419 lines
13 KiB
Bash
419 lines
13 KiB
Bash
source /etc/profile
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export PATH=$PATH:~/.local/bin
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#!/bin/sh
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## +-----------------------------------+-----------------------------------+
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## | |
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## | FANCY BASH PROMT |
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## | |
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## | Copyright (c) 2018, Andres Gongora <mail@andresgongora.com>. |
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## | |
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## | This program is free software: you can redistribute it and/or modify |
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## | it under the terms of the GNU General Public License as published by |
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## | the Free Software Foundation, either version 3 of the License, or |
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## | (at your option) any later version. |
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## | |
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## | This program is distributed in the hope that it will be useful, |
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## | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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## | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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## | GNU General Public License for more details. |
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## | |
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## | You should have received a copy of the GNU General Public License |
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## | along with this program. If not, see <http://www.gnu.org/licenses/>. |
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## | |
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## +-----------------------------------------------------------------------+
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##
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## DESCRIPTION:
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## This script updates your "PS1" environment variable to display colors.
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## Addicitionally, it also shortens the name of your current part to maximum
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## 25 characters, which is quite useful when working in deeply nested folders.
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##
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##
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##
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## INSTALLATION:
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## Copy this script to your home folder and rename it to ".fancy-bash-promt.sh"
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## Run this command from any terminal:
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## echo "source ~/.fancy-bash-promt.sh" >> ~/.bashrc
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##
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## Alternatively, copy the content of this file into your .bashrc file
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##
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##
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##
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## FUNCTIONS:
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##
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## * bash_prompt_command()
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## This function takes your current working directory and stores a shortened
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## version in the variable "NEW_PWD".
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##
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## * format_font()
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## A small helper function to generate color formating codes from simple
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## number codes (defined below as local variables for convenience).
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##
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## * bash_prompt()
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## This function colorizes the bash promt. The exact color scheme can be
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## configured here. The structure of the function is as follows:
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## 1. A. Definition of available colors for 16 bits.
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## 1. B. Definition of some colors for 256 bits (add your own).
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## 2. Configuration >> EDIT YOUR PROMT HERE<<.
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## 4. Generation of color codes.
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## 5. Generation of window title (some terminal expect the first
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## part of $PS1 to be the window title)
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## 6. Formating of the bash promt ($PS1).
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##
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## * Main script body:
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## It calls the adequate helper functions to colorize your promt and sets
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## a hook to regenerate your working directory "NEW_PWD" when you change it.
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##
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################################################################################
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## FUNCTIONS ##
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################################################################################
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##
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## ARRANGE $PWD AND STORE IT IN $NEW_PWD
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## * The home directory (HOME) is replaced with a ~
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## * The last pwdmaxlen characters of the PWD are displayed
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## * Leading partial directory names are striped off
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## /home/me/stuff -> ~/stuff (if USER=me)
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## /usr/share/big_dir_name -> ../share/big_dir_name (if pwdmaxlen=20)
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##
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## Original source: WOLFMAN'S color bash promt
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## https://wiki.chakralinux.org/index.php?title=Color_Bash_Prompt#Wolfman.27s
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##
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bash_prompt_command() {
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# How many characters of the $PWD should be kept
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local pwdmaxlen=25
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# Indicate that there has been dir truncation
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local trunc_symbol=".."
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# Store local dir
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local dir=${PWD##*/}
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# Which length to use
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pwdmaxlen=$(( ( pwdmaxlen < ${#dir} ) ? ${#dir} : pwdmaxlen ))
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NEW_PWD=${PWD/#$HOME/\~}
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local pwdoffset=$(( ${#NEW_PWD} - pwdmaxlen ))
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# Generate name
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if [ ${pwdoffset} -gt "0" ]
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then
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NEW_PWD=${NEW_PWD:$pwdoffset:$pwdmaxlen}
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NEW_PWD=${trunc_symbol}/${NEW_PWD#*/}
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fi
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}
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##
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## GENERATE A FORMAT SEQUENCE
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##
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format_font()
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{
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## FIRST ARGUMENT TO RETURN FORMAT STRING
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local output=$1
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case $# in
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2)
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eval $output="'\[\033[0;${2}m\]'"
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;;
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3)
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eval $output="'\[\033[0;${2};${3}m\]'"
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;;
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4)
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eval $output="'\[\033[0;${2};${3};${4}m\]'"
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;;
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*)
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eval $output="'\[\033[0m\]'"
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;;
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esac
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}
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##
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## COLORIZE BASH PROMT
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##
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bash_prompt() {
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############################################################################
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## COLOR CODES ##
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## These can be used in the configuration below ##
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############################################################################
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## FONT EFFECT
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local NONE='0'
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local BOLD='1'
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local DIM='2'
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local UNDERLINE='4'
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local BLINK='5'
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local INVERT='7'
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local HIDDEN='8'
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## COLORS
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local DEFAULT='9'
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local BLACK='0'
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local RED='1'
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local GREEN='2'
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local YELLOW='3'
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local BLUE='4'
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local MAGENTA='5'
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local CYAN='6'
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local L_GRAY='7'
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local D_GRAY='60'
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local L_RED='61'
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local L_GREEN='62'
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local L_YELLOW='63'
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local L_BLUE='64'
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local L_MAGENTA='65'
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local L_CYAN='66'
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local WHITE='67'
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## TYPE
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local RESET='0'
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local EFFECT='0'
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local COLOR='30'
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local BG='40'
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## 256 COLOR CODES
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local NO_FORMAT="\[\033[0m\]"
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local ORANGE_BOLD="\[\033[1;38;5;208m\]"
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local TOXIC_GREEN_BOLD="\[\033[1;38;5;118m\]"
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local RED_BOLD="\[\033[1;38;5;1m\]"
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local CYAN_BOLD="\[\033[1;38;5;87m\]"
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local BLACK_BOLD="\[\033[1;38;5;0m\]"
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local WHITE_BOLD="\[\033[1;38;5;15m\]"
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local GRAY_BOLD="\[\033[1;90m\]"
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local BLUE_BOLD="\[\033[1;38;5;74m\]"
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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## CONFIGURE HERE ##
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############################################################################
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## CONFIGURATION ##
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## Choose your color combination here ##
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############################################################################
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local FONT_COLOR_1=$WHITE
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local BACKGROUND_1=$BLUE
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local TEXTEFFECT_1=$BOLD
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local FONT_COLOR_2=$WHITE
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local BACKGROUND_2=$L_BLUE
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local TEXTEFFECT_2=$BOLD
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local FONT_COLOR_3=$D_GRAY
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local BACKGROUND_3=$WHITE
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local TEXTEFFECT_3=$BOLD
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local PROMT_FORMAT=$BLUE_BOLD
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############################################################################
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## EXAMPLE CONFIGURATIONS ##
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## I use them for different hosts. Test them out ;) ##
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############################################################################
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## CONFIGURATION: BLUE-WHITE
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if [ "$HOSTNAME" = dell ]; then
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FONT_COLOR_1=$WHITE; BACKGROUND_1=$BLUE; TEXTEFFECT_1=$BOLD
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FONT_COLOR_2=$WHITE; BACKGROUND_2=$L_BLUE; TEXTEFFECT_2=$BOLD
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FONT_COLOR_3=$D_GRAY; BACKGROUND_3=$WHITE; TEXTEFFECT_3=$BOLD
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PROMT_FORMAT=$CYAN_BOLD
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fi
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## CONFIGURATION: BLACK-RED
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if [ "$HOSTNAME" = giraff6 ]; then
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FONT_COLOR_1=$WHITE; BACKGROUND_1=$BLACK; TEXTEFFECT_1=$BOLD
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FONT_COLOR_2=$WHITE; BACKGROUND_2=$D_GRAY; TEXTEFFECT_2=$BOLD
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FONT_COLOR_3=$WHITE; BACKGROUND_3=$RED; TEXTEFFECT_3=$BOLD
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PROMT_FORMAT=$RED_BOLD
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fi
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## CONFIGURATION: RED-BLACK
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#FONT_COLOR_1=$WHITE; BACKGROUND_1=$RED; TEXTEFFECT_1=$BOLD
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#FONT_COLOR_2=$WHITE; BACKGROUND_2=$D_GRAY; TEXTEFFECT_2=$BOLD
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#FONT_COLOR_3=$WHITE; BACKGROUND_3=$BLACK; TEXTEFFECT_3=$BOLD
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#PROMT_FORMAT=$RED_BOLD
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## CONFIGURATION: CYAN-BLUE
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if [ "$HOSTNAME" = sharkoon ]; then
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FONT_COLOR_1=$BLACK; BACKGROUND_1=$L_CYAN; TEXTEFFECT_1=$BOLD
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FONT_COLOR_2=$WHITE; BACKGROUND_2=$L_BLUE; TEXTEFFECT_2=$BOLD
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FONT_COLOR_3=$WHITE; BACKGROUND_3=$BLUE; TEXTEFFECT_3=$BOLD
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PROMT_FORMAT=$CYAN_BOLD
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fi
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## CONFIGURATION: GRAY-SCALE
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if [ "$HOSTNAME" = giraff ]; then
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FONT_COLOR_1=$WHITE; BACKGROUND_1=$BLACK; TEXTEFFECT_1=$BOLD
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FONT_COLOR_2=$WHITE; BACKGROUND_2=$D_GRAY; TEXTEFFECT_2=$BOLD
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FONT_COLOR_3=$WHITE; BACKGROUND_3=$L_GRAY; TEXTEFFECT_3=$BOLD
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PROMT_FORMAT=$BLACK_BOLD
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fi
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## CONFIGURATION: GRAY-CYAN
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if [ "$HOSTNAME" = light ]; then
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FONT_COLOR_1=$WHITE; BACKGROUND_1=$BLACK; TEXTEFFECT_1=$BOLD
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FONT_COLOR_2=$WHITE; BACKGROUND_2=$D_GRAY; TEXTEFFECT_2=$BOLD
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FONT_COLOR_3=$BLACK; BACKGROUND_3=$L_CYAN; TEXTEFFECT_3=$BOLD
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PROMT_FORMAT=$CYAN_BOLD
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fi
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
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############################################################################
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## TEXT FORMATING ##
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## Generate the text formating according to configuration ##
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############################################################################
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## CONVERT CODES: add offset
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FC1=$(($FONT_COLOR_1+$COLOR))
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BG1=$(($BACKGROUND_1+$BG))
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FE1=$(($TEXTEFFECT_1+$EFFECT))
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FC2=$(($FONT_COLOR_2+$COLOR))
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BG2=$(($BACKGROUND_2+$BG))
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FE2=$(($TEXTEFFECT_2+$EFFECT))
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FC3=$(($FONT_COLOR_3+$COLOR))
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BG3=$(($BACKGROUND_3+$BG))
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FE3=$(($TEXTEFFECT_3+$EFFECT))
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FC4=$(($FONT_COLOR_4+$COLOR))
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BG4=$(($BACKGROUND_4+$BG))
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FE4=$(($TEXTEFFECT_4+$EFFECT))
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## CALL FORMATING HELPER FUNCTION: effect + font color + BG color
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local TEXT_FORMAT_1
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local TEXT_FORMAT_2
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local TEXT_FORMAT_3
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local TEXT_FORMAT_4
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format_font TEXT_FORMAT_1 $FE1 $FC1 $BG1
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format_font TEXT_FORMAT_2 $FE2 $FC2 $BG2
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format_font TEXT_FORMAT_3 $FC3 $FE3 $BG3
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format_font TEXT_FORMAT_4 $FC4 $FE4 $BG4
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# GENERATE PROMT SECTIONS
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local PROMT_USER=$"$TEXT_FORMAT_1 \u "
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local PROMT_HOST=$"$TEXT_FORMAT_2 \h "
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local PROMT_PWD=$"$TEXT_FORMAT_3 \${NEW_PWD} "
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local PROMT_INPUT=$"$PROMT_FORMAT "
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############################################################################
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## SEPARATOR FORMATING ##
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## Generate the separators between sections ##
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## Uses background colors of the sections ##
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############################################################################
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## CONVERT CODES
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TSFC1=$(($BACKGROUND_1+$COLOR))
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TSBG1=$(($BACKGROUND_2+$BG))
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TSFC2=$(($BACKGROUND_2+$COLOR))
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TSBG2=$(($BACKGROUND_3+$BG))
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TSFC3=$(($BACKGROUND_3+$COLOR))
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TSBG3=$(($DEFAULT+$BG))
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## CALL FORMATING HELPER FUNCTION: effect + font color + BG color
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local SEPARATOR_FORMAT_1
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local SEPARATOR_FORMAT_2
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local SEPARATOR_FORMAT_3
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format_font SEPARATOR_FORMAT_1 $TSFC1 $TSBG1
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format_font SEPARATOR_FORMAT_2 $TSFC2 $TSBG2
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format_font SEPARATOR_FORMAT_3 $TSFC3 $TSBG3
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# GENERATE SEPARATORS WITH FANCY TRIANGLE
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local TRIANGLE=$'\uE0B0'
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local SEPARATOR_1=$SEPARATOR_FORMAT_1$TRIANGLE
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local SEPARATOR_2=$SEPARATOR_FORMAT_2$TRIANGLE
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local SEPARATOR_3=$SEPARATOR_FORMAT_3$TRIANGLE
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############################################################################
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## WINDOW TITLE ##
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## Prevent messed up terminal-window titles ##
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############################################################################
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case $TERM in
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xterm*|rxvt*)
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local TITLEBAR='\[\033]0;\u:${NEW_PWD}\007\]'
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;;
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*)
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local TITLEBAR=""
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;;
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esac
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############################################################################
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## BASH PROMT ##
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## Generate promt and remove format from the rest ##
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############################################################################
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PS1="$TITLEBAR\n${PROMT_USER}${SEPARATOR_1}${PROMT_HOST}${SEPARATOR_2}${PROMT_PWD}${SEPARATOR_3}${PROMT_INPUT}"
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## For terminal line coloring, leaving the rest standard
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none="$(tput sgr0)"
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trap 'echo -ne "${none}"' DEBUG
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}
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################################################################################
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## MAIN ##
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################################################################################
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## Bash provides an environment variable called PROMPT_COMMAND.
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## The contents of this variable are executed as a regular Bash command
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## just before Bash displays a prompt.
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## We want it to call our own command to truncate PWD and store it in NEW_PWD
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PROMPT_COMMAND=bash_prompt_command
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## Call bash_promnt only once, then unset it (not needed any more)
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## It will set $PS1 with colors and relative to $NEW_PWD,
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## which gets updated by $PROMT_COMMAND on behalf of the terminal
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bash_prompt
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unset bash_prompt
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### EOF ###
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