Module:TrainingPages

--The purpose of this module is to take a list of linked page, and use it to determine the next and previous page in the list as well as the total number of pages. local p = {} function anonymize(name) return mw.ustring.gsub(name,"^"..mw.site.siteName,"Project") or name end

function out(name) return mw.ustring.gsub(name,"^Project",mw.site.siteName) or name end

function keyize(pagename) -- there was a complaint about "_" breaking things. Do all lookups with _ in place of any space. -- also spaces in the index file (non-module) were causing trouble pagename = mw.text.trim(pagename) pagename = mw.ustring.gsub(pagename, " ", "_") pagename = mw.uri.decode(pagename) pagename = anonymize(pagename) return pagename end

function p.main(frame,displacement,varstoreturn) local parent=frame.getParent(frame) local currentpage,indexmodule,defaultpage,noerr args in the #invoke itself trump args in the parent frame currentpage = frame.args.page and mw.text.trim(frame.args.page) defaultpage = frame.args.defaultpage and mw.text.trim(frame.args.defaultpage) indexmodule = frame.args.index and mw.text.trim(frame.args.index) displacement = displacement or frame.args.displacement -- can be passed from the other function names at the end noerr=frame.args.noerr -- used as boolean anonymizereturn = frame.args.anonymize -- used as boolean args in the parent frame come next if parent then currentpage=currentpage or (parent.args.page and mw.text.trim(parent.args.page)) indexmodule=indexmodule or (parent.args.index and mw.text.trim(parent.args.index)) -- index is a module return{'page1','page2', ...} defaultpage=defaultpage or (parent.args.defaultpage and mw.text.trim(parent.args.defaultpage)) noerr=noerr or parent.args.noerr anonymizereturn = anonymizereturn or parent.args.anonymize end default values if parameters aren't provided defaultpage=defaultpage or "" -- don't know where to send people by default if not(indexmodule) then return "Module:TrainingPages error:no index parameter specified" end if not(currentpage) then local pp=mw.title.getCurrentTitle if not pp then if noerr then return "","","" else return "Module:TrainingPages error:failed to access getCurrentTitle" -- this shouldn't happen anyway, I don't think.... end end currentpage=pp.fullText end currentpage=anonymize(currentpage) --- convert "Wikipedia:, "Meta:" etc. into "Project: local index={} if mw.ustring.sub(indexmodule,1,6)=="Module" then get a table of the pages in order from indexmodule index=mw.loadData(indexmodule) else pp=mw.title.new(indexmodule) if not pp then if noerr then return "","","" else return "Module:TrainingPages error (index parameter): failed to access mw.title.new("..tostring(indexmodule)..") to load the index file",false,false,true end end local textindex=pp.getContent(pp) if not textindex then if noerr then return "","","" else return "Module:TrainingPages error (index parameter):failed to access mw.title.new("..indexmodule.."):getContent to load the index data",false,false,true end end prowl=mw.ustring.gmatch(textindex,"%[%[(.-)[%]|]") -- first half of any wikilink index={} repeat link=prowl if not(link) then break end link = mw.text.trim(link) if link~="" then table.insert(index,link) end until false end displacement = displacement or 0 -- assume a null parameter is just display the same set up the reverse lookup in lookup. it would be faster to set this up in the indexmodule but we don't want inconsistencies from user input! local lookup={} local i=0 repeat i=i+1 local j=index[i] if j then lookup[keyize(j)]=i else break end -- lookup["page name"] => page number until false --- get the page to return local returnpage,currentpagenumber if tonumber(currentpage) then currentpagenumber=tonumber(currentpage) returnpage=index[currentpagenumber+displacement] or defaultpage elseif (lookup[keyize(currentpage)]) then currentpagenumber=lookup[keyize(currentpage)] returnpage=index[currentpagenumber+displacement] or defaultpage else returnpage=defaultpage end if anonymizereturn then returnpage=anonymize(returnpage) else returnpage=out(returnpage) end if returnpage then returnpage = mw.text.trim(returnpage) end if not(varstoreturn) then return tostring(returnpage) else return tostring(returnpage),currentpagenumber,#index end end -- Return the next page in the index -- Used like if on a page that is part of the index: -- -- Used like this to find the next page after a specified page: --

function p.next_page(frame) local returnpage,pagenumber,totalpages,errcode=p.main(frame,1,true) return returnpage end p.next = p.next_page -- Same as above, but returns the previous page function p.last_page(frame) local returnpage,pagenumber,totalpages,errcode=p.main(frame,-1,true) return returnpage end p.last = p.last_page function p.page_number(frame) local returnpage,pagenumber,totalpages,errcode=p.main(frame,0,true) if errcode then return returnpage else return pagenumber end end p.page = p.page_number

function p.total_pages(frame) local returnpage,pagenumber,totalpages,errcode=p.main(frame,0,true) if errcode then return returnpage else return totalpages end end p.total = p.total_pages

return p