more like a fix now for terminal title

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

diff --git a/scripts/tty/terminal_titler.sh b/scripts/tty/terminal_titler.sh
index 1856f7265074af8a7961d130569c32d7796150bf..7ced5c9fc83caa8093a303fb5406a936b29c39aa 100644 (file)
--- a/scripts/tty/terminal_titler.sh
+++ b/scripts/tty/terminal_titler.sh
@@ -3,7 +3,8 @@
 source "$FEISTY_MEOW_SCRIPTS/core/functions.sh"
 source "$FEISTY_MEOW_SCRIPTS/core/common.alias"
 
-#export PRIOR_TERMINAL_TITLE
+# uncomment this to get extra noisy debugging.
+#export DEBUG_TERM_TITLE=true
 
 # puts a specific textual label on the terminal title bar.
 # this doesn't consider any previous titles; it just labels the terminal.
@@ -16,7 +17,8 @@ function apply_title_to_terminal()
     title="$(hostname)"
   fi
   
-  if [ "${TERM}" != "dumb" -a -z "$PBS_ENVIRONMENT" -a ! -z "$PS1" ]; then
+  if [ "${TERM}" != "dumb" -a -z "$PBS_ENVIRONMENT" -a \
+        ! -z "$PS1" -a "${TERM}" != "linux" ]; then
     echo -n -e "\033]0;${title}\007"
   else
     # not running interactively, so just echo the title.
@@ -30,27 +32,50 @@ function apply_title_to_terminal()
 function set_terminal_title()
 {
   apply_title_to_terminal $*
-  # an echo or some interaction with terminal seems needed to get terminal to respond
-  # so we will see the current title when we query for it.
-  echo
+
+#tricky attempts to get it to be available when we ask for it in get_terminal_title
+  sync
+#  echo -n
+
+#  # we're enforcing a new title from here on.
+#  unset PRIOR_TERMINAL_TITLE
   save_terminal_title
 }
 
-# reads the current terminal title, if possible, and saves it to our record.
-function save_terminal_title()
+# echoes back the current title on the terminal window, if we can acquire it.
+function get_terminal_title()
 {
+  # this is an important value now; it is checked for in save_terminal_title.
+  local term_title_found="unknown"
   # save the former terminal title if we're running in X with xterm.
   which xprop &>/dev/null
   if [ $? -eq 0 ]; then
-    # make sure we're actually using xterm *and* that we have a window ID.
-    if [[ "$TERM" =~ .*"xterm".* && ! -z "$WINDOWID" ]]; then
-      local prior_title="$(xprop -id $WINDOWID | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
-      if [ ! -z "$prior_title" ]; then
-echo "saving prior terminal title as '$prior_title'"
-        export PRIOR_TERMINAL_TITLE="$prior_title"
-      else
-echo "not saving prior terminal title which was empty"
-      fi
+    # gnome-terminal doesn't set WINDOWID currently, but we can work around this.
+    if [[ -z "$WINDOWID" && ! -z "$(which xwininfo)" ]]; then
+#not good solution.      term_title_found="$(xprop -id $(xdotool getactivewindow) | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
+      term_title_found=$(xwininfo -id $(xprop -root | awk '/NET_ACTIVE_WINDOW/ { print $5; exit }') | awk -F\" '/xwininfo:/ { print $2; exit }')
+    # check if we're actually using xterm *and* that we have a window ID.
+    elif [[ "$TERM" =~ .*"xterm".* && ! -z "$WINDOWID" ]]; then
+      term_title_found="$(xprop -id $WINDOWID | perl -nle 'print $1 if /^WM_NAME.+= \"(.*)\"$/')"
+    fi
+  fi
+  echo -n "$term_title_found"
+}
+
+# reads the current terminal title, if possible, and saves it to our record.
+function save_terminal_title()
+{
+  local title="$(get_terminal_title)"
+  if [ "$title" != "unknown" ]; then
+    # there was a title, so save it.
+    if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+      echo "saving prior terminal title as '$title'"
+    fi
+    export PRIOR_TERMINAL_TITLE="$title"
+  else
+    # the terminal had no title, or we couldn't access it, or there's no terminal.
+    if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+      echo "not saving prior terminal title which was empty"
     fi
   fi
 }
@@ -64,7 +89,9 @@ function restore_terminal_title()
 
   # run the terminal labeller to restore the prior title, if there was one.
   if [ ! -z "$PRIOR_TERMINAL_TITLE" ]; then
-echo "restoring prior terminal title of '$PRIOR_TERMINAL_TITLE'"
+    if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+      echo "restoring prior terminal title of '$PRIOR_TERMINAL_TITLE'"
+    fi
     apply_title_to_terminal "$PRIOR_TERMINAL_TITLE"
   fi
 }
@@ -74,23 +101,25 @@ function label_terminal_with_info()
 {
   # we only label the terminal anew if there's no saved title.
   if [ -z "$PRIOR_TERMINAL_TITLE" ]; then
-echo "showing new generated title since prior title was empty"
+    if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+      echo "showing new generated title since prior title was empty"
+    fi
     pruned_host=$(echo $HOSTNAME | sed -e 's/^\([^\.]*\)\..*$/\1/')
     date_string=$(date +"%Y %b %e @ %T")
-    user=$USER
+    user="$(logname)"
     if [ -z "$user" ]; then
       # try snagging the windoze name.
       user=$USERNAME
     fi
     new_title="-- $user@$pruned_host -- [$date_string]"
     apply_title_to_terminal "$new_title"
-#needing this extra echo is awful.  is there a better way?
-    echo
     save_terminal_title
   else
     # use the former title; paste it back up there just in case.
-echo "showing prior terminal title since there was a prior title!"
-echo "using prior terminal title of '$PRIOR_TERMINAL_TITLE'"
+    if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+      echo "showing prior terminal title since there was a prior title!"
+      echo "using prior terminal title of '$PRIOR_TERMINAL_TITLE'"
+    fi
     apply_title_to_terminal "$PRIOR_TERMINAL_TITLE"
   fi
 }