Created
November 28, 2018 21:10
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a bash script to make mix play well with protoc
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| #!/usr/bin/env bash | |
| # The protobuf source folder | |
| IN_DIR='proto_buf' | |
| # The folder to place the compilation folder into | |
| # The compilation folder always shares a name with the IN_DIR | |
| # so this cannot be blank | |
| OUT_DIR='lib' | |
| ! getopt --test > /dev/null | |
| if [[ ${PIPESTATUS[0]} -ne 4 ]]; then | |
| echo "error: this script requires enhanced getopt" | |
| exit 1 | |
| fi | |
| ! PARSED=$(getopt --options=f --longoptions=force --name "mix protoc" -- "$@") | |
| if [[ ${PIPESTATUS[0]} -ne 0 ]]; then | |
| # getopt was passed an illegal option | |
| exit 2 | |
| fi | |
| eval set -- "$PARSED" | |
| FORCE=n | |
| while true; do | |
| case "$1" in | |
| -f|--force) | |
| FORCE=y | |
| shift | |
| ;; | |
| --) | |
| shift | |
| break | |
| ;; | |
| *) | |
| echo "error: illegal option" | |
| exit 3 | |
| ;; | |
| esac | |
| done | |
| needs_compiling() { | |
| # the infile ($1) needs to be compiled if | |
| # a) the outfile doesn't exist, or | |
| # b) the outfile is older than the infile | |
| local outfile="$OUT_DIR/${1%.proto}.pb.ex" | |
| if [[ -e "$outfile" ]]; then | |
| if [[ "$outfile" -ot "$1" ]]; then | |
| # the outfile is older than the infile, so we need to recompile | |
| return 0 | |
| else | |
| # the outfile exists and is newer than the infile | |
| # so we don't need to do anything | |
| return 1 | |
| fi | |
| else | |
| # the outfile doesn't exist, so we need to compile | |
| return 0 | |
| fi | |
| } | |
| # Create the output directory if it doesn't exist | |
| mkdir -p "./$OUT_DIR/$IN_DIR/" | |
| # Populate an array with the names of files that need to be recompiled | |
| recompile_targets=() | |
| for pb in "$IN_DIR"/*.proto; do | |
| if [[ $FORCE = "y" ]]; then | |
| # we want to recompile everything, so just add it to the array | |
| recompile_targets+=("$pb") | |
| elif needs_compiling "$pb"; then | |
| recompile_targets+=("$pb") | |
| fi | |
| done | |
| if [[ ${#recompile_targets[@]} -gt 0 ]]; then | |
| # there's at least one item in need of compiling | |
| # so we tell the user and get to work | |
| echo "Compiling ${#recompile_targets[@]} files (.proto)" | |
| protoc -I "$IN_DIR" --elixir_out="./$OUT_DIR/$IN_DIR/" "${recompile_targets[@]}" | |
| fi |
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| defmodule Basilisk.MixProject do | |
| use Mix.Project | |
| @version "0.1.0" | |
| def project do | |
| [ | |
| app: :basilisk, | |
| version: @version, | |
| elixir: "~> 1.7", | |
| start_permanent: Mix.env() == :prod, | |
| aliases: aliases(), | |
| deps: deps(), | |
| ] | |
| end | |
| def application do | |
| [ | |
| extra_applications: [:logger], | |
| mod: {Basilisk.Application, []} | |
| ] | |
| end | |
| defp aliases do | |
| [ | |
| protoc: "cmd ./mix-protoc.sh", | |
| "protoc-setup": "escript.install hex protobuf", | |
| compile: ["protoc", "compile"] | |
| ] | |
| end | |
| defp deps do | |
| [ | |
| {:protobuf, "~> 0.5"} | |
| ] | |
| end | |
| end |
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| ┌─[arch@home] - [/mnt/code/basilisk] - [Wed Nov 28, 16:05] | |
| └─[$]> mix compile | |
| Compiling 153 files (.proto) | |
| Compiling 159 files (.ex) | |
| ┌─[arch@home] - [/mnt/code/basilisk] - [Wed Nov 28, 16:05] | |
| └─[$]> mix protoc --force | |
| Compiling 153 files (.proto) | |
| ┌─[arch@home] - [/mnt/code/basilisk] - [Wed Nov 28, 16:05] | |
| └─[$]> mix compile | |
| Compiling 153 files (.ex) | |
| ┌─[arch@home] - [/mnt/code/basilisk] - [Wed Nov 28, 16:05] | |
| └─[$]> |
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