dot_bashrc

# vim: set filetype=bash :

# NOTE:
# Don't use chezmoi templates for .bashrc as I want to be able to edit this
# without caveats.  Must still be generic.
# If the convenience of templates is nice, use additional files and source them
# here.
#

# Add dir to path with check that the dir exists and that it isn't in already
# in path.
# Returns 0 if the dir existed.
add_to_path() {
	if [ "$#" -eq 1 ]; then
		if [ -d "$1" ]; then
			case ":${PATH}:" in
				*":${1}:"*) ;; # already in path
				*) export PATH="${1}:${PATH}"
			esac
			return 0
		fi
	fi
	return 1
}

tmp="${HOME}/.bashrc_chezmoi_generated" 
if [ -f "$tmp" ]; then
	. "$tmp"
fi
tmp=
case "${dz_os_name,,}" in
	mac) eval `/usr/lib/path_helper -s`;;
	*);;
esac

#
# Local settings to load early (not tracked in dotfiles).
#
if [ -f "${HOME}/.bashrc_local_early" ]; then
	. "${HOME}/.bashrc_local_early"
fi

# If not running interactively, don't do anything
case $- in
	*i*) ;;
	*) return;;
esac

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth:erasedups
# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=10000
HISTFILESIZE=10000

# append to the history file, don't overwrite it
shopt -s histappend

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# When changing directory small typos can be ignored by bash
shopt -s cdspell

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
shopt -s globstar
# case-insensitive filename globbing
shopt -s nocaseglob

# make less more friendly for non-text input files, see lesspipe(1)
[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
	debian_chroot=$(cat /etc/debian_chroot)
fi

# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
	xterm-color|*-256color) color_prompt=yes;;
esac

ps1_os_name="${dz_os_name:-"${SHELL}"}" # clear that something went wrong
if [ -n "$dz_os_name" ]; then
	case "${dz_os_name,,}" in
		*mac*)    ps1_os_color="01;37" ;; # white
		*ubuntu*) ps1_os_color="01;31" ;; # red
		*arch*)   ps1_os_color="01;36" ;; # cyan
		*)        ps1_os_color="01;32" ;; # green
	esac		
fi

if [ "$color_prompt" = yes ]; then
	PS1='${debian_chroot:+($debian_chroot)}[\[\033[${ps1_os_color}m\]${ps1_os_name}\[\033[00m\]]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
	PS1='${debian_chroot:+($debian_chroot)}[${MY_OS}]:\w\$ '
fi
unset color_prompt

# If this is an xterm set the title to user@host:dir
case "$TERM" in
	xterm*|rxvt*)
		PS1="\[\e]0;${debian_chroot:+($debian_chroot)}wsl: \w\a\]$PS1"
		;;
	*)
		;;
esac

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
	test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
	alias ls='ls --color=auto'

	alias grep='grep --color=auto'
	alias fgrep='fgrep --color=auto'
	alias egrep='egrep --color=auto'
fi

# colored GCC warnings and errors
export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'

export MANPAGER="less -R --use-color -Dd+r -Du+b"

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if ! shopt -oq posix; then
	# linux
	if [ -f /usr/share/bash-completion/bash_completion ]; then
		. /usr/share/bash-completion/bash_completion
	elif [ -f /etc/bash_completion ]; then
		. /etc/bash_completion
		# Mac (intel and arm):
	elif [ -f /usr/local/etc/bash_completion ]; then
		. /usr/local/etc/bash_completion
	elif [ -f /opt/homebrew/etc/profile.d/bash_completion.sh ]; then
		. /opt/homebrew/etc/profile.d/bash_completion.sh
	fi
fi

# Use the XDG env vars.
export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-${HOME}/.config}"
[ -d "${XDG_CONFIG_HOME}" ] || mkdir -p "${XDG_CONFIG_HOME}"
export XDG_CACHE_HOME="${XDG_CACHE_HOME:-${HOME}/.cache}"
[ -d "${XDG_CACHE_HOME}" ] || mkdir -p "${XDG_CACHE_HOME}"
export XDG_DATA_HOME="${XDG_DATA_HOME:-${HOME}/.local/share}"
[ -d "${XDG_DATA_HOME}" ] || mkdir -p "${XDG_DATA_HOME}"
export XDG_STATE_HOME="${XDG_STATE_HOME:-${HOME}/.local/state}"
[ -d "${XDG_STATE_HOME}" ] || mkdir -p "${XDG_STATE_HOME}"
case "$XDG_DATA_DIRS" in
	*"$XDG_DATA_HOME"*) ;; # XDG_DATA_HOME already appended.
	*)
		export XDG_DATA_DIRS="${XDG_DATA_HOME}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
		;;
esac

# Set PATH so it includes user's private bin if it exists.
add_to_path "${HOME}/.local/bin"
add_to_path "${HOME}/.local/bin/scripts"

# Extra bin's

# Dlang: add compilers (latest installed) to PATH.
if [ -f "${HOME}/dlang/install.sh" ]; then
	for c in ldc dmd; do
		tmp="$("${HOME}/dlang/install.sh" get-path "$c" 2>/dev/null)"
		if [ "$?" -eq 0 ] && [ -n "tmp" ]; then
			PATH="$(dirname "$tmp"):${PATH}"
		fi
		tmp=
	done
fi
if command -v ldc2 >/dev/null; then
	alias ldc=ldc2
fi

# Go
# Set GOPATH for local packages in .config with:
add_to_path "/usr/local/go/bin"
# go env -w GOPATH="${XDG_DATA_HOME}/go" (only needs to be set once).
# Add go programs to PATH; where $GOPATH/bin points (set in .config/go/env).
add_to_path "${XDG_DATA_HOME}/go/bin"

# Adjust PS1 for subshells that would be easy to forget (don't show multiple
# times in nested shells).
if [ "$CHEZMOI" = "1" ]; then
	case "$PS1" in
		*"(chezmoi)"*) ;;
		*)
			PS1="(chezmoi)${PS1}";;
	esac
fi

# Indicate last command success by color.  Removes last 3 chars from
# PS1: '<PS1...> $ ' => becomes something like '<PS1...>'+'\n$ '
ps1_prompt() {
	local e=$?
	if [ "$e" -eq 0 ]; then
		printf '\033[0;32m'
	else
		printf '\033[0;31m'
	fi
	return "$e"
}
PS1="\n${PS1::-3}\n"'\[$(ps1_prompt)\]'"\$\[\033[0m\] "

#
# Helpers
#

# Necessary for gpg unlock prompt to work.
export GPG_TTY="$(tty)"

alias ls='ls -FG' # G=color, F=trailing type indicator (dir=/ exe=*, ...)
if command -v eza >/dev/null; then
	# Reminder to myself: --icons flag exists
	alias l='eza'
else
	alias l='ls'
fi
alias ll='l -l'
alias la='l -a'
alias lal='l -la'
alias lla='l -la'
alias l1='l -1'

alias less='less -R'
alias df='df -h' # human readable
alias du='du -h -d 1' # human readable, current dir only
alias hexdump='hexdump -C' # "regular" output style for manual work

if command -v nvim >/dev/null; then
	alias vim='nvim'
	alias v='nvim'
	export EDITOR='nvim'
fi
if command -v hexyl >/dev/null; then
	alias hex='hexyl'
fi
if command -v batman >/dev/null; then
	eval "$(batman --export-env)"
	alias man='batman'
elif command -v bat >/dev/null; then
	export MANPAGER='sed -u -e "s/[[0-9;]*m//g; s///g" | col -bx | bat -p -lman'
fi

if command -v chezmoi >/dev/null; then
	# Since chezmoi doesn't support command alias yet:
	# alias ch='chezmoi'
	alias ch-h='echo "ch $@ maps: s-status a-add r-re-add "'
	ch() {
		if [ $# -eq 0 ]; then
			chezmoi
			return $?
		fi
		local cmd="$1"
		shift
		case "$cmd" in
			s) cmd="status";;
			e) cmd="edit";;
			a) cmd="add";;
			r) cmd="re-add";;
			f) cmd="forget";;
			d) cmd="diff";;
			l) cmd="list";;
			m) cmd="managed";;
			p) cmd="source-path";;
			h)
				cat <<-'EOF' # for now <<- in case of gg=G
ch overwites the first arg if it's one of these: chezmoi [arg] <remaining args>
s  status
e  edit
a  add
r  re-add
f  forget
d  diff
l  list
m  managed
p  source-path
EOF
				return $?
		esac
		command chezmoi "$cmd" "$@"
	}
if command -v git >/dev/null; then
	alias dot='git -C "$(chezmoi source-path)"'
	alias dots='git -C "$(chezmoi source-path)" status'
	alias dotl='git -C "$(chezmoi source-path)" lg' # log + format
fi
fi

if [ -d "${HOME}/dev" ]; then
	alias cdd='cd "${HOME}/dev"'
	if [ -d "${HOME}/dev/tmp" ]; then
		alias cdt='cd "${HOME}/dev/tmp"'
	fi
fi
if command -v tmux >/dev/null; then
	# Add shortcuts for
	# tm dir
	# tm arg1 arg2 [args...]
	tm() {
		if [ $# -eq 1 ]; then
			tmux new -c "$1"
		else
			tmux "$@"
		fi
	}
fi
if command -v fx >/dev/null; then
	export FX_NO_MOUSE=
fi

#
# Local settings to load late (not tracked in dotfiles).
#
if [ -f "${HOME}/.bashrc_local_late" ]; then
	. "${HOME}/.bashrc_local_late"
fi

#
# Must come after sourcing scripts to prevent braking dependencies on common
# programs.
#

if command -v 'batgrep' >/dev/null; then
	alias grep='batgrep'
fi
if command -v 'batdiff' >/dev/null; then
	alias diff='batdiff'
fi