Update Assembly Info

UpdateAssemblyInfo.ps1

[CmdletBinding()]
Param(
    [Parameter(Mandatory = $true)]
    [string]$buildNumberString,

    [Parameter(Mandatory = $false)]
    [string]$informationalVersionString
)
$ErrorActionPreference = 'Stop';

Write-Host "Updating assembly versions"

[Version]$ver = $null
if (-not ([Version]::TryParse($buildNumberString + ".0", [ref]$ver)))
{
    Write-Host "Unable to parse a valid Version number from the buildNumber '$buildNumberString' defaulting to 1.0"
    $ver = [Version]::Parse("1.0")
}
$versionString = $ver.ToString()

if(-not $informationalVersionString) {
    $informationalVersionString = $versionString
    Write-Host "informationalVersionString not provided using $versionString"
}


Function Get-AssemblyAttributeString ($type) {
    if ($type -eq "Informational") { 
        $versionString = $informationalVersionString;
    }
    return "Assembly$($type)Version(""$versionString"")";
}

Get-ChildItem -Recurse -Filter AssemblyInfo.cs | Where-Object { $_.FullName -notlike "*.Tests*" } | ForEach-Object {
    $filename = $_.Directory.ToString() + '\' + $_.Name
    $content = Get-Content $filename | Out-String
    Write-Host -NoNewLine "$informationalVersionString ($buildNumberString) -> $filename"

    $groups = new-object system.collections.arraylist
    $content = ([regex]'\bAssembly(File|Informational)?Version\("[^"]+"\)').Replace($content, {
        [void]$groups.Add($args[0].Groups[1].Value) 
        return (Get-AssemblyAttributeString $args[0].Groups[1].Value)
    })

    @("", "File", "Informational") | ForEach-Object {
        if ($groups -notcontains $_) {
            Write-Host -NoNewLine ", added Assembly$($_)Version"
            $content = $content + "`n[assembly: $(Get-AssemblyAttributeString $_ ))]"
        }
    }
    
    Write-Host
    $content | Out-File $filename -Encoding "UTF8"
}