def update_request():
"""
处理前端发来的请求更新请求（异步处理）
:return: 更新信息（开始更新，更新状态，更新冷却，错误情况）等
"""
return update.update_sync()
"""
A program to synchronise the files between two directories given as arguments
ASSUMPTION: If a file has been deleted in one directory but exists in the other,
and the modified times are the same then the file is deleted in both directories
Author: Hayden Knowles
"""
dir1 = sys.argv[1]
dir2 = sys.argv[2]
if dir1[-1] != '/':
dir1 += '/'
if dir2[-1] != '/':
dir2 += '/'
if not os.path.exists(dir1) and not os.path.exists(dir2):
print("Error: arguments are not directories")
elif os.path.exists(dir1) or os.path.exists(dir2):
# make directory and update sync files
if not os.path.isdir(dir1):
os.makedirs(dir1)
elif not os.path.isdir(dir2):
os.makedirs(dir2)
# update directory sync files
update_sync(dir1)
update_sync(dir2)
# compare and update directories and sync files
compare(dir1, dir2)
def compare(dir1, dir2):
with open(dir1 + '.sync') as data:
dict1 = json.load(data)
with open(dir2 + '.sync') as data:
dict2 = json.load(data)
files1 = os.listdir(dir1)
files2 = os.listdir(dir2)
for item in files1:
if item in files2 and item != '.sync':
if os.path.isdir(dir1 + item):
compare(dir1 + item + '/', dir2 + item + '/')
else: # a file
if get_hash(dir1 + item) == get_hash(dir2 + item): # file is the same
if dict1[item][0][0] != dict2[item][0][0]: # compare modified time
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 > date2:
os.system("touch -r {} {}".format(dir1 + item, dir2 + item))
else:
os.system("touch -r {} {}".format(dir2 + item, dir1 + item))
recent_date = max(date1, date2)
dict1[item][0][1] = recent_date.strftime('%Y-%m-%d %H:%M:%S %z')
dict2[item][0][1] = recent_date.strftime('%Y-%m-%d %H:%M:%S %z')
else: # file is different
digest1 = get_hash(dir1 + item)
digest2 = get_hash(dir2 + item)
for entry in dict2[item]:
if digest1 in entry: # file has been superseded
shutil.copy(dir2 + item, dir1) # copy more recent file to destination
dict1[item].insert(0, dict2[item][0]) # copy changes to dated sync file
for entry in dict1[item]:
if digest2 in entry:
shutil.copy(dir1 + item, dir2)
dict2[item].insert(0, dict1[item][0])
# files are unique
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 > date2:
shutil.copy(dir1 + item, dir2)
#print("copying {} to {}".format(dir1+item,dir2))
dict2[item].insert(0, dict1[item][0])
else:
shutil.copy(dir2 + item, dir1)
#print("copying this {} to {}".format(dir2+item,dir1))
dict1[item].insert(0, dict2[item][0])
else: # file does not exist in other directory
if item not in dict2 and item != '.sync': # file has not existed in other directory
if os.path.isfile(dir1 + item):
shutil.copy(dir1 + item, dir2) # copy file
dict2[item] = []
dict2[item].append(dict1[item][0])
else:
shutil.copytree(dir1 + item, dir2 + item) # copy directory
update_sync(dir2 + item + '/')
elif item in dict2 and item != '.sync': # file has been deleted in other directory
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 == date2 and dict2[item][0][1] == "deleted":
os.remove(dir1 + item) # delete file
dict1[item][0] = dict2[item][0]
elif date1 > date2:
shutil.copy(dir1 + item, dir2)
dict2[item].insert(0, dict1[item][0])
else:
os.remove(dir1 + item) # delete file
dict1[item][0] = dict2[item][0]
for item in files2:
if item in files1 and item != '.sync':
if os.path.isdir(dir2 + item):
compare(dir1 + item + '/', dir2 + item + '/')
else: # a file
if get_hash(dir1 + item) == get_hash(dir2 + item): # file is the same
if dict1[item][0][1] != dict2[item][0][1]: # compare modified time
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 > date2:
os.system("touch -r {} {}".format(dir1 + item, dir2 + item))
else:
os.system("touch -r {} {}".format(dir2 + item, dir1 + item))
recent_date = max(date1, date2)
dict1[item][0][1] = recent_date.strftime('%Y-%m-%d %H:%M:%S %z')
dict2[item][0][1] = recent_date.strftime('%Y-%m-%d %H:%M:%S %z')
else: # file is different
digest1 = get_hash(dir1 + item)
digest2 = get_hash(dir2 + item)
for entry in dict2[item]:
if digest1 in entry: # file has been superseded
shutil.copy(dir2 + item, dir1) # copy more recent file to destination
dict1[item].insert(0, dict2[item][0]) # copy changes to dated sync file
for entry in dict1[item]:
if digest2 in entry:
shutil.copy(dir1 + item, dir2)
dict2[item].insert(0, dict1[item][0])
# files are unique
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 > date2:
shutil.copy(dir1 + item, dir2)
dict2[item].insert(0, dict1[item][0])
else:
shutil.copy(dir2 + item, dir1)
dict1[item].insert(0, dict2[item][0])
else: # file does not exist in other directory
if item not in dict1 and item != '.sync': # file has not existed in other directory
if os.path.isfile(dir2 + item):
shutil.copy(dir2 + item, dir1) # copy file
dict1[item] = []
dict1[item].append(dict2[item][0])
else:
shutil.copytree(dir2 + item, dir1 + item) # copy directory
update_sync(dir1 + item + '/')
elif item in dict1 and item != '.sync': # file has been deleted in other directory
date1 = datetime.fromtimestamp(time.mktime(time.strptime(dict1[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
date2 = datetime.fromtimestamp(time.mktime(time.strptime(dict2[item][0][0], '%Y-%m-%d %H:%M:%S %z')))
if date1 == date2 and dict1[item][0][1] == "deleted":
os.remove(dir2 + item) # delete file
dict2[item][0] = dict1[item][0]
elif date2 > date1:
shutil.copy(dir2 + item, dir1)
dict1[item].insert(0, dict2[item][0])
else:
os.remove(dir2 + item) # delete file
dict1[item][0] = dict2[item][0]
#update .sync files
sync1 = open(dir1 + '.sync', 'w')
sync2 = open(dir2 + '.sync', 'w')
json.dump(dict1, sync1, indent=4)
json.dump(dict2, sync2, indent=4)
