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| 2 | /* -------------------------------------------------------------------------
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| 3 | * BKG NTRIP Client
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| 4 | * -------------------------------------------------------------------------
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| 5 | *
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| 6 | * Class: bncutils
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| 7 | *
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| 8 | * Purpose: Auxiliary Functions
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| 9 | *
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| 10 | * Author: L. Mervart
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| 11 | *
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| 12 | * Created: 30-Aug-2006
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| 13 | *
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| 14 | * Changes:
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| 15 | *
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| 16 | * -----------------------------------------------------------------------*/
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| 17 |
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| 18 | #include <iostream>
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| 19 | #include <ctime>
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| 20 |
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| 21 | #include <QRegExp>
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| 22 | #include <QStringList>
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| 23 |
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| 24 | #include "bncutils.h"
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| 25 |
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| 26 | using namespace std;
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| 27 |
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| 28 | void expandEnvVar(QString& str) {
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| 29 |
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| 30 | QRegExp rx("(\\$\\{.+\\})");
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| 31 |
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| 32 | if (rx.indexIn(str) != -1) {
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| 33 | QStringListIterator it(rx.capturedTexts());
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| 34 | if (it.hasNext()) {
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| 35 | QString rxStr = it.next();
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| 36 | QString envVar = rxStr.mid(2,rxStr.length()-3);
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| 37 | str.replace(rxStr, qgetenv(envVar.toAscii()));
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| 38 | }
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| 39 | }
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| 40 |
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| 41 | }
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| 42 |
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| 43 | QDateTime dateAndTimeFromGPSweek(int GPSWeek, double GPSWeeks) {
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| 44 |
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| 45 | static const QDate zeroEpoch(1980, 1, 6);
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| 46 |
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| 47 | QDate date(zeroEpoch);
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| 48 | QTime time(0,0,0,0);
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| 49 |
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| 50 | int weekDays = int(GPSWeeks) / 86400;
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| 51 | date = date.addDays( GPSWeek * 7 + weekDays );
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| 52 | time = time.addMSecs( int( (GPSWeeks - 86400 * weekDays) * 1e3 ) );
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| 53 |
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| 54 | return QDateTime(date,time);
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| 55 | }
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| 56 |
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| 57 | double MJD(int year, int month, double day) {
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| 58 | if( month <= 2 ) {
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| 59 | year = year - 1;
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| 60 | month = month + 12;
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| 61 | }
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| 62 | int ii = year/100;
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| 63 | int kk = 2 - ii + ii/4;
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| 64 | double mjd = (365.25*year - fmod( 365.25*year, 1.0 )) - 679006.0
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| 65 | + floor( 30.6001*(month + 1) ) + day + kk;
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| 66 | return mjd;
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| 67 | }
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| 68 |
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| 69 | void MJD_GPSWeeks(double mjd, int& week, double& sec) {
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| 70 | double deltat = mjd - 44244.0 ;
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| 71 | week = (long) floor(deltat/7.0);
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| 72 | sec = (deltat - (week)*7.0)*86400.0;
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| 73 | }
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| 74 |
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| 75 | void currentGPSWeeks(int& week, double& sec) {
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| 76 |
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| 77 | time_t ltime;
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| 78 | struct tm *gmt;
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| 79 |
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| 80 | time(<ime);
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| 81 | gmt = gmtime(<ime);
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| 82 |
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| 83 | double dayFrac = (( gmt->tm_sec / 60.0
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| 84 | + gmt->tm_min ) / 60.0
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| 85 | + gmt->tm_hour ) / 24.0;
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| 86 |
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| 87 | double mjd = MJD(1900+gmt->tm_year, gmt->tm_mon+1, gmt->tm_mday+dayFrac);
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| 88 |
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| 89 | MJD_GPSWeeks(mjd, week, sec);
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| 90 | }
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