PSDependScripts/GitHub.ps1
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<# .SYNOPSIS Installs a module from a GitHub repository. .DESCRIPTION Installs a module from a GitHub repository. Relevant Dependency metadata: DependencyName (Key): The key for this dependency is used as Name, if none is specified Name: Used to specify the GitHub repository name to download Version: Used to identify existing installs meeting this criteria, and as RequiredVersion for installation. Defaults to 'latest' Target: The folder to download repo to. Created if it doesn't exist. "AllUsers" resolves to: Windows: the system's program files folder. Other: the platform's SHARED_MODULES folder. "CurrentUser" resolves to: Windows: the user's (My)Documents folder. Other: the platform's USER_MODULES folder. It defaults to "AllUsers" on Windows in an elevated session and to "CurrentUser" otherwise. PowerShell uses the "WindowsPowerShell\Modules" folder hierarchy while PowerShell Core uses "PowerShell\Modules". .NOTES Initial idea and some code by Doug Finke. Rewrite by Jonas Thelemann for tag support and PowerShell Core compatibility. A huge thanks to both! https://github.com/dfinke/InstallModuleFromGitHub https://github.com/dargmuesli .PARAMETER PSDependAction Test, install or import the module. Defaults to "Install". Test: Return true or false on whether the dependency is in place. Install: Install the dependency. Import: Import the dependency. .PARAMETER ExtractPath Limit extraction of file(s) and folder(s). .PARAMETER ExtractProject Parse the GitHub repository for a common PowerShell project hierarchy and extract only the project folder. Example: ramblingcookiemonster/psslack looks like this: PSSlack/ Repo root PSSlack/ Module root PSSlack.psd1 Module manifest Tests/ In this case, we would extract PSSlack/PSSlack only. Example: bundyfx/vamp looks like this: vamp/ Repo root (also, module root) vamp.psd1 Module manifest In this case, we would extract the whole root vamp folder. .PARAMETER TargetType How the target is interpreted: Standard: Extract to "target\name" [Default]. Exact: Extract to "target\". Parallel: Extract to "target\name\version" or "target\name\branch\name" depending on the version specified. .PARAMETER Force If specified, delete an already existing target folder (as defined by TargetType). Default: False / not specified. Files are copied to the target folder without any file or folder removal. .EXAMPLE Imagine a GitHub repository containing a PowerShell module with git tags named "1.0.0" and "0.1.0". @{ 'Dargmuesli/powershell-lib' = '1.0.0' } @{ 'Dargmuesli/powershell-lib' = 'latest' } @{ 'Dargmuesli/powershell-lib' = '' } These download version 1.0.0 to "powershell-lib\1.0.0" @{ 'Dargmuesli/powershell-lib' = '0.1.0' } This downloads version 0.1.0 to "powershell-lib\0.1.0" @{ 'Dargmuesli/powershell-lib' = 'master' } This downloads branch "master" (most recent commit version) to "powershell-lib" .EXAMPLE Imagine a GitHub repository containing a PowerShell module with no git tags. @{ 'Dargmuesli/powershell-lib' = 'latest' } @{ 'Dargmuesli/powershell-lib' = '' } @{ 'Dargmuesli/powershell-lib' = 'master' } These download branch "master" (most recent commit version) to "powershell-lib" @{ 'Dargmuesli/powershell-lib' = @{ Version = 'latest' Parameters @{ TargetType = 'Parallel' } } } @{ 'Dargmuesli/powershell-lib' = @{ Parameters @{ TargetType = 'Parallel' } } } @{ 'Dargmuesli/powershell-lib' = @{ Version = 'master' Parameters @{ TargetType = 'Parallel' } } } These download branch "master" (most recent commit version) to "powershell-lib\master\powershell-lib" @{ 'Dargmuesli/powershell-lib' = @{ Version = 'feature' Parameters @{ TargetType = 'Parallel' } } } This downloads branch "feature" (most recent commit version) to "powershell-lib\feature\powershell-lib" .EXAMPLE @{ 'powershell/demo_ci' = @{ Version = 'latest' DependencyType = 'GitHub' Target = 'C:\T' Parameters = @{ ExtractPath = 'Assets/DscPipelineTools', 'InfraDNS/Configs/DNSServer.ps1' TargetType = 'Exact' } } } # This downloads the latest version of demo_ci by powershell from GitHub. # Then it extracts "repo-root/Assets/DscPipelineTools" and "repo-root/InfraDNS/Configs/DNSServer.ps1" to the target. #> [cmdletbinding()] param( [PSTypeName('PSDepend.Dependency')] [psobject[]]$Dependency, [ValidateSet('Test', 'Install', 'Import')] [string[]]$PSDependAction = @('Install'), [string[]]$ExtractPath, [bool]$ExtractProject = $True, [ValidateSet('Parallel', 'Standard', 'Exact')] [string]$TargetType = 'Standard', [switch]$Force ) $script:IsWindows = (-not (Get-Variable -Name "IsWindows" -ErrorAction "Ignore")) -or $IsWindows $script:IsCoreCLR = $PSVersionTable.ContainsKey("PSEdition") -and $PSVersionTable.PSEdition -eq "Core" Write-Verbose -Message "Am I on Windows? [$script:IsWindows]! Am I PS Core? [$script:IsCoreCLR]!" # Extract data from dependency $DependencyID = $Dependency.DependencyName $DependencyVersion = $Dependency.Version $DependencyTarget = $Dependency.Target $DependencyName = $DependencyID.Split("/")[1] # Translate "" to "latest" if($DependencyVersion -eq "") { $DependencyVersion = "latest" } # Check if the version that should be used is a version number if($DependencyVersion -match "^\d+(?:\.\d+)+$") { $DependencyVersion = New-Object "System.Version" $DependencyVersion } if ($script:IsCoreCLR) { $ModuleChildPath = "PowerShell\Modules" } else { $ModuleChildPath = "WindowsPowerShell\Modules" } # Get system installation path if($script:IsWindows) { $AllUsersPath = Join-Path -Path $env:ProgramFiles -ChildPath $ModuleChildPath } else { $AllUsersPath = [System.Management.Automation.Platform]::SelectProductNameForDirectory('SHARED_MODULES') } # Check if the MyDocuments folder path is accessible try { $MyDocumentsFolderPath = [Environment]::GetFolderPath("MyDocuments") } catch { $MyDocumentsFolderPath = $null } # Get user installation path if($script:IsWindows) { if($MyDocumentsFolderPath) { $CurrentUserPath = Join-Path -Path $MyDocumentsFolderPath -ChildPath $ModuleChildPath } else { $CurrentUserPath = Join-Path -Path $HOME -ChildPath "Documents\$ModuleChildPath" } } else { $CurrentUserPath = [System.Management.Automation.Platform]::SelectProductNameForDirectory('USER_MODULES') } # Set target path if($DependencyTarget) { # Resolve scope keywords if($DependencyTarget -Eq "CurrentUser") { $TargetPath = $CurrentUserPath } elseif($DependencyTarget -Eq "AllUsers") { $TargetPath = $AllUsersPath } else { $TargetPath = $DependencyTarget } } else { # Set default target depending on admin permissions if(($script:IsWindows) -And (([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))) { $TargetPath = $AllUsersPath } else { $TargetPath = $CurrentUserPath } } Write-Verbose -Message "Dependency id: [$DependencyID]" Write-Verbose -Message "Dependency version: [$DependencyVersion]" Write-Verbose -Message "Dependency target: [$DependencyTarget]" Write-Verbose -Message "Dependency name: [$DependencyName]" Write-Verbose -Message "Target Path: [$TargetPath]" # Search for an already existing version of the dependency $Module = Get-Module -ListAvailable -Name $DependencyName -ErrorAction SilentlyContinue $ModuleExisting = $null $ModuleExistingMatches = $false $ExistingVersions = $null $ShouldInstall = $false $RemoteAvailable = $false $URL = $null if($Module) { $ModuleExisting = $true } else { $ModuleExisting = $false } if($ModuleExisting) { Write-Verbose "Found existing module [$DependencyName]" $ExistingVersions = $Module | Select-Object -ExpandProperty "Version" # Check if the version that is should be used is a version number if($DependencyVersion -match "^\d+(?:\.\d+)+$") { :versionslocal foreach($ExistingVersion in $ExistingVersions) { switch($ExistingVersion.CompareTo($DependencyVersion)) { {@(-1, 1) -contains $_} { Write-Verbose "For [$DependencyName], the version you specified [$DependencyVersion] does not match the already existing version [$ExistingVersion]" $ShouldInstall = $true break } 0 { Write-Verbose "For [$DependencyName], the version you specified [$DependencyVersion] matches the already existing version [$ExistingVersion]" $ShouldInstall = $false $ModuleExistingMatches = $True break versionslocal } } } } else { # The version that is to be used is probably a GitHub branch name $ShouldInstall = $true } } else { Write-Verbose "Did not find existing module [$DependencyName]" $ShouldInstall = $true } # Skip the case when the version that is to be used already exists if($ShouldInstall) { # API-fetch the tags on GitHub $GitHubVersion = $null $GitHubTag = $null $Page = 0 try { :nullcheck while($GitHubVersion -Eq $null) { $Page++ [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12 $GitHubTags = Invoke-RestMethod -Uri "https://api.github.com/repos/$DependencyID/tags?per_page=100&page=$Page" if($GitHubTags) { foreach($GitHubTag in $GitHubTags) { if($GitHubTag.name -match "^\d+(?:\.\d+)+$" -and ($DependencyVersion -match "^\d+(?:\.\d+)+$" -or $DependencyVersion -eq "latest")) { $GitHubVersion = New-Object "System.Version" $GitHubTag.name if($DependencyVersion -Eq "latest") { $DependencyVersion = $GitHubVersion } switch($DependencyVersion.CompareTo($GitHubVersion)) { -1 { # Version is older compared to the GitHub version, continue searching break } 0 { Write-Verbose "For [$DependencyName], a matching version [$DependencyVersion] has been found in the GitHub tags" $RemoteAvailable = $true break nullcheck } 1 { # Version is newer compared to the GitHub version, which means we can stop searching (given version history is reasonable) break nullcheck } } } } } else { break nullcheck } } } catch { # Repository does not seem to exist or a branch is the target $ShouldInstall = $False Write-Warning "Could not find module on GitHub: $_" } if($RemoteAvailable) { # Use the tag's link $URL = $GitHubTag.zipball_url if($ExistingVersions) { :versionsremote foreach($ExistingVersion in $ExistingVersions) { # Because a remote and a local version exist # Prevent a module from getting installed twice switch($ExistingVersion.CompareTo($GitHubVersion)) { {@(-1, 1) -contains $_} { Write-Verbose "For [$DependencyName], you have a different version [$ExistingVersion] compared to the version available on GitHub [$GitHubVersion]" break } 0 { Write-Verbose "For [$DependencyName], you already have the version [$ExistingVersion]" $ModuleExistingMatches = $true $ShouldInstall = $false break versionsremote } } } } } else { Write-Verbose "[$DependencyID] has no tags on GitHub or [$DependencyVersion] is a branchname" # Translate version "latest" to "master" if($DependencyVersion -eq "latest") { $DependencyVersion = "master" } # Link for a .zip archive of the repository's branch $URL = "https://api.github.com/repos/$DependencyID/zipball/$DependencyVersion" $ShouldInstall = $True } } # Install action needs to be wanted and logical if(($PSDependAction -contains 'Install') -and $ShouldInstall) { # Create a temporary directory and download the repository to it $OutPath = Join-Path ([System.IO.Path]::GetTempPath()) ([guid]::NewGuid().guid) New-Item -ItemType Directory -Path $OutPath -Force | Out-Null $OutFile = Join-Path $OutPath "$DependencyVersion.zip" Invoke-RestMethod -Uri $URL -OutFile $OutFile if(-not (Test-Path $OutFile)) { Write-Error "Could not download [$URL] to [$OutFile]. See error details and verbose output for more information" return } # Extract the zip file if($script:IsWindows) { $Zipfile = (New-Object -com shell.application).NameSpace($OutFile) $Destination = (New-Object -com shell.application).NameSpace($OutPath) $Destination.CopyHere($Zipfile.Items()) } else { # If not on Windows "Expand-Archive" should be available as PS version 6 is considered minimum. Expand-Archive $OutFile -DestinationPath $OutPath } # Remove the zip file Remove-Item $OutFile -Force -Confirm:$False $OutPath = (Get-ChildItem -Path $OutPath)[0].FullName $OutPath = (Rename-Item -Path $OutPath -NewName $DependencyName -PassThru).FullName if($ExtractPath) { # Filter only the contents wanted [string[]]$ToCopy = foreach($RelativePath in $ExtractPath) { $AbsolutePath = Join-Path $OutPath $RelativePath if(-not (Test-Path $AbsolutePath)) { Write-Warning "Expected ExtractPath [$RelativePath], did not find at [$AbsolutePath]" } else { $AbsolutePath } } } elseif($ExtractProject) { # Filter only the project contents $ProjectDetails = Get-ProjectDetail -Path $OutPath [string[]]$ToCopy = $ProjectDetails.Path } else { # Use the standard download path [string[]]$ToCopy = $OutPath } Write-Verbose "Contents that will be copied: $ToCopy" # Copy the contents to their target if(-not (Test-Path $TargetPath)) { New-Item $TargetPath -Force } $Destination = $null if ($TargetType -ne 'Exact') { $TargetPath = Join-Path $TargetPath $DependencyName } if($TargetType -eq 'Exact') { $Destination = $TargetPath } elseif($DependencyVersion -match "^\d+(?:\.\d+)+$" -and $PSVersionTable.PSVersion -ge '5.0' ) { # For versioned GitHub tags $Destination = Join-Path $TargetPath $DependencyVersion } elseif(($DependencyVersion -eq "latest") -and ($RemoteAvailable) -and $PSVersionTable.PSVersion -ge '5.0' ) { # For latest GitHub tags $Destination = Join-Path $TargetPath $GitHubVersion } elseif($PSVersionTable.PSVersion -ge '5.0' -and $TargetType -eq 'Parallel') { # For GitHub branches $Destination = Join-Path $TargetPath $DependencyVersion $Destination = Join-Path $Destination $DependencyName } else { $Destination = $TargetPath } if($Force -and (Test-Path -Path $Destination)) { Remove-Item -Path $Destination -Force -Recurse } Write-Verbose "Copying [$($ToCopy.Count)] items to destination [$Destination] with`nTarget [$TargetPath]`nName [$DependencyName]`nVersion [$DependencyVersion]`nGitHubVersion [$GitHubVersion]" foreach($Item in $ToCopy) { Copy-Item -Path $Item -Destination $Destination -Force -Recurse } # Delete the temporary folder Remove-Item (Get-Item $OutPath).parent.FullName -Force -Recurse $ModuleExisting = $true } # Conditional import if($ModuleExisting) { Import-PSDependModule -Name $TargetPath -Action $PSDependAction } elseif($PSDependAction -contains 'Import') { Write-Warning "[$DependencyName] at [$Destination] should be imported, but does not exist" } # Return true or false if Test action is wanted if($PSDependAction -contains 'Test') { return $ModuleExistingMatches } # Otherwise return null return $null |