bashrc

# cheuer's .bashrc file

# If not running interactively, don't do anything
[[ "$-" != *i* ]] && return

# Shell Options
#
# Use case-insensitive filename globbing
shopt -s nocaseglob
#
# ignore some typos
shopt -s cdspell
#
# Disable suspend
stty -ixon

# Completion options
#
# case-insensitive completion
bind "set completion-ignore-case on"
#
# show suggestions immediately
bind "set show-all-if-ambiguous on"
#
# show all suggestions
bind "set completion-query-items 0"

# History Options
#
# Unlimited history
HISTSIZE=-1
HISTFILEZIE=-1
#
# Don't put duplicate lines in the history.
export HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups
#
# Ignore some controlling instructions
export HISTIGNORE=$'[ \t]*:&:[fb]g:exit:ls:history:hist:??:???'
#
# Make bash append rather than overwrite the history on disk
shopt -s histappend

# Aliases
#
# override defaults
alias df='df -h'
alias du='du -h'
alias ls='ls -hN --color=tty --ignore="NTUSER.*" --ignore="ntuser.*"'
alias ll='ls -lA'
alias la='ls -A'
alias grep='grep -i --color=auto'
alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'
alias scp='__ssh_agent && scp'
alias ssh='__ssh_agent && ssh'
alias screen='screen -U' # always start screen in UTF-8 mode
alias sudo='sudo ' # expands other aliases when using sudo
#
# custom aliases
alias tunnel='ssh -fNL'
alias reload='source ~/.bashrc'
alias cls='printf "\033c"'
alias psh='ps -H'
alias ns='nslookup -nosearch -debug'
alias hist='history 20'
#
# git stuff
alias ga='git add'
alias gc='git commit -v'
alias gca='git commit -av'
alias gcm='git commit -m'
alias gd='git diff'
alias gds='git diff --staged'
alias gf='git fetch'
alias gg='git hist'
alias gs='git status -uno'

# conditional aliases
hash colordiff 2>/dev/null && alias diff=colordiff # use colordiff instead of diff if it exists
[ -f ~/.bash_aliases ] && source ~/.bash_aliases # load custom aliases if they exist

# other settings
hash vim 2>/dev/null && export EDITOR=$(which vim)
export TMOUT=0
[ -r ~/.ssh-agent ] && source ~/.ssh-agent >/dev/null
[ -r ~/.dircolors ] && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
[ -f ~/.git-completion.bash ] && source ~/.git-completion.bash # source git-completion if it exists
[ -f /etc/bash_completion ] && source /etc/bash_completion # source bash_completion if it exists

# use oh-my-posh, fallback to prompt_command
[ -d ~/.local ] && export PATH=$PATH:~/.local/bin
if command -v oh-my-posh &> /dev/null; then
	eval "$(oh-my-posh init bash --config ~/.dotfiles/ohmyposhv3.json)"
	function set_poshcontext(){
		__reload_history
	}
	export -f set_poshcontext
elif [[ -n $(readonly | grep PROMPT_COMMAND) ]]; then
    PS1="\[\e]0;\h:\w\a\]\[\e[0;32m\]\u@\h \[\e[0;33m\]\w\n\[\e[0m\]\$ "
else
    export PROMPT_COMMAND=__prompt_command
fi

# functions
function __prompt_command() {
	# inspired by https://notabug.org/demure/dotfiles/
	local EXIT=$? 		# capture previous exit code first
	__reload_history
	PS1=""

	### Colors to Vars ### {{{
	## Inspired by http://wiki.archlinux.org/index.php/Color_Bash_Prompt#List_of_colors_for_prompt_and_Bash
	## Terminal Control Escape Sequences: http://www.termsys.demon.co.uk/vtansi.htm
	## Consider using some of: https://gist.github.com/bcap/5682077#file-terminal-control-sh
	## Can unset with `unset -v {,B,U,I,BI,On_,On_I}{Bla,Red,Gre,Yel,Blu,Pur,Cya,Whi} RCol`
	local RCol='\[\e[0m\]'	# Text Reset

	# Regular					Bold						Underline					High Intensity				BoldHigh Intensity			Background				High Intensity Backgrounds
	local Bla='\[\e[0;30m\]';	local BBla='\[\e[1;30m\]';	local UBla='\[\e[4;30m\]';	local IBla='\[\e[0;90m\]';	local BIBla='\[\e[1;90m\]';	local On_Bla='\e[40m';	local On_IBla='\[\e[0;100m\]';
	local Red='\[\e[0;31m\]';	local BRed='\[\e[1;31m\]';	local URed='\[\e[4;31m\]';	local IRed='\[\e[0;91m\]';	local BIRed='\[\e[1;91m\]';	local On_Red='\e[41m';	local On_IRed='\[\e[0;101m\]';
	local Gre='\[\e[0;32m\]';	local BGre='\[\e[1;32m\]';	local UGre='\[\e[4;32m\]';	local IGre='\[\e[0;92m\]';	local BIGre='\[\e[1;92m\]';	local On_Gre='\e[42m';	local On_IGre='\[\e[0;102m\]';
	local Yel='\[\e[0;33m\]';	local BYel='\[\e[1;33m\]';	local UYel='\[\e[4;33m\]';	local IYel='\[\e[0;93m\]';	local BIYel='\[\e[1;93m\]';	local On_Yel='\e[43m';	local On_IYel='\[\e[0;103m\]';
	local Blu='\[\e[0;34m\]';	local BBlu='\[\e[1;34m\]';	local UBlu='\[\e[4;34m\]';	local IBlu='\[\e[0;94m\]';	local BIBlu='\[\e[1;94m\]';	local On_Blu='\e[44m';	local On_IBlu='\[\e[0;104m\]';
	local Pur='\[\e[0;35m\]';	local BPur='\[\e[1;35m\]';	local UPur='\[\e[4;35m\]';	local IPur='\[\e[0;95m\]';	local BIPur='\[\e[1;95m\]';	local On_Pur='\e[45m';	local On_IPur='\[\e[0;105m\]';
	local Cya='\[\e[0;36m\]';	local BCya='\[\e[1;36m\]';	local UCya='\[\e[4;36m\]';	local ICya='\[\e[0;96m\]';	local BICya='\[\e[1;96m\]';	local On_Cya='\e[46m';	local On_ICya='\[\e[0;106m\]';
	local Whi='\[\e[0;37m\]';	local BWhi='\[\e[1;37m\]';	local UWhi='\[\e[4;37m\]';	local IWhi='\[\e[0;97m\]';	local BIWhi='\[\e[1;97m\]';	local On_Whi='\e[47m';	local On_IWhi='\[\e[0;107m\]';
	### End Color Vars ### }}}

	# handy unicode symbols
	local FancyX='\342\234\227'
	local Checkmark='\342\234\223'

	# check for SSH shell
	if [[ $(who -l) =~ ^LOGIN ]]; then
		PS1+="\[\e]0;\h:\w\a\]"			# set window title to host:working_dir
	else
		PS1+="\[\e]0;\w\a\]"			# set window title to working_dir
	fi

	# show previous command exit status
	if [ $EXIT = 0 ]; then
		PS1+="${BGre}${Checkmark} "
	else
		PS1+="${BRed}${FancyX} ${EXIT} "
	fi

	# colorize user@host
	if [ $UID = 0 ]; then
		PS1+="${Red}"
	else
		PS1+="${Gre}"
	fi
	PS1+="\u@\h"						# add user@host

	### Check Jobs ### {{{
	local BKGJBS=$(jobs -r | wc -l)
	local TOTJBS=$(jobs | grep -v __prompt_command | wc -l)
	if [ ${TOTJBS} -gt 0 ]; then
		PS1+=" ${RCol}[jobs:"
		if [ ${TOTJBS} -gt 2 ]; then
			PS1+=" ${Red}"
		fi
		PS1+="${BKGJBS}/${TOTJBS}${RCol}]"
	fi
	### End Jobs ### }}}

	PS1+="${Yel} \w"					# show working directory

	# add git prompt
	if type __git_ps1 > /dev/null 2>&1 ;
	then
		GIT_PS1_SHOWDIRTYSTATE=1
		# GIT_PS1_SHOWUNTRACKEDFILES=1 #designated with %
		GIT_PS1_SHOWUPSTREAM="auto"
		GIT_PS1_SHOWCOLORHINTS=true
		local RESULT="$(__git_ps1 '(%s)')"
		PS1+="${RCol} ${RESULT}"
	fi

	PS1+="\n"							# put prompt on next line
	# PS1+="${Pur}\! "					# show history number
	PS1+="${RCol}\$ "
}

function __reload_history() {
	builtin history -a		# write the previous history line to disk
	HISTFILESIZE=$HISTSIZE	# prevent history number from changing
	builtin history -c		# clear current history
	builtin history -r		# reload history
}

function __ssh_agent() {
	# If no SSH agent is already running, start one now. Re-use sockets so we never
	# have to start more than one session.

	ssh-add -l >/dev/null 2>&1
	result=$?
	if [ $result = 2 ]; then
		# read ssh-agent config from file and retry
		[ -r ~/.ssh-agent ] && source ~/.ssh-agent >/dev/null
		ssh-add -l >/dev/null 2>&1
		result=$?
		if [ $result = 2 ]; then
			if hash pageant 2>/dev/null && hash ssh-pageant 2>/dev/null; then
				if [[ -z $(ps -W | grep pageant) ]]; then
					cygstart pageant
				fi
				ssh-pageant > ~/.ssh-agent
			else
				ssh-agent > ~/.ssh-agent
			fi
			source ~/.ssh-agent >/dev/null
			ssh-add -l >/dev/null 2>&1
			result=$?
		fi
	fi
	if [ $result = 1 ]; then
		ssh-add
	fi
}

# https://askubuntu.com/a/884513
function color_explain() {
	# For each entry in LS_COLORS, print the type, and description if available,
	# in the relevant color.
	# If two adjacent colors are the same, keep them on one line.

	declare -A descriptions=(
		[bd]="block device"
		[ca]="file with capability"
		[cd]="character device"
		[di]="directory"
		[do]="door"
		[ex]="executable file"
		[fi]="regular file"
		[ln]="symbolic link"
		[mh]="multi-hardlink"
		[mi]="missing file"
		[no]="normal non-filename text"
		[or]="orphan symlink"
		[ow]="other-writable directory"
		[pi]="named pipe, AKA FIFO"
		[rs]="reset to no color"
		[sg]="set-group-ID"
		[so]="socket"
		[st]="sticky directory"
		[su]="set-user-ID"
		[tw]="sticky and other-writable directory"
	)

	IFS=:
	for ls_color in $LS_COLORS; do
		color="${ls_color#*=}"
		type="${ls_color%=*}"

		# Add description for named types.
		desc="${descriptions[$type]}"

		# Separate each color with a newline.
		if [[ $color_prev ]] && [[ $color != "$color_prev" ]]; then
			echo
		fi

		printf "\e[%sm%s%s\e[m " "$color" "$type" "${desc:+ ($desc)}"

		# For next loop
		color_prev="$color"
	done
	echo
}

function colors() {
	cat <<EOF
   \e[30;40m      \e[1;30;40m     \e[30;4;40m    \e[1;30;4;40m    \e[30;5;40m    \e[1;30;5;40m 
   \e[31;40m      \e[1;31;40m     \e[31;4;40m    \e[1;31;4;40m    \e[31;5;40m    \e[1;31;5;40m 
   \e[32;40m      \e[1;32;40m     \e[32;4;40m    \e[1;32;4;40m    \e[32;5;40m    \e[1;32;5;40m 
   \e[33;40m      \e[1;33;40m     \e[33;4;40m    \e[1;33;4;40m    \e[33;5;40m    \e[1;33;5;40m 
   \e[34;40m      \e[1;34;40m     \e[34;4;40m    \e[1;34;4;40m    \e[34;5;40m    \e[1;34;5;40m 
   \e[35;40m      \e[1;35;40m     \e[35;4;40m    \e[1;35;4;40m    \e[35;5;40m    \e[1;35;5;40m 
   \e[36;40m      \e[1;36;40m     \e[36;4;40m    \e[1;36;4;40m    \e[36;5;40m    \e[1;36;5;40m 
   \e[37;40m      \e[1;37;40m     \e[37;4;40m    \e[1;37;4;40m    \e[37;5;40m    \e[1;37;5;40m 
   \e[30;41m      \e[1;30;41m     \e[30;4;41m    \e[1;30;4;41m    \e[30;5;41m    \e[1;30;5;41m 
   \e[31;41m      \e[1;31;41m     \e[31;4;41m    \e[1;31;4;41m    \e[31;5;41m    \e[1;31;5;41m 
   \e[32;41m      \e[1;32;41m     \e[32;4;41m    \e[1;32;4;41m    \e[32;5;41m    \e[1;32;5;41m 
   \e[33;41m      \e[1;33;41m     \e[33;4;41m    \e[1;33;4;41m    \e[33;5;41m    \e[1;33;5;41m 
   \e[34;41m      \e[1;34;41m     \e[34;4;41m    \e[1;34;4;41m    \e[34;5;41m    \e[1;34;5;41m 
   \e[35;41m      \e[1;35;41m     \e[35;4;41m    \e[1;35;4;41m    \e[35;5;41m    \e[1;35;5;41m 
   \e[36;41m      \e[1;36;41m     \e[36;4;41m    \e[1;36;4;41m    \e[36;5;41m    \e[1;36;5;41m 
   \e[37;41m      \e[1;37;41m     \e[37;4;41m    \e[1;37;4;41m    \e[37;5;41m    \e[1;37;5;41m 
   \e[30;42m      \e[1;30;42m     \e[30;4;42m    \e[1;30;4;42m    \e[30;5;42m    \e[1;30;5;42m 
   \e[31;42m      \e[1;31;42m     \e[31;4;42m    \e[1;31;4;42m    \e[31;5;42m    \e[1;31;5;42m 
   \e[32;42m      \e[1;32;42m     \e[32;4;42m    \e[1;32;4;42m    \e[32;5;42m    \e[1;32;5;42m 
   \e[33;42m      \e[1;33;42m     \e[33;4;42m    \e[1;33;4;42m    \e[33;5;42m    \e[1;33;5;42m 
   \e[34;42m      \e[1;34;42m     \e[34;4;42m    \e[1;34;4;42m    \e[34;5;42m    \e[1;34;5;42m 
   \e[35;42m      \e[1;35;42m     \e[35;4;42m    \e[1;35;4;42m    \e[35;5;42m    \e[1;35;5;42m 
   \e[36;42m      \e[1;36;42m     \e[36;4;42m    \e[1;36;4;42m    \e[36;5;42m    \e[1;36;5;42m 
   \e[37;42m      \e[1;37;42m     \e[37;4;42m    \e[1;37;4;42m    \e[37;5;42m    \e[1;37;5;42m 
   \e[30;43m      \e[1;30;43m     \e[30;4;43m    \e[1;30;4;43m    \e[30;5;43m    \e[1;30;5;43m 
   \e[31;43m      \e[1;31;43m     \e[31;4;43m    \e[1;31;4;43m    \e[31;5;43m    \e[1;31;5;43m 
   \e[32;43m      \e[1;32;43m     \e[32;4;43m    \e[1;32;4;43m    \e[32;5;43m    \e[1;32;5;43m 
   \e[33;43m      \e[1;33;43m     \e[33;4;43m    \e[1;33;4;43m    \e[33;5;43m    \e[1;33;5;43m 
   \e[34;43m      \e[1;34;43m     \e[34;4;43m    \e[1;34;4;43m    \e[34;5;43m    \e[1;34;5;43m 
   \e[35;43m      \e[1;35;43m     \e[35;4;43m    \e[1;35;4;43m    \e[35;5;43m    \e[1;35;5;43m 
   \e[36;43m      \e[1;36;43m     \e[36;4;43m    \e[1;36;4;43m    \e[36;5;43m    \e[1;36;5;43m 
   \e[37;43m      \e[1;37;43m     \e[37;4;43m    \e[1;37;4;43m    \e[37;5;43m    \e[1;37;5;43m 
   \e[30;44m      \e[1;30;44m     \e[30;4;44m    \e[1;30;4;44m    \e[30;5;44m    \e[1;30;5;44m 
   \e[31;44m      \e[1;31;44m     \e[31;4;44m    \e[1;31;4;44m    \e[31;5;44m    \e[1;31;5;44m 
   \e[32;44m      \e[1;32;44m     \e[32;4;44m    \e[1;32;4;44m    \e[32;5;44m    \e[1;32;5;44m 
   \e[33;44m      \e[1;33;44m     \e[33;4;44m    \e[1;33;4;44m    \e[33;5;44m    \e[1;33;5;44m 
   \e[34;44m      \e[1;34;44m     \e[34;4;44m    \e[1;34;4;44m    \e[34;5;44m    \e[1;34;5;44m 
   \e[35;44m      \e[1;35;44m     \e[35;4;44m    \e[1;35;4;44m    \e[35;5;44m    \e[1;35;5;44m 
   \e[36;44m      \e[1;36;44m     \e[36;4;44m    \e[1;36;4;44m    \e[36;5;44m    \e[1;36;5;44m 
   \e[37;44m      \e[1;37;44m     \e[37;4;44m    \e[1;37;4;44m    \e[37;5;44m    \e[1;37;5;44m 
   \e[30;45m      \e[1;30;45m     \e[30;4;45m    \e[1;30;4;45m    \e[30;5;45m    \e[1;30;5;45m 
   \e[31;45m      \e[1;31;45m     \e[31;4;45m    \e[1;31;4;45m    \e[31;5;45m    \e[1;31;5;45m 
   \e[32;45m      \e[1;32;45m     \e[32;4;45m    \e[1;32;4;45m    \e[32;5;45m    \e[1;32;5;45m 
   \e[33;45m      \e[1;33;45m     \e[33;4;45m    \e[1;33;4;45m    \e[33;5;45m    \e[1;33;5;45m 
   \e[34;45m      \e[1;34;45m     \e[34;4;45m    \e[1;34;4;45m    \e[34;5;45m    \e[1;34;5;45m 
   \e[35;45m      \e[1;35;45m     \e[35;4;45m    \e[1;35;4;45m    \e[35;5;45m    \e[1;35;5;45m 
   \e[36;45m      \e[1;36;45m     \e[36;4;45m    \e[1;36;4;45m    \e[36;5;45m    \e[1;36;5;45m 
   \e[37;45m      \e[1;37;45m     \e[37;4;45m    \e[1;37;4;45m    \e[37;5;45m    \e[1;37;5;45m 
   \e[30;46m      \e[1;30;46m     \e[30;4;46m    \e[1;30;4;46m    \e[30;5;46m    \e[1;30;5;46m 
   \e[31;46m      \e[1;31;46m     \e[31;4;46m    \e[1;31;4;46m    \e[31;5;46m    \e[1;31;5;46m 
   \e[32;46m      \e[1;32;46m     \e[32;4;46m    \e[1;32;4;46m    \e[32;5;46m    \e[1;32;5;46m 
   \e[33;46m      \e[1;33;46m     \e[33;4;46m    \e[1;33;4;46m    \e[33;5;46m    \e[1;33;5;46m 
   \e[34;46m      \e[1;34;46m     \e[34;4;46m    \e[1;34;4;46m    \e[34;5;46m    \e[1;34;5;46m 
   \e[35;46m      \e[1;35;46m     \e[35;4;46m    \e[1;35;4;46m    \e[35;5;46m    \e[1;35;5;46m 
   \e[36;46m      \e[1;36;46m     \e[36;4;46m    \e[1;36;4;46m    \e[36;5;46m    \e[1;36;5;46m 
   \e[37;46m      \e[1;37;46m     \e[37;4;46m    \e[1;37;4;46m    \e[37;5;46m    \e[1;37;5;46m 
   \e[30;47m      \e[1;30;47m     \e[30;4;47m    \e[1;30;4;47m    \e[30;5;47m    \e[1;30;5;47m 
   \e[31;47m      \e[1;31;47m     \e[31;4;47m    \e[1;31;4;47m    \e[31;5;47m    \e[1;31;5;47m 
   \e[32;47m      \e[1;32;47m     \e[32;4;47m    \e[1;32;4;47m    \e[32;5;47m    \e[1;32;5;47m 
   \e[33;47m      \e[1;33;47m     \e[33;4;47m    \e[1;33;4;47m    \e[33;5;47m    \e[1;33;5;47m 
   \e[34;47m      \e[1;34;47m     \e[34;4;47m    \e[1;34;4;47m    \e[34;5;47m    \e[1;34;5;47m 
   \e[35;47m      \e[1;35;47m     \e[35;4;47m    \e[1;35;4;47m    \e[35;5;47m    \e[1;35;5;47m 
   \e[36;47m      \e[1;36;47m     \e[36;4;47m    \e[1;36;4;47m    \e[36;5;47m    \e[1;36;5;47m 
   \e[37;47m      \e[1;37;47m     \e[37;4;47m    \e[1;37;4;47m    \e[37;5;47m    \e[1;37;5;47m 
EOF
}

function count_folders() {
	shopt -s nullglob
	for dir in ./*/
	do
		printf '%s\n' "$dir"
		find "$dir" -mindepth 1 -type d -printf x | wc --chars
	done
}

function findedit() {
	$EDITOR $(find -name $1)
}

# cygwin-only settings
if [[ -d /cygdrive/ || -d /c/ ]]; then

	if [[ ! -x $EDITOR ]]; then
		export EDITOR="~/.dotfiles/npp.sh"
	fi

	# notepad++
	function npp() {
		opts=""
		for ((arg=1; arg <= $#; arg++))
		do
			opts="$opts `cygpath -wa ${!arg}`"
			if [ ! -f ${!arg} ]
			then
				touch ${!arg}
			fi
		done

		run "C:\Program Files (x86)\Notepad++\notepad++.exe" -nosession $opts
	}

fi

# check for dotfile updates & reload this file
[ ! -e ~/.dotfiles/.update_check ] && touch -t 197001010000 ~/.dotfiles/.update_check
if [[ $(( $(date +%s) - $(date +%s -r ~/.dotfiles/.update_check) )) -gt 28800 ]]; then
	echo Updating dotfiles...
	~/.dotfiles/update.sh
	touch ~/.dotfiles/.update_check
	source ~/.bashrc
fi