Add prompt generation commands for git/kubernetes

bash/.functions

@@ -18,6 +18,49 @@ maths()
 
 cat_with_newline()
 {
-  cat "$@" && echo
+  \cat "$@" && echo
 }
 alias cat="cat_with_newline"
+
+k_prompt()
+{
+  set -x
+  if [ -z ${KUBE_PROMPT+x} ]; then
+    export KUBE_PROMPT=1
+  else
+    unset KUBE_PROMPT
+  fi
+  set +x
+}
+
+kube_prompt()
+{
+  set -x
+  if ! [ -z ${KUBE_PROMPT+x} ]; then
+    context=$(\cat ${KUBECONFIG} \
+              | grep "current-context: " \
+              | sed "s/current-context: //")
+    echo {$context}
+  fi
+  set +x
+}
+
+g_prompt()
+{
+  if ! [ -z ${GIT_PROMPT+x} ]; then
+    export GIT_PROMPT=1
+  else
+    unset GIT_PROMPT
+  fi
+}
+
+git_prompt()
+{
+  if ! [ -z ${GIT_PROMPT+x} ]; then
+    # Determine if we are in a git repository
+    if git rev-parse --is-inside-work-tree &> /dev/null; then
+      branch=$(git rev-parse --abbrev-ref HEAD)
+      echo [$branch]
+    fi
+  fi
+}