1
2
3 __version__ = '$Revision: 4791 $'.split()[1]
4 __date__ = '$Date: 2007-12-04 $'.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 @todo: FIX: put in a description of the message here with fields and types.
34 '''
35
36 import sys
37 from decimal import Decimal
38 from BitVector import BitVector
39
40 import binary, aisstring
41
42
43 TrueBV = BitVector(bitstring="1")
44 "Why always rebuild the True bit? This should speed things up a bunch"
45 FalseBV = BitVector(bitstring="0")
46 "Why always rebuild the False bit? This should speed things up a bunch"
47
48
49 fieldList = (
50 'MessageID',
51 'RepeatIndicator',
52 'UserID',
53 'NavigationStatus',
54 'ROT',
55 'SOG',
56 'PositionAccuracy',
57 'longitude',
58 'latitude',
59 'COG',
60 'TrueHeading',
61 'TimeStamp',
62 'RegionalReserved',
63 'Spare',
64 'RAIM',
65 'state_syncstate',
66 'state_slottimeout',
67 'state_slotoffset',
68 )
69
70 fieldListPostgres = (
71 'MessageID',
72 'RepeatIndicator',
73 'UserID',
74 'NavigationStatus',
75 'ROT',
76 'SOG',
77 'PositionAccuracy',
78 'Position',
79 'COG',
80 'TrueHeading',
81 'TimeStamp',
82 'RegionalReserved',
83 'Spare',
84 'RAIM',
85 'state_syncstate',
86 'state_slottimeout',
87 'state_slotoffset',
88 )
89
90 toPgFields = {
91 'longitude':'Position',
92 'latitude':'Position',
93 }
94 '''
95 Go to the Postgis field names from the straight field name
96 '''
97
98 fromPgFields = {
99 'Position':('longitude','latitude',),
100 }
101 '''
102 Go from the Postgis field names to the straight field name
103 '''
104
105 pgTypes = {
106 'Position':'POINT',
107 }
108 '''
109 Lookup table for each postgis field name to get its type.
110 '''
111
112 -def encode(params, validate=False):
113 '''Create a position binary message payload to pack into an AIS Msg position.
114
115 Fields in params:
116 - MessageID(uint): AIS message number. Must be 1 (field automatically set to "3")
117 - RepeatIndicator(uint): Indicated how many times a message has been repeated
118 - UserID(uint): Unique ship identification number (MMSI)
119 - NavigationStatus(uint): What is the vessel doing
120 - ROT(int): RateOfTurn
121 - SOG(udecimal): Speed over ground
122 - PositionAccuracy(uint): Accuracy of positioning fixes
123 - longitude(decimal): Location of the vessel East West location
124 - latitude(decimal): Location of the vessel North South location
125 - COG(udecimal): Course over ground
126 - TrueHeading(uint): True heading (relative to true North)
127 - TimeStamp(uint): UTC second when the report was generated
128 - RegionalReserved(uint): Reserved for definition by a regional authority. (field automatically set to "0")
129 - Spare(uint): Not used. Should be set to zero. (field automatically set to "0")
130 - RAIM(bool): Receiver autonomous integrity monitoring flag
131 - state_syncstate(uint): Communications State - SOTDMA Sycronization state
132 - state_slottimeout(uint): Communications State - SOTDMA Frames remaining until a new slot is selected
133 - state_slotoffset(uint): Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
134 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing
135 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
136 @rtype: BitVector
137 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8
138 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits.
139 '''
140
141 bvList = []
142 bvList.append(binary.setBitVectorSize(BitVector(intVal=3),6))
143 if 'RepeatIndicator' in params:
144 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['RepeatIndicator']),2))
145 else:
146 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),2))
147 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['UserID']),30))
148 if 'NavigationStatus' in params:
149 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['NavigationStatus']),4))
150 else:
151 bvList.append(binary.setBitVectorSize(BitVector(intVal=15),4))
152 if 'ROT' in params:
153 bvList.append(binary.bvFromSignedInt(params['ROT'],8))
154 else:
155 bvList.append(binary.bvFromSignedInt(-128,8))
156 if 'SOG' in params:
157 bvList.append(binary.setBitVectorSize(BitVector(intVal=int((Decimal(params['SOG'])*Decimal('10')))),10))
158 else:
159 bvList.append(binary.setBitVectorSize(BitVector(intVal=int(1023)),10))
160 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['PositionAccuracy']),1))
161 if 'longitude' in params:
162 bvList.append(binary.bvFromSignedInt(int(Decimal(params['longitude'])*Decimal('600000')),28))
163 else:
164 bvList.append(binary.bvFromSignedInt(108600000,28))
165 if 'latitude' in params:
166 bvList.append(binary.bvFromSignedInt(int(Decimal(params['latitude'])*Decimal('600000')),27))
167 else:
168 bvList.append(binary.bvFromSignedInt(54600000,27))
169 if 'COG' in params:
170 bvList.append(binary.setBitVectorSize(BitVector(intVal=int((Decimal(params['COG'])*Decimal('10')))),12))
171 else:
172 bvList.append(binary.setBitVectorSize(BitVector(intVal=int(3600)),12))
173 if 'TrueHeading' in params:
174 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['TrueHeading']),9))
175 else:
176 bvList.append(binary.setBitVectorSize(BitVector(intVal=511),9))
177 if 'TimeStamp' in params:
178 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['TimeStamp']),6))
179 else:
180 bvList.append(binary.setBitVectorSize(BitVector(intVal=60),6))
181 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),4))
182 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),1))
183 if params["RAIM"]: bvList.append(TrueBV)
184 else: bvList.append(FalseBV)
185 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['state_syncstate']),2))
186 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['state_slottimeout']),3))
187 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['state_slotoffset']),14))
188
189 return binary.joinBV(bvList)
190
191 -def decode(bv, validate=False):
192 '''Unpack a position message
193
194 Fields in params:
195 - MessageID(uint): AIS message number. Must be 1 (field automatically set to "3")
196 - RepeatIndicator(uint): Indicated how many times a message has been repeated
197 - UserID(uint): Unique ship identification number (MMSI)
198 - NavigationStatus(uint): What is the vessel doing
199 - ROT(int): RateOfTurn
200 - SOG(udecimal): Speed over ground
201 - PositionAccuracy(uint): Accuracy of positioning fixes
202 - longitude(decimal): Location of the vessel East West location
203 - latitude(decimal): Location of the vessel North South location
204 - COG(udecimal): Course over ground
205 - TrueHeading(uint): True heading (relative to true North)
206 - TimeStamp(uint): UTC second when the report was generated
207 - RegionalReserved(uint): Reserved for definition by a regional authority. (field automatically set to "0")
208 - Spare(uint): Not used. Should be set to zero. (field automatically set to "0")
209 - RAIM(bool): Receiver autonomous integrity monitoring flag
210 - state_syncstate(uint): Communications State - SOTDMA Sycronization state
211 - state_slottimeout(uint): Communications State - SOTDMA Frames remaining until a new slot is selected
212 - state_slotoffset(uint): Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
213 @type bv: BitVector
214 @param bv: Bits defining a message
215 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
216 @rtype: dict
217 @return: params
218 '''
219
220
221
222
223 r = {}
224 r['MessageID']=3
225 r['RepeatIndicator']=int(bv[6:8])
226 r['UserID']=int(bv[8:38])
227 r['NavigationStatus']=int(bv[38:42])
228 r['ROT']=binary.signedIntFromBV(bv[42:50])
229 r['SOG']=Decimal(int(bv[50:60]))/Decimal('10')
230 r['PositionAccuracy']=int(bv[60:61])
231 r['longitude']=Decimal(binary.signedIntFromBV(bv[61:89]))/Decimal('600000')
232 r['latitude']=Decimal(binary.signedIntFromBV(bv[89:116]))/Decimal('600000')
233 r['COG']=Decimal(int(bv[116:128]))/Decimal('10')
234 r['TrueHeading']=int(bv[128:137])
235 r['TimeStamp']=int(bv[137:143])
236 r['RegionalReserved']=0
237 r['Spare']=0
238 r['RAIM']=bool(int(bv[148:149]))
239 r['state_syncstate']=int(bv[149:151])
240 r['state_slottimeout']=int(bv[151:154])
241 r['state_slotoffset']=int(bv[154:168])
242 return r
243
246
249
252
254 return int(bv[38:42])
255
258
260 return Decimal(int(bv[50:60]))/Decimal('10')
261
263 return int(bv[60:61])
264
267
270
272 return Decimal(int(bv[116:128]))/Decimal('10')
273
275 return int(bv[128:137])
276
278 return int(bv[137:143])
279
282
285
287 return bool(int(bv[148:149]))
288
290 return int(bv[149:151])
291
293 return int(bv[151:154])
294
296 return int(bv[154:168])
297
298
300 out.write("<h3>position</h3>\n")
301 out.write("<table border=\"1\">\n")
302 out.write("<tr bgcolor=\"orange\">\n")
303 out.write("<th align=\"left\">Field Name</th>\n")
304 out.write("<th align=\"left\">Type</th>\n")
305 out.write("<th align=\"left\">Value</th>\n")
306 out.write("<th align=\"left\">Value in Lookup Table</th>\n")
307 out.write("<th align=\"left\">Units</th>\n")
308 out.write("\n")
309 out.write("<tr>\n")
310 out.write("<td>MessageID</td>\n")
311 out.write("<td>uint</td>\n")
312 if 'MessageID' in params:
313 out.write(" <td>"+str(params['MessageID'])+"</td>\n")
314 out.write(" <td>"+str(params['MessageID'])+"</td>\n")
315 out.write("</tr>\n")
316 out.write("\n")
317 out.write("<tr>\n")
318 out.write("<td>RepeatIndicator</td>\n")
319 out.write("<td>uint</td>\n")
320 if 'RepeatIndicator' in params:
321 out.write(" <td>"+str(params['RepeatIndicator'])+"</td>\n")
322 if str(params['RepeatIndicator']) in RepeatIndicatorDecodeLut:
323 out.write("<td>"+RepeatIndicatorDecodeLut[str(params['RepeatIndicator'])]+"</td>")
324 else:
325 out.write("<td><i>Missing LUT entry</i></td>")
326 out.write("</tr>\n")
327 out.write("\n")
328 out.write("<tr>\n")
329 out.write("<td>UserID</td>\n")
330 out.write("<td>uint</td>\n")
331 if 'UserID' in params:
332 out.write(" <td>"+str(params['UserID'])+"</td>\n")
333 out.write(" <td>"+str(params['UserID'])+"</td>\n")
334 out.write("</tr>\n")
335 out.write("\n")
336 out.write("<tr>\n")
337 out.write("<td>NavigationStatus</td>\n")
338 out.write("<td>uint</td>\n")
339 if 'NavigationStatus' in params:
340 out.write(" <td>"+str(params['NavigationStatus'])+"</td>\n")
341 if str(params['NavigationStatus']) in NavigationStatusDecodeLut:
342 out.write("<td>"+NavigationStatusDecodeLut[str(params['NavigationStatus'])]+"</td>")
343 else:
344 out.write("<td><i>Missing LUT entry</i></td>")
345 out.write("</tr>\n")
346 out.write("\n")
347 out.write("<tr>\n")
348 out.write("<td>ROT</td>\n")
349 out.write("<td>int</td>\n")
350 if 'ROT' in params:
351 out.write(" <td>"+str(params['ROT'])+"</td>\n")
352 out.write(" <td>"+str(params['ROT'])+"</td>\n")
353 out.write("<td>4.733*sqrt(val) degrees/min</td>\n")
354 out.write("</tr>\n")
355 out.write("\n")
356 out.write("<tr>\n")
357 out.write("<td>SOG</td>\n")
358 out.write("<td>udecimal</td>\n")
359 if 'SOG' in params:
360 out.write(" <td>"+str(params['SOG'])+"</td>\n")
361 if str(params['SOG']) in SOGDecodeLut:
362 out.write("<td>"+SOGDecodeLut[str(params['SOG'])]+"</td>")
363 else:
364 out.write("<td><i>Missing LUT entry</i></td>")
365 out.write("<td>knots</td>\n")
366 out.write("</tr>\n")
367 out.write("\n")
368 out.write("<tr>\n")
369 out.write("<td>PositionAccuracy</td>\n")
370 out.write("<td>uint</td>\n")
371 if 'PositionAccuracy' in params:
372 out.write(" <td>"+str(params['PositionAccuracy'])+"</td>\n")
373 if str(params['PositionAccuracy']) in PositionAccuracyDecodeLut:
374 out.write("<td>"+PositionAccuracyDecodeLut[str(params['PositionAccuracy'])]+"</td>")
375 else:
376 out.write("<td><i>Missing LUT entry</i></td>")
377 out.write("</tr>\n")
378 out.write("\n")
379 out.write("<tr>\n")
380 out.write("<td>longitude</td>\n")
381 out.write("<td>decimal</td>\n")
382 if 'longitude' in params:
383 out.write(" <td>"+str(params['longitude'])+"</td>\n")
384 out.write(" <td>"+str(params['longitude'])+"</td>\n")
385 out.write("<td>degrees</td>\n")
386 out.write("</tr>\n")
387 out.write("\n")
388 out.write("<tr>\n")
389 out.write("<td>latitude</td>\n")
390 out.write("<td>decimal</td>\n")
391 if 'latitude' in params:
392 out.write(" <td>"+str(params['latitude'])+"</td>\n")
393 out.write(" <td>"+str(params['latitude'])+"</td>\n")
394 out.write("<td>degrees</td>\n")
395 out.write("</tr>\n")
396 out.write("\n")
397 out.write("<tr>\n")
398 out.write("<td>COG</td>\n")
399 out.write("<td>udecimal</td>\n")
400 if 'COG' in params:
401 out.write(" <td>"+str(params['COG'])+"</td>\n")
402 out.write(" <td>"+str(params['COG'])+"</td>\n")
403 out.write("<td>degrees</td>\n")
404 out.write("</tr>\n")
405 out.write("\n")
406 out.write("<tr>\n")
407 out.write("<td>TrueHeading</td>\n")
408 out.write("<td>uint</td>\n")
409 if 'TrueHeading' in params:
410 out.write(" <td>"+str(params['TrueHeading'])+"</td>\n")
411 out.write(" <td>"+str(params['TrueHeading'])+"</td>\n")
412 out.write("<td>degrees</td>\n")
413 out.write("</tr>\n")
414 out.write("\n")
415 out.write("<tr>\n")
416 out.write("<td>TimeStamp</td>\n")
417 out.write("<td>uint</td>\n")
418 if 'TimeStamp' in params:
419 out.write(" <td>"+str(params['TimeStamp'])+"</td>\n")
420 if str(params['TimeStamp']) in TimeStampDecodeLut:
421 out.write("<td>"+TimeStampDecodeLut[str(params['TimeStamp'])]+"</td>")
422 else:
423 out.write("<td><i>Missing LUT entry</i></td>")
424 out.write("<td>seconds</td>\n")
425 out.write("</tr>\n")
426 out.write("\n")
427 out.write("<tr>\n")
428 out.write("<td>RegionalReserved</td>\n")
429 out.write("<td>uint</td>\n")
430 if 'RegionalReserved' in params:
431 out.write(" <td>"+str(params['RegionalReserved'])+"</td>\n")
432 out.write(" <td>"+str(params['RegionalReserved'])+"</td>\n")
433 out.write("</tr>\n")
434 out.write("\n")
435 out.write("<tr>\n")
436 out.write("<td>Spare</td>\n")
437 out.write("<td>uint</td>\n")
438 if 'Spare' in params:
439 out.write(" <td>"+str(params['Spare'])+"</td>\n")
440 out.write(" <td>"+str(params['Spare'])+"</td>\n")
441 out.write("</tr>\n")
442 out.write("\n")
443 out.write("<tr>\n")
444 out.write("<td>RAIM</td>\n")
445 out.write("<td>bool</td>\n")
446 if 'RAIM' in params:
447 out.write(" <td>"+str(params['RAIM'])+"</td>\n")
448 if str(params['RAIM']) in RAIMDecodeLut:
449 out.write("<td>"+RAIMDecodeLut[str(params['RAIM'])]+"</td>")
450 else:
451 out.write("<td><i>Missing LUT entry</i></td>")
452 out.write("</tr>\n")
453 out.write("\n")
454 out.write("<tr>\n")
455 out.write("<td>state_syncstate</td>\n")
456 out.write("<td>uint</td>\n")
457 if 'state_syncstate' in params:
458 out.write(" <td>"+str(params['state_syncstate'])+"</td>\n")
459 if str(params['state_syncstate']) in state_syncstateDecodeLut:
460 out.write("<td>"+state_syncstateDecodeLut[str(params['state_syncstate'])]+"</td>")
461 else:
462 out.write("<td><i>Missing LUT entry</i></td>")
463 out.write("</tr>\n")
464 out.write("\n")
465 out.write("<tr>\n")
466 out.write("<td>state_slottimeout</td>\n")
467 out.write("<td>uint</td>\n")
468 if 'state_slottimeout' in params:
469 out.write(" <td>"+str(params['state_slottimeout'])+"</td>\n")
470 if str(params['state_slottimeout']) in state_slottimeoutDecodeLut:
471 out.write("<td>"+state_slottimeoutDecodeLut[str(params['state_slottimeout'])]+"</td>")
472 else:
473 out.write("<td><i>Missing LUT entry</i></td>")
474 out.write("<td>frames</td>\n")
475 out.write("</tr>\n")
476 out.write("\n")
477 out.write("<tr>\n")
478 out.write("<td>state_slotoffset</td>\n")
479 out.write("<td>uint</td>\n")
480 if 'state_slotoffset' in params:
481 out.write(" <td>"+str(params['state_slotoffset'])+"</td>\n")
482 out.write(" <td>"+str(params['state_slotoffset'])+"</td>\n")
483 out.write("</tr>\n")
484 out.write("</table>\n")
485
486
488 '''KML (Keyhole Markup Language) for Google Earth, but without the header/footer'''
489 out.write("\ <Placemark>\n")
490 out.write("\t <name>"+str(params['UserID'])+"</name>\n")
491 out.write("\t\t<description>\n")
492 import StringIO
493 buf = StringIO.StringIO()
494 printHtml(params,buf)
495 import cgi
496 out.write(cgi.escape(buf.getvalue()))
497 out.write("\t\t</description>\n")
498 out.write("\t\t<styleUrl>#m_ylw-pushpin_copy0</styleUrl>\n")
499 out.write("\t\t<Point>\n")
500 out.write("\t\t\t<coordinates>")
501 out.write(str(params['longitude']))
502 out.write(',')
503 out.write(str(params['latitude']))
504 out.write(",0</coordinates>\n")
505 out.write("\t\t</Point>\n")
506 out.write("\t</Placemark>\n")
507
508 -def printFields(params, out=sys.stdout, format='std', fieldList=None, dbType='postgres'):
509 '''Print a position message to stdout.
510
511 Fields in params:
512 - MessageID(uint): AIS message number. Must be 1 (field automatically set to "3")
513 - RepeatIndicator(uint): Indicated how many times a message has been repeated
514 - UserID(uint): Unique ship identification number (MMSI)
515 - NavigationStatus(uint): What is the vessel doing
516 - ROT(int): RateOfTurn
517 - SOG(udecimal): Speed over ground
518 - PositionAccuracy(uint): Accuracy of positioning fixes
519 - longitude(decimal): Location of the vessel East West location
520 - latitude(decimal): Location of the vessel North South location
521 - COG(udecimal): Course over ground
522 - TrueHeading(uint): True heading (relative to true North)
523 - TimeStamp(uint): UTC second when the report was generated
524 - RegionalReserved(uint): Reserved for definition by a regional authority. (field automatically set to "0")
525 - Spare(uint): Not used. Should be set to zero. (field automatically set to "0")
526 - RAIM(bool): Receiver autonomous integrity monitoring flag
527 - state_syncstate(uint): Communications State - SOTDMA Sycronization state
528 - state_slottimeout(uint): Communications State - SOTDMA Frames remaining until a new slot is selected
529 - state_slotoffset(uint): Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
530 @param params: Dictionary of field names/values.
531 @param out: File like object to write to
532 @rtype: stdout
533 @return: text to out
534 '''
535
536 if 'std'==format:
537 out.write("position:\n")
538 if 'MessageID' in params: out.write(" MessageID: "+str(params['MessageID'])+"\n")
539 if 'RepeatIndicator' in params: out.write(" RepeatIndicator: "+str(params['RepeatIndicator'])+"\n")
540 if 'UserID' in params: out.write(" UserID: "+str(params['UserID'])+"\n")
541 if 'NavigationStatus' in params: out.write(" NavigationStatus: "+str(params['NavigationStatus'])+"\n")
542 if 'ROT' in params: out.write(" ROT: "+str(params['ROT'])+"\n")
543 if 'SOG' in params: out.write(" SOG: "+str(params['SOG'])+"\n")
544 if 'PositionAccuracy' in params: out.write(" PositionAccuracy: "+str(params['PositionAccuracy'])+"\n")
545 if 'longitude' in params: out.write(" longitude: "+str(params['longitude'])+"\n")
546 if 'latitude' in params: out.write(" latitude: "+str(params['latitude'])+"\n")
547 if 'COG' in params: out.write(" COG: "+str(params['COG'])+"\n")
548 if 'TrueHeading' in params: out.write(" TrueHeading: "+str(params['TrueHeading'])+"\n")
549 if 'TimeStamp' in params: out.write(" TimeStamp: "+str(params['TimeStamp'])+"\n")
550 if 'RegionalReserved' in params: out.write(" RegionalReserved: "+str(params['RegionalReserved'])+"\n")
551 if 'Spare' in params: out.write(" Spare: "+str(params['Spare'])+"\n")
552 if 'RAIM' in params: out.write(" RAIM: "+str(params['RAIM'])+"\n")
553 if 'state_syncstate' in params: out.write(" state_syncstate: "+str(params['state_syncstate'])+"\n")
554 if 'state_slottimeout' in params: out.write(" state_slottimeout: "+str(params['state_slottimeout'])+"\n")
555 if 'state_slotoffset' in params: out.write(" state_slotoffset: "+str(params['state_slotoffset'])+"\n")
556 elif 'csv'==format:
557 if None == options.fieldList:
558 options.fieldList = fieldList
559 needComma = False;
560 for field in fieldList:
561 if needComma: out.write(',')
562 needComma = True
563 if field in params:
564 out.write(str(params[field]))
565
566 out.write("\n")
567 elif 'html'==format:
568 printHtml(params,out)
569 elif 'sql'==format:
570 sqlInsertStr(params,out,dbType=dbType)
571 elif 'kml'==format:
572 printKml(params,out)
573 elif 'kml-full'==format:
574 out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
575 out.write("<kml xmlns=\"http://earth.google.com/kml/2.1\">\n")
576 out.write("<Document>\n")
577 out.write(" <name>position</name>\n")
578 printKml(params,out)
579 out.write("</Document>\n")
580 out.write("</kml>\n")
581 else:
582 print "ERROR: unknown format:",format
583 assert False
584
585 return
586
587 RepeatIndicatorEncodeLut = {
588 'default':'0',
589 'do not repeat any more':'3',
590 }
591
592 RepeatIndicatorDecodeLut = {
593 '0':'default',
594 '3':'do not repeat any more',
595 }
596
597 NavigationStatusEncodeLut = {
598 'under way using engine':'0',
599 'at anchor':'1',
600 'not under command':'2',
601 'restricted maneuverability':'3',
602 'constrained by her draught':'4',
603 'moored':'5',
604 'aground':'6',
605 'engaged in fishing':'7',
606 'under way sailing':'8',
607 'reserved for future use (hazmat)':'9',
608 'reserved for future use':'10',
609 'reserved for future use':'11',
610 'reserved for future use':'12',
611 'reserved for future use':'13',
612 'reserved for future use':'14',
613 'not defined = default':'15',
614 }
615
616 NavigationStatusDecodeLut = {
617 '0':'under way using engine',
618 '1':'at anchor',
619 '2':'not under command',
620 '3':'restricted maneuverability',
621 '4':'constrained by her draught',
622 '5':'moored',
623 '6':'aground',
624 '7':'engaged in fishing',
625 '8':'under way sailing',
626 '9':'reserved for future use (hazmat)',
627 '10':'reserved for future use',
628 '11':'reserved for future use',
629 '12':'reserved for future use',
630 '13':'reserved for future use',
631 '14':'reserved for future use',
632 '15':'not defined = default',
633 }
634
635 SOGEncodeLut = {
636 '102.2 knots or higher':'102.2',
637 }
638
639 SOGDecodeLut = {
640 '102.2':'102.2 knots or higher',
641 }
642
643 PositionAccuracyEncodeLut = {
644 'low (greater than 10 m)':'0',
645 'high (less than 10 m)':'1',
646 }
647
648 PositionAccuracyDecodeLut = {
649 '0':'low (greater than 10 m)',
650 '1':'high (less than 10 m)',
651 }
652
653 TimeStampEncodeLut = {
654 'not available/default':'60',
655 'manual input':'61',
656 'dead reckoning':'62',
657 'inoperative':'63',
658 }
659
660 TimeStampDecodeLut = {
661 '60':'not available/default',
662 '61':'manual input',
663 '62':'dead reckoning',
664 '63':'inoperative',
665 }
666
667 RAIMEncodeLut = {
668 'not in use':'False',
669 'in use':'True',
670 }
671
672 RAIMDecodeLut = {
673 'False':'not in use',
674 'True':'in use',
675 }
676
677 state_syncstateEncodeLut = {
678 'UTC direct':'0',
679 'UTC indirect':'1',
680 'synchronized to a base station':'2',
681 'synchronized to another station':'3',
682 }
683
684 state_syncstateDecodeLut = {
685 '0':'UTC direct',
686 '1':'UTC indirect',
687 '2':'synchronized to a base station',
688 '3':'synchronized to another station',
689 }
690
691 state_slottimeoutEncodeLut = {
692 'Last frame in this slot':'0',
693 '1 frames left':'1',
694 '2 frames left':'2',
695 '3 frames left':'3',
696 '4 frames left':'4',
697 '5 frames left':'5',
698 '6 frames left':'6',
699 '7 frames left':'7',
700 }
701
702 state_slottimeoutDecodeLut = {
703 '0':'Last frame in this slot',
704 '1':'1 frames left',
705 '2':'2 frames left',
706 '3':'3 frames left',
707 '4':'4 frames left',
708 '5':'5 frames left',
709 '6':'6 frames left',
710 '7':'7 frames left',
711 }
712
713
714
715
716
717 -def sqlCreateStr(outfile=sys.stdout, fields=None, extraFields=None
718 ,addCoastGuardFields=True
719 ,dbType='postgres'
720 ):
721 '''
722 Return the SQL CREATE command for this message type
723 @param outfile: file like object to print to.
724 @param fields: which fields to put in the create. Defaults to all.
725 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields
726 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format
727 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres')
728 @type addCoastGuardFields: bool
729 @return: sql create string
730 @rtype: str
731
732 @see: sqlCreate
733 '''
734
735 outfile.write(str(sqlCreate(fields,extraFields,addCoastGuardFields,dbType=dbType)))
736
737 -def sqlCreate(fields=None, extraFields=None, addCoastGuardFields=True, dbType='postgres'):
738 '''
739 Return the sqlhelp object to create the table.
740
741 @param fields: which fields to put in the create. Defaults to all.
742 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields
743 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format
744 @type addCoastGuardFields: bool
745 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres')
746 @return: An object that can be used to generate a return
747 @rtype: sqlhelp.create
748 '''
749 if None == fields: fields = fieldList
750 import sqlhelp
751 c = sqlhelp.create('position',dbType=dbType)
752 c.addPrimaryKey()
753 if 'MessageID' in fields: c.addInt ('MessageID')
754 if 'RepeatIndicator' in fields: c.addInt ('RepeatIndicator')
755 if 'UserID' in fields: c.addInt ('UserID')
756 if 'NavigationStatus' in fields: c.addInt ('NavigationStatus')
757 if 'ROT' in fields: c.addInt ('ROT')
758 if 'SOG' in fields: c.addDecimal('SOG',4,1)
759 if 'PositionAccuracy' in fields: c.addInt ('PositionAccuracy')
760 if dbType != 'postgres':
761 if 'longitude' in fields: c.addDecimal('longitude',8,5)
762 if dbType != 'postgres':
763 if 'latitude' in fields: c.addDecimal('latitude',8,5)
764 if 'COG' in fields: c.addDecimal('COG',4,1)
765 if 'TrueHeading' in fields: c.addInt ('TrueHeading')
766 if 'TimeStamp' in fields: c.addInt ('TimeStamp')
767 if 'RegionalReserved' in fields: c.addInt ('RegionalReserved')
768 if 'Spare' in fields: c.addInt ('Spare')
769 if 'RAIM' in fields: c.addBool('RAIM')
770 if 'state_syncstate' in fields: c.addInt ('state_syncstate')
771 if 'state_slottimeout' in fields: c.addInt ('state_slottimeout')
772 if 'state_slotoffset' in fields: c.addInt ('state_slotoffset')
773
774 if addCoastGuardFields:
775
776
777
778
779
780 c.addVarChar('cg_r',15)
781 c.addInt('cg_sec')
782
783 c.addTimestamp('cg_timestamp')
784
785 if dbType == 'postgres':
786
787
788 c.addPostGIS('Position','POINT',2,SRID=4326);
789
790 return c
791
792 -def sqlInsertStr(params, outfile=sys.stdout, extraParams=None, dbType='postgres'):
793 '''
794 Return the SQL INSERT command for this message type
795 @param params: dictionary of values keyed by field name
796 @param outfile: file like object to print to.
797 @param extraParams: A sequence of tuples containing (name,sql type) for additional fields
798 @return: sql create string
799 @rtype: str
800
801 @see: sqlCreate
802 '''
803 outfile.write(str(sqlInsert(params,extraParams,dbType=dbType)))
804
805
806 -def sqlInsert(params,extraParams=None,dbType='postgres'):
807 '''
808 Give the SQL INSERT statement
809 @param params: dict keyed by field name of values
810 @param extraParams: any extra fields that you have created beyond the normal ais message fields
811 @rtype: sqlhelp.insert
812 @return: insert class instance
813 @todo: allow optional type checking of params?
814 @warning: this will take invalid keys happily and do what???
815 '''
816 import sqlhelp
817 i = sqlhelp.insert('position',dbType=dbType)
818
819 if dbType=='postgres':
820 finished = []
821 for key in params:
822 if key in finished:
823 continue
824
825 if key not in toPgFields and key not in fromPgFields:
826 if type(params[key])==Decimal: i.add(key,float(params[key]))
827 else: i.add(key,params[key])
828 else:
829 if key in fromPgFields:
830 val = params[key]
831
832 i.addPostGIS(key,val)
833 finished.append(key)
834 else:
835
836 pgName = toPgFields[key]
837
838 valStr=pgTypes[pgName]+'('
839 vals = []
840 for nonPgKey in fromPgFields[pgName]:
841 vals.append(str(params[nonPgKey]))
842 finished.append(nonPgKey)
843 valStr+=' '.join(vals)+')'
844 i.addPostGIS(pgName,valStr)
845 else:
846 for key in params:
847 if type(params[key])==Decimal: i.add(key,float(params[key]))
848 else: i.add(key,params[key])
849
850 if None != extraParams:
851 for key in extraParams:
852 i.add(key,extraParams[key])
853
854 return i
855
856
857
858
859
862 '''
863 Return the LaTeX definition table for this message type
864 @param outfile: file like object to print to.
865 @type outfile: file obj
866 @return: LaTeX table string via the outfile
867 @rtype: str
868
869 '''
870 o = outfile
871
872 o.write('''
873 \\begin{table}%[htb]
874 \\centering
875 \\begin{tabular}{|l|c|l|}
876 \\hline
877 Parameter & Number of bits & Description
878 \\\\ \\hline\\hline
879 MessageID & 6 & AIS message number. Must be 1 \\\\ \hline
880 RepeatIndicator & 2 & Indicated how many times a message has been repeated \\\\ \hline
881 UserID & 30 & Unique ship identification number (MMSI) \\\\ \hline
882 NavigationStatus & 4 & What is the vessel doing \\\\ \hline
883 ROT & 8 & Rate of turning. Positive right; negative left. BROKEN! \\\\ \hline
884 SOG & 10 & Speed over ground \\\\ \hline
885 PositionAccuracy & 1 & Accuracy of positioning fixes \\\\ \hline
886 longitude & 28 & Location of the vessel East West location \\\\ \hline
887 latitude & 27 & Location of the vessel North South location \\\\ \hline
888 COG & 12 & Course over ground \\\\ \hline
889 TrueHeading & 9 & True heading (relative to true North) \\\\ \hline
890 TimeStamp & 6 & UTC second when the report was generated \\\\ \hline
891 RegionalReserved & 4 & Reserved for definition by a regional authority. \\\\ \hline
892 Spare & 1 & Not used. Should be set to zero. \\\\ \hline
893 RAIM & 1 & Receiver autonomous integrity monitoring flag \\\\ \hline
894 state\_syncstate & 2 & Communications State - SOTDMA Sycronization state \\\\ \hline
895 state\_slottimeout & 3 & Communications State - SOTDMA Frames remaining until a new slot is selected \\\\ \hline
896 state\_slotoffset & 14 & Communications State - SOTDMA In what slot will the next transmission occur. BROKEN\\\\ \\hline \\hline
897 Total bits & 168 & Appears to take 1 slot \\\\ \\hline
898 \\end{tabular}
899 \\caption{AIS message number 3: Scheduled position report}
900 \\label{tab:position}
901 \\end{table}
902 ''')
903
904
905
906
907
908 -def textDefinitionTable(outfile=sys.stdout
909 ,delim='\t'
910 ):
911 '''
912 Return the text definition table for this message type
913 @param outfile: file like object to print to.
914 @type outfile: file obj
915 @return: text table string via the outfile
916 @rtype: str
917
918 '''
919 o = outfile
920 o.write('''Parameter'''+delim+'Number of bits'''+delim+'''Description
921 MessageID'''+delim+'''6'''+delim+'''AIS message number. Must be 1
922 RepeatIndicator'''+delim+'''2'''+delim+'''Indicated how many times a message has been repeated
923 UserID'''+delim+'''30'''+delim+'''Unique ship identification number (MMSI)
924 NavigationStatus'''+delim+'''4'''+delim+'''What is the vessel doing
925 ROT'''+delim+'''8'''+delim+'''Rate of turning. Positive right; negative left. BROKEN!
926 SOG'''+delim+'''10'''+delim+'''Speed over ground
927 PositionAccuracy'''+delim+'''1'''+delim+'''Accuracy of positioning fixes
928 longitude'''+delim+'''28'''+delim+'''Location of the vessel East West location
929 latitude'''+delim+'''27'''+delim+'''Location of the vessel North South location
930 COG'''+delim+'''12'''+delim+'''Course over ground
931 TrueHeading'''+delim+'''9'''+delim+'''True heading (relative to true North)
932 TimeStamp'''+delim+'''6'''+delim+'''UTC second when the report was generated
933 RegionalReserved'''+delim+'''4'''+delim+'''Reserved for definition by a regional authority.
934 Spare'''+delim+'''1'''+delim+'''Not used. Should be set to zero.
935 RAIM'''+delim+'''1'''+delim+'''Receiver autonomous integrity monitoring flag
936 state_syncstate'''+delim+'''2'''+delim+'''Communications State - SOTDMA Sycronization state
937 state_slottimeout'''+delim+'''3'''+delim+'''Communications State - SOTDMA Frames remaining until a new slot is selected
938 state_slotoffset'''+delim+'''14'''+delim+'''Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
939 Total bits'''+delim+'''168'''+delim+'''Appears to take 1 slot''')
940
941
942
943
944
945 import unittest
947 '''Return a params file base on the testvalue tags.
948 @rtype: dict
949 @return: params based on testvalue tags
950 '''
951 params = {}
952 params['MessageID'] = 3
953 params['RepeatIndicator'] = 1
954 params['UserID'] = 1193046
955 params['NavigationStatus'] = 3
956 params['ROT'] = -2
957 params['SOG'] = Decimal('101.9')
958 params['PositionAccuracy'] = 1
959 params['longitude'] = Decimal('-122.16328055555556')
960 params['latitude'] = Decimal('37.424458333333334')
961 params['COG'] = Decimal('34.5')
962 params['TrueHeading'] = 41
963 params['TimeStamp'] = 35
964 params['RegionalReserved'] = 0
965 params['Spare'] = 0
966 params['RAIM'] = False
967 params['state_syncstate'] = 2
968 params['state_slottimeout'] = 0
969 params['state_slotoffset'] = 1221
970
971 return params
972
974 '''Use testvalue tag text from each type to build test case the position message'''
976
977 params = testParams()
978 bits = encode(params)
979 r = decode(bits)
980
981
982 self.failUnlessEqual(r['MessageID'],params['MessageID'])
983 self.failUnlessEqual(r['RepeatIndicator'],params['RepeatIndicator'])
984 self.failUnlessEqual(r['UserID'],params['UserID'])
985 self.failUnlessEqual(r['NavigationStatus'],params['NavigationStatus'])
986 self.failUnlessEqual(r['ROT'],params['ROT'])
987 self.failUnlessAlmostEqual(r['SOG'],params['SOG'],1)
988 self.failUnlessEqual(r['PositionAccuracy'],params['PositionAccuracy'])
989 self.failUnlessAlmostEqual(r['longitude'],params['longitude'],5)
990 self.failUnlessAlmostEqual(r['latitude'],params['latitude'],5)
991 self.failUnlessAlmostEqual(r['COG'],params['COG'],1)
992 self.failUnlessEqual(r['TrueHeading'],params['TrueHeading'])
993 self.failUnlessEqual(r['TimeStamp'],params['TimeStamp'])
994 self.failUnlessEqual(r['RegionalReserved'],params['RegionalReserved'])
995 self.failUnlessEqual(r['Spare'],params['Spare'])
996 self.failUnlessEqual(r['RAIM'],params['RAIM'])
997 self.failUnlessEqual(r['state_syncstate'],params['state_syncstate'])
998 self.failUnlessEqual(r['state_slottimeout'],params['state_slottimeout'])
999 self.failUnlessEqual(r['state_slotoffset'],params['state_slotoffset'])
1000
1002 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true',
1003 help='decode a "position" AIS message')
1004 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true',
1005 help='encode a "position" AIS message')
1006 parser.add_option('--RepeatIndicator-field', dest='RepeatIndicatorField',default=0,metavar='uint',type='int'
1007 ,help='Field parameter value [default: %default]')
1008 parser.add_option('--UserID-field', dest='UserIDField',metavar='uint',type='int'
1009 ,help='Field parameter value [default: %default]')
1010 parser.add_option('--NavigationStatus-field', dest='NavigationStatusField',default=15,metavar='uint',type='int'
1011 ,help='Field parameter value [default: %default]')
1012 parser.add_option('--ROT-field', dest='ROTField',default=-128,metavar='int',type='int'
1013 ,help='Field parameter value [default: %default]')
1014 parser.add_option('--SOG-field', dest='SOGField',default=Decimal('102.3'),metavar='udecimal',type='string'
1015 ,help='Field parameter value [default: %default]')
1016 parser.add_option('--PositionAccuracy-field', dest='PositionAccuracyField',metavar='uint',type='int'
1017 ,help='Field parameter value [default: %default]')
1018 parser.add_option('--longitude-field', dest='longitudeField',default=Decimal('181'),metavar='decimal',type='string'
1019 ,help='Field parameter value [default: %default]')
1020 parser.add_option('--latitude-field', dest='latitudeField',default=Decimal('91'),metavar='decimal',type='string'
1021 ,help='Field parameter value [default: %default]')
1022 parser.add_option('--COG-field', dest='COGField',default=Decimal('360'),metavar='udecimal',type='string'
1023 ,help='Field parameter value [default: %default]')
1024 parser.add_option('--TrueHeading-field', dest='TrueHeadingField',default=511,metavar='uint',type='int'
1025 ,help='Field parameter value [default: %default]')
1026 parser.add_option('--TimeStamp-field', dest='TimeStampField',default=60,metavar='uint',type='int'
1027 ,help='Field parameter value [default: %default]')
1028 parser.add_option('--RAIM-field', dest='RAIMField',metavar='bool',type='int'
1029 ,help='Field parameter value [default: %default]')
1030 parser.add_option('--state_syncstate-field', dest='state_syncstateField',metavar='uint',type='int'
1031 ,help='Field parameter value [default: %default]')
1032 parser.add_option('--state_slottimeout-field', dest='state_slottimeoutField',metavar='uint',type='int'
1033 ,help='Field parameter value [default: %default]')
1034 parser.add_option('--state_slotoffset-field', dest='state_slotoffsetField',metavar='uint',type='int'
1035 ,help='Field parameter value [default: %default]')
1036
1037
1038 if __name__=='__main__':
1039
1040 from optparse import OptionParser
1041 parser = OptionParser(usage="%prog [options]",
1042 version="%prog "+__version__)
1043
1044 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true',
1045 help='run the documentation tests')
1046 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true',
1047 help='run the unit tests')
1048 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true',
1049 help='Make the test output verbose')
1050
1051
1052
1053 typeChoices = ('binary','nmeapayload','nmea')
1054 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType'
1055 ,default='nmeapayload'
1056 ,help='What kind of string to write for encoding ('+', '.join(typeChoices)+') [default: %default]')
1057
1058
1059 outputChoices = ('std','html','csv','sql' , 'kml','kml-full')
1060 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType'
1061 ,default='std'
1062 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]')
1063
1064 parser.add_option('-o','--output',dest='outputFileName',default=None,
1065 help='Name of the python file to write [default: stdout]')
1066
1067 parser.add_option('-f','--fields',dest='fieldList',default=None, action='append',
1068 choices=fieldList,
1069 help='Which fields to include in the output. Currently only for csv output [default: all]')
1070
1071 parser.add_option('-p','--print-csv-field-list',dest='printCsvfieldList',default=False,action='store_true',
1072 help='Print the field name for csv')
1073
1074 parser.add_option('-c','--sql-create',dest='sqlCreate',default=False,action='store_true',
1075 help='Print out an sql create command for the table.')
1076
1077 parser.add_option('--latex-table',dest='latexDefinitionTable',default=False,action='store_true',
1078 help='Print a LaTeX table of the type')
1079
1080 parser.add_option('--text-table',dest='textDefinitionTable',default=False,action='store_true',
1081 help='Print delimited table of the type (for Word table importing)')
1082 parser.add_option('--delimt-text-table',dest='delimTextDefinitionTable',default='\t'
1083 ,help='Delimiter for text table [default: \'%default\'](for Word table importing)')
1084
1085
1086 dbChoices = ('sqlite','postgres')
1087 parser.add_option('-D','--db-type',dest='dbType',default='postgres'
1088 ,choices=dbChoices,type='choice'
1089 ,help='What kind of database ('+', '.join(dbChoices)+') [default: %default]')
1090
1091 addMsgOptions(parser)
1092
1093 (options,args) = parser.parse_args()
1094 success=True
1095
1096 if options.doctest:
1097 import os; print os.path.basename(sys.argv[0]), 'doctests ...',
1098 sys.argv= [sys.argv[0]]
1099 if options.verbose: sys.argv.append('-v')
1100 import doctest
1101 numfail,numtests=doctest.testmod()
1102 if numfail==0: print 'ok'
1103 else:
1104 print 'FAILED'
1105 success=False
1106
1107 if not success: sys.exit('Something Failed')
1108 del success
1109
1110 if options.unittest:
1111 sys.argv = [sys.argv[0]]
1112 if options.verbose: sys.argv.append('-v')
1113 unittest.main()
1114
1115 outfile = sys.stdout
1116 if None!=options.outputFileName:
1117 outfile = file(options.outputFileName,'w')
1118
1119
1120 if options.doEncode:
1121
1122 if None==options.RepeatIndicatorField: parser.error("missing value for RepeatIndicatorField")
1123 if None==options.UserIDField: parser.error("missing value for UserIDField")
1124 if None==options.NavigationStatusField: parser.error("missing value for NavigationStatusField")
1125 if None==options.ROTField: parser.error("missing value for ROTField")
1126 if None==options.SOGField: parser.error("missing value for SOGField")
1127 if None==options.PositionAccuracyField: parser.error("missing value for PositionAccuracyField")
1128 if None==options.longitudeField: parser.error("missing value for longitudeField")
1129 if None==options.latitudeField: parser.error("missing value for latitudeField")
1130 if None==options.COGField: parser.error("missing value for COGField")
1131 if None==options.TrueHeadingField: parser.error("missing value for TrueHeadingField")
1132 if None==options.TimeStampField: parser.error("missing value for TimeStampField")
1133 if None==options.RAIMField: parser.error("missing value for RAIMField")
1134 if None==options.state_syncstateField: parser.error("missing value for state_syncstateField")
1135 if None==options.state_slottimeoutField: parser.error("missing value for state_slottimeoutField")
1136 if None==options.state_slotoffsetField: parser.error("missing value for state_slotoffsetField")
1137 msgDict={
1138 'MessageID': '3',
1139 'RepeatIndicator': options.RepeatIndicatorField,
1140 'UserID': options.UserIDField,
1141 'NavigationStatus': options.NavigationStatusField,
1142 'ROT': options.ROTField,
1143 'SOG': options.SOGField,
1144 'PositionAccuracy': options.PositionAccuracyField,
1145 'longitude': options.longitudeField,
1146 'latitude': options.latitudeField,
1147 'COG': options.COGField,
1148 'TrueHeading': options.TrueHeadingField,
1149 'TimeStamp': options.TimeStampField,
1150 'RegionalReserved': '0',
1151 'Spare': '0',
1152 'RAIM': options.RAIMField,
1153 'state_syncstate': options.state_syncstateField,
1154 'state_slottimeout': options.state_slottimeoutField,
1155 'state_slotoffset': options.state_slotoffsetField,
1156 }
1157
1158 bits = encode(msgDict)
1159 if 'binary'==options.ioType: print str(bits)
1160 elif 'nmeapayload'==options.ioType:
1161
1162 print "bitLen",len(bits)
1163 bitLen=len(bits)
1164 if bitLen%6!=0:
1165 bits = bits + BitVector(size=(6 - (bitLen%6)))
1166 print "result:",binary.bitvectoais6(bits)[0]
1167
1168
1169
1170 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability")
1171 else: sys.exit('ERROR: unknown ioType. Help!')
1172
1173
1174 if options.sqlCreate:
1175 sqlCreateStr(outfile,options.fieldList,dbType=options.dbType)
1176
1177 if options.latexDefinitionTable:
1178 latexDefinitionTable(outfile)
1179
1180
1181 if options.textDefinitionTable:
1182 textDefinitionTable(outfile,options.delimTextDefinitionTable)
1183
1184 if options.printCsvfieldList:
1185
1186 if None == options.fieldList: options.fieldList = fieldList
1187 import StringIO
1188 buf = StringIO.StringIO()
1189 for field in options.fieldList:
1190 buf.write(field+',')
1191 result = buf.getvalue()
1192 if result[-1] == ',': print result[:-1]
1193 else: print result
1194
1195 if options.doDecode:
1196 if len(args)==0: args = sys.stdin
1197 for msg in args:
1198 bv = None
1199
1200 if msg[0] in ('$','!') and msg[3:6] in ('VDM','VDO'):
1201
1202
1203 bv = binary.ais6tobitvec(msg.split(',')[5])
1204 else:
1205
1206 binaryMsg=True
1207 for c in msg:
1208 if c not in ('0','1'):
1209 binaryMsg=False
1210 break
1211 if binaryMsg:
1212 bv = BitVector(bitstring=msg)
1213 else:
1214 bv = binary.ais6tobitvec(msg)
1215
1216 printFields(decode(bv)
1217 ,out=outfile
1218 ,format=options.outputType
1219 ,fieldList=options.fieldList
1220 ,dbType=options.dbType
1221 )
1222