-

lib/sharedFunctions.sh

@@ -12,6 +12,7 @@
 #
 # ##################################################
 
+
 # Traps
 # ------------------------------------------------------
 # These functions are for use with different trap scenarios
@@ -376,11 +377,76 @@ function pauseScript() {
   fi
 }
 
-
-
-
-
-
+function in_array() {
+    # Determine if a value is in an array.
+    # Usage: in_array [VALUE] [ARRAY]
+    local value=$1; shift
+    for item in "$@"; do
+        [[ $item == $value ]] && return 0
+    done
+    return 1
+}
+
+# Text Transformations
+# -----------------------------------
+# Transform text using these functions.
+# Adapted from https://github.com/jmcantrell/bashful
+# -----------------------------------
+
+lower() {
+  # Convert stdin to lowercase.
+  # usage:  text=$(lower <<<"$1")
+  #         echo "MAKETHISLOWERCASE" | lower
+  tr '[:upper:]' '[:lower:]'
+}
+
+upper() {
+  # Convert stdin to uppercase.
+  # usage:  text=$(upper <<<"$1")
+  #         echo "MAKETHISUPPERCASE" | upper
+  tr '[:lower:]' '[:upper:]'
+}
+
+ltrim() {
+  # Removes all leading whitespace (from the left).
+  local char=${1:-[:space:]}
+    sed "s%^[${char//%/\\%}]*%%"
+}
+
+rtrim() {
+  # Removes all trailing whitespace (from the right).
+  local char=${1:-[:space:]}
+  sed "s%[${char//%/\\%}]*$%%"
+}
+
+trim() {
+  # Removes all leading/trailing whitespace
+  # Usage examples:
+  #     echo "  foo  bar baz " | trim  #==> "foo  bar baz"
+  ltrim "$1" | rtrim "$1"
+}
+
+squeeze() {
+  # Removes leading/trailing whitespace and condenses all other consecutive
+  # whitespace into a single space.
+  #
+  # Usage examples:
+  #     echo "  foo  bar   baz  " | squeeze  #==> "foo bar baz"
+
+  local char=${1:-[[:space:]]}
+  sed "s%\(${char//%/\\%}\)\+%\1%g" | trim "$char"
+}
+
+squeeze_lines() {
+    # <doc:squeeze_lines> {{{
+    #
+    # Removes all leading/trailing blank lines and condenses all other
+    # consecutive blank lines into a single blank line.
+    #
+    # </doc:squeeze_lines> }}}
+
+    sed '/^[[:space:]]\+$/s/.*//g' | cat -s | trim_lines
+}