Package ais :: Module sls_waterlevel
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Source Code for Module ais.sls_waterlevel

  1  #!/usr/bin/env python 
  2   
  3  __version__ = '$Revision: 4791 $'.split()[1] 
  4  __date__ = '$Date: 2007-01-18 $'.split()[1] 
  5  __author__ = 'xmlbinmsg' 
  6   
  7  __doc__=''' 
  8   
  9  Autogenerated python functions to serialize/deserialize binary messages. 
 10   
 11  Generated by: ./aisxmlbinmsg2py.py 
 12   
 13  Need to then wrap these functions with the outer AIS packet and then 
 14  convert the whole binary blob to a NMEA string.  Those functions are 
 15  not currently provided in this file. 
 16   
 17  serialize: python to ais binary 
 18  deserialize: ais binary to python 
 19   
 20  The generated code uses translators.py, binary.py, and aisstring.py 
 21  which should be packaged with the resulting files. 
 22   
 23   
 24  @requires: U{epydoc<http://epydoc.sourceforge.net/>} > 3.0alpha3 
 25  @requires: U{BitVector<http://cheeseshop.python.org/pypi/BitVector>} 
 26   
 27  @author: '''+__author__+''' 
 28  @version: ''' + __version__ +''' 
 29  @var __date__: Date of last svn commit 
 30  @undocumented: __version__ __author__ __doc__ parser 
 31  @status: under development 
 32  @license: Generated code has no license 
 33  ''' 
 34   
 35  import sys 
 36  from decimal import Decimal 
 37  from BitVector import BitVector 
 38   
 39  import binary, aisstring 
 40   
 41  # FIX: check to see if these will be needed 
 42  TrueBV  = BitVector(bitstring="1") 
 43  "Why always rebuild the True bit?  This should speed things up a bunch" 
 44  FalseBV = BitVector(bitstring="0") 
 45  "Why always rebuild the False bit?  This should speed things up a bunch" 
 46   
 47   
48 -def encode(params, validate=False):
49 '''Create a sls_waterlevel binary message payload to pack into an AIS Msg sls_waterlevel. 50 51 Fields in params: 52 - time_month(uint): Time tag of measurement month 1..12 53 - time_day(uint): Time tag of measurement day of the month 1..31 54 - time_hour(uint): Time tag of measurement UTC hours 0..23 55 - time_min(uint): Time tag of measurement minutes 56 - stationid(aisstr6): Character identifier of the station. Usually a number. 57 - pos_longitude(decimal): Location of measurement East West location 58 - pos_latitude(decimal): Location of measurement North South location 59 - type(uint): How to interpret the water level 60 - waterlevel(int): Water level in centimeters 61 - datum(uint): What reference datum applies to the value 62 - reserved(uint): Reserved bits for future use (field automatically set to "0") 63 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing 64 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 65 @rtype: BitVector 66 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8 67 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits. 68 ''' 69 70 bvList = [] 71 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_month']),4)) 72 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_day']),5)) 73 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_hour']),5)) 74 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_min']),6)) 75 if 'stationid' in params: 76 bvList.append(aisstring.encode(params['stationid'],42)) 77 else: 78 bvList.append(aisstring.encode('@@@@@@@',42)) 79 if 'pos_longitude' in params: 80 bvList.append(binary.bvFromSignedInt(int(Decimal(params['pos_longitude'])*Decimal('60000')),25)) 81 else: 82 bvList.append(binary.bvFromSignedInt(10860000,25)) 83 if 'pos_latitude' in params: 84 bvList.append(binary.bvFromSignedInt(int(Decimal(params['pos_latitude'])*Decimal('60000')),24)) 85 else: 86 bvList.append(binary.bvFromSignedInt(5460000,24)) 87 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['type']),1)) 88 if 'waterlevel' in params: 89 bvList.append(binary.bvFromSignedInt(params['waterlevel'],16)) 90 else: 91 bvList.append(binary.bvFromSignedInt(-32768,16)) 92 if 'datum' in params: 93 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['datum']),2)) 94 else: 95 bvList.append(binary.setBitVectorSize(BitVector(intVal=31),2)) 96 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),14)) 97 98 return binary.joinBV(bvList)
99
100 -def decode(bv, validate=False):
101 '''Unpack a sls_waterlevel message 102 103 Fields in params: 104 - time_month(uint): Time tag of measurement month 1..12 105 - time_day(uint): Time tag of measurement day of the month 1..31 106 - time_hour(uint): Time tag of measurement UTC hours 0..23 107 - time_min(uint): Time tag of measurement minutes 108 - stationid(aisstr6): Character identifier of the station. Usually a number. 109 - pos_longitude(decimal): Location of measurement East West location 110 - pos_latitude(decimal): Location of measurement North South location 111 - type(uint): How to interpret the water level 112 - waterlevel(int): Water level in centimeters 113 - datum(uint): What reference datum applies to the value 114 - reserved(uint): Reserved bits for future use (field automatically set to "0") 115 @type bv: BitVector 116 @param bv: Bits defining a message 117 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 118 @rtype: dict 119 @return: params 120 ''' 121 122 #Would be nice to check the bit count here.. 123 #if validate: 124 # assert (len(bv)==FIX: SOME NUMBER) 125 r = {} 126 r['time_month']=int(bv[0:4]) 127 r['time_day']=int(bv[4:9]) 128 r['time_hour']=int(bv[9:14]) 129 r['time_min']=int(bv[14:20]) 130 r['stationid']=aisstring.decode(bv[20:62]) 131 r['pos_longitude']=Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000') 132 r['pos_latitude']=Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000') 133 r['type']=int(bv[111:112]) 134 r['waterlevel']=binary.signedIntFromBV(bv[112:128]) 135 r['datum']=int(bv[128:130]) 136 r['reserved']=0 137 return r
138
139 -def decodetime_month(bv, validate=False):
140 return int(bv[0:4])
141
142 -def decodetime_day(bv, validate=False):
143 return int(bv[4:9])
144
145 -def decodetime_hour(bv, validate=False):
146 return int(bv[9:14])
147
148 -def decodetime_min(bv, validate=False):
149 return int(bv[14:20])
150
151 -def decodestationid(bv, validate=False):
152 return aisstring.decode(bv[20:62])
153
154 -def decodepos_longitude(bv, validate=False):
155 return Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000')
156
157 -def decodepos_latitude(bv, validate=False):
158 return Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000')
159
160 -def decodetype(bv, validate=False):
161 return int(bv[111:112])
162
163 -def decodewaterlevel(bv, validate=False):
164 return binary.signedIntFromBV(bv[112:128])
165
166 -def decodedatum(bv, validate=False):
167 return int(bv[128:130])
168
169 -def decodereserved(bv, validate=False):
170 return 0
171 172
173 -def printHtml(params, out=sys.stdout):
174 out.write("<h3>sls_waterlevel<h3>\n") 175 out.write("<table border=\"1\">\n") 176 out.write("<tr bgcolor=\"orange\">\n") 177 out.write("<th align=\"left\">Field Name</th>\n") 178 out.write("<th align=\"left\">Type</th>\n") 179 out.write("<th align=\"left\">Value</th>\n") 180 out.write("<th align=\"left\">Value in Lookup Table</th>\n") 181 out.write("<th align=\"left\">Units</th>\n") 182 out.write("\n") 183 out.write("<tr>\n") 184 out.write("<td>time_month</td>\n") 185 out.write("<td>uint</td>\n") 186 if 'time_month' in params: 187 out.write(" <td>"+str(params['time_month'])+"</td>\n") 188 out.write(" <td>"+str(params['time_month'])+"</td>\n") 189 out.write("</tr>\n") 190 out.write("\n") 191 out.write("<tr>\n") 192 out.write("<td>time_day</td>\n") 193 out.write("<td>uint</td>\n") 194 if 'time_day' in params: 195 out.write(" <td>"+str(params['time_day'])+"</td>\n") 196 out.write(" <td>"+str(params['time_day'])+"</td>\n") 197 out.write("</tr>\n") 198 out.write("\n") 199 out.write("<tr>\n") 200 out.write("<td>time_hour</td>\n") 201 out.write("<td>uint</td>\n") 202 if 'time_hour' in params: 203 out.write(" <td>"+str(params['time_hour'])+"</td>\n") 204 out.write(" <td>"+str(params['time_hour'])+"</td>\n") 205 out.write("</tr>\n") 206 out.write("\n") 207 out.write("<tr>\n") 208 out.write("<td>time_min</td>\n") 209 out.write("<td>uint</td>\n") 210 if 'time_min' in params: 211 out.write(" <td>"+str(params['time_min'])+"</td>\n") 212 out.write(" <td>"+str(params['time_min'])+"</td>\n") 213 out.write("</tr>\n") 214 out.write("\n") 215 out.write("<tr>\n") 216 out.write("<td>stationid</td>\n") 217 out.write("<td>aisstr6</td>\n") 218 if 'stationid' in params: 219 out.write(" <td>"+str(params['stationid'])+"</td>\n") 220 out.write(" <td>"+str(params['stationid'])+"</td>\n") 221 out.write("</tr>\n") 222 out.write("\n") 223 out.write("<tr>\n") 224 out.write("<td>pos_longitude</td>\n") 225 out.write("<td>decimal</td>\n") 226 if 'pos_longitude' in params: 227 out.write(" <td>"+str(params['pos_longitude'])+"</td>\n") 228 out.write(" <td>"+str(params['pos_longitude'])+"</td>\n") 229 out.write("<td>degrees</td>\n") 230 out.write("</tr>\n") 231 out.write("\n") 232 out.write("<tr>\n") 233 out.write("<td>pos_latitude</td>\n") 234 out.write("<td>decimal</td>\n") 235 if 'pos_latitude' in params: 236 out.write(" <td>"+str(params['pos_latitude'])+"</td>\n") 237 out.write(" <td>"+str(params['pos_latitude'])+"</td>\n") 238 out.write("<td>degrees</td>\n") 239 out.write("</tr>\n") 240 out.write("\n") 241 out.write("<tr>\n") 242 out.write("<td>type</td>\n") 243 out.write("<td>uint</td>\n") 244 if 'type' in params: 245 out.write(" <td>"+str(params['type'])+"</td>\n") 246 if str(params['type']) in typeDecodeLut: 247 out.write("<td>"+typeDecodeLut[str(params['type'])]+"</td>") 248 else: 249 out.write("<td><i>Missing LUT entry</i></td>") 250 out.write("</tr>\n") 251 out.write("\n") 252 out.write("<tr>\n") 253 out.write("<td>waterlevel</td>\n") 254 out.write("<td>int</td>\n") 255 if 'waterlevel' in params: 256 out.write(" <td>"+str(params['waterlevel'])+"</td>\n") 257 out.write(" <td>"+str(params['waterlevel'])+"</td>\n") 258 out.write("<td>cm</td>\n") 259 out.write("</tr>\n") 260 out.write("\n") 261 out.write("<tr>\n") 262 out.write("<td>datum</td>\n") 263 out.write("<td>uint</td>\n") 264 if 'datum' in params: 265 out.write(" <td>"+str(params['datum'])+"</td>\n") 266 if str(params['datum']) in datumDecodeLut: 267 out.write("<td>"+datumDecodeLut[str(params['datum'])]+"</td>") 268 else: 269 out.write("<td><i>Missing LUT entry</i></td>") 270 out.write("</tr>\n") 271 out.write("\n") 272 out.write("<tr>\n") 273 out.write("<td>reserved</td>\n") 274 out.write("<td>uint</td>\n") 275 if 'reserved' in params: 276 out.write(" <td>"+str(params['reserved'])+"</td>\n") 277 out.write(" <td>"+str(params['reserved'])+"</td>\n") 278 out.write("</tr>\n") 279 out.write("</table>\n")
280
281 -def printKml(params, out=sys.stdout):
282 '''KML (Keyhole Markup Language) for Google Earth, but without the header/footer''' 283 out.write("\ <Placemark>\n") 284 out.write("\t <name>"+str(params['stationid'])+"</name>\n") 285 out.write("\t\t<description>\n") 286 import StringIO 287 buf = StringIO.StringIO() 288 printHtml(params,buf) 289 import cgi 290 out.write(cgi.escape(buf.getvalue())) 291 out.write("\t\t</description>\n") 292 out.write("\t\t<styleUrl>#m_ylw-pushpin_copy0</styleUrl>\n") 293 out.write("\t\t<Point>\n") 294 out.write("\t\t\t<coordinates>") 295 out.write(str(params['pos_longitude'])) 296 out.write(',') 297 out.write(str(params['pos_latitude'])) 298 out.write(",0</coordinates>\n") 299 out.write("\t\t</Point>\n") 300 out.write("\t</Placemark>\n")
301
302 -def printFields(params, out=sys.stdout, format='std'):
303 '''Print a reserved message to stdout. 304 305 Fields in params: 306 - time_month(uint): Time tag of measurement month 1..12 307 - time_day(uint): Time tag of measurement day of the month 1..31 308 - time_hour(uint): Time tag of measurement UTC hours 0..23 309 - time_min(uint): Time tag of measurement minutes 310 - stationid(aisstr6): Character identifier of the station. Usually a number. 311 - pos_longitude(decimal): Location of measurement East West location 312 - pos_latitude(decimal): Location of measurement North South location 313 - type(uint): How to interpret the water level 314 - waterlevel(int): Water level in centimeters 315 - datum(uint): What reference datum applies to the value 316 - reserved(uint): Reserved bits for future use (field automatically set to "0") 317 @param params: Dictionary of field names/values. 318 @param out: File like object to write to 319 @rtype: stdout 320 @return: text to out 321 ''' 322 323 if 'std'==format: 324 out.write("reserved:\n") 325 if 'time_month' in params: out.write(" time_month: "+str(params['time_month'])+"\n") 326 if 'time_day' in params: out.write(" time_day: "+str(params['time_day'])+"\n") 327 if 'time_hour' in params: out.write(" time_hour: "+str(params['time_hour'])+"\n") 328 if 'time_min' in params: out.write(" time_min: "+str(params['time_min'])+"\n") 329 if 'stationid' in params: out.write(" stationid: "+str(params['stationid'])+"\n") 330 if 'pos_longitude' in params: out.write(" pos_longitude: "+str(params['pos_longitude'])+"\n") 331 if 'pos_latitude' in params: out.write(" pos_latitude: "+str(params['pos_latitude'])+"\n") 332 if 'type' in params: out.write(" type: "+str(params['type'])+"\n") 333 if 'waterlevel' in params: out.write(" waterlevel: "+str(params['waterlevel'])+"\n") 334 if 'datum' in params: out.write(" datum: "+str(params['datum'])+"\n") 335 if 'reserved' in params: out.write(" reserved: "+str(params['reserved'])+"\n") 336 elif 'html'==format: 337 printHtml(params,out) 338 elif 'kml'==format: 339 printKml(params,out) 340 elif 'kml-full'==format: 341 out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n") 342 out.write("<kml xmlns=\"http://earth.google.com/kml/2.1\">\n") 343 out.write("<Document>\n") 344 out.write(" <name>Position</name>\n") 345 printKml(params,out) 346 out.write("</Document>\n") 347 out.write("</kml>\n") 348 else: 349 print "ERROR: unknown format:",format 350 assert False 351 352 return # Nothing to return
353 354 typeEncodeLut = { 355 'Relative to datum':'0', 356 'Water depth':'1', 357 } #typeEncodeLut 358 359 typeDecodeLut = { 360 '0':'Relative to datum', 361 '1':'Water depth', 362 } # typeEncodeLut 363 364 datumEncodeLut = { 365 'MLLW':'0', 366 'IGLD-85':'1', 367 'Reserved':'2', 368 'Reserved':'3', 369 } #datumEncodeLut 370 371 datumDecodeLut = { 372 '0':'MLLW', 373 '1':'IGLD-85', 374 '2':'Reserved', 375 '3':'Reserved', 376 } # datumEncodeLut 377 378 379 380 ###################################################################### 381 # UNIT TESTING 382 ###################################################################### 383 import unittest
384 -def testParams():
385 '''Return a params file base on the testvalue tags. 386 @rtype: dict 387 @return: params based on testvalue tags 388 ''' 389 params = {} 390 params['time_month'] = 2 391 params['time_day'] = 28 392 params['time_hour'] = 23 393 params['time_min'] = 45 394 params['stationid'] = 'A234567' 395 params['pos_longitude'] = Decimal('-122.16328') 396 params['pos_latitude'] = Decimal('37.42446') 397 params['type'] = 0 398 params['waterlevel'] = -97 399 params['datum'] = 0 400 params['reserved'] = 0 401 402 return params
403
404 -class Testsls_waterlevel(unittest.TestCase):
405 '''Use testvalue tag text from each type to build test case the sls_waterlevel message'''
406 - def testEncodeDecode(self):
407 408 params = testParams() 409 bits = encode(params) 410 r = decode(bits) 411 412 # Check that each parameter came through ok. 413 self.failUnlessEqual(r['time_month'],params['time_month']) 414 self.failUnlessEqual(r['time_day'],params['time_day']) 415 self.failUnlessEqual(r['time_hour'],params['time_hour']) 416 self.failUnlessEqual(r['time_min'],params['time_min']) 417 self.failUnlessEqual(r['stationid'],params['stationid']) 418 self.failUnlessAlmostEqual(r['pos_longitude'],params['pos_longitude'],4) 419 self.failUnlessAlmostEqual(r['pos_latitude'],params['pos_latitude'],4) 420 self.failUnlessEqual(r['type'],params['type']) 421 self.failUnlessEqual(r['waterlevel'],params['waterlevel']) 422 self.failUnlessEqual(r['datum'],params['datum']) 423 self.failUnlessEqual(r['reserved'],params['reserved'])
424
425 -def addMsgOptions(parser):
426 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true', 427 help='decode a "sls_waterlevel" AIS message') 428 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true', 429 help='encode a "sls_waterlevel" AIS message') 430 parser.add_option('--time_month-field', dest='time_monthField',metavar='uint',type='int' 431 ,help='Field parameter value [default: %default]') 432 parser.add_option('--time_day-field', dest='time_dayField',metavar='uint',type='int' 433 ,help='Field parameter value [default: %default]') 434 parser.add_option('--time_hour-field', dest='time_hourField',metavar='uint',type='int' 435 ,help='Field parameter value [default: %default]') 436 parser.add_option('--time_min-field', dest='time_minField',metavar='uint',type='int' 437 ,help='Field parameter value [default: %default]') 438 parser.add_option('--stationid-field', dest='stationidField',default='@@@@@@@',metavar='aisstr6',type='string' 439 ,help='Field parameter value [default: %default]') 440 parser.add_option('--pos_longitude-field', dest='pos_longitudeField',default=Decimal('181'),metavar='decimal',type='string' 441 ,help='Field parameter value [default: %default]') 442 parser.add_option('--pos_latitude-field', dest='pos_latitudeField',default=Decimal('91'),metavar='decimal',type='string' 443 ,help='Field parameter value [default: %default]') 444 parser.add_option('--type-field', dest='typeField',metavar='uint',type='int' 445 ,help='Field parameter value [default: %default]') 446 parser.add_option('--waterlevel-field', dest='waterlevelField',default=-32768,metavar='int',type='int' 447 ,help='Field parameter value [default: %default]') 448 parser.add_option('--datum-field', dest='datumField',default=31,metavar='uint',type='int' 449 ,help='Field parameter value [default: %default]')
450 451 ############################################################ 452 if __name__=='__main__': 453 454 from optparse import OptionParser 455 parser = OptionParser(usage="%prog [options]", 456 version="%prog "+__version__) 457 458 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true', 459 help='run the documentation tests') 460 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true', 461 help='run the unit tests') 462 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true', 463 help='Make the test output verbose') 464 465 # FIX: remove nmea from binary messages. No way to build the whole packet? 466 # FIX: or build the surrounding msg 8 for a broadcast? 467 typeChoices = ('binary','nmeapayload','nmea') # FIX: what about a USCG type message? 468 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType' 469 ,default='nmeapayload' 470 ,help='What kind of string to expect ('+', '.join(typeChoices)+') [default: %default]') 471 472 473 outputChoices = ('std','html','xml' , 'kml','kml-full') 474 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType' 475 ,default='std' 476 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]') 477 478 parser.add_option('-o','--output',dest='outputFileName',default=None, 479 help='Name of the python file to write [default: stdout]') 480 481 addMsgOptions(parser) 482 483 (options,args) = parser.parse_args() 484 success=True 485 486 if options.doctest: 487 import os; print os.path.basename(sys.argv[0]), 'doctests ...', 488 sys.argv= [sys.argv[0]] 489 if options.verbose: sys.argv.append('-v') 490 import doctest 491 numfail,numtests=doctest.testmod() 492 if numfail==0: print 'ok' 493 else: 494 print 'FAILED' 495 success=False 496 497 if not success: sys.exit('Something Failed') 498 del success # Hide success from epydoc 499 500 if options.unittest: 501 sys.argv = [sys.argv[0]] 502 if options.verbose: sys.argv.append('-v') 503 unittest.main() 504 505 outfile = sys.stdout 506 if None!=options.outputFileName: 507 outfile = file(options.outputFileName,'w') 508 509 510 if options.doEncode: 511 # First make sure all non required options are specified 512 if None==options.time_monthField: parser.error("missing value for time_monthField") 513 if None==options.time_dayField: parser.error("missing value for time_dayField") 514 if None==options.time_hourField: parser.error("missing value for time_hourField") 515 if None==options.time_minField: parser.error("missing value for time_minField") 516 if None==options.stationidField: parser.error("missing value for stationidField") 517 if None==options.pos_longitudeField: parser.error("missing value for pos_longitudeField") 518 if None==options.pos_latitudeField: parser.error("missing value for pos_latitudeField") 519 if None==options.typeField: parser.error("missing value for typeField") 520 if None==options.waterlevelField: parser.error("missing value for waterlevelField") 521 if None==options.datumField: parser.error("missing value for datumField") 522 msgDict={ 523 'time_month': options.time_monthField, 524 'time_day': options.time_dayField, 525 'time_hour': options.time_hourField, 526 'time_min': options.time_minField, 527 'stationid': options.stationidField, 528 'pos_longitude': options.pos_longitudeField, 529 'pos_latitude': options.pos_latitudeField, 530 'type': options.typeField, 531 'waterlevel': options.waterlevelField, 532 'datum': options.datumField, 533 'reserved': '0', 534 } 535 536 bits = encode(msgDict) 537 if 'binary'==options.ioType: print str(bits) 538 elif 'nmeapayload'==options.ioType: 539 # FIX: figure out if this might be necessary at compile time 540 print "bitLen",len(bits) 541 bitLen=len(bits) 542 if bitLen%6!=0: 543 bits = bits + BitVector(size=(6 - (bitLen%6))) # Pad out to multiple of 6 544 print "result:",binary.bitvectoais6(bits)[0] 545 546 547 # FIX: Do not emit this option for the binary message payloads. Does not make sense. 548 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability") 549 else: sys.exit('ERROR: unknown ioType. Help!') 550 551 if options.doDecode: 552 for msg in args: 553 bv = None 554 if 'binary' == options.ioType: bv = BitVector(bitstring=msg) 555 elif 'nmeapayload'== options.ioType: bv = binary.ais6tobitvec(msg) 556 elif 'nmea' == options.ioType: bv = binary.ais6tobitvec(msg.split(',')[5]) 557 else: sys.exit('ERROR: unknown ioType. Help!') 558 559 printFields(decode(bv),out=outfile,format=options.outputType) 560