Re: How-to: input/output "Japanese Characters"?

Georg Wrede Sun, 03 May 2009 09:25:09 -0700

Carlos Smith wrote:

"Georg Wrede" <[email protected]> a écrit dans le message de news:

import std.stdio;

void main()
{
    auto lin = readln();
    writeln(lin);
}

Works with your Japanese strings. It just works(tm).


I am trying this on a North American WinXP station.
I am using DMD V1.



Sorry, somebody else has to help, I'm not using Windows. :/

You will find a small program at the end of this
message who does not work for me.

The console use Lucida COnsole font. The CP is 65001.
cmd.exe can read/write utf strings, but not my
program.

I want to be able to read an utf string from stdin.
That string will contains characters > 256, ie glyphs
you can only see with an unicode font.

I have read some documentation on MSDN that confirm
it can't work. So why does it work for you ?

Can anyone, explain to me what am i doing wrong ?

Thanks a lot...

--------- program ----------
//
//  readln.d
//  testing readln()
//
//  This file saved with BOM: FF FE
//  Edit with Lucida Console font
//

import std.stdio;
import std.c.windows.windows;
import std.c.locale;
import std.utf;

extern( Windows )
{
 HANDLE GetStdHandle( DWORD nStdHandle );
 BOOL WriteConsoleW(
   HANDLE hConsoleOutput,
   in VOID* lpBuffer,
   DWORD nNumberOfCharsToWrite,
   DWORD* lpNumberOfCharsWritten,
   void* lpReserved = null );
 BOOL WriteConsoleA(
   HANDLE hConsoleOutput,
   in VOID* lpBuffer,
   DWORD nNumberOfCharsToWrite,
   DWORD* lpNumberOfCharsWritten,
   void* lpReserved = null );

BOOL ReadConsoleW( HANDLE hConsoleInput, LPVOID lpBuffer, uintnNumberOfCharsToRead,

   uint* lpNumberOfCharsRead, void* pInputControl = null );

BOOL ReadConsoleA( HANDLE hConsoleInput, LPVOID lpBuffer, uintnNumberOfCharsToRead,

   uint* lpNumberOfCharsRead, void* pInputControl = null );
 version (UNICODE)
   alias ReadConsoleA ReadConsole;
 else
   alias ReadConsoleW ReadConsole;
}


UINT CP, OCP;

void DisplayCP()
{
 writef("Console CP: %s\n", GetConsoleCP());
 writef("Console Output CP: %s\n", GetConsoleOutputCP());
}

void SaveCP()
{
 CP = GetConsoleCP();
 OCP = GetConsoleOutputCP();
}

void SetUnicode()
{
 SetConsoleCP( 65001 );
 SetConsoleOutputCP( 65001 );
}

void ResetCP()
{
 SetConsoleCP( CP );
 SetConsoleOutputCP( OCP );
}

int main( )
{
 HANDLE cout;
 DWORD nw;
 cout = GetStdHandle(STD_OUTPUT_HANDLE);

 DisplayCP();
 SaveCP();
 SetUnicode();
 DisplayCP();

 // writef() do print Unicode string constant
 // next 5 lines contains utf chars.
 wchar[] utfstr = "←↑→↔↨∂∆∏∑−√∞∟∩∫≈═┼┴⌠⌐≥≤≡≠ѕєіїњљ\n";
 writef("1: %s","←↑→↔↨∂∆∏∑−√∞∟∩∫≈═┼┴⌠⌐≥≤≡≠ѕєіїњљ\n");
 writef("2: %s",utfstr);
 // so do WriteConsoleW()
 wchar[] utfstr3 = "3: ←↑→↔↨∂∆∏∑−√∞∟∩∫≈═┼┴⌠⌐≥≤≡≠ѕєіїњљ\n";
 WriteConsoleW(cout, utfstr3.ptr, utfstr3.length, &nw);

 // but not  readln()`ed strings
 writef("Type a line of Unicode characters:\n");
 auto line = readln();
 writef("line len: %s\n", line.length);
 writef("%s\n", "Next line is what You typed:");
 writef("%s\n",line);
 writef("%s\n", "Your line again (with WriteConsoleA):");
 WriteConsoleA(cout, line.ptr, line.length, &nw);
 writef("%s\n", "Your line again (with WriteConsoleW):");
 WriteConsoleW(cout, line.ptr, line.length, &nw);


 writef("Done. Resetting code page.\n");
 ResetCP();
 DisplayCP();
 return 0;
}
--------- eof ---------

Re: How-to: input/output "Japanese Characters"?

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