miniz_extract_all_example.lua

-- A simple showcase of how to possibly use miniz, this defines a function
-- extract, which takes a string to the path of a zip file
-- and extracts all of its contents into a folder in the same path of the same name of the file

local miniz = require('miniz')
local path = require('path')
local fs = require('fs')

local function extract(zip_file)
  local reader = miniz.new_reader(zip_file)
  if not reader then
    error('Path is not a zip file')
  end

  local dirname = path.basename(zip_file, '.zip')
  -- we don't use the same name as it is not allowed to have a folder and a file of the same name on some filesystems
  assert(fs.mkdirSync(dirname .. '_extracted'))

  local total_files = reader:get_num_files()
  for i = 1, total_files do
    local fpath = path.join(dirname, reader:get_filename(i))
    assert(fs.writeFileSync(fpath, reader:extract(i)))
  end
  return total_files
end

extract('./test.zip')