dashboard/build_web.sh

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#!/usr/bin/env bash
set -eu
script_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" ; pwd -P )
cd "$script_path"
OPEN=false
FAST=false
while test $# -gt 0; do
case "$1" in
-h|--help)
echo "build_web.sh [--fast] [--open]"
echo " --fast: skip optimization step"
echo " --open: open the result in a browser"
exit 0
;;
--fast)
shift
FAST=true
;;
--open)
shift
OPEN=true
;;
*)
break
;;
esac
done
# ./setup_web.sh # <- call this first!
FOLDER_NAME=${PWD##*/}
CRATE_NAME=$FOLDER_NAME # assume crate name is the same as the folder name
CRATE_NAME_SNAKE_CASE="${CRATE_NAME//-/_}" # for those who name crates with-kebab-case
# This is required to enable the web_sys clipboard API which egui_web uses
# https://rustwasm.github.io/wasm-bindgen/api/web_sys/struct.Clipboard.html
# https://rustwasm.github.io/docs/wasm-bindgen/web-sys/unstable-apis.html
export RUSTFLAGS=--cfg=web_sys_unstable_apis
# Clear output from old stuff:
rm -f "docs/${CRATE_NAME_SNAKE_CASE}_bg.wasm"
echo "Building rust…"
BUILD=release
cargo build -p "${CRATE_NAME}" --release --lib --target wasm32-unknown-unknown
# Get the output directory (in the workspace it is in another location)
TARGET=$(cargo metadata --format-version=1 | jq --raw-output .target_directory)
echo "Generating JS bindings for wasm…"
TARGET_NAME="${CRATE_NAME_SNAKE_CASE}.wasm"
WASM_PATH="${TARGET}/wasm32-unknown-unknown/${BUILD}/${TARGET_NAME}"
wasm-bindgen "${WASM_PATH}" --out-dir docs --no-modules --no-typescript
if [[ "${FAST}" == false ]]; then
echo "Optimizing wasm…"
# to get wasm-opt: apt/brew/dnf install binaryen
wasm-opt "docs/${CRATE_NAME}_bg.wasm" -O2 --fast-math -o "docs/${CRATE_NAME}_bg.wasm" # add -g to get debug symbols
fi
echo "Finished: docs/${CRATE_NAME_SNAKE_CASE}.wasm"
if [[ "${OPEN}" == true ]]; then
if [[ "$OSTYPE" == "linux-gnu"* ]]; then
# Linux, ex: Fedora
xdg-open http://localhost:8080/index.html
elif [[ "$OSTYPE" == "msys" ]]; then
# Windows
start http://localhost:8080/index.html
else
# Darwin/MacOS, or something else
open http://localhost:8080/index.html
fi
fi