610 lines
24 KiB
Python
610 lines
24 KiB
Python
#!/usr/bin/env python
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# vim:fileencoding=utf-8
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# License: GPLv3 Copyright: 2021, Kovid Goyal <kovid at kovidgoyal.net>
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import os
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import stat
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from collections import deque
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from enum import auto
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from itertools import count
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from time import monotonic
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from typing import (
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IO, Callable, Deque, Dict, Iterable, Iterator, List, Optional, Sequence,
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Tuple, Union
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)
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from kitty.cli_stub import TransferCLIOptions
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from kitty.fast_data_types import FILE_TRANSFER_CODE, wcswidth
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from kitty.file_transmission import (
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Action, Compression, FileTransmissionCommand, FileType, NameReprEnum,
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TransmissionType, encode_password
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)
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from kitty.typing import KeyEventType
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from kitty.utils import sanitize_control_codes
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from ..tui.handler import Handler
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from ..tui.loop import Loop, debug
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from ..tui.operations import styled, without_line_wrap
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from ..tui.spinners import Spinner
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from ..tui.utils import human_size
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from .utils import (
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IdentityCompressor, ZlibCompressor, abspath, expand_home, home_path,
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random_id, render_progress_in_width, safe_divide,
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should_be_compressed
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)
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debug
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def get_remote_path(local_path: str, remote_base: str) -> str:
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if not remote_base:
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return local_path.replace(os.sep, '/')
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if remote_base.endswith('/'):
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return os.path.join(remote_base, os.path.basename(local_path))
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return remote_base
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class FileState(NameReprEnum):
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waiting_for_start = auto()
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waiting_for_data = auto()
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transmitting = auto()
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finished = auto()
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acknowledged = auto()
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class File:
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def __init__(
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self, local_path: str, expanded_local_path: str, file_id: int, stat_result: os.stat_result,
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remote_base: str, file_type: FileType, ttype: TransmissionType = TransmissionType.simple
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) -> None:
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self.ttype = ttype
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self.state = FileState.waiting_for_start
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self.local_path = local_path
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self.display_name = sanitize_control_codes(local_path)
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self.expanded_local_path = expanded_local_path
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self.permissions = stat.S_IMODE(stat_result.st_mode)
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self.mtime = stat_result.st_mtime_ns
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self.file_size = self.bytes_to_transmit = stat_result.st_size
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self.file_hash = stat_result.st_dev, stat_result.st_ino
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self.remote_path = get_remote_path(self.local_path, remote_base)
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self.remote_path = self.remote_path.replace(os.sep, '/')
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self.file_id = hex(file_id)[2:]
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self.hard_link_target = ''
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self.symbolic_link_target = ''
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self.stat_result = stat_result
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self.file_type = file_type
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self.compression = Compression.zlib if (
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self.file_type is FileType.regular and self.file_size > 4096 and should_be_compressed(self.expanded_local_path)
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) else Compression.none
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self.compression = Compression.zlib
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self.compressor: Union[ZlibCompressor, IdentityCompressor] = ZlibCompressor() if self.compression is Compression.zlib else IdentityCompressor()
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self.remote_final_path = ''
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self.remote_initial_size = -1
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self.err_msg = ''
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self.actual_file: Optional[IO[bytes]] = None
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self.transmitted_bytes = 0
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self.transmit_started_at = self.transmit_ended_at = 0.
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def __repr__(self) -> str:
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return f'File(name={self.display_name}, ft={self.file_type}, state={self.state})'
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def next_chunk(self, sz: int = 1024 * 1024) -> Tuple[bytes, int]:
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if self.file_type is FileType.symlink:
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self.state = FileState.finished
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ans = self.symbolic_link_target.encode('utf-8')
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return ans, len(ans)
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if self.file_type is FileType.link:
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self.state = FileState.finished
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ans = self.hard_link_target.encode('utf-8')
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return ans, len(ans)
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if self.actual_file is None:
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self.actual_file = open(self.expanded_local_path, 'rb')
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chunk = self.actual_file.read(sz)
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uncompressed_sz = len(chunk)
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is_last = not chunk or self.actual_file.tell() >= self.file_size
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cchunk = self.compressor.compress(chunk)
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if is_last and not isinstance(self.compressor, IdentityCompressor):
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cchunk += self.compressor.flush()
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if is_last:
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self.state = FileState.finished
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self.actual_file.close()
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self.actual_file = None
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return cchunk, uncompressed_sz
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def metadata_command(self) -> FileTransmissionCommand:
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return FileTransmissionCommand(
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action=Action.file, compression=self.compression, ftype=self.file_type,
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name=self.remote_path, permissions=self.permissions, mtime=self.mtime,
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file_id=self.file_id,
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)
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def process(cli_opts: TransferCLIOptions, paths: Iterable[str], remote_base: str, counter: Iterator[int]) -> Iterator[File]:
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for x in paths:
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expanded = expand_home(x)
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try:
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s = os.stat(expanded, follow_symlinks=False)
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except OSError as err:
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raise SystemExit(f'Failed to stat {x} with error: {err}') from err
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if stat.S_ISDIR(s.st_mode):
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yield File(x, expanded, next(counter), s, remote_base, FileType.directory)
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new_remote_base = remote_base
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if new_remote_base:
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new_remote_base = new_remote_base.rstrip('/') + '/' + os.path.basename(x) + '/'
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else:
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new_remote_base = x.replace(os.sep, '/').rstrip('/') + '/'
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yield from process(cli_opts, [os.path.join(x, y) for y in os.listdir(expanded)], new_remote_base, counter)
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elif stat.S_ISLNK(s.st_mode):
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yield File(x, expanded, next(counter), s, remote_base, FileType.symlink)
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elif stat.S_ISREG(s.st_mode):
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yield File(x, expanded, next(counter), s, remote_base, FileType.regular)
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def process_mirrored_files(cli_opts: TransferCLIOptions, args: Sequence[str]) -> Iterator[File]:
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paths = [abspath(x) for x in args]
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try:
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common_path = os.path.commonpath(paths)
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except ValueError:
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common_path = ''
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home = home_path().rstrip(os.sep)
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if common_path and common_path.startswith(home + os.sep):
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paths = [os.path.join('~', os.path.relpath(x, home)) for x in paths]
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yield from process(cli_opts, paths, '', count(1))
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def process_normal_files(cli_opts: TransferCLIOptions, args: Sequence[str]) -> Iterator[File]:
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if len(args) < 2:
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raise SystemExit('Must specify at least one local path and one remote path')
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args = list(args)
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remote_base = args.pop().replace(os.sep, '/')
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if len(args) > 1 and not remote_base.endswith('/'):
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remote_base += '/'
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paths = [abspath(x) for x in args]
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yield from process(cli_opts, paths, remote_base, count(1))
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def files_for_send(cli_opts: TransferCLIOptions, args: List[str]) -> Tuple[File, ...]:
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if cli_opts.mode == 'mirror':
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files = list(process_mirrored_files(cli_opts, args))
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else:
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files = list(process_normal_files(cli_opts, args))
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groups: Dict[Tuple[int, int], List[File]] = {}
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# detect hard links
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for f in files:
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groups.setdefault(f.file_hash, []).append(f)
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for group in groups.values():
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if len(group) > 1:
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for lf in group[1:]:
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lf.file_type = FileType.link
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lf.hard_link_target = group[0].file_id
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# detect symlinks to other transferred files
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for f in tuple(files):
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if f.file_type is FileType.symlink:
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try:
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link_dest = os.readlink(f.local_path)
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except OSError:
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files.remove(f)
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continue
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f.symbolic_link_target = f'path:{link_dest}'
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q = link_dest if os.path.isabs(link_dest) else os.path.join(os.path.dirname(f.local_path), link_dest)
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try:
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st = os.stat(q)
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except OSError:
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pass
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else:
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fh = st.st_dev, st.st_ino
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if fh in groups:
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g = tuple(x for x in groups[fh] if os.path.samestat(st, x.stat_result))
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if g:
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t = g[0]
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f.symbolic_link_target = f'fid:{t.file_id}'
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return tuple(files)
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class SendState(NameReprEnum):
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waiting_for_permission = auto()
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permission_granted = auto()
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permission_denied = auto()
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canceled = auto()
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class Transfer:
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def __init__(self, amt: int = 0):
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self.amt = amt
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self.at = monotonic()
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def is_too_old(self, now: float) -> bool:
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return now - self.at > 30
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class ProgressTracker:
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def __init__(self, total_size_of_all_files: int):
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self.total_size_of_all_files = total_size_of_all_files
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self.total_bytes_to_transfer = total_size_of_all_files
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self.active_file: Optional[File] = None
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self.total_transferred = 0
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self.transfers: Deque[Transfer] = deque()
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self.transfered_stats_amt = 0
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self.transfered_stats_interval = 0.
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self.started_at = 0.
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def change_active_file(self, nf: File) -> None:
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now = monotonic()
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self.active_file = nf
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nf.transmit_started_at = now
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def start_transfer(self) -> None:
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self.transfers.append(Transfer())
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self.started_at = monotonic()
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def on_transfer(self, amt: int) -> None:
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if self.active_file is not None:
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self.active_file.transmitted_bytes += amt
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self.total_transferred += amt
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self.transfers.append(Transfer(amt))
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now = self.transfers[-1].at
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while len(self.transfers) > 2 and self.transfers[0].is_too_old(now):
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self.transfers.popleft()
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self.transfered_stats_interval = now - self.transfers[0].at
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self.transfered_stats_amt = sum(t.amt for t in self.transfers)
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class SendManager:
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def __init__(self, request_id: str, files: Tuple[File, ...], pw: Optional[str] = None, file_done: Callable[[File], None] = lambda f: None):
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self.files = files
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self.password = encode_password(request_id, pw) if pw else ''
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self.fid_map = {f.file_id: f for f in self.files}
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self.request_id = request_id
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self.state = SendState.waiting_for_permission
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self.all_acknowledged = False
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self.all_started = False
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self.active_idx: Optional[int] = None
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self.current_chunk_uncompressed_sz: Optional[int] = None
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self.prefix = f'\x1b]{FILE_TRANSFER_CODE};id={self.request_id};'
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self.suffix = '\x1b\\'
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self.progress = ProgressTracker(sum(df.file_size for df in self.files if df.file_size >= 0))
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self.file_done = file_done
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@property
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def active_file(self) -> Optional[File]:
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if self.active_idx is not None:
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ans = self.files[self.active_idx]
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if ans.state is FileState.transmitting:
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return ans
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def activate_next_ready_file(self) -> Optional[File]:
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if self.active_idx is not None:
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paf = self.files[self.active_idx]
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paf.transmit_ended_at = monotonic()
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self.file_done(paf)
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for i, f in enumerate(self.files):
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if f.state is FileState.transmitting:
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self.active_idx = i
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self.update_collective_statuses()
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self.progress.change_active_file(f)
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return f
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self.active_idx = None
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self.update_collective_statuses()
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def update_collective_statuses(self) -> None:
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found_not_started = found_not_done = False
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for f in self.files:
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if f.state is not FileState.acknowledged:
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found_not_done = True
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if f.state is FileState.waiting_for_start:
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found_not_started = True
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if found_not_started and found_not_done:
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break
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self.all_acknowledged = not found_not_done
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self.all_started = not found_not_started
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def start_transfer(self) -> str:
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return FileTransmissionCommand(action=Action.send, password=self.password).serialize()
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def next_chunks(self) -> Iterator[str]:
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if self.active_file is None:
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self.activate_next_ready_file()
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af = self.active_file
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if af is None:
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return
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chunk = b''
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self.current_chunk_uncompressed_sz = 0
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while af.state is not FileState.finished and not chunk:
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chunk, usz = af.next_chunk()
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self.current_chunk_uncompressed_sz += usz
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is_last = af.state is FileState.finished
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mv = memoryview(chunk)
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pos = 0
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limit = len(chunk)
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while pos < limit:
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cc = mv[pos:pos + 4096]
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pos += 4096
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final = is_last and pos >= limit
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yield FileTransmissionCommand(action=Action.end_data if final else Action.data, file_id=af.file_id, data=cc).serialize()
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def send_file_metadata(self) -> Iterator[str]:
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for f in self.files:
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yield f.metadata_command().serialize()
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def on_file_status_update(self, ftc: FileTransmissionCommand) -> None:
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file = self.fid_map.get(ftc.file_id)
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if file is None:
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return
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if ftc.status == 'STARTED':
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file.remote_final_path = ftc.name
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file.remote_initial_size = ftc.size
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if file.file_type is FileType.directory:
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file.state = FileState.finished
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else:
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file.state = FileState.waiting_for_data if file.ttype is TransmissionType.rsync else FileState.transmitting
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else:
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if ftc.name and not file.remote_final_path:
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file.remote_final_path = ftc.name
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file.state = FileState.acknowledged
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if ftc.status != 'OK':
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file.err_msg = ftc.status
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if self.active_idx is not None and file is self.files[self.active_idx]:
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self.active_idx = None
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self.update_collective_statuses()
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def on_file_transfer_response(self, ftc: FileTransmissionCommand) -> None:
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if ftc.action is Action.status:
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if ftc.file_id:
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self.on_file_status_update(ftc)
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else:
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self.state = SendState.permission_granted if ftc.status == 'OK' else SendState.permission_denied
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class Send(Handler):
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use_alternate_screen = False
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def __init__(self, cli_opts: TransferCLIOptions, files: Tuple[File, ...]):
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Handler.__init__(self)
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self.manager = SendManager(random_id(), files, cli_opts.permissions_password, self.on_file_done)
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self.cli_opts = cli_opts
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self.transmit_started = False
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self.file_metadata_sent = False
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self.quit_after_write_code: Optional[int] = None
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self.check_paths_printed = False
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names = tuple(x.display_name for x in self.manager.files)
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self.max_name_length = max(6, max(map(wcswidth, names)))
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self.spinner = Spinner()
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self.progress_drawn = True
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def send_payload(self, payload: str) -> None:
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self.write(self.manager.prefix)
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self.write(payload)
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self.write(self.manager.suffix)
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def on_file_transfer_response(self, ftc: FileTransmissionCommand) -> None:
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if self.quit_after_write_code is not None:
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return
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if ftc.id != self.manager.request_id:
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return
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if ftc.status == 'CANCELED':
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self.quit_loop(1)
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return
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if self.manager.state is SendState.canceled:
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return
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before = self.manager.state
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self.manager.on_file_transfer_response(ftc)
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if before == SendState.waiting_for_permission:
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if self.manager.state == SendState.permission_denied:
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self.cmd.styled('Permission denied for this transfer', fg='red')
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self.print()
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self.quit_loop(1)
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return
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if self.manager.state == SendState.permission_granted:
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self.cmd.styled('Permission granted for this transfer', fg='green')
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self.print()
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self.send_file_metadata()
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self.loop_tick()
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def start_transfer(self) -> None:
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if self.manager.active_file is None:
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self.manager.activate_next_ready_file()
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if self.manager.active_file is not None:
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self.transmit_started = True
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self.manager.progress.start_transfer()
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self.transmit_next_chunk()
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self.draw_progress()
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def print_check_paths(self) -> None:
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if self.check_paths_printed:
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return
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self.check_paths_printed = True
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self.print('The following file transfers will be performed. A red destination means an existing file will be overwritten.')
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for df in self.manager.files:
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self.cmd.styled(df.file_type.short_text, fg=df.file_type.color)
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self.print(end=' ')
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self.print(df.display_name, '→', end=' ')
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self.cmd.styled(df.remote_final_path, fg='red' if df.remote_initial_size > -1 else None)
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self.print()
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self.print(f'Transferring {len(self.manager.files)} files of total size: {human_size(self.manager.progress.total_bytes_to_transfer)}')
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self.print()
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self.print_continue_msg()
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def print_continue_msg(self) -> None:
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self.print(
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'Press', styled('y', fg='green', bold=True, fg_intense=True), 'to continue or',
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styled('n', fg='red', bold=True, fg_intense=True), 'to abort')
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def on_text(self, text: str, in_bracketed_paste: bool = False) -> None:
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if self.quit_after_write_code is not None:
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return
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if self.check_paths_printed and not self.transmit_started:
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if text.lower() == 'y':
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self.start_transfer()
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return
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if text.lower() == 'n':
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self.abort_transfer()
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self.print('Sending cancel request to terminal')
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return
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self.print_continue_msg()
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def on_key(self, key_event: KeyEventType) -> None:
|
|
if self.quit_after_write_code is not None:
|
|
return
|
|
if key_event.matches('esc'):
|
|
if self.check_paths_printed and not self.transmit_started:
|
|
self.abort_transfer()
|
|
self.print('Sending cancel request to terminal')
|
|
else:
|
|
self.on_interrupt()
|
|
|
|
def check_for_transmit_ok(self) -> None:
|
|
if self.manager.state is not SendState.permission_granted:
|
|
return
|
|
if self.cli_opts.confirm_paths:
|
|
if self.manager.all_started:
|
|
self.print_check_paths()
|
|
return
|
|
self.start_transfer()
|
|
|
|
def transmit_next_chunk(self) -> None:
|
|
for chunk in self.manager.next_chunks():
|
|
self.send_payload(chunk)
|
|
else:
|
|
if self.manager.all_acknowledged:
|
|
self.transfer_finished()
|
|
|
|
def transfer_finished(self) -> None:
|
|
self.send_payload(FileTransmissionCommand(action=Action.finish).serialize())
|
|
self.quit_after_write_code = 0
|
|
|
|
def on_writing_finished(self) -> None:
|
|
if self.manager.current_chunk_uncompressed_sz is not None:
|
|
self.manager.progress.on_transfer(self.manager.current_chunk_uncompressed_sz)
|
|
self.manager.current_chunk_uncompressed_sz = None
|
|
if self.quit_after_write_code is not None:
|
|
self.quit_loop(self.quit_after_write_code)
|
|
return
|
|
if self.manager.state is SendState.permission_granted:
|
|
self.loop_tick()
|
|
|
|
def loop_tick(self) -> None:
|
|
if self.manager.state == SendState.waiting_for_permission:
|
|
return
|
|
if self.transmit_started:
|
|
self.transmit_next_chunk()
|
|
self.refresh_progress()
|
|
else:
|
|
self.check_for_transmit_ok()
|
|
|
|
def initialize(self) -> None:
|
|
self.send_payload(self.manager.start_transfer())
|
|
if self.cli_opts.permissions_password:
|
|
# dont wait for permission, not needed with a password and
|
|
# avoids a roundtrip
|
|
self.send_file_metadata()
|
|
self.cmd.set_cursor_visible(False)
|
|
|
|
def finalize(self) -> None:
|
|
self.cmd.set_cursor_visible(True)
|
|
|
|
def send_file_metadata(self) -> None:
|
|
if not self.file_metadata_sent:
|
|
for payload in self.manager.send_file_metadata():
|
|
self.send_payload(payload)
|
|
self.file_metadata_sent = True
|
|
|
|
def on_term(self) -> None:
|
|
if self.quit_after_write_code is not None:
|
|
return
|
|
self.cmd.styled('Terminate requested, cancelling transfer, transferred files are in undefined state', fg='red')
|
|
self.print()
|
|
self.abort_transfer(delay=2)
|
|
|
|
def on_interrupt(self) -> None:
|
|
if self.quit_after_write_code is not None:
|
|
return
|
|
if self.manager.state is SendState.canceled:
|
|
self.print('Waiting for canceled acknowledgement from terminal, will abort in a few seconds if no response received')
|
|
return
|
|
self.cmd.styled('Interrupt requested, cancelling transfer, transferred files are in undefined state', fg='red')
|
|
self.print()
|
|
self.abort_transfer()
|
|
|
|
def abort_transfer(self, delay: float = 5) -> None:
|
|
self.send_payload(FileTransmissionCommand(action=Action.cancel).serialize())
|
|
self.manager.state = SendState.canceled
|
|
self.asyncio_loop.call_later(delay, self.quit_loop, 1)
|
|
|
|
def render_progress(
|
|
self, name: str, spinner_char: str = ' ', bytes_so_far: int = 0, total_bytes: int = 0,
|
|
secs_so_far: float = 0., bytes_per_sec: float = 0., is_complete: bool = False
|
|
) -> None:
|
|
self.write(render_progress_in_width(
|
|
name, width=self.screen_size.cols, max_path_length=self.max_name_length, spinner_char=spinner_char,
|
|
bytes_so_far=bytes_so_far, total_bytes=total_bytes, secs_so_far=secs_so_far,
|
|
bytes_per_sec=bytes_per_sec, is_complete=is_complete
|
|
))
|
|
|
|
def erase_progress(self) -> None:
|
|
if self.progress_drawn:
|
|
self.cmd.move_cursor_by(2, 'up')
|
|
self.write('\r')
|
|
self.cmd.clear_to_end_of_screen()
|
|
self.progress_drawn = False
|
|
|
|
def on_file_done(self, file: File) -> None:
|
|
with without_line_wrap(self.write):
|
|
self.erase_progress()
|
|
self.draw_progress_for_current_file(file, spinner_char=styled('✔', fg='green'), is_complete=True)
|
|
self.print()
|
|
self.draw_progress()
|
|
|
|
def draw_progress(self) -> None:
|
|
with without_line_wrap(self.write):
|
|
is_complete = self.quit_after_write_code is not None
|
|
if is_complete:
|
|
sc = styled('✔', fg='green') if self.quit_after_write_code == 0 else styled('✘', fg='red')
|
|
else:
|
|
sc = self.spinner()
|
|
p = self.manager.progress
|
|
af = self.manager.active_file
|
|
now = monotonic()
|
|
if af is not None:
|
|
self.draw_progress_for_current_file(af, spinner_char=sc)
|
|
self.print()
|
|
self.render_progress(
|
|
'Total', spinner_char=sc,
|
|
bytes_so_far=p.total_transferred, total_bytes=p.total_bytes_to_transfer,
|
|
secs_so_far=now - p.started_at, is_complete=is_complete,
|
|
bytes_per_sec=safe_divide(p.transfered_stats_amt, p.transfered_stats_interval)
|
|
)
|
|
self.print()
|
|
self.asyncio_loop.call_later(self.spinner.interval, self.refresh_progress)
|
|
self.progress_drawn = True
|
|
|
|
def refresh_progress(self) -> None:
|
|
self.erase_progress()
|
|
self.draw_progress()
|
|
|
|
def draw_progress_for_current_file(self, af: File, spinner_char: str = ' ', is_complete: bool = False) -> None:
|
|
p = self.manager.progress
|
|
now = monotonic()
|
|
self.render_progress(
|
|
af.display_name, spinner_char=spinner_char, is_complete=is_complete,
|
|
bytes_so_far=af.transmitted_bytes, total_bytes=af.bytes_to_transmit,
|
|
secs_so_far=(af.transmit_ended_at or now) - af.transmit_started_at,
|
|
bytes_per_sec=safe_divide(p.transfered_stats_amt, p.transfered_stats_interval)
|
|
)
|
|
|
|
|
|
def send_main(cli_opts: TransferCLIOptions, args: List[str]) -> None:
|
|
print('Scanning files…')
|
|
files = files_for_send(cli_opts, args)
|
|
print(f'Found {len(files)} files and directories, requesting transfer permission…')
|
|
loop = Loop()
|
|
handler = Send(cli_opts, files)
|
|
loop.loop(handler)
|
|
raise SystemExit(loop.return_code)
|