#!/bin/sh
# biber2txt bibfile.bib keys... - display bibliography entries as plain text

# Needs pandoc, pandoc-citeproc and jq
# Recommended: install https://raw.githubusercontent.com/citation-style-language/styles/master/journal-of-applied-philosophy.csl as ~/.pandoc/default.csl

bibfile=${1?Usage: $0 bibfile.bib keys...}
shift

if [ "$#" -eq 0 ]; then
	IFS='
'
	set -- $(pandoc-citeproc -j "$bibfile" | jq -r '.[].id')
fi

printf '[@%s]\n' "$@" |
pandoc --bibliography "$bibfile" --standalone --to plain |
awk 'NR!=FNR {exit}
     NR==1,/^$/{next}
     /^\[[0-9]*\]/ {$1 = "[" ARGV[+substr($1,2)+2] "]"}
     {print}' - "$0" "$@" |
fmt