japanese.h File Reference

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Classes
struct	JAPANESE_ERA

Macros
#define	JAPANESE_MAX_TWODIGITYEAR   99

Typedefs
typedef struct JAPANESE_ERA	JAPANESE_ERA
typedef struct JAPANESE_ERA *	PJAPANESE_ERA
typedef const JAPANESE_ERA *	PCJAPANESE_ERA

Functions
BOOL	JapaneseEra_IsFirstYearGannen (void)
PCJAPANESE_ERA	JapaneseEra_Find (const SYSTEMTIME *pst OPTIONAL)
void	JapaneseEra_ClearCache (void)

Macro Definition Documentation

JAPANESE_MAX_TWODIGITYEAR

#define JAPANESE_MAX_TWODIGITYEAR   99

Definition at line 7 of file japanese.h.

Typedef Documentation

JAPANESE_ERA

typedef struct JAPANESE_ERA JAPANESE_ERA

PCJAPANESE_ERA

typedef const JAPANESE_ERA* PCJAPANESE_ERA

Definition at line 19 of file japanese.h.

PJAPANESE_ERA

typedef struct JAPANESE_ERA * PJAPANESE_ERA

Function Documentation

JapaneseEra_ClearCache()

void JapaneseEra_ClearCache

(

void

)

Definition at line 38 of file japanese.c.

{
    s_bIsGannenCached = FALSE;
    s_JapaneseEraCount = 0;
}

Referenced by InvalidateNLSCache().

JapaneseEra_Find()

PCJAPANESE_ERA JapaneseEra_Find

(

const SYSTEMTIME *pst

OPTIONAL

)

Definition at line 236 of file japanese.c.

{
    DWORD dwIndex, dwCount = 0;
    PCJAPANESE_ERA pTable, pEntry, pPrevEntry = NULL;
    SYSTEMTIME st1, st2;
    FILETIME ft1, ft2;
    LONG nCompare;
 
    /* pst --> ft1 */
    if (pst == NULL)
    {
        GetLocalTime(&st1);
        pst = &st1;
    }
    SystemTimeToFileTime(pst, &ft1);
 
    /* load era table */
    pTable = JapaneseEra_Load(&dwCount);
    if (pTable == NULL || dwCount == 0 || dwCount > JAPANESE_ERA_MAX)
    {
        return NULL;
    }
 
    /* for all eras */
    for (dwIndex = 0; dwIndex < dwCount; dwIndex++)
    {
        pEntry = &pTable[dwIndex];
 
        /* pEntry --> st2 --> ft2 */
        JapaneseEra_ToSystemTime(pEntry, &st2);
        SystemTimeToFileTime(&st2, &ft2);
 
        /* ft1 <=> ft2 */
        nCompare = CompareFileTime(&ft1, &ft2);
        if (nCompare == 0)
            return pEntry;
        if (nCompare < 0)
            return pPrevEntry;
        pPrevEntry = pEntry;
    }
 
    return pPrevEntry;
}

Referenced by GetCalendarInfoW(), and NLS_GetDateTimeFormatW().

JapaneseEra_IsFirstYearGannen()

BOOL JapaneseEra_IsFirstYearGannen

(

void

)

Definition at line 63 of file japanese.c.

{
#ifdef DONT_USE_REGISTRY
    return TRUE;
#else
    HANDLE KeyHandle;
    DWORD dwIndex;
    WCHAR szName[32], szValue[32];
    static BOOL s_bFirstIsGannen = TRUE;
 
    if (s_bIsGannenCached)
        return s_bFirstIsGannen;
 
    KeyHandle = NLS_RegOpenKey(NULL, L"\\Registry\\Machine\\System\\"
        L"CurrentControlSet\\Control\\Nls\\Calendars\\Japanese");
    if (!KeyHandle)
        return TRUE;
 
    s_bFirstIsGannen = TRUE;
    for (dwIndex = 0; dwIndex < 16; ++dwIndex)
    {
        if (!NLS_RegEnumValue(KeyHandle, dwIndex, szName, sizeof(szName),
                              szValue, sizeof(szValue)))
        {
            break;
        }
 
        if (lstrcmpiW(szName, L"InitialEraYear") == 0)
        {
            s_bFirstIsGannen = (szValue[0] == 0x5143);
            break;
        }
    }
 
    NtClose(KeyHandle);
 
    s_bIsGannenCached = TRUE;
 
    return s_bFirstIsGannen;
#endif
}

Referenced by NLS_GetDateTimeFormatW().