functions/templating/Invoke-PSMDTemplate.ps1
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function Invoke-PSMDTemplate { <# .SYNOPSIS Creates a project/file from a template. .DESCRIPTION This function takes a template and turns it into a finished file&folder structure. It does so by creating the files and folders stored within, replacing all parameters specified with values provided by the user. Missing parameters will be prompted for. .PARAMETER Template The template object to build from. Accepts objects returned by Get-PSMDTemplate. .PARAMETER TemplateName The name of the template to build from. Warning: This does wildcard interpretation, don't specify '*' unless you like answering parameter prompts. .PARAMETER Store The template store to retrieve tempaltes from. By default, all stores are queried. .PARAMETER Path Instead of a registered store, look in this path for templates. .PARAMETER OutPath The path in which to create the output. By default, it will create in the current directory. .PARAMETER Name The name of the produced output. Automatically inserted for any name parameter specified on creation. Also used for creating a root folder, when creating a project. .PARAMETER NoFolder Skip automatic folder creation for project templates. By default, this command will create a folder to place files&folders in when creating a project. .PARAMETER Parameters A Hashtable containing parameters for use in creating the template. .PARAMETER Raw By default, all parameters will be replaced during invocation. In Raw mode, this is skipped, reproducing mostly the original template input (dynamic scriptblocks will now be named scriptblocks)). .PARAMETER Force If the target path the template should be written to (filename or folder name within $OutPath), then overwrite it. By default, this function will fail if an overwrite is required. .PARAMETER Silent This places the function in unattended mode, causing it to error on anything requiring direct user input. .PARAMETER EnableException Replaces user friendly yellow warnings with bloody red exceptions of doom! Use this if you want the function to throw terminating errors you want to catch. .PARAMETER Confirm If this switch is enabled, you will be prompted for confirmation before executing any operations that change state. .PARAMETER WhatIf If this switch is enabled, no actions are performed but informational messages will be displayed that explain what would happen if the command were to run. .EXAMPLE PS C:\> Invoke-PSMDTemplate -TemplateName "module" Creates a project based on the module template in the current folder, asking for all details. .EXAMPLE PS C:\> Invoke-PSMDTemplate -TemplateName "module" -Name "MyModule" Creates a project based on the module template with the name "MyModule" #> [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSPossibleIncorrectUsageOfAssignmentOperator", "")] [CmdletBinding(SupportsShouldProcess = $true)] param ( [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'Template')] [PSModuleDevelopment.Template.TemplateInfo[]] $Template, [Parameter(Mandatory = $true, Position = 0, ParameterSetName = 'NameStore')] [Parameter(Mandatory = $true, Position = 0, ParameterSetName = 'NamePath')] [string] $TemplateName, [Parameter(ParameterSetName = 'NameStore')] [string] $Store = "*", [Parameter(Mandatory = $true, ParameterSetName = 'NamePath')] [string] $Path, [Parameter(Position = 2)] [string] $OutPath = (Get-PSFConfigValue -FullName 'PSModuleDevelopment.Template.OutPath' -Fallback "."), [Parameter(Position = 1)] [string] $Name, [switch] $NoFolder, [hashtable] $Parameters, [switch] $Raw, [switch] $Force, [switch] $Silent, [switch] $EnableException ) begin { Write-PSFMessage -Level InternalComment -Message "Bound parameters: $($PSBoundParameters.Keys -join ", ")" -Tag 'debug', 'start', 'param' #region Validate output path try { $resolvedPath = Resolve-Path $OutPath -ErrorAction Stop if (($resolvedPath | Measure-Object).Count -ne 1) { throw "Cannot resolve $OutPath to a single folder" } if ($resolvedPath.Provider -notlike "*FileSystem") { throw "Path $OutPath was not recognized as a filesystem path" } } catch { Stop-PSFFunction -Message "Could not resolve output path to a valid folder: $OutPath" -EnableException $EnableException -ErrorRecord $_ -Tag 'fail', 'path', 'validate' return } #endregion Validate output path $templates = @() switch ($PSCmdlet.ParameterSetName) { 'NameStore' { $templates = Get-PSMDTemplate -TemplateName $TemplateName -Store $Store } 'NamePath' { $templates = Get-PSMDTemplate -TemplateName $TemplateName -Path $Path } } #region Parameter Processing if (-not $Parameters) { $Parameters = @{ } } if ($Name) { $Parameters["Name"] = $Name } foreach ($config in (Get-PSFConfig -Module 'PSModuleDevelopment' -Name 'Template.ParameterDefault.*')) { $cfgName = $config.Name -replace '^.+\.([^\.]+)$', '$1' if (-not $Parameters.ContainsKey($cfgName)) { $Parameters[$cfgName] = $config.Value } } #endregion Parameter Processing #region Helper function function Invoke-Template { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions", "")] [CmdletBinding()] param ( [PSModuleDevelopment.Template.TemplateInfo] $Template, [string] $OutPath, [bool] $NoFolder, [hashtable] $Parameters, [bool] $Raw, [bool] $Silent ) Write-PSFMessage -Level Verbose -Message "Processing template $($item)" -Tag 'template', 'invoke' -FunctionName Invoke-PSMDTemplate $templateData = Import-Clixml -Path $Template.Path -ErrorAction Stop #region Process Parameters foreach ($parameter in $templateData.Parameters) { if (-not $parameter) { continue } if (-not $Parameters.ContainsKey($parameter)) { if ($Silent) { throw "Parameter not specified: $parameter" } try { $value = Read-Host -Prompt "Enter value for parameter '$parameter'" -ErrorAction Stop $Parameters[$parameter] = $value } catch { throw } } } #endregion Process Parameters #region Scripts $scriptParameters = @{ } if (-not $Raw) { foreach ($scriptParam in $templateData.Scripts.Values) { if (-not $scriptParam) { continue } try { $scriptParameters[$scriptParam.Name] = "$([scriptblock]::Create($scriptParam.StringScript).Invoke())" } catch { if ($Silent) { throw (New-Object System.Exception("Scriptblock $($scriptParam.Name) failed during execution: $_", $_.Exception)) } else { Write-PSFMessage -Level Warning -Message "Scriptblock $($scriptParam.Name) failed during execution. Please specify a custom value or use CTRL+C to terminate creation" -ErrorRecord $_ -FunctionName "Invoke-PSMDTemplate" -ModuleName 'PSModuleDevelopment' $scriptParameters[$scriptParam.Name] = Read-Host -Prompt "Value for script $($scriptParam.Name)" } } } } #endregion Scripts switch ($templateData.Type.ToString()) { #region File "File" { foreach ($child in $templateData.Children) { Write-TemplateItem -Item $child -Path $OutPath -ParameterFlat $Parameters -ParameterScript $scriptParameters -Raw $Raw } if ($Raw -and $templateData.Scripts.Values) { $templateData.Scripts.Values | Export-Clixml -Path (Join-Path $OutPath "_PSMD_ParameterScripts.xml") } } #endregion File #region Project "Project" { #region Resolve output folder if (-not $NoFolder) { if ($Parameters["Name"]) { $projectName = $Parameters["Name"] $projectFullName = Join-Path $OutPath $projectName if ((Test-Path $projectFullName) -and (-not $Force)) { throw "Project root folder already exists: $projectFullName" } $newFolder = New-Item -Path $OutPath -Name $Parameters["Name"] -ItemType Directory -ErrorAction Stop -Force } else { throw "Parameter Name is needed to create a project without setting the -NoFolder parameter!" } } else { $newFolder = Get-Item $OutPath } #endregion Resolve output folder foreach ($child in $templateData.Children) { Write-TemplateItem -Item $child -Path $newFolder.FullName -ParameterFlat $Parameters -ParameterScript $scriptParameters -Raw $Raw } #region Write Config File (Raw) if ($Raw) { $guid = [System.Guid]::NewGuid().ToString() $optionsTemplate = @" @{ TemplateName = "$($Template.Name)" Version = ([Version]"$($Template.Version)") Tags = $(($Template.Tags | ForEach-Object { "'$_'" }) -join ",") Author = "$($Template.Author)" Description = "$($Template.Description)" þþþPLACEHOLDER-$($guid)þþþ } "@ if ($params = $templateData.Scripts.Values) { $list = @() foreach ($param in $params) { $list += @" $($param.Name) = { $($param.StringScript) } "@ } $optionsTemplate = $optionsTemplate -replace "þþþPLACEHOLDER-$($guid)þþþ", ($list -join "`n`n") } else { $optionsTemplate = $optionsTemplate -replace "þþþPLACEHOLDER-$($guid)þþþ","" } $configFile = Join-Path $newFolder.FullName "PSMDTemplate.ps1" Set-Content -Path $configFile -Value $optionsTemplate -Encoding UTF8 } #endregion Write Config File (Raw) } #endregion Project } } function Write-TemplateItem { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseShouldProcessForStateChangingFunctions", "")] [CmdletBinding()] param ( [PSModuleDevelopment.Template.TemplateItemBase] $Item, [string] $Path, [hashtable] $ParameterFlat, [hashtable] $ParameterScript, [bool] $Raw ) Write-PSFMessage -Level Verbose -Message "Creating file: $($Item.Name) ($($Item.RelativePath))" -FunctionName Invoke-PSMDTemplate -ModuleName PSModuleDevelopment -Tag 'create','template' $identifier = $Item.Identifier $isFile = $Item.GetType().Name -eq 'TemplateItemFile' #region File if ($isFile) { $fileName = $Item.Name if (-not $Raw) { foreach ($param in $Item.FileSystemParameterFlat) { $fileName = $fileName -replace "$($identifier)$([regex]::Escape($param))$($identifier)",$ParameterFlat[$param] } foreach ($param in $Item.FileSystemParameterScript) { $fileName = $fileName -replace "$($identifier)!$([regex]::Escape($param))!$($identifier)", $ParameterScript[$param] } } $destPath = Join-Path $Path $fileName if ($Item.PlainText) { $text = $Item.Value if (-not $Raw) { foreach ($param in $Item.ContentParameterFlat) { $text = $text -replace "$($identifier)$([regex]::Escape($param))$($identifier)", $ParameterFlat[$param] } foreach ($param in $Item.ContentParameterScript) { $text = $text -replace "$($identifier)!$([regex]::Escape($param))!$($identifier)", $ParameterScript[$param] } } [System.IO.File]::WriteAllText($destPath, $text) } else { $bytes = [System.Convert]::FromBase64String($Item.Value) [System.IO.File]::WriteAllBytes($destPath, $bytes) } } #endregion File #region Folder else { $folderName = $Item.Name if (-not $Raw) { foreach ($param in $Item.FileSystemParameterFlat) { $folderName = $folderName -replace "$($identifier)$([regex]::Escape($param))$($identifier)", $ParameterFlat[$param] } foreach ($param in $Item.FileSystemParameterScript) { $folderName = $folderName -replace "$($identifier)!$([regex]::Escape($param))!$($identifier)", $ParameterScript[$param] } } $folder = New-Item -Path $Path -Name $folderName -ItemType Directory foreach ($child in $Item.Children) { Write-TemplateItem -Item $child -Path $folder.FullName -ParameterFlat $ParameterFlat -ParameterScript $ParameterScript -Raw $Raw } } #endregion Folder } #endregion Helper function } process { if (Test-PSFFunctionInterrupt) { return } foreach ($item in $Template) { if ($PSCmdlet.ShouldProcess($item, "Invoking template")) { try { Invoke-Template -Template $item -OutPath $resolvedPath.ProviderPath -NoFolder $NoFolder -Parameters $Parameters.Clone() -Raw $Raw -Silent $Silent } catch { Stop-PSFFunction -Message "Failed to invoke template $($item)" -EnableException $EnableException -ErrorRecord $_ -Target $item -Tag 'fail', 'template', 'invoke' -Continue } } } foreach ($item in $templates) { if ($PSCmdlet.ShouldProcess($item, "Invoking template")) { try { Invoke-Template -Template $item -OutPath $resolvedPath.ProviderPath -NoFolder $NoFolder -Parameters $Parameters.Clone() -Raw $Raw -Silent $Silent } catch { Stop-PSFFunction -Message "Failed to invoke template $($item)" -EnableException $EnableException -ErrorRecord $_ -Target $item -Tag 'fail', 'template', 'invoke' -Continue } } } } end { } } if (-not (Test-Path Alias:\imt)) { Set-Alias -Name imt -Value Invoke-PSMDTemplate } |