©2004 by Marc J. Rochkind. All rights reserved. Portions marked "Open Source" may be copied under license.

 

                 

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ux/uxtimetm.cpp

Go to the documentation of this file.

/*
    Copyright 2003 by Marc J. Rochkind. All rights reserved.
    May be copied only for purposes and under conditions described
    on the Web page www.basepath.com/aup/copyright.htm.

    The Example Files are provided "as is," without any warranty;
    without even the implied warranty of merchantability or fitness
    for a particular purpose. The author and his publisher are not
    responsible for any damages, direct or incidental, resulting
    from the use or non-use of these Example Files.

    The Example Files may contain defects, and some contain deliberate
    coding mistakes that were included for educational reasons.
    You are responsible for determining if and how the Example Files
    are to be used.

*/
#include "ux.hpp"
#include <iomanip>
#include <sys/time.h>

using namespace Ux;

time_t Timetm::mktime(void)
{
    time_t t;

    errno = 0;
    if ((t = ::mktime(this)) == -1) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
    return t;
}

const char *Timetm::asctime(bool keep_nl)
{
    if (::asctime_r(this, str.timestr) == NULL)
        throw Error(EINVAL); // SUS defines no errno values -- make one up
    if (!keep_nl)
        str.timestr[strlen(str.timestr) - 1] = '\0';
    return str;
}

void Timetm::getdate(const char *s)
{
    struct tm *t;

    if ((t = ::getdate(s)) == NULL)
        throw Error(getdate_err, EC_GETDATE);
    set(*t);
}

void Timetm::gmtime(const time_t *t)
{
    time_t tx;

    if (t == NULL) {
        tx = Timet::time();
        t = &tx;
    }
    if (::gmtime_r(t, this) == NULL)
        throw Error(errno);
}

void Timetm::localtime(const time_t *t)
{
    time_t tx;

    if (t == NULL) {
        tx = Timet::time();
        t = &tx;
    }
    if (::localtime_r(t, this) == NULL)
        throw Error(errno);
}

void Timetm::set(const struct tm& t)
{
    tm_sec = t.tm_sec;
    tm_min = t.tm_min;
    tm_hour = t.tm_hour;
    tm_mday = t.tm_mday;
    tm_mon = t.tm_mon;
    tm_year = t.tm_year;
    tm_wday = t.tm_wday;
    tm_yday = t.tm_yday;
    tm_isdst = t.tm_isdst;
    str.clear();
}

char *Timetm::strptime(const char *s, const char *format)
{
    char *p;
    
    errno = 0;
    if ((p = ::strptime(s, format, this)) == NULL) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
    return p;
}

size_t Timetm::strftime(char *buf, size_t bufsize, const char *format)
{
    size_t n;
    
    errno = 0;
    if ((n = ::strftime(buf, bufsize, format, this)) == 0) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
    return n;
}

size_t Timetm::wcsftime(wchar_t *buf, size_t bufsize, const wchar_t *format)
{
    size_t n;
    
    errno = 0;
    if ((n = ::wcsftime(buf, bufsize, format, this)) == 0) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
    return n;
}

const char *Timestr::ctime(const time_t *t, bool keep_nl)
{
    time_t tx;

    if (t == NULL) {
        tx = Timet::time();
        t = &tx;
    }
    if (::ctime_r(t, timestr) == NULL)
        throw Error(errno);
    if (!keep_nl)
        timestr[strlen(timestr) - 1] = '\0';
    return timestr;
}

/* static */ time_t Timet::time(void)
{
    time_t t;

    errno = 0;
    if ((t = ::time(NULL)) == -1) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
    return t;
}

double Timet::difftime(time_t time0)
{
    return ::difftime(tt, time0);
}

    //#include <sys/time.h>
void Timeval::gettimeofday(void)
{
    errno = 0;
    if (::gettimeofday(this, NULL) != 0) {
        if (errno == 0)
            errno = EINVAL; // SUS defines no errno values -- make one up
        throw Error(errno);
    }
}

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