kinda sorta print headers

.github/workflows/test.yml

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+name: test
+
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: erlef/setup-beam@v1
+        with:
+          otp-version: "26.0.2"
+          gleam-version: "1.0.0"
+          rebar3-version: "3"
+          # elixir-version: "1.15.4"
+      - run: gleam deps download
+      - run: gleam test
+      - run: gleam format --check src test

.gitignore

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+*.beam
+*.ez
+/build
+erl_crash.dump

README.md

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+# mbox
+
+[![Package Version](https://img.shields.io/hexpm/v/mbox)](https://hex.pm/packages/mbox)
+[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/mbox/)
+
+```sh
+gleam add mbox
+```
+```gleam
+import mbox
+
+pub fn main() {
+  // TODO: An example of the project in use
+}
+```
+
+Further documentation can be found at <https://hexdocs.pm/mbox>.
+
+## Development
+
+```sh
+gleam run   # Run the project
+gleam test  # Run the tests
+gleam shell # Run an Erlang shell
+```

gleam.toml

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+name = "mbox"
+version = "1.0.0"
+
+# Fill out these fields if you intend to generate HTML documentation or publish
+# your project to the Hex package manager.
+#
+# description = ""
+# licences = ["Apache-2.0"]
+# repository = { type = "github", user = "username", repo = "project" }
+# links = [{ title = "Website", href = "https://gleam.run" }]
+#
+# For a full reference of all the available options, you can have a look at
+# https://gleam.run/writing-gleam/gleam-toml/. 
+
+[dependencies]
+gleam_stdlib = "~> 0.36"
+simplifile = "~> 1.5"
+
+[dev-dependencies]
+gleeunit = "~> 1.0"

manifest.toml

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+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
+  { name = "gleeunit", version = "1.0.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "D364C87AFEB26BDB4FB8A5ABDE67D635DC9FA52D6AB68416044C35B096C6882D" },
+  { name = "simplifile", version = "1.5.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "C44DB387524F90DC42142699C78C850003289D32C7C99C7D32873792A299CDF7" },
+]
+
+[requirements]
+gleam_stdlib = { version = "~> 0.36" }
+gleeunit = { version = "~> 1.0" }
+simplifile = { version = "~> 1.5"}

src/mbox.gleam

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+import gleam/io
+import gleam/dict.{type Dict, new}
+import simplifile
+import gleam/result
+import gleam/string
+import gleam/list
+import gleam/pair
+import gleam/regex
+import gleam/function
+
+pub fn main() {
+  io.println("Hello from mbox!")
+
+  get_headers("/home/payas/Downloads/mboxtest")
+}
+
+pub fn get_headers(filepath: String) -> Dict(String, String) {
+    let assert Ok(header_pattern) = regex.compile("^[^:]+: ", regex.Options(True, True))
+
+    filepath
+    |> simplifile.read
+    |> result.unwrap(or: "foo")
+    |> string.split_once("\n\n")
+    |> result.unwrap(or: #("", ""))
+    |> pair.first // get only headers
+    |> function.tap(io.println)
+    |> regex.split(header_pattern, _)
+    |> list.map(io.println)
+
+    new()
+}

test/mbox_test.gleam

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+import gleeunit
+import gleeunit/should
+
+pub fn main() {
+  gleeunit.main()
+}
+
+// gleeunit test functions end in `_test`
+pub fn hello_world_test() {
+  1
+  |> should.equal(1)
+}