X-Git-Url: https://feistymeow.org/gitweb/?a=blobdiff_plain;f=scripts%2Ftty%2Fterminal_titler.sh;h=a4e6a3fca9c711bd1d7c5458efd8ba9e59a11fa1;hb=ec0607714e0846cbf25687be2c915eb28b521f4c;hp=e4262498080b5f89d688d2efbd15c2fa00985e65;hpb=c86cc7027f274f36cc6a313397063971056f6318;p=feisty_meow.git diff --git a/scripts/tty/terminal_titler.sh b/scripts/tty/terminal_titler.sh index e4262498..a4e6a3fc 100644 --- a/scripts/tty/terminal_titler.sh +++ b/scripts/tty/terminal_titler.sh @@ -1,95 +1,94 @@ #!/bin/bash -source $FEISTY_MEOW_SCRIPTS/core/functions.sh +source "$FEISTY_MEOW_SCRIPTS/core/functions.sh" +source "$FEISTY_MEOW_SCRIPTS/core/common.alias" -# just saying this is an array... -#declare -a PRIOR_TERMINAL_TITLES +# uncomment this to get extra noisy debugging. +#export DEBUG_TERM_TITLE=true -# set the stack position if not already set. -if [ -z "$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() +# 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 apply_title_to_terminal() { - if [ -z "$PTT_STACK_INDEX" ]; then - # fix the index value. - PTT_STACK_INDEX=0 - true + title="$*" + # if we weren't given a title, then use just the hostname. this is the degraded functionality. + if [ -z "${title}" ]; then + title="$(hostname)" + fi + + if [ "${TERM}" != "dumb" -a -z "$PBS_ENVIRONMENT" -a \ + ! -z "$PS1" -a "${TERM}" != "linux" ]; then + echo -n -e "\033]0;${title}\007" else - test $PTT_STACK_INDEX -le 0 + # not running interactively, so just echo the title. + sep + echo "${title}" + sep 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() +############## + +# 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() { - 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 + 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 "$title" ]; then + log_feisty_meow_event "terminal_titler: there was no saved title, so we're ignoring the save attempt." + return 1 + fi fi - sep 14 -} -# adds an entry into the stack of terminal titles. -function push_ptt_stack() -{ - PRIOR_TERMINAL_TITLES[$PTT_STACK_INDEX]="$*" - ((PTT_STACK_INDEX++)) -#echo stack index incremented and now at $PTT_STACK_INDEX -#show_terminal_titles -} +#hmmm: need a validation step here to remove bad chars that conflict with our title compression scheme. -function pop_ptt_stack() -{ - if [ $PTT_STACK_INDEX -le 0 ]; then - echo nothing to pop from prior terminal titles stack. + # only slap a comma after the existing value if it wasn't empty. + if [ -z "$TERMINAL_TITLE_STACK" ]; then + export TERMINAL_TITLE_STACK="\"$title\"" else - ((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 + 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 } -# 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 set_terminal_title() +# takes a terminal title off the stack and sets the LAST_TITLE variable. +function pop_title_stack() { - title="$*" - # if we weren't given a title, then use just the hostname. this is the degraded functionality. - if [ -z "${title}" ]; then - title="$(hostname)" + # whack our output variable, just in case. + unset LAST_TITLE + # get our stack top. + peek_title_stack + # trim the popped item out of the stack. + if [ ! -z "$TERMINAL_TITLE_STACK" ]; then + TERMINAL_TITLE_STACK="$(echo $TERMINAL_TITLE_STACK | sed -n -e 's/\(.*\),[^,]*$/\1/p')" fi - echo -n -e "\033]0;${title}\007" } -# reads the current terminal title, if possible, and saves it to our stack of titles. -function save_terminal_title() +# 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 $TERMINAL_TITLE_STACK | sed -n -e 's/"//gp')" fi fi } @@ -97,15 +96,15 @@ function save_terminal_title() # using our stored terminal title, this replaces the title on the terminal. function restore_terminal_title() { -# we don't want to emit anything extra if this is being driven by git. -#hmmm... this could be a problem? -# if [ -z "$(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'" - set_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 } @@ -113,24 +112,36 @@ function restore_terminal_title() function label_terminal_with_info() { # we only label the terminal anew if there's no saved title. - if ptt_stack_empty; then + 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 -- [$date_string]" - set_terminal_title "$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 '$CURRENT_TERM_TITLE'" - set_terminal_title "$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 $* +} + +############## +