Extracting the content of a zip file

DanielKotzer

Hi, Is there a way to extract the content of a zip file with GDScript? I don't want to read from within the zip file, I want to extract the content of the zip file and then read from it, is it possible?

TwistedTwigleg

It seems there is currently in built-in way to pack or unpack zip files in Godot according to this open GitHub issue. It seems there is a pull request to expose the minizip API Godot uses to GDScript, but it hasn't been merged.

You might be able to build a GDNative plugin for unpacking zip files though, but I have no idea how easy/hard it would be do to.

DanielKotzer

I found a way, I use Gdunzip.gd to read the content of the zip file, but I don't use it to extract because it is too slow, so for extraction I use this script (see attached text file just change the name to unzip.gd) .

the usage is like this:

var Unzip = load('res://addons/gdunzip/unzip.gd').new()
Unzip.unzip("zip file path","destination of extraction path")

you can also use resources in a zip file like this:

ProjectSettings.load_resource_pack("zip file path")
var data = load("import/x.tscn").instance()
add_child(data)

but I was looking for a way to unzip a zip file, not just read it's content, so the above way is the solution.

DanielKotzer

here is the code for the file it didn't upload (the name should be unzip.gd):

var storage_path
var zip_file

func unzip(sourceFile,destination):
	zip_file = sourceFile
	storage_path = destination
	
	var gdunzip = load('res://addons/gdunzip/gdunzip.gd').new()
	var loaded = gdunzip.load(zip_file)

	if !loaded:
		print('- Failed loading zip file')
		return false
		
	ProjectSettings.load_resource_pack(zip_file)
	
	var i = 0
	for f in gdunzip.files:
		unzip_file(f)

func unzip_file(fileName):
	var readFile = File.new()
	if readFile.file_exists("res://"+fileName):
		readFile.open(("res://"+fileName), File.READ)
		var content = readFile.get_buffer(readFile.get_len())
		readFile.close()
		
		var base_dir = storage_path + fileName.get_base_dir()
		
		var dir = Directory.new()
		dir.make_dir(base_dir)
		
		var writeFile = File.new()
		writeFile.open(storage_path + fileName, File.WRITE)
		writeFile.store_buffer(content)
		writeFile.close()
	
	
```

GForce

Thanks for sharing this! The unzipping works very well. However, the following line causes trouble: ProjectSettings.load_resource_pack(zip_file) Because later on in the game, I need to list all items of a directory, using the following.

func ListItemsInDirectory(path):
	var items = []
	var dir = Directory.new()
	dir.open(path)
	dir.list_dir_begin(true, false)

	while true:
		var file = dir.get_next()
		if file == "":
			break
		items.append(file)
	dir.list_dir_end()

	return items

But every time get_next() is used, it returns a file name that was inside zip_file, and then the next in that zip_file etc. Also, things like this don't work anymore: Directory.remove("path/to/file")

How can I get Godot to stop looking at that zip_file?