263 lines
10 KiB
Python
263 lines
10 KiB
Python
#standard libraries
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import struct
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import string
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import re
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import pprint
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#local libraries
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import message_template
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from pyogp.lib.base.data import msg_tmpl
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from pyogp.lib.base.message_types import MsgFrequency, MsgTrust, \
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MsgEncoding, MsgDeprecation, MsgBlockType, MsgType
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class MessageTemplateParser():
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def __init__(self, template_file):
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if template_file == None:
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raise Exception('Template file cannot be None')
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self.template_file = template_file
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self.message_templates = []
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self.version = ''
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self.count = 0
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self.__parse_template_file()
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def __add_template(self, new_template):
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self.count += 1
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#self.message_templates[new_template.get_name()] = new_template
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self.message_templates.append(new_template)
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def __parse_template_file(self):
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count = 0
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self.template_file.seek(0)
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lines = self.template_file
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#results = re.match("^\t([^\t{}]+.+)",line) #gets packet headers
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#results = re.match("^\t\t([^{}]+.+)",line) #gets packet blocks
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#results = re.match("^\t\t([{}]+.+)",line) #gets block data
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current_template = None
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current_block = None
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#we have to go through all the packets and parse them
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while(True):
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try:
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line = lines.next()
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#print line
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#raw_input()
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except StopIteration:
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break
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if self.version == '':
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version_test = re.match("version.(.+)",line) #gets packet headers
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if version_test != None:
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parts = version_test.group(1)
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parts = parts.split()
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self.version = float(parts[0])
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#get packet header, starting a new packet
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packet_header = re.match("^\t([^\t{}]+.+)",line) #gets packet headers
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if packet_header != None:
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parts = packet_header.group(1)
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parts = parts.split()
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current_template = message_template.MessageTemplate(parts[0])
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frequency = None
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if parts[1] == 'Low':
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frequency = MsgFrequency.LOW_FREQUENCY_MESSAGE
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elif parts[1] == 'Medium':
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frequency = MsgFrequency.MEDIUM_FREQUENCY_MESSAGE
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elif parts[1] == 'High':
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frequency = MsgFrequency.HIGH_FREQUENCY_MESSAGE
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elif parts[1] == 'Fixed':
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frequency = MsgFrequency.FIXED_FREQUENCY_MESSAGE
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current_template.frequency = frequency
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msg_num = string.atoi(parts[2],0)
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if frequency == MsgFrequency.FIXED_FREQUENCY_MESSAGE:
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#have to do this because Fixed messages are stored as a long in the template
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binTemp = struct.pack('>L', string.atol(parts[2],0))
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msg_num_hex = binTemp
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msg_num = struct.unpack('>h','\x00' + binTemp[3])[0]
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elif frequency == MsgFrequency.LOW_FREQUENCY_MESSAGE:
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msg_num_hex = struct.pack('>BBh',0xff,0xff, msg_num)
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elif frequency == MsgFrequency.MEDIUM_FREQUENCY_MESSAGE:
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msg_num_hex = struct.pack('>BB',0xff, msg_num)
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elif frequency == MsgFrequency.HIGH_FREQUENCY_MESSAGE:
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msg_num_hex = struct.pack('>B', msg_num)
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current_template.msg_num = msg_num
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current_template.msg_num_hex = msg_num_hex
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msg_trust = None
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if parts[3] == 'Trusted':
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msg_trust = MsgTrust.LL_TRUSTED
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elif parts[3] == 'NotTrusted':
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msg_trust = MsgTrust.LL_NOTRUST
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current_template.msg_trust = msg_trust
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msg_encoding = None
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if parts[4] == 'Unencoded':
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msg_encoding = MsgEncoding.LL_UNENCODED
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elif parts[4] == 'Zerocoded':
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msg_encoding = MsgEncoding.LL_ZEROCODED
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current_template.msg_encoding = msg_encoding
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msg_dep = None
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if len(parts) > 5:
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if parts[5] == 'Deprecated':
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msg_dep = MsgDeprecation.LL_DEPRECATED
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elif parts[5] == 'UDPDeprecated':
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msg_dep = MsgDeprecation.LL_UDPDEPRECATED
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elif parts[5] == 'NotDeprecated':
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msg_dep = MsgDeprecation.LL_NOTDEPRECATED
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else:
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msg_dep = MsgDeprecation.LL_NOTDEPRECATED
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current_template.msg_deprecation = msg_dep
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self.__add_template(current_template)
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block_header = re.match("^\t\t([^{}]+.+)",line) #gets packet block header
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if block_header != None:
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parts = block_header.group(1)
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parts = parts.split()
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current_block = message_template.MessageTemplateBlock(parts[0])
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block_type = None
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block_num = 0
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if parts[1] == 'Single':
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block_type = MsgBlockType.MBT_SINGLE
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elif parts[1] == 'Multiple':
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block_type = MsgBlockType.MBT_MULTIPLE
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block_num = int(parts[2])
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elif parts[1] == 'Variable':
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block_type = MsgBlockType.MBT_VARIABLE
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current_block.type = block_type
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current_block.block_number = block_num
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current_template.add_block(current_block)
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block_data = re.match("^\t\t([{}]+.+)",line) #gets block data
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if block_data != None:
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parts = block_data.group(1)
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parts = parts.split()
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parts.remove('{')
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parts.remove('}')
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type_string = parts[1]
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var_type = None
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var_size = -1
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if type_string == 'U8':
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var_type = MsgType.MVT_U8
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var_size = 1
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elif type_string == 'U16':
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var_type = MsgType.MVT_U16
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var_size = 2
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elif type_string == 'U32':
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var_type = MsgType.MVT_U32
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var_size = 4
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elif type_string == 'U64':
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var_type = MsgType.MVT_U64
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var_size = 8
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elif type_string == 'S8':
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var_type = MsgType.MVT_S8
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var_size = 1
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elif type_string == 'S16':
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var_type = MsgType.MVT_S16
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var_size = 2
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elif type_string == 'S32':
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var_type = MsgType.MVT_S32
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var_size = 4
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elif type_string == 'S64':
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var_type = MsgType.MVT_S64
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var_size = 8
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elif type_string == 'F32':
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var_type = MsgType.MVT_F32
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var_size = 4
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elif type_string == 'F64':
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var_type = MsgType.MVT_F64
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var_size = 8
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elif type_string == 'LLVector3':
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var_type = MsgType.MVT_LLVector3
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var_size = 12
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elif type_string == 'LLVector3d':
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var_type = MsgType.MVT_LLVector3d
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var_size = 24
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elif type_string == 'LLVector4':
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var_type = MsgType.MVT_LLVector4
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var_size = 16
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elif type_string == 'LLQuaternion':
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var_type = MsgType.MVT_LLQuaternion
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var_size = 12
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elif type_string == 'LLUUID':
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var_type = MsgType.MVT_LLUUID
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var_size = 16
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elif type_string == 'BOOL':
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var_type = MsgType.MVT_BOOL
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var_size = 1
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elif type_string == 'IPADDR':
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var_type = MsgType.MVT_IP_ADDR
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var_size = 4
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elif type_string == 'IPPORT':
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var_type = MsgType.MVT_IP_PORT
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var_size = 2
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elif type_string == 'Fixed' or type_string == 'Variable':
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if type_string == 'Fixed':
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var_type = MsgType.MVT_FIXED
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elif type_string == 'Variable':
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var_type = MsgType.MVT_VARIABLE
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var_size = int(parts[2])
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if var_size <= 0:
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raise Exception('Bad variable size')
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current_var = message_template.MessageTemplateVariable(parts[0], var_type, var_size)
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current_block.add_variable(current_var)
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self.template_file.seek(0)
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def print_packet_list(packet_list):
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for packet in packet_list:
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print '======================================'
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print packet.get_name() + ' ' + packet.get_frequency() + ' ' + \
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str(packet.get_message_number()) + ' ' + str(packet.get_message_hex_num()) + \
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' ' + packet.get_message_trust() + ' ' + \
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packet.get_message_encoding() + ' ' + packet.get_deprecation()
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for block in packet.get_blocks():
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print '\t' + block.get_name() + ' ' + block.get_block_type() + ' ' + \
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str(block.get_block_number())
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for variable in block.get_variables():
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sz = len(variable.get_name())
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print '\t\t' + variable.get_name() + variable.get_type().rjust(30 - sz)
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def get_all_types(packet_list):
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type_set = set([])
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for packet in packet_list:
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for block in packet.get_blocks():
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for variable in block.get_variables():
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type_set.add(variable.get_type())
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type_list = list(type_set)
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type_list.sort()
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return type_list
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def main():
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parser = MessageTemplateParser()
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parser.parse_template_file(msg_tmpl)
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templates = parser.get_template_list()
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print_packet_list(templates)
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p_typelist = get_all_types(templates)
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pprint.pprint(p_typelist)
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return
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if __name__ == "__main__":
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main()
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