#!/bin/bash

#Makes the command pretex available which will precompile
#your latex file (such as a header)
#
#Type:
#
#pretex -h 
#
#For Usage options
#
#Author: Cameron Bracken
#
#Last Modified: 2008 Oct 28
#
#Licence: GNU General Public License v3

engine=pdflatex
output=${1%.*}

while getopts o:e:h arg
do  case "$arg" in
    e)  engine="$OPTARG";;
    o)  output=${OPTARG%.*};;
    h)  echo "pretex: A simple utility for precompiling LaTeX Headers.";
        echo "";
        echo "Usage: `basename $0` -h [-e engine] [-o <output base name>] texfile";
        echo "";
        echo "Options:";
        echo "";
        echo "      -e        Specify the name of you favorite LaTeX program (defaults to";
        echo "                  pdflatex).";
        echo "";
        echo "      -o        Specify the basename of your main .tex file (default is to";
        echo "                  append a .fmt to the input basename)";
        echo "";
        echo "      -h        Print out this message.";
        echo "";
        echo "eg.";
        echo "For a main document main.tex and a header file preamble.tex";
        echo "      pretex -o main preamble.tex"
        echo "Then put the line";
        echo "      %&main";
        echo "At the top of main.tex"
        echo "";;
    [?])  echo "Usage: `basename $0` -h [-e engine] [-o <output base name>] texfile";
          echo "try pretex -h for help";
          stop 1;;
    esac
done

shift $(($OPTIND-1))

if [[ -z "$1" ]]
then        # -n tests to see if the argument is non empty
    echo "`basename $0`: no input file"
    echo "try pretex -h for help"
    exit 1
fi


call="$engine -ini -jobname=\"$output\" &$engine\ $1\dump"
echo "executing: $call"
$call