rustoceans/.bash_prompt

## .bash_prompt
#!/bin/bash

source "$(dirname $(readlink $BASH_SOURCE))/../os/utils.sh"

# ----------------------------------------------------------------------
# | Colors                                                             |
# ----------------------------------------------------------------------

enable_color_support() {

    declare OS="$(get_os)"

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    if [[ $COLORTERM == gnome-* && $TERM == xterm ]] \
        && infocmp xterm-256color &> /dev/null; then
        export TERM='xterm-256color'
    elif infocmp xterm-256color &> /dev/null; then
        export TERM='xterm-256color'
    fi

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    if [ "$OS" == 'osx' ]; then
        alias ls='ls -G' # or CLICOLOR=1
    elif [ "$OS" == 'ubuntu' ]; then
        if [ -x /usr/bin/dircolors ]; then

            test -r ~/.dircolors \
                && eval "$(dircolors -b ~/.dircolors)" \
                || eval "$(dircolors -b)"

            alias dir='dir --color=auto'
            alias egrep='egrep --color=auto'
            alias fgrep='fgrep --color=auto'
            alias grep='grep --color=auto'
            alias ls='ls -F --color=auto'
            alias vdir='vdir --color=auto'

        fi
    fi

}

set_ls_colors() {

    declare OS="$(get_os)"

    # There are several different implementations of color for ls:

    # ------------------------------------------------------------------
    # | FreeBSD / OS X                                                 |
    # ------------------------------------------------------------------

    #  - `ls` displays colors if the `-G` option is passed or if
    #    the `CLICOLOR` environment variable is set
    #
    #  - the actual colors are configured through the `LSCOLORS`
    #    environment variable (built-in defaults are used if this
    #    variable is not set)

    if [ "$OS" == 'osx' ]; then

        LSCOLORS=''

        LSCOLORS+='gx' # Directory
        LSCOLORS+='fx' # Symbolic link
        LSCOLORS+='cx' # Socket
        LSCOLORS+='dx' # Pipe
        LSCOLORS+='cx' # Executable
        LSCOLORS+='eg' # Block special
        LSCOLORS+='ed' # Character special
        LSCOLORS+='ab' # Executable with setuid bit set
        LSCOLORS+='ag' # Executable with setgid bit set
        LSCOLORS+='cc' # Directory writable to others, with sticky bit
        LSCOLORS+='bd' # Directory writable to others, without sticky bit

        export LSCOLORS

    # ------------------------------------------------------------------
    # | GNU                                                            |
    # ------------------------------------------------------------------

    #  - `ls` displays colors if the `--color` option is passed
    #
    #  - the actual colors are configured through the `LS_COLORS`
    #    environment variable (built-in defaults are used if this
    #    variable is not set)

    elif [ "$OS" == 'ubuntu' ]; then

        LS_COLORS=''

        LS_COLORS+='no=1;39:'   # global default
        LS_COLORS+='di=1;36:'   # directory
        LS_COLORS+='ex=1;32:'   # executable file
        LS_COLORS+='fi=1;39:'   # file
        LS_COLORS+='ec=:'       # non-filename text
        LS_COLORS+='mi=1;31:'   # non-existent file pointed to by a symlink
        LS_COLORS+='ln=target:' # symbolic link
        LS_COLORS+='or=31;01'   # symbolic link pointing to a non-existent file

        export LS_COLORS

    fi
}

# ----------------------------------------------------------------------
# | Prompts                                                            |
# ----------------------------------------------------------------------

# Note: Don't break this function into smaller, more specialized ones
# as you will only pollute the global space even more (this function
# cannot be unset due to the fact that it's called every time the prompt
# string is shown)

get_git_repository_details() {

    local branchName=''
    local tmp=''

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    # Check if the current directory is in a Git repository
    [ "$(git rev-parse &>/dev/null; printf $?)" -ne 0 ] && return

    # Check if in `.git/` directory (some of the following
    # checks don't make sense/won't work in the `.git` directory)
    [ "$(git rev-parse --is-inside-git-dir)" == "true" ] && return

    # Check for uncommitted changes in the index
    if ! $(git diff --quiet --ignore-submodules --cached); then
        tmp="$tmp+";
    fi

    # Check for unstaged changes
    if ! $(git diff-files --quiet --ignore-submodules --); then
        tmp="$tmp!";
    fi

    # Check for untracked files
    if [ -n "$(git ls-files --others --exclude-standard)" ]; then
        tmp="$tmp?";
    fi

    # Check for stashed files
    if $(git rev-parse --verify refs/stash &>/dev/null); then
        tmp="$tmp$";
    fi

    [ -n "$tmp" ] && tmp=" [$tmp]"


    branchName="$( printf "$( git rev-parse --abbrev-ref HEAD 2> /dev/null \
        || git rev-parse --short HEAD 2> /dev/null \
        || printf " (unknown)" )" | tr -d "\n" )"


    printf "%s" "$1$branchName$tmp"

}

set_prompts() {

    local black='' blue='' bold='' cyan='' green='' orange='' \
          purple='' red='' reset='' white='' yellow=''

    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    if [ -x /usr/bin/tput ] && tput setaf 1 &> /dev/null; then

        tput sgr0 # Reset colors


        bold=$(tput bold)
        reset=$(tput sgr0)

        # Solarized colors
        # https://github.com/altercation/solarized/tree/master/iterm2-colors-solarized#the-values

        # Colors
        black="\[$(tput setaf 0)\]"
        red="\[$(tput setaf 1)\]"
        green="\[$(tput setaf 2)\]"
        yellow="\[$(tput setaf 3)\]"
        blue="\[$(tput setaf 4)\]"
        magenta="\[$(tput setaf 5)\]"
        cyan="\[$(tput setaf 6)\]"
        white="\[$(tput setaf 7)\]"

        # Title bar - "user@host: ~"
        title="\u@\h: \w"
        titlebar="\[\033]0;"$title"\007\]"

        # Git branch
        git_branch() {
          git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)\ /';
        }

    else

        bold=''
        reset="\e[0m"

        black="\e[1;30m"
        blue="\e[1;34m"
        cyan="\e[1;36m"
        green="\e[1;32m"
        orange="\e[1;33m"
        purple="\e[1;35m"
        red="\e[1;31m"
        white="\e[1;37m"
        yellow="\e[1;33m"

    fi


    # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    # Prompt Statement variables
    # http://ss64.com/bash/syntax-prompt.html

    # ------------------------------------------------------------------
    # | PS1 - Default interactive prompt                               |
    # ------------------------------------------------------------------

    # PS1="\[\033]0;\w\007\]"         # Terminal title (set to the
    #                                 # current working directory)
    # PS1+="\[$bold\]"
    # PS1+="\[$orange\]\u"            # Username
    # PS1+="\[$white\]@"
    # PS1+="\[$yellow\]\h"            # Host
    # PS1+="\[$white\]: "
    # PS1+="\[$green\]\w"             # Working directory
    # PS1+="\$(get_git_repository_details \"$white on $cyan\")"
    # PS1+="\n"
    # PS1+="\[$reset$white\]\$ \[$reset\]"
    #
    # export PS1

    # Clear attributes
    clear_attributes="\[$(tput sgr0)\]"

    # Custom bash prompt - "➜  ~ (master) "
    export PS1="\[$bold\] ${titlebar}${green}➜ ${blue}\u${white}@${red}\h ${yellow}\w ${cyan}\$(git_branch)${clear_attributes}"

    # ------------------------------------------------------------------
    # | PS2 - Continuation interactive prompt                          |
    # ------------------------------------------------------------------

    PS2='⚡ '

    export PS2

    # ------------------------------------------------------------------
    # | PS4 - Debug prompt                                             |
    # ------------------------------------------------------------------

    # e.g:
    #
    # The GNU `date` command has the `%N` interpreted sequence while
    # other implementations don't (on OS X `gdate` can be used instead
    # of the native `date` if the `coreutils` package was installed)
    #
    # local dateCmd=""
    #
    # if [ "$(date +%N)" != "N" ] || \
    #    [ ! -x "$(command -v 'gdate')" ]; then
    #    dateCmd="date +%s.%N"
    # else
    #    dateCmd="gdate +%s.%N"
    # fi
    #
    # PS4="+$( tput cr && tput cuf 6 &&
    #          printf "$yellow %s $green%6s $reset" "$($dateCmd)" "[$LINENO]" )"
    #
    # PS4 output:
    #
    #   ++    1357074705.875970000  [123] '[' 1 == 0 ']'
    #   └──┬─┘└────┬───┘ └───┬───┘ └──┬─┘ └──────┬─────┘
    #      │       │         │        │          │
    #      │       │         │        │          └─ command
    #      │       │         │        └─ line number
    #      │       │         └─ nanoseconds
    #      │       └─ seconds since 1970-01-01 00:00:00 UTC
    #      └─ depth-level of the subshell

    PS4="+$( tput cr && tput cuf 6 && printf "%s $reset" )"

    export PS4

}

# ----------------------------------------------------------------------
# | Main                                                               |
# ----------------------------------------------------------------------

main() {
    enable_color_support
    set_ls_colors
    set_prompts
}

main

# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

# Unset anything that just pollutes the global space

unset -f enable_color_support
unset -f main
unset -f set_ls_colors
unset -f set_prompts
	#!/bin/bash

	source "$(dirname $(readlink $BASH_SOURCE))/../os/utils.sh"

	# ----------------------------------------------------------------------
	# \| Colors \|
	# ----------------------------------------------------------------------

	enable_color_support() {

	declare OS="$(get_os)"

	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	if [[ $COLORTERM == gnome-* && $TERM == xterm ]] \
	&& infocmp xterm-256color &> /dev/null; then
	export TERM='xterm-256color'
	elif infocmp xterm-256color &> /dev/null; then
	export TERM='xterm-256color'
	fi

	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	if [ "$OS" == 'osx' ]; then
	alias ls='ls -G' # or CLICOLOR=1
	elif [ "$OS" == 'ubuntu' ]; then
	if [ -x /usr/bin/dircolors ]; then

	test -r ~/.dircolors \
	&& eval "$(dircolors -b ~/.dircolors)" \
	\|\| eval "$(dircolors -b)"

	alias dir='dir --color=auto'
	alias egrep='egrep --color=auto'
	alias fgrep='fgrep --color=auto'
	alias grep='grep --color=auto'
	alias ls='ls -F --color=auto'
	alias vdir='vdir --color=auto'

	fi
	fi

	}

	set_ls_colors() {

	declare OS="$(get_os)"

	# There are several different implementations of color for ls:

	# ------------------------------------------------------------------
	# \| FreeBSD / OS X \|
	# ------------------------------------------------------------------

	# - `ls` displays colors if the `-G` option is passed or if
	# the `CLICOLOR` environment variable is set
	#
	# - the actual colors are configured through the `LSCOLORS`
	# environment variable (built-in defaults are used if this
	# variable is not set)

	if [ "$OS" == 'osx' ]; then

	LSCOLORS=''

	LSCOLORS+='gx' # Directory
	LSCOLORS+='fx' # Symbolic link
	LSCOLORS+='cx' # Socket
	LSCOLORS+='dx' # Pipe
	LSCOLORS+='cx' # Executable
	LSCOLORS+='eg' # Block special
	LSCOLORS+='ed' # Character special
	LSCOLORS+='ab' # Executable with setuid bit set
	LSCOLORS+='ag' # Executable with setgid bit set
	LSCOLORS+='cc' # Directory writable to others, with sticky bit
	LSCOLORS+='bd' # Directory writable to others, without sticky bit

	export LSCOLORS

	# ------------------------------------------------------------------
	# \| GNU \|
	# ------------------------------------------------------------------

	# - `ls` displays colors if the `--color` option is passed
	#
	# - the actual colors are configured through the `LS_COLORS`
	# environment variable (built-in defaults are used if this
	# variable is not set)

	elif [ "$OS" == 'ubuntu' ]; then

	LS_COLORS=''

	LS_COLORS+='no=1;39:' # global default
	LS_COLORS+='di=1;36:' # directory
	LS_COLORS+='ex=1;32:' # executable file
	LS_COLORS+='fi=1;39:' # file
	LS_COLORS+='ec=:' # non-filename text
	LS_COLORS+='mi=1;31:' # non-existent file pointed to by a symlink
	LS_COLORS+='ln=target:' # symbolic link
	LS_COLORS+='or=31;01' # symbolic link pointing to a non-existent file

	export LS_COLORS

	fi
	}

	# ----------------------------------------------------------------------
	# \| Prompts \|
	# ----------------------------------------------------------------------

	# Note: Don't break this function into smaller, more specialized ones
	# as you will only pollute the global space even more (this function
	# cannot be unset due to the fact that it's called every time the prompt
	# string is shown)

	get_git_repository_details() {

	local branchName=''
	local tmp=''

	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	# Check if the current directory is in a Git repository
	[ "$(git rev-parse &>/dev/null; printf $?)" -ne 0 ] && return

	# Check if in `.git/` directory (some of the following
	# checks don't make sense/won't work in the `.git` directory)
	[ "$(git rev-parse --is-inside-git-dir)" == "true" ] && return

	# Check for uncommitted changes in the index
	if ! $(git diff --quiet --ignore-submodules --cached); then
	tmp="$tmp+";
	fi

	# Check for unstaged changes
	if ! $(git diff-files --quiet --ignore-submodules --); then
	tmp="$tmp!";
	fi

	# Check for untracked files
	if [ -n "$(git ls-files --others --exclude-standard)" ]; then
	tmp="$tmp?";
	fi

	# Check for stashed files
	if $(git rev-parse --verify refs/stash &>/dev/null); then
	tmp="$tmp$";
	fi

	[ -n "$tmp" ] && tmp=" [$tmp]"


	branchName="$( printf "$( git rev-parse --abbrev-ref HEAD 2> /dev/null \
	\|\| git rev-parse --short HEAD 2> /dev/null \
	\|\| printf " (unknown)" )" \| tr -d "\n" )"


	printf "%s" "$1$branchName$tmp"

	}

	set_prompts() {

	local black='' blue='' bold='' cyan='' green='' orange='' \
	purple='' red='' reset='' white='' yellow=''

	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	if [ -x /usr/bin/tput ] && tput setaf 1 &> /dev/null; then

	tput sgr0 # Reset colors


	bold=$(tput bold)
	reset=$(tput sgr0)

	# Solarized colors
	# https://github.com/altercation/solarized/tree/master/iterm2-colors-solarized#the-values

	# Colors
	black="\[$(tput setaf 0)\]"
	red="\[$(tput setaf 1)\]"
	green="\[$(tput setaf 2)\]"
	yellow="\[$(tput setaf 3)\]"
	blue="\[$(tput setaf 4)\]"
	magenta="\[$(tput setaf 5)\]"
	cyan="\[$(tput setaf 6)\]"
	white="\[$(tput setaf 7)\]"

	# Title bar - "user@host: ~"
	title="\u@\h: \w"
	titlebar="\[\033]0;"$title"\007\]"

	# Git branch
	git_branch() {
	git branch 2> /dev/null \| sed -e '/^[^]/d' -e 's/ \(.*\)/(\1)\ /';
	}

	else

	bold=''
	reset="\e[0m"

	black="\e[1;30m"
	blue="\e[1;34m"
	cyan="\e[1;36m"
	green="\e[1;32m"
	orange="\e[1;33m"
	purple="\e[1;35m"
	red="\e[1;31m"
	white="\e[1;37m"
	yellow="\e[1;33m"

	fi


	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	# Prompt Statement variables
	# http://ss64.com/bash/syntax-prompt.html

	# ------------------------------------------------------------------
	# \| PS1 - Default interactive prompt \|
	# ------------------------------------------------------------------

	# PS1="\[\033]0;\w\007\]" # Terminal title (set to the
	# # current working directory)
	# PS1+="\[$bold\]"
	# PS1+="\[$orange\]\u" # Username
	# PS1+="\[$white\]@"
	# PS1+="\[$yellow\]\h" # Host
	# PS1+="\[$white\]: "
	# PS1+="\[$green\]\w" # Working directory
	# PS1+="\$(get_git_repository_details \"$white on $cyan\")"
	# PS1+="\n"
	# PS1+="\[$reset$white\]\$ \[$reset\]"
	#
	# export PS1

	# Clear attributes
	clear_attributes="\[$(tput sgr0)\]"

	# Custom bash prompt - "➜ ~ (master) "
	export PS1="\[$bold\] ${titlebar}${green}➜ ${blue}\u${white}@${red}\h ${yellow}\w ${cyan}\$(git_branch)${clear_attributes}"

	# ------------------------------------------------------------------
	# \| PS2 - Continuation interactive prompt \|
	# ------------------------------------------------------------------

	PS2='⚡ '

	export PS2

	# ------------------------------------------------------------------
	# \| PS4 - Debug prompt \|
	# ------------------------------------------------------------------

	# e.g:
	#
	# The GNU `date` command has the `%N` interpreted sequence while
	# other implementations don't (on OS X `gdate` can be used instead
	# of the native `date` if the `coreutils` package was installed)
	#
	# local dateCmd=""
	#
	# if [ "$(date +%N)" != "N" ] \|\| \
	# [ ! -x "$(command -v 'gdate')" ]; then
	# dateCmd="date +%s.%N"
	# else
	# dateCmd="gdate +%s.%N"
	# fi
	#
	# PS4="+$( tput cr && tput cuf 6 &&
	# printf "$yellow %s $green%6s $reset" "$($dateCmd)" "[$LINENO]" )"
	#
	# PS4 output:
	#
	# ++ 1357074705.875970000 [123] '[' 1 == 0 ']'
	# └──┬─┘└────┬───┘ └───┬───┘ └──┬─┘ └──────┬─────┘
	# │ │ │ │ │
	# │ │ │ │ └─ command
	# │ │ │ └─ line number
	# │ │ └─ nanoseconds
	# │ └─ seconds since 1970-01-01 00:00:00 UTC
	# └─ depth-level of the subshell

	PS4="+$( tput cr && tput cuf 6 && printf "%s $reset" )"

	export PS4

	}

	# ----------------------------------------------------------------------
	# \| Main \|
	# ----------------------------------------------------------------------

	main() {
	enable_color_support
	set_ls_colors
	set_prompts
	}

	main

	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	# Unset anything that just pollutes the global space

	unset -f enable_color_support
	unset -f main
	unset -f set_ls_colors
	unset -f set_prompts
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