install

#!/usr/bin/env bash

# Unoffical Bash "strict mode"
# http://redsymbol.net/articles/unofficial-bash-strict-mode/
set -euo pipefail
IFS=$'\t\n' # Stricter IFS settings

asdf_bin_dir=$(dirname "$0")
# shellcheck source=../lib/utils.sh
source "$asdf_bin_dir/../lib/utils.sh"

install_erlang() {
    ensure_kerl_setup
    local build_name

    build_name="asdf_$ASDF_INSTALL_VERSION"

    export MAKEFLAGS="-j$ASDF_CONCURRENCY"

    "$KERL_PATH" delete installation "$build_name" || true
    "$KERL_PATH" delete build "$build_name" || true

    if [ "$ASDF_INSTALL_TYPE" = "ref" ]; then
        "$KERL_PATH" build git "${OTP_GITHUB_URL:-https://github.com/erlang/otp.git}" "$ASDF_INSTALL_VERSION" "$build_name"
    else
        "$KERL_PATH" build "$ASDF_INSTALL_VERSION" "$build_name"
    fi

    # We filter the output of the install command to hide irrelevant messages:
    # "You can activate/leave this installation running the following command"
    "$KERL_PATH" install 2>&1 | grep -v 'activate|leave'
    "$KERL_PATH" cleanup "$ASDF_INSTALL_VERSION"
    link_app_executables "$ASDF_INSTALL_PATH"
}

link_app_executables() {
    local install_path=$1

    # Link other executables to the bin directory so that asdf shims are created for them
    cd "$install_path/bin"

    # ln call may fail if multiple executables are found with the same name, so
    # we loop over all files matching these patterns, and symlink only if
    # file with same name does not already exist in "$install_path/bin"
    for file in ../lib/*/bin/* ../lib/*/priv/bin/*; do
        bin_name="$(basename "$file")"

        if [ ! -e "./$bin_name" ]; then
            ln -s "$file" .
        fi
    done
}

install_erlang