CODEWITHSUNDEEP
regexansible
Julia L
Julia L

Reputation: 57

Ansible regex search unknown escape character

I need to extract SERVER1 from a string like this: directory/SERVER1-info.dat According to regex101.com, this regex string correctly parses it: (?<=\/)(\w*)(?=-) but in Ansible, "{{ filename | regex_search('?<=/')('\w*')('?=-') }}" causes an error "found unknown escape character 'w'\n\n errors.

I've tried removing the single quotes and doing \\w, all these give more templating errors.

Upvotes: 1

Views: 3027

Answers (1)

Vladimir Botka
Vladimir Botka

Reputation: 67984

If you want to select the string between the slash / and dash -, the task below does the job

    - debug:
        msg: "{{ path|regex_replace(regex, replace) }}"
      vars:
        path: directory/SERVER1-info.dat
        regex: '^(.*)/(.*)-(.*)$'
        replace: '\2'

gives

  msg: SERVER1

If you'd like to avoid regex the task below gives the same result

    - debug:
        msg: "{{ (path|basename).split('-').0 }}"
      vars:
        path: directory/SERVER1-info.dat

Upvotes: 2

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