### Andrew's .bashrc



#                  _                                      _   
#   ___ _ ____   _(_)_ __ ___  _ __  _ __ ___   ___ _ __ | |_ 
#  / _ \ '_ \ \ / / | '__/ _ \| '_ \| '_ ` _ \ / _ \ '_ \| __|
# |  __/ | | \ V /| | | | (_) | | | | | | | | |  __/ | | | |_ 
#  \___|_| |_|\_/ |_|_|  \___/|_| |_|_| |_| |_|\___|_| |_|\__|
                                                            

# Set some defaults.
export EDITOR="emacsclient -t"
export VISUAL="emacsclient -c -a emacs"
export ALTERNATE_EDITOR=""
export PATH=".:~/bin:~/.local/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin"
export LSCOLORS="ExGxBxDxCxEgEdxbxgxcxd"

if [[-d 



# checks (stolen from zshuery)
if [[ $(uname) = 'Linux' ]]; then
    IS_LINUX=1
fi

if [[ $(uname) = 'Darwin' ]]; then
    IS_MAC=1
fi

if [[ -x `which brew >/dev/null 2>&1` ]]; then
    HAS_BREW=1
fi

if [[ -x `which apt-get >/dev/null 2>&1` ]]; then
    sdfHAS_APT=1
fi



#                                  _   
#  _ __  _ __ ___  _ __ ___  _ __ | |_ 
# | '_ \| '__/ _ \| '_ ` _ \| '_ \| __|
# | |_) | | | (_) | | | | | | |_) | |_ 
# | .__/|_|  \___/|_| |_| |_| .__/ \__|
# |_|                       |_|        


# define useful aliases for color codes
sh_norm="\[\033[0m\]"
sh_black="\[\033[0;30m\]"
sh_dark_gray="\[\033[1;30m\]"
sh_blue="\[\033[0;34m\]"
sh_light_blue="\[\033[1;34m\]"
sh_green="\[\033[0;32m\]"
sh_light_green="\[\033[1;32m\]"
sh_cyan="\[\033[0;36m\]"
sh_light_cyan="\[\033[1;36m\]"
sh_red="\[\033[0;31m\]"
sh_light_red="\[\033[1;31m\]"
sh_purple="\[\033[0;35m\]"
sh_light_purple="\[\033[1;35m\]"
sh_brown="\[\033[0;33m\]"
sh_yellow="\[\033[1;33m\]"
sh_light_gray="\[\033[0;37m\]"
sh_white="\[\033[1;37m\]"

function git_prompt {
	PCHANGED=""
	PAHEAD=""
	PBEHIND=""
    local FULL_BRANCH="$(git symbolic-ref -q HEAD 2>/dev/null || git name-rev --name-only --no-undefined --always HEAD 2>/dev/null)"
    PBRANCH="$(echo $FULL_BRANCH | sed 's/refs\/heads\///')"
    if [ -n $PBRANCH ]; then
        echo -n "${PBRANCH} "
        # Are there unstaged changes in the working directory
        local CHANGED=$(git status --porcelain --ignore-submodule -unormal 2>/dev/null | wc -l)
        if [ $CHANGED -gt 0 ]; then
            PCHANGED="◊"
        fi
        # Are we behind the origin?
        local NUM_BEHIND="$(git log --oneline ..@{u} 2>/dev/null | wc -l | tr -d ' ' )"
        if [ "$NUM_BEHIND" -gt 0 ]; then
            PBEHIND="↓"
        fi
        # Are we ahead of the origin?
        local NUM_AHEAD="$(git log --oneline @{u}.. 2>/dev/null | wc -l | tr -d ' ')"
        if [ "$NUM_AHEAD" -gt 0 ]; then
            PAHEAD="↑"
        fi

        if [[ -n $PCHANGED || -n $PAHEAD || -n $PBEHIND ]]; then
            echo -n "${PCHANGED}${PBEHIND}${PAHEAD}"
        fi
    fi
}



# Make a pretty prompt.
export PROMPT_COMMAND='history -a; if [ $? -ne 0 ];then ERROR_FLAG=1;else ERROR_FLAG=;fi;'
export PS1=${HOSTCOLOUR}${sh_light_gray}'\h'${sh_green}':\w'${sh_light_gray}' $(git_prompt)'${sh_light_gray}'${ERROR_FLAG:+'${sh_light_red}'}\$ '${sh_norm}

# New files and folders should not be world readable
umask 0027

# Borrow features from sensible.bash

# Trim long paths in prompt
PROMPT_DIRTRIM=2

# Update window size after every command
shopt -s checkwinsize





#  _     _     _                   
# | |__ (_)___| |_ ___  _ __ _   _ 
# | '_ \| / __| __/ _ \| '__| | | |
# | | | | \__ \ || (_) | |  | |_| |
# |_| |_|_|___/\__\___/|_|   \__, |
#                            |___/ 

# Append history don't overwrite
shopt -s histappend

# Save multi-line commands as one line
shopt -s cmdhist

# Avoid duplicate entries
export HISTCONTROL="erasedups:ignoreboth"

# Use ISO8601 time format for history file.
export HISTTIMEFORMAT='%F %T '

# Big history file
HISTSIZE=500000
HISTFILESIZE=100000




#        _ _                     
#   __ _| (_) __ _ ___  ___  ___ 
#  / _` | | |/ _` / __|/ _ \/ __|
# | (_| | | | (_| \__ \  __/\__ \
#  \__,_|_|_|\__,_|___/\___||___/

# jump down the tree.
alias ..="cd .."

# empty the screen (or use C-l)
alias c="clear"

# why wouldn't you want human readable sizes?
alias df="df -h"

# get outta here!
alias e="exit"

# grep shortie
alias g="grep --color=auto -i "

# shorter ls
alias l="ls -G --color"

# list files with details
alias ll="ls -lh --color"

# list all files.
alias la="ls -alh --color"

# List directories.
alias ld="ls --color -Gd */"

# add some color to grep.
alias grep="grep --color=auto"

# make the whole directory tree if required and let us know about it.
alias mkdir="mkdir -p -v "

# don't ping forever.
#alias ping="ping -c5"

# refresh the shell customizations without opening a new one.
alias refresh="source ~/.bashrc && hash -r"

# A python calculator
alias pc='python -ic "from __future__ import division; from math import *"'

# Start nano with line numbering no wrapping and autoindenting
alias nano='nano -ciw '

# shortcut for tmux command
alias tm="tmux new-session -A -s main"

# emacsclient
alias ec="emacsclient -n -c -a emacs"





#   __                  _   _                 
#  / _|_   _ _ __   ___| |_(_) ___  _ __  ___ 
# | |_| | | | '_ \ / __| __| |/ _ \| '_ \/ __|
# |  _| |_| | | | | (__| |_| | (_) | | | \__ \
# |_|  \__,_|_| |_|\___|\__|_|\___/|_| |_|___/
                                            
# General purpose extract command.
extract () {
	if [ -f $1 ] ; then
		case $1 in
			*.tar.bz2)	    tar xjf $1		;;
			*.tar.gz)		tar xzf $1		;;
			*.tar.xz)       tar xJf $1      ;;
			*.bz2)			bunzip2 $1		;;
			*.rar)			rar x $1		;;
			*.gz)			gunzip $1		;;
			*.tar)			tar xf $1		;;
			*.tbz2)			tar xjf $1		;;
			*.tgz)			tar xzf $1		;;
			*.zip)			unzip $1		;;
			*.Z)			uncompress $1	;;
			*.7z)			7za e $1        ;;
			*.xz)           xz -dv $1       ;;
			*)			echo "'$1' cannot be extracted via extract()" ;;
		esac
	else
		echo "'$1' is not a valid file"
	fi
}


# General purpose backup command.
bu () { tar czf  ~/.backup/`basename $1`-`date +%Y%m%d%H%M`.tgz $1; }

# create an archive of a list of files, compress the archive, and encrypt the compressed archive 
function archive-and-encrypt {
    echo -n "Enter desired output filename: "
    read filename
    tar cJ $1 | \
    gpg -q -r andrew@amdavidson.com -s -e -o "$filename.tar.xz.gpg"
}


# run mosh and tmux to a specific host
function mt {
    mosh $1 -- tmux new-session -A -s main
}




#  _                            _       
# (_)_ __ ___  _ __   ___  _ __| |_ ___ 
# | | '_ ` _ \| '_ \ / _ \| '__| __/ __|
# | | | | | | | |_) | (_) | |  | |_\__ \
# |_|_| |_| |_| .__/ \___/|_|   \__|___/
#             |_|                       

# import fzf if possible

# Debian
if [ -d /usr/share/doc/fzf/examples ]; then
	source /usr/share/doc/fzf/examples/key-bindings.bash

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

# MacOS 
if [ -d /opt/homebrew/opt/fzf/shell ]; then
	source /opt/homebrew/opt/fzf/shell/key-bindings.bash
	source /opt/homebrew/opt/fzf/shell/completion.bash
fi



# Import local extensions if needed.
if [ -f $HOME/.bashrc_local ]; then
	source $HOME/.bashrc_local
fi