1
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
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 fieldList = [
49 'dac',
50 'reqDecimal',
51 'unavail_uint',
52 'anUInt',
53 'anInt',
54 'aBool',
55 'aStr',
56 'anUDecimal',
57 'aDecimal',
58 'aFloat',
59 ]
60
61 -def encode(params, validate=False):
62 '''Create a alltypesmsg binary message payload to pack into an AIS Msg alltypesmsg.
63
64 Fields in params:
65 - dac(uint): Designated Area Code (field automatically set to "366")
66 - reqDecimal(decimal): required decimal value... FIX: scale or no? (field automatically set to "122")
67 - unavail_uint(uint): Unavailable unsigned integer
68 - anUInt(uint): NO unavailable unsigned integer
69 - anInt(int): NO unavailable signed integer
70 - aBool(bool): Simple bool
71 - aStr(aisstr6): An ais string of 5 characters
72 - anUDecimal(udecimal): An unsigned decimal. Allow smaller numbers
73 - aDecimal(decimal): A decimal
74 - aFloat(float): An IEEE floating point number
75 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing
76 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
77 @rtype: BitVector
78 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8
79 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits.
80 '''
81
82 bvList = []
83 bvList.append(binary.setBitVectorSize(BitVector(intVal=366),16))
84 bvList.append(binary.bvFromSignedInt(122,8))
85 if 'unavail_uint' in params:
86 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['unavail_uint']),2))
87 else:
88 bvList.append(binary.setBitVectorSize(BitVector(intVal=3),2))
89 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['anUInt']),2))
90 bvList.append(binary.bvFromSignedInt(params['anInt'],3))
91 if params["aBool"]: bvList.append(TrueBV)
92 else: bvList.append(FalseBV)
93 bvList.append(aisstring.encode(params['aStr'],30))
94 bvList.append(binary.setBitVectorSize(BitVector(intVal=int((Decimal(params['anUDecimal'])*Decimal('10')))),16))
95 bvList.append(binary.bvFromSignedInt(int(Decimal(params['aDecimal'])*Decimal('10')),16))
96 bvList.append(binary.float2bitvec(params['aFloat']))
97
98 return binary.joinBV(bvList)
99
100 -def decode(bv, validate=False):
101 '''Unpack a alltypesmsg message
102
103 Fields in params:
104 - dac(uint): Designated Area Code (field automatically set to "366")
105 - reqDecimal(decimal): required decimal value... FIX: scale or no? (field automatically set to "122")
106 - unavail_uint(uint): Unavailable unsigned integer
107 - anUInt(uint): NO unavailable unsigned integer
108 - anInt(int): NO unavailable signed integer
109 - aBool(bool): Simple bool
110 - aStr(aisstr6): An ais string of 5 characters
111 - anUDecimal(udecimal): An unsigned decimal. Allow smaller numbers
112 - aDecimal(decimal): A decimal
113 - aFloat(float): An IEEE floating point number
114 @type bv: BitVector
115 @param bv: Bits defining a message
116 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
117 @rtype: dict
118 @return: params
119 '''
120
121
122
123
124 r = {}
125 r['dac']=366
126 r['reqDecimal']=122/Decimal('1')
127 r['unavail_uint']=int(bv[24:26])
128 r['anUInt']=int(bv[26:28])
129 r['anInt']=binary.signedIntFromBV(bv[28:31])
130 r['aBool']=bool(int(bv[31:32]))
131 r['aStr']=aisstring.decode(bv[32:62])
132 r['anUDecimal']=Decimal(int(bv[62:78]))/Decimal('10')
133 r['aDecimal']=Decimal(binary.signedIntFromBV(bv[78:94]))/Decimal('10')
134 r['aFloat']=binary.bitvec2float(bv[94:126])
135 return r
136
138 return 366
139
141 return 122/Decimal('1')
142
144 return int(bv[24:26])
145
147 return int(bv[26:28])
148
151
153 return bool(int(bv[31:32]))
154
157
159 return Decimal(int(bv[62:78]))/Decimal('10')
160
163
166
167
169 out.write("<h3>alltypesmsg<h3>\n")
170 out.write("<table border=\"1\">\n")
171 out.write("<tr bgcolor=\"orange\">\n")
172 out.write("<th align=\"left\">Field Name</th>\n")
173 out.write("<th align=\"left\">Type</th>\n")
174 out.write("<th align=\"left\">Value</th>\n")
175 out.write("<th align=\"left\">Value in Lookup Table</th>\n")
176 out.write("<th align=\"left\">Units</th>\n")
177 out.write("\n")
178 out.write("<tr>\n")
179 out.write("<td>dac</td>\n")
180 out.write("<td>uint</td>\n")
181 if 'dac' in params:
182 out.write(" <td>"+str(params['dac'])+"</td>\n")
183 out.write(" <td>"+str(params['dac'])+"</td>\n")
184 out.write("</tr>\n")
185 out.write("\n")
186 out.write("<tr>\n")
187 out.write("<td>reqDecimal</td>\n")
188 out.write("<td>decimal</td>\n")
189 if 'reqDecimal' in params:
190 out.write(" <td>"+str(params['reqDecimal'])+"</td>\n")
191 out.write(" <td>"+str(params['reqDecimal'])+"</td>\n")
192 out.write("</tr>\n")
193 out.write("\n")
194 out.write("<tr>\n")
195 out.write("<td>unavail_uint</td>\n")
196 out.write("<td>uint</td>\n")
197 if 'unavail_uint' in params:
198 out.write(" <td>"+str(params['unavail_uint'])+"</td>\n")
199 out.write(" <td>"+str(params['unavail_uint'])+"</td>\n")
200 out.write("</tr>\n")
201 out.write("\n")
202 out.write("<tr>\n")
203 out.write("<td>anUInt</td>\n")
204 out.write("<td>uint</td>\n")
205 if 'anUInt' in params:
206 out.write(" <td>"+str(params['anUInt'])+"</td>\n")
207 out.write(" <td>"+str(params['anUInt'])+"</td>\n")
208 out.write("</tr>\n")
209 out.write("\n")
210 out.write("<tr>\n")
211 out.write("<td>anInt</td>\n")
212 out.write("<td>int</td>\n")
213 if 'anInt' in params:
214 out.write(" <td>"+str(params['anInt'])+"</td>\n")
215 out.write(" <td>"+str(params['anInt'])+"</td>\n")
216 out.write("</tr>\n")
217 out.write("\n")
218 out.write("<tr>\n")
219 out.write("<td>aBool</td>\n")
220 out.write("<td>bool</td>\n")
221 if 'aBool' in params:
222 out.write(" <td>"+str(params['aBool'])+"</td>\n")
223 out.write(" <td>"+str(params['aBool'])+"</td>\n")
224 out.write("</tr>\n")
225 out.write("\n")
226 out.write("<tr>\n")
227 out.write("<td>aStr</td>\n")
228 out.write("<td>aisstr6</td>\n")
229 if 'aStr' in params:
230 out.write(" <td>"+str(params['aStr'])+"</td>\n")
231 out.write(" <td>"+str(params['aStr'])+"</td>\n")
232 out.write("</tr>\n")
233 out.write("\n")
234 out.write("<tr>\n")
235 out.write("<td>anUDecimal</td>\n")
236 out.write("<td>udecimal</td>\n")
237 if 'anUDecimal' in params:
238 out.write(" <td>"+str(params['anUDecimal'])+"</td>\n")
239 out.write(" <td>"+str(params['anUDecimal'])+"</td>\n")
240 out.write("</tr>\n")
241 out.write("\n")
242 out.write("<tr>\n")
243 out.write("<td>aDecimal</td>\n")
244 out.write("<td>decimal</td>\n")
245 if 'aDecimal' in params:
246 out.write(" <td>"+str(params['aDecimal'])+"</td>\n")
247 out.write(" <td>"+str(params['aDecimal'])+"</td>\n")
248 out.write("</tr>\n")
249 out.write("\n")
250 out.write("<tr>\n")
251 out.write("<td>aFloat</td>\n")
252 out.write("<td>float</td>\n")
253 if 'aFloat' in params:
254 out.write(" <td>"+str(params['aFloat'])+"</td>\n")
255 out.write(" <td>"+str(params['aFloat'])+"</td>\n")
256 out.write("</tr>\n")
257 out.write("</table>\n")
258
259 -def printFields(params, out=sys.stdout, format='std', fieldList=None):
260 '''Print a aFloat message to stdout.
261
262 Fields in params:
263 - dac(uint): Designated Area Code (field automatically set to "366")
264 - reqDecimal(decimal): required decimal value... FIX: scale or no? (field automatically set to "122")
265 - unavail_uint(uint): Unavailable unsigned integer
266 - anUInt(uint): NO unavailable unsigned integer
267 - anInt(int): NO unavailable signed integer
268 - aBool(bool): Simple bool
269 - aStr(aisstr6): An ais string of 5 characters
270 - anUDecimal(udecimal): An unsigned decimal. Allow smaller numbers
271 - aDecimal(decimal): A decimal
272 - aFloat(float): An IEEE floating point number
273 @param params: Dictionary of field names/values.
274 @param out: File like object to write to
275 @rtype: stdout
276 @return: text to out
277 '''
278
279 if 'std'==format:
280 out.write("aFloat:\n")
281 if 'dac' in params: out.write(" dac: "+str(params['dac'])+"\n")
282 if 'reqDecimal' in params: out.write(" reqDecimal: "+str(params['reqDecimal'])+"\n")
283 if 'unavail_uint' in params: out.write(" unavail_uint: "+str(params['unavail_uint'])+"\n")
284 if 'anUInt' in params: out.write(" anUInt: "+str(params['anUInt'])+"\n")
285 if 'anInt' in params: out.write(" anInt: "+str(params['anInt'])+"\n")
286 if 'aBool' in params: out.write(" aBool: "+str(params['aBool'])+"\n")
287 if 'aStr' in params: out.write(" aStr: "+str(params['aStr'])+"\n")
288 if 'anUDecimal' in params: out.write(" anUDecimal: "+str(params['anUDecimal'])+"\n")
289 if 'aDecimal' in params: out.write(" aDecimal: "+str(params['aDecimal'])+"\n")
290 if 'aFloat' in params: out.write(" aFloat: "+str(params['aFloat'])+"\n")
291 elif 'csv'==format:
292 if None == options.fieldList:
293 options.fieldList = fieldList
294 needComma = False;
295 for field in fieldList:
296 if needComma: out.write(',')
297 needComma = True
298 if field in params:
299 out.write(str(params[field]))
300
301 out.write("\n")
302 elif 'html'==format:
303 printHtml(params,out)
304 else:
305 print "ERROR: unknown format:",format
306 assert False
307
308 return
309
310
311
312
313
314
315 import unittest
317 '''Return a params file base on the testvalue tags.
318 @rtype: dict
319 @return: params based on testvalue tags
320 '''
321 params = {}
322 params['dac'] = 366
323 params['reqDecimal'] = Decimal('122')
324 params['unavail_uint'] = 2
325 params['anUInt'] = 1
326 params['anInt'] = -1
327 params['aBool'] = True
328 params['aStr'] = 'ASDF1'
329 params['anUDecimal'] = Decimal('9.5')
330 params['aDecimal'] = Decimal('-9.6')
331 params['aFloat'] = -1234.5678
332
333 return params
334
336 '''Use testvalue tag text from each type to build test case the alltypesmsg message'''
338
339 params = testParams()
340 bits = encode(params)
341 r = decode(bits)
342
343
344 self.failUnlessEqual(r['dac'],params['dac'])
345 self.failUnlessAlmostEqual(r['reqDecimal'],params['reqDecimal'],3)
346 self.failUnlessEqual(r['unavail_uint'],params['unavail_uint'])
347 self.failUnlessEqual(r['anUInt'],params['anUInt'])
348 self.failUnlessEqual(r['anInt'],params['anInt'])
349 self.failUnlessEqual(r['aBool'],params['aBool'])
350 self.failUnlessEqual(r['aStr'],params['aStr'])
351 self.failUnlessAlmostEqual(r['anUDecimal'],params['anUDecimal'],1)
352 self.failUnlessAlmostEqual(r['aDecimal'],params['aDecimal'],0)
353 self.failUnlessAlmostEqual(r['aFloat'],params['aFloat'],3)
354
356 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true',
357 help='decode a "alltypesmsg" AIS message')
358 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true',
359 help='encode a "alltypesmsg" AIS message')
360 parser.add_option('--unavail_uint-field', dest='unavail_uintField',default=3,metavar='uint',type='int'
361 ,help='Field parameter value [default: %default]')
362 parser.add_option('--anUInt-field', dest='anUIntField',metavar='uint',type='int'
363 ,help='Field parameter value [default: %default]')
364 parser.add_option('--anInt-field', dest='anIntField',metavar='int',type='int'
365 ,help='Field parameter value [default: %default]')
366 parser.add_option('--aBool-field', dest='aBoolField',metavar='bool',type='int'
367 ,help='Field parameter value [default: %default]')
368 parser.add_option('--aStr-field', dest='aStrField',metavar='aisstr6',type='string'
369 ,help='Field parameter value [default: %default]')
370 parser.add_option('--anUDecimal-field', dest='anUDecimalField',metavar='udecimal',type='string'
371 ,help='Field parameter value [default: %default]')
372 parser.add_option('--aDecimal-field', dest='aDecimalField',metavar='decimal',type='string'
373 ,help='Field parameter value [default: %default]')
374 parser.add_option('--aFloat-field', dest='aFloatField',metavar='float',type='float'
375 ,help='Field parameter value [default: %default]')
376
377
378 if __name__=='__main__':
379
380 from optparse import OptionParser
381 parser = OptionParser(usage="%prog [options]",
382 version="%prog "+__version__)
383
384 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true',
385 help='run the documentation tests')
386 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true',
387 help='run the unit tests')
388 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true',
389 help='Make the test output verbose')
390
391
392
393 typeChoices = ('binary','nmeapayload','nmea')
394 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType'
395 ,default='nmeapayload'
396 ,help='What kind of string to expect ('+', '.join(typeChoices)+') [default: %default]')
397
398
399 outputChoices = ('std','html','csv' )
400 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType'
401 ,default='std'
402 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]')
403
404 parser.add_option('-o','--output',dest='outputFileName',default=None,
405 help='Name of the python file to write [default: stdout]')
406
407 parser.add_option('-f','--fields',dest='fieldList',default=None, action='append',
408 choices=fieldList,
409 help='Which fields to include in the output. Currently only for csv output [default: all]')
410
411 parser.add_option('-p','--print-csv-field-list',dest='printCsvfieldList',default=False,action='store_true',
412 help='Print the field name for csv')
413
414 addMsgOptions(parser)
415
416 (options,args) = parser.parse_args()
417 success=True
418
419 if options.doctest:
420 import os; print os.path.basename(sys.argv[0]), 'doctests ...',
421 sys.argv= [sys.argv[0]]
422 if options.verbose: sys.argv.append('-v')
423 import doctest
424 numfail,numtests=doctest.testmod()
425 if numfail==0: print 'ok'
426 else:
427 print 'FAILED'
428 success=False
429
430 if not success: sys.exit('Something Failed')
431 del success
432
433 if options.unittest:
434 sys.argv = [sys.argv[0]]
435 if options.verbose: sys.argv.append('-v')
436 unittest.main()
437
438 outfile = sys.stdout
439 if None!=options.outputFileName:
440 outfile = file(options.outputFileName,'w')
441
442
443 if options.doEncode:
444
445 if None==options.unavail_uintField: parser.error("missing value for unavail_uintField")
446 if None==options.anUIntField: parser.error("missing value for anUIntField")
447 if None==options.anIntField: parser.error("missing value for anIntField")
448 if None==options.aBoolField: parser.error("missing value for aBoolField")
449 if None==options.aStrField: parser.error("missing value for aStrField")
450 if None==options.anUDecimalField: parser.error("missing value for anUDecimalField")
451 if None==options.aDecimalField: parser.error("missing value for aDecimalField")
452 if None==options.aFloatField: parser.error("missing value for aFloatField")
453 msgDict={
454 'dac': '366',
455 'reqDecimal': '122',
456 'unavail_uint': options.unavail_uintField,
457 'anUInt': options.anUIntField,
458 'anInt': options.anIntField,
459 'aBool': options.aBoolField,
460 'aStr': options.aStrField,
461 'anUDecimal': options.anUDecimalField,
462 'aDecimal': options.aDecimalField,
463 'aFloat': options.aFloatField,
464 }
465
466 bits = encode(msgDict)
467 if 'binary'==options.ioType: print str(bits)
468 elif 'nmeapayload'==options.ioType:
469
470 print "bitLen",len(bits)
471 bitLen=len(bits)
472 if bitLen%6!=0:
473 bits = bits + BitVector(size=(6 - (bitLen%6)))
474 print "result:",binary.bitvectoais6(bits)[0]
475
476
477
478 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability")
479 else: sys.exit('ERROR: unknown ioType. Help!')
480
481 if options.printCsvfieldList:
482
483 if None == options.fieldList: options.fieldList = fieldList
484 import StringIO
485 buf = StringIO.StringIO()
486 for field in options.fieldList:
487 buf.write(field+',')
488 result = buf.getvalue()
489 if result[-1] == ',': print result[:-1]
490 else: print result
491
492 if options.doDecode:
493 for msg in args:
494 bv = None
495 if 'binary' == options.ioType: bv = BitVector(bitstring=msg)
496 elif 'nmeapayload'== options.ioType: bv = binary.ais6tobitvec(msg)
497 elif 'nmea' == options.ioType: bv = binary.ais6tobitvec(msg.split(',')[5])
498 else: sys.exit('ERROR: unknown ioType. Help!')
499
500 printFields(decode(bv),out=outfile,format=options.outputType,fieldList=options.fieldList)
501