file_len.c

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/* get file length by filename */

#include "fb.h"

fb_off_t fb_FileLenEx( const char *filename )
{
        FILE *fp;
        fb_off_t len;
        
        fp = fopen( filename, "rb" );   
        if( fp != NULL )
        {
                if( fseeko( fp, 0, SEEK_END ) == 0 ) 
                {
                        if( (len = ftello( fp )) != -1 ) 
                        {
                                fclose( fp );
                                fb_ErrorSetNum( FB_RTERROR_OK );
                                return len;
                        }
                }

                fclose( fp );
        }

        fb_ErrorSetNum( FB_RTERROR_ILLEGALFUNCTIONCALL );
        return 0;
}

FBCALL long long fb_FileLen( const char *filename )
{
        return fb_FileLenEx( filename );
}