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zimfw/modules/prompt/themes/eriner.zsh-theme
Eric Nielsen 7b70cffc0e [prompt] eriner: Simplify help message and use PS1
and `RPS1`, instead of `PROMPT` and `RPROMPT`, as suggested by the zsh
manual at `man zshcontrib`, under "Writing Themes":

> By convention, themes use `PS1`, `PS2`, `RPS1`, etc., rather than the
longer `PROMPT` and `RPROMPT`.
2018-01-08 12:22:35 -05:00

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# vim:et sts=2 sw=2 ft=zsh
#
# Eriner's Theme - fork of agnoster
# A Powerline-inspired theme for ZSH
#
# In order for this theme to render correctly, a font with Powerline symbols is
# required. A simple way to install a font with Powerline symbols is to follow
# the instructions here: https://github.com/powerline/fonts#installation
#
# The aim of this theme is to only show you *relevant* information. Like most
# prompts, it will only show git information when in a git working directory.
# However, it goes a step further: everything from the current user and
# hostname to whether the last call exited with an error to whether background
# jobs are running in this shell will all be displayed automatically when
# appropriate.
#
# Requires the `git-info` zmodule to be included in the .zimrc file.
prompt_eriner_help () {
cat <<EOH
This prompt is color-scheme-able. You can customize it using:
prompt eriner [status_color] [pwd_color] [git_clean_color] [git_dirty_color]
where the parameters are the background colors for each segment. The default
values are black, cyan, green, and yellow.
In order for this prompt to render correctly, a font with Powerline symbols is
required. A simple way to install a font with Powerline symbols is to follow
the instructions here: https://github.com/powerline/fonts#installation
EOH
}
prompt_eriner_main() {
local prompt_eriner_retval=${?}
local prompt_eriner_color1=${1:-black}
local prompt_eriner_color2=${2:-cyan}
### Segment drawing
# Utility functions to make it easy and re-usable to draw segmented prompts.
local prompt_eriner_bg
# Begin a segment. Takes two arguments, background color and contents of the
# new segment.
prompt_eriner_segment() {
print -n "%K{${1}}"
[[ -n ${prompt_eriner_bg} ]] && print -n "%F{${prompt_eriner_bg}}"
print -n "${2}"
prompt_eriner_bg=${1}
}
prompt_eriner_standout_segment() {
print -n "%S%F{${1}}"
[[ -n ${prompt_eriner_bg} ]] && print -n "%K{${prompt_eriner_bg}}%k"
print -n "${2}%s"
prompt_eriner_bg=${1}
}
# End the prompt, closing last segment.
prompt_eriner_end() {
print -n "%k%F{${prompt_eriner_bg}}%f "
}
### Prompt components
# Each component will draw itself, or hide itself if no information needs to
# be shown.
# Status: Was there an error? Am I root? Are there background jobs? Ranger
# spawned shell? Who and where am I (user@hostname)?
prompt_eriner_status() {
local segment=''
(( prompt_eriner_retval )) && segment+=' %F{red}✘'
(( UID == 0 )) && segment+=' %F{yellow}⚡'
(( $(jobs -l | wc -l) )) && segment+=' %F{cyan}⚙'
(( RANGER_LEVEL )) && segment+=' %F{cyan}r'
if [[ ${USER} != ${DEFAULT_USER} || -n ${SSH_CLIENT} ]]; then
segment+=' %F{%(!.yellow.default)}${USER}@%m'
fi
if [[ -n ${segment} ]]; then
prompt_eriner_segment ${prompt_eriner_color1} "${segment} "
fi
}
# Pwd: current working directory.
prompt_eriner_pwd() {
prompt_eriner_standout_segment ${prompt_eriner_color2} " $(short_pwd) "
}
# Git: branch/detached head, dirty status.
prompt_eriner_git() {
if [[ -n ${git_info} ]]; then
local indicator
[[ ${git_info[color]} == yellow ]] && indicator='± '
prompt_eriner_standout_segment ${git_info[color]} " \${(e)git_info[prompt]} ${indicator}"
fi
}
prompt_eriner_status
prompt_eriner_pwd
prompt_eriner_git
prompt_eriner_end
}
prompt_eriner_precmd() {
(( ${+functions[git-info]} )) && git-info
}
prompt_eriner_setup() {
autoload -Uz colors && colors
autoload -Uz add-zsh-hook
prompt_opts=(cr percent sp subst)
add-zsh-hook precmd prompt_eriner_precmd
local prompt_eriner_color3=${3:-green}
local prompt_eriner_color4=${4:-yellow}
zstyle ':zim:git-info:branch' format ' %b'
zstyle ':zim:git-info:commit' format '➦ %c'
zstyle ':zim:git-info:action' format ' (%s)'
zstyle ':zim:git-info:clean' format ${prompt_eriner_color3}
zstyle ':zim:git-info:dirty' format ${prompt_eriner_color4}
zstyle ':zim:git-info:keys' format \
'prompt' '%b%c%s' \
'color' '%C%D'
PS1="\${(e)\$(prompt_eriner_main ${@:1:2})}"
RPS1=''
}
prompt_eriner_preview () {
if (( $# )); then
prompt_preview_theme eriner "${@}"
else
prompt_preview_theme eriner
print
prompt_preview_theme eriner black blue green yellow
fi
}
prompt_eriner_setup "${@}"