Re: What is the alternative to the setlocale function of c in D? Thank you.

[John Chapman via Digitalmars-d-learn]

On Sunday, 27 January 2019 at 16:23:42 UTC, FrankLike wrote:
On Sunday, 27 January 2019 at 10:44:04 UTC, John Chapman wrote:
On Sunday, 27 January 2019 at 06:14:15 UTC, FrankLike wrote:
On Saturday, 26 January 2019 at 09:33:33 UTC, John Chapman 
wrote:


What has that code got to do with setting the console's 
font? So you need to add more code to accomplish that.

You don't need to set the font to achieve the goal, why not?

This should work:

const(char)[] toCodePage(const(char)[] s, uint codePage = 0) {
  import core.sys.windows.winnls, std.utf;

  foreach (char c; s) {
    if (c >= 0x80) {
      auto temp = s.toUTF16z();
      char[] result;
      if ((result.length = WideCharToMultiByte(codePage, 0, 
temp, -1, null, 0, null, null)) != 0)
        WideCharToMultiByte(codePage, 0, temp, -1, result.ptr, 
cast(int)result.length, null, null);
      return result;
    }
  }
  return s;
}

void main() {
  import core.sys.windows.wincon, std.stdio;

  SetConsoleOutputCP(936); // Simplified Chinese codepage
  writeln("字符".toCodePage(936));
}
Yes.
////////////////////////////////////////
extern(C) int setlocale(int,char*);

static this()
{
        import core.stdc.wchar_;
        import core.stdc.stdio;
        fwide(core.stdc.stdio.stdout,1);
        setlocale(0,cast(char*)"china");
}
///////////////////////////////////////////
it's simple than yours,and don't need convert every string,why 
not work after D2.0.78.1?

I've no idea, sorry. A quick scan of D's changelogs between those 
versions doesn't reveal anything relevant. But I wonder how your 
code ever worked - on Windows, calling setlocale with "china" 
returns null, which means it's not a valid locale, so did nothing.

This does the right thing:

  extern(C) int _cwprintf(const(wchar)*, ...);

  void main() {
    SetConsoleOutputCP(936);
    _cwprintf("字符\n");
  }