zsh agonoster theme with nix-shell
# vim:ft=zsh ts=2 sw=2 sts=2 | |
# | |
# 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). | |
# Make sure you have a recent version: the code points that Powerline | |
# uses changed in 2012, and older versions will display incorrectly, | |
# in confusing ways. | |
# | |
# 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' | |
# Special Powerline characters | |
() { | |
local LC_ALL="" LC_CTYPE="en_US.UTF-8" | |
# NOTE: This segment separator character is correct. In 2012, Powerline changed | |
# the code points they use for their special characters. This is the new code point. | |
# If this is not working for you, you probably have an old version of the | |
# Powerline-patched fonts installed. Download and install the new version. | |
# Do not submit PRs to change this unless you have reviewed the Powerline code point | |
# history and have new information. | |
# This is defined using a Unicode escape sequence so it is unambiguously readable, regardless of | |
# what font the user is viewing this source code in. Do not replace the | |
# escape sequence with a single literal character. | |
# Do not change this! Do not make it '\u2b80'; that is the old, wrong code point. | |
SEGMENT_SEPARATOR=$'\ue0b0' | |
} | |
# 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}%}$SEGMENT_SEPARATOR" | |
else | |
echo -n "%{%k%}" | |
fi | |
echo -n "%{%f%}" | |
CURRENT_BG='' | |
} | |
### Prompt components | |
# Each component will draw itself, and hide itself if no information needs to be shown | |
# Context: user@hostname (who am I and where am I) | |
prompt_context() { | |
if [[ "$USER" != "$DEFAULT_USER" || -n "$SSH_CLIENT" ]]; then | |
prompt_segment black default "%(!.%{%F{yellow}%}.)$USER" | |
fi | |
} | |
# Git: branch/detached head, dirty status | |
prompt_git() { | |
(( $+commands[git] )) || return | |
local PL_BRANCH_CHAR | |
() { | |
local LC_ALL="" LC_CTYPE="en_US.UTF-8" | |
PL_BRANCH_CHAR=$'\ue0a0' # | |
} | |
local ref dirty mode repo_path | |
repo_path=$(git rev-parse --git-dir 2>/dev/null) | |
if $(git rev-parse --is-inside-work-tree >/dev/null 2>&1); then | |
dirty=$(parse_git_dirty) | |
ref=$(git symbolic-ref HEAD 2> /dev/null) || ref="➦ $(git rev-parse --short HEAD 2> /dev/null)" | |
if [[ -n $dirty ]]; then | |
prompt_segment yellow black | |
else | |
prompt_segment green black | |
fi | |
if [[ -e "${repo_path}/BISECT_LOG" ]]; then | |
mode=" <B>" | |
elif [[ -e "${repo_path}/MERGE_HEAD" ]]; then | |
mode=" >M<" | |
elif [[ -e "${repo_path}/rebase" || -e "${repo_path}/rebase-apply" || -e "${repo_path}/rebase-merge" || -e "${repo_path}/../.dotest" ]]; then | |
mode=" >R>" | |
fi | |
setopt promptsubst | |
autoload -Uz vcs_info | |
zstyle ':vcs_info:*' enable git | |
zstyle ':vcs_info:*' get-revision true | |
zstyle ':vcs_info:*' check-for-changes true | |
zstyle ':vcs_info:*' stagedstr '✚' | |
zstyle ':vcs_info:*' unstagedstr '●' | |
zstyle ':vcs_info:*' formats ' %u%c' | |
zstyle ':vcs_info:*' actionformats ' %u%c' | |
vcs_info | |
local BRANCH_NAME="${ref/refs\/heads\/}${vcs_info_msg_0_%% }${mode}" | |
if [[ "$BRANCH_NAME" =~ ^([A-Z]+-[0-9]+) ]]; then # shorten jira slugs | |
echo -n "$PL_BRANCH_CHAR $match[1]\u2026" | |
if [[ "$BRANCH_NAME" =~ " (.+)$" ]]; then | |
echo -n " $match[1]" | |
fi | |
else | |
echo -n "$PL_BRANCH_CHAR $BRANCH_NAME" | |
fi | |
fi | |
} | |
prompt_bzr() { | |
(( $+commands[bzr] )) || return | |
if (bzr status >/dev/null 2>&1); then | |
status_mod=`bzr status | head -n1 | grep "modified" | wc -m` | |
status_all=`bzr status | head -n1 | wc -m` | |
revision=`bzr log | head -n2 | tail -n1 | sed 's/^revno: //'` | |
if [[ $status_mod -gt 0 ]] ; then | |
prompt_segment yellow black | |
echo -n "bzr@"$revision "✚ " | |
else | |
if [[ $status_all -gt 0 ]] ; then | |
prompt_segment yellow black | |
echo -n "bzr@"$revision | |
else | |
prompt_segment green black | |
echo -n "bzr@"$revision | |
fi | |
fi | |
fi | |
} | |
prompt_hg() { | |
(( $+commands[hg] )) || return | |
local rev status | |
if $(hg id >/dev/null 2>&1); then | |
if $(hg prompt >/dev/null 2>&1); then | |
if [[ $(hg prompt "{status|unknown}") = "?" ]]; then | |
# if files are not added | |
prompt_segment red white | |
st='±' | |
elif [[ -n $(hg prompt "{status|modified}") ]]; then | |
# if any modification | |
prompt_segment yellow black | |
st='±' | |
else | |
# if working copy is clean | |
prompt_segment green black | |
fi | |
echo -n $(hg prompt "☿ {rev}@{branch}") $st | |
else | |
st="" | |
rev=$(hg id -n 2>/dev/null | sed 's/[^-0-9]//g') | |
branch=$(hg id -b 2>/dev/null) | |
if `hg st | grep -q "^\?"`; then | |
prompt_segment red black | |
st='±' | |
elif `hg st | grep -q "^[MA]"`; then | |
prompt_segment yellow black | |
st='±' | |
else | |
prompt_segment green black | |
fi | |
echo -n "☿ $rev@$branch" $st | |
fi | |
fi | |
} | |
# Dir: current working directory | |
prompt_dir() { | |
if [[ -v CURRENT_PROJECT_DIR && -v CURRENT_PROJECT_NAME && $PWD =~ "^$CURRENT_PROJECT_DIR(.*)$" ]]; then | |
prompt_segment blue black "$CURRENT_PROJECT_NAME$match[1]" | |
else | |
prompt_segment blue black '%~' | |
fi | |
} | |
# Virtualenv: current working virtualenv | |
prompt_virtualenv() { | |
local virtualenv_path="$VIRTUAL_ENV" | |
if [[ -n $virtualenv_path && -n $VIRTUAL_ENV_DISABLE_PROMPT ]]; then | |
prompt_segment blue black "(`basename $virtualenv_path`)" | |
fi | |
} | |
# nix-shell: currently running nix-shell | |
prompt_nix_shell() { | |
if [[ -n "$IN_NIX_SHELL" ]]; then | |
if [[ -n $NIX_SHELL_PACKAGES ]]; then | |
local package_names="" | |
local packages=($NIX_SHELL_PACKAGES) | |
for package in $packages; do | |
package_names+=" ${package##*.}" | |
done | |
prompt_segment black yellow "{$package_names }" | |
elif [[ -n $name ]]; then | |
local cleanName=${name#interactive-} | |
cleanName=${cleanName#lorri-keep-env-hack-} | |
cleanName=${cleanName%-environment} | |
prompt_segment black yellow "{ $cleanName }" | |
else # This case is only reached if the nix-shell plugin isn't installed or failed in some way | |
prompt_segment black yellow "nix-shell {}" | |
fi | |
fi | |
} | |
# Status: | |
# - was there an error | |
# - am I root | |
# - are there background jobs? | |
prompt_status() { | |
local symbols | |
symbols=() | |
[[ $RETVAL -ne 0 && $RETVAL -ne 1 ]] && symbols+="%{%F{red}%}$RETVAL" | |
[[ $RETVAL -ne 0 ]] && symbols+="%{%F{red}%}✘" | |
[[ $UID -eq 0 ]] && symbols+="%{%F{yellow}%}⚡" | |
[[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="%{%F{cyan}%}⚙" | |
if [ ${#symbols[@]} -ne 0 ]; then | |
prompt_segment black default "$symbols" | |
fi | |
} | |
## Main prompt | |
build_prompt() { | |
RETVAL=$? | |
prompt_status | |
prompt_nix_shell | |
prompt_virtualenv | |
prompt_context | |
prompt_dir | |
prompt_git | |
prompt_bzr | |
prompt_hg | |
prompt_end | |
} | |
PROMPT='%{%f%b%k%}$(build_prompt) ' |
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