jia_tan_diyic/handle/utils/cachefile.cpp

#include "cachefile.h"

#include <QFile>
#include "QDebug"

CacheFile::CacheFile()
{
    dir = QDir::home();
    if(!dir.exists("jxcCache")){
        dir.mkdir("jxcCache");
    }
    dir.cd("jxcCache");
}


bool CacheFile::writeFile(const QString & name, const QByteArray & data)
{
    QFile f(dir.absoluteFilePath(name));
    if(f.open(QFile::WriteOnly)){
        f.write(data);
        f.close();
    }
    return false;
}

QByteArray CacheFile::readFile(const QString & name)
{
    QByteArray dt;
    QFile f(dir.absoluteFilePath(name));
    if(f.open(QFile::ReadOnly)){
        dt = f.readAll();
        f.close();
    }
    return dt;
}


QString getDecimalbit(double v,int i)
{
    QString tmp;
    switch(i)
    {
    case 0 :
       tmp.sprintf("%.0lf",v);
        break;
    case 1:
        tmp.sprintf("%.1lf",v);
         break;
    case 2:
        tmp.sprintf("%.2lf",v);
         break;
    case 3:
        tmp.sprintf("%.3lf",v);
         break;
    case 4:
        tmp.sprintf("%.4lf",v);
         break;
    case 5:
        tmp.sprintf("%.5lf",v);
         break;
    case 6:
        tmp.sprintf("%.6lf",v);
         break;
    case 7:
        tmp.sprintf("%.7lf",v);
         break;
    case 8:
        tmp.sprintf("%.8lf",v);
         break;
    default:
        tmp.sprintf("%.9lf",v);
         break;
    }
    return tmp;
}