Functions/Import-TemplateConfiguration.ps1
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<#
.SYNOPSIS Loads the specified configuration file. Assumes a flat JSON object structure. .EXAMPLE Sample JSON config file { "ProjectName": "ProjectScaffold", "Description": "Description", "Tags": "Tags", "GitHome": "Git home", "Summary": "Summary", "Author": "Author", "GitName": "GitName" } .\Load-ComponentConfig.ps1 -Verbose #> function Import-TemplateConfiguration { [CmdletBinding()] param( #Path to the config JSON file to load [Parameter(Mandatory,ValueFromPipeline)] [string[]]$Path , #If specified, then do not load values into process environment variables [switch]$DoNotLoadAsEnvironmentVariables, #If specified, then do not load values into local variables [switch]$DoNotLoadAsLocalVariables, [switch]$DoNotExpandConfigTemplates, #Do not delete the expanded versions of the config files [switch]$DoNotDeleteExpandedConfigFiles ) foreach($configPath in $Path) { Write-Verbose "Load config from: $configPath" $config = Get-Content $configPath -Raw | ConvertFrom-Json Write-Verbose "Config values:`n $($config|out-string)" $config.psobject.Properties | ForEach-Object { $name = $_.Name $value = $config."$name" -replace '"','`"' if($value -is [PSCustomObject]) { return; } if(-not $DoNotLoadAsEnvironmentVariables) { [environment]::SetEnvironmentVariable($name, $value) Write-Verbose "Set environment variable `$env:$name = '$( [environment]::GetEnvironmentVariable($name))'" } if(-not $DoNotLoadAsLocalVariables) { Invoke-Expression "`$global:$name = `"$($value)`"" Write-Verbose "Set global variable `$global:$name = '$(Get-Variable -Name $name -ValueOnly)'" } } } #Here were apply the loaded template properties to the configuration/property files themselves to allow for using template expansion in JSON config files if(-not $DoNotExpandConfigTemplates) { $expandedConfigPaths = @() foreach($configPath in $Path) { $expandedConfigPath = Join-path (split-path $configPath -Parent) -Child (([io.path]::GetFileNameWithoutExtension($configPath)) + '.pstemplate_expanded' + ([io.path]::GetExtension($configPath))) Expand-Template -Path $configPath -Destination $expandedConfigPath $expandedConfigPaths += $expandedConfigPath } Import-TemplateConfiguration -Path $expandedConfigPaths ` -DoNotLoadAsEnvironmentVariables:$DoNotLoadAsEnvironmentVariables ` -DoNotLoadAsLocalVariables:$DoNotLoadAsLocalVariables ` -DoNotExpandConfigTemplates ` -DoNotDeleteExpandedConfigFiles:$DoNotDeleteExpandedConfigFiles if(-not $DoNotDeleteExpandedConfigFiles) { Remove-Item $expandedConfigPaths -Force } } } |