153 lines
2.6 KiB
C++
153 lines
2.6 KiB
C++
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#include "config.hpp"
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#include <iostream>
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#include <fstream>
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#include <algorithm>
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#include "fortran.hpp"
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using namespace std;
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using namespace CosmoTool;
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UnformattedRead::UnformattedRead(const string& fname)
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throw()
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{
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f = new ifstream(fname.c_str());
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swapOrdering = false;
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cSize = Check_32bits;
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checkPointRef = checkPointAccum = 0;
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}
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UnformattedRead::UnformattedRead(const char *fname)
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throw()
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{
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f = new ifstream(fname);
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swapOrdering = false;
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cSize = Check_32bits;
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checkPointRef = checkPointAccum = 0;
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}
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UnformattedRead::~UnformattedRead()
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{
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delete f;
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}
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// Todo implement primitive description
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void UnformattedRead::setOrdering(Ordering o)
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{
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if (o == LittleEndian)
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{
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}
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}
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void UnformattedRead::setCheckpointSize(CheckpointSize cs)
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{
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cSize = cs;
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}
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void UnformattedRead::beginCheckpoint()
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throw (InvalidUnformattedAccess,EndOfFileException)
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{
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if (checkPointAccum != 0)
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throw InvalidUnformattedAccess();
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checkPointRef = (cSize == Check_32bits) ? 4 : 8;
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checkPointAccum = 0;
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checkPointRef = (cSize == Check_32bits) ? readInt32() : readInt64();
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checkPointAccum = 0;
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if (f->eof())
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throw EndOfFileException();
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}
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void UnformattedRead::endCheckpoint()
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throw (InvalidUnformattedAccess)
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{
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if (checkPointRef != checkPointAccum)
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throw InvalidUnformattedAccess();
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int64_t oldCheckPoint = checkPointRef;
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checkPointRef = (cSize == Check_32bits) ? 4 : 8;
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checkPointAccum = 0;
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checkPointRef = (cSize == Check_32bits) ? readInt32() : readInt64();
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if (oldCheckPoint != checkPointRef)
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throw InvalidUnformattedAccess();
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checkPointAccum = checkPointRef = 0;
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}
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void UnformattedRead::readOrderedBuffer(void *buffer, int size)
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throw (InvalidUnformattedAccess)
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{
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if ((checkPointAccum+size) > checkPointRef)
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throw InvalidUnformattedAccess();
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f->read((char *)buffer, size);
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if (swapOrdering)
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{
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char *cb = (char *)buffer;
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for (int i = 0; i < size/2; i++)
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swap(cb[i], cb[size-i-1]);
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}
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checkPointAccum += size;
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}
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double UnformattedRead::readReal64()
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throw (InvalidUnformattedAccess)
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{
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union
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{
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char b[8];
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double d;
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} a;
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readOrderedBuffer(&a, 8);
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return a.d;
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}
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float UnformattedRead::readReal32()
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throw (InvalidUnformattedAccess)
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{
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union
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{
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char b[4];
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float f;
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} a;
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readOrderedBuffer(&a, 4);
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return a.f;
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}
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int32_t UnformattedRead::readInt32()
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throw (InvalidUnformattedAccess)
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{
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union
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{
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char b[4];
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int32_t i;
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} a;
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readOrderedBuffer(&a, 4);
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return a.i;
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}
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int64_t UnformattedRead::readInt64()
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throw (InvalidUnformattedAccess)
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{
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union
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{
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char b[8];
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int64_t i;
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} a;
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readOrderedBuffer(&a, 8);
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return a.i;
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}
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