rePS

0.1.0

Exercises/Advanced/adv-log-parse/exercise.psd1

                                @{

    Id           = 'adv-log-parse'

    Title        = 'Parse log lines'

    Topic        = 'Advanced'

    Level        = 2

    Platforms    = @('Windows', 'Linux', 'MacOS')

    Tags         = @('regex', 'named-captures', 'datetime', 'pipeline')

    FunctionName = 'ConvertFrom-LogLine'

    Author       = 'rePS'

    Prompt       = @'

Write ConvertFrom-LogLine so it takes log lines from the pipeline (or -Line) in the format

    2026-01-05 12:00:01 [ERROR] Disk full on C:

and outputs objects with:

  Timestamp  [datetime]

  Level      [string]  (uppercase: INFO, WARN, ERROR ...)

  Message    [string]

Lines that do not match the format, or carry an impossible date such as

2026-02-30, are silently skipped.

'@

    Hints        = @(

        'Named captures: (?<Level>[A-Za-z]+) puts the match in $Matches.Level after a successful -match.'

        'A regex can''t know February has 28 days. [datetime]::TryParseExact($s, ''yyyy-MM-dd HH:mm:ss'', [cultureinfo]::InvariantCulture, ''None'', [ref]$dt) returns $false instead of throwing.'

        'Use a process block and only output when -match is $true.'

    )

}