Commit and push changes on a shared codebase using a single user (used in Cobol mainframes for teams not familiar with Git)

commit.sh

#!/bin/sh

#
# Script to help users in version control in a shared codebase
# and a single user account. It will parse a USERS_FILE to
# fill the proper committer info and push changes. Pull and
# merges are not used. Pushes are forced because the main codebase
# is the work-tree and not the upstream code.
#

function help {
    echo ""
    echo "Usage:"
    echo ""
    echo "List modified files:"
    echo ""
    echo "    commit.sh"
    echo ""
    echo "Commit modified files:"
    echo ""
    echo "    commit.sh [ <username> <file1> <file2> <file3> ... ]"
    echo ""
    echo "Example:"
    echo ""
    echo "    commit.sh carolina /dev/ain/SCF23510.CBL /dev/art/SCF23610.CBL"
    echo ""
    exit
}

# User file with user in each line like "Display Name <email@example.com>":
#
#    Display Name <firstuser@example.com>
#    Other Display Name <otheruser@example.com>
#    Some Other <someother@example.com>
#    (...)
#
USERS_FILE="/cobol/desenv/bin/comita_usuarios.txt"

# Git paths
export GIT="/usr/bin/git --git-dir /codebase/.git --work-tree /codebase"

if [[ -z "$@" ]] ; then
        $GIT status -s
        exit
fi

if [[ -z "$1" ]] || ! grep -q "<$1@" $USERS_FILE ; then
        echo "ERROR: Invalid user."
        ajuda
fi

AUTHOR="`grep "<$1@" $USERS_FILE`"

shift 1

if [[ -z "$@" ]] ; then
        echo "ERROR: No files to commit."
        help
fi

VERSION_BEFORE="`$GIT show-ref --heads -s master`"

$GIT add "$@"
$GIT commit --quiet --verbose --author "$AUTHOR" "$@"

VERSAO_AFTER="`$GIT show-ref --heads -s master`"

if [[ $VERSION_BEFORE != $VERSION_AFTER ]] ; then
    $GIT push --force
fi

# Leave without staging anything
$GIT reset 2>&1 > /dev/null