qdate-helpers.cpp

QT4的utils库源码包.解压后运行./configure配置,然后make.使用时在.pro文件中加入两行:LIBS+=-L$$(CPPLIBS)-lutils及INCLUDEPATH+=$$(C

/** QDate Helper functions */
//start id=insert-extract
#include "qdate-helpers.h"
#include "qstd.h"


QTextStream &operator<<(QTextStream& os, const QDate& qd) {
    os << qd.toString(Qt::ISODate);
    return os;
}

QTextStream &operator>>(QTextStream& is, QDate& qd) {
    QString temporary;
    is >> temporary;
    qd = QDate::fromString(temporary, Qt::ISODate);
    return is;
}
//end

void cinReadDate(QDate& wd) {
    QString datestr;
    while (1) {
		qstd::cout() << "Enter date in ISO format yyyy-mm-dd:q " << flush;
        datestr = qstd::cin().readLine();
        wd = QDate::fromString(datestr, Qt::ISODate);
        if (wd.isValid())
            return;
		qstd::cout() << "Invalid input\n";
    }
}

QDate& operator+=(QDate& qd, int numDays) {
    qd = qd.addDays(numDays);
    return qd;
}

QDate operator+(const QDate& qd, int numDays) {
    return qd.addDays(numDays);
}


int operator-(const QDate& qd1, const QDate& qd2) {
    return qd2.daysTo(qd1);
}