More code style fixes (again)

functions.sh

@@ -67,8 +67,8 @@ function get_variants() {
   if [ ${#variantsfilter[@]} -gt 0 ]; then
     for variant1 in "${availablevariants[@]}"; do
       for variant2 in "${variantsfilter[@]}"; do
-        if [ "$variant1" = "$variant2" ]; then
-          variants+=("$variant1")
+        if [ "${variant1}" = "${variant2}" ]; then
+          variants+=("${variant1}")
         fi
       done
     done
@@ -100,11 +100,11 @@ function get_supported_arches() {
   shift
 
   # Get default supported arches
-  lines=$(grep "$variant" "$(dirname "${version}")"/architectures 2>/dev/null | cut -d' ' -f1)
+  lines=$(grep "${variant}" "$(dirname "${version}")"/architectures 2>/dev/null | cut -d' ' -f1)
 
   # Get version specific supported architectures if there is specialized information
   if [ -a "${version}"/architectures ]; then
-    lines=$(grep "$variant" "${version}"/architectures 2>/dev/null | cut -d' ' -f1)
+    lines=$(grep "${variant}" "${version}"/architectures 2>/dev/null | cut -d' ' -f1)
   fi
 
   while IFS='' read -r line; do
@@ -123,12 +123,12 @@ function get_config() {
   shift
 
   local name
-  name=$1
+  name=${1}
   shift
 
   local value
-  value=$(grep "^$name" "${dir}/config" | sed -E 's/'"$name"'[[:space:]]*//')
-  echo "$value"
+  value=$(grep "^${name}" "${dir}/config" | sed -E 's/'"${name}"'[[:space:]]*//')
+  echo "${value}"
 }
 
 # Get available versions for a given path
@@ -154,7 +154,7 @@ function get_versions() {
       local subdirs
       IFS=' ' read -ra subdirs <<<"$(get_versions "${dir#./}")"
       for subdir in "${subdirs[@]}"; do
-        versions+=("$subdir")
+        versions+=("${subdir}")
       done
     elif [ -a "${dir}/Dockerfile" ]; then
       versions+=("${dir#./}")

generate-stackbrew-library.sh

@@ -48,12 +48,12 @@ join() {
 }
 
 get_stub() {
-  local version="$1"
+  local version="${1}"
   shift
   IFS='/' read -ra versionparts <<<"${version}"
   local stub
   eval stub="$(join '_' "${versionparts[@]}" | awk -F. '{ print "$array_" $1 }')"
-  echo "$stub"
+  echo "${stub}"
 }
 
 for version in "${versions[@]}"; do
@@ -85,7 +85,7 @@ for version in "${versions[@]}"; do
     commit="$(fileCommit "${version}/${variant}")"
 
     slash='/'
-    variantAliases=("${versionAliases[@]/%/-${variant//$slash/-}}")
+    variantAliases=("${versionAliases[@]/%/-${variant//${slash}/-}}")
     variantAliases=("${variantAliases[@]//latest-/}")
     # Get supported architectures for a specific version and variant.
     # See details in function.sh

generate-stackbrew-pr.sh

@@ -3,14 +3,14 @@
 set -e
 . functions.sh
 
-if [ -z "$1" ]; then
-  COMMIT_ID="$TRAVIS_COMMIT"
-  COMMIT_MESSAGE="$TRAVIS_COMMIT_MESSAGE"
-  BRANCH_NAME="travis-$TRAVIS_BUILD_ID"
+if [ -z "${1}" ]; then
+  COMMIT_ID="${TRAVIS_COMMIT}"
+  COMMIT_MESSAGE="${TRAVIS_COMMIT_MESSAGE}"
+  BRANCH_NAME="travis-${TRAVIS_BUILD_ID}"
   GITHUB_USERNAME="nodejs-github-bot"
 else
-  COMMIT_ID="$1"
-  COMMIT_MESSAGE="$(git show -s --format=%B "$1")"
+  COMMIT_ID="${1}"
+  COMMIT_MESSAGE="$(git show -s --format=%B "${COMMIT_ID}")"
   BRANCH_NAME="travis-$(date +%s)"
   if [[ "$(git remote get-url origin)" =~ github.com/([^/]*)/docker-node.git ]]; then
     GITHUB_USERNAME="${BASH_REMATCH[1]}"
@@ -41,33 +41,33 @@ function updated() {
   )"
   images_changed=$(git diff --name-only "${COMMIT_ID}".."${COMMIT_ID}"~1 "${versions[@]}")
 
-  if [ -z "$images_changed" ]; then
+  if [ -z "${images_changed}" ]; then
     return 1
   fi
   return 0
 }
 
 function auth_header() {
-  echo "Authorization: token $GITHUB_API_TOKEN"
+  echo "Authorization: token ${GITHUB_API_TOKEN}"
 }
 
 function permission_check() {
-  if [ -z "$GITHUB_API_TOKEN" ]; then
+  if [ -z "${GITHUB_API_TOKEN}" ]; then
     fatal "Environment variable \$GITHUB_API_TOKEN is missing or empty"
   fi
 
   auth="$(curl -H "$(auth_header)" \
     -s \
     "https://api.github.com")"
 
-  if [ "$(echo "$auth" | jq -r .message)" = "Bad credentials" ]; then
+  if [ "$(echo "${auth}" | jq -r .message)" = "Bad credentials" ]; then
     fatal "Authentication Failed! Invalid \$GITHUB_API_TOKEN"
   fi
 
   auth="$(curl -H "$(auth_header)" \
     -s \
     "https://api.github.com/repos/${ORIGIN_SLUG}/collaborators/${GITHUB_USERNAME}/permission")"
-  if [ "$(echo "$auth" | jq -r .message)" != "null" ]; then
+  if [ "$(echo "${auth}" | jq -r .message)" != "null" ]; then
     fatal "\$GITHUB_API_TOKEN can't push to https://github.com/${ORIGIN_SLUG}.git"
   fi
 }
@@ -98,7 +98,7 @@ function pr_payload() {
 
 function comment_payload() {
   local pr_url
-  pr_url="$1"
+  pr_url="${1}"
   echo "{
     'body': 'Created PR to the ${REPO_NAME} repo (${pr_url})'
   }"
@@ -116,7 +116,7 @@ if updated; then
 
   stackbrew="$(./generate-stackbrew-library.sh)"
 
-  cd $gitpath
+  cd ${gitpath}
 
   echo "${stackbrew}" >"${IMAGES_FILE}"
   git checkout -b "${BRANCH_NAME}"
@@ -126,7 +126,7 @@ if updated; then
   info "Pushing..."
   git push "https://${GITHUB_API_TOKEN}:x-oauth-basic@github.com/${ORIGIN_SLUG}.git" -f "${BRANCH_NAME}" 2>/dev/null || fatal "Error pushing the updated stackbrew"
 
-  cd - && rm -rf $gitpath
+  cd - && rm -rf ${gitpath}
 
   info "Creating Pull request"
   pr_response_payload="$(curl -H "$(auth_header)" \
@@ -136,8 +136,8 @@ if updated; then
     "https://api.github.com/repos/${UPSTREAM_SLUG}/pulls")"
 
   url="$(echo "${pr_response_payload}" | jq -r .html_url)"
-  if [ "$url" != "null" ]; then
-    info "Pull request created at $url"
+  if [ "${url}" != "null" ]; then
+    info "Pull request created at ${url}"
 
     if [ ! -z "${PR_NUMBER}" ]; then
       comment_endpoint="https://api.github.com/repos/${DOCKER_SLUG}/issues/${PR_NUMBER}/comments"
@@ -149,8 +149,8 @@ if updated; then
     commit_response_payload="$(curl -H "$(auth_header)" \
       -s \
       -X POST \
-      -d "$(comment_payload "$url")" \
-      "$comment_endpoint")"
+      -d "$(comment_payload "${url}")" \
+      "${comment_endpoint}")"
 
     if [ "$(echo "${commit_response_payload}" | jq -r .message)" != "null" ]; then
       fatal "Error linking the pull request (${error_message})"

test-image.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-if [ "$(node -e "process.stdout.write(process.versions.node)")" != "$1" ]; then
+if [ "$(node -e "process.stdout.write(process.versions.node)")" != "${1}" ]; then
   echo "Test for node failed!"
   exit 1
 fi

update.sh

@@ -34,17 +34,17 @@ function in_versions_to_update() {
 
 function update_node_version() {
 
-  local baseuri=$1
+  local baseuri=${1}
   shift
-  local version=$1
+  local version=${1}
   shift
-  local template=$1
+  local template=${1}
   shift
-  local dockerfile=$1
+  local dockerfile=${1}
   shift
   local variant=""
   if [ $# -eq 1 ]; then
-    variant=$1
+    variant=${1}
     shift
   fi
 
@@ -58,7 +58,7 @@ function update_node_version() {
 
     sed -Ei -e 's/^FROM (.*)/FROM '"${fromprefix}"'\1/' "${dockerfile}"
     sed -Ei -e 's/^(ENV NODE_VERSION |FROM .*node:).*/\1'"${version}.${fullVersion:-0}"'/' "${dockerfile}"
-    sed -Ei -e 's/^(ENV YARN_VERSION ).*/\1'"${yarnVersion}"'/' "$dockerfile"
+    sed -Ei -e 's/^(ENV YARN_VERSION ).*/\1'"${yarnVersion}"'/' "${dockerfile}"
 
     # shellcheck disable=SC1004
     new_line=' \\\
@@ -69,7 +69,7 @@ function update_node_version() {
       while read -r line; do
         pattern="\"\\$\\{$(echo "${key_type}" | tr '[:lower:]' '[:upper:]')_KEYS\\[@\\]\\}\""
         sed -Ei -e "s/([ \\t]*)(${pattern})/\\1${line}${new_line}\\1\\2/" "${dockerfile}"
-      done <"keys/$key_type.keys"
+      done <"keys/${key_type}.keys"
       sed -Ei -e "/${pattern}/d" "${dockerfile}"
     done
 
@@ -81,11 +81,11 @@ function update_node_version() {
 }
 
 function add_stage() {
-  local baseuri=$1
+  local baseuri=${1}
   shift
-  local version=$1
+  local version=${1}
   shift
-  local variant=$1
+  local variant=${1}
   shift
 
   echo '
@@ -102,21 +102,21 @@ for version in "${versions[@]}"; do
   # Skip "docs" and other non-docker directories
   [ -f "${version}/Dockerfile" ] || continue
 
-  parentpath=$(dirname "$version")
-  versionnum=$(basename "$version")
-  baseuri=$(get_config "$parentpath" "baseuri")
-  update=$(in_versions_to_update "$version")
+  parentpath=$(dirname "${version}")
+  versionnum=$(basename "${version}")
+  baseuri=$(get_config "${parentpath}" "baseuri")
+  update=$(in_versions_to_update "${version}")
 
   add_stage "${baseuri}" "${version}" "default"
 
   if [ "${update}" -eq 0 ]; then
-    info "Updating version $version..."
+    info "Updating version ${version}..."
     update_node_version "${baseuri}" "${versionnum}" "${parentpath}/Dockerfile.template" "${version}/Dockerfile" &
   fi
 
   # Get supported variants according the target architecture
   # See details in function.sh
-  IFS=' ' read -ra variants <<<"$(get_variants "$parentpath")"
+  IFS=' ' read -ra variants <<<"$(get_variants "${parentpath}")"
 
   for variant in "${variants[@]}"; do
     # Skip non-docker directories