#!/bin/sh

# Copyright (C) 2004, Thomas Esser. Public domain.
# 2005-03-08: New option "--crop", Rolf Niepraschk. 
# dvips call only if the dvi file exist (RN). 
# 2005-06-27: ps2pdf call only if the ps file exist (RN). 
# 2006-04-05: "\RequirePackage{pst-pdf}" added to the (pdf)LaTeX calls 
#             as suggested by Niall Murphy.
# 2006-07-14: Better temp dir handling (suggested by Karl Berry) (RN).
# 2006-07-23: New option --Xps2pdf and code cleanup (thanks to Karl Berry) (RN).
# 2008-08-04: Remove the parameter "-Ppdf" from the dvips call (RN).
# 2016-07-02: New option "--xelatex",   (hv)
#                        "--lualatex" , (hv)
# 2016-07-11: Better tests if xelatex or lualatex (RN)

# First, work around bugs/limitations in some shells on some systems:
test -f /bin/sh5 && test -z "$RUNNING_SH5" \
  && { UNAMES=`uname -s`; test "x$UNAMES" = xULTRIX; } 2>/dev/null \
  && { RUNNING_SH5=true; export RUNNING_SH5; exec /bin/sh5 $0 ${1+"$@"}; }
unset RUNNING_SH5

test -f /bin/bsh && test -z "$RUNNING_BSH" \
  && { UNAMES=`uname -s`; test "x$UNAMES" = xAIX; } 2>/dev/null \
  && { RUNNING_BSH=true; export RUNNING_BSH; exec /bin/bsh $0 ${1+"$@"}; }
unset RUNNING_BSH

# hack around a bug in zsh:
test -n "${ZSH_VERSION+set}" && alias -g '${1+"$@"}'='"$@"'

###############################################################################
# cleanup()
#   clean up the temp area and exit with proper exit status
###############################################################################
cleanup()
{
  rc=$?
  $needsCleanup && test -n "$tmpdir" && test -d "$tmpdir" \
    && { rm -f "$tmpdir"/*; cd /; rmdir "$tmpdir"; }

  # set exit code in a portable way; see the autoconf manual for details:
  (exit $rc); exit $rc
}

###############################################################################
# setupTmpDir()
#   set up a temp directory and a trap to remove it
###############################################################################
setupTmpDir()
{
  $needsCleanup && return

  trap 'cleanup' 1 2 3 7 13 15
  needsCleanup=true
  (umask 077; mkdir "$tmpdir") \
    || abort "could not create directory \`$tmpdir'"
}
###############################################################################
# myexec(args)
#   execute the command given as "args"; abort on error; redirect messages to
#   log in "silent" mode; redirect stdin (</dev/null) in silent mode
###############################################################################
myexec()
{
  if $silent; then
    echo "$0: running $@"
    "$@" >$log 2>&1 </dev/null
    rc=$?
  else
    "$@"
    rc=$?
  fi
  if test $rc != 0; then
    echo "$0: command $@ returned with code $rc"
    cat <$log
    (exit $rc) # set return value
    cleanup
  fi
}

# some initializations
progname=pdflatexps
silent=true # default setting; change if you like
crop=false
needsCleanup=false
ps2pdf_opts="-dAutoRotatePages=/None"
tmpdir=${TMPDIR-${TEMP-${TMP-/tmp}}}/.$progname$$
log=$tmpdir/log
version="1.0"

## the defaults
ENGINE1=latex
OPTIONS=
ENGINE2=pdflatex
DVIPS=dvips
PS2PDF=ps2pdf
FILE=$1

# look for optional things first
while
  case $1 in
   --help|-h) echo "$0 [-v|-q|--crop|--version|--Xps2pdf OPT] FILE"
              echo "Process LaTeX document FILE using the pst-pdf package,"
              echo "including running latex, dvips, and ps2pdf as necessary."
              echo "--Xps2pdf OPT passes OPT to ps2pdf."
              echo " (-dAutoRotatePages=/None is always passed.)"
              echo "--crop runs pdfcrop on ps2pdf output."
              echo "--lualatex using the luatex engine for .dvi and .pdf" 
              echo "--xelatex using the xetex engine for .xdv and .pdf" 
              exit 0;;
   --version) echo "$progname version $version"; exit 0;;
   --lualatex) ENGINE1=lualatex; 
               OPTIONS="--output-format=dvi"; 
               ENGINE2=lualatex; FILE=$2;;
   --xelatex)  ENGINE1=xelatex;   
               OPTIONS="-no-pdf";              
               ENGINE2=xelatex;  
               DVIPS=xdvipdfmx; FILE=$2;;
   --crop|-c) crop=true;;
   --Xps2pdf|-Xps2pdf) shift; ps2pdf_opts="$ps2pdf_opts $1";;
   -q) silent=true;;
   -v) silent=false;;
    -*) echo "$progname: unknown option $1 ignored";;
    *) break;;
  esac
do
  shift
done

# remaining option: filename
if test -z "$FILE"; then
  echo "$0: no file to process, try --help for more information." >&2
  exit 1
fi

# jobname von TeX: Verzeichnisse entfernen, evtl. vorhandene Extension
# entfernen.
job=`echo "x$1" | sed 's@x@@; s@.*/@@; s@\.[^.]*$@@'`

setupTmpDir
myexec ${ENGINE1} ${OPTIONS} "\AtBeginDocument{\RequirePackage{pst-pdf}} \input{$FILE}"

if test "$ENGINE1" = "latex" || test "$ENGINE1" = "lualatex"; then 
  myexec ${DVIPS} -o "$job-pics.ps" "$job.dvi" 
else
  myexec ${DVIPS} -o "$job-pics.pdf" "$job.xdv"   
fi

test -f "$job-pics.ps" && myexec ${PS2PDF} "$ps2pdf_opts" "$job-pics.ps" "$job-pics.pdf"

if $crop; then
  myexec pdfcrop "$job-pics.pdf" "$job-pics-crop.pdf" 
  mv "$job-pics-crop.pdf" "$job-pics.pdf"
fi
myexec ${ENGINE2} "\AtBeginDocument{\RequirePackage{pst-pdf}} \input{$FILE}"
true
cleanup