Package manager app started using tkinter

source/packages/__init__.py

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+
+from .manager import PackageManager

source/packages/errors.py

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+class FilepathNotFound(Exception):
+	pass
+
+class GamePackageMissing(Exception):
+	pass
+
+class GamePackageMalformed(Exception):
+	pass
+
+class PackageAlreadyLoaded(Exception):
+	pass
+
+class InvalidPackageType(Exception):
+	pass

source/packages/manager.py

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+
+import os, json
+from .package import Package
+from .errors import *
+
+class PackageManager:
+	def __init__(self, vfs):
+		self.vfs = vfs
+		self.package_map = {}
+		self.package_list = []
+		self.main_package = None
+
+	def get_package_meta(self, filepath):
+		if not os.path.exists(filepath):
+			raise FilepathNotFound(filepath)
+		gamepkg_path = os.path.join(filepath, 'gamepackage.json')
+		if not os.path.exists(gamepkg_path):
+			raise GamePackageMissing(gamepkg_path)
+		meta = json.load(open(gamepkg_path))
+		if 'name' not in meta or 'type' not in meta:
+			raise GamePackageMalformed(gamepkg_path)
+		return meta
+
+	def set_main_package(self, filepath):
+		meta = self.get_package_meta(filepath)
+		if meta['type'] != 'main':
+			raise InvalidPackageType(filepath, meta['type'])
+		vfs_path = f'/main/'
+		self.vfs.mount(filepath, vfs_path, 0)
+		new_package = Package(type('', (object,), meta), vfs_path, self.vfs)
+		self.main_package = new_package
+
+	def include_package(self, filepath):
+		meta = self.get_package_meta(filepath)
+		if meta['name'] in self.package_map:
+			raise PackageAlreadyLoaded(meta['name'])
+		vfs_path = f'/include/{meta["name"]}'
+		self.vfs.mount(filepath, vfs_path, 0) 
+		new_package = Package(type('', (object,), meta), vfs_path, self.vfs)
+		self.package_map[meta['name']] = new_package
+		self.package_list.insert(0, new_package)

source/packages/package.py

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+
+import posixpath
+from direct.stdpy.file import walk
+
+class Package:
+	def __init__(self, meta, mount_dir, vfs):
+		self.meta = meta
+		self.mount_dir = mount_dir
+		self.vfs = vfs
+	
+	def all_models(self):
+		models_path = posixpath.join(self.mount_dir, 'models')
+		output = []
+		for root, paths, files in walk(models_path):
+			rel_root = root.replace(f'{models_path}', '').strip()
+			if len(rel_root) > 0 and rel_root[0] == '/':
+				rel_root = rel_root[1:]
+			for filepath in files:
+				output.append(posixpath.join(rel_root, filepath))
+		return output
+
+	def all_textures(self):
+		textures_path = posixpath.join(self.mount_dir, 'textures')
+		output = []
+		for root, paths, files in walk(textures_path):
+			rel_root = root.replace(f'{textures_path}', '').strip()
+			if len(rel_root) > 0 and rel_root[0] == '/':
+				rel_root = rel_root[1:]
+			for filepath in files:
+				output.append(posixpath.join(rel_root, filepath))
+		return output
+