Get-VersionInfo.psm1

# Get AssemblyInfo.cs VersionInfo
function Get-Csharp-Project-AssemblyInfo([string] $projectFile){
    try{
        #vars
        $majorVersion = "1"
        $minorVersion = "0"
        $buildNumber = "0"
        
        #validate assemblyFileName
        $dir = Split-Path $projectFile -Parent
        $assemblyFileName =  Join-Path -Path $dir  -ChildPath "Properties" | Join-Path -ChildPath "Assemblyinfo.cs" 
        #
        if( !(Test-Path $assemblyFileName -PathType Leaf ) ) {
            $msg = "Assembly info is missing [$assemblyFileName]."
            
            Write-Warning $msg
            throw $msg
        }
        # find version info
        $versionPattern='^\[assembly: AssemblyVersion\(\s*"(?<major>[1-9]+[0-9]*)\.(?<minor>[0-9]+)\.(?<build>[0-9]+)(\.[0-9]+)?"\s*\)\]'
        (Get-Content $assemblyFileName) | Foreach-Object { if($_ -match $versionPattern) { $majorVersion=$matches["major"]; $minorVersion=$matches["minor"]; $buildNumber=$matches["build"] } }
        return "$majorVersion.$minorVersion.$buildNumber"
    }
    catch{
        Write-Warning "Cann't set assembly info [$projectFile]."
        return $null
    }
}
# Get c# project VersionInfo
function Get-Csharp-Project-VersionInfo([string] $projectFile, $version){
    try{
        #vars
        $majorVersion = "1"
        $minorVersion = "0"
        $buildNumber = "0"
        
        # find version info
        $versionPattern='<Version>((?<major>[1-9]+[0-9]*)\.(?<minor>[0-9]+)\.(?<build>[0-9]+)(\.[0-9]+)?)</Version>'
        (Get-Content $projectFile) | Foreach-Object { if($_ -match $versionPattern) { $majorVersion=$matches["major"]; $minorVersion=$matches["minor"]; $buildNumber=$matches["build"] } }
        return "$majorVersion.$minorVersion.$buildNumber"
    }
    catch{
        Write-Warning "Cann't set version info [$projectFile]."
        return $null
    }
}
# Process c# proj
function Get-Csharp-Project([string] $projectFile){
    #
    $textVersion = $null
    #
    try{
        [xml] $project = Get-Content $projectFile
        if ($project.Project.Sdk.Length -eq 0){
            Write-Verbose "Using AssemblyInfo.cs [$(Split-Path $projectFile -Leaf)]"
            $textVersion = Get-Csharp-Project-AssemblyInfo $projectFile 
        }
        else{
            $textVersion = Get-Csharp-Project-VersionInfo $projectFile
        }
        if ( $null -ne $textVersion){
            return @{ Project=[System.IO.Path]::GetFileNameWithoutExtension($projectFile); Version = $textVersion }
        }
    }
    catch{
        Write-Warning "Not valid project file [$projectFile]."
        return $null
    }
}
# Process sln file
function Get-VisualStudio-Solution([string] $slnFile){
    try{
        # get all projects
        $projects = Get-Content $slnFile |
                     Where-Object { $_ -match "^Project" } | 
                     ForEach-Object { $_ -match ".*=(.*)$" | out-null ; $matches[1] } | 
                     ForEach-Object { $_.Split(",")[1].Trim().Trim('"') } |
                     Where-Object { $_ -match ".*\.csproj$" }
        
        #
        $dir = Split-Path $slnFile -Parent

        $version = @{}
        #process
        foreach($p in $projects){
            Write-Verbose "Processing project: $p"
            $prj =  Join-Path -Path $dir -ChildPath $p
            $tmp = Get-Csharp-Project $prj
            if($null -ne $tmp){
                foreach($k in $tmp){
                    if(-not $version.ContainsKey($k.Project)){
                        $version.Add($k.Project, $k.Version)  
                    }
                }
            }
        }
        return $version
    }
    catch{
        throw "Not valid solution file [$slnFile]."
    }
}
<#
.Synopsis
   Automatic Version Tool (AVT)
.DESCRIPTION
  Get VersionInfo
.EXAMPLE
   Get-VersionInfo D:\Projects\project.csproj
.EXAMPLE
   Get-VersionInfo D:\Projects\project.sln
#>

function Get-VersionInfo
{
    [CmdletBinding()]
    [Alias()]
    [OutputType([hashtable])]
    Param
    (
        # Project/Solution file (csproj,sln)
        [string]
        [Parameter(Mandatory=$true, ValueFromPipelineByPropertyName=$false, HelpMessage="Project file.")]
        $File
    )
    Begin
    {
        if( !(Test-Path $File -PathType Leaf ) ) {
            throw "File is missing [$File]."
        }
    }
    Process
    {
        if ($File -like '*.csproj') {
            $tmp = Get-Csharp-Project $File
            return @{ $tmp.Project=$tmp.Version }
        }
        elseif ($File -like '*.sln') {
            return Get-VisualStudio-Solution $File 
        }
        else{
            throw "Not supported [$File]."
        }
    }
    End
    {
    }
}
Export-ModuleMember -Function Get-VersionInfo

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