删除ASCII颜色代码 [英] Remove ASCII color codes

问题描述

所以，我遇到了问题。我从记录器中捕获了一些东西，输出看起来像这样：

So, I'm having an issue. I'm catching some stuff from a Logger, And the output looks something like this:

11:41:19 [INFO] ←[35;1m[Server] hi←[m

我需要知道如何删除那些讨厌的ASCII颜色代码（或解析它们）。

I need to know how to remove those pesky ASCII color codes (or to parse them).

推荐答案

如果它们完好无损，它们应该由ESC组成（ U + 001B ）加上 [加上以分号分隔的数字列表，再加上 m 。 （请参阅 https://stackoverflow.com/a/9943250/978917 。）在这种情况下，您可以删除它们写作：

If they're intact, they should consist of ESC (U+001B) plus [ plus a semicolon-separated list of numbers, plus m. (See https://stackoverflow.com/a/9943250/978917.) In that case, you can remove them by writing:

final String msgWithoutColorCodes =
    msgWithColorCodes.replaceAll("\u001B\\[[;\\d]*m", "");

。 。 。或者您可以在检查日志时使用 less -r 来利用它们。 ： - ）

. . . or you can take advantage of them by using less -r when examining your logs. :-)

（注意：这是特定于颜色代码。如果你还找到其他ANSI转义序列，你会想要概括一点。我认为相当一般的正则表达式是 \\\\\ [[; \\\\] * * - - / * * [@ - 〜] 。你可能会发现< a href =http://en.wikipedia.org/wiki/ANSI_escape_code =noreferrer> http://en.wikipedia.org/wiki/ANSI_escape_code 有用。）

(Note: this is specific to color codes. If you also find other ANSI escape sequences, you'll want to generalize that a bit. I think a fairly general regex would be \u001B\\[[;\\d]*[ -/]*[@-~]. You may find http://en.wikipedia.org/wiki/ANSI_escape_code to be helpful.)

如果序列不完好无损—也就是说，如果他们以某种方式受到损害—那么你将不得不调查并弄清楚究竟发生了什么错误。

If the sequences are not intact — that is, if they've been mangled in some way — then you'll have to investigate and figure out exactly what mangling has happened.

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