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Extract common code in a new wxTryGetTm() helper function

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Replace exactly the same code occurring in both wxDateTime::GetTm() and
Format() with a single version in a new wxTryGetTm() function.

No real changes yet, except for removing of some useless asserts.
This commit is contained in:
Vadim Zeitlin 2017-11-29 22:02:16 +01:00
parent 39dc254bf4
commit f13b7c6a55
2 changed files with 23 additions and 65 deletions
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52
src/common/datetime.cpp
View File

@ -1430,6 +1430,24 @@ unsigned long wxDateTime::GetAsDOS() const
// time_t <-> broken down time conversions
// ----------------------------------------------------------------------------
const tm* wxTryGetTm(tm& tmstruct, time_t t, const wxDateTime::TimeZone& tz)
{
if ( tz.GetOffset() == -wxGetTimeZone() )
{
// we are working with local time
return wxLocaltime_r(&t, &tmstruct);
}
else
{
t += (time_t)tz.GetOffset();
#if !defined(__VMS__) // time is unsigned so avoid warning
if ( t < 0 )
return NULL;
#endif
return wxGmtime_r(&t, &tmstruct);
}
}
wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
{
wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") );
@ -1437,39 +1455,9 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
time_t time = GetTicks();
if ( time != (time_t)-1 )
{
// use C RTL functions
// Try to use the RTL.
struct tm tmstruct;
tm *tm;
if ( tz.GetOffset() == -wxGetTimeZone() )
{
// we are working with local time
tm = wxLocaltime_r(&time, &tmstruct);
// should never happen
wxCHECK_MSG( tm, Tm(), wxT("wxLocaltime_r() failed") );
}
else
{
time += (time_t)tz.GetOffset();
#if defined(__VMS__) // time is unsigned so avoid warning
int time2 = (int) time;
if ( time2 >= 0 )
#else
if ( time >= 0 )
#endif
{
tm = wxGmtime_r(&time, &tmstruct);
// should never happen
wxCHECK_MSG( tm, Tm(), wxT("wxGmtime_r() failed") );
}
else
{
tm = (struct tm *)NULL;
}
}
if ( tm )
if ( const tm* tm = wxTryGetTm(tmstruct, time, tz) )
{
// adjust the milliseconds
Tm tm2(*tm, tz);

36
src/common/datetimefmt.cpp
View File

@ -65,6 +65,7 @@
// ----------------------------------------------------------------------------
extern void wxInitTm(struct tm& tm);
extern const tm* wxTryGetTm(tm& tmstruct, time_t t, const wxDateTime::TimeZone& tz);
extern wxString wxCallStrftime(const wxString& format, const tm* tm);
@ -367,40 +368,9 @@ wxString wxDateTime::Format(const wxString& formatp, const TimeZone& tz) const
if ( canUseStrftime )
{
// use strftime()
// Try using strftime()
struct tm tmstruct;
struct tm *tm;
if ( tz.GetOffset() == -wxGetTimeZone() )
{
// we are working with local time
tm = wxLocaltime_r(&time, &tmstruct);
// should never happen
wxCHECK_MSG( tm, wxEmptyString, wxT("wxLocaltime_r() failed") );
}
else
{
time += (int)tz.GetOffset();
#if defined(__VMS__) // time is unsigned so avoid warning
int time2 = (int) time;
if ( time2 >= 0 )
#else
if ( time >= 0 )
#endif
{
tm = wxGmtime_r(&time, &tmstruct);
// should never happen
wxCHECK_MSG( tm, wxEmptyString, wxT("wxGmtime_r() failed") );
}
else
{
tm = (struct tm *)NULL;
}
}
if ( tm )
if ( const tm* tm = wxTryGetTm(tmstruct, time, tz) )
{
return wxCallStrftime(format, tm);
}