.bashrc

# shellcheck disable=SC2148
# /etc/skel/.bashrc
# This bashrc file is created by Chawye Hsu, licensed under the MIT license.
#------------------------------------------------------------------------------#
# Support Platforms:
#    Windows: Git-Bash/MSYS2/MinGW
#      macOS: Bash
#      Linux: Bash
#------------------------------------------------------------------------------#
# Test for an interactive shell.
[[ $- != *i* ]] && return
#-----------------------#
# Environment Variables #
#-----------------------#
export LANG=en_US.UTF-8
export TZ=UTC-8
# default editor
export EDITOR=nano
# Always display git dirty state
export GIT_PS1_SHOWDIRTYSTATE=1
# Enable Node.js (chalk) color
export FORCE_COLOR=1
# Xterm colors
[ "$TERM" == "xterm" ] && export TERM=xterm-256color
# XDG environment variables
export XDG_CONFIG_HOME="$HOME/.config"
export XDG_CACHE_HOME="$HOME/.cache"
export XDG_DATA_HOME="$HOME/.local/share"
export XDG_STATE_HOME="$HOME/.local/state"
# XDG compliance
export NPM_CONFIG_USERCONFIG="$XDG_CONFIG_HOME/npm/npmrc"
# PATH updates - Add `~/.local/bin`:
_localbin="$HOME/.local/bin"
if [[ -d "$_localbin" && ":$PATH:" != *":$_localbin:"* ]]; then
  export PATH="$_localbin:$PATH"
fi
# PATH updates -
case "$OSTYPE" in
  darwin*)
    # NOTES: macOS's default PATH (definition in `/etc/paths`):
    #   "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    #
    # A `/Library/Apple/usr/bin` path will be added when the
    # Xcode command line tools is installed.

    # PATH updates - Add super bin directory installed by Homebrew:
    if [[ -d "/usr/local/sbin" && ":$PATH:" != *":/usr/local/sbin:"* ]]; then
      export PATH="/usr/local/sbin:$PATH"
    fi

    # bash-completion:
    _bashcomp="/usr/local/etc/bash_completion"
    # shellcheck disable=SC1090
    [ -f "$_bashcomp" ] && source "$_bashcomp"

    # Ruby rbenv:
    [ -x "$(command -v rbenv)" ] && eval "$(rbenv init -)"
    ;;
  linux*)
    # PATH updates - Add linuxbrew:
    _linuxbrew1="/home/linuxbrew/.linuxbrew/bin/brew" # sudo
    [[ -f $_linuxbrew1 ]] && eval "$($_linuxbrew1 shellenv)"
    _linuxbrew2="$HOME/.linuxbrew/bin/brew" # non sudo
    [[ -f $_linuxbrew2 ]] && eval "$($_linuxbrew2 shellenv)"

    # Add git-prompt (Arch Linux):
    _gitprompt="/usr/share/git/completion/git-prompt.sh"
    # shellcheck disable=SC1090
    [ -f "$_gitprompt" ] && source "$_gitprompt"
esac
#--------------------#
#  ls and dircolors  #
#--------------------#
# LS_COLORS generated by [vivid](https://github.com/sharkdp/vivid)
if [ -x "$(command -v vivid)" ]; then
  # shellcheck disable=SC2155
  export LS_COLORS="$(vivid -m 8-bit generate snazzy)"
fi
# Uniform `ls` command on all platforms
case "$OSTYPE" in
  darwin*)
    if [ -x "$(command -v gls)" ]; then
      alias ls='gls -F --group-directories-first --color' # GNU ls
    else
      alias ls="ls -F -G" # BSD/macOS ls
    fi
    ;;
  linux*|msys*)
    # Too many unconcerned files and directories in Windows $HOME, ignore them.
    ignoreList=("_viminfo" "navdb.csv" "NTUSER*" "ntuser*" "Local Settings*" \
      "Application Data*" "My Documents*" "NetHood*" "PrintHood*" "Recent*" \
      "SendTo*" "Templates*" "Cookies*" "3D Objects" "Thumbs.db" "Start Menu" \
      "desktop.ini" "Saved Games" "Creative Cloud Files")
    for item in "${ignoreList[@]}"; do
      lsIgnore+="'$item',"
    done

    # shellcheck disable=SC2139
    alias ls="ls -F --group-directories-first --color --ignore={$lsIgnore}"
    ;;
esac
alias l="ls"
alias la="ls -A"
alias ll="ls -lh"
alias lla="ls -lhA"

#---------------#
# Unify Aliases #
#---------------#
alias c="clear"
alias :q="exit"
alias ..="cd .."
alias ...="cd ../.."
alias myip="curl -s https://api.ip.sb/ip"
alias cls="clear"
case "$OSTYPE" in
  darwin*)
    alias here="open ."
    ;;
  msys*)
    # winpty fixes
    alias ipconfig="winpty ipconfig"
    alias nslookup="winpty nslookup"
    alias ping="winpty ping"
    # Emulate ifconfig on Windows MSYS
    alias ifconfig="ipconfig"
    alias open="explorer"
    alias here="open ."
    ;;
esac
#-------------------------------------#
#  ssh-agent on Git-Bash/MSYS2/MinGW  #
#-------------------------------------#
# ref: https://help.github.com/articles/working-with-ssh-key-passphrases/
if [ "$OSTYPE" == "msys" ] && [ -x "$(command -v ssh)" ]; then
  # ensure .ssh directory exists
  [ ! -d "$HOME/.ssh" ] && mkdir -p "$HOME/.ssh" >| /dev/null
  # test ssh is Win32-OpenSSH or not
  if [[ ! "$(ssh -V 2>&1)" == *"Windows"* ]]; then
    # we use $USERPROFILE instead of $HOME to locate SSH ENV,
    # so we can share ssh env between Git-Bash and MSYS2,
    # but be aware of that Win32-OpenSSH does not use SSH ENV
    agentenv="$HOME/.ssh/agent.env"
    # load ssh env
    # shellcheck disable=SC1090
    [ -f "$agentenv" ] && source "$agentenv" >| /dev/null
    # agentstatus:
    #   0=agent running w/ key;
    #   1=agent w/o key;
    #   2=agent not running.
    agentstatus=$(ssh-add -l >| /dev/null 2>&1; echo $?)
    if [ ! "$SSH_AUTH_SOCK" ] || [ "$agentstatus" -eq 2 ]; then
      # shellcheck disable=SC1090
      (umask 077; ssh-agent >| "$agentenv") && source "$agentenv" >| /dev/null
      ssh-add
    elif [ "$SSH_AUTH_SOCK" ] && [ "$agentstatus" -eq 1 ]; then
      ssh-add
    fi
    unset agentenv
  else
    ssh-agent >| /dev/null
    ssh-add
  fi
fi
#-------------------------------------#
# Program-languages specific settings #
#-------------------------------------#
# conda initialize
[ -x "$(command -v conda)" ] && eval "$(conda 'shell.bash' 'hook')"

#----------------------------#
# The Chawye's styled prompt #
#----------------------------#
function styled_prompt() {
  # Color table
  local   RESET="\[\033[0m\]"
  local   BLACK="\[\033[0;30m\]"
  local     RED="\[\033[0;31m\]"
  local   GREEN="\[\033[0;32m\]"
  local  YELLOW="\[\033[0;33m\]"
  local    BLUE="\[\033[0;34m\]"
  local MAGENTA="\[\033[0;35m\]"
  local    CYAN="\[\033[0;36m\]"
  local   WHITE="\[\033[0;37m\]"
  # Terminal title
  local TERMTITLE="\[\e]0; \w\a\]"

  # Special system environment detection: WSL, MSYS2/MinGW
  if [[ "$(uname -r)" == *"icrosoft"* ]]; then
    DIST="$MAGENTA(WSL)$RESET"
  elif [ -n "$MSYSTEM" ]; then
    DIST="$MAGENTA($MSYSTEM)$RESET"
  else
    DIST=""
  fi

  # git-prompt
  [ "$(type -t __git_ps1)" = 'function' ] && GITPS1="\$(__git_ps1 ' (%s)')"

  # PS1 command substitution issue with newline:
  #  https://stackoverflow.com/questions/33220492/
  #  https://stackoverflow.com/questions/21517281/
  # __git_ps1 not update issue:
  #  https://askubuntu.com/questions/896445/#comment2153553_1163371
  PS1="$TERMTITLE$GREEN\h$DIST $YELLOW\W$CYAN$GITPS1$RESET"$'\n\$ '
}
styled_prompt