从控制台读取UTF-8字符 [英] Reading UTF-8 characters from console

问题描述

我正在尝试从控制台为我的C ++应用程序读取UTF-8编码的波兰语字符. 我确定控制台使用此代码页(已签入属性). 我已经尝试过的:

I'm trying to read UTF-8 encoded polish characters from console for my c++ application. I'm sure that console uses this code page (checked in properties). What I have already tried:

• 使用cin-而不是zażółć"，我读为"za \ 0 \ 0 \ 0 \ 0"
• 使用wcin-而不是zażółć"-与cin相同的结果
• 使用scanf-而不是'zażółć\ 0'，我读为'za \ 0 \ 0 \ 0 \ 0 \ 0'
• 使用wscanf-与scanf相同的结果
• 使用getchar一次读取字符-与scanf相同的结果

在主要功能的开头，我有以下几行:

On the beginning of the main function I have following lines:

setlocale(LC_ALL, "PL_pl.UTF-8");
SetConsoleOutputCP(CP_UTF8);
SetConsoleCP(CP_UTF8);

我真的很乐意提供帮助.

I would be really greatful for help.

推荐答案

这是我用于UTF-8支持的技巧.结果是多字节字符串，可以在其他地方使用

Here is the trick I use for UTF-8 support. The result is multibyte string which could be then used elsewhere:

#include <cstdio>
#include <windows.h>
#define MAX_INPUT_LENGTH 255

int main()
{

    SetConsoleOutputCP(CP_UTF8);
    SetConsoleCP(CP_UTF8);

    wchar_t wstr[MAX_INPUT_LENGTH];
    char mb_str[MAX_INPUT_LENGTH * 3 + 1];

    unsigned long read;
    void *con = GetStdHandle(STD_INPUT_HANDLE);

    ReadConsole(con, wstr, MAX_INPUT_LENGTH, &read, NULL);

    int size = WideCharToMultiByte(CP_UTF8, 0, wstr, read, mb_str, sizeof(mb_str), NULL, NULL);
    mb_str[size] = 0;

    std::printf("ENTERED: %s\n", mb_str);

    return 0;
}

应如下所示:

P.S.非常感谢Remy Lebeau指出了一些缺陷！

P.S. Big thanks to Remy Lebeau for pointing out some flaws!

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