Public/Get-Version.ps1
|
# Author: Thomas Démoulins <tdemoulins@gmail.com> <# .SYNOPSIS Parses a semver-like object from a string in a flexible manner. .DESCRIPTION This function parses a string containing a semver-like version and returns an object that represents both the version (with up to 4 parts) and optionally a pre-release and a build metadata. The parsing is quite flexible: - the version can be in the middle of a url or sentence - first version found is returned - there can be no hyphen between the version and the pre-release - extra spaces are ignored - optional delimiters can be provided to help parsing the string .EXAMPLE Get-Version 'Last version: 1.2.3 beta 3.' Returns 1.2.3-beta3 .EXAMPLE Get-Version 'https://github.com/atom/atom/releases/download/v1.24.0-beta2/AtomSetup.exe' Return 1.24.0-beta2 .EXAMPLE Get-Version 'http://mirrors.kodi.tv/releases/windows/win32/kodi-17.6-Krypton-x86.exe' -Delimiter '-' Return 17.6 #> function Get-Version { [CmdletBinding()] param( # Version string to parse. [Parameter(Mandatory=$true)] [string] $Version, # Optional delimiter(s) to help locate the version in the string: the version must start and end with one of these chars. [char[]] $Delimiter ) if ($Delimiter) { $delimiters = $Delimiter -join '' @('\', ']', '^', '-') | % { $delimiters = $delimiters.Replace($_, "\$_") } $regex = $Version | Select-String -Pattern "[$delimiters](\d+\.\d+[^$delimiters]*)[$delimiters]" -AllMatches foreach ($match in $regex.Matches) { $reference = [ref] $null if ([AUVersion]::TryParse($match.Groups[1], $reference, $false)) { return $reference.Value } } } return [AUVersion]::Parse($Version, $false) } |