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Modification of the method "get_attendances" #138

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Modification of the method "get_attendances" #138

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18 changes: 16 additions & 2 deletions zk/base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1574,10 +1574,11 @@ def read_with_buffer(self, command, fct=0 ,ext=0):
if self.verbose: print ("_read w/chunk %i bytes" % start)
return b''.join(data), start

def get_attendance(self):
def get_attendance(self, last_records=0):
"""
return attendance record


:param last_records: Indicates the number of registers to obtain, located in the last memory spaces. If is value is zero, filtering is not applied.
:return: List of Attendance object
"""
self.read_sizes()
Expand All @@ -1593,8 +1594,17 @@ def get_attendance(self):
total_size = unpack("I", attendance_data[:4])[0]
record_size = total_size/self.records
if self.verbose: print ("record_size is ", record_size)

start_pos = 0
if(last_records > 0 and last_records < self.records):
skip_records = self.records - last_records
start_pos += skip_records

attendance_data = attendance_data[4:]

if record_size == 8:
if(start_pos > 0):
attendance_data = attendance_data[(8 * start_pos):]
while len(attendance_data) >= 8:
uid, status, timestamp, punch = unpack('HB4sB', attendance_data.ljust(8, b'\x00')[:8])
if self.verbose: print (codecs.encode(attendance_data[:8], 'hex'))
Expand All @@ -1608,6 +1618,8 @@ def get_attendance(self):
attendance = Attendance(user_id, timestamp, status, punch, uid)
attendances.append(attendance)
elif record_size == 16:
if(start_pos > 0):
attendance_data = attendance_data[(16 * start_pos):]
while len(attendance_data) >= 16:
user_id, timestamp, status, punch, reserved, workcode = unpack('<I4sBB2sI', attendance_data.ljust(16, b'\x00')[:16])
user_id = str(user_id)
Expand All @@ -1629,6 +1641,8 @@ def get_attendance(self):
attendance = Attendance(user_id, timestamp, status, punch, uid)
attendances.append(attendance)
else:
if(start_pos > 0):
attendance_data = attendance_data[(40 * start_pos):]
while len(attendance_data) >= 40:
uid, user_id, status, timestamp, punch, space = unpack('<H24sB4sB8s', attendance_data.ljust(40, b'\x00')[:40])
if self.verbose: print (codecs.encode(attendance_data[:40], 'hex'))
Expand Down