#--------------------------
# /etc/prompt - sets bash prompt
#
# To use it run
# . /etc/prompt
#
# should be called after keychain (it uses keychain env vars (SSH_..) to detect if host is remote)
#
#
# Sample "line-shot"
#
# Default user on default host in home dir
# ~>
#
# As before but Last command has return code 13, system bell is sounded
# 13 ~>
#
# User "lvv" on host "big" in "/tmp" dir, color of BIG set to specific color if set in config
# Hostname is alwais shown if host is remote.
# lvv@BIG /tmp >
#
# User "root" (almost all prompt set to magenta color)
# root /tmp>
#
#
# Features/Advantages
#
# Any terminal.
# All color prompt scripts that I've seen use hard coded terminal escape
# sequences for vt102/vt220. That is, they will not work on any other
# terminal. My prompt will work on on any terminfo terminal
#
# Shell Title
# Function set_shell_title() set xterm title, gnome-terminal tabs and gnu-screen labels.
# by default it current dir. It is also possible to use it for other info.
# I use it to display remote hostname or file names I am currently editing.
# (FIXME write how to do this)
# (FIXME make screen shots)
#
# Leonid@Volnitsky.com / 2007
#
################
#
# TOFIX: after "su -" hostname is not displayed
#
# TO CHECK:
# # GNU awk and sed have regex issues in a multibyte environment. If any locale
# # variables are set, then override by setting LC_ALL
# lvars=`locale 2>/dev/null | egrep -v '="?(|POSIX|C)"?$' 2>/dev/null`
# if [ -n "$lvars$LANG$LC_ALL" ]; then
# LC_ALL=C
# export LC_ALL
# fi
# TODO
# display git brach http://unboundimagination.com/Current-Git-Branch-in-Bash-Prompt
#---
# parse_git_branch() {
# git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
# }
# PS1="\w\$(parse_git_branch) $ "
#---
#git symbolic-ref HEAD
##################################################################### lvv Prompt
# echo "*** /etc/prompt on A, TERM=$TERM"
unset PROMPT_COMMAND
####### work aroud for MC bug
if [ -z "$TERM" -o "$TERM" = "dumb" -o -n "$MC_SID" ]; then
unset PROMPT_COMMAND
PS1='\w> '
return 0
fi
# if label non empty, append 1 space
label=${1:+$1 }
default_user=lvv # default user is not displayed
#default_host="tosha" # default host is not displayed
default_domain="lvvnet" # default domain is not deplayed, remote host is alwais shown
export who_where
set_shell_title() {
xterm_title() { echo -n "]2;${@}" ; }
screen_title() {
# FIXME: run this only if screen is in xterm (how to test for this?)
xterm_title "sCRn $label$plain_who_where $@"
# FIXME $STY not enherited though "su -"
[ "$STY" ] && screen -S $STY -X title "$@"
}
case $TERM in
screen*)
screen_title "$@"
;;
xterm* | rxvt* | gnome-terminal | konsole | eterm | wterm )
# is there a capability which we can to test
# for "set term title-bat" and its escapes?
#echo -n "]2;$label$plain_who_where $1"
xterm_title "$label$plain_who_where $@"
;;
*)
;;
esac
}
export -f set_shell_title
###################################################### ID (user name)
id=`id -un`
id=${id#$default_user}
###################################################### TTY
tty=`tty`
tty=`echo $tty | sed "s:/dev/pts/:p:; s:/dev/tty::" ` # RH tty devs
tty=`echo $tty | sed "s:/dev/vc/:vc:" ` # gentoo tty devs
if [[ "$TERM" = "screen" ]] ; then
# [ "$WINDOW" = "" ] && WINDOW="?"
#
# # if under screen then make tty name look like s1-p2
# # tty="${WINDOW:+s}$WINDOW${WINDOW:+-}$tty"
# tty="${WINDOW:+s}$WINDOW" # replace tty name with screen number
tty="$WINDOW" # replace tty name with screen number
fi
# we don't need tty name under X11
case $TERM in
xterm* | rxvt* | gnome-terminal | konsole | eterm | wterm ) unset tty ;;
*) ;;
esac
########################################################## ANSI
# FIXME: color config should be at the top
#
# black? 0 8
# red 1 9
# green 2 10
# yellow 3 11
# blue 4 12
# magenta 5 13
# cyan 6 14
# white 7 15
#
# terminfo setaf/setab - sets ansi foreground/background
# terminfo sgr0 - resets all atributes
# terminfo colors - number of colors
### if term support colors, then use color prompt, else bold
colors_reset='\['`tput sgr0`'\]'
#"bell='\['`tput bel`'\]'
bell=`tput bel`
# Workaround for UTF readline(?) bug. Dissable bell when UTF
locale |grep -qi UTF && bell=''
if [ "`tput colors`" -ge 8 ]; then # Colors
dir_color='\['`tput setaf 6; tput bold`'\]'
rc_color='\['`tput setaf 1;`$bell'\]'
root_id_color='\['`tput setaf 5`'\]'
else # B/W
dir_color='\['`tput bold`'\]'
rc_color='\['`tput bold;`$bell'\]'
fi
########################################################### HOST
### we don't display home host/domain $SSH_* set by SSHD or keychain
# is sshd our perent?
if [[ "$SSH_AUTH_SOCK" ]] ||
for ((pid=$$; $pid != 1 ; pid=`ppid_of $pid`)); do ps h -o command -p $pid; done | grep -q sshd
then
host=${HOSTNAME}
#host=`hostname --short`
#host=`echo ${host%$default_host} | tr a-z A-Z`
host=`echo ${host} | tr a-z A-Z`
# don't use bright, margenta(5),
case $host in
TOSHA) host_color='\['`tput setaf 3`'\]' ;;
TASHA) host_color='\['`tput setaf 6`'\]' ;;
AL) host_color='\['`tput setaf 2`'\]' ;;
SH) host_color='\['`tput setaf 4`'\]' ;;
LVV) host_color='\['`tput setaf 4`'\]' ;;
AHP) host_color='\['`tput setaf 7`'\]' ;;
esac
else
host=""
fi
# we already should have short host name, but just in case
host=${host%.localdoman}
host=${host%.$default_domain}
########################################################### WHO_WHERE
# who_ware. Is constant. Looks like
# [user@]host[-tty]
color_who_where="${id:+$id@}$host_color$host${tty:+ $tty}"
plain_who_where="${id:+$id@}$host"
# remove trailing "@" if any
color_who_where="${color_who_where%@}"
plain_who_where="${plain_who_where%@}"
# add traling " "
color_who_where="$color_who_where "
plain_who_where="$plain_who_where "
# if $who_where==" " then who_where=""
color_who_where="${color_who_where## }"
plain_who_where="${plain_who_where## }"
# if root then highlight who_where
if [ "$id" == "root" ] ; then
color_who_where="$root_id_color$color_who_where$colors_reset"
fi
############################################################### PROMPT_COMMAND
PROMPT_COMMAND='
rc="$?"
if [[ "$rc" = "0" ]]; then
rc=""
else
#rc="$rc_color$rc$colors_reset$bell "
rc="$rc_color$rc$colors_reset "
fi
set_shell_title "$PWD/"
# truncate $PWD to $max
max=35
front=7
head=${PWD:0:$front}"..."
# LOCAL
# GIT
if [[ -d .git || -d ../.git || -d ../../.git ]]; then
local=`git branch -a |sed -n "s/^* //p"`
local=${local+($local)}
fi
#PS1="$label$rc'$color_who_where$dir_color'${head:10*(${#PWD}<max)}${PWD:(${#PWD}>max)*(${#PWD}-max):max}> '$colors_reset'"
PS1="$label$rc'$color_who_where$dir_color'\w$local> '$colors_reset'"
unset local
'
#echo \"$color_who_where\"
unset rc id tty bell default_user default_host
unset rc_colors dir_color root_id_color
# vim: set syntax=sh:
