ohmyzsh/themes/blecher.at-agnoster.zsh-theme
2014-07-28 14:46:11 +02:00

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# vim:ft=zsh ts=2 sw=2 sts=2
# blecher.at Theme - sped up git support and fixed status, based on
#
# agnoster's Theme - https://gist.github.com/3712874
# A Powerline-inspired theme for ZSH
#
# # README
#
# In order for this theme to render correctly, you will need a
# [Powerline-patched font](https://github.com/Lokaltog/powerline-fonts).
#
# In addition, I recommend the
# [Solarized theme](https://github.com/altercation/solarized/) and, if you're
# using it on Mac OS X, [iTerm 2](http://www.iterm2.com/) over Terminal.app -
# it has significantly better color fidelity.
#
# # 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'
SEGMENT_SEPARATOR=''
# 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 != $CURRENT_BG ]]; then
echo -n " %{$bg%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR%{$fg%} "
else
echo -n "%{$bg%}%{$fg%}"
fi
CURRENT_BG=$1
[[ -n $3 ]] && echo -n $3
}
# End the prompt, closing any open segments
prompt_end() {
if [[ -n $CURRENT_BG ]]; then
echo -n " %{%k%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR"
else
echo -n "%{%k%}"
fi
echo -n "%{%f%}"
CURRENT_BG=''
}
### Prompt components
# Each component will draw itself, and hide itself if no information needs to be shown
# Context: user@hostname (who am I and where am I)
prompt_context() {
local user=`whoami`
if [[ "$user" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then
prompt_segment black default "%(!.%{%F{yellow}%}.)$user@%m"
fi
}
# Git: branch/detached head, dirty status
prompt_git() {
local ref dirty mode repo_path
repo_path=$(git rev-parse --git-dir 2>/dev/null)
gitbranch;
if [[ "$GITBRANCH" != "" ]]; then
prompt_segment green black
echo -n "${GITBRANCH}"
fi
}
# Dir: current working directory
prompt_dir() {
prompt_segment blue black '%~'
}
# Fast method to get the current branch in git from https://gist.github.com/wolever/6525437
gitbranch() {
export GITBRANCH=""
local repo="${_GITBRANCH_LAST_REPO-}"
local gitdir=""
[[ ! -z "$repo" ]] && gitdir="$repo/.git"
# If we don't have a last seen git repo, or we are in a different directory
if [[ -z "$repo" || "$PWD" != "$repo"* || ! -e "$gitdir" ]]; then
local cur="$PWD"
while [[ ! -z "$cur" ]]; do
if [[ -e "$cur/.git" ]]; then
repo="$cur"
gitdir="$cur/.git"
break
fi
cur="${cur%/*}"
done
fi
if [[ -z "$gitdir" ]]; then
unset _GITBRANCH_LAST_REPO
return 0
fi
export _GITBRANCH_LAST_REPO="${repo}"
local head=""
local branch=""
read head < "$gitdir/HEAD"
case "$head" in
ref:*)
branch="${head##*/}"
;;
"")
branch=""
;;
*)
branch="d:${head:0:7}"
;;
esac
if [[ -z "$branch" ]]; then
return 0
fi
export GITBRANCH="$branch"
}
# Status:
# - was there an error
# - am I root
# - are there background jobs?
prompt_status() {
local symbols
symbols=()
[[ $RETVAL -ne 0 ]] && symbols+="%{%F{red}%}✘ " || symbols+=" "
[[ -n "$symbols" ]] && prompt_segment black default "$symbols"
}
## Main prompt
build_prompt() {
RETVAL=$?
prompt_status
prompt_context
prompt_git
prompt_dir
prompt_end
}
PROMPT='%{%f%b%k%}$(build_prompt) '