app/file_operation.h

   1 #ifndef FILE_OPERATION_H
   2 #define FILE_OPERATION_H
   3 #include <QObject>
   4 #include <QString>
   5 #include <QFile>
   6 #include <QFile>
   7 #include <QJsonObject>
   8 #include <QJsonDocument>
   9
  10 /******************************************************
  11  * Write access token of mapbox in /etc/mapAccessToken
  12  ******************************************************/
  13 #define MAP_ACCESS_TOKEN_FILEPATH "/etc/mapAccessToken"
  14
  15 class File_Operation: public QObject{
  16
  17     Q_OBJECT
  18 public:
  19     Q_INVOKABLE QString getMapAccessToken() {
  20     #if 0
  21         char buf[512];
  22         QString mapAccessToken = "";
  23
  24         FILE* filep = fopen(qPrintable(MAP_ACCESS_TOKEN_FILEPATH), "r");
  25         if (!filep) {
  26             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  27             return mapAccessToken;
  28         }
  29         if (!fgets(buf, 512, filep)) {
  30             fprintf(stderr,"Failed to read mapAccessToken from mapAccessToken file \"%s\"", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  31             fclose(filep);
  32             return mapAccessToken;
  33         }
  34         if (strlen(buf) > 0 && buf[strlen(buf)-1] == '\n') {
  35             buf[strlen(buf)-1] = '\0';
  36         }
  37         mapAccessToken = QString(buf);
  38
  39         fclose(filep);
  40
  41         return mapAccessToken;
  42     #else
  43         QString mapAccessToken = "";
  44         QFile file(MAP_ACCESS_TOKEN_FILEPATH);
  45         if (!file.open(QIODevice::ReadOnly)){
  46             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  47             return mapAccessToken;
  48         }
  49         QByteArray data = file.readAll();
  50         QJsonDocument jsonDoc(QJsonDocument::fromJson(data));
  51         QJsonObject jsonObj(jsonDoc.object());
  52         if(jsonObj.contains("mapAccessToken")){
  53                 mapAccessToken = jsonObj["mapAccessToken"].toString();
  54         }else{
  55                 fprintf(stderr,"Failed to find mapAccessToken data \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  56         }
  57
  58         file.close();
  59         return mapAccessToken;
  60     #endif
  61     }
  62
  63     Q_INVOKABLE double getSpeed() {
  64         double speed = 60;      // km/h
  65         QFile file(MAP_ACCESS_TOKEN_FILEPATH);
  66         if (!file.open(QIODevice::ReadOnly)){
  67             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  68             return speed;
  69         }
  70         QByteArray data = file.readAll();
  71         QJsonDocument jsonDoc(QJsonDocument::fromJson(data));
  72         QJsonObject jsonObj(jsonDoc.object());
  73         if(jsonObj.contains("speed")){
  74                 speed = jsonObj["speed"].toDouble();
  75         }else{
  76                 fprintf(stderr,"Failed to find speed data \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  77         }
  78
  79         file.close();
  80         return speed;
  81     }
  82
  83     Q_INVOKABLE int getInterval() {
  84         int interval = 15;      // ms
  85         QFile file(MAP_ACCESS_TOKEN_FILEPATH);
  86         if (!file.open(QIODevice::ReadOnly)){
  87             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  88             return interval;
  89         }
  90         QByteArray data = file.readAll();
  91         QJsonDocument jsonDoc(QJsonDocument::fromJson(data));
  92         QJsonObject jsonObj(jsonDoc.object());
  93         if(jsonObj.contains("interval")){
  94                 interval = (int)jsonObj["interval"].toDouble();
  95         }else{
  96                 fprintf(stderr,"Failed to find interval data \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
  97         }
  98
  99         file.close();
 100         return interval;
 101     }
 102
 103     Q_INVOKABLE double getLatitude() {
 104         double latitude = 36.136261;
 105         QFile file(MAP_ACCESS_TOKEN_FILEPATH);
 106         if (!file.open(QIODevice::ReadOnly)){
 107             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
 108             return latitude;
 109         }
 110         QByteArray data = file.readAll();
 111         QJsonDocument jsonDoc(QJsonDocument::fromJson(data));
 112         QJsonObject jsonObj(jsonDoc.object());
 113         if(jsonObj.contains("latitude")){
 114                 latitude = jsonObj["latitude"].toDouble();
 115         }else{
 116                 fprintf(stderr,"Failed to find latitude data \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
 117         }
 118
 119         file.close();
 120         return latitude;
 121     }
 122
 123      Q_INVOKABLE double getLongitude() {
 124         double longitute = -115.151254;
 125         QFile file(MAP_ACCESS_TOKEN_FILEPATH);
 126         if (!file.open(QIODevice::ReadOnly)){
 127             fprintf(stderr,"Failed to open mapAccessToken file \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
 128             return longitute;
 129         }
 130         QByteArray data = file.readAll();
 131         QJsonDocument jsonDoc(QJsonDocument::fromJson(data));
 132         QJsonObject jsonObj(jsonDoc.object());
 133         if(jsonObj.contains("longitute")){
 134                 longitute = jsonObj["longitute"].toDouble();
 135         }else{
 136                 fprintf(stderr,"Failed to find longitute data \"%s\": %m", qPrintable(MAP_ACCESS_TOKEN_FILEPATH));
 137         }
 138
 139         file.close();
 140         return longitute;
 141     }
 142 };
 143
 144 #endif // FILE_OPERATION_H