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zim/modules/prompt/functions/prompt_eriner_setup
2015-12-15 19:21:06 -05:00

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# Eriner's Theme - fork of agnoster
# A Powerline-inspired theme for ZSH
#
# # README
#
# In order for this theme to render correctly, you will need a
# [Powerline-patched font](https://gist.github.com/1595572).
#
# # Goals
#
# 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.
### Segment drawing
# A few utility functions to make it easy and re-usable to draw segmented prompts
CURRENT_BG='NONE'
PRIMARY_FG=black
# Characters
SEGMENT_SEPARATOR="\ue0b0"
PLUSMINUS="\u00b1"
BRANCH="\ue0a0"
DETACHED="\u27a6"
CROSS="\u2718"
LIGHTNING="\u26a1"
GEAR="\u2699"
# Begin a segment
# Takes two arguments, background and foreground. Both can be omitted,
# rendering default background/foreground.
prompt_segment() {
local bg fg
[[ -n ${1} ]] && bg="%K{${1}}" || bg="%k"
[[ -n ${2} ]] && fg="%F{${2}}" || fg="%f"
if [[ $CURRENT_BG != 'NONE' && ${1} != $CURRENT_BG ]]; then
print -n "%{${bg}%F{${CURRENT_BG}}%}${SEGMENT_SEPARATOR}%{${fg}%}"
else
print -n "%{${bg}%}%{${fg}%}"
fi
CURRENT_BG=${1}
[[ -n ${3} ]] && print -n ${3}
}
# End the prompt, closing any open segments
prompt_end() {
if [[ -n $CURRENT_BG ]]; then
print -n "%{%k%F{${CURRENT_BG}}%}${SEGMENT_SEPARATOR}"
else
print -n "%{%k%}"
fi
print -n "%{%f%}"
CURRENT_BG=''
}
### Prompt components
# Each component will draw itself, and hide itself if no information needs to be shown
# Context: user@hostname (who am I and where am I)
prompt_context() {
if [[ ${USERNAME} != ${DEFAULT_USER} || -n ${SSH_CONNECTION} ]]; then
prompt_segment ${PRIMARY_FG} default " %(!.%{%F{yellow}%}.)${USERNAME}@%m "
fi
}
# Git: branch/detached head, dirty status
prompt_git() {
local color ref
is_dirty() {
test -n "$(git status --porcelain --ignore-submodules)"
}
ref=${vcs_info_msg_0_}
if [[ -n ${ref} ]]; then
if is_dirty; then
color=yellow
ref="${ref} ${PLUSMINUS}"
else
color=green
ref="${ref} "
fi
if [[ "${ref/.../}" == ${ref} ]]; then
ref="${BRANCH} ${ref}"
else
ref="$DETACHED ${ref/.../}"
fi
prompt_segment ${color} ${PRIMARY_FG}
print -Pn " ${ref}"
fi
}
# Dir: current working directory
prompt_dir() {
prompt_segment cyan ${PRIMARY_FG} ' %~ '
}
# Status:
# - was there an error
# - am I root
# - are there background jobs?
prompt_status() {
local symbols
symbols=()
[[ ${RETVAL} -ne 0 ]] && symbols+="%{%F{red}%}${CROSS}"
[[ ${UID} -eq 0 ]] && symbols+="%{%F{yellow}%}${LIGHTNING}"
[[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="%{%F{cyan}%}${GEAR}"
[[ -n ${symbols} ]] && prompt_segment ${PRIMARY_FG} default " ${symbols} "
}
## Main prompt
prompt_agnoster_main() {
RETVAL=$?
CURRENT_BG='NONE'
prompt_status
prompt_context
prompt_dir
prompt_git
prompt_end
}
prompt_agnoster_precmd() {
vcs_info
PROMPT='%{%f%b%k%}$(prompt_agnoster_main) '
}
prompt_agnoster_setup() {
autoload -Uz add-zsh-hook
autoload -Uz vcs_info
prompt_opts=(cr subst percent)
add-zsh-hook precmd prompt_agnoster_precmd
zstyle ':vcs_info:*' enable git
zstyle ':vcs_info:*' check-for-changes false
zstyle ':vcs_info:git*' formats '%b'
zstyle ':vcs_info:git*' actionformats '%b (%a)'
}
prompt_agnoster_setup "$@"