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

  1  #!/usr/bin/env python 
  2   
  3  __version__ = '$Revision: 4791 $'.split()[1] 
  4  __date__ = '$Date: 2007-02-16 $'.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  # FIX: check to see if these will be needed 
 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          'time_month', 
 51          'time_day', 
 52          'time_hour', 
 53          'time_min', 
 54          'stationid', 
 55          'pos_longitude', 
 56          'pos_latitude', 
 57          'flow', 
 58          'reserved', 
 59  ) 
 60   
 61  fieldListPostgres = ( 
 62          'time_month', 
 63          'time_day', 
 64          'time_hour', 
 65          'time_min', 
 66          'stationid', 
 67          'pos_longitude', 
 68          'pos_latitude', 
 69          'flow', 
 70          'reserved', 
 71  ) 
 72   
 73  toPgFields = { 
 74  } 
 75  ''' 
 76  Go to the Postgis field names from the straight field name 
 77  ''' 
 78   
 79  fromPgFields = { 
 80  } 
 81  ''' 
 82  Go from the Postgis field names to the straight field name 
 83  ''' 
 84   
 85  pgTypes = { 
 86  } 
 87  ''' 
 88  Lookup table for each postgis field name to get its type. 
 89  ''' 
 90   
91 -def encode(params, validate=False):
92 '''Create a sls_wind binary message payload to pack into an AIS Msg sls_wind. 93 94 Fields in params: 95 - time_month(uint): Time tag of measurement month 1..12 96 - time_day(uint): Time tag of measurement day of the month 1..31 97 - time_hour(uint): Time tag of measurement UTC hours 0..23 98 - time_min(uint): Time tag of measurement minutes 99 - stationid(aisstr6): Character identifier of the station 100 - pos_longitude(decimal): Location of measurement East West location 101 - pos_latitude(decimal): Location of measurement North South location 102 - flow(uint): Water flow 103 - reserved(uint): Reserved bits for future use (field automatically set to "0") 104 @param params: Dictionary of field names/values. Throws a ValueError exception if required is missing 105 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 106 @rtype: BitVector 107 @return: encoded binary message (for binary messages, this needs to be wrapped in a msg 8 108 @note: The returned bits may not be 6 bit aligned. It is up to you to pad out the bits. 109 ''' 110 111 bvList = [] 112 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_month']),4)) 113 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_day']),5)) 114 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_hour']),5)) 115 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['time_min']),6)) 116 if 'stationid' in params: 117 bvList.append(aisstring.encode(params['stationid'],42)) 118 else: 119 bvList.append(aisstring.encode('@@@@@@@',42)) 120 if 'pos_longitude' in params: 121 bvList.append(binary.bvFromSignedInt(int(Decimal(params['pos_longitude'])*Decimal('60000')),25)) 122 else: 123 bvList.append(binary.bvFromSignedInt(10860000,25)) 124 if 'pos_latitude' in params: 125 bvList.append(binary.bvFromSignedInt(int(Decimal(params['pos_latitude'])*Decimal('60000')),24)) 126 else: 127 bvList.append(binary.bvFromSignedInt(5460000,24)) 128 if 'flow' in params: 129 bvList.append(binary.setBitVectorSize(BitVector(intVal=params['flow']),10)) 130 else: 131 bvList.append(binary.setBitVectorSize(BitVector(intVal=16383),10)) 132 bvList.append(binary.setBitVectorSize(BitVector(intVal=0),19)) 133 134 return binary.joinBV(bvList)
135
136 -def decode(bv, validate=False):
137 '''Unpack a sls_wind message 138 139 Fields in params: 140 - time_month(uint): Time tag of measurement month 1..12 141 - time_day(uint): Time tag of measurement day of the month 1..31 142 - time_hour(uint): Time tag of measurement UTC hours 0..23 143 - time_min(uint): Time tag of measurement minutes 144 - stationid(aisstr6): Character identifier of the station 145 - pos_longitude(decimal): Location of measurement East West location 146 - pos_latitude(decimal): Location of measurement North South location 147 - flow(uint): Water flow 148 - reserved(uint): Reserved bits for future use (field automatically set to "0") 149 @type bv: BitVector 150 @param bv: Bits defining a message 151 @param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented. 152 @rtype: dict 153 @return: params 154 ''' 155 156 #Would be nice to check the bit count here.. 157 #if validate: 158 # assert (len(bv)==FIX: SOME NUMBER) 159 r = {} 160 r['time_month']=int(bv[0:4]) 161 r['time_day']=int(bv[4:9]) 162 r['time_hour']=int(bv[9:14]) 163 r['time_min']=int(bv[14:20]) 164 r['stationid']=aisstring.decode(bv[20:62]) 165 r['pos_longitude']=Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000') 166 r['pos_latitude']=Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000') 167 r['flow']=int(bv[111:121]) 168 r['reserved']=0 169 return r
170
171 -def decodetime_month(bv, validate=False):
172 return int(bv[0:4])
173
174 -def decodetime_day(bv, validate=False):
175 return int(bv[4:9])
176
177 -def decodetime_hour(bv, validate=False):
178 return int(bv[9:14])
179
180 -def decodetime_min(bv, validate=False):
181 return int(bv[14:20])
182
183 -def decodestationid(bv, validate=False):
184 return aisstring.decode(bv[20:62])
185
186 -def decodepos_longitude(bv, validate=False):
187 return Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000')
188
189 -def decodepos_latitude(bv, validate=False):
190 return Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000')
191
192 -def decodeflow(bv, validate=False):
193 return int(bv[111:121])
194
195 -def decodereserved(bv, validate=False):
196 return 0
197 198
199 -def printHtml(params, out=sys.stdout):
200 out.write("<h3>sls_wind<h3>\n") 201 out.write("<table border=\"1\">\n") 202 out.write("<tr bgcolor=\"orange\">\n") 203 out.write("<th align=\"left\">Field Name</th>\n") 204 out.write("<th align=\"left\">Type</th>\n") 205 out.write("<th align=\"left\">Value</th>\n") 206 out.write("<th align=\"left\">Value in Lookup Table</th>\n") 207 out.write("<th align=\"left\">Units</th>\n") 208 out.write("\n") 209 out.write("<tr>\n") 210 out.write("<td>time_month</td>\n") 211 out.write("<td>uint</td>\n") 212 if 'time_month' in params: 213 out.write(" <td>"+str(params['time_month'])+"</td>\n") 214 out.write(" <td>"+str(params['time_month'])+"</td>\n") 215 out.write("</tr>\n") 216 out.write("\n") 217 out.write("<tr>\n") 218 out.write("<td>time_day</td>\n") 219 out.write("<td>uint</td>\n") 220 if 'time_day' in params: 221 out.write(" <td>"+str(params['time_day'])+"</td>\n") 222 out.write(" <td>"+str(params['time_day'])+"</td>\n") 223 out.write("</tr>\n") 224 out.write("\n") 225 out.write("<tr>\n") 226 out.write("<td>time_hour</td>\n") 227 out.write("<td>uint</td>\n") 228 if 'time_hour' in params: 229 out.write(" <td>"+str(params['time_hour'])+"</td>\n") 230 out.write(" <td>"+str(params['time_hour'])+"</td>\n") 231 out.write("</tr>\n") 232 out.write("\n") 233 out.write("<tr>\n") 234 out.write("<td>time_min</td>\n") 235 out.write("<td>uint</td>\n") 236 if 'time_min' in params: 237 out.write(" <td>"+str(params['time_min'])+"</td>\n") 238 out.write(" <td>"+str(params['time_min'])+"</td>\n") 239 out.write("</tr>\n") 240 out.write("\n") 241 out.write("<tr>\n") 242 out.write("<td>stationid</td>\n") 243 out.write("<td>aisstr6</td>\n") 244 if 'stationid' in params: 245 out.write(" <td>"+str(params['stationid'])+"</td>\n") 246 out.write(" <td>"+str(params['stationid'])+"</td>\n") 247 out.write("</tr>\n") 248 out.write("\n") 249 out.write("<tr>\n") 250 out.write("<td>pos_longitude</td>\n") 251 out.write("<td>decimal</td>\n") 252 if 'pos_longitude' in params: 253 out.write(" <td>"+str(params['pos_longitude'])+"</td>\n") 254 out.write(" <td>"+str(params['pos_longitude'])+"</td>\n") 255 out.write("<td>degrees</td>\n") 256 out.write("</tr>\n") 257 out.write("\n") 258 out.write("<tr>\n") 259 out.write("<td>pos_latitude</td>\n") 260 out.write("<td>decimal</td>\n") 261 if 'pos_latitude' in params: 262 out.write(" <td>"+str(params['pos_latitude'])+"</td>\n") 263 out.write(" <td>"+str(params['pos_latitude'])+"</td>\n") 264 out.write("<td>degrees</td>\n") 265 out.write("</tr>\n") 266 out.write("\n") 267 out.write("<tr>\n") 268 out.write("<td>flow</td>\n") 269 out.write("<td>uint</td>\n") 270 if 'flow' in params: 271 out.write(" <td>"+str(params['flow'])+"</td>\n") 272 out.write(" <td>"+str(params['flow'])+"</td>\n") 273 out.write("<td>m^3/s</td>\n") 274 out.write("</tr>\n") 275 out.write("\n") 276 out.write("<tr>\n") 277 out.write("<td>reserved</td>\n") 278 out.write("<td>uint</td>\n") 279 if 'reserved' in params: 280 out.write(" <td>"+str(params['reserved'])+"</td>\n") 281 out.write(" <td>"+str(params['reserved'])+"</td>\n") 282 out.write("</tr>\n") 283 out.write("</table>\n")
284 285
286 -def printKml(params, out=sys.stdout):
287 '''KML (Keyhole Markup Language) for Google Earth, but without the header/footer''' 288 out.write("\ <Placemark>\n") 289 out.write("\t <name>"+str(params['stationid'])+"</name>\n") 290 out.write("\t\t<description>\n") 291 import StringIO 292 buf = StringIO.StringIO() 293 printHtml(params,buf) 294 import cgi 295 out.write(cgi.escape(buf.getvalue())) 296 out.write("\t\t</description>\n") 297 out.write("\t\t<styleUrl>#m_ylw-pushpin_copy0</styleUrl>\n") 298 out.write("\t\t<Point>\n") 299 out.write("\t\t\t<coordinates>") 300 out.write(str(params['pos_longitude'])) 301 out.write(',') 302 out.write(str(params['pos_latitude'])) 303 out.write(",0</coordinates>\n") 304 out.write("\t\t</Point>\n") 305 out.write("\t</Placemark>\n")
306
307 -def printFields(params, out=sys.stdout, format='std', fieldList=None, dbType='postgres'):
308 '''Print a reserved message to stdout. 309 310 Fields in params: 311 - time_month(uint): Time tag of measurement month 1..12 312 - time_day(uint): Time tag of measurement day of the month 1..31 313 - time_hour(uint): Time tag of measurement UTC hours 0..23 314 - time_min(uint): Time tag of measurement minutes 315 - stationid(aisstr6): Character identifier of the station 316 - pos_longitude(decimal): Location of measurement East West location 317 - pos_latitude(decimal): Location of measurement North South location 318 - flow(uint): Water flow 319 - reserved(uint): Reserved bits for future use (field automatically set to "0") 320 @param params: Dictionary of field names/values. 321 @param out: File like object to write to 322 @rtype: stdout 323 @return: text to out 324 ''' 325 326 if 'std'==format: 327 out.write("reserved:\n") 328 if 'time_month' in params: out.write(" time_month: "+str(params['time_month'])+"\n") 329 if 'time_day' in params: out.write(" time_day: "+str(params['time_day'])+"\n") 330 if 'time_hour' in params: out.write(" time_hour: "+str(params['time_hour'])+"\n") 331 if 'time_min' in params: out.write(" time_min: "+str(params['time_min'])+"\n") 332 if 'stationid' in params: out.write(" stationid: "+str(params['stationid'])+"\n") 333 if 'pos_longitude' in params: out.write(" pos_longitude: "+str(params['pos_longitude'])+"\n") 334 if 'pos_latitude' in params: out.write(" pos_latitude: "+str(params['pos_latitude'])+"\n") 335 if 'flow' in params: out.write(" flow: "+str(params['flow'])+"\n") 336 if 'reserved' in params: out.write(" reserved: "+str(params['reserved'])+"\n") 337 elif 'csv'==format: 338 if None == options.fieldList: 339 options.fieldList = fieldList 340 needComma = False; 341 for field in fieldList: 342 if needComma: out.write(',') 343 needComma = True 344 if field in params: 345 out.write(str(params[field])) 346 # else: leave it empty 347 out.write("\n") 348 elif 'html'==format: 349 printHtml(params,out) 350 elif 'sql'==format: 351 sqlInsertStr(params,out,dbType=dbType) 352 elif 'kml'==format: 353 printKml(params,out) 354 elif 'kml-full'==format: 355 out.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n") 356 out.write("<kml xmlns=\"http://earth.google.com/kml/2.1\">\n") 357 out.write("<Document>\n") 358 out.write(" <name>sls_wind</name>\n") 359 printKml(params,out) 360 out.write("</Document>\n") 361 out.write("</kml>\n") 362 else: 363 print "ERROR: unknown format:",format 364 assert False 365 366 return # Nothing to return
367 368 ###################################################################### 369 # SQL SUPPORT 370 ###################################################################### 371
372 -def sqlCreateStr(outfile=sys.stdout, fields=None, extraFields=None 373 ,addCoastGuardFields=True 374 ,dbType='postgres' 375 ):
376 ''' 377 Return the SQL CREATE command for this message type 378 @param outfile: file like object to print to. 379 @param fields: which fields to put in the create. Defaults to all. 380 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields 381 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format 382 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres') 383 @type addCoastGuardFields: bool 384 @return: sql create string 385 @rtype: str 386 387 @see: sqlCreate 388 ''' 389 outfile.write(str(sqlCreate(fields,extraFields,addCoastGuardFields,dbType=dbType)))
390
391 -def sqlCreate(fields=None, extraFields=None, addCoastGuardFields=True, dbType='postgres'):
392 ''' 393 Return the sqlhelp object to create the table. 394 395 @param fields: which fields to put in the create. Defaults to all. 396 @param extraFields: A sequence of tuples containing (name,sql type) for additional fields 397 @param addCoastGuardFields: Add the extra fields that come after the NMEA check some from the USCG N-AIS format 398 @type addCoastGuardFields: bool 399 @param dbType: Which flavor of database we are using so that the create is tailored ('sqlite' or 'postgres') 400 @return: An object that can be used to generate a return 401 @rtype: sqlhelp.create 402 ''' 403 if None == fields: fields = fieldList 404 import sqlhelp 405 c = sqlhelp.create('sls_wind',dbType=dbType) 406 c.addPrimaryKey() 407 if 'time_month' in fields: c.addInt ('time_month') 408 if 'time_day' in fields: c.addInt ('time_day') 409 if 'time_hour' in fields: c.addInt ('time_hour') 410 if 'time_min' in fields: c.addInt ('time_min') 411 if 'stationid' in fields: c.addVarChar('stationid',7) 412 if 'pos_longitude' in fields: c.addDecimal('pos_longitude',7,4) 413 if 'pos_latitude' in fields: c.addDecimal('pos_latitude',7,4) 414 if 'flow' in fields: c.addInt ('flow') 415 if 'reserved' in fields: c.addInt ('reserved') 416 417 if addCoastGuardFields: 418 # c.addInt('cg_rssi') # Relative signal strength indicator 419 # c.addInt('cg_d') # dBm receive strength 420 # c.addInt('cg_T') # Receive timestamp from the AIS equipment 421 # c.addInt('cg_S') # Slot received in 422 # c.addVarChar('cg_x',10) # Idonno 423 c.addVarChar('cg_r',15) # Receiver station ID - should usually be an MMSI, but sometimes is a string 424 c.addInt('cg_sec') # UTC seconds since the epoch 425 426 c.addTimestamp('cg_timestamp') # UTC decoded cg_sec - not actually in the data stream 427 428 return c
429
430 -def sqlInsertStr(params, outfile=sys.stdout, extraParams=None, dbType='postgres'):
431 ''' 432 Return the SQL INSERT command for this message type 433 @param params: dictionary of values keyed by field name 434 @param outfile: file like object to print to. 435 @param extraParams: A sequence of tuples containing (name,sql type) for additional fields 436 @return: sql create string 437 @rtype: str 438 439 @see: sqlCreate 440 ''' 441 outfile.write(str(sqlInsert(params,extraParams,dbType=dbType)))
442 443
444 -def sqlInsert(params,extraParams=None,dbType='postgres'):
445 ''' 446 Give the SQL INSERT statement 447 @param params: dict keyed by field name of values 448 @param extraParams: any extra fields that you have created beyond the normal ais message fields 449 @rtype: sqlhelp.insert 450 @return: insert class instance 451 @todo: allow optional type checking of params? 452 @warning: this will take invalid keys happily and do what??? 453 ''' 454 import sqlhelp 455 i = sqlhelp.insert('sls_wind',dbType=dbType) 456 457 if dbType=='postgres': 458 finished = [] 459 for key in params: 460 if key in finished: 461 #print 'already did key',key 462 continue 463 464 if key not in toPgFields and key not in fromPgFields: 465 if type(params[key])==Decimal: i.add(key,float(params[key])) 466 else: i.add(key,params[key]) 467 else: 468 if key in fromPgFields: 469 val = params[key] 470 # Had better be a WKT type like POINT(-88.1 30.321) 471 i.addPostGIS(key,val) 472 finished.append(key) 473 else: 474 # Need to construct the type. 475 pgName = toPgFields[key] 476 #valStr='GeomFromText(\''+pgTypes[pgName]+'(' 477 valStr=pgTypes[pgName]+'(' 478 vals = [] 479 for nonPgKey in fromPgFields[pgName]: 480 vals.append(str(params[nonPgKey])) 481 finished.append(nonPgKey) 482 valStr+=' '.join(vals)+')' 483 i.addPostGIS(pgName,valStr) 484 else: 485 for key in params: 486 if type(params[key])==Decimal: i.add(key,float(params[key])) 487 else: i.add(key,params[key]) 488 489 if None != extraParams: 490 for key in extraParams: 491 i.add(key,extraParams[key]) 492 493 return i
494 495 496 ###################################################################### 497 # UNIT TESTING 498 ###################################################################### 499 import unittest
500 -def testParams():
501 '''Return a params file base on the testvalue tags. 502 @rtype: dict 503 @return: params based on testvalue tags 504 ''' 505 params = {} 506 params['time_month'] = 2 507 params['time_day'] = 28 508 params['time_hour'] = 23 509 params['time_min'] = 45 510 params['stationid'] = 'A345678' 511 params['pos_longitude'] = Decimal('-122.16328') 512 params['pos_latitude'] = Decimal('37.42446') 513 params['flow'] = 43 514 params['reserved'] = 0 515 516 return params
517
518 -class Testsls_wind(unittest.TestCase):
519 '''Use testvalue tag text from each type to build test case the sls_wind message'''
520 - def testEncodeDecode(self):
521 522 params = testParams() 523 bits = encode(params) 524 r = decode(bits) 525 526 # Check that each parameter came through ok. 527 self.failUnlessEqual(r['time_month'],params['time_month']) 528 self.failUnlessEqual(r['time_day'],params['time_day']) 529 self.failUnlessEqual(r['time_hour'],params['time_hour']) 530 self.failUnlessEqual(r['time_min'],params['time_min']) 531 self.failUnlessEqual(r['stationid'],params['stationid']) 532 self.failUnlessAlmostEqual(r['pos_longitude'],params['pos_longitude'],4) 533 self.failUnlessAlmostEqual(r['pos_latitude'],params['pos_latitude'],4) 534 self.failUnlessEqual(r['flow'],params['flow']) 535 self.failUnlessEqual(r['reserved'],params['reserved'])
536
537 -def addMsgOptions(parser):
538 parser.add_option('-d','--decode',dest='doDecode',default=False,action='store_true', 539 help='decode a "sls_wind" AIS message') 540 parser.add_option('-e','--encode',dest='doEncode',default=False,action='store_true', 541 help='encode a "sls_wind" AIS message') 542 parser.add_option('--time_month-field', dest='time_monthField',metavar='uint',type='int' 543 ,help='Field parameter value [default: %default]') 544 parser.add_option('--time_day-field', dest='time_dayField',metavar='uint',type='int' 545 ,help='Field parameter value [default: %default]') 546 parser.add_option('--time_hour-field', dest='time_hourField',metavar='uint',type='int' 547 ,help='Field parameter value [default: %default]') 548 parser.add_option('--time_min-field', dest='time_minField',metavar='uint',type='int' 549 ,help='Field parameter value [default: %default]') 550 parser.add_option('--stationid-field', dest='stationidField',default='@@@@@@@',metavar='aisstr6',type='string' 551 ,help='Field parameter value [default: %default]') 552 parser.add_option('--pos_longitude-field', dest='pos_longitudeField',default=Decimal('181'),metavar='decimal',type='string' 553 ,help='Field parameter value [default: %default]') 554 parser.add_option('--pos_latitude-field', dest='pos_latitudeField',default=Decimal('91'),metavar='decimal',type='string' 555 ,help='Field parameter value [default: %default]') 556 parser.add_option('--flow-field', dest='flowField',default=16383,metavar='uint',type='int' 557 ,help='Field parameter value [default: %default]')
558 559 ############################################################ 560 if __name__=='__main__': 561 562 from optparse import OptionParser 563 parser = OptionParser(usage="%prog [options]", 564 version="%prog "+__version__) 565 566 parser.add_option('--doc-test',dest='doctest',default=False,action='store_true', 567 help='run the documentation tests') 568 parser.add_option('--unit-test',dest='unittest',default=False,action='store_true', 569 help='run the unit tests') 570 parser.add_option('-v','--verbose',dest='verbose',default=False,action='store_true', 571 help='Make the test output verbose') 572 573 # FIX: remove nmea from binary messages. No way to build the whole packet? 574 # FIX: or build the surrounding msg 8 for a broadcast? 575 typeChoices = ('binary','nmeapayload','nmea') # FIX: what about a USCG type message? 576 parser.add_option('-t','--type',choices=typeChoices,type='choice',dest='ioType' 577 ,default='nmeapayload' 578 ,help='What kind of string to write for encoding ('+', '.join(typeChoices)+') [default: %default]') 579 580 581 outputChoices = ('std','html','csv','sql' , 'kml','kml-full') 582 parser.add_option('-T','--output-type',choices=outputChoices,type='choice',dest='outputType' 583 ,default='std' 584 ,help='What kind of string to output ('+', '.join(outputChoices)+') [default: %default]') 585 586 parser.add_option('-o','--output',dest='outputFileName',default=None, 587 help='Name of the python file to write [default: stdout]') 588 589 parser.add_option('-f','--fields',dest='fieldList',default=None, action='append', 590 choices=fieldList, 591 help='Which fields to include in the output. Currently only for csv output [default: all]') 592 593 parser.add_option('-p','--print-csv-field-list',dest='printCsvfieldList',default=False,action='store_true', 594 help='Print the field name for csv') 595 596 parser.add_option('-c','--sql-create',dest='sqlCreate',default=False,action='store_true', 597 help='Print out an sql create command for the table.') 598 599 dbChoices = ('sqlite','postgres') 600 parser.add_option('-D','--db-type',dest='dbType',default='postgres' 601 ,choices=dbChoices,type='choice' 602 ,help='What kind of database ('+', '.join(dbChoices)+') [default: %default]') 603 604 addMsgOptions(parser) 605 606 (options,args) = parser.parse_args() 607 success=True 608 609 if options.doctest: 610 import os; print os.path.basename(sys.argv[0]), 'doctests ...', 611 sys.argv= [sys.argv[0]] 612 if options.verbose: sys.argv.append('-v') 613 import doctest 614 numfail,numtests=doctest.testmod() 615 if numfail==0: print 'ok' 616 else: 617 print 'FAILED' 618 success=False 619 620 if not success: sys.exit('Something Failed') 621 del success # Hide success from epydoc 622 623 if options.unittest: 624 sys.argv = [sys.argv[0]] 625 if options.verbose: sys.argv.append('-v') 626 unittest.main() 627 628 outfile = sys.stdout 629 if None!=options.outputFileName: 630 outfile = file(options.outputFileName,'w') 631 632 633 if options.doEncode: 634 # First make sure all non required options are specified 635 if None==options.time_monthField: parser.error("missing value for time_monthField") 636 if None==options.time_dayField: parser.error("missing value for time_dayField") 637 if None==options.time_hourField: parser.error("missing value for time_hourField") 638 if None==options.time_minField: parser.error("missing value for time_minField") 639 if None==options.stationidField: parser.error("missing value for stationidField") 640 if None==options.pos_longitudeField: parser.error("missing value for pos_longitudeField") 641 if None==options.pos_latitudeField: parser.error("missing value for pos_latitudeField") 642 if None==options.flowField: parser.error("missing value for flowField") 643 msgDict={ 644 'time_month': options.time_monthField, 645 'time_day': options.time_dayField, 646 'time_hour': options.time_hourField, 647 'time_min': options.time_minField, 648 'stationid': options.stationidField, 649 'pos_longitude': options.pos_longitudeField, 650 'pos_latitude': options.pos_latitudeField, 651 'flow': options.flowField, 652 'reserved': '0', 653 } 654 655 bits = encode(msgDict) 656 if 'binary'==options.ioType: print str(bits) 657 elif 'nmeapayload'==options.ioType: 658 # FIX: figure out if this might be necessary at compile time 659 print "bitLen",len(bits) 660 bitLen=len(bits) 661 if bitLen%6!=0: 662 bits = bits + BitVector(size=(6 - (bitLen%6))) # Pad out to multiple of 6 663 print "result:",binary.bitvectoais6(bits)[0] 664 665 666 # FIX: Do not emit this option for the binary message payloads. Does not make sense. 667 elif 'nmea'==options.ioType: sys.exit("FIX: need to implement this capability") 668 else: sys.exit('ERROR: unknown ioType. Help!') 669 670 671 if options.sqlCreate: 672 sqlCreateStr(outfile,options.fieldList,dbType=options.dbType) 673 674 if options.printCsvfieldList: 675 # Make a csv separated list of fields that will be displayed for csv 676 if None == options.fieldList: options.fieldList = fieldList 677 import StringIO 678 buf = StringIO.StringIO() 679 for field in options.fieldList: 680 buf.write(field+',') 681 result = buf.getvalue() 682 if result[-1] == ',': print result[:-1] 683 else: print result 684 685 if options.doDecode: 686 for msg in args: 687 bv = None 688 689 if msg[0] in ('$','!') and msg[3:6] in ('VDM','VDO'): 690 # Found nmea 691 # FIX: do checksum 692 bv = binary.ais6tobitvec(msg.split(',')[5]) 693 else: # either binary or nmeapayload... expect mostly nmeapayloads 694 # assumes that an all 0 and 1 string can not be a nmeapayload 695 binaryMsg=True 696 for c in msg: 697 if c not in ('0','1'): 698 binaryMsg=False 699 break 700 if binaryMsg: 701 bv = BitVector(bitstring=msg) 702 else: # nmeapayload 703 bv = binary.ais6tobitvec(msg) 704 705 printFields(decode(bv) 706 ,out=outfile 707 ,format=options.outputType 708 ,fieldList=options.fieldList 709 ,dbType=options.dbType 710 ) 711