table.remove( args, 1 );
	
	local docPage = 'Template:' .. templateName .. '/' .. docSubPage;
	local templateData = p.getTemplateData( docPage );
	local out = p.generateBlankCode( templateData, templateName, args );

	local previewNote = ''
	if templateData == false and frame:preprocess('{{REVISIONID}}') == '' then
		previewNote = '<div class="warningbox">' .. noDocNote .. '</div>';
	end
	
	return previewNote .. frame:extensionTag{ name = 'pre', content = out };
end

function p.generateExampleCode( templateData, templateName, args )
	if templateData == false then
		return '{{' .. templateName .. '}}';
	end
	
	local parameterLength = 0;
	for i, parameterName in ipairs( templateData[ 'paramOrder' ] ) do
		local parameterData = p.getValue( templateData[ 'params' ], parameterName );
		if parameterData[ 'example' ] and not parameterData[ 'deprecated' ] then
			local length = mw.ustring.len( parameterName );
			if length > parameterLength then
				parameterLength = length;
			end
		end
	end

	local isBlockFormatted, startFormat, endFormat, paramKeyFormat, paramValueFormat = p.getFormatParts( templateData[ 'format' ], templateName );
	local out = startFormat;

	lastNumber = 0;
	for i, parameterName in ipairs( templateData[ 'paramOrder' ] ) do
		local parameterData = p.getValue( templateData[ 'params' ], parameterName );
		if parameterData[ 'inherits' ] then
			parameterData = p.getValue( templateData[ 'params' ], parameterData[ 'inherits' ] );
		end
		
		if parameterData[ 'example' ] then
			out = out .. p.formatKeyValue( parameterName, parameterData, {
				args = args,
				valueKey = 'example',
				isBlockFormatted = isBlockFormatted,
				parameterLength = parameterLength,
				paramKeyFormat = paramKeyFormat,
				paramValueFormat = paramValueFormat,
			} );
		end
	end
	
	return out .. endFormat;
end	

function p.generateExample( frame )
	local frame = mw.getCurrentFrame();
	local args = frame.args;
	local templateName = frame.args[ 1 ];
	local docPage = 'Template:' .. templateName .. '/' .. docSubPage;
	local templateData = p.getTemplateData( docPage );
	local out = p.generateExampleCode( templateData, templateName, args );
	
	local previewNote = ''
	if templateData == false and frame:preprocess('{{REVISIONID}}') == '' then
		previewNote = '<div class="warningbox">' .. noDocNote .. '</div>';
	end
	
	return previewNote .. frame:preprocess( out ) .. frame:extensionTag{ name = 'pre', content = out };
end

return p;