#!/bin/bash

function die {
   echo "$1"
   exit 1
}

for i in latex dvips pdflatex pdfcrop ; do
   type -a $i >/dev/null 2>&1
   if [ $? -ne 0 ]; then
      echo "ERROR: $0 requires program: $i"
      exit 1
   fi
done

StartDir=$PWD
for tex in $@ ; do
  b=$(basename ${tex} .tex)
  dir=$(dirname ${tex})
  cd "$dir"
  # Generate EPS first
  latex "$b"
  [ $? -ne 0 ] && die "latex failed"
  dvips -E -o "${b}.eps" "${b}"

  # Generate best possible PDF
  pdflatex "$b"
  [ $? -ne 0 ] && die "pdflatex failed"
  rm -f "${b}-tmp.pdf"
  mv "${b}.pdf" "${b}-tmp.pdf"
  pdfcrop "${b}-tmp.pdf" "${b}.pdf"
  [ $? -eq 0 ] && rm -f "${b}-tmp.pdf"
  rm -f "${b}.aux" "${b}.log"

  cd "${StartDir}"
done
exit 0