| Conditions | 31 |
| Total Lines | 116 |
| Lines | 38 |
| Ratio | 32.76 % |
| Changes | 5 | ||
| Bugs | 0 | Features | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like ApexParadigmPlugin.__preemptive_digipeat() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | #!/usr/bin/env python |
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| 126 | def __preemptive_digipeat(self, frame, recv_port, recv_port_name): |
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| 127 | # can't digipeat packets if we are in the expended path |
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| 128 | if apex.routing.has_seen(self.port_map, frame): |
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| 129 | return |
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| 130 | |||
| 131 | selected_hop = {} |
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| 132 | node = None |
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| 133 | ssid = 0 |
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| 134 | for hop_index in reversed(range(0, len(frame['path']))): |
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| 135 | hop = frame['path'][hop_index] |
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| 136 | # If this is the last node before a spent node, or a spent node itself, we are done |
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| 137 | if hop[-1] == '*' or frame['path'][hop_index-1][-1] == '*': |
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| 138 | break |
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| 139 | split_hop = hop.split('-') |
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| 140 | node = split_hop[0].upper() |
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| 141 | if len(split_hop) >= 2 and split_hop[1]: |
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| 142 | ssid = int(split_hop[1]) |
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| 143 | else: |
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| 144 | continue |
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| 145 | |||
| 146 | band_path = None |
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| 147 | band_path_net = None |
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| 148 | band_match = self.BAND_PATH_REGEX.match(node) |
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| 149 | if band_match is not None: |
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| 150 | band_path = band_match.group(1) |
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| 151 | band_path_net = band_match.group(2) |
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| 152 | |||
| 153 | if not band_path: |
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| 154 | continue |
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| 155 | |||
| 156 | for port_name in self.port_map.keys(): |
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| 157 | port = self.port_map[port_name] |
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| 158 | if band_path_net and node == port['net']: |
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| 159 | # only when a ssid is present should it be treated preemptively if it is a band path |
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| 160 | if not selected_hop: |
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| 161 | selected_hop['index'] = hop_index |
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| 162 | selected_hop['hop'] = hop |
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| 163 | selected_hop['node'] = node |
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| 164 | selected_hop['ssid'] = ssid |
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| 165 | selected_hop['port_name'] = port_name |
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| 166 | selected_hop['port'] = port |
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| 167 | selected_hop['band_path'] = band_path |
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| 168 | selected_hop['band_path_net'] = band_path_net |
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| 169 | elif ssid > selected_hop['ssid']: |
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| 170 | selected_hop['index'] = hop_index |
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| 171 | selected_hop['hop'] = hop |
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| 172 | selected_hop['node'] = node |
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| 173 | selected_hop['ssid'] = ssid |
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| 174 | selected_hop['port_name'] = port_name |
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| 175 | selected_hop['port'] = port |
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| 176 | selected_hop['band_path'] = band_path |
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| 177 | selected_hop['band_path_net'] = band_path_net |
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| 178 | elif not band_path_net and port['net'].startswith(band_path): |
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| 179 | # only when a ssid is present should it be treated preemptively if it is a band path |
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| 180 | if not selected_hop: |
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| 181 | selected_hop['index'] = hop_index |
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| 182 | selected_hop['hop'] = hop |
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| 183 | selected_hop['node'] = node |
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| 184 | selected_hop['ssid'] = ssid |
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| 185 | selected_hop['port_name'] = port_name |
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| 186 | selected_hop['port'] = port |
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| 187 | selected_hop['band_path'] = band_path |
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| 188 | View Code Duplication | selected_hop['band_path_net'] = band_path_net |
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| 189 | elif ssid > selected_hop['ssid']: |
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| 190 | selected_hop['index'] = hop_index |
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| 191 | selected_hop['hop'] = hop |
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| 192 | selected_hop['node'] = node |
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| 193 | selected_hop['ssid'] = ssid |
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| 194 | selected_hop['port_name'] = port_name |
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| 195 | selected_hop['port'] = port |
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| 196 | selected_hop['band_path'] = band_path |
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| 197 | selected_hop['band_path_net'] = band_path_net |
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| 198 | for hop_index in reversed(range(0, len(frame['path']))): |
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| 199 | hop = frame['path'][hop_index] |
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| 200 | # If this is the last node before a spent node, or a spent node itself, we are done |
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| 201 | if hop[-1] == '*' or frame['path'][hop_index-1][-1] == '*': |
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| 202 | break |
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| 203 | elif selected_hop and selected_hop['index'] <= hop_index: |
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| 204 | break |
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| 205 | |||
| 206 | View Code Duplication | for port_name in self.port_map.keys(): |
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| 207 | port = self.port_map[port_name] |
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| 208 | |||
| 209 | # since the callsign specifically was specified in the path after the band-path the callsign takes |
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| 210 | # precedence |
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| 211 | if port['identifier'] == hop: |
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| 212 | selected_hop['index'] = hop_index |
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| 213 | selected_hop['hop'] = hop |
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| 214 | selected_hop['node'] = node |
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| 215 | selected_hop['ssid'] = ssid |
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| 216 | selected_hop['port_name'] = port_name |
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| 217 | selected_hop['port'] = port |
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| 218 | selected_hop['band_path'] = None |
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| 219 | selected_hop['band_path_net'] = None |
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| 220 | |||
| 221 | if not selected_hop: |
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| 222 | return |
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| 223 | |||
| 224 | # now lets digipeat this packet |
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| 225 | new_path = [] |
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| 226 | for hop_index in range(0, len(frame['path'])): |
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| 227 | hop = frame['path'][hop_index] |
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| 228 | if hop[-1] != '*': |
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| 229 | if hop_index == selected_hop['index']: |
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| 230 | if selected_hop['band_path'] is None: |
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| 231 | new_path += [hop + '*'] |
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| 232 | else: |
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| 233 | new_path += [selected_hop['port']['identifier'] + '*'] + [hop + '*'] |
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| 234 | elif hop_index > selected_hop['index']: |
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| 235 | new_path += [hop] |
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| 236 | else: |
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| 237 | new_path += [hop] |
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| 238 | frame['path'] = new_path |
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| 239 | port['tnc'].write(frame, port['tnc_port']) |
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| 240 | self.aprsis.write(frame) |
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| 241 | return |
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| 242 | |||
| 252 |