dotfiles/.config/fish/functions/fish_prompt.fish

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function fish_prompt --description 'Write out the prompt'
set -l last_status $status
set -l color_cwd
set -l suffix
set -l user_prefix
set -l git_branch
set -l go_version
set -l docker_version
set -l node_version
set -l ex_version
set -l dart_version
set -l flutter_version
set -l jobs_num
set -l exit_code
# Set exit code, based on last command status
if test $last_status -ne 0
set exit_code '<' (set_color $fish_color_status) $last_status (set_color normal) '> '
end
# Set jobs num, based on exit code of jobs command
if jobs > /dev/null
set -l jobs_out (jobs -c)
set jobs_num '[' (set_color brblack) (count $jobs_out) (set_color normal) '] '
end
# Set cwd color and prompt suffix, based on current user and fish_bind_mode.
switch "$USER"
case root toor
if set -q fish_color_cwd_root
set color_cwd $fish_color_cwd_root
else
set color_cwd $fish_color_cwd
end
set suffix '#~>'
if test $fish_key_bindings = 'fish_vi_key_bindings'
switch "$fish_bind_mode"
case 'insert'
set suffix (set_color brblue) $suffix (set_color normal)
case 'default'
set suffix '###'
case 'visual'
set suffix (set_color bryellow) '<~#' (set_color normal)
end
end
case '*'
set color_cwd $fish_color_cwd
set suffix '~~>'
if test $fish_key_bindings = 'fish_vi_key_bindings'
switch "$fish_bind_mode"
case 'insert'
set suffix (set_color brblue) $suffix (set_color normal)
case 'default'
set suffix '<~>'
case 'visual'
set suffix (set_color bryellow) '<~~' (set_color normal)
end
end
end
# Set user_prefix, based on whether or not inside of ssh session.
if test -n "$SSH_CLIENT"; set user_prefix $USER @ (prompt_hostname) ' '; end
# Show current git branch, based on git commands only.
if git branch --show-current > /dev/null 2> /dev/null
set -l branch_color green
set -l git_status (git status)
if string match 'Changes not staged for commit:' $git_status > /dev/null
or string match 'Untracked files:' $git_status > /dev/null
set branch_color red
else if string match 'Changes to be committed:' $git_status > /dev/null
set branch_color yellow
end
set -l cur_branch (git branch --show-current)
if test -z $cur_branch; set cur_branch 'detached'; end
set -l cur_branch_len (string length $cur_branch)
if test $cur_branch_len -gt 21
set -l sub_str (string sub -s (math $cur_branch_len - 17) -l 18 $cur_branch)
set cur_branch "...$sub_str"
end
if string match 'Your branch is ahead of*' $git_status > /dev/null
set cur_branch $cur_branch \u21A5
else if string match 'Your branch is behind*' $git_status > /dev/null
set cur_branch $cur_branch \u21A7
end
set git_branch ' on ' (set_color $branch_color) $cur_branch (set_color normal)
end
# Set go version, by existence of go mod or dep files
if test -e ./go.mod; or test -e ./Gopkg.toml
set -l version_str (string match -r 'go\d+\.\d+\.?\d*' (go version))
set go_version ' with ' (set_color 8eadaf) $version_str (set_color normal)
end
# Set docker version, by existence of Dockerfile
if test -e ./Dockerfile
set -l version_str (string match -r '\d+\.\d+\.?\d*' (docker --version))
set docker_version ' on ' (set_color blue) 'docker' $version_str (set_color normal)
end
# Set user prefix, based on docker machine name
if test -n "$DOCKER_MACHINE_NAME"
set user_prefix (set_color blue) $DOCKER_MACHINE_NAME (set_color normal) ' '
end
# Set node (and ts) version, based on existance of package.json (and tsconfig.json)
if test -e ./package.json
set -l version_str (string sub -s 2 (node -v))
set node_version ' with ' (set_color brgreen) 'node' $version_str (set_color normal)
if test -e ./tsconfig.json
set -l version_str (string match -r '\d+\.\d+\.?\d*' (tsc -v))
set node_version $node_version ' and ' (set_color cyan) 'ts' $version_str (set_color normal)
end
end
# Set elixir version, based on existance of mix.exs
if test -e ./mix.exs
set -l version_str (string sub -s 8 (string match -r 'Elixir \d+\.\d+\.?\d*' (elixir -v)))
set ex_version ' with ' (set_color magenta) 'ex' $version_str (set_color normal)
end
# Set dart version, based on existances of pubspec.yaml
if test -e ./pubspec.yaml
set -l version_str (string match -r '\d+\.\d+\.?\d*' (dart --version 2>| cat))
set dart_version ' with ' (set_color brblue) 'dart' $version_str (set_color normal)
if cat pubspec.yaml | grep flutter > /dev/null
set -l version_str (string sub -s 9 (string match -r 'Flutter \d+\.\d+\.?\d*' (flutter --version)))
set flutter_version ' on ' (set_color blue) 'flutter' $version_str (set_color normal)
end
end
# Combine all prompt variables
set -l cwd (set_color $color_cwd) (prompt_pwd) (set_color normal)
set -l top_prompt $cwd $git_branch $go_version $ex_version $node_version $dart_version $flutter_version $docker_version
set -l bottom_prompt $user_prefix $jobs_num $exit_code $suffix ' '
# Decide whether to insert newline, based on whether the top prompt is only equal to cwd
if test "$top_prompt" = "$cwd"
set bottom_prompt ' ' $bottom_prompt
else
set bottom_prompt \n $bottom_prompt
end
echo -n -s $top_prompt
echo -n -s $bottom_prompt
end