public/Compare-Version.ps1
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<#
.SYNOPSIS Takes a reference object and a difference object and determines if the reference object is greater than the difference object. .DESCRIPTION Takes a reference object and a difference object and determines if the reference object is greater than the difference object. Example: (reference) 1.0 > 0.1 (difference) would return true .EXAMPLE Compare-Version -ReferenceVersion "1.0.0.0" -DifferenceVersion "2.0.0.0" would return $false .EXAMPLE Compare-Version -ReferenceVersion "2.0.0-beta1" -DifferenceVersion "2.0.0-alpha12" would return $true .PARAMETER ReferenceVersion Version as a string which is on the left side of the greater than equation. .PARAMETER DifferenceVersion Version as a string which is on the right side of the greater than equation. #> function Compare-Version { [CmdletBinding()] param( [Parameter(Mandatory = $true, HelpMessage = "Version as a string which is on the left side of the greater than equation.")] [ValidateNotNullOrEmpty()] [string]$ReferenceVersion, [Parameter(Mandatory = $true, HelpMessage = "Version as a string which is on the right side of the greater than equation.")] [ValidateNotNullOrEmpty()] [string]$DifferenceVersion ) $SemVerRegex = "^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$" $SystemVersionRegex = "^(\*|\d+(\.\d+){0,3}(\.\*)?)$" $NumberOnlyRegex = "^[0-9]+$" if ((($ReferenceVersion -match $SemVerRegex) -and ($DifferenceVersion -match $SemVerRegex)) -or (($ReferenceVersion -match $NumberOnlyRegex) -and ($DifferenceVersion -match $NumberOnlyRegex))) { if ([System.Management.Automation.SemanticVersion]$ReferenceVersion -ge [System.Management.Automation.SemanticVersion]$DifferenceVersion) { return $false } else { return $true } } elseif (($ReferenceVersion -match $SystemVersionRegex) -and ($DifferenceVersion -match $SystemVersionRegex)) { if ([System.Version]$ReferenceVersion -ge [System.Version]$DifferenceVersion) { return $false } else { return $true } } else { throw "One or more input objects not a Semantic Version or System.Version" } } |