local LibDeformat = LibStub("LibDeformat-3.0")

LibDeformat("Hello, friend", "Hello, %s") => "friend"
LibDeformat("Hello, friend", "Hello, %1$s") => "friend"
LibDeformat("Cost: $100", "Cost: $%d") => 100 -- note that it converted it back to a number
LibDeformat("Cost: $100", "Cost: $%1$d") => 100
LibDeformat("Alpha, Bravo", "%s, %s") => "Alpha", "Bravo"
LibDeformat("Alpha, Bravo", "%1$s, %2$s") => "Alpha", "Bravo"
LibDeformat("Alpha, Bravo", "%2$s, %1$s") => "Bravo", "Alpha" -- this can happen in foreign languages
LibDeformat("Hello, friend", "Cost: $%d") => nil -- nil is returned when there is no match

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  • #1

  jerry Jan 05, 2010 at 10:13 UTC - 0 likes

  As http://www.lua.org/pil/17.html (look at the last paragraph), you can't have a table with strings as weak keys.

  When I adapted LibItemBonus to LibStub, I had to drop Deformat and use my own solution. After some refinement, I finally got a working solution (GetPattern) which does pretty much what LibDeformat-3.0 does, except without caching. (The API returns a callable that can be reused to check new strings). i.e:

  local handler = GetPattern("Hello, %s")
  
  print(handler("Hello, friend")) => "friend"
  

  Look at the GetPattern implementation from the Core.lua file in LibItemBonus-2.0 for details.