ReadString not reading Unicode text properly 1

[ProgrammerJoe]

I have a Unicode text file. (I can tell because the characters 0xFF and 0xFE are the first two characters in the file and looking at it in a binary editor, I can see that each character is followed by a null character). My problem is this: when I use ReadString, it takes each individual byte from the file and expands it into a two-byte character. So each of the lines that I read in are only one character long, since the second character is a null character. How can I read the Unicode file? I've been tempted to read the file byte-by-byte and copy into memory typecast as a pointer to an array of wchar_t, since it's the only solution I can come up with. Surely there's got to be something more elegant than that.

Here's my code for reading the file (in two ways!):

void CodeSnippet()
{
	CStdioFile	MFCFile;
	CString		CurrLine;
	
	FILE*	RegularFile;
	wchar_t UnicodeLine[200];
		
	if (!MFCFile.Open(_T("c:\\temp\\unicode.txt"), CFile::modeRead | CFile::typeText)) 
	{
		MessageBox(NULL, _T("Cannot open file"), _T("Failure"), MB_ICONEXCLAMATION);
	}

	while (MFCFile.ReadString(CurrLine))
	{
		MessageBox(NULL, CurrLine, _T("Line Read"), MB_ICONINFORMATION);
	}
	MFCFile.Close();

        // alternate way
	RegularFile = fopen("c:\\temp\\unicode.txt", "r");
	if (!RegularFile) {
		fgetws(UnicodeLine, 100, RegularFile);
		MessageBox(NULL, UnicodeLine, _T( "Line Read"), MB_ICONINFORMATION);
	}
	fclose(RegularFile);
}

 

[LazyMe]

You can read the file into memory using ReadFile, specifying it a WCHAR buffer.
Greetings,
Rick

 

[palbano]

do you have _UNICODE defined?

-pete

 

[LazyMe]

That would reverse the problem when trying to read a non-unicode file.
Greetings,
Rick

 

[palbano]

>> That would reverse the problem when trying to read a non-
>> unicode file.

DOH! .... (pete)

LOL

Thanks for the save Rick
-pete

 

[ProgrammerJoe]

Thank you for your help. That function, combined with a wchar_t string did the trick. Here's the test code I wrote:

HANDLE	NewFile;
wchar_t WCharBuffer[101];
DWORD	ReadBytes;

NewFile = CreateFile(_T("c:\\temp\\unicode.txt"), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 
FILE_FLAG_RANDOM_ACCESS, NULL);
ReadFile(NewFile, WCharBuffer, 200, &ReadBytes, NULL);
CloseHandle(NewFile);

 

[novrain]

you may try to open the file with CFile::typeBinary flag.