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#!/usr/bin/env python3
import argparse
import readline
import os
import atexit
import json
import pprint
import asyncio
import logzero
import fs
async def main():
parser = argparse.ArgumentParser()
parser.add_argument('--histfile', default='.torfs_history')
parser.add_argument('--vfs', default='.torfs_vfs')
args = parser.parse_args()
# Configure logger
if 'LOGLEVEL' in os.environ:
logzero.loglevel(os.environ['LOGLEVEL'])
# Configure readline
try:
readline.read_history_file(args.histfile)
except FileNotFoundError:
pass
readline.parse_and_bind('tab: complete')
atexit.register(readline.write_history_file, args.histfile)
# Load saved file system
if os.path.isfile(args.vfs):
with open(args.vfs, 'r') as file_vfs:
vfs = json.load(file_vfs, cls=fs.VFSJsonDecoder)
else:
vfs = fs.VFS()
open_files = dict()
fd_count = 0
# Serve user commands
while True:
try:
command = input('torfs> ')
except EOFError:
break
except KeyboardInterrupt:
print()
continue
tokens = command.split()
program = tokens[0]
try:
if program == 'ls':
if len(tokens) > 2:
print('Invalid arguments')
continue
if len(tokens) == 2:
path = tokens[1]
else:
path = '.'
for name in vfs.list(path):
print(name)
elif program == 'find':
if len(tokens) > 2:
print('Invalid arguments')
continue
if len(tokens) == 2:
path = tokens[1]
else:
path = '.'
for name in vfs.find(path):
print(name)
elif program == 'touch':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
vfs.touch(path)
elif program == 'mkdir':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
vfs.mkdir(path)
elif program == 'rm':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
vfs.remove(path)
elif program == 'rmdir':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
vfs.remove(path, recursive=True)
elif program == 'cp':
if len(tokens) != 3:
print('Invalid arguments')
continue
from_path = tokens[1]
to_path = tokens[2]
await vfs.copy(from_path, to_path)
elif program == 'stat':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
file_stat = vfs.stat(path)
pprint.pprint(file_stat)
elif program == 'open':
if len(tokens) != 2:
print('Invalid arguments')
continue
path = tokens[1]
fp = vfs.open(path)
open_files[fd_count] = fp
print('fd = %d' % fd_count)
fd_count += 1
elif program == 'fd':
if len(tokens) != 1:
print('"fd" command has no arguments')
continue
for fd in open_files.keys():
print(fd)
elif program == 'close':
if len(tokens) != 2:
print('Invalid arguments')
continue
try:
fd = int(tokens[1])
except ValueError:
print('Invalid arguments')
continue
if fd not in open_files:
print('Invalid arguments')
open_files.remove(fd)
elif program == 'read':
if len(tokens) != 4:
print('Invalid arguments')
continue
try:
fd = int(tokens[1])
offset = int(tokens[2])
length = int(tokens[3])
except ValueError:
print('Invalid arguments')
continue
if fd not in open_files:
print('Invalid arguments')
continue
fp = open_files[fd]
buf = await fp.read(offset, length)
print(buf)
elif program == 'write':
if len(tokens) != 4:
print('Invalid arguments')
continue
try:
fd = int(tokens[1])
offset = int(tokens[2])
data = eval(tokens[3])
except ValueError:
print('Invalid arguments')
continue
if isinstance(data, bytes):
print('Invalid arguments')
continue
if fd not in open_files:
print('Invalid arguments')
continue
fp = open_files[fd]
buf = await fp.write(offset, data)
elif program == 'exit':
exit(0)
elif program == 'help':
if len(tokens) != 1:
print('"help" command has no arguments')
continue
print(r'''ls [PATH]
List directory.
find [PATH]
Recursively list files and directories.
touch PATH
Create empty file.
mkdir PATH
Create directory.
rm PATH
Delete file.
rmdir PATH
Recursively delete directory.
cp FROM_PATH TO_PATH
Copy files.
If FROM_PATH or TO_PATH is prefixed with '@', it indicates
the path on host. For example, "cp @from.jpg to.jpg" reads
"from.jpg" from host, and copies to "to.jpg" in TorFS.
stat PATH
Show file information.
open PATH
Open a file in TorFS and allocate a file descriptor.
fd
List open files.
close FD
Close a file descriptor.
read FD OFFSET LENGTH
Read data with LENGTH in size starting from OFFSET on FD.
write FD OFFSET DATA
Write data starting from OFFSET on FD. The DATA is encoded
in Python bytes representation (b'\x00\x01...').
''')
else:
print('Invalid command')
except fs.VFSError as e:
print('Error:', e)
# Save file system state
with open(args.vfs, 'w') as file_vfs:
json.dump(vfs, file_vfs, cls=fs.VFSJsonEncoder)
if __name__ == '__main__':
asyncio.run(main())
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