feat: add commands for managing an internal node-build installation

.gitignore

@@ -72,3 +72,5 @@ $RECYCLE.BIN/
 *.lnk
 
 # End of https://www.toptal.com/developers/gitignore/api/linux,macos,windows
+
+.node-build

lib/commands/command-nodebuild.bash

@@ -0,0 +1,32 @@
+#! /usr/bin/env bash
+
+set -eu -o pipefail
+
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/../utils.sh"
+
+: "${ASDF_NODEJS_NODEBUILD_HOME=$ASDF_NODEJS_PLUGIN_DIR/.node-build}"
+
+# node-build environment variables being overriden by asdf-nodejs
+export NODE_BUILD_CACHE_PATH="${NODE_BUILD_CACHE_PATH:-$ASDF_NODEJS_CACHE_DIR/node-build}"
+
+if [ "$NODEJS_ORG_MIRROR" ]; then
+  export NODE_BUILD_MIRROR_URL="$NODEJS_ORG_MIRROR"
+fi
+
+if [ "${ASDF_CONCURRENCY-}" ]; then
+  export MAKE_OPTS="${MAKE_OPTS:-} -j \"$ASDF_CONCURRENCY\""
+fi
+
+nodebuild="${ASDF_NODEJS_NODEBUILD:-$ASDF_NODEJS_NODEBUILD_HOME/bin/node-build}" 
+
+if ! [ -x "$nodebuild" ]; then
+  printf "Binary for node-build not found\n"
+
+  if ! [ "$ASDF_NODEJS_NODEBUILD" ]; then
+    printf "Are you sure it was installed? Try running \`asdf %s update-nodebuild\` to do a local update or install\n" "$(plugin_name)"
+  fi
+
+  exit 1
+fi
+
+exec "$nodebuild" "$@"

lib/commands/command-update-nodebuild.bash

@@ -0,0 +1,28 @@
+#! /usr/bin/env bash
+
+set -eu -o pipefail
+
+source "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/../utils.sh"
+
+: "${ASDF_NODEJS_NODEBUILD_HOME=$ASDF_NODEJS_PLUGIN_DIR/.node-build}"
+: "${ASDF_NODEJS_NODEBUILD_REPOSITORY=https://github.com/nodenv/node-build.git}"
+
+ensure_updated_project() {
+  local pull_exit_code=
+
+  if ! [ -d "$ASDF_NODEJS_NODEBUILD_HOME" ]; then
+    printf "Cloning node-build...\n"
+    git clone "$ASDF_NODEJS_NODEBUILD_REPOSITORY" "$ASDF_NODEJS_NODEBUILD_HOME"
+  else
+    printf "Trying to update node-build...\n"
+    git -C "$ASDF_NODEJS_NODEBUILD_HOME" pull origin master || pull_exit_code=$?
+
+    if [ "$pull_exit_code" ]; then
+      printf "ERROR: Updating the node-build repository exited with code %s\n" "$pull_exit_code"
+      printf "Please check if the git repository at %s doesn't have any changes or anything that might not allow a git pull\n" "$ASDF_NODEJS_NODEBUILD_REPOSITORY" 
+      exit 1
+    fi
+  fi
+}
+
+ensure_updated_project

lib/utils.sh

@@ -10,15 +10,17 @@ fi
 
 ASDF_NODEJS_KEYRING=asdf-nodejs.gpg
 
-ASDF_NODEJS_PLUGIN_NAME="$(basename "$(dirname "$(dirname "$0")")")"
+export ASDF_NODEJS_PLUGIN_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+
 # TODO: Replace with an asdf variable once asdf starts providing the plugin name
 # as a variable
+export ASDF_NODEJS_PLUGIN_NAME=$(basename "$ASDF_NODEJS_PLUGIN_DIR")
 plugin_name() {
   printf "%s\n" "$ASDF_NODEJS_PLUGIN_NAME"
 }
 
-ASDF_DIR="${ASDF_DIR:-$HOME/.asdf}"
+export ASDF_NODEJS_CACHE_DIR="${ASDF_DATA_DIR:-${ASDF_DIR:-$HOME/.asdf}}/tmp/$ASDF_NODEJS_PLUGIN_NAME/cache"
-export ASDF_NODEJS_PLUGIN_NAME ASDF_DIR
+export ASDF_DIR="${ASDF_DIR:-$HOME/.asdf}"
 
 die() {
   >&2 echo "$@"
@@ -61,7 +63,7 @@ filter_version_candidates() {
   done
 }
 
-versions_cache_dir="${ASDF_DATA_DIR:-${ASDF_HOME:-$HOME/.asdf}}/tmp/$(plugin_name)/cache"
+versions_cache_dir="$ASDF_NODEJS_CACHE_DIR/versions-tab"
 mkdir -p "$versions_cache_dir"
 
 etag_file="$versions_cache_dir/etag"