nixos-config/user/fish/fish_prompt.fish

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#{{@@ header() @@}}
# __ _ _
# / _(_)___| |__
# | |_| / __| '_ \
# | _| \__ \ | | |
# |_| |_|___/_| |_|
# Fine, I'll do it myself
function fish_vi_cursor;end
function fish_mode_prompt;end
############################################################
# Color helpers
############################################################
function _fish_prompt_color -a color
# separate line needed for bold normal
set_color $color
set_color --bold
set -e argv[1]
echo -en $argv
end
alias _fish_prompt_warn "_fish_prompt_color 'yellow'"
alias _fish_prompt_normal "_fish_prompt_color 'normal'"
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alias _fish_prompt_accent "_fish_prompt_color '$__accent_color'"
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############################################################
# Git
############################################################
function _fish_prompt_git_status -a git_status_s code symbol color
echo $git_status_s | string match -qr "^$code"
and _fish_prompt_color "$color" "$symbol"
end
function _fish_prompt_git_detached
git symbolic-ref -q HEAD &> /dev/null
or git show --oneline -s |
string match -r '^\w+'
end
function _fish_prompt_git_remote_branches
git for-each-ref --format='%(refname:short)' refs/remotes
end
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function _fish_prompt_git_unpushed_branches
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timeout 5s git log \
--branches \
--simplify-by-decoration \
--not \
--remotes \
--no-walk \
--oneline \
--decorate \
--pretty=format:%D |
string replace 'HEAD -> ' '' |
string split ', '
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end
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function fish_git_prompt
command -qs git
or return
set -l here (string replace -r '/\.git(/.*)?$' '' "$PWD")
test -d "$here"
or return
pushd "$here"
############################################################
# Check if in a git repo and save branch and status
############################################################
set -l git_branch (git branch --show-current 2> /dev/null);or return
set -l git_detach (_fish_prompt_git_detached)
set -l git_remote_branch (git rev-parse --abbrev-ref (git branch --show-current)@{u} 2> /dev/null)
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set -l git_status_s (timeout 5s git status -s | string collect)
set -l git_log_unpushed (_fish_prompt_git_unpushed_branches)
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_fish_prompt_normal " on "
############################################################
# Left side represents Index/Filesystem
############################################################
_fish_prompt_git_status "$git_status_s" '.M' '~' 'yellow' # Modified
_fish_prompt_git_status "$git_status_s" '.D' '-' 'red' # Deleted
_fish_prompt_git_status "$git_status_s" '\?\?' '?' 'normal' # Untraked files exist
_fish_prompt_git_status "$git_status_s" 'UU' '!' 'yellow' # Unmerged files exist
# Print name of branch or checkedout commit
if test -n "$git_detach"
_fish_prompt_warn "$git_detach"
else if test -n "$git_branch"
_fish_prompt_accent "$git_branch"
else
_fish_prompt_warn "init"
end
git rev-parse HEAD -- &>/dev/null
or return
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# print a "↑" if ahead of origin
test 0 -ne (git log --oneline "$git_remote_branch"..HEAD -- | wc -l)
and set -f _git_sync_ahead '↑'
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# print a "↓" if behind of origin
test 0 -lt (git log --oneline HEAD.."$git_remote_branch" -- | wc -l)
and set -l _git_sync_behind '↓'
if set -q _git_sync_ahead _git_sync_behind
_fish_prompt_normal '⇅'
else if set -q _git_sync_ahead
_fish_prompt_normal '↑'
else if set -q _git_sync_behind
_fish_prompt_normal '↓'
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end
if test -n "$git_log_unpushed"
and not string match -qr "$git_branch" "$git_log_unpushed"
_fish_prompt_normal '↻'
_fish_prompt_warn $git_log_unpushed[1]
end
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############################################################
# Right side represents WorkTree/Staged
############################################################
_fish_prompt_git_status "$git_status_s" 'A.' '+' 'green' # New file
_fish_prompt_git_status "$git_status_s" 'M.' '~' 'green' # Modified
_fish_prompt_git_status "$git_status_s" 'R.' '→' 'yellow' # Moved
_fish_prompt_git_status "$git_status_s" 'D.' '-' 'red' # Deletion staged
popd
end
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############################################################
# Program time indicator
############################################################
function __fish_prompt_set_last_command_start --on-event fish_preexec
set -g __fish_prompt_last_command_start (date +%s.%N)
end
function __fish_prompt_set_last_command_end --on-event fish_postexec
set -g __fish_prompt_last_command_end (date +%s.%N)
end
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function fish_program_time_prompt_print -a diff
set -l diff (math "round ($diff * 100) / 100")
set -l unit secs
if test $diff -gt 60
set unit "mins"
set diff (math $diff / 60)
end
if test $diff -gt 60
set unit "hours"
set diff (math $diff / 60)
end
if test "$diff" -gt 1
_fish_prompt_normal " took "
_fish_prompt_warn (
# force formatting as 0.1 instead of 0,1
env LC_ALL=C printf "%.02f" "$diff"
)
_fish_prompt_normal $unit
end
end
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function fish_program_time_prompt
if test -z "$__fish_prompt_last_command_start"
or test -z "$__fish_prompt_last_command_end"
return
end
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set -l difference (math $__fish_prompt_last_command_end - $__fish_prompt_last_command_start)
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fish_program_time_prompt_print $difference
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set -eg __fish_prompt_last_command_start
set -eg __fish_prompt_last_command_end
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end
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############################################################
# Vi mode indicator
############################################################
function fish_vimode_prompt # Not fish_mode_prompt!
if not test $fish_key_bindings = fish_vi_key_bindings
printf '\e[5 q' # Bar
return
end
# Set cursor shape
if test $fish_bind_mode = insert
printf '\e[5 q' # Bar
else
printf '\e[1 q' # Block
end
# Print mode symbol, N for normal, I for insert, etc...
# on most cases first letter of mode name
_fish_prompt_accent (
switch $fish_bind_mode
case replace_one
printf 'o'
case default
printf 'n'
case '*'
printf (string match -r '^.' $fish_bind_mode )
end | string upper
)' '
end
############################################################
# Main prompt
############################################################
function fish_prompt
# Save current status as it may be overwritten before usage
set _status $status
_fish_prompt_accent $USER
_fish_prompt_normal " in "
_fish_prompt_accent (prompt_pwd)
if test -n "$SSH_TTY"
_fish_prompt_normal " at "
_fish_prompt_accent "$hostname"
end
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if test -n "$IN_NIX_SHELL"
_fish_prompt_normal " with "
_fish_prompt_accent "nix"
end
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fish_git_prompt
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fish_program_time_prompt
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# Line break
echo
fish_vimode_prompt
if test $_status -ne 0
_fish_prompt_warn "$_status "
end
if test $USER = root
_fish_prompt_normal '# '
else
_fish_prompt_normal '$ '
end
# Reset colors
set_color normal
end
# These don't seem to work
# set fish_cursor_default block blink
# set fish_cursor_insert line blink
# set fish_cursor_replace_one underscore blink
# set fish_cursor_visual block