list-formats.lua

list-formats.lua

--- Lists the formats that support all the extensions given on the command line.
--
-- Usage:
--
--     pandoc lua list-formats.lua [extensions,...]
--
-- Example:
--
--     $ pandoc lua list-formats.lua native_numbering citations
--     docx
--

-- Create a sorted list of all known formats.
local formats = pandoc.List{}
for fmt in pairs(pandoc.readers) do
  formats:insert(fmt)
end
for fmt in pairs(pandoc.writers) do
  if not formats:includes(fmt) then
    formats:insert(fmt)
  end
end
formats:sort()

-- Iterate over all known formats, and print those that support *all*
-- given extensions.
for i, format in ipairs(formats) do
  for j, ext in ipairs(arg) do
    if not pandoc.format.all_extensions(format):includes(ext) then
      goto continue
    end
  end
  print(format)
  ::continue::
end