adding better variable detection

yadm

@@ -99,7 +99,7 @@ function main() {
 
   # parse command line arguments
   local retval=0
-  internal_commands="^(alt|bootstrap|clean|clone|config|decrypt|encrypt|enter|git-crypt|help|--help|init|introspect|list|perms|transcrypt|upgrade|version|verify|--version)$"
+  internal_commands="^(alt|bootstrap|clean|clone|config|decrypt|encrypt|enter|echo|git-crypt|help|--help|init|introspect|list|perms|transcrypt|upgrade|version|--version)$"
   if [ -z "$*" ] ; then
     # no argumnts will result in help()
     help
@@ -110,6 +110,8 @@ function main() {
     YADM_ARGS=()
     shift
 
+    
+
     # commands listed below do not process any of the parameters
     if [[ "$YADM_COMMAND" =~ ^(enter|git_crypt)$ ]] ; then
       YADM_ARGS=("$@")
@@ -144,7 +146,11 @@ function main() {
     [ ! -d "$YADM_WORK" ] && error_out "Work tree does not exist: [$YADM_WORK]"
     HOOK_COMMAND="$YADM_COMMAND"
     invoke_hook "pre"
-    $YADM_COMMAND "${YADM_ARGS[@]}"
+    if [[ "$YADM_COMMAND" =~ ^(echo)$ ]]; then
+      yecho "${YADM_ARGS[@]}"
+    else
+      $YADM_COMMAND "${YADM_ARGS[@]}"
+    fi
   else
     # any other commands are simply passed through to git
     HOOK_COMMAND="$1"
@@ -1117,6 +1123,7 @@ Commands:
   yadm enter [COMMAND]       - Run sub-shell with GIT variables set
   yadm git-crypt [OPTIONS]   - Run git-crypt commands for the yadm repo
   yadm transcrypt [OPTIONS]  - Run transcrypt commands for the yadm repo
+  yadm echo [OPTIONS]        - View yadm internal commands and file paths
 
 Files:
   \$HOME/.config/yadm/config        - yadm's configuration file
@@ -1400,8 +1407,7 @@ function version() {
 
 }
 
-function verify() {
-  #verify internal yadm variables
+function print_variables(){
   local local_class
   local local_system
   local local_host
@@ -1409,25 +1415,67 @@ function verify() {
   local local_distro
   set_local_alt_values
 
-  while [[ $# -gt 0 ]] ; do
-    case "$1" in
-      -o|--os)
-	echo "$local_system"
+  echo "Yadm variables:
+  distro=$local_distro
+  system=$local_system
+  hostname=$local_host
+  user=$local_user 
+  class=$local_class
+"
+}
+
+function print_paths(){
+  echo "${2}"
+  if [[ -z $2 ]] ; then
+    echo "yadm paths:
+  repo=$YADM_REPO
+  yadm_dir=$YADM_DIR
+  config=$YADM_CONFIG
+  encrypt=$YADM_ENCRYPT
+  archive=$YADM_ARCHIVE
+  "
+  else   
+    case "$2" in
+      repo)
+	echo $YADM_REPO
 	;;
-      -d|--distro)
-	echo "$local_distro"
+      dir|yadm_dir)
+	echo $YADM_DIR
 	;;
-      -u|--user)
-	echo "$local_user"
+      config)
+	echo $YADM_CONFIG
 	;;
-      -h|--host)
-	echo "$local_host"
+      encrypt)
+	echo $YADM_ENCRYPT
 	;;
-      -c|--class)
-	echo "$local_class"
+      archive)
+	echo $YADM_ARCHIVE
 	;;
       *)
-	#do nothing.
+	echo "$2 is not a valid option"
+    esac
+  fi
+ }
+
+function yecho() {
+  #verify internal yadm variables
+ 
+  if [[ $# -eq 0 ]] ; then
+    print_variables
+    print_paths
+  fi
+
+  while [[ $# -gt 0 ]] ; do
+    echo "$1"
+    case "$1" in
+      vars|variables)
+	print_variables "${YADM_ARGS[@]}"
+	;;
+      paths|path)
+	print_paths "${YADM_ARGS[@]}"
+	;;
+      *)
+	echo "$1 is not a valid command"
 	;;
     esac
     shift