open_reference

#!/usr/bin/env bash
# Program to display list of references in a user-specified folder, choose one from it and open it.

# An array of folders of interest. Each entry must be of the form
# folder_shortname - full/path/to/folder
declare -a folders=(
"references - /home/bharath/Desktop/a-tale-of-two-dead-stars/references"
"misc_reading - /home/bharath/Desktop/misc_reading"
)

while [ -z "$folder" ]
do
	folderchoice=$(printf '%s\n' "${folders[@]}" | dmenu -i -c -bw 2 -l 20 -p 'Choose head folder:') || exit
	folderpath=$(echo "$folderchoice" | awk '{print $NF}')
	folder=$(echo "$folderchoice" | awk '{print $1}')
done

reference=$(ls $folderpath/*.pdf $folderpath/*.djvu | sed "s:/.*/::g" | dmenu -i -bw 2 -c -l 20 -g 2 -p "Choose reference from ${folder}:")

# If no file chosen, exit quietly.
[ -z "$reference" ] && exit

# If file chosen exists, open and exit.
[ -e "$folderpath/$reference" ] && (zathura "$folderpath/$reference" &) && exit

# If file chosen doesn't exist, complain and exit.
[ ! -e "$folderpath/$reference" ] && echo "Error: "$reference" not found!" && exit 1