Arch Installation Script

Misc/Arch-LuksCrpy-Install.bash

@@ -0,0 +1,151 @@
+#!/bin/bash
+#!/bin/bash
+
+echo_rgb() {
+  # Echo a colored string to the terminal based on rgb values
+  #
+  # Positional Arguments:
+  #
+  #   message <type: string> <position: 1> <required: true>
+  #     - The message to be printed to stdout
+  #   red <type: int> <position: 2> <required: true>
+  #     - The red value from 0 to 255
+  #   green <type: int> <position: 3> <required: true>
+  #     - The green value from 0 to 255
+  #   blue <type: int> <position: 4> <required: true>
+  #     - The blue value from 0 to 255
+  #
+  # Usage:
+  #   echo_rgb "Yep" 10 8 30
+  #
+  # POSIX Compliant:
+  #   N/A
+  #
+
+  local red
+  local green
+  local blue
+  local input
+
+  input="${1}"
+  red="${2}"
+  green="${3}"
+  blue="${4}"
+
+  printf "\e[0;38;2;%s;%s;%sm%s\e[m\n" "${red}" "${green}" "${blue}" "${input}"
+}
+
+important() {
+  echo_rgb "${1}" 135 195 255
+}
+
+log() {
+  # Print a message and send it to stdout or stderr depending upon log level, also configurable with debug etc.
+  #
+  # Arguments:
+  #   level <type: string> <position: 1> <required: true>
+  #     - The log level, defined within a case check in this function
+  #   message <type: string> <position: 2> <required: true>
+  #     - The info message
+  #   line_number <type: int> <position: 3> <required: false>
+  #     - The line number of the calling function (${LINNO})
+  #
+  # Usage:
+  #   log "info" "Could not find that directory"
+  #
+  # POSIX Compliant:
+  #   Yes
+  #
+
+  # Set debug status depending if a global debug variable has been set to either 1 or 0
+  local debug
+  if [ ${DEBUG} ]; then
+    debug=${DEBUG}
+  else
+    debug=0
+  fi
+
+  local FORMAT
+  FORMAT="[$(echo_rgb "$(date +%Y-%m-%dT%H:%M:%S)" 180 140 255)]"
+
+  # Convert the level to uppercase
+  local level
+  level=$(echo "${1}" | tr '[:lower:]' '[:upper:]')
+
+  local message
+  message="${2}"
+
+  case "${level}" in
+    INFO)
+      # Output all info log levels to stdout
+      printf "${FORMAT}[$(echo_rgb "INFO" 0 140 255)] %s\n" "${message}" >&1
+      return 0
+      ;;
+    WARN | WARNING)
+      # Output all warning log levels to stdout
+      printf "${FORMAT}[$(echo_rgb "WARNING" 255 255 0)] %s\n" "${message}" >&1
+      return 0
+      ;;
+    DEBUG)
+      # Output all debug log levels to stdout
+      if [ "${DEBUG}" ]; then
+        printf "${FORMAT}[$(echo_rgb "DEBUG" 0 160 110)] %s\n" "${message}" >&1
+      fi
+      return 0
+      ;;
+    ERROR)
+      # Output all error log levels to stderr
+      printf "${FORMAT}[$(echo_rgb "ERROR" 255 0 0)] %s\n" "${message}" >&2
+      return 0
+      ;;
+    # Further log levels can be added by extending this switch statement with more comparisons
+
+    *) # Default case, no matches
+      # Returns non-zero code as an improper log option was passed, this helps with using `set -e`
+      printf "${FORMAT}[ERROR] %s\n" "Invalid log level passed, received level \"${level}\" with message \"${message}\"" >&2
+      return 1
+      ;;
+  esac
+}
+
+
+get_available_disks() {
+  local available_disks
+  available_disks=()
+
+  local disk_line
+  while read -r; do
+    # tr is used to change multiple whitespaces into a single space for processing by cut
+    disk_line="$(echo "${REPLY}" | tr -s " " | cut -d " " -f6)"
+    if [[ "${disk_line}" = "disk" ]]; then
+      # Add the found disk to our array
+      available_disks+=("$(echo "${REPLY}" | cut -d " " -f1)")
+    fi
+
+  done <<< "$(lsblk)"
+
+  local ret_val
+  # Build the array into a string, yes this is less efficient, but easier to modify in the future if something changes
+  for disk in "${available_disks[@]}"; do
+    ret_val="${ret_val} ${disk}"
+  done
+
+  echo "${ret_val}"
+}
+
+install() {
+
+  local available_disks
+
+  log "info" "Querying system for available disks..."
+  available_disks="$(get_available_disks)"
+  log "info" "Available disks: $(important "${available_disks}")"
+
+}
+
+main() {
+  install
+}
+
+main "$@"
+