#!/bin/sh

# argument checking
if [ ${#} -ne "2" ]; then
	echo "Usage: ${0} <word document> <dvi output file>"
	exit 1
fi

which wvLatex >/dev/null 2>&1
if [ ${?} -ne "0" ]; then
	echo "Could not find required program 'wvLatex'"
	exit 1
fi

which latex >/dev/null 2>&1
if [ ${?} -ne "0" ]; then
	echo "Could not find required program 'latex'"
	exit 1
fi

# latex has trouble with filenames
CLEAN_FILE=`echo -n "${2}"|tr -c [:alnum:]-. _`
LATEX_FILE="${CLEAN_FILE}.tex"

wvCleanLatex "${1}" "${LATEX_FILE}" >/dev/null 2>&1
if [ ${?} -ne "0" ]; then
	echo "Error converting into LaTeX"
	exit 1
fi

DIRNAME=`dirname "${LATEX_FILE}"`
BASENAME=`basename "${LATEX_FILE}"`

(
cd "$DIRNAME"
latex --interaction=batchmode "${BASENAME}" >/dev/null 2>&1
)

# check latex exit status and comment or clean up
if [ ${?} -ne "0" ]; then
	echo "Some problem running latex."
	echo "Check for Errors in ${CLEAN_FILE}.log"
	echo "Continuing..."
else
	rm -f "${CLEAN_FILE}.aux" "${CLEAN_FILE}.log" "${LATEX_FILE}"
fi

# latex replaces the "tex" extension with a "dvi" extension
if [ ! -f "${CLEAN_FILE}.dvi" ]; then
	echo "Conversion into dvi failed"
	exit 1
fi
mv "${CLEAN_FILE}.dvi" "${2}"