I use a library that adds ANSI colors / styles to strings. For example:
我使用一个库,为字符串添加ANSI颜色/样式。例如:
> "Hello World".rgb(255, 255, 255)
'\u001b[38;5;231mHello World\u001b[0m'
> "Hello World".rgb(255, 255, 255).bold()
'\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m'
When I do:
当我做:
console.log('\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m')
a "Hello World"
white and bold message will be output.
将输出“Hello World”白色和粗体消息。
Having a string like '\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m'
how can these elements be removed?
有一个字符串,如'\ u001b [1m \ u001b [38; 5; 231mHello World \ u001b [0m \ u001b [22m'如何删除这些元素?
foo('\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m') //=> "Hello World"
Maybe a good regular expression? Or is there any built-in feature?
也许一个好的正则表达式?或者是否有任何内置功能?
The work around I was thinking was to create child process:
我正在考虑的工作是创建子进程:
require("child_process")
.exec("node -pe \"console.error('\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m')\""
, function (err, stderr, stdout) { console.log(stdout);
});
But the output is the same...
但输出是一样的......
2 个解决方案
#1
27
The regex you should be using is
你应该使用的正则表达式是
/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g
This matches most of the ANSI escape codes, beyond just colors, including the extended VT100 codes, archaic/proprietary printer codes, etc.
这匹配大多数ANSI转义码,不仅仅是颜色,包括扩展的VT100代码,古老的/专有的打印机代码等。
Note that the \u001b
in the above regex may not work for your particular library (even though it should); check out my answer to a similar question regarding acceptable escape characters if it doesn't.
请注意,上述正则表达式中的\ u001b可能不适用于您的特定库(即使它应该);如果没有,请查看关于可接受的转义字符的类似问题的答案。
If you don't like regexes, you can always use the strip-ansi
package.
如果你不喜欢正则表达式,你可以随时使用strip-ansi包。
For instance, the string jumpUpAndRed
below contains ANSI codes for jumping to the previous line, writing some red text, and then going back to the beginning of the next line - of which require suffixes other than m
.
例如,下面的字符串jumpUpAndRed包含用于跳转到上一行的ANSI代码,写入一些红色文本,然后返回到下一行的开头 - 其中需要m之外的后缀。
var jumpUpAndRed = "\x1b[F\x1b[31;1mHello, there!\x1b[m\x1b[E";
var justText = jumpUpAndRed.replace(
/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '');
console.log(justText);
#2
5
The escape character is \u001b
, and the sequence from [
until first m
is encountered is the styling. You just need to remove that. So, replace globally using the following pattern:
转义字符是\ u001b,遇到[直到第一个m的顺序是样式。你只需要删除它。因此,使用以下模式替换全局:
/\u001b\[.*?m/g
Thus,
从而,
'\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m'.replace(/\u001b\[.*?m/g, '')
#1
27
The regex you should be using is
你应该使用的正则表达式是
/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g
This matches most of the ANSI escape codes, beyond just colors, including the extended VT100 codes, archaic/proprietary printer codes, etc.
这匹配大多数ANSI转义码,不仅仅是颜色,包括扩展的VT100代码,古老的/专有的打印机代码等。
Note that the \u001b
in the above regex may not work for your particular library (even though it should); check out my answer to a similar question regarding acceptable escape characters if it doesn't.
请注意,上述正则表达式中的\ u001b可能不适用于您的特定库(即使它应该);如果没有,请查看关于可接受的转义字符的类似问题的答案。
If you don't like regexes, you can always use the strip-ansi
package.
如果你不喜欢正则表达式,你可以随时使用strip-ansi包。
For instance, the string jumpUpAndRed
below contains ANSI codes for jumping to the previous line, writing some red text, and then going back to the beginning of the next line - of which require suffixes other than m
.
例如,下面的字符串jumpUpAndRed包含用于跳转到上一行的ANSI代码,写入一些红色文本,然后返回到下一行的开头 - 其中需要m之外的后缀。
var jumpUpAndRed = "\x1b[F\x1b[31;1mHello, there!\x1b[m\x1b[E";
var justText = jumpUpAndRed.replace(
/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '');
console.log(justText);
#2
5
The escape character is \u001b
, and the sequence from [
until first m
is encountered is the styling. You just need to remove that. So, replace globally using the following pattern:
转义字符是\ u001b,遇到[直到第一个m的顺序是样式。你只需要删除它。因此,使用以下模式替换全局:
/\u001b\[.*?m/g
Thus,
从而,
'\u001b[1m\u001b[38;5;231mHello World\u001b[0m\u001b[22m'.replace(/\u001b\[.*?m/g, '')