cargo html

create self-contained HTML programs

Want to run basic console programs in the browser?
Too lazy to configure CORS properly to fetch/share WASM?
Hate firing up a webserver when you'd rather just double click an HTML file?
Easily confused by advanced concepts such as "I have multiple files"?

cargo html solves all of this, by generating .html files which embed and encode their javascript, WASM, and WASI implementations directly into said HTML. No CORS, no --allow-file-access-from-files flags, no sidecar files, 100% self contained.

Quickstart

```sh

install

cargo install cargo-html

create a project

cargo new hello-world cd hello-world

build a project

cargo html

view/run said project in the browser

start "" target/cargo-html/debug/hello-world.html ```

Examples

rust-mini-games

• as mentioned on HN: https://news.ycombinator.com/item?id=26089539
• upstream: https://github.com/Syn-Nine/rust-mini-games
• patches: https://github.com/MaulingMonkey/rust-mini-games

| Game | Issues | | ---- | ------ | | asylum | guess | knights | #6 File I/O not implemented (panic on exit) | lord | #7 Colors not supported (some terminal escape garbage) | rps | tictactoe

To reproduce the gh-pages of my fork of that repository from scratch: ```sh

init

cargo install cargo-html git clone --branch cargo-html-demo https://github.com/MaulingMonkey/rust-mini-games cd rust-mini-games

build

cargo html --release robocopy /S target/cargo-html/release . *.html

create branch

git checkout -b gh-pages git add -A . git commit -m "Updated examples" ```

Portability: Generated HTML

Requires: * wasm * async-functions * bigint * promises * textencoder * General awesomeness.

| Browser | Supported Version | | ----------------- | ----------------- | | Chrome | ✅ 67+ | Chrome for Android | ✅ 88+ | Firefox | ✅ 68+ | Firefox for Android | ✔️ 85+ | Opera | ✔️ 54+ | Opera Mobile | ✔️ 59+ | Opera Mini | ❌ None (missing WASM, Async Functions, TextEncoder, BigInt) | Safari | ✔️ 14+ | iOS Safari | ✔️ 14.4+ | Edge | ✅ 88+ | IE | ❌ None (missing WASM, Async Functions, TextEncoder, BigInt) | Android Browser | ✔️ 81+ | UC Browser for Android| ❌ None (missing WASM, BigInt) | Samsung Internet | ✅ 9.2+ | QQ Browser | ❌ None (missing BigInt) | Baidu Browser | ❌ None (missing WASM, Async Functions, BigInt) | KaiOS Browser | ❌ None (missing WASM, Async Functions, BigInt)

| ? | Legend | | ----- | --------- | | ✅ | Tested | ✔️ | Should work, but untested, so probably broken - file issues! | ❌ | Broken (Browsers could probably be fixed via polyfills and different codegen?)

Portability: Command Line

Requires: * rustup * cargo (typically installed via rustup) * Prebuilt wasm-bindgen binaries (will auto-download appropriate versions.) * Prebuilt wasm-opt binaries (will auto-download.) * wasm-pack for wasm_bindgen support (will be auto-installed from source.) * cargo-web for stdweb support (will be auto-installed from source.) * General awesomeness.

| Build OS | x86_64 | x86 | AArch64 | ARM | Other | | ------------- | --------- | --------- | --------- | --------- | ----- | | Windows | ✅ | ❌BO | ❌BO | ❌BO | ❌BO [...] | Linux | ✅ | ❌BO | ❌BO | ❌BO | ❌BO [...] | OS X | ✔️ | ❌BO | ❌BO | ❌BO | ❌BO [...]

| ? | Legend | | ----- | --------- | | ✅ | Tested | ✔️ | Should work | ❌B | Broken (wasm-bindgen binaries unavailable, can't bind JS for WASM) | ❌O | Broken (wasm-opt binaries unavailable, can't asyncify WASM)

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.