使用Lua脚本启用bash输出颜色 [英] Enable bash output color with Lua script

问题描述

我有几个Lua脚本运行经验和输出大量的信息，在文本文件和控制台。我想在控制台输出中添加一些颜色，以使其更易于阅读。

I have several Lua scripts that run experiences and output a lot of information, in text files and in the console. I'd like to add some colors in the console output, to make it more readable.

我知道可以使用ANSI escape来对bash脚本的输出进行着色序列。例如：

I know that it's possible to color the output of bash scripts using the ANSI escape sequences. For example :

$ echo -e "This is red->\e[00;31mRED\e[00m"

我试图在Lua中这样做：

I tried to do the same in Lua :

$ lua -e "io.write('This is red->\\e[00;31mRED\\e[00m\n')"

但它不工作。我也尝试用 print（）而不是 io.write（），但结果是一样的。 p>

but it does not work. I also tried with print() instead of io.write(), but the result is the same.

推荐答案

lua -eprint（'This is red-> \27 [31mred\\\
'）

注意\27。每当Lua看到一个 \ 后跟一个十进制数，它会将这个十进制数转换成它的ASCII等效值。我使用\27获得了bash \033 ESC字符。更多信息此处。

Note the \27. Whenever Lua sees a \ followed by a decimal number, it converts this decimal number into its ASCII equivalent. I used \27 to obtain the bash \033 ESC character. More info here.

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