ospath Terraform Provider

This provider allows you to join paths in an OS-independent way. For example:

resource "ospath" "my_folder" {
  path = ["src", "my_folder"]
}

outputs "my_folder_path" {
  value = ospath_join.my_folder.result
}

The output my_folder_path will return src/my_folder on Linux and macOS, but will return src\my_folder on Windows host systems.

For "relative paths", use the path named value (see References to Named Values) as part of the list:

resource "ospath" "myfile" {
  path = [path.module, "src", "myModuleFile.txt"]
}

If you made the mistake of referencing a non-existent file with ospath using a file function (e.g. file or filemd5), use a ternary operator and fileexists with your file function:

resource "ospath" "myfile" {
  path = [path.module, "src", "myModuleFile.txt"]
}

resource "aws_s3_bucket_object" "my_s3_obj" {
  # truncated...
  etag = fileexists(ospath_join.app_s3_cfn.result) ? filemd5(ospath_join.app_s3_cfn.result) : ""
}

This will allow terraform to evaluate the path lazily (see #10878 and fileexists).

Under the hood, the path list is passed to Go's path package's Join. Hence (from the documentation's examples), here are some behaviors of join resource (assuming it is a Unix system):

path = ["a", "b", "c"]
# => a/b/c
path = ["a/b", "c"]
# => a/b/c
path = ["a", ""]
# => a
# .s are ignored, use the path variable instead (e.g. path.cwd, path.module, path.root)
path = [".", "a"]
# => a

Installation

This project is currently in alpha, minimal testing has been done. To use this plugin, add joeltio/ospath as one of your required providers in yuor terraform file:

terraform {
  required_providers {
    ospath = {
      source = "joeltio/ospath"
      version = "0.0.3-alpha"
    }
  }
}