The Buddy Cianci story will make it to the big screen by hook or by crook. OK, maybe that’s a poor choice of words. But the long-gestating biopic about the former Providence mayor does appear to be on the fast track now that David O. Russell has signed on to direct. Russell, who got an Oscar nomination for “The Fighter,’’ is making the movie based on Cianci’s memoir, “Politics and Pasta: How I Prosecuted Mobsters, Rebuilt a Dying City, Advised a President, Dined With Sinatra, Spent Five Years in a Federally Funded Gated Community and Lived to Tell the Tale.’’ The film’s being produced by the Big Apple-based production company of Robert De Niro and Jane Rosenthal. A few years back, Cianci, who was the mayor of Providence for two decades, told us the film would tell the whole story. “This is going to be the true account of the rise and also the fall,’’ said Cianci (inset), who in 2002 was convicted of conspiracy and sentenced to five years in prison. “It’ll be an interesting story of politics and ethnicity. There is an element of tragedy, but also a lot of funny, compelling stuff.’’ No word on who will play Cianci, but it’ll have to be someone who can wear a bad toupee.