nightly_build.sh

#! /usr/bin/env sh
# Copyright (C) 2021 Nathan Paul Simons (2hmuFQDSHf-code@hardcorehackers.com)
#
# 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 3 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, see <https://www.gnu.org/licenses/>.

# Intended to be run nightly, eg in cron:
# m h  dom mon dow   command
# 0 0  *   *   *     $HOME/Projects/$PROJNAME/nightly_build.sh

# Debugging/error checking options; see the bash manual page for details.

# Set the prompt for trace output.
# This sets the execution trace prompt string (PS4) to the program name
# ($0), "line" and line number ($LINENO) within the program.
if test ${LINENO:-set} != set; then
    PS4='$0 line $LINENO: '
else
    PS4='$0: '
fi

# Print shell input lines as they are read.
set -o verbose

# Print expanded commands.
set -o xtrace

# Exit immediately if a simple command fails.
set -o errexit

# Don't overwrite existing files.
# NOTE: this only applies to shell-script things like redirection; the
# executables called below will still be able to overwrite files.
set -o noclobber

# Treat unset variables as an error.
set -o nounset

# Fail if any command in a pipeline fails; non-POSIX shell extension.
if test ${BASH_VERSION:-set} != set; then
    set -o pipefail
fi

umask 0077
YEAR="`date +'%Y'`"
MONTH="`date +'%m'`"
DAY="`date +'%d'`"
DATE="$YEAR-$MONTH-$DAY"

GITREPO_URI="file:///path/to/repos"
PROJNAME="__TEMPLATE__"
BASEDIRNAME="$PROJNAME-$DATE"
TOPLEVEL="`mktemp -d`"
TMPDIRNAME="$TOPLEVEL/$BASEDIRNAME"
mkdir --parent $TMPDIRNAME;
cd $TMPDIRNAME

# Build and test the $PROJNAME library and unit tests and run them.
git clone --quiet $GITREPO_URI/$PROJNAME/
cd $PROJNAME
sh ./run_tests.sh
cd ../

# Make a backup of this repository and build.
BACKUPDIR="$HOME/Backups/nightly_builds/$YEAR/$MONTH/$DAY"
mkdir \
    --parent \
    $BACKUPDIR
mv \
    --interactive \
    --verbose \
    $PROJNAME \
    $BACKUPDIR/
chmod \
    --recursive \
    --verbose \
    ugo-w \
    $BACKUPDIR/$PROJNAME

cd /
rm -Rf $TOPLEVEL

# Local Variables:
#   mode: Shell-Script
#   sh-indentation: 4
#   indent-tabs-mode: nil
#   sh-basic-offset: 4
# End:
# vi: fileformat=unix filetype=sh shiftwidth=4 tabstop=4 expandtab