在 Ruby 中转义字符串中的双反斜杠和单反斜杠

发布于 2024-08-31 18:54:00 字数 511 浏览 8 评论 0原文

我正在尝试以这样的格式访问 Windows 平台上 ruby​​ 脚本中的网络路径。

\\servername\some windows share\folder 1\folder2\

现在,如果我尝试使用它作为路径,它将不起作用。此脚本未正确转义单个反斜杠。

path = "\\servername\some windows share\folder 1\folder2\"
d = Dir.new(path)

我尝试了一切我能想到的方法来正确地避开路径中的斜线。然而我无法逃避那个反斜杠——因为它有特殊的含义。我尝试过单引号、双引号、转义反斜杠本身、使用备用引号(例如 %Q{} 或 %q{})、使用 ascii 到 char 转换。从某种意义上说,如果我做得不对,那么一切都不起作用。 :-) 现在的临时解决方案是映射一个网络驱动器 N:\ 指向该路径并以这种方式访问​​它,但这不是解决方案。

有谁知道如何正确转义单反斜杠?

谢谢

I'm trying to access a network path in my ruby script on a windows platform in a format like this.

\\servername\some windows share\folder 1\folder2\

Now If I try to use this as a path, it won't work. Single backslashes are not properly escaped for this script.

path = "\\servername\some windows share\folder 1\folder2\"
d = Dir.new(path)

I tried everything I could think of to properly escape slashes in the path. However I can't escape that single backslash - because of it's special meaning. I tried single quotes, double quotes, escaping backslash itself, using alternate quotes such as %Q{} or %q{}, using ascii to char conversion. Nothing works in a sense that I'm not doing it right. :-) Right now the temp solution is to Map a network drive N:\ pointing to that path and access it that way, but that not a solution.

Does anyone have any idea how to properly escape single backslashes?

Thank you

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情话已封尘 2024-09-07 18:54:00

只需将每个反斜杠加倍即可,如下所示:

"\\\\servername\\some windows share\\folder 1\\folder2\\"

Just double-up every backslash, like so:

"\\\\servername\\some windows share\\folder 1\\folder2\\"
偷得浮生 2024-09-07 18:54:00

试试这个

puts '\\\\servername\some windows share\folder 1\folder2\\'
#=> \\servername\some windows share\folder 1\folder2\

只要您使用单引号来定义字符串(例如,'foo'),就不需要转义单个\除了以下两种情况

  1. \\ 本身会生成一个 \。因此, \\\\ 将为您提供所需的起始 \\
  2. 路径末尾的尾随 \ 将尝试转义结束引号,因此您还需要一个 \\

或者,

您可以为自己定义一个优雅的助手。您可以将 / 与如下方法结合使用,而不是使用笨重的 \ 路径分隔符:

def windows_path(foo)
  foo.gsub('/', '\\')
end

puts windows_path '//servername/some windows share/folder 1/folder2/'
#=> \\servername\some windows share\folder 1\folder2\

Sweet!

Try this

puts '\\\\servername\some windows share\folder 1\folder2\\'
#=> \\servername\some windows share\folder 1\folder2\

So long as you're using single quotes to define your string(e.g., 'foo'), a single \ does not need to be escaped. except in the following two cases

  1. \\ works itself out to a single \. So, \\\\ will give you the starting \\ you need.
  2. The trailing \ at the end of your path will tries to escape the closing quote so you need a \\ there as well.

Alternatively,

You could define an elegant helper for yourself. Instead of using the clunky \ path separators, you could use / in conjunction with a method like this:

def windows_path(foo)
  foo.gsub('/', '\\')
end

puts windows_path '//servername/some windows share/folder 1/folder2/'
#=> \\servername\some windows share\folder 1\folder2\

Sweet!

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