粗体文本通过C ++写语句 [英] Bold text through C++ write statement

问题描述

我通过telnet工作在字典服务器上，我希望以下面的格式返回：

I'm working on a dictionary server via telnet, and I'd like it to return it in this format:

  **word** (wordType): wordDef wordDef wordDef wordDef
wordDef wordDef wordDef.

现在我输出代码：

write( my_socket, ("%s", word.data()    ), word.length()    ); // Bold this
write( my_socket, ("%s", theRest.data() ), theRest.length() );

所以我想把第一行加粗。

So I'd like that first line to be bolded.

对不起，我忘了提到这是一个命令行。

Sorry, I forgot to mention that this is for a command line.

推荐答案

请考虑使用类似 VT100转义序列。由于您的服务器是基于telnet的用户可能有一个客户端支持各种终端模式。

Consider using using something like VT100 escape sequences. Since your server is telnet based the user is likely to have a client that supports various terminal modes.

例如，如果你想为VT100终端打开粗体，输出

For instance if you wanted to turn on bold for a VT100 terminal you would output

ESC[1m

其中ESC是字符值0x1b。要切换回正常的格式化输出

where "ESC" is the character value 0x1b. To switch back to normal formatting output

ESC[0m

要在您的应用程序中使用它，您可以将问题中的示例行更改为以下内容。

To use this in your application you can change the example lines from your question to the following.

std::string str = "Hello!"
write( my_socket, "\x1b[1m", 4); // Turn on bold formatting
write( my_socket, str.c_str(), str.size()); // output string
write( my_socket, "\x1b[0m", 4); // Turn all formatting off

有其他终端模式，如VT52，VT220等。使用 ncurses 查看，虽然如果您需要的只是简单的粗体/ 。

There other terminal modes such as VT52, VT220, etc. You might want to look into using ncurses although it might be a bit heavy if all you need is simple bold on/off.

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