dotfiles/bash/.bash_prompt
Akemi Izuko f6881cea7a
Init again
The dotfiles are back
2022-09-06 23:34:19 -06:00

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#!/usr/bin/env bash
export PS1
function print_help () {
local invoke_name='change_bash_prompt'
cat << EOF
Change the current bash prompt
USAGE: $invoke_name [--help] [color-mode] [components ...]
[-h|--help] Show this message
host | hostname Hostname of system
tty Terminal's name
pwd | dir Present working directory
user Username
git Git branch
space | tab 4 white space characters
exit | code Last non-zero exit code
EXAMPLES:
$invoke_name # Reset prompt
$invoke_name tty pwd git exit # Default prompt
$invoke_name tab tab user exit # Very minimal
EOF
}
# Select color mode =================================================
function is_default_prompt () {
[[ "$#" -eq 0 ]]
}
function exit_code () {
local code="$?"
if [[ "$code" != "0" ]]; then
printf " [%d]" "$code"
fi
}
function change_bash_prompt () {
# Set colors ======================================================
local purple='\[\033[0;35;1m\]'
local yellow='\[\033[0;33;1m\]'
local red='\[\033[0;31;1m\]'
# Prompt components ===============================================
local hostname="${purple}"'[\h]'
local tty="${purple}$(tty | cut -c6-12)"
local cwd="${yellow}"'\W'
local user="${red}"'\u'
local git="${user}"
local exit="${red}"'$(exit_code)'
local prompt_end='\[\e[m\]\$ ' # Trailing nbsp (u00A0) for tmux reverse search
if [ -f ~/.git-prompt.bash ]; then
local git="${red}"'$(__git_ps1 "(%s)")'
fi
local prompt=''
[[ "$IS_VIFM_NEST" != 'T' ]] || prompt+="<VIFM>" # Alert when nested in vifm
# Default prompts =================================================
if is_default_prompt "$@"; then
if [[ -n $SSH_TTY ]] || [[ -n $SSH_CLIENT ]] || [[ -n $SSH_CONNECTION ]]; then
prompt+="${hostname}:${cwd} ${git}${exit}"
else
prompt+="${tty}:${cwd} ${git}${exit}"
fi
fi
# Build customized prompts ========================================
local seperator=':'
for opt in "$@"; do
case "$opt" in
host | hostname) prompt+="$hostname" ;;
tty) prompt+="$tty" ;;
cwd | pwd | dir) prompt+="$cwd" ;;
user) prompt+="$user" ;;
exit | code) prompt+="$exit" ;;
git)
prompt+="$git"
seperator=''
;;
space | tab)
prompt+=" "
seperator=''
;;
-h | --help)
print_help "$@"
return 0
;;
*)
printf 'Unrecognized option `%s`\n' "$opt"
printf 'Rerun with --help for more information\n'
return 1
;;
esac
prompt+="$seperator"
seperator=' '
done
PS1="${prompt}${prompt_end}"
}
change_bash_prompt "$@"
# vim: set ft=bash ff=unix: