我正在尝试使用regex_replace命令提取子字符串.我想在这里提取"SWIFTInward" [英] I am trying to extract a substring using regex_replace command . I want to extract “SWIFTInward” here

问题描述

我在Ansible中尝试了以下代码

I tried below code in Ansible

---
- hosts: windows
  strategy: linear

  vars:
    war_file_path: F:\\Install\\IIBProjects\\DE\\WAR\\DE_SWIFTInward-202010.0.0.war

  tasks:
    - name: Get properties folder path for windows
      set_fact:
        endpointDetails: "{{ item | win_basename | regex_replace('\\\\(?:(?!\\\\).)*$', '') }}"
      with_items:
        - "{{ war_file_path }}"
      register: war_file_name
      when: ansible_os_family == "Windows"

期望输出: SWIFTInward
我得到的错误输出: DE_SWIFTInward-202010.0.0.war

推荐答案

您需要

endpointDetails: "{{ item | win_basename | regex_replace('^[^_]*_([^_-]+).*', '\\1') }}"

请参见 regex演示

或者，将 regex_search 与一个简单的 _([^ _-] +)-

Or, use regex_search with a simple _([^_-]+)- regex:

endpointDetails: "{{ item | win_basename | regex_search('(?<=_)[^_-]+') }}"

详细信息

• ^ [^ _] * _([^ _-] +).* :
  • ^ -字符串的开头
  • [^ _] * -除 _
  以外的零个或多个字符
  • _ -一个 _ char
  • ([[^ _-] +)-组1( \ 1 ):一个或多个字符，除了 _ 和-
  • .* -字符串的其余部分.
  • ^[^_]*_([^_-]+).*:
    • ^ - start of a string
    • [^_]* - zero or more chars other than _
    • _ - a _ char
    • ([^_-]+) - Group 1 (\1): one or more chars other than _ and -
    • .* - the rest of the string.
    • (?< = _)-字符串中紧邻 _
    的位置
    • [^ _-] + -一个或多个字符，而不是 _ 和-.
    • (?<=_) - a location in string that is immediately preceded with _
    • [^_-]+ - one or more chars other than _ and -.

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