dot_bashrc

#!/usr/bin/env bash

# shellcheck enable=all

# if not interactive, exit early
[[ -z "${PS1+unset}" ]] && return
shopt -oq posix && return

# if xterm or tmux, assume 24 bit support
if [[ "${TERM}" = "xterm"* ||
	  "${TERM}" = "tmux"* ||
	  "${TERM}" = "alacritty"* ||
	  "${TERM}" = "wezterm"* ]]; then
	export COLORTERM="truecolor"
fi

# path: home, $PATH, sbin
# global is assumed to contain at least: /usr/local/bin:/usr/bin:/bin
PATH=${HOME}/bin:${HOME}/.local/bin:${PATH}:/usr/local/sbin:/usr/sbin:/sbin

# noramlize locale
LANG=en_US.UTF-8
LC_ALL=${LANG}
LC_CTYPE=${LANG}

# test phrase
export SPHINX="sphinx of black quartz judge my vow\nSPHINX OF BLACK QUARTZ JUDGE MY VOW"

# set window size
shopt -s checkwinsize

# recursive glob
shopt -s globstar 2>/dev/null

# case-insensitive glob
shopt -s nocaseglob

# append, not overwrite, history
shopt -s histappend

# save multi-line commands as single entry with embedded newlines
shopt -s cmdhist
shopt -s lithist

# force expand variable in tab complete to prevent escaping $
shopt -s direxpand

# unlimited power
HISTSIZE=9001
HISTFILESIZE=9001

# ignore deps
HISTCONTROL="erasedups:ignoreboth"

# don't record useless commands
HISTIGNORE="&:[ ]*:exit:ls:bg:fg:history:clear"

# ignore case for autocomplete
bind "set completion-ignore-case on"

# ... including - and _
bind "set completion-map-case on"

# don't require tab twice to get list
bind "set show-all-if-ambiguous on"

# treat symlinked dirs as dirs
bind "set mark-symlinked-directories on"

# colors and paren matching
bind "set blink-matching-paren on"
bind "set colored-completion-prefix on"
bind "set colored-stats on"

# add bash-completion when available
if [[ -f /usr/share/bash-completion/bash_completion ]]; then
	source /usr/share/bash-completion/bash_completion
elif [[ -f /etc/bash_completion ]]; then
	source /etc/bash_completion
fi

# add git-prompt when available
GIT_PS1_SHOWCOLORHINTS=true
GIT_PS1_SHOWDIRTYSTATE=true
GIT_PS1_SHOWSTASHSTATE=true
GIT_PS1_SHOWUNTRACKEDFILES=true
GIT_PS1_SHOWUPSTREAM=auto

if [[ -e /usr/share/git/completion/git-prompt.sh ]]; then
	# shellcheck disable=SC1091 # can't follow source
	source /usr/share/git/completion/git-prompt.sh
elif [[ -e /usr/lib/git-core/git-sh-prompt ]]; then
	source /usr/lib/git-core/git-sh-prompt
fi

# styles
RESET="$(tput sgr0)"

BOLD="$(tput bold)"
DIM="$(tput dim)"
REV="$(tput rev)"

SITM="$(tput sitm)"
RITM="$(tput ritm)"
SMUL="$(tput smul)"
RMUL="$(tput rmul)"

# colors
BLACK="$(tput setaf 0)"
RED="$(tput setaf 1)"
GREEN="$(tput setaf 2)"
YELLOW="$(tput setaf 3)"
BLUE="$(tput setaf 4)"
MAGENTA="$(tput setaf 5)"
CYAN="$(tput setaf 6)"
WHITE="$(tput setaf 7)"
HIBLACK="$(tput setaf 8)"
HIRED="$(tput setaf 9)"
HIGREEN="$(tput setaf 10)"
HIYELLOW="$(tput setaf 11)"
HIBLUE="$(tput setaf 12)"
HIMAGENTA="$(tput setaf 13)"
HICYAN="$(tput setaf 14)"
HIWHITE="$(tput setaf 15)"

export RESET BOLD DIM REV SITM RITM SMUL RMUL BLACK RED GREEN YELLOW BLUE MAGENTA CYAN WHITE HIBLACK HIRED HIGREEN HIYELLOW HIBLUE HIMAGENTA HICYAN HIWHITE

# hostname color
HOSTCHECKSUM="$(echo "${HOSTNAME}" | md5sum | tr '[:lower:]' '[:upper:]' | cut -b1-2)"
HOSTCOLOR="$((16#"${HOSTCHECKSUM}" % 16))"

if [[ "${HOSTCOLOR}" -eq 0 ]]; then
	PRO_FG="${REV}$(tput setaf "${HOSTCOLOR}")"
else
	PRO_FG="$(tput setaf "${HOSTCOLOR}")"
fi

unset HOSTCHECKSUM
unset HOSTCOLOR

# set prompt
PRO_START="[\[${RESET}${PRO_FG}\]\\h\[${RESET}\] \\W"

id="$(id -u)"
if [[ "${id}" -eq 0 ]]; then
	PRO_END="]\[${RED}\]#\[${RESET}\] "
else
	PRO_END="]\$\[${RESET}\] "
fi
unset id

precmd() {
	local git_check
	git_check="$(type -t __git_ps1)"

	if [[ "${PWD}" != "${HOME}" ]] && [[ "${git_check}" = "function" ]]; then
		__git_ps1 "${PRO_START}" "${PRO_END}"
	else
		PS1="${PRO_START}${PRO_END}"
	fi
}

PROMPT_COMMAND=precmd

# set xterm title
preexec() {
	if [[ "${BASH_COMMAND}" == "precmd" ]]; then
		COMMAND="${PWD/${HOME}/\~}"
	else
		COMMAND="${BASH_COMMAND//[^[:print:]]/}"
	fi

	printf "\e]-;%s: %s\a" "${HOSTNAME%%.*}" "${COMMAND}"

	history -a
}

trap preexec DEBUG

# load local Win config
if [[ -x "${HOME}/.bashrc.win" ]]; then
	# shellcheck disable=SC1091 # can't follow source
	source "${HOME}/.bashrc.win"
fi

# load local config
if [[ -x "${HOME}/.bashrc.local" ]]; then
	# shellcheck disable=SC1091 # can't follow source
	source "${HOME}/.bashrc.local"
fi

# aliases
alias bc="bc -ql"
alias grep="grep --color=auto"
alias ls="ls --color=auto"

# start $MANPATH
MANPATH="$(manpath -g)"
export MANPATH

# remove green background for o+w dirs; can't read blue on green
# wsl2's 9p2000 bridge doesn't filter these perms
export LS_COLORS='ow=36:'

# rust/cargo
PATH="${HOME}/.cargo/bin:${PATH}"

# nodejs/npm
export NPMPATH="${HOME}/.npm/lib/node_modules"

PATH="${HOME}/.npm/bin:${PATH}"
export MANPATH="${NPMPATH}/share/man:${MANPATH}"

# electron
export ELECTRON_OZONE_PLATFORM_HINT="wayland"

# fzf, fd, and bfs
# https://github.com/junegunn/fzf#settings
# https://github.com/tavianator/bfs/discussions/119#discussioncomment-6533106
FZF_COMPLETION_TRIGGER=""

FZF_DEFAULT_OPTS="+m -0 -1
  --bind 'tab:down,btab:up'
  --info='hidden'
  --no-bold
  --color='fg:7,bg:-1,hl:2,fg+:15,bg+:8,hl+:10,pointer:4,pointer:12,gutter:-1'
  --layout='reverse-list'
  --ansi"
FZF_CTRL_R_OPTS="--no-sort --exact --scheme=history"
FZF_CTRL_T_COMMAND="bfs -color -mindepth 1 -exclude \( -name .git \) -printf '%P\n' 2>/dev/null"
FZF_CTRL_T_OPTS="--scheme=path"
FZF_ALT_C_COMMAND="bfs -color -mindepth 1 -exclude \( -name .git \) -type d -printf '%P\n' 2>/dev/null"
FZF_ALT_C_OPTS="--scheme=path"

FZF_TMUX=1
FZF_TMUX_OPTS="-p -w 80 -h 100% -x R"

if command -v fdfind >/dev/null 2>&1; then
	alias fd="fdfind"
fi

if command -v fzf >/dev/null 2>&1; then
	if command -v bfs >/dev/null 2>&1; then
		_fzf_compgen_path() {
			bfs -H "$1" -color -exclude \( -name .git \) 2>/dev/null
		}

		_fzf_compgen_dir() {
			bfs -H "$1" -color -exclude \( -name .git \) -type d 2>/dev/null
		}
	fi

	if [[ -f "/usr/share/bash-completion/completions/fzf" ]]; then
		source /usr/share/bash-completion/completions/fzf
	fi

	if [[ -f "/usr/share/doc/fzf/examples/key-bindings.bash" ]]; then
		source /usr/share/doc/fzf/examples/key-bindings.bash
	fi
fi

# sccache
if [[ -x "${HOME}/.cargo/bin/sccache" ]]; then
	export RUSTC_WRAPPER="${HOME}/.cargo/bin/sccache"
	export CARGO_INCREMENTAL="false"

	export CC="${HOME}/.cargo/bin/sccache gcc"
	export CXX="${HOME}/.cargo/bin/sccache g++"

	export CMAKE_C_COMPILER_LAUNCHER="${HOME}/.cargo/bin/sccache"
	export CMAKE_CXX_COMPILER_LAUNCHER="${HOME}/.cargo/bin/sccache"
fi

# vim and helix
if [[ -d "${HOME}/src/lua-language-server/bin" ]]; then
	PATH="${PATH}:${HOME}/src/lua-language-server/bin"
fi

if command -v hx >/dev/null 2>&1; then
	export EDITOR=hx
	alias vim=hx
elif command -v nvim >/dev/null 2>&1; then
	export EDITOR=nvim
	alias vim=nvim
else
	export EDITOR=vim
fi

export GIT_EDITOR="${EDITOR}"