*********************************************************
* Function getftime
* Return the create date and time, last access date and time,
* last write date and time from a passed filename.
* 
* Passed:
* lcFileName (by value): fully-qualified filename
* 
* Returns:
* Logical .t. if completed successfully, .f. if not.
* 
* Return variables:
* ldCreateDate (date, by reference): Creation date
* lcCreateTime (character, by reference): Creation time (HH:MM:SS.mm)
* ldAccessDate (date, by reference): Last access date
* lcAccessTime (character, by reference): Last access time (HH:MM:SS.mm)
* lcLastWriteDate (date, by reference): Last write date
* lcLastWriteTime (character, by reference): Last write time (HH:MM:SS.mm)
 
STORE {} TO m.createdate, m.accessdate, m.lastwritedate
STORE "" TO m.createtime, m.accesstime, m.lastwritetime
 
m.OK = getftime("C:\Test.txt", @m.createdate, @m.createtime, ;
    @m.accessdate, @m.accesstime, @m.lastwritedate, @m.lastwritetime)
 
IF m.OK
    ? "Create date:      ", m.createdate
    ? "Create time:      " , m.createtime
    ? "Last access date: ", m.accessdate
    ? "Last access time: ", m.accesstime
    ? "Last write date:  ", m.lastwritedate
    ? "Last write time:  ", m.lastwritetime
ELSE
    ? "Error getting file times"
ENDIF
* End of usage example.
 
FUNCTION getftime
PARAMETERS lcFileName, ldCreateDate, lcCreateTime, ldAccessDate,;
    lcAccessTime, ldLastWriteDate, lcLastWriteTime
 
* DEFINEs for file share mode.
#DEFINE FILE_SHARE_READ  1
#DEFINE FILE_SHARE_WRITE 2
 
* DEFINEs for access right
 #DEFINE GENERIC_READ  hex2dec("80000000")
 #DEFINE GENERIC_WRITE hex2dec("40000000")
 
* DEFINES for Create Mode.
#DEFINE CREATE_NEW  1
#DEFINE CREATE_ALWAYS 2
#DEFINE OPEN_EXISTING 3
#DEFINE OPEN_ALWAYS 4
#DEFINE TRUNCATE_EXISTING 5
 
* File flag.
#DEFINE FILE_ATTRIBUTE_NORMAL hex2dec("80")
 
    * Blank filename or nonexistent file, no need to continue.
    IF EMPTY(lcFileName) OR NOT FILE(lcFileName)
        RETURN .F.
    ENDIF
 
    DECLARE INTEGER CreateFile IN kernel32;
        STRING lpFileName, INTEGER dwDesiredAccess,;
        INTEGER dwShareMode, INTEGER lpSecurityAttributes,;
        INTEGER dwCreationDisposition,;
        INTEGER dwFlagsAndAttributes, INTEGER hTemplateFile
 
    DECLARE INTEGER GetFileTime IN kernel32;
        INTEGER hFile, STRING @lpCreationTime,;
        STRING @lpLastAccessTime, STRING @lpLastWriteTime
 
    DECLARE INTEGER FileTimeToLocalFileTime IN kernel32;
        STRING @lpFileTime, STRING @lpLocalFileTime
 
    DECLARE INTEGER FileTimeToSystemTime IN kernel32;
        STRING @lpFileTime, STRING @lpSystemTime
 
    DECLARE INTEGER GetLastError IN kernel32
    DECLARE INTEGER CloseHandle IN kernel32 INTEGER hObject
 
    * 2 DWORDs * 4 bytes each = an 8-byte buffer.
    STORE SPACE(8) TO CreationTime, LastAccessTime, lastwritetime
 
    * Same buffers for local time.
    STORE SPACE(8) TO LocalCreationTime,;
        LocalLastAccessTime, LocalLastWriteTime
 
    * 16-byte buffers for when we convert from the FILETIME
    * structs to the more human-readable SYSTEMTIME structures.
    STORE SPACE(16) TO ctSystemTime, laSystemTime, lwSystemTime
 
    * Open an existing file.
    lhFileHandle = CreateFile(lcFileName, GENERIC_READ,;
        FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0)
 
    IF lhFileHandle <= 0
        =MESSAGEB ("Error in CreateFile - " + lcFileName + ": Error code - " + ;
            LTRIM(STR(GetLastError())))
        RETURN .F.
    ENDIF
 
    * Make the GetFileTime call, to get Create, Access and Update times.
    m.retval = GetFileTime (lhFileHandle,;
        @CreationTime, @LastAccessTime, @lastwritetime)
 
    IF m.retval = 0
    * 32 = Sharing violation
    * 87 = Invalid parameter
        =MESSAGEB("Error calling GetFileTime. Error code: " + ;
            LTRIM(STR(GetLastError())))
        RETURN .F.
    ENDIF
 
* Successfully performed the GetFileTime call -
* now convert each of the three times to local time.
* If any of them fail, then exit.
    IF     FileTimeToLocalFileTime (@CreationTime, @LocalCreationTime) = 0;
        OR FileTimeToLocalFileTime (@LastAccessTime,@LocalLastAccessTime) = 0;
        OR FileTimeToLocalFileTime (@lastwritetime, @LocalLastWriteTime) = 0 
 
        = MESSAGEB("FileTimeToLocalFileTime Failed. Error code: " + ;
            LTRIM(STR(GetLastError())))
        RETURN .F.
    ENDIF
 
* Now you have a local filetime, convert each to a systemtime that
* you can work with.
* If any of the calls fail, then exit.
    IF     FileTimeToSystemTime (@LocalCreationTime, @ctSystemTime) = 0;
        OR FileTimeToSystemTime (@LocalLastAccessTime, @laSystemTime) = 0;
        OR FileTimeToSystemTime (@LocalLastWriteTime, @lwSystemTime) = 0
 
        = MESSAGEB("FileTimeToSystemTime call failed. Error code: " ;
            + LTRIM(STR(GetLastError())))
        RETURN .F.
    ENDIF
 
    ctstYear = Str2Word(LEFT(ctSystemTime, 2))
    ctstMonth = Str2Word(SUBSTR(ctSystemTime, 3, 2))
    ctstDayofWeek = Str2Word(SUBSTR(ctSystemTime, 5, 2))
    ctstDay = Str2Word(SUBSTR(ctSystemTime, 7, 2))
    ctstHour = Str2Word(SUBSTR(ctSystemTime, 9, 2))
    ctstMinute = Str2Word(SUBSTR(ctSystemTime, 11, 2))
    ctstSecond = Str2Word(SUBSTR(ctSystemTime, 13, 2))
    ctstMilliSecond = Str2Word(SUBSTR(ctSystemTime, 15, 2))
 
* Unpack the integers in last access time SystemTime structure.
    lastYear = Str2Word(LEFT(laSystemTime, 2))
    lastMonth = Str2Word(SUBSTR(laSystemTime, 3, 2))
    lastDayofWeek = Str2Word(SUBSTR(laSystemTime, 5, 2))
    lastDay = Str2Word(SUBSTR(laSystemTime, 7, 2))
    lastHour = Str2Word(SUBSTR(laSystemTime, 9, 2))
    lastMinute = Str2Word(SUBSTR(laSystemTime, 11, 2))
    lastSecond = Str2Word(SUBSTR(laSystemTime, 13, 2))
    lastMilliSecond = Str2Word(SUBSTR(laSystemTime, 15, 2))
 
* Unpack the integers in last write time SystemTime structure.
    lwstYear = Str2Word(LEFT(lwSystemTime, 2))
    lwstMonth = Str2Word(SUBSTR(lwSystemTime, 3, 2))
    lwstDayofWeek = Str2Word(SUBSTR(lwSystemTime, 5, 2))
    lwstDay = Str2Word(SUBSTR(lwSystemTime, 7, 2))
    lwstHour = Str2Word(SUBSTR(lwSystemTime, 9, 2))
    lwstMinute = Str2Word(SUBSTR(lwSystemTime, 11, 2))
    lwstSecond = Str2Word(SUBSTR(lwSystemTime, 13, 2))
    lwstMilliSecond = Str2Word(SUBSTR(lwSystemTime, 15, 2))
 
* Close the file handle.
    llRetCode = CloseHandle(lhFileHandle)
 
* Format the return variables.
    ldCreateDate = CTOD(LTRIM(STR(ctstMonth)) + "/" + ;
        LTRIM(STR(ctstDay)) + "/" + LTRIM(STR(ctstYear)))
 
    lcCreateTime = PADL(LTRIM(STR(ctstHour)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(ctstMinute)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(ctstSecond)), 2, "0") + "." + ;
        PADL(LTRIM(STR(ctstMilliSecond)), 3, "0")
 
    ldAccessDate = CTOD(LTRIM(STR(lastMonth)) + "/" + ;
        LTRIM(STR(lastDay)) + "/" + LTRIM(STR(lastYear)))
 
    lcAccessTime = PADL(LTRIM(STR(lastHour)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(lastMinute)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(lastSecond)), 2, "0") + "." + ;
        PADL(LTRIM(STR(lastMilliSecond)), 3, "0")
 
    ldLastWriteDate = CTOD(LTRIM(STR(lwstMonth))+ ;
        "/"+LTRIM(STR(lwstDay)) + "/" + LTRIM(STR(lwstYear)))
 
    lcLastWriteTime = PADL(LTRIM(STR(lwstHour)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(lwstMinute)), 2, "0") + ":" + ;
        PADL(LTRIM(STR(lwstSecond)), 2, "0") + "." + ;
        PADL(LTRIM(STR(lwstMilliSecond)), 3, "0")
 
* Function hex2dec - Convert a character hex value into decimal.
* Handy for dealing with Hex declarations in API calls.
* Passed: m.hex (character hex value)
* Returns: Decimal value
FUNCTION hex2dec
PARAMETER m.hex
    m.decimal = 0
    FOR i = LEN(m.hex) TO 1 STEP -1
        m.decimal = m.decimal + (AT(SUBSTR(m.hex, i, 1), ;
            "0123456789ABCDEF") - 1) * 16 ^ (LEN(m.hex) - i)
    NEXT
RETURN m.decimal
 
* Function str2word - Converts low-high format string representation
* to a 16-bit integer (word) value. Useful for unrolling structure
* members containg WORD types.
* 
* Passed: Low-high string representation of 16-bit integer
* Returns: numeric value
FUNCTION Str2Word
PARAMETERS m.wordstr
    PRIVATE i, m.retval
 
    m.retval = 0
    FOR i = 0 TO 8 STEP 8
        m.retval = m.retval + (ASC(m.wordstr) * (2^i))
        m.wordstr = RIGHT(m.wordstr, LEN(m.wordstr) - 1)
    NEXT
RETURN m.retval