Bash template script - change line end character

scripts/bash-template.sh

@@ -1,111 +1,118 @@
-#!/usr/bin/env bash
-
-# https://betterdev.blog/minimal-safe-bash-script-template/
-# https://medium.com/better-programming/my-minimal-safe-bash-script-template-300759114040
-
-set -E -o errexit -o nounset -o pipefail
-trap cleanup SIGINT SIGTERM ERR EXIT
-
-readonly SCRIPT_NAME=$(basename "${BASH_SOURCE[0]}")
-readonly SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
-
-function usage() {
-    cat <<EOT
-Usage: ${script_name} [-h | --help] [-a <ARG>] [--abc <ARG>] [-f | --flag]
-DESCRIPTION
-    Your description here.
-OPTIONS:
--h, --help
-        Print this help and exit.
--f, --flag
-        Description for flag option.
--a
-        Description for the -a option.
---abc
-        Description for the --abc option.
-EOT
-}
-
-function cleanup() {
-  trap - SIGINT SIGTERM ERR EXIT
-  # script cleanup here
-}
-
-function msg() {
-  echo >&2 -e "${1-}"
-}
-
-function die() {
-  local -r msg="$1"
-  local -r code="${2:-90}"
-  echo "${msg}" >&2
-  exit "${code}"
-}
-
-function parse_params() {
-    local -r args=("${@}")
-
-    while true; do    
-    
-    case "$1" in
-    --abc)
-            abc_option_flag=1
-            shift
-            readonly abc_arg="$1"
-            shift
-            ;;
-
-    -a)
-            a_option_flag=1
-            shift
-            readonly a_arg="$1"
-            shift
-            ;;
-
-    --help|-h)
-            usage
-            exit 0
-            shift
-            ;;
-    
-    --flag|-f)
-            flag_option_flag=1
-            shift
-            ;;
-    
-    --)
-            shift
-            break
-            ;;
-    
-    *)
-            break
-            ;;
-    esac
-    done
-}
-
-# MAIN
-
-a_option_flag=0
-abc_option_flag=0
-flag_option_flag=0
-
-
-parse_params "$@"
-
-if ((flag_option_flag)); then
-    echo "flag option set"
-fi
-
-if ((abc_option_flag)); then            # Check if the flag options are set or ON:
-    # Logic for when --abc is set.
-    # "${abc_arg}" should also be set.
-    echo "Using --abc option -> arg: [${abc_arg}]"
-fi
-
-if ((a_option_flag)); then
-    # Logic for when -a is set.
-    # "${a_arg}" should also be set.
-    echo "Using -a option -> arg: [${a_arg}]"
-fi
+#!/usr/bin/env bash
+
+# !! DRAFT !!
+
+# https://betterdev.blog/minimal-safe-bash-script-template/
+# https://medium.com/better-programming/my-minimal-safe-bash-script-template-300759114040
+# https://github.com/koalaman/shellcheck
+
+
+set -E -o errexit -o nounset -o pipefail
+trap cleanup SIGINT SIGTERM ERR EXIT
+
+readonly SCRIPT_NAME=$(basename "${BASH_SOURCE[0]}")
+readonly SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)
+readonly ERROR_CODE=90
+
+function usage() {
+  cat <<-EOT
+Usage: ${SCRIPT_NAME} [-h | --help] [-a <ARG>] [--abc <ARG>] [-f | --flag]
+DESCRIPTION
+    Your description here.
+OPTIONS:
+-h, --help
+        Print this help and exit.
+-f, --flag
+        Description for flag option.
+-a
+        Description for the -a option.
+--abc
+        Description for the --abc option.
+EOT
+}
+
+function cleanup() {
+  trap - SIGINT SIGTERM ERR EXIT
+  # script cleanup here
+}
+
+function msg() {
+  echo >&2 -e "${1-}"
+}
+
+function die() {
+  local msg="$1"
+  local code="${2:-$ERROR_CODE}"
+  echo "$msg" >&2
+  exit "$code"
+}
+
+function parse_params() {
+  local EXTRA_ARGS=()
+
+  for ARG in "$@"; do
+    case "$ARG" in
+      --abc)
+        abc_option_flag=1
+        shift
+        readonly abc_arg="$1"
+        shift
+        ;;
+
+      -a)
+        a_option_flag=1
+        shift
+        readonly a_arg="$1"
+        shift
+        ;;
+
+      --help | -h)
+        usage
+        exit 0
+        shift
+        ;;
+
+      --flag | -f)
+        flag_option_flag=1
+        shift
+        ;;
+
+      --)
+        shift
+        break
+        ;;
+
+      *)
+        EXTRA_ARGS+=("$opt")
+        ;;
+
+    esac
+  done
+
+  # join EXTRA_ARGS a ARGS
+}
+
+# MAIN
+
+a_option_flag=0
+abc_option_flag=0
+flag_option_flag=0
+
+
+parse_params "$@"
+
+if ((flag_option_flag)); then
+    echo "flag option set"
+fi
+
+if ((abc_option_flag)); then            # Check if the flag options are set or ON:
+    # Logic for when --abc is set.
+    # "${abc_arg}" should also be set.
+    echo "Using --abc option -> arg: [${abc_arg}]"
+fi
+
+if ((a_option_flag)); then
+    # Logic for when -a is set.
+    # "${a_arg}" should also be set.
+    echo "Using -a option -> arg: [${a_arg}]"
+fi