#!/bin/bash
# Copying files contained inside disk images via JSON recipe.
# logo_writerAura Lesse Programmer
# December 12th, 2018
# Is a string contained in another? Return 0 if so; 1 if not.
# By fjarlq, from https://stackoverflow.com/a/8811800/5397930
contains() {
string="$1"
substring="$2"
if test "${string#*$substring}" != "$string"; then
return 0
else
return 1
fi
}
# Obtain the absolute path of a given directory.
# By dogbane, from https://stackoverflow.com/a/3915420
abspath() {
dir="$1"
echo "$(cd "$(dirname "$dir")"; pwd -P)/$(basename "$dir")"
}
# The main script starts here.
# If no first parameter is given, assume current directory.
if [ -z "$1" ]; then
DESTROOT="."
else
# Omit any trailing slash
DESTROOT=$(abspath "${1%/}")
fi
# If no second parameter is given, assume file "steps.json".
# If no first parameter is given, this can't be either.
if [ -z "$2" ]; then
CONF="./steps.json"
else
CONF="$2"
fi
# Create the root directory where the files will the put.
mkdir -p "$DESTROOT"
# How many disks will be processed?
LIMIT=$(cat "$CONF" | jq -r length)
i=0
while [ "$i" -lt "$LIMIT" ]; do
# For each disk, get its file name.
DISK=$(cat "$CONF" | jq -r .["$i"].disk)
echo "$DISK"
# Setup a loop device for the disk and get its name.
RES=$(udisksctl loop-setup -f "$DISK")
LOOP=$(echo "$RES" | cut -f5 -d' ' | head -c -2)
# Using the loop device obtained, mount the disk.
# Obtain the mount root directory afterwards.
RES=$(udisksctl mount -b "$LOOP")
SRCDIR=$(echo "$RES" | sed -nE 's|.*at (.*)\.|\1|p')
# How many file sets will be copied?
NOITEMS=$(cat "$CONF" | jq -r ".["$i"].files | length")
j=0
while [ "$j" -lt "$NOITEMS" ]; do
# For each file set, obtain which files will be copied and where.
FSRC=$(cat "$CONF" | jq -r .["$i"].files["$j"].src)
FDEST=$(cat "$CONF" | jq -r .["$i"].files["$j"].dest)
# Make the destination directory.
mkdir -p "$DESTROOT"/"$FDEST"
echo " ""$FSRC"
if contains "$FSRC" "\*"; then
# If a wildcard is used in the file set, copy by file expansion (option -t).
pushd "$SRCDIR" > /dev/null
cp -t "$DESTROOT"/"$FDEST" $FSRC
popd > /dev/null
else
# Else, copy normally.
cp "$SRCDIR"/"$FSRC" "$DESTROOT"/"$FDEST"
fi
j=$(($j + 1))
done
# Once all the file sets are copied, unmount the disk
# and delete its associated loop device.
udisksctl unmount -b "$LOOP" > /dev/null
udisksctl loop-delete -b "$LOOP"
i=$(($i + 1))
done
[
{
"disk": "disk01.img",
"files": [
{
"src": "*",
"dest": "bin"
}
]
},
{
"disk": "disk02.img",
"files": [
{
"src": "*.EXE",
"dest": "bin"
}
]
},
{
"disk": "disk03.img",
"files": [
{
"src": "LINK.EXE",
"dest": "bin"
},
{
"src": "*.H",
"dest": "include"
},
{
"src": "SYS/*.H",
"dest": "include/sys"
},
{
"src": "SLIBC.LIB",
"dest": "lib"
},
{
"src": "SLIBFP.LIB",
"dest": "lib"
},
{
"src": "EM.LIB",
"dest": "lib"
},
{
"src": "LIBH.LIB",
"dest": "lib"
}
]
}
]
