This script actually used for massive changing name and url of ~/.local/share/okular/docdata/*.pdf.xml files

okular-docdata-restore.sh

#!/usr/bin/env sh

echo ${1:?Destination path is not specified}

export filenames=$(ls -1 $1)
export IFS=$'\n'

function main () {
	export previus_href
	export previus_input
	for filename in $filenames; do
		export filepath=$1'/'$filename
		export href=$(cat $filepath | grep '<documentInfo' | cut -d '"' -f 2)
		# path_to_file -> inner_href_the_file
		echo "Current line:>${filename} -> ${href}"
		
		if [[ "$href" == "$previus_href" ]]; then
			printf "Automatic changing for: %s"$href
			echo
			sed -i "s,$previus_href,$previus_input,g" $filepath
		else
			if [ $(echo $href | grep -o "DELETED|" | wc -m) -ne 0 ]; then
				echo "Marked as deleted. Passing..."
				continue
			elif [ $(echo $href | egrep "Education" | wc -m) -ge 3 ]; then
				echo "Have changed. Passing..."
				continue
			else 
				printf "Change for: %s"$href
				echo
				printf ">"
				read new_href
				if [ $(echo $new_href | wc -m) -eq 1 ]; then
					echo "Passed by a user..."
					continue
				elif [[ $new_href == "del" ]]; then
					echo "Marking as DELETED..."
					export replace_string="DELETED|"$href
					sed -i "s,$href,$replace_string,g" $filepath
				else
					echo "Replacing specified href..."
					sed -i "s,$href,$new_href,g" $filepath
				fi
				export previus_input=$new_href
			fi
		fi
		export previus_href=$href
		echo "================================================================"
	done
}

main $1