Can we get rid of non-raw write?
via Digitalmars-d
digitalmars-d at puremagic.com
Wed Apr 15 10:53:23 PDT 2015
On Wednesday, 15 April 2015 at 15:17:27 UTC, Jürgen Reichmann
wrote:
> On Wednesday, 15 April 2015 at 14:47:46 UTC, armando sano wrote:
>> Reviving old topic... It is possible to force stdout to write
>> in binary mode on Windows, see
>> https://msdn.microsoft.com/en-us/library/tw4k6df8.aspx
>>
>> In C, the solution is:
>>
>> -----------------------------
>> #include <stdio.h>
>> #include <fcntl.h>
>> #include <io.h>
>>
>> /*...*/
>>
>> int result = _setmode( _fileno( stdout ), _O_BINARY );
>> if ( result == -1 )
>> perror ("Cannot set stdout to binary mode");
>> else
>> perror ("stdout set to binary mode");
>> ------------------------------
>>
>>
>> In Python, the solution is:
>>
>> ------------------------------
>> import platform
>> if platform.system() == "Windows":
>> import os, msvcrt
>> msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
>> ------------------------------
>>
>> Since D can interface C, it must be possible to do the same in
>> D? (how, I am not sure)
>
> my humble solution:
>
> void setFileModeBinary(File f)
> {
> import std.c.stdlib;
> version(Windows) {
> immutable fd = _fileno(f.getFP);
> f.flush();
> _setmode(fd, _O_BINARY);
> version(DigitalMars) {
> // @@@BUG@@@ 4243
> immutable info = __fhnd_info[fd];
> __fhnd_info[fd] &= ~FHND_TEXT;
> }
> }
> }
Sorry, solution above is no longer valid.
Version below works for DMD 2.066 and 2.067 (tested for X86).
void setFileModeBinary(File f, bool setBinary = true)
{
// extracted from phobos stdio rawWrite
version(Windows) {
import std.stdio, std.c.stdlib;
f.flush(); // before changing translation mode
immutable fd = _fileno(f.getFP);
if (setBinary) {
_setmode(fd, _O_BINARY);
version(CRuntime_DigitalMars) { // D2.067
import core.atomic;
// @@@BUG@@@ 4243
atomicOp!"&="(__fhnd_info[fd], ~FHND_TEXT);
} else version(DigitalMars) { // D2.066
version (Win32) {
import core.atomic;
// @@@BUG@@@ 4243
atomicOp!"&="(__fhnd_info[fd], ~FHND_TEXT);
}
}
} else {
version (MICROSOFT_STDIO) {}
else {
enum _O_TEXT = 0x4000;
}
_setmode(fd, _O_TEXT);
version(CRuntime_DigitalMars) { // D2.067
import core.atomic;
// @@@BUG@@@ 4243
atomicOp!"&="(__fhnd_info[fd], ~FHND_TEXT);
} else version(DigitalMars) { // D2.066
version (Win32) {
import core.atomic;
// @@@BUG@@@ 4243
atomicOp!"|="(__fhnd_info[fd], FHND_TEXT);
}
}
}
}
}
IMO a function like this belongs in Phobos stdio
jürgen
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