Major refactoring of the code and more features
* modular function for building the prompt from the othe functions * use tput for colors, everywhere * show the standing commit numbers * support branches without remote * check if a battery is present * show error codes of previous commands * use ± as the prompt mark within git directories * somewhat different colors
This commit is contained in:
Aurelien Requiem
nojhan
parent
fe0a65b177
commit
258ec164ef
438
prompt.bash
438
prompt.bash
@ -1,6 +1,6 @@
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#!/bin/bash
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# An intelligent an non intrusive prompt for bash
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# An intelligent and non intrusive prompt for bash
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# Licensed under the AGPL version 3
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#
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@ -18,69 +18,63 @@
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# 2012 (c) nojhan <nojhan@gmail.com>
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# 2012 (c) Aurelien Requiem <aurelien@requiem.fr> #major rewrite and adaptation
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# Below are function for having a flexible dynamic prompt for power user:
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# - display the colored hostname when connected via ssh
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# - when root, color in yellow the [username path] and in red the sharp
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# - when user, print the colored git branch name (if in a git repository):
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# red = some changes are not commited, yellow = some commits are not pushed,
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# green = no changes or commits
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# - if necessary, print a counter for jobs that are attached to the current term (e.g. xterm &)
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# or that are sleeping (e.g. Ctrl-z)
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# - display the battery level (if necessary), with colormap (if any battery attached)
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# - if necessary, prints a counter for jobs that are attached to the current
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# term (e.g. xterm &) or that are sleeping (e.g. Ctrl-z)
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# - display the load average, colored with a colormap
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# - display the battery level (if necessary), with colormap
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# - displays the colored login@hostname
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# - when root displays in red
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# - when user displays in green
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# - displays the current path in blue
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# - when user, print the colored git branch name (if in a git repository):
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# red = some changes are not commited, and yellow in parenthesis any unpushed commits (if any)
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# yellow = some commits are not pushed. Number of commits in parenthesis
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# green = no changes or commits
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# Some colors
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BLUE="\[\033[0;34m\]"
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LIGHT_GRAY="\[\033[0;37m\]"
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LIGHT_GREEN="\[\033[1;32m\]"
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LIGHT_BLUE="\[\033[1;34m\]"
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LIGHT_CYAN="\[\033[1;36m\]"
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YELLOW="\[\033[1;33m\]"
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WHITE="\[\033[1;37m\]"
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RED="\[\033[0;31m\]"
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NO_COL="\[\033[00m\]"
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# Check for recent enough version of bash.
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[ -z "$BASH_VERSION" -o -z "$PS1" ] && return;
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#################
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# Where are we? #
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#################
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THIS_TTY=tty`ps aux | grep $$ | grep bash | awk '{ print $7 }'`
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SESS_SRC=`who | grep $THIS_TTY | awk '{ print $6 }'`
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# Are we in an SSH connexion?
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SSH_FLAG=0
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SSH_IP=`echo $SSH_CLIENT | awk '{ print $1 }'`
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if [ $SSH_IP ] ; then
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SSH_FLAG=1
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fi
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SSH2_IP=`echo $SSH2_CLIENT | awk '{ print $1 }'`
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if [ $SSH2_IP ] ; then
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SSH_FLAG=1
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fi
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if [ $SSH_FLAG -eq 1 ] ; then
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CONN=ssh
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elif [ -z $SESS_SRC ] ; then
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CONN=lcl
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elif [ $SESS_SRC = "(:0.0)" -o $SESS_SRC = "" ] ; then
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CONN=lcl
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else
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CONN=tel
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bash=${BASH_VERSION%.*}; bmajor=${bash%.*}; bminor=${bash#*.}
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if [ $bmajor -lt 3 ] || [ $bmajor -eq 3 -a $bminor -lt 2 ]; then
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unset bash bmajor bminor
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return
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fi
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unset bash bmajor bminor
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###############
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# Who are we? #
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###############
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BLACK="\[$(tput setaf 0)\]"
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if [ `/usr/bin/whoami` = "root" ] ; then
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USR=u_root
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else
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USR=nou_root
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fi
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GRAY="\[$(tput bold ; tput setaf 0)\]"
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LIGHT_GREY="\[$(tput setaf 7)\]"
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WHITE="\[$(tput bold ; tput setaf 7)\]"
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RED="\[$(tput setaf 1)\]"
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LIGHT_RED="\[$(tput bold ; tput setaf 1)\]"
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WARN_RED="\[$(tput setaf 0 ; tput setab 1)\]"
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CRIT_RED="\[$(tput bold; tput setaf 7 ; tput setab 1)\]"
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GREEN="\[$(tput setaf 2)\]"
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LIGHT_GREEN="\[$(tput bold ; tput setaf 2)\]"
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YELLOW="\[$(tput setaf 3)\]"
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LIGHT_YELLOW="\[$(tput bold ; tput setaf 3)\]"
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BLUE="\[$(tput setaf 4)\]"
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LIGHT_BLUE="\[$(tput bold ; tput setaf 4)\]"
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PURPLE="\[$(tput setaf 5)\]"
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PINK="\[$(tput bold ; tput setaf 5)\]"
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CYAN="\[$(tput setaf 6)\]"
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LIGHT_CYAN="\[$(tput bold ; tput setaf 6)\]"
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NO_COL="\[$(tput sgr0)\]"
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__CPUNUM=$(grep ^processor /proc/cpuinfo | wc -l)
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#####################################
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# Count the number of attached jobs #
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@ -88,23 +82,22 @@ fi
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# Either attached running jobs (started with $ myjob &)
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# or attached stopped jobs (suspended with Ctrl-Z)
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jobcount()
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__jobcount_color()
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{
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rep=""
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running=`jobs -r | wc -l | tr -d " "`
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stopped=`jobs -s | wc -l | tr -d " "`
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running=`jobs -r | wc -l | tr -d " "`
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stopped=`jobs -s | wc -l | tr -d " "`
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if [ $running != "0" -a $stopped != "0" ] ; then
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rep=" ${running}r/${stopped}s"
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elif [ $running != "0" -a $stopped == "0" ] ; then
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rep=" ${running}r"
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elif [ $running == "0" -a $stopped != "0" ] ; then
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rep=" ${stopped}s"
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fi
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echo -ne "$rep"
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if [ $running != "0" -a $stopped != "0" ]
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then
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rep="${NO_COL}[${YELLOW}${running}r${NO_COL}/${LIGHT_YELLOW}${stopped}s${NO_COL}]"
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elif [ $running != "0" -a $stopped == "0" ]
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then
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rep="${NO_COL}[${YELLOW}${running}r${NO_COL}]"
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elif [ $running == "0" -a $stopped != "0" ]
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then
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rep="${NO_COL}[${LIGHT_YELLOW}${stopped}s${NO_COL}]"
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fi
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echo -ne "$rep"
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}
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######################
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@ -112,95 +105,98 @@ jobcount()
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######################
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# Get the branch name of the current directory
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git_branch()
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__git_branch()
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{
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if git rev-parse --git-dir >/dev/null 2>&1 ; then
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gitver=$(git branch 2>/dev/null| sed -n '/^\*/s/^\* //p')
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else
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return 0
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fi
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echo -e "$gitver"
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if git rev-parse --git-dir >/dev/null 2>&1 && [ ! -z "`git branch`" ]; then
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echo -n "$(git branch 2>/dev/null | sed -n '/^\*/s/^\* //p;')"
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fi
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}
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# Set a color depending on the branch state:
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# - green if the repository is up to date
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# - yellow if there is some commits not pushed
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# - red if there is changes to commit
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git_branch_color()
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__git_branch_color()
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{
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if git rev-parse --git-dir >/dev/null 2>&1 ; then
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red=`tput setaf 1`
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green=`tput setaf 2`
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yellow=`tput setaf 3`
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color=""
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if git diff --quiet 2>/dev/null >&2 ; then
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branch="$(git_branch)"
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has_commit=`git rev-list origin/$branch..$branch`
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if [ "$has_commit" != "" ] ; then
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color="${yellow}" # some commits to push
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else
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color="${green}" # nothing to commit or push
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fi
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else
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color="${red}" # changes to commit
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fi
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else
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return 0
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fi
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echo -ne $color
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}
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command -v git >/dev/null 2>&1 || return 1;
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branch=$(__git_branch)
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if [ ! -z "$branch" ] ; then
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git diff --quiet >/dev/null 2>&1
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GD=$?
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git diff --cached --quiet >/dev/null 2>&1
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GDC=$?
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has_commit=$(git rev-list --no-merges --count origin/${branch}..${branch} 2>/dev/null)
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if [ -z "$has_commit" ]; then
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has_commit=0
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fi
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if [ "$GD" -eq 1 -o "$GDC" -eq "1" ]; then
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if [ "$has_commit" -gt "0" ] ; then
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ret=" ${RED}${branch}${NO_COL}(${YELLOW}$has_commit${NO_COL})" # changes to commit and commits to push
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else
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ret=" ${RED}${branch}${NO_COL}" # changes to commit
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fi
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else
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if [ "$has_commit" -gt "0" ] ; then
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# some commit(s) to push
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ret=" ${YELLOW}${branch}${NO_COL}(${YELLOW}$has_commit${NO_COL})"
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else
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ret=" ${GREEN}${branch}${NO_COL}" # nothing to commit or push
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fi
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fi
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echo -ne "$ret"
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fi
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}
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##################
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# Battery status #
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##################
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# Get the battery status in percent
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battery()
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# returns 1 if no battery support
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__battery()
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{
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command -v acpi >/dev/null 2>&1 || { echo -n ""; return; }
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bat=`acpi --battery 2>/dev/null | sed "s/^Battery .*, \([0-9]*\)%.*$/\1/"`
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if [ "${bat}x" == "x" ] ; then
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echo -n ""
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return
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fi
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if [ ${bat} -lt 90 ] ; then
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echo -n " ${bat}%"
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else
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echo -n ""
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fi
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command -v acpi >/dev/null 2>&1 || return 1;
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bat=`acpi --battery 2>/dev/null | sed "s/^Battery .*, \([0-9]*\)%.*$/\1/"`
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if [ "${bat}" == "" ] ; then
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return 1
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fi
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if [ ${bat} -lt 90 ] ; then
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echo -n "${bat}"
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return 0
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else
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return 1
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fi
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}
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# Compute a gradient of background/forground colors depending on the battery status
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battery_color()
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# Compute a gradient of background/foreground colors depending on the battery status
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__battery_color()
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{
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gray=0
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red=1
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green=2
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yellow=3
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blue=4
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magenta=5
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cyan=6
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white=7
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bat=$(battery)
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if [ "$bat" != "" ] ; then
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if [ ${bat} -gt 80 ] ; then
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tput bold ; tput setaf ${gray}
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elif [ ${bat} -le 80 ] && [ ${bat} -gt 60 ] ; then
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tput bold ; tput setaf ${green}
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elif [ ${bat} -le 60 ] && [ ${bat} -gt 40 ] ; then
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tput bold ; tput setaf ${yellow}
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elif [ ${bat} -le 40 ] && [ ${bat} -gt 20 ] ; then
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tput bold ; tput setaf ${red}
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elif [ ${bat} -le 20 ] && [ ${bat} -gt 0 ] ; then
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tput setaf ${gray} ; tput setab ${red}
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else
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tput bold ; tput setaf ${white} ; tput setab ${red}
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fi
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else
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echo -n ""
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fi
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bat=$(__battery)
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if [ "$?" = "1" ] ; then return; fi; # no battery support
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if [ "$bat" != "" ] ; then
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if [ ${bat} -gt 75 ]; then
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return; # nothing displayed above 75%
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fi
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ret="${NO_COL}[battery="
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if [ ${bat} -le 75 ] && [ ${bat} -gt 50 ] ; then
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ret="${ret}${LIGHT_GREEN}"
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elif [ ${bat} -le 40 ] && [ ${bat} -gt 20 ] ; then
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ret="${ret}${LIGHT_YELLOW}"
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elif [ ${bat} -le 20 ] && [ ${bat} -gt 10 ] ; then
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ret="${ret}${LIGHT_RED}"
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elif [ ${bat} -le 10 ] && ${bat} -gt 5 ] ; then
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ret="${ret}${WARN_RED}"
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else
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ret="${ret}${CRIT_RED}"
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fi
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echo -ne "${ret}${bat}%${NO_COL}]"
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fi
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}
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@ -209,101 +205,99 @@ battery_color()
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###############
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# Get the load average
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load_out()
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__load()
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{
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load=`uptime | sed -e "s/.*load average: \(.*\...\), \(.*\...\), \(.*\...\).*/\1/" -e "s/ //g"`
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tmp=$(echo $load*100 | bc)
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load100=${tmp%.*}
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if [ ${load100} -gt 50 ] ; then
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echo -n $load
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else
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echo -n ""
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fi
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load=$(awk '{print $1}' /proc/loadavg)
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echo -n "$load"
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}
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# Compute a gradient of background/forground colors depending on the battery status
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load_color()
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__load_color()
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{
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gray=0
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red=1
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green=2
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yellow=3
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blue=4
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magenta=5
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cyan=6
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white=7
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# Colour progression is important ...
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# bold gray -> bold green -> bold yellow -> bold red ->
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# black on red -> bold white on red
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#
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# Then we have to choose the values at which the colours switch, with
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# anything past yellow being pretty important.
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# Colour progression is important ...
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# bold gray -> bold green -> bold yellow -> bold red ->
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# black on red -> bold white on red
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#
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# Then we have to choose the values at which the colours switch, with
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# anything past yellow being pretty important.
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loadval=$(__load)
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load=$(echo $loadval | sed -E 's/(^0| .*|\.)//g;s/^0*//g' )
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if [ -z "$load" ]; then
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load=0
|
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fi
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let "load=$load/$__CPUNUM"
|
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|
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load=$(load_out)
|
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if [ "$load" != "" ] ; then
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tmp=$(echo $load*100 | bc)
|
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load100=${tmp%.*}
|
||||
|
||||
if [ ${load100} -lt 70 ] ; then
|
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tput bold ; tput setaf ${gray}
|
||||
elif [ ${load100} -ge 70 ] && [ ${load100} -lt 120 ] ; then
|
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tput bold ; tput setaf ${green}
|
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elif [ ${load100} -ge 120 ] && [ ${load100} -lt 200 ] ; then
|
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tput bold ; tput setaf ${yellow}
|
||||
elif [ ${load100} -ge 200 ] && [ ${load100} -lt 300 ] ; then
|
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tput bold ; tput setaf ${red}
|
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elif [ ${load100} -ge 300 ] && [ ${load100} -lt 500 ] ; then
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tput setaf ${gray} ; tput setab ${red}
|
||||
else
|
||||
tput bold ; tput setaf ${white} ; tput setab ${red}
|
||||
fi
|
||||
fi
|
||||
if [ "$load" -ge "60" ]
|
||||
then
|
||||
ret="${NO_COL}["
|
||||
if [ $load -lt 70 ] ; then
|
||||
ret="${ret}${LIGHT_GREY}"
|
||||
elif [ $load -ge 1 ] && [ $load -lt 80 ] ; then
|
||||
ret="${ret}${LIGHT_GREEN}"
|
||||
elif [ $load -ge 80 ] && [ $load -lt 95 ] ; then
|
||||
ret="${ret}${LIGHT_YELLOW}"
|
||||
elif [ $load -ge 95 ] && [ $load -lt 150 ] ; then
|
||||
ret="${ret}${LIGHT_RED}"
|
||||
elif [ $load -ge 150 ] && [ $load -lt 200 ] ; then
|
||||
ret="${ret}${WARN_RED}"
|
||||
else
|
||||
ret="${ret}${CRIT_RED}"
|
||||
fi
|
||||
ret="${ret}cpu=$load%${NO_COL}]"
|
||||
echo -ne "${ret}"
|
||||
fi
|
||||
}
|
||||
|
||||
__smart_prompt()
|
||||
{
|
||||
if [ "$EUID" -ne "0" ]
|
||||
then
|
||||
git log -1 >/dev/null 2>&1
|
||||
if [ "$?" -eq "0" ]
|
||||
then
|
||||
echo -n '±'
|
||||
else
|
||||
echo -n '$'
|
||||
fi
|
||||
else
|
||||
echo -n '#'
|
||||
fi
|
||||
}
|
||||
|
||||
__return_value()
|
||||
{
|
||||
if [ "$1" -ne "0" ]
|
||||
then
|
||||
echo -ne "${NO_COL}[${PURPLE}\\\$?=$1${NO_COL}]"
|
||||
fi
|
||||
}
|
||||
|
||||
__set_bash_prompt()
|
||||
{
|
||||
__RETURN="`__return_value $?`"
|
||||
__LOAD="`__load_color`"
|
||||
__JOBS="`__jobcount_color`"
|
||||
__BATT="`__battery_color`"
|
||||
__GIT="`__git_branch_color`"
|
||||
__PROMPT="`__smart_prompt`"
|
||||
PS1="${__BATT}${__LOAD}${__JOBS}"
|
||||
if [ "$EUID" -ne "0" ]
|
||||
then
|
||||
PS1="${PS1}${LIGHT_GREEN}\u@\h${NO_COL}:${LIGHT_BLUE}\w${NO_COL}"
|
||||
PS1="${PS1}${__GIT}"
|
||||
else
|
||||
PS1="${PS1}${LIGHT_RED}\u@\h${NO_COL}:${LIGHT_BLUE}\w${NO_COL}"
|
||||
fi
|
||||
PS1="${PS1}${__RETURN}${__PROMPT} "
|
||||
|
||||
# Glue the bash prompt always go to the first column .
|
||||
# Avoid glitches after interrupting a command with Ctrl-C
|
||||
PS1="\[\033[G\]${PS1}${NO_COL}"
|
||||
}
|
||||
########################
|
||||
# Construct the prompt #
|
||||
########################
|
||||
|
||||
# different colors depending on connexion type and user
|
||||
if [ $CONN = lcl -a $USR = nou_root ] ; then
|
||||
PS1="${WHITE}[\u \w]${NO_COL}"
|
||||
elif [ $CONN = lcl -a $USR = u_root ] ; then
|
||||
PS1="${YELLOW}[\w]${NO_COL}" # no user name if we are local root
|
||||
elif [ $CONN = tel -a $USR = nou_root ] ; then
|
||||
PS1="[\u${LIGHT_GREEN}@\h${NO_COL} \w]${NO_COL}"
|
||||
elif [ $CONN = tel -a $USR = u_root ] ; then
|
||||
PS1="${RED}[\u @${YELLOW}\h${RED} \w]${NO_COL}"
|
||||
elif [ $CONN = ssh -a $USR = nou_root ] ; then
|
||||
PS1="[\u @${LIGHT_BLUE}\h${NO_COL} \w]${NO_COL}"
|
||||
elif [ $CONN = ssh -a $USR = u_root ] ; then
|
||||
PS1="${RED}[\u @${LIGHT_BLUE}\h${RED} \w]${NO_COL}"
|
||||
fi
|
||||
|
||||
# add job count
|
||||
PS1="$PS1${LIGHT_BLUE}\$(jobcount)${NO_COL}"
|
||||
|
||||
if [ $USR = nou_root ] ; then
|
||||
# add git branch and status
|
||||
PS1="$PS1 \$(git_branch_color)\$(git_branch)${NO_COL}"
|
||||
fi
|
||||
|
||||
# add prompt mark
|
||||
if [ $USR = nou_root ] ; then
|
||||
PS1="$PS1${WHITE}\\$ ${NO_COL}"
|
||||
elif [ $USR = u_root ] ; then
|
||||
PS1="$PS1${RED}\\$ ${NO_COL}"
|
||||
fi
|
||||
|
||||
# add battery status
|
||||
PS1="\[\$(battery_color)\]\$(battery) ${NO_COL}$PS1"
|
||||
|
||||
# add colored load average
|
||||
PS1="\[\$(load_color)\]\$(load_out)${NO_COL}$PS1"
|
||||
|
||||
# Glue the bash prompt always go to the first column .
|
||||
# Avoid glitches after interrupting a command with Ctrl-C
|
||||
PS1="\[\033[G\]$PS1"
|
||||
PROMPT_COMMAND=__set_bash_prompt
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user