Ansible regex_search/regex_findall - regex

Question

I'm trying to parse the output of a command that returned a line like this (there's more output, but this is the line that I'm after):
Remaining Time: 3 Minutes and 12 Seconds
And when there is no time left it returns a line like this:
Remaining Time: 0 Seconds
I'd like to extract the amount of minutes and seconds, so I can feed it to GNU date -d. First I tried this:
- name: determine how much time we have left
set_fact:
time_left: "{{ cmd_output.stdout | regex_search(time_left_regex, '\\1', '\\2') | join(' ') }}"
vars:
time_left_regex: 'Remaining Time: ([0-9]+ Minutes) and ([0-9]+ Seconds)'
But this does not handle the case when there is no time left. So I then tried something like this:
- name: determine how much time we have left
set_fact:
time_left: "{{ cmd_output.stdout | regex_findall(time_left_regex, '\\1') }}"
vars:
time_left_regex: 'Next Execution:.*([0-9]{1,2} (Minutes|Seconds))'
But this only returns something like:
ok: [localhost] => {
"msg": "time left: [[u'2 Seconds', u'Seconds']]" }
I think I'm on the right track but I need a better regex, so maybe somebody can help me out here?
Thank you so much in advance.

Answer 1

You can make the minutes part optional. The minutes will be in group 1 and the seconds will be in group 2.
Remaining Time: (?:([0-9]+ Minutes) and )?([0-9]+ Seconds)
Regex demo

Answer 2

It's possible to split the string (line) and combine a dictionary. For example
- set_fact:
time_left: "{{ time_left|default({})|
combine({myline[item]: myline[item+1]}) }}"
loop: "{{ range(0, myline|length + 1, 3)|list }}"
vars:
myline: "{{ cmd_output.stdout.split(':').1.split()|reverse|list }}"
- debug:
var: time_left
for various command outputs
cmd_output.stdout: 'Remaining Time: 3 Minutes and 12 Seconds'
cmd_output.stdout: 'Remaining Time: 0 Seconds'
cmd_output.stdout: 'Remaining Time: 2 Days and 7 Hours and 3 Minutes and 12 Seconds'
gives (respectively)
"time_left": {
"Minutes": "3",
"Seconds": "12"
}
"time_left": {
"Seconds": "0"
}
"time_left": {
"Days": "2",
"Hours": "7",
"Minutes": "3",
"Seconds": "12"
}