如何使这个正则表达式更通用？

Question

我正在使用 Ruby 1.8.7。我有一个包含以下内容的文本文件：

"testhost-01.test.de|lan|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|test|wato|/" + FOLDER_PATH + "/",
"testhost-02.test.de|lan|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|prod|puppetagent|wato|/" + FOLDER_PATH + "/",
"testhost-03.test.de|wan|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|prod|puppetagent|wato|/" + FOLDER_PATH + "/",
"testhost-04.test.de|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|dmz|prod|puppetagent|wato|/" + FOLDER_PATH + "/",
"testhost-05.test.de|wan|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|prod|puppetagent|wato|/" + FOLDER_PATH + "/",
"testhost-06.test.de|lan|ip-v4|cmk-agent|tcp|ip-v4-only|site:tir_projects|prod|wato|/" + FOLDER_PATH + "/",
"testhost-07.test.de|ip-v6|cmk-agent|tcp|site:tir_projects|ip-v6-only|dmz|prod|puppetagent|wato|/" + FOLDER_PATH + "/",
"testhost-08.test.de|ip-v4|snmp|snmp-only|ip-v4-only|critical|site:tir_projects|dmz|wato|/" + FOLDER_PATH + "/",

我正在尝试将主机名 (testhost-01.test.de - testhost-08.test.de) 提取到一个数组中，但仅当 "puppetagent" 在同一行时。

结果应该是：

[
  "testhost-02.test.de",
  "testhost-03.test.de",
  "testhost-04.test.de",
  "testhost-05.test.de",
  "testhost-07.test.de"
]

代码示例：

path = "Textfile"
file = IO.read(path)
nodes = file.scan(/^"(.*)\|lan.*\|puppetagent/).flatten

上面的这个例子只适用于第一个管道之后的行， "lan" 紧随其后，所以它只找到主机 02.

Answer 1

/^"([^|]*).*puppetagent/

用简单的英语来说，就是

^" 从 "
([^|]*) 捕获任何不是 |
.* 接受就行了
puppetagent 要求 puppetagent 出席

如何使这个正则表达式更通用？

How do I make this regular expression more general?

ruby

regex

ruby-1.8.7