hysplitcdump.i.hh 8.49 KB
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#include <cstdio>
#include <cmath>
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#include <string>
#include "radixbug/bug.hh"
#include "radixio/eafstream.hh"
#include "radixio/hysplitcdump.hh"
namespace radix
{

template<typename data_type>
HysplitCDump<data_type>::HysplitCDump(data_type container)
{
    mData = container;
}

template<typename data_type>
bool HysplitCDump<data_type>::read_from(const std::string& file)
{
    bool result = false;
    eafstream fstr(file.c_str()
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                   , std::ios::in | std::ios::binary);
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    if(fstr.is_open() == false)
    {
        return result;
    }
    // big endian
    fstr.setReverseBytes(true);
    // read fortran header
    fstr.readHeader();
    std::string id = fstr.readString(4);
    mData->setId(id);
    int packing, year, month, day, hour, forecastHour, numLocations;
    fstr >> year
            >> month
            >> day
            >> hour
            >> forecastHour
            >> numLocations
            >> packing;
    fstr.readFooter();
    mData->setDateTime(year, month, day, hour, forecastHour);

    float lat, lon, z;
    int minutes;
    // for the number of locations
    for( int i = 0; i < numLocations; ++i)
    {
        fstr.readHeader();
        fstr >> year
                >> month
                >> day
                >> hour
                >> lat
                >> lon
                >> z
                >> minutes;
        mData->addLocation(year, month, day, hour, lat, lon, z, minutes);
        fstr.readFooter();
    }

    int numLat, numLon;
    float deltaLat, deltaLon, cLat, cLon;
    fstr.readHeader();
    fstr >> numLat
            >> numLon
            >> deltaLat
            >> deltaLon
            >> cLat
            >> cLon;
    fstr.readFooter();
    mData->setNumLat(numLat);
    mData->setNumLon(numLon);
    mData->setDeltaLat(deltaLat);
    mData->setDeltaLon(deltaLon);
    mData->setCornerLat(cLat);
    mData->setCornerLon(cLon);

    fstr.readHeader();
    int numLevels;
    fstr >> numLevels;
    for(int i = 0; i < numLevels; ++i)
    {
        int level;
        fstr >> level;
        mData->addLevel(level);
    }
    fstr.readFooter();

    fstr.readHeader();
    int numPollutants;
    fstr >> numPollutants;
    for(int i = 0; i < numPollutants; ++i)
    {
        std::string pol;
        pol = fstr.readString(4);
        mData->addPollutant(pol);
    }
    fstr.readFooter();


    // infinite loop over observation times
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    int timeIndex = 0;
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    for(; fstr.good();)
    {
        fstr.readHeader();
        fstr >> year
                >> month
                >> day
                >> hour
                >> minutes
                >> forecastHour;
        fstr.readFooter();
        mData->addStartTime(year, month, day, hour, minutes, forecastHour);

        fstr.readHeader();
        fstr >> year
                >> month
                >> day
                >> hour
                >> minutes
                >> forecastHour;
        fstr.readFooter();
        mData->addEndTime(year, month, day, hour, minutes, forecastHour);

        for(int i = 0; i < numPollutants; ++i)
        {
            for(int j = 0; j < numLevels; ++j)
            {
                fstr.readHeader();
                std::string pollutant;
                int z;
                int nxyp;
                if(packing)
                {
                    pollutant = fstr.readString(4);
                    fstr >> z >> nxyp;
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                    mData->setNumNonZeroPoints(timeIndex,i,j,nxyp);
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                    for(int np = 0; np < nxyp; ++np)
                    {
                        short xi = fstr.readShort();
                        short yi = fstr.readShort();
                        float c = fstr.readFloat();
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                        mData->addPoint(timeIndex,i,j,np,xi,yi,c);
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                    }
                } // if packing is enabled
                fstr.readFooter();
                fstr.peek(); // peek ahead to check file integrity
            } // loop over num levels
        } // loop num pollutants
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        timeIndex++;
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    } // infinite loop over output times
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    result = true;
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    return result;
} // HysplitCDump::read_from

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template<typename data_type>
bool HysplitCDump<data_type>::write_to(const std::string& file) const
{
    bool result = false;
    eafstream fstr(file.c_str()
                   , std::ios::out | std::ios::binary);
    if(fstr.is_open() == false)
    {
        return result;
    }
    //big endian
    fstr.setReverseBytes(true);
    int record_length;

    std::string id = mData->id();
    {
        // force string to be only 4 characters
        char cid[5];
        sprintf(cid, "%4s", id.c_str());
        cid[4] = '\0'; // null terminate
        id = cid;
    }
    record_length = id.size() + sizeof(int)*7;
    int year, month, day, hour, forecastHour, minutes, numLocations, packing = 1;
    mData->dateTime(year, month, day, hour, forecastHour);
    numLocations = mData->numLocations();

    fstr.writeHeader(record_length);
    fstr << year << month << day << hour << forecastHour << numLocations << packing;
    fstr.writeFooter(record_length);

    float lat, lon, z;
    for(int i = 0; i < numLocations; ++i)
    {
        mData->location(i, year, month, day, hour, lat, lon, z, minutes);
        record_length = sizeof(int) * 5 + sizeof(float)*3;
        fstr.writeHeader(record_length);
        fstr << year << month << day << hour << lat << lon << z << minutes;
        fstr.writeFooter(record_length);
    }
    int numLat, numLon;
    float deltaLat, deltaLon, cLat, cLon;
    numLat = mData->numLat();
    numLon = mData->numLon();
    deltaLat = mData->deltaLat();
    deltaLon = mData->deltaLon();
    cLat = mData->cornerLat();
    cLon = mData->cornerLon();
    {
        // force string to be only 4 characters
        char cid[5];
        sprintf(cid, "%4s", id.c_str());
        cid[4] = '\0'; // null terminate
        id = cid;
    }
    record_length = sizeof(int)*2+sizeof(float)*4;
    fstr.writeHeader(record_length);
    fstr << numLat << numLon << deltaLat << deltaLon << cLat << cLon;
    fstr.writeFooter(record_length);

    int numLevels = mData->numLevels();
    record_length = int(sizeof(int))*numLevels;
    fstr.writeHeader(record_length);
    for(int i = 0; i < numLevels; ++i)
    {
        fstr << mData->level(i);
    }
    fstr.writeFooter(record_length);

    int numPollutants = mData->numPollutants();
    record_length = numPollutants*4;
    fstr.writeHeader(record_length);
    std::vector<std::string> local_pols;
    for(int i = 0; i < numPollutants; ++i)
    {
        std::string pol = mData->pollutant(i);
        // force string to be only 4 characters
        char cid[5];
        sprintf(cid, "%4s", pol.c_str());
        cid[4] = '\0'; // null terminate
        pol = cid;
        fstr.writeString(pol);
        local_pols.push_back(pol);
    }

    fstr.writeFooter(record_length);

    int numStartTimes = mData->numStartTimes();
    int numEndTimes = mData->numEndTimes();
    radix_insist(numStartTimes == numEndTimes
                 , "The number of start times did not match the number of end times.");
    for(int timeIndex = 0 ; timeIndex < numStartTimes; ++timeIndex)
    {
        mData->startTime(timeIndex, year, month, day, hour, minutes, forecastHour);
        record_length = sizeof(int)*6;
        fstr.writeHeader(record_length);
        fstr << year << month << day << hour << minutes << forecastHour;
        fstr.writeFooter(record_length);

        mData->endTime(timeIndex, year, month, day, hour, minutes, forecastHour);
        record_length = sizeof(int)*6;
        fstr.writeHeader(record_length);
        fstr << year << month << day << hour << minutes << forecastHour;
        fstr.writeFooter(record_length);

        for(int i = 0; i < numPollutants; ++i)
        {
            for(int j = 0; j < numLevels; ++j)
            {
                int level = mData->level(j);
                int nxyp = mData->numNonZeroPoints(timeIndex, i, j);
                record_length = 4 + int(sizeof(int)) * 2
                        + int(sizeof(short))*2*nxyp
                        + int(sizeof(float))*nxyp;
                fstr.writeHeader(record_length);
                fstr.writeString(local_pols[size_t(i)]);
                fstr << level << nxyp;
                for(int np = 0; np < nxyp; ++np)
                {
                    short xi, yi;
                    float c;
                    mData->point(timeIndex, i, j, np, xi, yi, c);
                    fstr << xi << yi << c;
                }
                fstr.writeFooter(record_length);
            }
        }
    }
    result = true;
    return result;
}

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} // namespace radix