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# Partially compatible AWIPS-II Thrift Binary Protocol |
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# SOFTWARE HISTORY |
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# Date Ticket# Engineer Description |
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# ------------ ---------- ----------- -------------------------- |
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# 11/11/09 chammack Initial Creation. |
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# 06/09/10 njensen Added float, list methods |
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# Apr 24, 2015 4425 nabowle Add F64List support. |
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import struct |
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import numpy |
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from thrift.protocol.TProtocol import * |
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from thrift.protocol.TBinaryProtocol import * |
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FLOAT = 64 |
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intList = numpy.dtype(numpy.int32).newbyteorder('>') |
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floatList = numpy.dtype(numpy.float32).newbyteorder('>') |
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longList = numpy.dtype(numpy.int64).newbyteorder('>') |
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shortList = numpy.dtype(numpy.int16).newbyteorder('>') |
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byteList = numpy.dtype(numpy.int8).newbyteorder('>') |
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doubleList = numpy.dtype(numpy.float64).newbyteorder('>') |
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View Code Duplication |
class SelfDescribingBinaryProtocol(TBinaryProtocol): |
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def readFieldBegin(self): |
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ftype = self.readByte() |
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if ftype == TType.STOP: |
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return None, ftype, 0 |
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name = self.readString() |
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fid = self.readI16() |
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return name, ftype, fid |
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def readStructBegin(self): |
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return self.readString() |
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def writeStructBegin(self, name): |
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self.writeString(name) |
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def writeFieldBegin(self, name, ftype, fid): |
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self.writeByte(ftype) |
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self.writeString(name) |
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self.writeI16(fid) |
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def readFloat(self): |
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d = self.readI32() |
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dAsBytes = struct.pack('i', d) |
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f = struct.unpack('f', dAsBytes) |
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return f[0] |
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def writeFloat(self, f): |
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dAsBytes = struct.pack('f', f) |
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i = struct.unpack('i', dAsBytes) |
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self.writeI32(i[0]) |
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def readI32List(self, sz): |
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buff = self.trans.readAll(4*sz) |
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val = numpy.frombuffer(buff, dtype=intList, count=sz) |
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return val |
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def readF32List(self, sz): |
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buff = self.trans.readAll(4*sz) |
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val = numpy.frombuffer(buff, dtype=floatList, count=sz) |
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return val |
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def readF64List(self, sz): |
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buff = self.trans.readAll(8*sz) |
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val = numpy.frombuffer(buff, dtype=doubleList, count=sz) |
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return val |
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def readI64List(self, sz): |
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buff = self.trans.readAll(8*sz) |
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val = numpy.frombuffer(buff, dtype=longList, count=sz) |
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return val |
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def readI16List(self, sz): |
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buff = self.trans.readAll(2*sz) |
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val = numpy.frombuffer(buff, dtype=shortList, count=sz) |
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return val |
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def readI8List(self, sz): |
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buff = self.trans.readAll(sz) |
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val = numpy.frombuffer(buff, dtype=byteList, count=sz) |
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return val |
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def writeI32List(self, buff): |
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b = numpy.asarray(buff, intList) |
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self.trans.write(numpy.getbuffer(b)) |
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def writeF32List(self, buff): |
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b = numpy.asarray(buff, floatList) |
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self.trans.write(numpy.getbuffer(b)) |
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def writeF64List(self, buff): |
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b = numpy.asarray(buff, doubleList) |
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self.trans.write(numpy.getbuffer(b)) |
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def writeI64List(self, buff): |
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b = numpy.asarray(buff, longList) |
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self.trans.write(numpy.getbuffer(b)) |
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def writeI16List(self, buff): |
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b = numpy.asarray(buff, shortList) |
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self.trans.write(numpy.getbuffer(b)) |
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def writeI8List(self, buff): |
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b = numpy.asarray(buff, byteList) |
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self.trans.write(numpy.getbuffer(b)) |
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