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'''
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Created on 23/01/2012
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@author: danielangelsuarezmunoz
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'''
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import numpy
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import os.path
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import glob
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import fnmatch
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import time
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import datetime
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from Header import *
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from Data import DataReader
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from Data import DataWriter
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class VoltageReader(DataReader):
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__idFile = 0
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__fp = 0
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__startDateTime = 0
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__endDateTime = 0
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__dataType = 0
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__sizeOfFileByHeader = 0
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__pathList = []
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filenameList = []
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__lastUTTime = 0
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__maxTimeStep = 5
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flagResetProcessing = 0
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__flagIsNewFile = 0
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noMoreFiles = 0
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online = 0
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filename = ''
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fileSize = 0
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firstHeaderSize = 0
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basicHeaderSize = 24
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basicHeaderObj = BasicHeader()
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systemHeaderObj = SystemHeader()
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radarControllerHeaderObj = RadarControllerHeader()
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processingHeaderObj = ProcessingHeader()
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__buffer = 0
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__buffer_id = 9999
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#m_Voltage= Voltage()
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def __init__(self):
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pass
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def __rdSystemHeader(self,fp=None):
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if fp == None:
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fp = self.__fp
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self.systemHeaderObj.read(fp)
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def __rdRadarControllerHeader(self,fp=None):
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if fp == None:
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fp = self.__fp
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self.radarControllerHeaderObj.read(fp)
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def __rdProcessingHeader(self,fp=None):
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if fp == None:
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fp = self.__fp
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self.processingHeaderObj.read(fp)
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def __searchFiles(self,path, startDateTime, endDateTime, set=None, expLabel = "", ext = "*.r"):
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startUtSeconds = time.mktime(startDateTime.timetuple())
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endUtSeconds = time.mktime(endDateTime.timetuple())
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startYear = startDateTime.timetuple().tm_year
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endYear = endDateTime.timetuple().tm_year
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startDoy = startDateTime.timetuple().tm_yday
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endDoy = endDateTime.timetuple().tm_yday
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rangeOfYears = range(startYear,endYear+1)
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listOfListDoys = []
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if startYear == endYear:
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doyList = range(startDoy,endDoy+1)
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else:
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for year in rangeOfYears:
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if (year == startYear):
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listOfListDoys.append(range(startDoy,365+1))
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elif (year == endYear):
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listOfListDoys.append(range(1,endDoy+1))
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else:
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listOfListDoys.append(range(1,365+1))
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doyList = []
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for list in listOfListDoys:
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doyList = doyList + list
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folders = []
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for thisPath in os.listdir(path):
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if os.path.isdir(os.path.join(path,thisPath)):
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#folders.append(os.path.join(path,thisPath))
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folders.append(thisPath)
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pathList = []
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dicOfPath = {}
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for year in rangeOfYears:
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for doy in doyList:
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tmp = fnmatch.filter(folders, 'D' + '%4.4d%3.3d' % (year,doy))
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if len(tmp) == 0:
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continue
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if expLabel == '':
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pathList.append(os.path.join(path,tmp[0]))
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dicOfPath.setdefault(os.path.join(path,tmp[0]))
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dicOfPath[os.path.join(path,tmp[0])] = []
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else:
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pathList.append(os.path.join(path,os.path.join(tmp[0],expLabel)))
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dicOfPath.setdefault(os.path.join(path,os.path.join(tmp[0],expLabel)))
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dicOfPath[os.path.join(path,os.path.join(tmp[0],expLabel))] = []
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filenameList = []
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for thisPath in pathList:
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fileList = glob.glob1(thisPath, ext)
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#dicOfPath[thisPath].append(fileList)
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fileList.sort()
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for file in fileList:
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filename = os.path.join(thisPath,file)
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if self.isThisFileinRange(filename, startUtSeconds, endUtSeconds):
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filenameList.append(filename)
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self.filenameList = filenameList
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return pathList, filenameList
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def isThisFileinRange(self, filename, startUTSeconds=None, endUTSeconds=None):
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try:
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fp = open(filename,'rb')
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except:
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raise IOError, "The file %s can't be opened" %(filename)
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if startUTSeconds==None:
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startUTSeconds = self.startUTCSeconds
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if endUTSeconds==None:
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endUTSeconds = self.endUTCSeconds
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basicHeaderObj = BasicHeader()
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if not(basicHeaderObj.read(fp)):
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return 0
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fp.close()
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if not ((startUTSeconds <= basicHeaderObj.utc) and (endUTSeconds >= basicHeaderObj.utc)):
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return 0
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return 1
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def __readBasicHeader(self, fp=None):
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if fp == None:
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fp = self.__fp
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self.basicHeaderObj.read(fp)
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def __readFirstHeader(self):
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self.__readBasicHeader()
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self.__rdSystemHeader()
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self.__rdRadarControllerHeader()
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self.__rdProcessingHeader()
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self.firstHeaderSize = self.basicHeaderObj.size
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data_type=int(numpy.log2((self.processingHeaderObj.processFlags & PROCFLAG.DATATYPE_MASK))-numpy.log2(PROCFLAG.DATATYPE_CHAR))
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if data_type == 0:
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tmp=numpy.dtype([('real','<i1'),('imag','<i1')])
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elif data_type == 1:
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tmp=numpy.dtype([('real','<i2'),('imag','<i2')])
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elif data_type == 2:
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tmp=numpy.dtype([('real','<i4'),('imag','<i4')])
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elif data_type == 3:
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tmp=numpy.dtype([('real','<i8'),('imag','<i8')])
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elif data_type == 4:
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tmp=numpy.dtype([('real','<f4'),('imag','<f4')])
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elif data_type == 5:
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tmp=numpy.dtype([('real','<f8'),('imag','<f8')])
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else:
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print 'no define data type'
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tmp = 0
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self.__dataType = tmp
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self.__sizeOfFileByHeader = self.processingHeaderObj.dataBlocksPerFile * self.processingHeaderObj.blockSize + self.firstHeaderSize + self.basicHeaderSize*(self.processingHeaderObj.dataBlocksPerFile - 1)
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def __setNextFileOnline(self):
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return 0
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def __setNextFileOffline(self):
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idFile = self.__idFile
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while(True):
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idFile += 1
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if not(idFile < len(self.filenameList)):
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self.noMoreFiles = 1
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return 0
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filename = self.filenameList[idFile]
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fileSize = os.path.getsize(filename)
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fp = open(filename,'rb')
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currentSize = fileSize - fp.tell()
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neededSize = self.processingHeaderObj.blockSize + self.firstHeaderSize
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if (currentSize < neededSize):
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continue
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break
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self.__flagIsNewFile = 1
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self.__idFile = idFile
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self.filename = filename
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self.fileSize = fileSize
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self.__fp = fp
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print 'Setting the file: %s'%self.filename
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return 1
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def __setNextFile(self):
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if self.online:
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return self.__setNextFileOnline()
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else:
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return self.__setNextFileOffline()
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def __setNewBlock(self):
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if self.__flagIsNewFile:
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return 1
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currentSize = self.fileSize - self.__fp.tell()
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neededSize = self.processingHeaderObj.blockSize + self.basicHeaderSize
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# Bloque Completo
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if (currentSize >= neededSize):
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self.__readBasicHeader()
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return 1
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if not(self.__setNextFile()):
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return 0
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self.__readFirstHeader()
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deltaTime = self.basicHeaderObj.utc - self.__lastUTTime # check this
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self.flagResetProcessing = 0
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if deltaTime > self.__maxTimeStep:
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self.flagResetProcessing = 1
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return 1
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def __readBlock(self):
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"""Lee el bloque de datos desde la posicion actual del puntero del archivo y
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actualiza todos los parametros relacionados al bloque de datos (data, time,
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etc). La data leida es almacenada en el buffer y el contador de datos leidos es
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seteado a 0
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"""
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pts2read = self.processingHeaderObj.profilesPerBlock*self.processingHeaderObj.numHeights*self.systemHeaderObj.numChannels
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data = numpy.fromfile(self.__fp,self.__dataType,pts2read)
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data = data.reshape((self.processingHeaderObj.profilesPerBlock, self.processingHeaderObj.numHeights, self.systemHeaderObj.numChannels))
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self.__flagIsNewFile = 0
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self.__buffer = data
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self.__buffer_id = 0
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def readNextBlock(self):
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if not(self.__setNewBlock()):
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return 0
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self.__readBlock()
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self.__lastUTTime = self.basicHeaderObj.utc
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return 1
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def __hasNotDataInBuffer(self):
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if self.__buffer_id >= self.processingHeaderObj.profilesPerBlock:
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return 1
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return 0
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def getData(self):
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"""Obtiene un unidad de datos del buffer de lectura y es copiada a la clase "Data"
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con todos los parametros asociados a este. cuando no hay datos en el buffer de
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lectura es necesario hacer una nueva lectura de los bloques de datos
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"__readBlock"
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"""
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self.flagResetProcessing = 0
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if self.__hasNotDataInBuffer():
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self.readNextBlock()
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if self.noMoreFiles == 1:
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print 'read finished'
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return None
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data = self.__buffer[self.__buffer_id,:,:]
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#time = timeblock + n*ipp
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#print self.__buffer_id
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self.__buffer_id += 1
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#call setData - to Data Object
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return data
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def setup(self, path, startDateTime, endDateTime, set=None, expLabel = "", ext = ".r", online = 0):
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if online == 0:
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pathList, filenameList = self.__searchFiles(path, startDateTime, endDateTime, set, expLabel, ext)
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if len(filenameList) == 0:
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print 'Do not exist files in range: %s - %s'%(startDateTime.ctime(), endDateTime.ctime())
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return 0
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# for thisFile in filenameList:
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# print thisFile
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self.__idFile = -1
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if not(self.__setNextFile()):
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print "No more files"
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return 0
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self.__readFirstHeader()
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self.startUTCSeconds = time.mktime(startDateTime.timetuple())
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self.endUTCSeconds = time.mktime(endDateTime.timetuple())
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self.startYear = startDateTime.timetuple().tm_year
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self.endYear = endDateTime.timetuple().tm_year
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self.startDoy = startDateTime.timetuple().tm_yday
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self.endDoy = endDateTime.timetuple().tm_yday
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#call fillHeaderValues() - to Data Object
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self.__pathList = pathList
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self.filenameList = filenameList
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self.online = online
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class VoltageWriter(DataWriter):
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def __init__(self):
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pass
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