chore: simplify error code checks (#5131)

Instead of loading the error code and checking it, shorten checks by
running the command directly.

lib/functions/buildFileList.sh

@@ -23,30 +23,20 @@ function GenerateFileDiff() {
 }
 
 function RunFileDiffCommand() {
+  local CMD
   CMD="${1}"
   debug "Generating Diff with:[$CMD]"
 
   #################################################
   # Get the Array of files changed in the commits #
   #################################################
-  CMD_OUTPUT=$(eval "set -eo pipefail; $CMD; set +eo pipefail")
+  if ! CMD_OUTPUT=$(eval "set -eo pipefail; $CMD; set +eo pipefail"); then
-  ERROR_CODE=$?
-  debug "Diff command return code: ${ERROR_CODE}"
-
-  ##############################
-  # Check the shell for errors #
-  ##############################
-  if [ ${ERROR_CODE} -ne 0 ]; then
     error "Failed to get Diff with:[$CMD]"
     IssueHintForFullGitHistory
-    fatal "[Diff command output: ${CMD_OUTPUT}]"
+    fatal "Diff command output: ${CMD_OUTPUT}"
   fi
 
-  ###################################################
-  # Map command output to an array to proper handle #
-  ###################################################
   mapfile -t RAW_FILE_ARRAY < <(echo -n "$CMD_OUTPUT")
-  debug "RAW_FILE_ARRAY contents: ${RAW_FILE_ARRAY[*]}"
 }
 
 function BuildFileList() {
@@ -72,7 +62,7 @@ function BuildFileList() {
     if [ "${USE_FIND_ALGORITHM}" == 'true' ]; then
       debug "----------------------------------------------"
       debug "Populating the file list with all the files in the ${WORKSPACE_PATH} workspace using FIND algorithm"
-      mapfile -t RAW_FILE_ARRAY < <(find "${WORKSPACE_PATH}" \
+      if ! mapfile -t RAW_FILE_ARRAY < <(find "${WORKSPACE_PATH}" \
         -not \( -path '*/\.git' -prune \) \
         -not \( -path '*/\.pytest_cache' -prune \) \
         -not \( -path '*/\.rbenv' -prune \) \
@@ -92,20 +82,21 @@ function BuildFileList() {
         -not -name "*.woff2" \
         -not -name "*.zip" \
         -type f \
-        2>&1 | sort)
+        2>&1 | sort); then
+        fatal "Failed to get a list of changed files. USE_FIND_ALGORITHM: ${USE_FIND_ALGORITHM}"
+      fi
+
     else
       debug "----------------------------------------------"
       DIFF_GIT_VALIDATE_ALL_CODEBASE="git -C \"${WORKSPACE_PATH}\" ls-tree -r --name-only HEAD | xargs -I % sh -c \"echo ${WORKSPACE_PATH}/%\" 2>&1"
       debug "Populating the file list with: ${DIFF_GIT_VALIDATE_ALL_CODEBASE}"
-      mapfile -t RAW_FILE_ARRAY < <(eval "set -eo pipefail; ${DIFF_GIT_VALIDATE_ALL_CODEBASE}; set +eo pipefail")
+      if ! mapfile -t RAW_FILE_ARRAY < <(eval "set -eo pipefail; ${DIFF_GIT_VALIDATE_ALL_CODEBASE}; set +eo pipefail"); then
-      debug "RAW_FILE_ARRAY contents: ${RAW_FILE_ARRAY[*]}"
+        fatal "Failed to get a list of changed files. USE_FIND_ALGORITHM: ${USE_FIND_ALGORITHM}"
+      fi
     fi
   fi
 
-  ERROR_CODE=$?
+  debug "RAW_FILE_ARRAY contents: ${RAW_FILE_ARRAY[*]}"
-  if [ ${ERROR_CODE} -ne 0 ]; then
-    fatal "Failed to gain a list of all files changed! Error code: ${ERROR_CODE}"
-  fi
 
   if [ ${#RAW_FILE_ARRAY[@]} -eq 0 ]; then
     warn "No files were found in the GITHUB_WORKSPACE:[${GITHUB_WORKSPACE}] to lint!"

lib/functions/githubEvent.sh

@@ -4,10 +4,9 @@ function GetGithubPushEventCommitCount() {
   local GITHUB_EVENT_FILE_PATH
   GITHUB_EVENT_FILE_PATH="${1}"
   local GITHUB_PUSH_COMMIT_COUNT
-  GITHUB_PUSH_COMMIT_COUNT=$(jq -r '.commits | length' <"${GITHUB_EVENT_FILE_PATH}")
+
-  ERROR_CODE=$?
+  if ! GITHUB_PUSH_COMMIT_COUNT=$(jq -r '.commits | length' <"${GITHUB_EVENT_FILE_PATH}"); then
-  if [ ${ERROR_CODE} -ne 0 ]; then
+    fatal "Failed to initialize GITHUB_PUSH_COMMIT_COUNT for a push event. Output: ${GITHUB_PUSH_COMMIT_COUNT}"
-    fatal "Failed to initialize GITHUB_PUSH_COMMIT_COUNT for a push event. Error code: ${ERROR_CODE}. Output: ${GITHUB_PUSH_COMMIT_COUNT}"
   fi
 
   if IsUnsignedInteger "${GITHUB_PUSH_COMMIT_COUNT}" && [ -n "${GITHUB_PUSH_COMMIT_COUNT}" ]; then

lib/functions/linterRules.sh

@@ -194,22 +194,8 @@ GetStandardRules() {
   #########################################
   # Only env vars that are marked as true
   GET_ENV_ARRAY=()
-  if [[ ${LINTER} == "javascript" ]]; then
+  if [[ ${LINTER} == "javascript" ]] && ! mapfile -t GET_ENV_ARRAY < <(yq .env "${JAVASCRIPT_STANDARD_LINTER_RULES}" | grep true); then
-    mapfile -t GET_ENV_ARRAY < <(yq .env "${JAVASCRIPT_STANDARD_LINTER_RULES}" | grep true)
+    fatal "Failed to gain list of ENV vars to load: [${GET_ENV_ARRAY[*]}]"
-  fi
-
-  #######################
-  # Load the error code #
-  #######################
-  ERROR_CODE=$?
-
-  ##############################
-  # Check the shell for errors #
-  ##############################
-  if [ ${ERROR_CODE} -ne 0 ]; then
-    # ERROR
-    error "Failed to gain list of ENV vars to load!"
-    fatal "[${GET_ENV_ARRAY[*]}]"
   fi
 
   ##########################
@@ -218,14 +204,8 @@ GetStandardRules() {
   # Set IFS back to Orig
   IFS="${ORIG_IFS}"
 
-  ######################
-  # Set the env string #
-  ######################
   ENV_STRING=''
 
-  #############################
-  # Pull out the envs to load #
-  #############################
   for ENV in "${GET_ENV_ARRAY[@]}"; do
     #############################
     # remove spaces from return #

lib/functions/linterVersions.sh

@@ -16,7 +16,7 @@ GetLinterVersions() {
   fi
 
   if ! cat "${VERSION_FILE}"; then
-    fatal "Failed to view version file: ${VERSION_FILE}."
+    fatal "Failed to view version file: ${VERSION_FILE}"
   fi
 }
 ################################################################################

lib/linter.sh

@@ -490,10 +490,7 @@ GetGitHubVars() {
     if [[ "${USE_FIND_ALGORITHM}" == "false" ]]; then
       ConfigureGitSafeDirectories
       debug "Initializing GITHUB_SHA considering ${GITHUB_WORKSPACE}"
-      GITHUB_SHA=$(git -C "${GITHUB_WORKSPACE}" rev-parse HEAD)
+      if ! GITHUB_SHA=$(git -C "${GITHUB_WORKSPACE}" rev-parse HEAD); then
-      ERROR_CODE=$?
-      debug "GITHUB_SHA initalization return code: ${ERROR_CODE}"
-      if [ ${ERROR_CODE} -ne 0 ]; then
         fatal "Failed to initialize GITHUB_SHA. Output: ${GITHUB_SHA}"
       fi
       debug "GITHUB_SHA: ${GITHUB_SHA}"
@@ -532,11 +529,8 @@ GetGitHubVars() {
     # https://docs.github.com/en/actions/reference/events-that-trigger-workflows#pull_request
     if [ "$GITHUB_EVENT_NAME" == "pull_request" ]; then
       debug "This is a GitHub pull request. Updating the current GITHUB_SHA (${GITHUB_SHA}) to the pull request HEAD SHA"
-      GITHUB_SHA=$(jq -r .pull_request.head.sha <"$GITHUB_EVENT_PATH")
-      ERROR_CODE=$?
-      debug "GITHUB_SHA update error code: ${ERROR_CODE}"
 
-      if [ ${ERROR_CODE} -ne 0 ]; then
+      if ! GITHUB_SHA=$(jq -r .pull_request.head.sha <"$GITHUB_EVENT_PATH"); then
         fatal "Failed to update GITHUB_SHA for pull request event: ${GITHUB_SHA}"
       fi
       debug "Updated GITHUB_SHA: ${GITHUB_SHA}"
@@ -552,10 +546,7 @@ GetGitHubVars() {
       # Ref: https://docs.github.com/en/actions/learn-github-actions/contexts#github-context
       debug "Get the hash of the commit to start the diff from from Git because the GitHub push event payload may not contain references to base_ref or previous commit."
       # shellcheck disable=SC2086  # We checked that GITHUB_PUSH_COMMIT_COUNT is an integer
-      GITHUB_BEFORE_SHA=$(git -C "${GITHUB_WORKSPACE}" rev-parse HEAD~${GITHUB_PUSH_COMMIT_COUNT})
+      if ! GITHUB_BEFORE_SHA=$(git -C "${GITHUB_WORKSPACE}" rev-parse HEAD~${GITHUB_PUSH_COMMIT_COUNT}); then
-      ERROR_CODE=$?
-      debug "GITHUB_BEFORE_SHA initialization error code: ${ERROR_CODE}"
-      if [ ${ERROR_CODE} -ne 0 ]; then
         fatal "Failed to initialize GITHUB_BEFORE_SHA for a push event. Output: ${GITHUB_BEFORE_SHA}"
       fi
 
@@ -660,7 +651,7 @@ CallStatusAPI() {
     ##############################################
     # Call the status API to create status check #
     ##############################################
-    SEND_STATUS_CMD=$(
+    if ! SEND_STATUS_CMD=$(
       curl -f -s --show-error -X POST \
         --url "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/statuses/${GITHUB_SHA}" \
         -H 'accept: application/vnd.github.v3+json' \
@@ -670,19 +661,7 @@ CallStatusAPI() {
         \"target_url\": \"https://${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}\",
         \"description\": \"${MESSAGE}\", \"context\": \"--> Linted: ${LANGUAGE}\"
       }" 2>&1
-    )
+    ); then
-
-    #######################
-    # Load the error code #
-    #######################
-    ERROR_CODE=$?
-
-    debug "Send status comd output: [$SEND_STATUS_CMD]"
-
-    ##############################
-    # Check the shell for errors #
-    ##############################
-    if [ "${ERROR_CODE}" -ne 0 ]; then
       info "Failed to call GitHub Status API: ${SEND_STATUS_CMD}"
     fi
   fi