Re: Want to read a whole file as utf-8

[FG via Digitalmars-d-learn]

On 2015-02-04 at 01:56, Namespace wrote:

     FILE* f = fopen(filename.ptr, "rb");
     fseek(f, 0, SEEK_END);
     immutable size_t fsize = ftell(f);
     fseek(f, 0, SEEK_SET);

That's quite a smart way to get the size of the file.

I started with std.file.getSize (which obviously isn't marked as @nogc) and 
ended up with the monstrosity below (which I have only compiled on Windows), so 
I decided not to mention it in my previous post. Wouldn't be the point anyway, 
since I have only shown an example with a single-fill fixed buffer. But here it 
is, rendered useless by your code:

    long getFileSize(const char* cName) @nogc
    {
        version(Windows)
        {
            import core.sys.windows.windows;
            WIN32_FILE_ATTRIBUTE_DATA fad;
            if (!GetFileAttributesExA(cName, 
GET_FILEEX_INFO_LEVELS.GetFileExInfoStandard, &fad))
                return -1;
            ULARGE_INTEGER li;
            li.LowPart = fad.nFileSizeLow;
            li.HighPart = fad.nFileSizeHigh;
            return li.QuadPart;
        }
        else version(Posix)
        {
            import core.sys.posix.sys.stat;
            stat_t statbuf = void;
            if (stat(cName, &statbuf))
                return -1;
            return statbuf.st_size;
        }
    }