first functional commit

_libs/libbase.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+set -e
+
+# Function: EnsureRoot
+# Ensures that commands are being executed as root.
+function EnsureRoot {
+  if (( EUID != 0 )); then
+    echo "[X] Must run as root"
+    exit 100
+  fi
+}
+
+# Function: EchoBlanks
+# Echo number of blank lines indicated by input
+#
+# Parameters:
+# ${1} - The number of blank lines to echo
+function EchoBlanks {
+  local num_lines
+
+  # Strip non-numbers from input
+  num_lines="${1//[^0-9]/}"
+  if [[ -z "${num_lines}" ]]; then
+    num_lines=0
+  fi
+
+  if [[ "${num_lines}" -ne 0 ]]; then
+    for ((i = 0; i < num_lines; i++)); do
+      echo ""
+    done
+  fi
+}
+
+# Function: StatusEcho
+# Echos out provided text in inverted colors so it stands out
+#
+# Parameters:
+# ${1} - The text to send
+# ${2} - The number of leading empty lines before the echo
+# ${3} - The number of trailing empty lines after the echo
+function StatusEcho {
+  EchoBlanks "${2}"
+  echo -e "\e[7m${1} \e[0m"
+  EchoBlanks "${3}"
+}
+
+# Function: WarningEcho
+# Echos out provided text as white letters on a red background so it stands out.
+#
+# Parameters:
+# ${1} - The text to send
+# ${2} - The number of leading empty lines before the echo
+# ${3} - The number of trailing empty lines after the echo
+function WarningEcho {
+  EchoBlanks "${2}"
+  echo -e "\e[97m\e[41m${1} \e[0m"
+  EchoBlanks "${3}"
+}
+
+# Function: CyanEcho
+# Echos out provided text as Light Cyan letters on a black background so it stands out.
+#
+# Parameters:
+# ${1} - The text to send
+# ${2} - The number of leading empty lines before the echo
+# ${3} - The number of trailing empty lines after the echo
+function CyanEcho {
+  EchoBlanks "${2}"
+  echo -e "\e[96m\e[40m${1} \e[0m"
+  EchoBlanks "${3}"
+}
+
+# Function: pushd
+# Overrides default pushd functionatlity to suppress console messages.
+function pushd {
+  command pushd "$@" >/dev/null
+}
+
+# Function: popd
+# Overrides default popd functionatlity to suppress console messages.
+function popd {
+  command popd >/dev/null
+}