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# vfs.py
class VirtualFileSystem:
def __init__(self):
self.fs = {"/": {}}
def _get_path(self, path):
parts = path.strip("/").split("/")
node = self.fs["/"]
for part in parts:
if part == "":
continue
if part not in node:
return None
node = node[part]
return node
def list_files(self, path="."):
if path == ".":
path = "/"
node = self._get_path(path)
if node is None or not isinstance(node, dict):
return "Path not found or not a directory."
return list(node.keys())
def create_file(self, file_path, content):
parts = file_path.strip("/").split("/")
filename = parts.pop()
if not filename:
return "Invalid file path."
dir_path = "/" + "/".join(parts)
node = self._get_path(dir_path)
if node is None or not isinstance(node, dict):
# For simplicity, let's automatically create the directory if it doesn't exist.
node = self.fs["/"]
for part in parts:
if part == "":
continue
if part not in node:
node[part] = {}
node = node[part]
node[filename] = content
return f"File '{file_path}' created successfully."
def read_file(self, file_path):
node = self._get_path(file_path)
if node is None or isinstance(node, dict):
return "File not found or is a directory."
return node
# For a single, shared instance of the VFS
vfs_instance = VirtualFileSystem()
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