#!/bin/sh -e
# biber2html bibfile.bib [keys...] - display bibliography entries as HTML

if [ "$#" -eq 0 ]; then
  echo "Usage: biber2html bibfile.bib [keys...]  (default: all)" 1>&2
  exit 111
fi

if ! BIBFILE=$(readlink -e "$1"); then
  echo "bibliography not found: $1" 1>&2
  exit 1
fi

shift
[ "$#" -eq 0 ] && set -- '*'

WRKDIR=$(mktemp -d)
cd $WRKDIR

cat >biber2html.tex <<EOF
\documentclass{minimal}
\usepackage[utf8]{inputenc}
\usepackage[backend=biber,style=alphabetic,sorting=debug]{biblatex}
\DeclareFieldFormat{labelalpha}{\thefield{entrykey}}
\DeclareFieldFormat{extraalpha}{}
\renewcommand*{\mkbibacro}[1]{\MakeUppercase{#1}}
\addbibresource{$BIBFILE}
\makeatletter
\def\blx@shorthands{}
\def\section#1{}
\makeatother
\nocite{$(printf '%s,' "$@" | sed 's:,$::')}
\begin{document}
\printbibliography
\end{document}
EOF

cat >biber2html.cfg <<'EOF'
\Preamble{xhtml,NoFonts,-css,ext=html,charset="utf-8"}
\begin{document}
\EndPreamble
\Configure{emph}{\Protect\HCode{<em>}}{\Protect\HCode{</em>}}
\Configure{textbf}{\Protect\HCode{<strong>}}{\Protect\HCode{</strong>}}
EOF

pdflatex -interaction=nonstopmode -draftmode -halt-on-error biber2html >/dev/null
biber biber2html >/dev/null
pdflatex -interaction=nonstopmode -draftmode -halt-on-error biber2html >/dev/null
htlatex biber2html.tex biber2html.cfg ' -cunihtf -utf8' '-cvalidate' \
	'-interaction=nonstopmode -halt-on-error' >/dev/null

tr -s '\012' ' ' <biber2html.html |
	grep -Po -e '<p class=.*?>\s*\K.*?(?=</p>)|<dt.*?>\s*\K.*?(?=</dt>)' |
	paste - - |
	sed 's:<a[^>]*id=[^>]*></a>::g; s: \?class="url" \?::g;
		s:[ \t][ \t]*: :g;
		s:ff:ff:g; s:fi:fi:g; s:ffi:ffi:g; s:fl:fl:g; s:&#x2019;:’:g'

echo $WRKDIR
#rm -r "$WRKDIR"