def windows_fast_hardlink(src, dest):
from calibre_extensions import winutil
winutil.create_hard_link(dest, src)
ssz, dsz = windows_get_size(src), windows_get_size(dest)
if ssz != dsz:
msg = 'Creating hardlink from %s to %s failed: %%s' % (src, dest)
raise OSError(msg % ('hardlink size: %d not the same as source size: %s' % (dsz, ssz)))
def windows_hardlink(src, dest):
from calibre_extensions import winutil
winutil.create_hard_link(dest, src)
src_size = os.path.getsize(src)
# We open and close dest, to ensure its directory entry is updated
# see http://blogs.msdn.com/b/oldnewthing/archive/2011/12/26/10251026.aspx
for i in range(10):
# If we are on a network filesystem, we have to wait for some indeterminate time, since
# network file systems are the best thing since sliced bread
try:
if windows_get_size(dest) == src_size:
return
except EnvironmentError:
pass
time.sleep(0.3)
sz = windows_get_size(dest)
if sz != src_size:
msg = 'Creating hardlink from %s to %s failed: %%s' % (src, dest)
raise OSError(msg % ('hardlink size: %d not the same as source size' % sz))
def test_winutil(self):
import tempfile
from calibre import strftime
from calibre_extensions import winutil
self.assertEqual(winutil.special_folder_path(winutil.CSIDL_APPDATA), winutil.known_folder_path(winutil.FOLDERID_RoamingAppData))
self.assertEqual(winutil.special_folder_path(winutil.CSIDL_LOCAL_APPDATA), winutil.known_folder_path(winutil.FOLDERID_LocalAppData))
self.assertEqual(winutil.special_folder_path(winutil.CSIDL_FONTS), winutil.known_folder_path(winutil.FOLDERID_Fonts))
self.assertEqual(winutil.special_folder_path(winutil.CSIDL_PROFILE), winutil.known_folder_path(winutil.FOLDERID_Profile))
def au(x, name):
self.assertTrue(
isinstance(x, unicode_type),
'%s() did not return a unicode string, instead returning: %r' % (name, x))
for x in 'username temp_path locale_name'.split():
au(getattr(winutil, x)(), x)
d = winutil.localeconv()
au(d['thousands_sep'], 'localeconv')
au(d['decimal_point'], 'localeconv')
for k, v in iteritems(d):
au(v, k)
os.environ['XXXTEST'] = 'YYY'
self.assertEqual(getenv('XXXTEST'), 'YYY')
del os.environ['XXXTEST']
self.assertIsNone(getenv('XXXTEST'))
for k in os.environ:
v = getenv(k)
if v is not None:
au(v, 'getenv-' + k)
t = time.localtime()
fmt = '%Y%a%b%e%H%M'
for fmt in (fmt, fmt.encode('ascii')):
x = strftime(fmt, t)
au(x, 'strftime')
tdir = tempfile.mkdtemp(dir=winutil.temp_path())
path = os.path.join(tdir, 'test-create-file.txt')
h = winutil.create_file(
path, winutil.GENERIC_READ | winutil.GENERIC_WRITE, 0, winutil.OPEN_ALWAYS, winutil.FILE_ATTRIBUTE_NORMAL)
self.assertRaises(OSError, winutil.delete_file, path)
del h
winutil.delete_file(path)
self.assertRaises(OSError, winutil.delete_file, path)
self.assertRaises(OSError, winutil.create_file,
os.path.join(path, 'cannot'), winutil.GENERIC_READ, 0, winutil.OPEN_ALWAYS, winutil.FILE_ATTRIBUTE_NORMAL)
self.assertTrue(winutil.supports_hardlinks(os.path.abspath(os.getcwd())[0] + ':\\'))
sz = 23
data = os.urandom(sz)
open(path, 'wb').write(data)
h = winutil.Handle(0, winutil.ModuleHandle, 'moo')
r = repr(h)
h2 = winutil.Handle(h.detach(), winutil.ModuleHandle, 'moo')
self.assertEqual(r, repr(h2))
h2.close()
h = winutil.create_file(
path, winutil.GENERIC_READ | winutil.GENERIC_WRITE, 0, winutil.OPEN_ALWAYS, winutil.FILE_ATTRIBUTE_NORMAL)
self.assertEqual(winutil.get_file_size(h), sz)
self.assertRaises(OSError, winutil.set_file_pointer, h, 23, 23)
self.assertEqual(winutil.read_file(h), data)
self.assertEqual(winutil.read_file(h), b'')
winutil.set_file_pointer(h, 3)
self.assertEqual(winutil.read_file(h), data[3:])
self.assertEqual(winutil.nlinks(path), 1)
npath = path + '.2'
winutil.create_hard_link(npath, path)
h.close()
self.assertEqual(open(npath, 'rb').read(), data)
self.assertEqual(winutil.nlinks(path), 2)
winutil.delete_file(path)
self.assertEqual(winutil.nlinks(npath), 1)
winutil.set_file_attributes(npath, winutil.FILE_ATTRIBUTE_READONLY)
self.assertRaises(OSError, winutil.delete_file, npath)
winutil.set_file_attributes(npath, winutil.FILE_ATTRIBUTE_NORMAL)
winutil.delete_file(npath)
self.assertGreater(min(winutil.get_disk_free_space(None)), 0)
open(path, 'wb').close()
open(npath, 'wb').close()
winutil.move_file(path, npath, winutil.MOVEFILE_WRITE_THROUGH | winutil.MOVEFILE_REPLACE_EXISTING)
self.assertFalse(os.path.exists(path))
os.remove(npath)
dpath = tempfile.mkdtemp(dir=os.path.dirname(path))
dh = winutil.create_file(
dpath, winutil.FILE_LIST_DIRECTORY, winutil.FILE_SHARE_READ, winutil.OPEN_EXISTING, winutil.FILE_FLAG_BACKUP_SEMANTICS,
)
from threading import Thread, Event
started = Event()
events = []
def read_changes():
buffer = b'0' * 8192
started.set()
events.extend(winutil.read_directory_changes(
dh, buffer, True,
winutil.FILE_NOTIFY_CHANGE_FILE_NAME |
winutil.FILE_NOTIFY_CHANGE_DIR_NAME |
winutil.FILE_NOTIFY_CHANGE_ATTRIBUTES |
winutil.FILE_NOTIFY_CHANGE_SIZE |
winutil.FILE_NOTIFY_CHANGE_LAST_WRITE |
winutil.FILE_NOTIFY_CHANGE_SECURITY
))
t = Thread(target=read_changes, daemon=True)
t.start()
started.wait(1)
t.join(0.1)
testp = os.path.join(dpath, 'test')
open(testp, 'w').close()
t.join(4)
self.assertTrue(events)
for actions, path in events:
self.assertEqual(os.path.join(dpath, path), testp)
dh.close()
os.remove(testp)
os.rmdir(dpath)
del h
shutil.rmtree(tdir)
m = winutil.create_mutex("test-mutex", False)
self.assertRaises(OSError, winutil.create_mutex, 'test-mutex', False)
m.close()
self.assertEqual(winutil.parse_cmdline('"c:\\test exe.exe" "some arg" 2'), ('c:\\test exe.exe', 'some arg', '2'))
