source "$FEISTY_MEOW_SCRIPTS/core/functions.sh"
source "$FEISTY_MEOW_SCRIPTS/core/common.alias"
-# just saying this is an array...
-#declare -a PRIOR_TERMINAL_TITLES
-#and that whole approach fails; arrays aren't passed to subshells, so any commands
-# that execute in a subshell don't know about the contents and thus don't do what we want.
-#hmmm: revise back to single level memory.
-
-# 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[$i]}'"
- done
- fi
- sep 14
-}
+# uncomment this to get extra noisy debugging.
+#export DEBUG_TERM_TITLE=true
-# adds an entry into the stack of terminal titles.
-function push_ptt_stack()
-{
- PRIOR_TERMINAL_TITLES[$PTT_STACK_INDEX]="$*"
- ((PTT_STACK_INDEX++))
-echo stack index incremented and now at $PTT_STACK_INDEX
-show_terminal_titles
-}
-
-function pop_ptt_stack()
-{
- if [ $PTT_STACK_INDEX -le 0 ]; then
- echo nothing to pop from prior terminal titles stack.
- else
- ((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
-}
+##############
# 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.
-function reset_terminal_title()
+function apply_title_to_terminal()
{
title="$*"
# if we weren't given a title, then use just the hostname. this is the degraded functionality.
title="$(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.
sep
- echo ${title}
+ echo "${title}"
sep
fi
}
-# user friendly version that saves the title being added.
-function set_terminal_title()
+##############
+
+# records the current terminal title, pushing it down on the stack of titles,
+# possibly prior to a new one being used.
+function save_terminal_title()
{
- save_terminal_title
- reset_terminal_title $*
-#reading a line made it update.
-#echo "what is title now?"
-#read line
-#this doesn't make it update. echo -n
-echo
- save_terminal_title
+ local title="$*"
+
+ if [ -z "$title" ]; then
+ if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+ echo "terminal_titler: empty title: pushing current title again"
+ fi
+ peek_title_stack
+ title="$LAST_TITLE"
+ if [ -z "$title" ]; then
+ log_feisty_meow_event "terminal_titler: there was no saved title, so we're ignoring the save attempt."
+ return 1
+ fi
+ fi
+
+#hmmm: need a validation step here to remove bad chars that conflict with our title compression scheme.
+
+ # only slap a comma after the existing value if it wasn't empty.
+ if [ -z "$TERMINAL_TITLE_STACK" ]; then
+ export TERMINAL_TITLE_STACK="\"$title\""
+ else
+ export TERMINAL_TITLE_STACK="$TERMINAL_TITLE_STACK,\"$title\""
+ fi
+
+ if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+ echo "terminal_titler: new terminal title stack is:"
+ echo "$TERMINAL_TITLE_STACK"
+ fi
}
-# reads the current terminal title, if possible, and saves it to our stack of titles.
-function save_terminal_title()
+# takes a terminal title off the stack and sets the LAST_TITLE variable.
+function pop_title_stack()
+{
+ # whack our output variable, just in case.
+ unset LAST_TITLE
+ # get our stack top.
+ peek_title_stack
+ # trim the popped item out of the stack.
+ if [ ! -z "$TERMINAL_TITLE_STACK" ]; then
+ TERMINAL_TITLE_STACK="$(echo $TERMINAL_TITLE_STACK | sed -n -e 's/\(.*\),[^,]*$/\1/p')"
+ fi
+}
+
+# like pop, but does not change the stack, effectively handing you the most
+# recently set title.
+function peek_title_stack()
{
- # 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'"
- push_ptt_stack "$prior_title"
- else
-echo "not saving prior terminal title which was empty"
- fi
+ # whack our output variable, just in case.
+ unset LAST_TITLE
+
+ if [ ! -z "$TERMINAL_TITLE_STACK" ]; then
+ LAST_TITLE="$(echo $TERMINAL_TITLE_STACK | sed -n -e 's/.*","\([^,]*\)"$/\1/p')"
+ if [ -z "$LAST_TITLE" ]; then
+ LAST_TITLE="$(echo $TERMINAL_TITLE_STACK | sed -n -e 's/"//gp')"
fi
fi
}
# using our stored terminal title, this replaces the title on the terminal.
function restore_terminal_title()
{
-# we don't want to emit anything extra if this is being driven by git.
-#hmmm... this could be a problem?
-# if [ -z "$(echo $* | grep git)" ]; then
-
# run the terminal labeller to restore the prior title, if there was one.
- if ! ptt_stack_empty; then
- pop_ptt_stack
-echo "restoring prior terminal title of '$CURRENT_TERM_TITLE'"
- reset_terminal_title "$CURRENT_TERM_TITLE"
+ pop_title_stack
+
+ if [ ! -z "$LAST_TITLE" ]; then
+ if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+ echo "terminal_titler: restoring prior terminal title of '$LAST_TITLE'"
+ echo "terminal_titler: while new title stack is: $TERMINAL_TITLE_STACK"
+ fi
+ apply_title_to_terminal "$LAST_TITLE"
fi
}
function label_terminal_with_info()
{
# we only label the terminal anew if there's no saved title.
- if ptt_stack_empty; then
-echo "showing new generated title since title stack was empty"
+ if [ -z "$TERMINAL_TITLE_STACK" ]; then
+ if [ ! -z "$DEBUG_TERM_TITLE" ]; then
+ echo "terminal_titler: 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=$USER
+ user="$(fm_username)"
if [ -z "$user" ]; then
# try snagging the windoze name.
user=$USERNAME
fi
new_title="-- $user@$pruned_host -- [$date_string]"
- reset_terminal_title "$new_title"
+ apply_title_to_terminal "$new_title"
+ save_terminal_title "$new_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!"
- pop_ptt_stack
-echo "using prior terminal title of '$CURRENT_TERM_TITLE'"
- reset_terminal_title "$CURRENT_TERM_TITLE"
- push_ptt_stack "$CURRENT_TERM_TITLE"
+ peek_title_stack
+ apply_title_to_terminal "$LAST_TITLE"
fi
}
+##############
+
+# user friendly version sets the terminal title and saves the title being added.
+function set_terminal_title()
+{
+ apply_title_to_terminal $*
+ save_terminal_title $*
+}
+
+##############
+
projects / feisty_meow.git / blobdiff