Usage: aseprite -b file.aseprite -script show-category-names.lua

show-category-names.lua

local PK = "aseprite/Attachment-System"
local sprite = app.activeSprite

function find_tileset_by_catID(catID)
  for _,ts in ipairs(sprite.tilesets) do
    if ts.properties(PK) and
       ts.properties(PK).id == catID then
      return ts
    end
  end
end

for i,layer in ipairs(sprite.layers) do
  if layer.properties(PK) then
    print(layer.name .. ' Categories:')
    for j,catID in ipairs(layer.properties(PK).categories) do
      local tileset = find_tileset_by_catID(catID)
      if tileset then
        if tileset.name == "" then
          print(' - Empty category name (catID=' .. catID .. ')')
        else
          print(' - ' .. tileset.name .. ' (catID=' .. catID .. ')')
        end
      end
    end
  else
  end
end