C / C++ / MFC

<br />
int IsUnicodeFile(char* szFileName)<br />
{<br />
    FILE *fpUnicode;<br />
    char l_szCharBuffer[80];<br />
<br />
    //Open the file<br />
    if((fpUnicode= fopen(szFileName,"r")) == NULL)<br />
    return 0; //Unable to open file<br />
<br />
    if(!feof(fpUnicode))<br />
    {<br />
        fread(l_szCharBuffer,80,1,fpUnicode);<br />
        fclose(fpUnicode);<br />
        if(IsTextUnicode(l_szCharBuffer,80,NULL))<br />
        {<br />
            return 2; //Text is Unicode<br />
        }<br />
        else<br />
        {<br />
            return 1; //Text is ASCII<br />
        }<br />
    }<br />
    return 0; // Some error happened<br />
}<br />

sandeepkavade wrote:

is there any api to check whether the file contains unicode, utf-8 or ansi characters?

Nibu babu thomas wrote:

First few bytes of a file determine the nature of a file...

If the first three bytes of a file are EF, BB and BF, the file is a UTF-8 file.
If the first two bytes are FE and FF, the file is a Unicode file.

Nemanja Trifunovic wrote:

UTF-8 is not required to start with a byte-order mark, and files with UTF-16LE and UTF-16BE encodings are actually forbiden to start with it.

KirkNarine wrote:

What is the best way...

KirkNarine wrote:

I've heard of using boost libraries. Any suggestions or comments?