#!/bin/bash

# Paul Jolly <paul@myitcv.org.uk>
#
# makelatex
#
# Usage:
#
#	makelatex [root_tex_file.tex] make_arg1 make_arg2 ...
#
# As indicated, the root_tex_file.tex argument is optional. If supplied and the file exists,
# texdep is called on that file followed by a make on the generated Makefile with make_args
# passed as a parameter.
#
# If the root_tex_file.tex argument isn't supplied, makelatex scans the current directory for 
# .tex files. Only in the event that one .tex file is found are texdep and make subsequently called
# as above. Otherwise the call to makelatex is ambiguous (more than one .tex file) or nonsensical
# (no .tex files exist).

if expr "$1" : '.*\(\.tex\)$' &> /dev/null 
then
    if ! test -f $1
    then
	echo "File $1 not found."
	exit 1
    fi
    tex_file=$1
    shift
fi

if [ "$tex_file" = "" ] 
then
    num_texs=`find -maxdepth 1 -name "*.tex" | wc -l`
    if [[ $num_texs = 0 ]]
    then
	echo "No TeX file supplied or found in current directory"
	exit 2
    elif [[ $num_texs > 1 ]]
    then
	echo "Multiple TeX files found in current directory. Please specify one as the first argument."
	exit 3
    else
	tex_file=`/bin/ls *.tex`
    fi
fi

if ! [ "$*" = "" ]
then
    make_args="$*"
fi

texdep $tex_file && exec make $make_args