Regex matching Terraform blocks in .NET

github.repos.tf

resource "github_repository" "terraform_example" {
  name = "terraform-example"
  visibility = "private"
  description = "Test Repo"
  homepage_url = ""
  has_issues = true
  has_wiki = true
  has_projects = false
  has_downloads = true
}

resource "github_branch_protection" "terraform_example_master" {
  repository_id = github_repository.terraform_example.node_id
  pattern = "master"
  enforce_admins = false

  required_status_checks {
    strict = true
    contexts = ["Jenkins - Test Repo"]
  }
  required_pull_request_reviews {
  }
  push_restrictions = [
    github_team.DevTeam.node_id
  ]
 depends_on = [github_team_repository.DevTeam_terraform_example]
}

# Many more repo configurations below

Instructions.txt

This a crude but reasonably effective way of extracting blocks from Terraform/HCL in something like PowerShell.
I'm sure there are edge cases that are not covered here but this is handy when you want to parse Terraform configurations en masse.

In my particular case I needed to replace all `github_branch_protection` resources with `github_branch_protection_v3` resources due to the current GraphQL implementation of the GitHub Terraform provider causing lengthy Terraform runs. :(

script.ps1

# Import the terraform config as a raw string
$TerraformConfig = Get-Content './github.repos.tf' -Raw

# The below matches only on the 'github_branch_protection' resource above
$Regex = '(resource "github_branch_protection" "terraform_example_master" {(?>[^{}]+|{(?<curly>)|}(?<-curly>))*(?(curly)(?!))})'

# Replace the matched regex with nothing
$TerraformConfig -replace $Regex,''

# Export the content back out to the original file
Set-Content './github.repos.tf' -Value $TerraformConfig -Force