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| -rw-r--r-- | .github/workflows/test.yml | 22 | ||||
| -rw-r--r-- | .gitignore | 8 | ||||
| -rw-r--r-- | Earthfile | 39 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | README.md | 72 | ||||
| -rw-r--r-- | flake.nix | 35 | ||||
| -rw-r--r-- | gleam.toml | 21 | ||||
| -rw-r--r-- | manifest.toml | 25 | ||||
| -rw-r--r-- | src/gemini.gleam | 49 | ||||
| -rw-r--r-- | src/gemtext/blockquote.gleam | 20 | ||||
| -rw-r--r-- | src/gemtext/gemtext.gleam | 14 | ||||
| -rw-r--r-- | src/gemtext/heading.gleam | 17 | ||||
| -rw-r--r-- | src/gemtext/list.gleam | 16 | ||||
| -rw-r--r-- | src/gemtext/parse.gleam | 49 | ||||
| -rw-r--r-- | src/gemtext/preformatted_block.gleam | 34 | ||||
| -rw-r--r-- | src/gopher.gleam | 62 | ||||
| -rw-r--r-- | src/momoka.gleam | 34 | ||||
| -rw-r--r-- | src/tcp.gleam | 16 | ||||
| -rw-r--r-- | test/momoka_test.gleam | 66 |
19 files changed, 1273 insertions, 0 deletions
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml new file mode 100644 index 0000000..f32824b --- /dev/null +++ b/.github/workflows/test.yml @@ -0,0 +1,22 @@ +name: 💜 Test + +on: + push: + branches: + - main + pull_request: + +jobs: + test: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: erlef/setup-beam@v1 + with: + otp-version: "26.0.2" + gleam-version: "1.2.1" + rebar3-version: "3" + # elixir-version: "1.15.4" + - run: gleam deps download + - run: gleam test + - run: gleam format --check src test diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..5c9e096 --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +# Gleam +*.beam +*.ez +/build +erl_crash.dump + +# Visual Studio Code +.vscode diff --git a/Earthfile b/Earthfile new file mode 100644 index 0000000..fdf39f0 --- /dev/null +++ b/Earthfile @@ -0,0 +1,39 @@ +VERSION 0.8 + +all: + BUILD +docker + +docker: + ARG tag=latest + + FROM ghcr.io/gleam-lang/gleam:v1.2.1-erlang-alpine + + COPY +build/erlang-shipment/ /momoka/erlang-shipment/ + + WORKDIR /momoka/ + + ENTRYPOINT ["./erlang-shipment/entrypoint.sh"] + + CMD ["run"] + + SAVE IMAGE --push fuwn/momoka:${tag} + +deps: + FROM ghcr.io/gleam-lang/gleam:v1.2.0-erlang-alpine + + RUN apk add --no-cache build-base + +build: + FROM +deps + + WORKDIR /momoka/ + + COPY src/ /momoka/src/ + COPY gleam.toml /momoka/ + COPY manifest.toml /momoka/ + + RUN gleam build \ + && cd build/ \ + && gleam export erlang-shipment + + SAVE ARTIFACT /momoka/build/erlang-shipment/ @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + <one line to give the program's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>.
\ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..2018929 --- /dev/null +++ b/README.md @@ -0,0 +1,72 @@ +# 🏕️ Momoka + +> A Gemini-to-Gopher Proxy + +Momoka is a Gopher proxy that sits in between Gopher clients and Gemini servers. +It translates any Gemini requests containing Gemtext into Gopher-compatible +responses. + +Momoka is written in under 300 (280) lines of code and written in the functional +[Gleam](https://gleam.run). It's designed to be small and simple. + +## Usage + +If you'd like to test out a production deployment of Momoka, you can visit +[`gopher://fuwn.me:70/1`](gopher://fuwn.me:70/1). + +### Local + +```bash +$ git clone [email protected]:Fuwn/momoka.git +$ cd momoka +$ gleam run +$ # or +$ nix run +``` + +### Docker + +```shell +docker run -p '70:70' --rm fuwn/momoka:latest +``` + +### Proxy + +By default, top-level requests, like `gopher://fuwn.me/1`, are proxied to +their mapped Gemini equivalents. Here are a few examples. + +- [`gopher://fuwn.me`](gopher://fuwn.me) => + [`gemini://fuwn.me`](gemini://fuwn.me) +- [`gopher://fuwn.me/1`](gopher://fuwn.me/1) => + [`gemini://fuwn.me`](gemini://fuwn.me) +- [`gopher://fuwn.me/1/index2`](gopher://fuwn.me/1/index2) => + [`gemini://fuwn.me/index2`](gemini://fuwn.me/index2) + +Prepending `/proxy/` to the path will allow you to proxy any Gemini server. +Here are a few examples. + +- [`gopher://fuwn.me/1/proxy/geminiprotocol.net`](gopher://fuwn.me/1/proxy/geminiprotocol.net) + => [`gemini://geminiprotocol.net`](gemini://geminiprotocol.net) +- [`gopher://fuwn.me/1/proxy/fuwn.me/index2`](gopher://fuwn.me/1/proxy/fuwn.me/index2) + => [`gemini://fuwn.me/index2`](`gemini://fuwn.me/index2`) + +### Configuration + +Momoka contains three environment variables that can be set to your liking. + +- `ROOT` – The root Gemini capsule to proxy for top-level requests (defaults to + `fuwn.me`) +- `PORT` – The port to listen on for Gopher clients (defaults to `70`) +- `GEMINI_PROXY` – A raw-Gemtext producing Gemini-to-HTTP proxy. (defaults to + the [fuwn.me](https://fuwn.me) + [September](https://github.com/gemrest/september) instance) + +## GemRest + +I'm also the author of [GemRest](https://github.com/gemrest), the largest +organisation of Gemini-oriented software, tooling, and libraries. If you're +interested in Gemini, I'd recommend checking it out. + +## Licence + +This project is licensed with the [GNU General Public License v3.0](./LICENSE). diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..1deb4b7 --- /dev/null +++ b/flake.nix @@ -0,0 +1,35 @@ +{ + description = "Gemini-to-Gopher Proxy"; + inputs = { + nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; + flake-utils.url = "github:numtide/flake-utils"; + nix-gleam.url = "github:arnarg/nix-gleam"; + gitignore = { + url = "github:hercules-ci/gitignore.nix"; + inputs.nixpkgs.follows = "nixpkgs"; + }; + }; + outputs = { self, nixpkgs, flake-utils, nix-gleam, gitignore, ... }: + flake-utils.lib.eachDefaultSystem (system: + let + pkgs = import nixpkgs { + inherit system; + overlays = [ + nix-gleam.overlays.default + ]; + }; + inherit (gitignore.lib) gitignoreSource; + in + { + packages.default = pkgs.buildGleamApplication { + src = gitignoreSource ./.; + rebar3Package = pkgs.rebar3WithPlugins { + plugins = with pkgs.beamPackages; [ pc ]; + }; + }; + devShell = pkgs.mkShell { + buildInputs = [ pkgs.gleam pkgs.rebar3 ]; + }; + } + ); +} diff --git a/gleam.toml b/gleam.toml new file mode 100644 index 0000000..10008d4 --- /dev/null +++ b/gleam.toml @@ -0,0 +1,21 @@ +# For a full reference of all the available options, you can have a look at +# https://gleam.run/writing-gleam/gleam-toml/. + +name = "momoka" +version = "1.0.0" +gleam = ">= 0.2.1" +description = "Gemini-to-Gopher Proxy" +licenses = ["GPL-3.0-only"] +repository = { type = "github", user = "Fuwn", repo = "momoka" } + +[dependencies] +gleam_stdlib = ">= 0.34.0 and < 2.0.0" +glisten = ">= 3.0.0 and < 4.0.0" +gleam_erlang = ">= 0.25.0 and < 1.0.0" +gleam_otp = ">= 0.10.0 and < 1.0.0" +gleam_httpc = ">= 2.2.0 and < 3.0.0" +gleam_http = ">= 3.6.0 and < 4.0.0" +envoy = ">= 1.0.1 and < 2.0.0" + +[dev-dependencies] +gleeunit = ">= 1.0.0 and < 2.0.0" diff --git a/manifest.toml b/manifest.toml new file mode 100644 index 0000000..af95f60 --- /dev/null +++ b/manifest.toml @@ -0,0 +1,25 @@ +# This file was generated by Gleam +# You typically do not need to edit this file + +packages = [ + { name = "envoy", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "envoy", source = "hex", outer_checksum = "CFAACCCFC47654F7E8B75E614746ED924C65BD08B1DE21101548AC314A8B6A41" }, + { name = "gleam_erlang", version = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" }, + { name = "gleam_http", version = "3.6.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_http", source = "hex", outer_checksum = "8C07DF9DF8CC7F054C650839A51C30A7D3C26482AC241C899C1CEA86B22DBE51" }, + { name = "gleam_httpc", version = "2.2.0", build_tools = ["gleam"], requirements = ["gleam_http", "gleam_stdlib"], otp_app = "gleam_httpc", source = "hex", outer_checksum = "CF76C71002DEECF6DC5D9CA83D962728FAE166B57926BE442D827004D3C7DF1B" }, + { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" }, + { name = "gleam_stdlib", version = "0.38.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "663CF11861179AF415A625307447775C09404E752FF99A24E2057C835319F1BE" }, + { name = "gleeunit", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "72CDC3D3F719478F26C4E2C5FED3E657AC81EC14A47D2D2DEBB8693CA3220C3B" }, + { name = "glisten", version = "3.0.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_otp", "gleam_stdlib", "logging", "telemetry"], otp_app = "glisten", source = "hex", outer_checksum = "AEB79A7244CB553A52974EDB87E652607E82749E4EC84B47B1F1BC926F1673C8" }, + { name = "logging", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "logging", source = "hex", outer_checksum = "A996064F04EF6E67F0668FD0ACFB309830B05D0EE3A0C11BBBD2D4464334F792" }, + { name = "telemetry", version = "1.2.1", build_tools = ["rebar3"], requirements = [], otp_app = "telemetry", source = "hex", outer_checksum = "DAD9CE9D8EFFC621708F99EAC538EF1CBE05D6A874DD741DE2E689C47FEAFED5" }, +] + +[requirements] +envoy = { version = ">= 1.0.1 and < 2.0.0"} +gleam_erlang = { version = ">= 0.25.0 and < 1.0.0" } +gleam_http = { version = ">= 3.6.0 and < 4.0.0" } +gleam_httpc = { version = ">= 2.2.0 and < 3.0.0" } +gleam_otp = { version = ">= 0.10.0 and < 1.0.0" } +gleam_stdlib = { version = ">= 0.34.0 and < 2.0.0" } +gleeunit = { version = ">= 1.0.0 and < 2.0.0" } +glisten = { version = ">= 3.0.0 and < 4.0.0" } diff --git a/src/gemini.gleam b/src/gemini.gleam new file mode 100644 index 0000000..9cd0884 --- /dev/null +++ b/src/gemini.gleam @@ -0,0 +1,49 @@ +import envoy +import gemtext/parse +import gleam/bit_array +import gleam/bytes_builder +import gleam/http/request +import gleam/httpc +import gleam/string +import gopher + +pub fn get_gemtext_from_capsule(message) { + let root_capsule = case envoy.get("ROOT") { + Ok(capsule) -> capsule + _ -> "fuwn.me" + } + // Gleam isn't mature enough to even have an SSL/TLS libraries that I could + // find, and Erlang FFI is unclear, so Momoka uses the + // [September](https://github.com/gemrest/september) proxy deployed at + // <https://fuwn.me> to fetch the raw Gemini content. + // + // I'm sure as the language grows, this will be replaced with a more direct + // approach. + let gemini_proxy = case envoy.get("GEMINI_PROXY") { + Ok(proxy) -> proxy + _ -> "https://fuwn.me/raw/" + } + let assert Ok(request) = case bit_array.to_string(message) { + Ok(path) -> { + case path { + "/\r\n" | "\r\n" -> request.to(gemini_proxy <> root_capsule) + "/proxy/" <> route -> + request.to(gemini_proxy <> string.replace(route, "\r\n", "")) + "/" <> path -> + request.to( + gemini_proxy + <> root_capsule + <> "/" + <> string.replace(path, "\r\n", ""), + ) + _ -> request.to(root_capsule <> string.replace(path, "\r\n", "")) + } + } + _ -> request.to(root_capsule) + } + let assert Ok(response) = httpc.send(request) + + bytes_builder.from_string( + gopher.gemtext_to_gopher(parse.parse_gemtext_raw(response.body)) <> "\r\n", + ) +} diff --git a/src/gemtext/blockquote.gleam b/src/gemtext/blockquote.gleam new file mode 100644 index 0000000..94aa937 --- /dev/null +++ b/src/gemtext/blockquote.gleam @@ -0,0 +1,20 @@ +import gemtext/gemtext.{type Gemtext} +import gleam/list +import gleam/string + +pub fn combine_adjacent_blockquote_lines(lines: List(Gemtext)) -> List(Gemtext) { + case lines { + [gemtext.BlockquoteLine(a), gemtext.BlockquoteLine(b), ..rest] -> + combine_adjacent_blockquote_lines([ + gemtext.Blockquote(string.join([a, b], "\n")), + ..rest + ]) + [gemtext.Blockquote(a), gemtext.BlockquoteLine(b), ..rest] -> + combine_adjacent_blockquote_lines([ + gemtext.Blockquote(string.join([a, b], "\n")), + ..rest + ]) + [g, ..rest] -> list.append([g], combine_adjacent_blockquote_lines(rest)) + [] -> [] + } +} diff --git a/src/gemtext/gemtext.gleam b/src/gemtext/gemtext.gleam new file mode 100644 index 0000000..a1dd3a5 --- /dev/null +++ b/src/gemtext/gemtext.gleam @@ -0,0 +1,14 @@ +import gleam/option.{type Option} + +pub type Gemtext { + Text(String) + Link(to: String, Option(String)) + Heading(String, depth: Int) + ListLine(String) + List(List(List(String))) + BlockquoteLine(String) + Blockquote(String) + Preformatted(description: Option(String), body: String) + PreformattedLine(String) + Whitespace +} diff --git a/src/gemtext/heading.gleam b/src/gemtext/heading.gleam new file mode 100644 index 0000000..153153e --- /dev/null +++ b/src/gemtext/heading.gleam @@ -0,0 +1,17 @@ +import gleam/string + +pub fn count_leading_hashes(line: String) -> Int { + do_count_leading_hashes(string.to_graphemes(line), 0) +} + +fn do_count_leading_hashes(characters: List(String), accumulator: Int) -> Int { + case characters { + [c, ..rest] -> { + case c { + "#" -> do_count_leading_hashes(rest, accumulator + 1) + _ -> accumulator + } + } + _ -> accumulator + } +} diff --git a/src/gemtext/list.gleam b/src/gemtext/list.gleam new file mode 100644 index 0000000..23a73c7 --- /dev/null +++ b/src/gemtext/list.gleam @@ -0,0 +1,16 @@ +import gemtext/gemtext.{type Gemtext} +import gleam/list + +pub fn group_adjacent_list_items(lines: List(Gemtext)) -> List(Gemtext) { + case lines { + [gemtext.ListLine(a), gemtext.ListLine(b), ..rest] -> + group_adjacent_list_items([gemtext.List([[a], [b]]), ..rest]) + [gemtext.List(lists), gemtext.ListLine(item), ..rest] -> + group_adjacent_list_items([ + gemtext.List(list.append(lists, [[item]])), + ..rest + ]) + [g, ..rest] -> list.append([g], group_adjacent_list_items(rest)) + [] -> [] + } +} diff --git a/src/gemtext/parse.gleam b/src/gemtext/parse.gleam new file mode 100644 index 0000000..f26cf3d --- /dev/null +++ b/src/gemtext/parse.gleam @@ -0,0 +1,49 @@ +import gemtext/blockquote +import gemtext/gemtext.{type Gemtext} +import gemtext/heading +import gemtext/list as gemtext_list +import gemtext/preformatted_block +import gleam/list +import gleam/option.{None, Some} +import gleam/string + +pub fn parse_gemtext_line(line) -> Gemtext { + let trimmed_line = string.trim(line) + + case string.split(trimmed_line, " ") { + ["=>", to] -> gemtext.Link(to, None) + ["=>", to, ..title] -> gemtext.Link(to, Some(string.join(title, " "))) + [">", ..rest] -> + gemtext.BlockquoteLine(string.trim_left(string.join(rest, " "))) + ["*", ..rest] -> gemtext.ListLine(string.trim_left(string.join(rest, " "))) + [""] -> gemtext.Whitespace + _ -> { + case string.to_graphemes(trimmed_line) { + ["#", ..rest] -> + gemtext.Heading( + string.trim_left(string.replace(string.join(rest, ""), "#", "")), + heading.count_leading_hashes(line), + ) + ["`", "`", "`", ..rest] -> + gemtext.PreformattedLine(string.trim_left( + "```\n" <> string.join(rest, ""), + )) + _ -> gemtext.Text(line) + } + } + } +} + +pub fn parse_gemtext(text: String) -> List(Gemtext) { + string.split(text, "\n") + |> preformatted_block.group_adjacent_preformatted_block_lines + |> list.map(parse_gemtext_line) + |> gemtext_list.group_adjacent_list_items + |> blockquote.combine_adjacent_blockquote_lines +} + +pub fn parse_gemtext_raw(text: String) -> List(Gemtext) { + string.split(text, "\n") + |> preformatted_block.group_adjacent_preformatted_block_lines + |> list.map(parse_gemtext_line) +} diff --git a/src/gemtext/preformatted_block.gleam b/src/gemtext/preformatted_block.gleam new file mode 100644 index 0000000..5e94fef --- /dev/null +++ b/src/gemtext/preformatted_block.gleam @@ -0,0 +1,34 @@ +import gleam/list +import gleam/string + +pub fn group_adjacent_preformatted_block_lines( + lines: List(String), +) -> List(String) { + case lines { + ["```", desc, ..rest] -> { + let #(body, rest) = do_group_adjacent_preformatted_block_lines(rest, []) + list.append( + ["```" <> desc <> "\n" <> body <> "\n```"], + group_adjacent_preformatted_block_lines(rest), + ) + } + [line, ..rest] -> + list.append([line], group_adjacent_preformatted_block_lines(rest)) + [] -> [] + } +} + +fn do_group_adjacent_preformatted_block_lines( + lines: List(String), + accumulator: List(String), +) { + case lines { + ["```", ..rest] -> #(string.join(accumulator, "\n"), rest) + [line, ..rest] -> + do_group_adjacent_preformatted_block_lines( + rest, + list.append(accumulator, [line]), + ) + [] -> #(string.join(accumulator, "\n"), []) + } +} diff --git a/src/gopher.gleam b/src/gopher.gleam new file mode 100644 index 0000000..044ee40 --- /dev/null +++ b/src/gopher.gleam @@ -0,0 +1,62 @@ +import gemtext/gemtext.{type Gemtext} +import gleam/list +import gleam/option.{None, Some} +import gleam/string + +pub fn gemtext_to_gopher(gemtext: List(Gemtext)) -> String { + gemtext + |> list.map(fn(line) { + case line { + gemtext.PreformattedLine(content) -> + content + |> string.split("\n") + |> list.map(fn(line) { + case line { + "```" -> "" + _ -> "i`` " <> line + } + }) + |> string.join("\n") + _ -> gemtext_line_to_gopher_line(line) + } + }) + |> string.join("\n") +} + +fn extract_domain_from_url(url: String) -> String { + case string.split(url, "://") { + [_, rest] -> { + case string.split(rest, "/") { + [domain, _] -> domain + _ -> rest + } + } + _ -> "null.host" + } +} + +fn gopher_link_line(to, description) { + "h" + <> description + <> "\tURL:" + <> to + <> "\t" + <> extract_domain_from_url(to) + <> "\t70" +} + +pub fn gemtext_line_to_gopher_line(line: Gemtext) -> String { + case line { + gemtext.Text(text) -> "i" <> text + gemtext.Link(to, description) -> + case description { + Some(description) -> gopher_link_line(to, description) + None -> gopher_link_line(to, to) + } + gemtext.Heading(text, depth) -> + "i" <> list.repeat("#", depth) |> string.join("") <> " " <> text + gemtext.ListLine(text) -> "i* " <> text + gemtext.BlockquoteLine(text) -> "i> " <> text + _ -> "" + } +} diff --git a/src/momoka.gleam b/src/momoka.gleam new file mode 100644 index 0000000..6b49c87 --- /dev/null +++ b/src/momoka.gleam @@ -0,0 +1,34 @@ +import envoy +import gemini +import gleam/erlang/process +import gleam/int +import gleam/option.{None} +import gleam/otp/actor +import glisten.{Packet} +import tcp + +pub fn main() { + let assert Ok(_) = + glisten.handler( + fn(_connection) { #(Nil, None) }, + fn(message, state, connection) { + let assert Packet(message) = message + let assert Ok(_) = + glisten.send(connection, gemini.get_gemtext_from_capsule(message)) + let assert Ok(_) = tcp.close_connection(connection) + + actor.continue(state) + }, + ) + |> glisten.serve(case envoy.get("PORT") { + Ok(port) -> { + case int.base_parse(port, 10) { + Ok(port) -> port + _ -> 70 + } + } + _ -> 70 + }) + + process.sleep_forever() +} diff --git a/src/tcp.gleam b/src/tcp.gleam new file mode 100644 index 0000000..30e443e --- /dev/null +++ b/src/tcp.gleam @@ -0,0 +1,16 @@ +import gleam/erlang/atom.{type Atom} +import glisten +import glisten/socket.{type Socket, type SocketReason} + +@external(erlang, "glisten_tcp_ffi", "shutdown") +fn do_shutdown(socket: Socket, write: Atom) -> Result(Nil, SocketReason) + +pub fn shutdown(socket: Socket) -> Result(Nil, SocketReason) { + let assert Ok(write) = atom.from_string("write") + + do_shutdown(socket, write) +} + +pub fn close_connection(connection: glisten.Connection(a)) { + shutdown(connection.socket) +} diff --git a/test/momoka_test.gleam b/test/momoka_test.gleam new file mode 100644 index 0000000..ee712ea --- /dev/null +++ b/test/momoka_test.gleam @@ -0,0 +1,66 @@ +import gemtext/gemtext +import gemtext/parse +import gleam/option.{None, Some} +import gleeunit +import gleeunit/should + +pub fn main() { + gleeunit.main() +} + +pub fn parse_gemtext_link_with_title_test() { + parse.parse_gemtext_line( + "=> https://example.com/ This is a link with a title.", + ) + |> should.equal(gemtext.Link( + "https://example.com/", + Some("This is a link with a title."), + )) +} + +pub fn parse_gemtext_link_without_title_test() { + parse.parse_gemtext_line("=> https://example.com/") + |> should.equal(gemtext.Link("https://example.com/", None)) +} + +pub fn parse_gemtext_blockquote_line_test() { + parse.parse_gemtext_line("> This is a quote.") + |> should.equal(gemtext.BlockquoteLine("This is a quote.")) +} + +pub fn parse_gemtext_list_line_test() { + parse.parse_gemtext_line("* This is a list item.") + |> should.equal(gemtext.ListLine("This is a list item.")) +} + +pub fn parse_gemtext_whitespace_line_test() { + parse.parse_gemtext_line("") + |> should.equal(gemtext.Whitespace) +} + +pub fn parse_gemtext_heading_level_one_test() { + parse.parse_gemtext_line("# This is a level one heading.") + |> should.equal(gemtext.Heading("This is a level one heading.", 1)) +} + +pub fn parse_gemtext_heading_level_two_test() { + parse.parse_gemtext_line("## This is a level two heading.") + |> should.equal(gemtext.Heading("This is a level two heading.", 2)) +} + +pub fn parse_gemtext_heading_level_three_test() { + parse.parse_gemtext_line("### This is a level three heading.") + |> should.equal(gemtext.Heading("This is a level three heading.", 3)) +} + +pub fn parse_gemtext_preformatted_line_test() { + parse.parse_gemtext_line("```") + |> should.equal(gemtext.PreformattedLine("```\n")) +} + +pub fn parse_gemtext_preformatted_flattened_block_test() { + parse.parse_gemtext_line("```\nThis is a preformatted block.\n```") + |> should.equal(gemtext.PreformattedLine( + "```\n\nThis is a preformatted block.\n```", + )) +} |