.bashrc

#
# ~/.bashrc
# 2024  by mountaineerbr
#                         _        _                      ___      
# ._ _ _  ___  _ _ ._ _ _| |_ ___ <_>._ _  ___  ___  _ _ | . > _ _ 
# | ' ' |/ . \| | || ' | | | <_> || || ' |/ ._>/ ._>| '_>| . \| '_>
# |_|_|_|\___/`___||_|_| |_| <___||_||_|_|\___.\___.|_|  |___/|_|  
#
#                  _    ___                  
#  ___  ___  ___ _| |_ | . | _ _ _  ___  _ _ 
# / | '<_> |<_-<  | |  |   || | | |<_> || | |'
# \_|_.<___|/__/  |_|  |_|_||__/_/ <___|`_. |
#                                       <___''

# This file is sourced by all *interactive* bash shells on startup,
# including some apparently interactive shells such as scp and rcp
# that can't tolerate any output. So make sure this doesn't display
# anything or bad things will happen !

# Test for an interactive shell. There is no need to set anything
# past this point for scp and rcp, and it's important to refrain from
# outputting anything in those cases.

# If not running interactively, don't do anything
[[ $- != *i* ]] && return
#https://wiki.archlinux.org/index.php/Talk:Bash

#PS1 prompt
#colours
endc='\[\033[00m\]'
bwhite='\[\033[01;37;40m\]'
bcyan='\[\033[01;36m\]'
bgreen='\[\033[01;32m\]'
bpink='\[\033[01;35m\]'
bred='\[\033[01;31m\]'
yellow='\[\033[00;33m\]'

#common user
c0="$bgreen"
#root user
((EUID)) || c0="$bpink"

#widgets (ninja escaping required)
#check subshell level (needs run only once)
#OBS: SHLVL config depends on on your specific windowing system!
prompt_ssl_max=3
prompt_ssl=$( ((SHLVL >= prompt_ssl_max)) && echo "${yellow}+${endc}" )
#basic git integration (prints branch name)
prompt_git="\$( branch=\$(git rev-parse --abbrev-ref HEAD 2>/dev/null) && echo \"[${yellow}\${branch}${endc}] \" )"
#check exit code of last command line
prompt_exit="\$( ((e=\$? , e)) && echo \"${bred}\${e}${endc} \" )"
#check how many background jobs
#prompt_jobs='$([[ \j -gt 0 ]] && echo %\j)'
prompt_jobs='$([[ \j -gt 0 ]] && echo "(%\j)")'
#https://stackoverflow.com/questions/12646917/show-job-count-in-bash-prompt-only-if-nonzero

#number of trailing directory components to retain when expanding \w and \W
PROMPT_DIRTRIM=3
#set ps1 string
#PS1="${prompt_exit}${c0}\u${bwhite} \h:${bcyan}\w${endc} ${prompt_git}(\!${prompt_jobs})${prompt_ssl}\$ "
PS1="${prompt_exit}${c0}\u ${bwhite}\h:${bcyan}\w${endc} ${prompt_git}\${prompt_git:+ }${prompt_jobs}${prompt_ssl}\$ "
#keep environment clean
unset end bwhite bcyan bgreen bpink bred yellow c0 prompt_ssl_max prompt_ssl prompt_git prompt_exit prompt_jobs

#Brazilian flag prompt
#PS1='\[\e[1;33;42m\]<\[\e[1;36;42m\]•\[\e[1;33;42m\]>\[\e[m\] \w \$ '

#set XTerm title to current dir (see also TMUX set-titles)
_set_xterm_title()
{
	[[ -t 1 ]] || return
	[[ -z "$TMUX" ]] || return
	case $TERM in
		(sun-cmd)
			printf "\e]l%s\e\\" "${PWD/#$HOME/\~}"
			;;
		(*xterm*|rxvt|dtterm|kterm|Eterm)
			printf  "\e]2;%s\a" "${PWD/#$HOME/\~}"
			;;
	esac
}
#commands to run prior issuing primary prompt
PROMPT_COMMAND=( _set_xterm_title )
#https://tldp.org/HOWTO/Xterm-Title-3.html
#https://scriptingosx.com/2019/05/show-exit-code-in-your-bash-prompt/
#https://www.maketecheasier.com/8-useful-and-interesting-bash-prompts/#respond
#https://misc.flogisoft.com/bash/tip_colors_and_formatting
#https://www.reddit.com/r/linux/comments/94nh4w/what_is_your_ps1/

#history appending & relaoding the 'history list'
#	( -a ) append history lines from this session to the history file
#	( -n ) read all history lines not already read
#	from the history file and append them to the history list
#PROMPT_COMMAND+=('history -a' 'history -c' 'history -r')
PROMPT_COMMAND="${PROMPT_COMMAND%%;}; history -a; history -c; history -r"
#https://unix.stackexchange.com/questions/18212/bash-history-ignoredups-and-erasedups-setting-conflict-with-common-history
#https://www.shellhacks.com/tune-command-line-history-bash/
#http://web.archive.org/web/20090815205011/http://www.cuberick.com/2008/11/update-bash-history-in-realtime.html
#run `help history'

#history configuration
#max 'history file' size (in lines)
HISTSIZE=10000
#for 'history list' size
HISTFILESIZE=10000
#default HISTFILESIZE is set to follow HISTSIZE
#set custom history file
#HISTFILE="${HOME}/.bash_history"

#history duplicate controls
#history erases duplicates
HISTCONTROL=erasedups:ignoredups
#HISTCONTROL is a colon-separated list of values

#history ignore cmds
HISTIGNORE=bash:q:exit:x:su:sdh:sdr:shutdown

#history date format
HISTTIMEFORMAT="[%F %T]: "
#HISTTIMEFORMAT=$( echo -e "\033[0;32m[%F %T]:\033[0m " )
#end colour code: \033[0m
#https://gist.github.com/avelino/3188137


#globs will ignore filenames with control characters, leading dashes,
#or begin with a ".", as well as traditional hidden files (names beginning
#with "."), yet accept reasonable patterns (including those beginning with
#"./" and "../" and even multiple "../")
#GLOBIGNORE=`printf '.[!/.]*:..[!/]*:*/.[!/.]*:*/..[!/]*:*[\001-\037\177]*:-*'`
#https://dwheeler.com/essays/fixing-unix-linux-filenames.html


#SHell OPTions

#disable history substitution
set +H

#enable vi mode
#set -o vi

set -o noclobber  #override with >|

#glob
shopt -s globstar  #nocaseglob

#globs for excluding . and ..
#{ **/.[^.]*/**/*rc  **/..?*/**/*rc ;}
#https://unix.stackexchange.com/questions/75786/how-do-i-specify-arguments-to-return-all-dot-files-but-not-and

#lastpipe
#shopt -s lastpipe
#in interactive shell job control is active; disbale with 'set +m'
#if set, and job control is not active, the shell runs the last command of a pipeline not executed in the background in the current shell environment.

#history appending instead of overwriting
shopt -s histappend
#same as if i'history -a' is set in COMMAND_PROMPT

#history verificatioin before exec
# 	Results of history substitution are not immediately
#	passed to the shell parser (histverify)
shopt -s histreedit
#history cmd edition
# 	User is given the opportunity to re-edit a
#	failed history substitution (histreedit)
shopt -s histverify

#history & multi-line
# 	Easy re-editing of multi-line commands
#	Bash  attempts to save all lines of a
# 	multiple-line cmd in the same history entry
shopt -s cmdhist lithist

#cd magic for minor spelling fixes
# 	Minor errors in spelling of directory component
# 	in a cd command will be corrected. The errors
# 	checked for are transposed char, missing char,
# 	and one char too many.
shopt -s cdspell

#cd auto type
#	Add "cd" when entering just a path
# 	Bash automatically prepend cd
shopt -s autocd

#bash won't get SIGWINCH if another process is in the foreground.
#enable checkwinsize so that bash will check the terminal size when it regains control.
#http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)
shopt -s checkwinsize

#alias expansion
#shopt -s expand_aliases

#accidental exiting
#Ctrl+D conveniently exits Bash, sometimes too conveniently
#specify that it must be pressed twice to exit
#export IGNOREEOF=1

#dirs stack
#add current dir to stack (top of stack is nought)
#alias p.='pushd .'
#check dirs stack
#alias d='dirs -v'

#hack the cd command to remember where you have been
#function cd
#{
#    if [ $# -eq 0 ]; then
#        pushd ~ > /dev/null
#    elif [ " $1" = " -" ]; then
#        pushd "$OLDPWD" > /dev/null
#    else
#        pushd "$@" > /dev/null
#    fi
#}
#https://www.redhat.com/sysadmin/cd-command


##shell globbing
noglob_helper() {
	"$@"
	case "$shopts" in
		*noglob*) 	;;
		*) 	set +f ;;
	esac
	unset shopts
}
alias noglob='shopts="$SHELLOPTS"; set -f; noglob_helper'
#check: https://www.chiark.greenend.org.uk/~sgtatham/aliases.html

#custom ls
l()
{
	ls -hF --group-directories-first "${@}" \
		| cut -c1-22 | column -c 80
}
la()
{
	ls -ahF --group-directories-first "${@}" \
		| cut -c1-22 | column -c 80
}
alias ll="ls++ --potsf"
#https://unix.stackexchange.com/questions/112335/can-i-truncate-long-file-names-in-ls-listing/112341#112341

#cd and ls dir
cl()
{
	local dir="$*"
	# if no dir given, go home
	(($# < 1)) && dir="$HOME"

	# use your preferred ls command
	builtin cd "$dir" && ls -F --color=auto
}
#https://opensource.com/article/19/7/bash-aliases

#quit like in z-shell
alias bye=exit

#print compat
alias print=echo

# Enable aliases to be sudo’ed
#alias sudo='sudo '

# repeat loop
# usage: repeat 10 echo foo
repeat()
{
	local i=  count="$1"
	shift
	for i in $(seq 1 "$count")
	do 	eval "$@"
	done
}


##bash semaphore
#usage: semaphore [maximum_jobs] [sleep_time]
#example: while true ;do semaphore ; (cmd ;cmd) & done
semaphore()
{
	local jobs
	while jobs=( $(jobs -p) ) ;((${#jobs[@]} > ${1:-4})) ;do sleep ${2:-0.2} ;done
}

# Subfunction needed by `repeat'.
#seq ()
#{
# 	local lower upper output;
# 	lower=$1 upper=$2;
#
# 	if [ $lower -ge $upper ]; then return; fi
# 	while [ $lower -le $upper ];
# 	do
# 		echo -n "$lower "
# 		lower=$(($lower + 1))
# 	done
# 	echo "$lower"
#}


#some interesting stuff
#/usr/share/doc/bash/examples/{functions,misc,scripts,startup-files}
#also in bash source package


# Instalacao das Funcoes ZZ (www.funcoeszz.net)
export ZZOFF=""  # desligue funcoes indesejadas
export ZZPATH="$HOME/bin/more/funcoeszz/funcoeszz"  # script
export ZZDIR="$HOME/bin/more/funcoeszz/zz"    # pasta zz/
#source "$ZZPATH"

#ligar funcoezz
alias ZZ='source "'"$ZZPATH"'"'

#sources
for f in \
	/usr/share/bash-completion/bash_completion \
	/usr/share/doc/pkgfile/command-not-found.bash \
	~/.rc
do 	[[ -e "$f" ]] && . "$f"
done ;unset f

#the fuck
eval "$(thefuck --alias)"

##https://github.com/scop/bash-completion
##complete Cmd Names (-c and subsequent cmds)
##complete file names ( -f )
#complete -cf sudo
##this complete built-in may interfere with bash-completions
##https://forum.manjaro.org/t/how-to-auto-complete-a-command-with-sudo-privilege/50263/24