dotfiles/home/.config/shell/prompt

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#!/usr/bin/env zsh
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# Configuration variables:
# Once we are too deep in the filestructure, we can usually afford to shorten
# the whole working directory and only print something like ~/.../dir3/dir4/dir5
# instead of ~/dir1/dir2/dir3/dir4/dir5. If this isn't desired, set this to 0
USE_SHORTENED_WORKDIR=1
# Show how much time it took to run a command
SHOW_CMD_TIME=1
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# hide EOL sign ('%')
export PROMPT_EOL_MARK=""
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# TTY (pure linux) terminal only has 8-bit color support
# (unless you change it in kernel), respect this and downgrade
# the color scheme accordingly (it won't look best, but it's
# still better than no colors)
if [ $TERM = "linux" ]; then
GREEN="%F{002}"
RED="%F{001}"
ORANGE="%F{003}"
BLUE="%F{004}"
LBLUE="%F{006}"
PURPLE="%F{005}"
else
GREEN="%F{047}"
RED="%F{196}"
ORANGE="%F{214}"
BLUE="%F{027}"
LBLUE="%F{075}"
PURPLE="%F{105}"
fi
RESET="%f"
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# Signals git status of CWD repository (if any)
git_prompt() {
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ref=$(command git symbolic-ref HEAD 2> /dev/null) || ref=$(command git rev-parse --short HEAD 2> /dev/null) || return 0
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echo -n " $ORANGE${ref#refs/heads/}"
if [ ! -z "$(git status --short)" ]; then
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echo "$RED+"
fi
}
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# Adds @chroot or @ssh
foreign_prompt() {
if [ "$(awk '$5=="/" {print $1}' </proc/1/mountinfo)" != "$(awk '$5=="/" {print $1}' </proc/$$/mountinfo)" ]; then
echo -n "@${ORANGE}chroot"
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elif [ -n "$SSH_CLIENT" ] || [ -n "$SSH_TTY" ]; then
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echo -n "@${ORANGE}ssh"
fi
}
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# Prints appropriate working directory
working_directory() {
# By default up to 5 directories will be tolerated before shortening
# After we surpass that, first directory (or ~) will be printed together with last 3
# This feature uses special symbol '…', but this isn't aviable when in TTY. Because
# of this, when we are in TTY, we fall back to longer '...'
if [ $USE_SHORTENED_WORKDIR != 1 ]; then
echo -n " $BLUE$~"
elif [ $TERM = "linux" ]; then
echo -n " $BLUE%(5~|%-1~/.../%3~|%4~)"
else
echo -n " $BLUE%(5~|%-1~/…/%3~|%4~)"
fi
}
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# Execution time tracking hooks, this is unique to zsh, as it can add
# preexec and precmd hooks. We can utilize this to keep track of the
# amount of time it took to run certain command. We store the start time
# within a variable: PROMPT_EXEC_TIME_START, which we then compare and
# unset after the command was finished. In here, we simply set the
# PROMPT_EXEC_TIME_DURATION, which is then used in the actual prompt
# This will only be enabled if SHOW_CMD_TIME is 1.
exec_time_preexec_hook() {
[[ $SHOW_CMD_TIME == 0 ]] && return
PROMPT_EXEC_TIME_START=$(date +%s)
}
exec_time_precmd_hook() {
[[ $SHOW_CMD_TIME == 0 ]] && return
[[ -z $PROMPT_EXEC_TIME_START ]] && return
local PROMPT_EXEC_TIME_STOP=$(date +%s)
PROMPT_EXEC_TIME_DURATION=$(( $PROMPT_EXEC_TIME_STOP - $PROMPT_EXEC_TIME_START ))
unset PROMPT_EXEC_TIME_START
}
format_time() {
# Do some formatting to get nice time (e.g. 2m 12s)
# from seconds only
local T=$1
local D=$((T/60/60/24))
local H=$((T/60/60%24))
local M=$((T/60%60))
local S=$((T%60))
[[ $D > 0 ]] && printf '%dd ' $D
[[ $H > 0 ]] && printf '%dh ' $H
[[ $M > 0 ]] && printf '%dm ' $M
printf '%ds' $S
}
display_cmd_time() {
[[ $SHOW_CMD_TIME == 0 ]] && return
[[ -z $PROMPT_EXEC_TIME_DURATION ]] && return
# Don't display the time, if it's 0 seconds
[[ $PROMPT_EXEC_TIME_DURATION == 0 ]] && return
echo -n " ${LBLUE}took $(format_time $PROMPT_EXEC_TIME_DURATION)"
}
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setopt promptsubst # enable command substitution in prompt
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# Setup ZSH hooks to display the running time of commands
autoload -Uz add-zsh-hook
add-zsh-hook preexec exec_time_preexec_hook
add-zsh-hook precmd exec_time_precmd_hook
# Primary Prompt
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[ "$EUID" -eq 0 ] && PS1="$RED%n$RESET" || PS1="$GREEN%n$RESET" # user
PS1+="$(foreign_prompt)"
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PS1+="$(working_directory)"
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PS1+="\$(git_prompt)"
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#PS1+="\$(display_cmd_time)"
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PS1+=" $PURPLE%(!.#.$)$RESET " # Final symbol (# or $/»)
# Next line prompt
PS2="$RED\ $RESET"
# Right side prompt (on error)
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if [ $TERM = "linux" ]; then
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RPS1="\$(display_cmd_time)%(?..${RED}%? X$RESET)"
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else
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RPS1="\$(display_cmd_time)%(?..${RED}%? ↵$RESET)"
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fi
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