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#!/usr/bin/env python
# -*- coding: utf-8 -*-
import sys, os
import curses
import socket
import threading
import time
import shutil
import tempfile
import getpass
scr = None
logfile = None
CHUNK_SIZE = 1048576
def log(s):
print >> logfile, s
logfile.flush()
def logerr(s):
log('ERROR: ' + s)
class MainLoopInterface:
def main_loop(self): raise NotImplementedError()
def should_quit(self): raise NotImplementedError()
class RemoteControlInterface:
def next(self): raise NotImplementedError()
def convert_bytes(bytes):
bytes = float(bytes)
if bytes >= 1099511627776:
terabytes = bytes / 1099511627776
size = '%.2fT' % terabytes
elif bytes >= 1073741824:
gigabytes = bytes / 1073741824
size = '%.2fG' % gigabytes
elif bytes >= 1048576:
megabytes = bytes / 1048576
size = '%.2fM' % megabytes
elif bytes >= 1024:
kilobytes = bytes / 1024
size = '%.2fK' % kilobytes
else:
size = '%.2fb' % bytes
return size
class RemoteControl(RemoteControlInterface, threading.Thread):
def __init__(self):
super(RemoteControl, self).__init__()
self._lines = []
self._lines_lock = threading.Lock()
self.daemon = True
def next(self):
if not self._lines_lock.acquire(False):
return None
else:
line = None
try:
if len(self._lines):
line = self._lines.pop()
finally:
self._lines_lock.release()
return line
def run(self):
sock_path = os.path.join(tempfile.gettempdir(),
'forkcopy-socket_' + getpass.getuser())
sock_server = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
if os.path.exists(sock_path):
os.remove(sock_path)
sock_server.bind(sock_path)
sock_server.listen(1)
while True:
sock, addr = sock_server.accept()
data = sock.recv(4096)
buf = ''
while len(data) != 0:
buf += data
data = sock.recv(4096)
sock.send('OK')
sock.close()
with self._lines_lock:
self._lines.extend(buf.splitlines())
sock_server.close()
logerr('should not be here deverror')
class forkcopy:
## @param main_loop a MainLoopInterface
def __init__(self, main_loop):
self._chunk_size = CHUNK_SIZE
self._size_copied = 0
self._is_active = False
self._main_loop = main_loop
# note I don't not care about free space, code here will raise IOError if
# an error arise.
def copy(self, ifn, ofn):
if os.path.exists(ofn) or os.path.exists(ofn + '.part'):
logerr('file `%s\' or `%s.part\' already exists, skipping' %
(ofn, ofn))
return
self._is_active = True
self._size_copied = 0
try:
dst = os.path.dirname(ofn)
if not os.path.exists(dst):
os.makedirs(dst)
remove_ofn = False
with open(ofn + '.part', 'wb') as target, \
open(ifn, 'rb') as source:
data = source.read(self._chunk_size)
while len(data) != 0:
target.write(data)
self._size_copied += len(data)
self._main_loop.main_loop()
if self._main_loop.should_quit():
remove_ofn = True
break
data = source.read(self._chunk_size)
if remove_ofn:
os.remove(ofn + '.part')
else:
os.rename(ofn + '.part', ofn)
try:
shutil.copystat(ifn, ofn)
#except OSError, why:
except OSError:
# can't copy file access times on Windows and windows fs
#logerr('can\'t copy attributes, %s' % str(why))
pass
finally:
self._is_active = False
def is_active(self): return self._is_active
def copied_size(self) : return self._size_copied
def reset_size(self): self._size_copied = 0
class MainLoop(MainLoopInterface):
def __init__(self):
self._rc = None
self._fc = None
self._quit = False
self._currentbase = '.'
self._filelist = []
self._currentfile = (None, 0, None, None)
self._previousfile = False
self._previousstatus = False
self._currentfilecopiedsize = 0
self._copiedsize = 0
self._previouscopiedsize = 0
self._totalsize = 0
self._speed = 0
self._speed_timer = None
self._speed_timertime = 5
self._speed_lastsize = 0
self._speed_lock = threading.Lock()
self._fc = forkcopy(self)
self._rc = RemoteControl()
self._rc.start()
self._speed_timer = threading.Timer(self._speed_timertime,
self._determine_speed)
self._speed_timer.start()
curses.curs_set(0)
scr.nodelay(1)
scr.addstr(
'Filename :\n' +
'File size (Copied/Total):\n' +
'Current destination:\n' +
'Base destination directory:\n' +
'Copy size (Copied/Total):\n' +
'Current speed:\n' +
'Current progress:\n' +
'Global progress:\n')
scr.refresh()
def should_quit(self): return self._quit
def _determine_speed(self):
self._speed_timer = threading.Timer(self._speed_timertime,
self._determine_speed)
self._speed_timer.start()
with self._speed_lock:
self._speed = (self._copiedsize - self._speed_lastsize) / \
self._speed_timertime
self._speed_lastsize = self._copiedsize
def _manage_copy(self):
if self._fc.is_active():
return
# add new files if available in the list
if len(self._filelist) != 0:
self._currentfile = self._filelist.pop()
ifn, size, ofn, base = self._currentfile
fcsize = self._fc.copied_size()
self._fc.reset_size()
self._copiedsize += fcsize
self._fc.copy(ifn, ofn)
else:
self._currentfile = ('Waiting for new files to arrive',
0, '', self._currentbase)
time.sleep(1) # avoid wasting cpu cycles when waiting for files
def _print_progressbar(self, percent, y):
if percent < 0 or percent > 100: percent = 0
height, width = scr.getmaxyx()
width -= 2 # substract '[]' characters
width += 1 # take whole line (bad sums below...)
if width <= 4: return
scr.addstr(y, 0, '[')
nbsharp = width*percent/100
for i in range(1, nbsharp):
scr.addstr(y, i, '#')
for i in range(1 + nbsharp, width):
scr.addstr(y, i, ' ')
scr.addstr(']\n')
def _normalize_str(self, s, size):
if len(s) <= 5 or size <= 5:
return s
if len(s) >= size:
return '...' + s[len(s)-size-3:]
return s
def _manage_display(self):
screenh, screenw = scr.getmaxyx()
fcsize = self._fc.copied_size()
self._fc.reset_size()
self._currentfilecopiedsize += fcsize
self._copiedsize += fcsize
if (self._currentfile != self._previousfile or
self._copiedsize != self._previouscopiedsize):
if self._currentfile != self._previousfile:
self._currentfilecopiedsize = fcsize
self._previousfile = self._currentfile
self._previouscopiedsize = self._copiedsize
(ifn, size, ofn, base) = self._currentfile
speed = 0
with self._speed_lock:
speed = self._speed
perc = 0
gperc = 0
if size != 0:
perc = self._currentfilecopiedsize * 100 / size
if self._totalsize != 0:
gperc = self._copiedsize * 100 / self._totalsize
scr.addstr(0, 28, self._normalize_str(ifn, screenw - 28) + '\n')
scr.addstr(1, 28, convert_bytes(self._currentfilecopiedsize)
+ '/' + convert_bytes(size) + '\n')
scr.addstr(2, 28, self._normalize_str(ofn, screenw - 28) + '\n')
scr.addstr(3, 28, self._normalize_str(base, screenw - 28) + '\n')
scr.addstr(4, 28, convert_bytes(self._copiedsize) + '/' +
convert_bytes(self._totalsize) + '\n')
scr.addstr(5, 28, convert_bytes(speed) + '/s\n')
scr.addstr(6, 28, str(perc) + '%\n')
scr.addstr(7, 28, str(gperc) + '%\n')
self._print_progressbar(perc, 8)
self._print_progressbar(gperc, 9)
scr.refresh()
def _gettreefiles(self, src, prefix = None):
if src[len(src)-1] == os.sep:
src = src[0:len(src)-1] # avoid basename troubles
names = os.listdir(src)
dstbase = ''
if prefix is None:
dstbase = os.path.join(self._currentbase, os.path.basename(src))
else:
dstbase = os.path.join(prefix, os.path.basename(src))
ret = []
for name in names:
srcname = os.path.join(src, name)
dstname = os.path.join(dstbase, name)
try:
if os.path.isdir(srcname):
ret.extend(self._gettreefiles(srcname, dstname))
else:
size = 0
try:
size = os.path.getsize(srcname)
except os.error:
logerr('`%s\' inaccessible or command error.' %
srcname)
continue
newfile = (srcname, size, dstname, self._currentbase)
ret.append(newfile)
self._totalsize += size
except (IOError, os.error), why:
logerr('`%s\', %s.' % (srcname, str(why)))
except shutil.Error, err:
logerr('`%s\', %s.' % (srcname, str(err.args)))
return ret
def _command_add(self, ifn):
if not os.path.isdir(ifn):
size = 0
ofn = os.path.join(self._currentbase,
os.path.basename(ifn))
try:
size = os.path.getsize(ifn)
except os.error:
logerr('`%s\' inaccessible or command error.' %
ifn)
return
newfile = (ifn, size, ofn, self._currentbase)
log('adding file: ' + str(newfile))
self._filelist.append(newfile)
self._totalsize += size
else:
newfiles = self._gettreefiles(ifn)
self._filelist.extend(newfiles)
log('adding files: ' + str(newfiles))
def _command_iadd(self, arg):
logerr('iadd not implemented')
def _declare_quit(self):
self._quit = True
if self._speed_timer is not None:
self._speed_timer.cancel()
self._speed_timer = None
def main_loop(self):
if self._quit:
return # app is quitting, do not do any operation
item = self._rc.next()
if item != None:
index = item.find(' ')
command = ''
arg = ''
if index != -1:
command = item[0:index]
arg = item[index + 1:]
else:
command = item
log('command: `%s\'\narg: `%s\'' % (command, arg))
if command == 'add':
self._command_add(arg)
elif command == 'iadd': # add as immutable, copy dir structure
self._command_iadd(arg)
elif command == 'quit':
self._declare_quit()
return
else:
logerr('unrecognized command: `%s\' on line `%s\'' %
(command, item))
if not self._rc.is_alive():
self._declare_quit()
return
key = scr.getch()
if key != curses.ERR:
if key == ord('q') or key == ord('Q'):
self._declare_quit()
elif key == ord('p'):
scr.addstr(23, 0, 'Paused : touch the \'p\' key to continue')
scr.refresh()
while True:
key = scr.getch()
if key != curses.ERR and key == ord('p'):
break
else:
time.sleep(1)
scr.addstr(23, 0, ' ')
scr.refresh()
self._manage_copy()
self._manage_display()
def main(stdscr):
global scr
scr = stdscr
main_loop = MainLoop()
while not main_loop.should_quit():
main_loop.main_loop()
if __name__ == '__main__':
# redirecting stderr errors to stderr.txt since it's hard to see inside
# alternative curses screen.
stderr = open(os.path.join(tempfile.gettempdir(),
'forkcopy-stderr_' + getpass.getuser() + '.txt'), 'wb')
sys.stderr.close()
sys.stderr = stderr
with open(os.path.join(tempfile.gettempdir(),
'forkcopy-log_' + getpass.getuser() + '.txt'), 'wb') as logfile:
log('START')
curses.wrapper(main)
log('STOP')
sys.exit(0)
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