plugin.shell

################################################################################
# Plugin     : bash-git
# Author     : Justin Francis
#              (c) Copyright 2012
# Created    : March 3, 2012
# Source URL : https://github.com/comwt/bash-git
#
# Purpose    : Provides a Git information bar (info bar) when you are under
#              a git repository.  It displays the following information:
#                - current branch (in 'red' if on main or master)
#                - current cksum (in 'red' if there are uncommitted changes
#                  and displays an 'uncommitted changes' message in the message
#                  area)
#                - stash count in the message area if you have stashes
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
################################################################################
function Func_GitCheck {

    l_git_branch=$(__git_ps1 | awk -F\( '{print $2}' | awk -F\) '{print $1}')

    if [[ ${l_git_branch} == "" ]]; then
        return
    fi

    l_hlt="\033[30;47m" #(highlight)    white background/black foreground
    l_inf="\033[31m"    #(message info) red foreground
    l_int="\033[1m"     #(intensity)    intensifies foreground
    l_blufg="\033[34;47m"    #(normal info)  blue foreground
    l_blubg="\033[37;44m"    #(normal info)  blue background
    l_maj="\033[41;37m" #(major info)   red background/white foreground
    l_rst="\033[m"     #(reset)        original terminal colors
    l_msg=

    if [[ ${l_git_branch} == "main" || ${l_git_branch} == "master" || ${l_git_branch} == "GIT_DIR!" ]]; then
        l_git_branch="${l_maj}${l_git_branch}${l_hlt}"
    else
        l_git_branch="${l_blufg}${l_git_branch}${l_hlt}"
    fi

    l_git_sha1=$(git branch --verbose 2>/dev/null|awk '$1 == "*" {print $3}')

    if [[ ${l_git_sha1} == "" ]]; then
        l_git_sha1 = 'stateless'
    fi

    #- If you need more speedy responses on large repositories, this is where
    #  you need to look.  git status takes much longer than the other commands.
    #- The --porcelain option to 'git status' was added in version 1.7.0.
    #---------------------------------------------------------------------------
    git version 2>/dev/null | grep -c -E "version (0|1\.[0123456])" 1>/dev/null 2>&1
    l_use_porcelain_TF=$?
    if [[ ${l_use_porcelain_TF} ]]; then
        l_changes=$(git status --porcelain 2>/dev/null | wc -l)
    else
        l_changes=$(git status 2>/dev/null | awk '/^#\t/ {print}' 2>/dev/null | wc -l)
    fi
    if [[ ${l_changes} -ne 0 ]]; then
        l_git_sha1="${l_maj}${l_git_sha1}${l_hlt}"
        l_msg="${l_msg} / ${l_changes} uncommitted"
        if [[ ${l_changes} -eq 1 ]]; then
            l_msg="${l_msg} change"
        else
            l_msg="${l_msg} changes"
        fi
    else
        l_git_sha1="${l_blufg}${l_git_sha1}${l_hlt}"
    fi

    l_msg="${l_inf}${l_msg}"

    l_stash=$(git stash list 2>&1 3>&1)
    if [[ $(echo ${l_stash} | grep -c "fatal.*working tree") -eq 0 && $l_stash != "" ]]; then
        l_stash_cnt=$(echo ${l_stash} | wc -l | awk '{print $NF}')
        if [[ ${l_stash_cnt} -gt 0 ]]; then
            l_msg="${l_msg} / ${l_int}${l_blubg}STASHES: ${l_stash_cnt}${l_blufg}"
        fi
    fi

    #- Print the 'Info Bar'
    #-----------------------
    l_columns=
    if [[ ${COLUMNS} != "" ]]; then
        l_columns=${COLUMNS}
    else
        l_columns=0
    fi
    echo
    if [[ ! ${OS} ]]; then
        printf "${l_hlt}"; printf -vch "%${COLUMNS}s" "" 2>/dev/null; printf "%s" "${ch// / }"; printf "${l_rst}\r"
    fi
    printf "${l_hlt}  ${l_int}BRANCH:${l_rst}${l_hlt} ${l_git_branch}  (${l_git_sha1})${l_msg}  ${l_rst}\n\$ "

}

export COLUMNS
PS1="${PS1}\$(Func_GitCheck)"