#!/bin/sh
# Help function
###############
help () {
    cat <<EOF
Usage: factor-init -o DEST [ OPTION ]

Create an editable image from one of the default images that
is distributed with the Factor runtime.

Options:

  -b         copy the basic image (default)
  -e         copy the extended image (includes contrib libs)
  -i FILE    copy the image FILE
  -o FILE    write the editable image to FILE
  -h         print this help information
EOF
    exit 0
}

# Default values
################
BINARY_PATH='/usr/lib/factor'
SRC="$BINARY_PATH/basic.image"
DST=''

# Argument parsing
##################
while getopts "hbei:o:" x
do
    case "$x" in
        b) SRC="$BINARY_PATH/basic.image";;
        e) SRC="$BINARY_PATH/extended.image";;
        i) SRC="$OPTARG";;
        o) DST="$OPTARG";;
        h) help;;
    esac
done

# Logic
#######
if test -n "$DST"; then
    exec /bin/cp -v "$SRC" "$DST"
else
    help
fi