bxcp

#!/bin/bash
# bxcp
#
# Author: William T. Hollingsworth
# Last Revision: 28.10.2020
# Usage: bxcp <source> <destination>
#
# Description:
# Given a source directory that contains a set of zip archives, extract a copy
# of the contents to a destination directory.  A folder will be created for each
# archive using the basename of the archive.
#
# Revision History:
# 28.10.2020
# - Inital version.

if [ $# -ne 2 ]
then
    echo "usage: bxcp <source> <destination>"
    exit 2
fi

# for consistentcy with ${dest} below
if [ ! -d "$1" ]
then
    echo "\"$1\" is not a valid directory"
    exit 2
fi
src=$(realpath $1)

# we're going to pushd into ${src}, so we need an absolute path for this
if [ ! -d "$2" ]
then
    echo "\"$2\" is not a valid directory"
    exit 2
fi
dest=$(realpath $2)

# get all of the submissions for that block
pushd "${src}" > /dev/null 2>&1
for zipfile in *.zip
do
    # find the location of the first . character to get the basename
    # `basename` tries to do this but doesn't play nice with things
    # like ".zip.zip"
    ext_index=$(expr index "${zipfile}" ".")
    filename=${zipfile:0:${ext_index}-1}

    # construct the path of the extraction directory
    extract_dir="${dest}/${filename}"
    if [ ! -d "${extract_dir}" ]
    then
        mkdir --parents "${extract_dir}"
    fi

    # extract the archive
    # -o will overwrite existing files!  This is not ideal, but MinGW's unzip
    # is not compiled with support for any option that will allow renaming
    echo "extracting the contents of \"${zipfile}\" to \"${extract_dir}\"..."
    unzip -q -o "${zipfile}" -d "${extract_dir}"
done
popd > /dev/null 2>&1