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|
try:
from asyncio import get_running_loop
except ImportError: # pragma: no cover
from asyncio import get_event_loop as get_running_loop # Python 3.6 compatibility
import struct
import os
from ppadb.protocol import Protocol
from ppadb.sync.stats import S_IFREG
from ppadb.utils.logger import AdbLogging
import aiofiles
logger = AdbLogging.get_logger(__name__)
def _get_src_info(src):
exists = os.path.exists(src)
if not exists:
return exists, None, None
timestamp = os.stat(src).st_mtime
total_size = os.path.getsize(src)
return exists, timestamp, total_size
class SyncAsync:
DATA_MAX_LENGTH = 65536
def __init__(self, connection):
self.connection = connection
async def push(self, src, dest, mode, progress=None):
"""Push from local path |src| to |dest| on device.
:param progress: callback, called with (filename, total_size, sent_size)
"""
exists, timestamp, total_size = await get_running_loop().run_in_executor(None, _get_src_info, src)
if not exists:
raise FileNotFoundError("Can't find the source file {}".format(src))
sent_size = 0
# SEND
mode = mode | S_IFREG
args = "{dest},{mode}".format(dest=dest, mode=mode)
await self._send_str(Protocol.SEND, args)
# DATA
async with aiofiles.open(src, 'rb') as stream:
while True:
chunk = await stream.read(self.DATA_MAX_LENGTH)
if not chunk:
break
sent_size += len(chunk)
await self._send_length(Protocol.DATA, len(chunk))
await self.connection.write(chunk)
if progress is not None:
progress(src, total_size, sent_size)
# DONE
await self._send_length(Protocol.DONE, timestamp)
await self.connection._check_status()
async def pull(self, src, dest):
# RECV
await self._send_str(Protocol.RECV, src)
# DATA
async with aiofiles.open(dest, 'wb') as stream:
while True:
flag = (await self.connection.read(4)).decode('utf-8')
if flag == Protocol.DATA:
data = await self._read_data()
await stream.write(data)
continue
if flag == Protocol.DONE:
await self.connection.read(4)
return
if flag == Protocol.FAIL:
return (await self._read_data()).decode('utf-8')
@staticmethod
def _integer(little_endian):
return struct.unpack("<I", little_endian)
@staticmethod
def _little_endian(n):
return struct.pack('<I', n)
async def _read_data(self):
length = self._integer(await self.connection.read(4))[0]
data = bytearray()
while len(data) < length:
data += await self.connection.read(length - len(data))
return data
async def _send_length(self, cmd, length):
le_len = self._little_endian(length)
data = cmd.encode() + le_len
logger.debug("Send length: {}".format(data))
await self.connection.write(data)
async def _send_str(self, cmd, args):
"""
Format:
{Command}{args length(little endian)}{str}
Length:
{4}{4}{str length}
"""
logger.debug("{} {}".format(cmd, args))
args = args.encode('utf-8')
le_args_len = self._little_endian(len(args))
data = cmd.encode() + le_args_len + args
logger.debug("Send string: {}".format(data))
await self.connection.write(data)
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