function nl()	
return('\n')
end

newline='\n'

TabOfBibliography={}
Tabofitems={}

function addtoTabofitems(item)
	local vyskyt = false
	for i = 1, #Tabofitems do
	 if Tabofitems[i] == item then vyskyt = true end 
	end
	if not(vyskyt) then table.insert(Tabofitems,item) end
end

function insertintobibliography(item, content)
 table.insert(TabOfBibliography,item,content)
end


function createbibliographyfile()
-- This function creates a component that has already sorted the bibl. items 
-- which respectively appear in the bibliography. There are read command \component tmp_genbiblfile
		bibliography=io.open('tmp_genbiblfile.tex',"w+")
		local varbibliography='% This file is automatically generated createbibliographyfile lua function () '..newline..newline
		varbibliography=varbibliography..'\\startcomponent tmp_genbiblfile'..newline
		varbibliography=varbibliography..'\\product dphk'..newline
		varbibliography=varbibliography..'\\environment dp_env'..newline..newline
		varbibliography=varbibliography..'\\startbibliography'..newline..newline
		for i=1, table.getn(Tabofitems) do 
		  local tempvar1=Tabofitems[i]
		  local tempvar2=TabOfBibliography[tonumber(tempvar1)]
			varbibliography=varbibliography..'\\item[bibl:'..tempvar1..'] '
			varbibliography=varbibliography..'('..tempvar1..') ' -- nakonec zakomentovat
 			varbibliography=varbibliography..tempvar2..newline..newline
 		end	
 	varbibliography=varbibliography..'\\stopbibliography'..newline
 	varbibliography=varbibliography..'\\stopcomponent'..newline
 	varbibliography=string.gsub(varbibliography, 'ZNAKPROCENTA', '\\letterpercent')
 	varbibliography=string.gsub(varbibliography, 'URLBIB:', '\\URLBIB:') 
	bibliography:write(varbibliography)
	bibliography:close() 	
end