protocw

#!/usr/bin/env bash

## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
## This is an auto-generated wrapper for Protocol Buffer's protoc utility           ##
##                                                                                  ##
## Don't edit this file directly                                                    ##
##                                                                                  ##
## This file and its companion protocw.properties are expected to be committed      ##
## into source control repository, while .protocw folder is expected to be ignored  ##
##                                                                                  ##
## For help, run `./protocw --help` or refer to the project Github                  ##
## To update, run `./protocw --self-update`                                         ##
##                                                                                  ##
## Protoc Wrapper | https://github.com/freenowtech/protoc-wrapper                   ##
## Lucas Laurindo dos Santos | https://github.com/lucasls                           ##
## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##

INSTALL_BASE_URL="https://raw.githubusercontent.com/freenowtech/protoc-wrapper/master"

basedir=$(dirname "$0")

lower() {
    echo $1 | tr '[:upper:]' '[:lower:]'
}

print() {
    printf "$1" >&2
}

println() {
    echo "$1" >&2
}

version_lte() {
    [  "$1" = "`echo -e "$1\n$2" | sort -V | head -n1`" ]
}

version_lt() {
    [ "$1" = "$2" ] && return 1 || version_lte $1 $2
}

configure() {
    println ""
    print "What's the target protoc version? "
    read version

    echo "protoc_version=$version" > $basedir/protocw.properties
    println "Version set to $version, to change it run protocw --configure"

    if [ -f pom.xml ]
    then
        print "* Maven detected, replacing existing calls to protoc with protocw if necessary..."
        sed -E -i "" "s /usr/local/bin/protoc(-[0-9]+\.[0-9]+\.[0-9]+)? ./protocw g" pom.xml
        println " done."
    fi

    if [ -d .git ]
    then
        print "* Git detected, adding .protocw to .gitignore if necessary..."

        if ! grep -q ".protocw" .gitignore
        then
            printf "\n.protocw" >> .gitignore
        fi
        println " done."
    fi
    
    println ""
    exit
}

help() {
    println "** Protoc Wrapper Help: **"
    println ""
    println "  --configure    Sets up what version of protoc to use"
    println "  --self-update  Updates Protoc Wrapper to the newest version"

    if [ -z $protoc_version ]
    then
        exit
    fi

    println ""
    println "** Protoc Help **"
    println ""
}

version() {
    if ! version_lt $protoc_version "3.22.0"
    then
        VERSION_DISCLAIMER="Since version 3.22.0, the major version is no longer part of the returned version number"
        if [ "$keep_major_version_number" = "true" ]
        then
            println "INFO: $VERSION_DISCLAIMER, returning backwards compatible version number"
            println 
            echo "libprotoc $protoc_version"
            exit 0
        else
            println "WARN: $VERSION_DISCLAIMER, set \`keep_major_version_number=true\` in \`protocw.properties\` to keep the major version number"
            println 
        fi
    fi
}

self_update() {
    println "Starting Protoc Wrapper self update..."
    println ""

    eval "$(curl -fsSL $INSTALL_BASE_URL/install.sh)"
    exit
}

# Start

if [ "$1" = "--configure" ]
then
    configure
fi

if [ "$1" = "--self-update" ]
then
    self_update
fi

touch $basedir/protocw.properties
source $basedir/protocw.properties

if [ "$1" = "--help" ]
then
    help
fi

if [ -z $protoc_version ]
then
    println "protoc_version not set in protocw.properties"
    exit -1
fi

mkdir -p "$basedir/.protocw"
filename="$basedir/.protocw/protoc-$protoc_version"

if [ ! -f $filename ]
then
    if [ $(lower $(uname))  = "darwin" ]
    then
        osname="osx"
    else
        osname="linux"
    fi
    if [ $(uname -m) = "arm64" ]
    then
        if [ $osname = "osx" ] && version_lt $protoc_version "3.17.3"
        then
            println "WARN: arm64 on osx detected, downloading x86_64 binaries; use protoc_version >= 3.17.3 for native binaries on osx"
            osarch="x86_64"
        elif [ $osname = "linux" ] && version_lt $protoc_version "3.10.0"
        then
            println "ERROR: only protoc_version >= 3.10.0 is supported for arm64 on linux"
            exit -1
        else
            osarch="aarch_64"
        fi
    else
        osarch=$(uname -m)
    fi

    print "Downloading Protoc version: $protoc_version-$osname-$osarch... "
    curl "https://repo1.maven.org/maven2/com/google/protobuf/protoc/$protoc_version/protoc-$protoc_version-$osname-$osarch.exe" -o $filename --fail --silent

    last_error=$?

    if [ $last_error -ne 0 ]; then
        println "Error"
        println "Could not download protoc, please check if version $protoc_version is a valid version in protoc Maven Repository"
        exit $last_error
    fi

    println "Done"

    chmod +x $filename
fi

if [ "$1" = "--version" ]
then
    version
fi

"$filename" "$@"