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 'SeqNum',
54 'DestinationID',
55 'RetransmitFlag',
56 'Spare',
57 )
58
59 fieldListPostgres = (
60 'MessageID',
61 'RepeatIndicator',
62 'UserID',
63 'SeqNum',
64 'DestinationID',
65 'RetransmitFlag',
66 'Spare',
67 )
68
69 toPgFields = {
70 }
71 '''
72 Go to the Postgis field names from the straight field name
73 '''
74
75 fromPgFields = {
76 }
77 '''
78 Go from the Postgis field names to the straight field name
79 '''
80
81 pgTypes = {
82 }
83 '''
84 Lookup table for each postgis field name to get its type.
85 '''
86
87 -def encode(params, validate=False):
88 '''Create a asrm binary message payload to pack into an AIS Msg asrm.
89
90 Fields in params:
91 - MessageID(uint): AIS message number. Must be 6 (field automatically set to "6")
92 - RepeatIndicator(uint): Indicated how many times a message has been repeated
93 - UserID(uint): Unique ship identification number (MMSI). Also known as the Source ID
94 - SeqNum(uint): Sequence number as described in 5.3.1. Assigned to each station
95 - DestinationID(uint): Unique ship identification number (MMSI).
96 - RetransmitFlag(bool): Should the message be restransmitted?
97 - Spare(uint): Must be 0 (field automatically set to "0")
98 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing
99 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
100 @rtype: BitVector
101 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8
102 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits.
103 '''
104
105 bvList = []
106 bvList.append(binary.setBitVectorSize(BitVector(intVal=6),6))
107 if 'RepeatIndicator' in params:
108 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['RepeatIndicator']),2))
109 else:
110 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),2))
111 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['UserID']),30))
112 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['SeqNum']),2))
113 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['DestinationID']),30))
114 if params["RetransmitFlag"]: bvList.append(TrueBV)
115 else: bvList.append(FalseBV)
116 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),1))
117
118 return binary.joinBV(bvList)
119
120 -def decode(bv, validate=False):
121 '''Unpack a asrm message
122
123 Fields in params:
124 - MessageID(uint): AIS message number. Must be 6 (field automatically set to "6")
125 - RepeatIndicator(uint): Indicated how many times a message has been repeated
126 - UserID(uint): Unique ship identification number (MMSI). Also known as the Source ID
127 - SeqNum(uint): Sequence number as described in 5.3.1. Assigned to each station
128 - DestinationID(uint): Unique ship identification number (MMSI).
129 - RetransmitFlag(bool): Should the message be restransmitted?
130 - Spare(uint): Must be 0 (field automatically set to "0")
131 @type bv: BitVector
132 @param bv: Bits defining a message
133 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
134 @rtype: dict
135 @return: params
136 '''
137
138
139
140
141 r = {}
142 r['MessageID']=6
143 r['RepeatIndicator']=int(bv[6:8])
144 r['UserID']=int(bv[8:38])
145 r['SeqNum']=int(bv[38:40])
146 r['DestinationID']=int(bv[40:70])
147 r['RetransmitFlag']=bool(int(bv[70:71]))
148 r['Spare']=0
149 return r
150
153
156
159
161 return int(bv[38:40])
162
164 return int(bv[40:70])
165
167 return bool(int(bv[70:71]))
168
171
172
174 out.write("<h3>asrm</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>MessageID</td>\n")
185 out.write("<td>uint</td>\n")
186 if 'MessageID' in params:
187 out.write(" <td>"+str(params['MessageID'])+"</td>\n")
188 out.write(" <td>"+str(params['MessageID'])+"</td>\n")
189 out.write("</tr>\n")
190 out.write("\n")
191 out.write("<tr>\n")
192 out.write("<td>RepeatIndicator</td>\n")
193 out.write("<td>uint</td>\n")
194 if 'RepeatIndicator' in params:
195 out.write(" <td>"+str(params['RepeatIndicator'])+"</td>\n")
196 if str(params['RepeatIndicator']) in RepeatIndicatorDecodeLut:
197 out.write("<td>"+RepeatIndicatorDecodeLut[str(params['RepeatIndicator'])]+"</td>")
198 else:
199 out.write("<td><i>Missing LUT entry</i></td>")
200 out.write("</tr>\n")
201 out.write("\n")
202 out.write("<tr>\n")
203 out.write("<td>UserID</td>\n")
204 out.write("<td>uint</td>\n")
205 if 'UserID' in params:
206 out.write(" <td>"+str(params['UserID'])+"</td>\n")
207 out.write(" <td>"+str(params['UserID'])+"</td>\n")
208 out.write("</tr>\n")
209 out.write("\n")
210 out.write("<tr>\n")
211 out.write("<td>SeqNum</td>\n")
212 out.write("<td>uint</td>\n")
213 if 'SeqNum' in params:
214 out.write(" <td>"+str(params['SeqNum'])+"</td>\n")
215 out.write(" <td>"+str(params['SeqNum'])+"</td>\n")
216 out.write("</tr>\n")
217 out.write("\n")
218 out.write("<tr>\n")
219 out.write("<td>DestinationID</td>\n")
220 out.write("<td>uint</td>\n")
221 if 'DestinationID' in params:
222 out.write(" <td>"+str(params['DestinationID'])+"</td>\n")
223 out.write(" <td>"+str(params['DestinationID'])+"</td>\n")
224 out.write("</tr>\n")
225 out.write("\n")
226 out.write("<tr>\n")
227 out.write("<td>RetransmitFlag</td>\n")
228 out.write("<td>bool</td>\n")
229 if 'RetransmitFlag' in params:
230 out.write(" <td>"+str(params['RetransmitFlag'])+"</td>\n")
231 out.write(" <td>"+str(params['RetransmitFlag'])+"</td>\n")
232 out.write("</tr>\n")
233 out.write("\n")
234 out.write("<tr>\n")
235 out.write("<td>Spare</td>\n")
236 out.write("<td>uint</td>\n")
237 if 'Spare' in params:
238 out.write(" <td>"+str(params['Spare'])+"</td>\n")
239 out.write(" <td>"+str(params['Spare'])+"</td>\n")
240 out.write("</tr>\n")
241 out.write("</table>\n")
242
243 -def printFields(params, out=sys.stdout, format='std', fieldList=None, dbType='postgres'):
244 '''Print a asrm message to stdout.
245
246 Fields in params:
247 - MessageID(uint): AIS message number. Must be 6 (field automatically set to "6")
248 - RepeatIndicator(uint): Indicated how many times a message has been repeated
249 - UserID(uint): Unique ship identification number (MMSI). Also known as the Source ID
250 - SeqNum(uint): Sequence number as described in 5.3.1. Assigned to each station
251 - DestinationID(uint): Unique ship identification number (MMSI).
252 - RetransmitFlag(bool): Should the message be restransmitted?
253 - Spare(uint): Must be 0 (field automatically set to "0")
254 @param params: Dictionary of field names/values.
255 @param out: File like object to write to
256 @rtype: stdout
257 @return: text to out
258 '''
259
260 if 'std'==format:
261 out.write("asrm:\n")
262 if 'MessageID' in params: out.write(" MessageID: "+str(params['MessageID'])+"\n")
263 if 'RepeatIndicator' in params: out.write(" RepeatIndicator: "+str(params['RepeatIndicator'])+"\n")
264 if 'UserID' in params: out.write(" UserID: "+str(params['UserID'])+"\n")
265 if 'SeqNum' in params: out.write(" SeqNum: "+str(params['SeqNum'])+"\n")
266 if 'DestinationID' in params: out.write(" DestinationID: "+str(params['DestinationID'])+"\n")
267 if 'RetransmitFlag' in params: out.write(" RetransmitFlag: "+str(params['RetransmitFlag'])+"\n")
268 if 'Spare' in params: out.write(" Spare: "+str(params['Spare'])+"\n")
269 elif 'csv'==format:
270 if None == options.fieldList:
271 options.fieldList = fieldList
272 needComma = False;
273 for field in fieldList:
274 if needComma: out.write(',')
275 needComma = True
276 if field in params:
277 out.write(str(params[field]))
278
279 out.write("\n")
280 elif 'html'==format:
281 printHtml(params,out)
282 elif 'sql'==format:
283 sqlInsertStr(params,out,dbType=dbType)
284 else:
285 print "ERROR: unknown format:",format
286 assert False
287
288 return
289
290 RepeatIndicatorEncodeLut = {
291 'default':'0',
292 'do not repeat any more':'3',
293 }
294
295 RepeatIndicatorDecodeLut = {
296 '0':'default',
297 '3':'do not repeat any more',
298 }
299
300
301
302
303
304 -def sqlCreateStr(outfile=sys.stdout, fields=None, extraFields=None
305 ,addCoastGuardFields=True
306 ,dbType='postgres'
307 ):
308 '''
309 Return the SQL CREATE command for this message type
310 @param outfile: file like object to print to.
311 @param fields: which fields to put in the create. Defaults to all.
312 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields
313 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format
314 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres')
315 @type addCoastGuardFields: bool
316 @return: sql create string
317 @rtype: str
318
319 @see: sqlCreate
320 '''
321
322 outfile.write(str(sqlCreate(fields,extraFields,addCoastGuardFields,dbType=dbType)))
323
324 -def sqlCreate(fields=None, extraFields=None, addCoastGuardFields=True, dbType='postgres'):
325 '''
326 Return the sqlhelp object to create the table.
327
328 @param fields: which fields to put in the create. Defaults to all.
329 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields
330 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format
331 @type addCoastGuardFields: bool
332 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres')
333 @return: An object that can be used to generate a return
334 @rtype: sqlhelp.create
335 '''
336 if None == fields: fields = fieldList
337 import sqlhelp
338 c = sqlhelp.create('asrm',dbType=dbType)
339 c.addPrimaryKey()
340 if 'MessageID' in fields: c.addInt ('MessageID')
341 if 'RepeatIndicator' in fields: c.addInt ('RepeatIndicator')
342 if 'UserID' in fields: c.addInt ('UserID')
343 if 'SeqNum' in fields: c.addInt ('SeqNum')
344 if 'DestinationID' in fields: c.addInt ('DestinationID')
345 if 'RetransmitFlag' in fields: c.addBool('RetransmitFlag')
346 if 'Spare' in fields: c.addInt ('Spare')
347
348 if addCoastGuardFields:
349
350
351
352
353
354 c.addVarChar('cg_r',15)
355 c.addInt('cg_sec')
356
357 c.addTimestamp('cg_timestamp')
358
359 return c
360
361 -def sqlInsertStr(params, outfile=sys.stdout, extraParams=None, dbType='postgres'):
362 '''
363 Return the SQL INSERT command for this message type
364 @param params: dictionary of values keyed by field name
365 @param outfile: file like object to print to.
366 @param extraParams: A sequence of tuples containing (name,sql type) for additional fields
367 @return: sql create string
368 @rtype: str
369
370 @see: sqlCreate
371 '''
372 outfile.write(str(sqlInsert(params,extraParams,dbType=dbType)))
373
374
375 -def sqlInsert(params,extraParams=None,dbType='postgres'):
376 '''
377 Give the SQL INSERT statement
378 @param params: dict keyed by field name of values
379 @param extraParams: any extra fields that you have created beyond the normal ais message fields
380 @rtype: sqlhelp.insert
381 @return: insert class instance
382 @todo: allow optional type checking of params?
383 @warning: this will take invalid keys happily and do what???
384 '''
385 import sqlhelp
386 i = sqlhelp.insert('asrm',dbType=dbType)
387
388 if dbType=='postgres':
389 finished = []
390 for key in params:
391 if key in finished:
392 continue
393
394 if key not in toPgFields and key not in fromPgFields:
395 if type(params[key])==Decimal: i.add(key,float(params[key]))
396 else: i.add(key,params[key])
397 else:
398 if key in fromPgFields:
399 val = params[key]
400
401 i.addPostGIS(key,val)
402 finished.append(key)
403 else:
404
405 pgName = toPgFields[key]
406
407 valStr=pgTypes[pgName]+'('
408 vals = []
409 for nonPgKey in fromPgFields[pgName]:
410 vals.append(str(params[nonPgKey]))
411 finished.append(nonPgKey)
412 valStr+=' '.join(vals)+')'
413 i.addPostGIS(pgName,valStr)
414 else:
415 for key in params:
416 if type(params[key])==Decimal: i.add(key,float(params[key]))
417 else: i.add(key,params[key])
418
419 if None != extraParams:
420 for key in extraParams:
421 i.add(key,extraParams[key])
422
423 return i
424
425
426
427
428
431 '''
432 Return the LaTeX definition table for this message type
433 @param outfile: file like object to print to.
434 @type outfile: file obj
435 @return: LaTeX table string via the outfile
436 @rtype: str
437
438 '''
439 o = outfile
440
441 o.write('''
442 \\begin{table}%[htb]
443 \\centering
444 \\begin{tabular}{|l|c|l|}
445 \\hline
446 Parameter & Number of bits & Description
447 \\\\ \\hline\\hline
448 MessageID & 6 & AIS message number. Must be 6 \\\\ \hline
449 RepeatIndicator & 2 & Indicated how many times a message has been repeated \\\\ \hline
450 UserID & 30 & Unique ship identification number (MMSI). Also known as the Source ID \\\\ \hline
451 SeqNum & 2 & Sequence number as described in 5.3.1. Assigned to each station \\\\ \hline
452 DestinationID & 30 & Unique ship identification number (MMSI). \\\\ \hline
453 RetransmitFlag & 1 & Should the message be restransmitted? \\\\ \hline
454 Spare & 1 & Must be 0\\\\ \\hline \\hline
455 Total bits & 72 & Appears to take 1 slot with 96 pad bits to fill the last slot \\\\ \\hline
456 \\end{tabular}
457 \\caption{AIS message number 8: Addressed safety related message. FIX: need to handle the -1 string length at the end}
458 \\label{tab:asrm}
459 \\end{table}
460 ''')
461
462
463
464
465
466 -def textDefinitionTable(outfile=sys.stdout
467 ,delim='\t'
468 ):
469 '''
470 Return the text definition table for this message type
471 @param outfile: file like object to print to.
472 @type outfile: file obj
473 @return: text table string via the outfile
474 @rtype: str
475
476 '''
477 o = outfile
478 o.write('''Parameter'''+delim+'Number of bits'''+delim+'''Description
479 MessageID'''+delim+'''6'''+delim+'''AIS message number. Must be 6
480 RepeatIndicator'''+delim+'''2'''+delim+'''Indicated how many times a message has been repeated
481 UserID'''+delim+'''30'''+delim+'''Unique ship identification number (MMSI). Also known as the Source ID
482 SeqNum'''+delim+'''2'''+delim+'''Sequence number as described in 5.3.1. Assigned to each station
483 DestinationID'''+delim+'''30'''+delim+'''Unique ship identification number (MMSI).
484 RetransmitFlag'''+delim+'''1'''+delim+'''Should the message be restransmitted?
485 Spare'''+delim+'''1'''+delim+'''Must be 0
486 Total bits'''+delim+'''72'''+delim+'''Appears to take 1 slot with 96 pad bits to fill the last slot''')
487
488
489
490
491
492 import unittest
494 '''Return a params file base on the testvalue tags.
495 @rtype: dict
496 @return: params based on testvalue tags
497 '''
498 params = {}
499 params['MessageID'] = 6
500 params['RepeatIndicator'] = 1
501 params['UserID'] = 1193046
502 params['SeqNum'] = 3
503 params['DestinationID'] = 1193047
504 params['RetransmitFlag'] = True
505 params['Spare'] = 0
506
507 return params
508
510 '''Use testvalue tag text from each type to build test case the asrm message'''
512
513 params = testParams()
514 bits = encode(params)
515 r = decode(bits)
516
517
518 self.failUnlessEqual(r['MessageID'],params['MessageID'])
519 self.failUnlessEqual(r['RepeatIndicator'],params['RepeatIndicator'])
520 self.failUnlessEqual(r['UserID'],params['UserID'])
521 self.failUnlessEqual(r['SeqNum'],params['SeqNum'])
522 self.failUnlessEqual(r['DestinationID'],params['DestinationID'])
523 self.failUnlessEqual(r['RetransmitFlag'],params['RetransmitFlag'])
524 self.failUnlessEqual(r['Spare'],params['Spare'])
525
527 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true',
528 help='decode a "asrm" AIS message')
529 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true',
530 help='encode a "asrm" AIS message')
531 parser.add_option('--RepeatIndicator-field', dest='RepeatIndicatorField',default=0,metavar='uint',type='int'
532 ,help='Field parameter value [default: %default]')
533 parser.add_option('--UserID-field', dest='UserIDField',metavar='uint',type='int'
534 ,help='Field parameter value [default: %default]')
535 parser.add_option('--SeqNum-field', dest='SeqNumField',metavar='uint',type='int'
536 ,help='Field parameter value [default: %default]')
537 parser.add_option('--DestinationID-field', dest='DestinationIDField',metavar='uint',type='int'
538 ,help='Field parameter value [default: %default]')
539 parser.add_option('--RetransmitFlag-field', dest='RetransmitFlagField',metavar='bool',type='int'
540 ,help='Field parameter value [default: %default]')
541
542
543 if __name__=='__main__':
544
545 from optparse import OptionParser
546 parser = OptionParser(usage="%prog [options]",
547 version="%prog "+__version__)
548
549 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true',
550 help='run the documentation tests')
551 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true',
552 help='run the unit tests')
553 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true',
554 help='Make the test output verbose')
555
556
557
558 typeChoices = ('binary','nmeapayload','nmea')
559 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType'
560 ,default='nmeapayload'
561 ,help='What kind of string to write for encoding ('+', '.join(typeChoices)+') [default: %default]')
562
563
564 outputChoices = ('std','html','csv','sql' )
565 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType'
566 ,default='std'
567 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]')
568
569 parser.add_option('-o','--output',dest='outputFileName',default=None,
570 help='Name of the python file to write [default: stdout]')
571
572 parser.add_option('-f','--fields',dest='fieldList',default=None, action='append',
573 choices=fieldList,
574 help='Which fields to include in the output. Currently only for csv output [default: all]')
575
576 parser.add_option('-p','--print-csv-field-list',dest='printCsvfieldList',default=False,action='store_true',
577 help='Print the field name for csv')
578
579 parser.add_option('-c','--sql-create',dest='sqlCreate',default=False,action='store_true',
580 help='Print out an sql create command for the table.')
581
582 parser.add_option('--latex-table',dest='latexDefinitionTable',default=False,action='store_true',
583 help='Print a LaTeX table of the type')
584
585 parser.add_option('--text-table',dest='textDefinitionTable',default=False,action='store_true',
586 help='Print delimited table of the type (for Word table importing)')
587 parser.add_option('--delimt-text-table',dest='delimTextDefinitionTable',default='\t'
588 ,help='Delimiter for text table [default: \'%default\'](for Word table importing)')
589
590
591 dbChoices = ('sqlite','postgres')
592 parser.add_option('-D','--db-type',dest='dbType',default='postgres'
593 ,choices=dbChoices,type='choice'
594 ,help='What kind of database ('+', '.join(dbChoices)+') [default: %default]')
595
596 addMsgOptions(parser)
597
598 (options,args) = parser.parse_args()
599 success=True
600
601 if options.doctest:
602 import os; print os.path.basename(sys.argv[0]), 'doctests ...',
603 sys.argv= [sys.argv[0]]
604 if options.verbose: sys.argv.append('-v')
605 import doctest
606 numfail,numtests=doctest.testmod()
607 if numfail==0: print 'ok'
608 else:
609 print 'FAILED'
610 success=False
611
612 if not success: sys.exit('Something Failed')
613 del success
614
615 if options.unittest:
616 sys.argv = [sys.argv[0]]
617 if options.verbose: sys.argv.append('-v')
618 unittest.main()
619
620 outfile = sys.stdout
621 if None!=options.outputFileName:
622 outfile = file(options.outputFileName,'w')
623
624
625 if options.doEncode:
626
627 if None==options.RepeatIndicatorField: parser.error("missing value for RepeatIndicatorField")
628 if None==options.UserIDField: parser.error("missing value for UserIDField")
629 if None==options.SeqNumField: parser.error("missing value for SeqNumField")
630 if None==options.DestinationIDField: parser.error("missing value for DestinationIDField")
631 if None==options.RetransmitFlagField: parser.error("missing value for RetransmitFlagField")
632 msgDict={
633 'MessageID': '6',
634 'RepeatIndicator': options.RepeatIndicatorField,
635 'UserID': options.UserIDField,
636 'SeqNum': options.SeqNumField,
637 'DestinationID': options.DestinationIDField,
638 'RetransmitFlag': options.RetransmitFlagField,
639 'Spare': '0',
640 }
641
642 bits = encode(msgDict)
643 if 'binary'==options.ioType: print str(bits)
644 elif 'nmeapayload'==options.ioType:
645
646 print "bitLen",len(bits)
647 bitLen=len(bits)
648 if bitLen%6!=0:
649 bits = bits + BitVector(size=(6 - (bitLen%6)))
650 print "result:",binary.bitvectoais6(bits)[0]
651
652
653
654 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability")
655 else: sys.exit('ERROR: unknown ioType. Help!')
656
657
658 if options.sqlCreate:
659 sqlCreateStr(outfile,options.fieldList,dbType=options.dbType)
660
661 if options.latexDefinitionTable:
662 latexDefinitionTable(outfile)
663
664
665 if options.textDefinitionTable:
666 textDefinitionTable(outfile,options.delimTextDefinitionTable)
667
668 if options.printCsvfieldList:
669
670 if None == options.fieldList: options.fieldList = fieldList
671 import StringIO
672 buf = StringIO.StringIO()
673 for field in options.fieldList:
674 buf.write(field+',')
675 result = buf.getvalue()
676 if result[-1] == ',': print result[:-1]
677 else: print result
678
679 if options.doDecode:
680 if len(args)==0: args = sys.stdin
681 for msg in args:
682 bv = None
683
684 if msg[0] in ('$','!') and msg[3:6] in ('VDM','VDO'):
685
686
687 bv = binary.ais6tobitvec(msg.split(',')[5])
688 else:
689
690 binaryMsg=True
691 for c in msg:
692 if c not in ('0','1'):
693 binaryMsg=False
694 break
695 if binaryMsg:
696 bv = BitVector(bitstring=msg)
697 else:
698 bv = binary.ais6tobitvec(msg)
699
700 printFields(decode(bv)
701 ,out=outfile
702 ,format=options.outputType
703 ,fieldList=options.fieldList
704 ,dbType=options.dbType
705 )
706