regex_replace

[fusillator]

hi all I don't get why the following regexp replacement matches

vars:

    monit_pkgname: "prefixmonit-5.25.3-1"

   

tasks:

- name: debug
    debug:
      msg: "{{ monit_pkgname_release }}"

    vars:

      monit_pkgname_release: "{{ (monit_pkgname|regex_replace('(?<!prefix)monit-[0-9]+(?:\\.[0-9]+)*-([0-9]+)', '\\1')).split('.') }}"

TASK [debug] ******************************************************************************************************************************************************************
ok: [capsule] => {
    "msg": "[u'finecomonit-5', u'25', u'3-1']"
}

from regexp manual

(?<!...)

Matches if the current position in the string is not preceded by a match for .... This is called a negative lookbehind assertion.

The same happens with caret

vars:

  monit_pkgname_version: "{{ (monit_pkgname|regex_replace('^monit-([0-9]+(?:\\.[0-9]+)*)-[0-9]+', '\\1')).split('.') }}"

The aim would be made the replacement not happen if there's a prefix in monit_pkgname-

any idea?

[fusillator]

Solved

 monit_pkgname_version: "{{ (monit_pkgname|regex_replace('monit-([0-9]+(?:\\.[0-9]+)*)-[0-9]+', '\\1')).split('.') if monit_pkgname|regex_search('^monit-') else None }}"
 monit_pkgname_release: "{{ (monit_pkgname|regex_replace('monit-[0-9]+(?:\\.[0-9]+)*-([0-9]+)', '\\1')).split('.') if monit_pkgname|regex_search('^monit-') else None }}"

[Raghavendra Rao]

ok

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