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windows-server-2003/inetcore/outlookexpress/msoert/datetime.cpp

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/*
* datetime.c
*
* Purpose:
* mostly stolen from NT winfile
*
* Call GetInternational(), on startup and WM_WININICHANGE
*
* Owners:
* brettm
*/
#include "pch.hxx"
#include <time.h>
#include "dt.h"
#include <BadStrFunctions.h>
ASSERTDATA
CCH CchFmtTime ( PDTR pdtr, LPSTR szBuf, CCH cchBuf, TMTYP tmtyp );
CCH CchFmtDate ( PDTR pdtr, LPSTR szBuf, CCH cchBuf, DTTYP dttyp, LPSTR szDatePicture );
CCH CchFmtDateTime ( PDTR pdtr, LPSTR szDateTime, CCH cch, DTTYP dttyp, TMTYP tmtyp, BOOL fForceWestern);
void GetCurDateTime(PDTR pdtr);
BOOL GetDowDateFormat(char *sz, int cch);
//WIDE VERSIONS
CCH CchFmtTimeW (PDTR pdtr, LPWSTR wszBuf, CCH cchBuf, TMTYP tmtyp,
PFGETTIMEFORMATW pfGetTimeFormatW);
CCH CchFmtDateW (PDTR pdtr, LPWSTR wszBuf, CCH cchBuf, DTTYP dttyp, LPWSTR wszDatePicture,
PFGETDATEFORMATW pfGetDateFormatW);
CCH CchFmtDateTimeW (PDTR pdtr, LPWSTR wszDateTime, CCH cch, DTTYP dttyp, TMTYP tmtyp,
BOOL fForceWestern, PFGETDATEFORMATW pfGetDateFormatW,
PFGETTIMEFORMATW pfGetTimeFormatW);
BOOL GetDowDateFormatW(WCHAR *wsz, int cch, PFGETLOCALEINFOW pfGetLocaleInfoW);
#define LCID_WESTERN MAKELCID(MAKELANGID(LANG_ENGLISH, SUBLANG_ENGLISH_US), SORT_DEFAULT)
/*
* CchFileTimeToDateTimeSz
*
* Purpose:
* Takes the time passed in as a FILETIME stick it into a ized string using
* the short date format.
* For WIN32, the *pft is converted to the time before made
* into a string
*
* Parameters:
* pft Points to FILETIME structure
* szStr String where to put the ized version of the date
* fNoSeconds Don't display seconds
*
* Returns:
* The length of the date string
*/
OESTDAPI_(INT) CchFileTimeToDateTimeSz(FILETIME * pft, CHAR * szDateTime, int cch, DWORD dwFlags)
{
int iret;
FILETIME ft;
DTTYP dttyp;
TMTYP tmtyp;
DTR dtr;
SYSTEMTIME st;
char szFmt[CCHMAX_DOWDATEFMT];
// Put the file time in our time zone.
if (!(dwFlags & DTM_NOTIMEZONEOFFSET))
FileTimeToLocalFileTime(pft, &ft);
else
ft = *pft;
FileTimeToSystemTime(&ft, &st);
if (dwFlags & DTM_DOWSHORTDATE)
{
Assert((dwFlags & DTM_DOWSHORTDATE) == DTM_DOWSHORTDATE);
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
if (GetDowDateFormat(szFmt, sizeof(szFmt)))
iret = GetDateFormat(LOCALE_USER_DEFAULT, LOCALE_USE_CP_ACP, &st, szFmt, szDateTime, cch);
else
iret = 0;
return(iret);
}
dtr.yr = st.wYear;
dtr.mon = st.wMonth;
dtr.day = st.wDay;
dtr.hr = st.wHour;
dtr.mn = st.wMinute;
dtr.sec = st.wSecond;
dttyp = ((dwFlags & DTM_LONGDATE) ? dttypLong : dttypShort);
tmtyp = ((dwFlags & DTM_NOSECONDS) ? ftmtypAccuHM : ftmtypAccuHMS);
if (dwFlags & DTM_NODATE)
{
iret = CchFmtTime(&dtr, szDateTime, cch, tmtyp);
}
else if (dwFlags & DTM_NOTIME)
{
iret = CchFmtDate(&dtr, szDateTime, cch, dttyp, NULL);
}
else
{
//For the formatted date, DTM_FORCEWESTERN flag returns English date and time.
//Without DTM_FORCEWESTERN the formatted time may not be representable in ASCII.
iret = CchFmtDateTime(&dtr, szDateTime, cch, dttyp, tmtyp, dwFlags & DTM_FORCEWESTERN);
}
return(iret);
}
CCH CchFmtTime ( PDTR pdtr, LPSTR szBuf, CCH cchBuf, TMTYP tmtyp )
{
DWORD flags;
int cch;
SYSTEMTIME st;
if ( cchBuf == 0 )
{
AssertSz ( fFalse, "0-length buffer passed to CchFmtTime" );
return 0;
}
Assert(szBuf);
if (pdtr == NULL)
{
GetLocalTime(&st);
}
else
{
// Bullet raid #3143
// Validate data. Set to minimums if invalid.
Assert(pdtr->hr >= 0 && pdtr->hr < 24);
Assert(pdtr->mn >= 0 && pdtr->mn < 60);
Assert(pdtr->sec >= 0 && pdtr->sec < 60);
// GetTimeFormat doesn't like invalid values
ZeroMemory(&st, sizeof(SYSTEMTIME));
st.wMonth = 1;
st.wDay = 1;
st.wHour = pdtr->hr;
st.wMinute = pdtr->mn;
st.wSecond = pdtr->sec;
}
Assert((tmtyp & ftmtypHours24) == 0);
if ( tmtyp & ftmtypAccuHMS )
flags = 0;
else if ( tmtyp & ftmtypAccuH )
flags = TIME_NOMINUTESORSECONDS;
else
flags = TIME_NOSECONDS; // default value
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
flags |= LOCALE_USE_CP_ACP;
cch = GetTimeFormat(LOCALE_USER_DEFAULT, flags, &st, NULL, szBuf, cchBuf);
return((cch == 0) ? 0 : (cch - 1));
}
/*
- CchFmtDate
-
* Purpose:
* formats the date passed in the DTR into the LPSTR passed
* according to the formatting "instructions" passed in DTTYP
* and szDatePicture. If values are not explicitly passed,
* values are read in from WIN.INI
*
* Arguments:
* pdtr: pointer to DTR where time is passed - if NULL,
* current date is used.
* szBuf: buffer where formatted info is to be passed
* cchBuf: size of buffer
* dttyp: type of date format
* szDatePicture: picture of the date - if NULL, values are
* read in from WIN.INI
*
* Note: see reply from win-bug at end of function describing
* separator strings in date pictures
*
* Returns:
* count of chars inserted in szBuf
*
* Side effects:
*
*
* Errors:
* returns count of 0 in case of error
*
*/
CCH CchFmtDate ( PDTR pdtr, LPSTR szBuf, CCH cchBuf, DTTYP dttyp, LPSTR szDatePicture )
{
SYSTEMTIME st={0};
int cch;
DTR dtr;
DWORD flags;
Assert(szBuf);
if (!cchBuf)
{
AssertSz ( fFalse, "0-length buffer passed to CchFmtDate" );
return 0;
}
if (!pdtr)
{
pdtr = &dtr;
GetCurDateTime ( pdtr );
}
else
{
// Bullet raid #3143
// Validate data. Set to minimums if invalid.
if (pdtr->yr < nMinDtrYear || pdtr->yr >= nMacDtrYear)
pdtr->yr = nMinDtrYear;
if (pdtr->mon <= 0 || pdtr->mon > 12)
pdtr->mon = 1;
if (pdtr->day <= 0 || pdtr->day > 31)
pdtr->day = 1;
if (pdtr->dow < 0 || pdtr->dow >= 7)
pdtr->dow = 0;
}
Assert ( pdtr );
Assert ( pdtr->yr >= nMinDtrYear && pdtr->yr < nMacDtrYear );
Assert ( pdtr->mon > 0 && pdtr->mon <= 12 );
Assert ( pdtr->day > 0 && pdtr->day <= 31 );
Assert((dttyp == dttypShort) || (dttyp == dttypLong));
// TODO: handle dttypSplSDayShort properly...
flags = 0;
if (dttyp == dttypLong)
flags = flags | DATE_LONGDATE;
st.wYear = pdtr->yr;
st.wMonth = pdtr->mon;
st.wDay = pdtr->day;
st.wDayOfWeek = 0;
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
flags |= LOCALE_USE_CP_ACP;
cch = GetDateFormat(LOCALE_USER_DEFAULT, flags, &st, NULL, szBuf, cchBuf);
return((cch == 0) ? 0 : (cch - 1));
}
CCH CchFmtDateTime ( PDTR pdtr, LPSTR szDateTime, CCH cch, DTTYP dttyp, TMTYP tmtyp, BOOL fForceWestern)
{
int cchT;
LPSTR szTime;
DWORD flags;
SYSTEMTIME st={0};
int icch = cch;
st.wYear = pdtr->yr;
st.wMonth = pdtr->mon;
st.wDay = pdtr->day;
st.wHour = pdtr->hr;
st.wMinute = pdtr->mn;
st.wSecond = pdtr->sec;
Assert (LCID_WESTERN == 0x409);
Assert((dttyp == dttypShort) || (dttyp == dttypLong));
if (dttyp == dttypLong)
flags = DATE_LONGDATE;
else
flags = DATE_SHORTDATE;
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
flags |= LOCALE_USE_CP_ACP;
*szDateTime = 0;
cchT = GetDateFormat(fForceWestern? LCID_WESTERN:LOCALE_USER_DEFAULT, flags, &st, NULL, szDateTime, cch);
if (cchT == 0)
return(0);
//Don't do the rest of the stuff if we don't have atleast two chars. because we need to add space between date and time.
//After that theres no point in calling GetTimeFormatW if there isn't atleast one char left.
if (cchT <= (icch - 2))
{
flags = 0;
if (tmtyp & ftmtypHours24)
flags |= TIME_FORCE24HOURFORMAT;
if (tmtyp & ftmtypAccuH)
flags |= TIME_NOMINUTESORSECONDS;
else if (!(tmtyp & ftmtypAccuHMS))
flags |= TIME_NOSECONDS;
// Tack on a space and then the time.
// GetDateFormat returns count of chars INCLUDING the NULL terminator, hence the - 1
szTime = szDateTime + (cchT - 1);
*szTime++ = ' ';
*szTime = 0;
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
flags|= LOCALE_USE_CP_ACP;
cchT = GetTimeFormat(fForceWestern? LCID_WESTERN:LOCALE_USER_DEFAULT, flags, &st, NULL, szTime, (cch - cchT));
}
else
cchT = 0;
return(cchT == 0 ? 0 : lstrlen(szDateTime));
}
/*
- GetCurDateTime
-
* Purpose:
* Gets the current system date/time from the OS, and stores it
* as an expanded date/time in *pdtr.
*
* Parameters:
* pdtr Pointer to the DTR used to store the date/time.
*
* Returns:
* void
*
*/
void GetCurDateTime(PDTR pdtr)
{
SYSTEMTIME SystemTime;
GetLocalTime(&SystemTime);
pdtr->hr= SystemTime.wHour;
pdtr->mn= SystemTime.wMinute;
pdtr->sec= SystemTime.wSecond;
pdtr->day = SystemTime.wDay;
pdtr->mon = SystemTime.wMonth;
pdtr->yr = SystemTime.wYear;
pdtr->dow = SystemTime.wDayOfWeek;
}
BOOL GetDowDateFormat(char *sz, int cch)
{
char szDow[] = "ddd ";
Assert(cch > sizeof(szDow));
StrCpyN(sz, szDow, cch);
//Use LOCALE_USE_CP_ACP to make sure that CP_ACP is used
return(0 != GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SSHORTDATE | LOCALE_USE_CP_ACP,
&sz[4], cch - 4));
}
//
// CompareSystime
//
// returns 0 if *pst1 == *pst2 (ignores milliseconds)
// returns <0 if *pst1 < *pst2
// return >0 if *pst1 > *pst2
//
int CompareSystime(SYSTEMTIME *pst1, SYSTEMTIME *pst2)
{
int iRet;
if ((iRet = pst1->wYear - pst2->wYear) == 0)
{
if ((iRet = pst1->wMonth - pst2->wMonth) == 0)
{
if ((iRet = pst1->wDay - pst2->wDay) == 0)
{
if ((iRet = pst1->wHour - pst2->wHour) == 0)
{
if ((iRet = pst1->wMinute - pst2->wMinute) == 0)
iRet = pst1->wSecond - pst2->wSecond;
}
}
}
}
return(iRet);
}
OESTDAPI_(INT) CchFileTimeToDateTimeW(FILETIME * pft, WCHAR * wszDateTime,
int cch, DWORD dwFlags,
PFGETDATEFORMATW pfGetDateFormatW,
PFGETTIMEFORMATW pfGetTimeFormatW,
PFGETLOCALEINFOW pfGetLocaleInfoW)
{
int iret;
FILETIME ft;
DTTYP dttyp;
TMTYP tmtyp;
DTR dtr;
SYSTEMTIME st;
WCHAR wszFmt[CCHMAX_DOWDATEFMT];
// Put the file time in our time zone.
if (!(dwFlags & DTM_NOTIMEZONEOFFSET))
FileTimeToLocalFileTime(pft, &ft);
else
ft = *pft;
FileTimeToSystemTime(&ft, &st);
if (dwFlags & DTM_DOWSHORTDATE)
{
Assert((dwFlags & DTM_DOWSHORTDATE) == DTM_DOWSHORTDATE);
if (GetDowDateFormatW(wszFmt, ARRAYSIZE(wszFmt), pfGetLocaleInfoW))
iret = pfGetDateFormatW(LOCALE_USER_DEFAULT, 0, &st, wszFmt, wszDateTime, cch);
else
iret = 0;
return(iret);
}
dtr.yr = st.wYear;
dtr.mon = st.wMonth;
dtr.day = st.wDay;
dtr.hr = st.wHour;
dtr.mn = st.wMinute;
dtr.sec = st.wSecond;
dtr.dow = st.wDayOfWeek;
dttyp = ((dwFlags & DTM_LONGDATE) ? dttypLong : dttypShort);
tmtyp = ((dwFlags & DTM_NOSECONDS) ? ftmtypAccuHM : ftmtypAccuHMS);
if (dwFlags & DTM_NODATE)
{
iret = CchFmtTimeW(&dtr, wszDateTime, cch, tmtyp, pfGetTimeFormatW);
}
else if (dwFlags & DTM_NOTIME)
{
iret = CchFmtDateW(&dtr, wszDateTime, cch, dttyp, NULL, pfGetDateFormatW);
}
else
{
//For the formatted date, DTM_FORCEWESTERN flag returns English date and time.
//Without DTM_FORCEWESTERN the formatted time may not be representable in ASCII.
iret = CchFmtDateTimeW(&dtr, wszDateTime, cch, dttyp, tmtyp,
dwFlags & DTM_FORCEWESTERN, pfGetDateFormatW,
pfGetTimeFormatW);
}
return(iret);
}
CCH CchFmtTimeW( PDTR pdtr, LPWSTR wszBuf, CCH cchBuf, TMTYP tmtyp,
PFGETTIMEFORMATW pfGetTimeFormatW)
{
DWORD flags;
int cch;
SYSTEMTIME st;
if ( cchBuf == 0 )
{
AssertSz ( fFalse, "0-length buffer passed to CchFmtTime" );
return 0;
}
Assert(wszBuf);
if (pdtr == NULL)
{
GetLocalTime(&st);
}
else
{
// Bullet raid #3143
// Validate data. Set to minimums if invalid.
Assert(pdtr->hr >= 0 && pdtr->hr < 24);
Assert(pdtr->mn >= 0 && pdtr->mn < 60);
Assert(pdtr->sec >= 0 && pdtr->sec < 60);
// GetTimeFormat doesn't like invalid values
ZeroMemory(&st, sizeof(SYSTEMTIME));
st.wMonth = 1;
st.wDay = 1;
st.wHour = pdtr->hr;
st.wMinute = pdtr->mn;
st.wSecond = pdtr->sec;
}
Assert((tmtyp & ftmtypHours24) == 0);
if ( tmtyp & ftmtypAccuHMS )
flags = 0;
else if ( tmtyp & ftmtypAccuH )
flags = TIME_NOMINUTESORSECONDS;
else
flags = TIME_NOSECONDS; // default value
cch = pfGetTimeFormatW(LOCALE_USER_DEFAULT, flags, &st, NULL, wszBuf, cchBuf);
return((cch == 0) ? 0 : (cch - 1));
}
CCH CchFmtDateW( PDTR pdtr, LPWSTR wszBuf, CCH cchBuf, DTTYP dttyp, LPWSTR wszDatePicture,
PFGETDATEFORMATW pfGetDateFormatW)
{
SYSTEMTIME st={0};
int cch;
DTR dtr;
DWORD flags;
Assert(wszBuf);
if (!cchBuf)
{
AssertSz ( fFalse, "0-length buffer passed to CchFmtDate" );
return 0;
}
if (!pdtr)
{
pdtr = &dtr;
GetCurDateTime ( pdtr );
}
else
{
// Bullet raid #3143
// Validate data. Set to minimums if invalid.
if (pdtr->yr < nMinDtrYear || pdtr->yr >= nMacDtrYear)
pdtr->yr = nMinDtrYear;
if (pdtr->mon <= 0 || pdtr->mon > 12)
pdtr->mon = 1;
if (pdtr->day <= 0 || pdtr->day > 31)
pdtr->day = 1;
if (pdtr->dow < 0 || pdtr->dow >= 7)
pdtr->dow = 0;
}
Assert ( pdtr );
Assert ( pdtr->yr >= nMinDtrYear && pdtr->yr < nMacDtrYear );
Assert ( pdtr->mon > 0 && pdtr->mon <= 12 );
Assert ( pdtr->day > 0 && pdtr->day <= 31 );
Assert((dttyp == dttypShort) || (dttyp == dttypLong));
// TODO: handle dttypSplSDayShort properly...
flags = 0;
if (dttyp == dttypLong)
flags = flags | DATE_LONGDATE;
st.wYear = pdtr->yr;
st.wMonth = pdtr->mon;
st.wDay = pdtr->day;
st.wDayOfWeek = 0;
cch = pfGetDateFormatW(LOCALE_USER_DEFAULT, flags, &st, NULL, wszBuf, cchBuf);
return((cch == 0) ? 0 : (cch - 1));
}
CCH CchFmtDateTimeW( PDTR pdtr, LPWSTR wszDateTime, CCH cch, DTTYP dttyp, TMTYP tmtyp,
BOOL fForceWestern, PFGETDATEFORMATW pfGetDateFormatW,
PFGETTIMEFORMATW pfGetTimeFormatW)
{
int cchT;
LPWSTR wszTime;
DWORD flags;
SYSTEMTIME st={0};
int icch = cch;
st.wYear = pdtr->yr;
st.wMonth = pdtr->mon;
st.wDay = pdtr->day;
st.wHour = pdtr->hr;
st.wMinute = pdtr->mn;
st.wSecond = pdtr->sec;
Assert (LCID_WESTERN == 0x409);
Assert((dttyp == dttypShort) || (dttyp == dttypLong));
if (dttyp == dttypLong)
flags = DATE_LONGDATE;
else
flags = DATE_SHORTDATE;
*wszDateTime = 0;
cchT = pfGetDateFormatW(fForceWestern? LCID_WESTERN:LOCALE_USER_DEFAULT, flags, &st, NULL, wszDateTime, cch);
if (cchT == 0)
return(0);
//Don't do the rest of the stuff if we don't have atleast two chars. because we need to add space between date and time.
//After that theres no point in calling GetTimeFormatW if there isn't atleast one char left.
if (cchT <= (icch - 2))
{
flags = 0;
if (tmtyp & ftmtypHours24)
flags |= TIME_FORCE24HOURFORMAT;
if (tmtyp & ftmtypAccuH)
flags |= TIME_NOMINUTESORSECONDS;
else if (!(tmtyp & ftmtypAccuHMS))
flags |= TIME_NOSECONDS;
// Tack on a space and then the time.
// GetDateFormat returns count of chars INCLUDING the NULL terminator, hence the - 1
wszTime = wszDateTime + (lstrlenW(wszDateTime));
*wszTime++ = L' ';
*wszTime = 0;
cchT = pfGetTimeFormatW(fForceWestern? LCID_WESTERN:LOCALE_USER_DEFAULT, flags, &st, NULL, wszTime, (cch - cchT));
}
else
cchT = 0;
return(cchT == 0 ? 0 : lstrlenW(wszDateTime));
}
BOOL GetDowDateFormatW(WCHAR *wsz, int cch, PFGETLOCALEINFOW pfGetLocaleInfoW)
{
WCHAR wszDow[] = L"ddd ";
Assert(cch > sizeof(wszDow));
StrCpyNW(wsz, wszDow, cch);
return(0 != (pfGetLocaleInfoW)(LOCALE_USER_DEFAULT, LOCALE_SSHORTDATE,
&wsz[4], cch - 4));
}