backup

#! /usr/bin/zsh

# 2023/07/28
# andyp3r3z
#
# This reads the file `~/.backupfiles` and copies it to a a path.

# 0. Setup variables and functions
file="$HOME/.backupfiles"
user=$(whoami)
target=$1

# 1. Make sure the file exists and it is not empty.
if [ ! -f "$file" ]; then
	echo "File \`.backupfiles\` does not exist.\nMake sure to create it with the paths you want to backup."
	exit 1
fi
if [ ! -s "$file" ]; then
	echo "\`.backupfiles\` is empty."
	exit 1
fi

# 2. Make sure the target directory exists
if [ ! -d "$1" ]; then
	echo "Target dir not valid: $1.\nPlease specify a valid directory to copy the files."
	exit 1
fi

# 3. Read all lines and copy to desired path.
IFS=$'\n\n'
for l in $(cat $file); do
	# 3.0. Process comments and blank lines.
	if [ "${l#*"#"}" != "$l" ]; then continue; fi
	if [ "$l" = "" ]; then continue; fi
	origin="${l//\~/$HOME}"
	# 3.1. Process directories.
	if [ -d "$origin" ]; then 
		option="-r"
	# 3.2. Process files
	elif [ -f "$origin" ]; then 
		option=""
	# 3.3. Not a real path
	else
		echo "Path not found: $l"
		read
		continue
	fi
	# 3.4. Create the needed folders
	destination="${origin//$HOME/$target}"
	destinationfolder=$(dirname $destination) # printf "$destination, $destinationfolder" >&2
	if [ ! -d "$destinationfolder" ]; then mkdir -p $destinationfolder; fi	
	# 3.5 Copy
	cp $option $origin $destination
	echo "$origin copied succesfully."
done

echo "done"