tasty revision to load feisty for full use

[feisty_meow.git] / scripts / tty / terminal_titler.sh

diff --git a/scripts/tty/terminal_titler.sh b/scripts/tty/terminal_titler.sh
index 3c01d611faf1bd5ab430e4a7896de45e828ec34c..329ec57c7664fc563dddba10e2f0b2c7754b0fa3 100644 (file)
--- a/scripts/tty/terminal_titler.sh
+++ b/scripts/tty/terminal_titler.sh
@@ -1,23 +1,52 @@
 #!/bin/bash
 
-source $FEISTY_MEOW_SCRIPTS/core/functions.sh
+source "$FEISTY_MEOW_SCRIPTS/core/functions.sh"
 
 # just saying this is an array...
-declare -a PRIOR_TERMINAL_TITLES
+#declare -a PRIOR_TERMINAL_TITLES
+
 # set the stack position if not already set.
 if [ -z "$PTT_STACK_INDEX" ]; then
   # this variable records where we will push new items on the stack.
   PTT_STACK_INDEX=0
 fi
 
+# returns okay (0) if the stack is empty, or non-zero if not empty.
+function ptt_stack_empty()
+{
+  if [ -z "$PTT_STACK_INDEX" ]; then
+    # fix the index value.
+    PTT_STACK_INDEX=0
+    true
+  else
+    test $PTT_STACK_INDEX -le 0
+  fi
+}
+
+# a debugging function that should never have been necessary.
+# a little bit furious the restore is failing during regenerate right now.
+function show_terminal_titles()
+{
+  sep 14
+  echo "[terminal title list now has...]"
+  local i=${#PRIOR_TERMINAL_TITLES[@]}
+  if ptt_stack_empty; then
+    echo the terminal title list is empty.
+  else
+    while ((i--)); do
+      echo "ent #$i: '${PRIOR_TERMINAL_TITLES[$i]}'"
+    done
+  fi
+  sep 14
+}
+
 # adds an entry into the stack of terminal titles.
 function push_ptt_stack()
 {
   PRIOR_TERMINAL_TITLES[$PTT_STACK_INDEX]="$*"
-echo now list has:
-echo ${PRIOR_TERMINAL_TITLES[@]}
   ((PTT_STACK_INDEX++))
-echo stack index incremented and now at $PTT_STACK_INDEX
+#echo stack index incremented and now at $PTT_STACK_INDEX
+#show_terminal_titles
 }
 
 function pop_ptt_stack()
@@ -26,17 +55,13 @@ function pop_ptt_stack()
     echo nothing to pop from prior terminal titles stack.
   else
     ((PTT_STACK_INDEX--))
-echo stack index decremented and now at $PTT_STACK_INDEX
+#echo stack index decremented and now at $PTT_STACK_INDEX
     CURRENT_TERM_TITLE="${PRIOR_TERMINAL_TITLES[$PTT_STACK_INDEX]}"
+#echo "got the last title as '$CURRENT_TERM_TITLE'"
+#show_terminal_titles
   fi
 }
 
-# returns okay (0) if the stack is empty, or non-zero if not empty.
-function ptt_stack_empty()
-{
-  test $PTT_STACK_INDEX -le 0
-}
-
 # puts a specific textual label on the terminal title bar.
 # this doesn't consider any previous titles; it just labels the terminal.
 # the title may not be visible in some window managers.
@@ -56,10 +81,15 @@ function save_terminal_title()
   # save the former terminal title if we're running in X with xterm.
   which xprop &>/dev/null
   if [ $? -eq 0 ]; then
-    if [[ "$TERM" =~ .*"xterm".* ]]; then
+    # make sure we're actually using xterm *and* that we have a window ID.
+    if [[ "$TERM" =~ .*"xterm".* && ! -z "$WINDOWID" ]]; then
       local prior_title="$(xprop -id $WINDOWID | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
-echo "saving prior terminal title as '$prior_title'"
-      push_ptt_stack "$prior_title"
+      if [ ! -z "$prior_title" ]; then
+#echo "saving prior terminal title as '$prior_title'"
+        push_ptt_stack "$prior_title"
+#      else
+#echo "not saving prior terminal title which was empty"
+      fi
     fi
   fi
 }
@@ -72,11 +102,9 @@ function restore_terminal_title()
 #  if [ -z "$(echo $* | grep git)" ]; then
 
   # run the terminal labeller to restore the prior title, if there was one.
-  if ptt_stack_empty; then
-echo prior titles were empty, so doing nothing.
-  else
+  if ! ptt_stack_empty; then
     pop_ptt_stack
-echo "restoring prior terminal title of '$CURRENT_TERM_TITLE'"
+#echo "restoring prior terminal title of '$CURRENT_TERM_TITLE'"
     set_terminal_title "$CURRENT_TERM_TITLE"
   fi
 }
@@ -85,7 +113,6 @@ echo "restoring prior terminal title of '$CURRENT_TERM_TITLE'"
 function label_terminal_with_info()
 {
   # we only label the terminal anew if there's no saved title.
-#  if [ -z "$PRIOR_TERMINAL_TITLE" ]; then
   if ptt_stack_empty; then
     pruned_host=$(echo $HOSTNAME | sed -e 's/^\([^\.]*\)\..*$/\1/')
     date_string=$(date +"%Y %b %e @ %T")
@@ -97,8 +124,12 @@ function label_terminal_with_info()
     new_title="-- $user@$pruned_host -- [$date_string]"
     set_terminal_title "$new_title"
   else
-    # restore the former title.
-    restore_terminal_title
+    # use the former title; paste it back up there just in case.
+#echo "showing prior terminal title since there was a prior title!"
+    pop_ptt_stack
+#echo "using prior terminal title of '$CURRENT_TERM_TITLE'"
+    set_terminal_title "$CURRENT_TERM_TITLE"
+    push_ptt_stack "$CURRENT_TERM_TITLE"
   fi
 }