#!/usr/bin/env sh

##
## wrapper for chklref program
## Automatically generated by configure from chklref.in
##

#########################################################################
# Written and (C) by Jérôme Lelong <jerome.lelong@gmail.com>            #
#                                                                       #
# This program is free software; you can redistribute it and/or modify  #
# it under the terms of the GNU General Public License as published by  #
# the Free Software Foundation; either version 3 of the License, or     #
# (at your option) any later version.                                   #
#                                                                       #
# This program is distributed in the hope that it will be useful,       #
# but WITHOUT ANY WARRANTY; without even the implied warranty of        #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         #
# GNU General Public License for more details.                          #
#                                                                       #
# You should have received a copy of the GNU General Public License     #
# along with this program.  If not, see <http://www.gnu.org/licenses/>. #
#########################################################################

prefix=@prefix@
bindir=@bindir@
SCRIPTSDIR=@SCRIPTSDIR@

PERL=@PERL_PATH@
LATEX=@LATEX_PATH@
PDFLATEX=@PDFLATEX_PATH@
VERSION=@VERSION@
LATEXDIR=@LATEXDIR@
DOCDIR=@DOCDIR@
SCRIPTSDIR=@SCRIPTSDIR@

print_usage()
{
    cat << EOF

chklref

This is a latex utility to check for unused labels and bibitems in 
a LaTeX file.

usage: chklref [OPTIONS] file[.tex]

OPTIONS

    -p,--pdf      : Use pdflatex instead of latex
    -q,--quiet    : Run LaTeX quietly
    -d,--debug    : Run in deubgging mode
    -h,--help     : Display this help
    --version     : Display the version number

EOF
}

out='/dev/stdout'
latex_cmd=$LATEX
debug=0
while test -n "$1"
do
    case "$1" in
        -p|--pdf) 
            latex_cmd=$PDFLATEX
            shift
            ;;
        -h|--help)
            print_usage
            exit 0
            ;;
        -q|--quiet) 
            out='/dev/null'
            shift
            ;;
        -d|--debug) 
            debug=1
            shift
            ;;
        --version)
            echo "chklref version $VERSION"
            exit 0
            ;;
        -*) 
            echo "Unknown option: $1"
            print_usage
            exit 1
            ;;
        *)
            break
            ;;
    esac
done

INFILE=$1
if test -z "$INFILE"; then
    echo "$0:   You must specify an input file"
    exit 1
fi

if test ! -f "${INFILE}"; then
    INFILE=${INFILE}.tex
fi
if test ! -f "${INFILE}"; then
    echo "$0:   Neither ${INFILE} nor ${INFILE}.tex exists"
    exit 1
fi

# POSIX extractions of dirname and basename
basetexfile=${INFILE##*/}
basetexfile=${basetexfile%.tex}
dirtexfile=${INFILE%/*}
if [ "${dirtexfile}" = "$1" ]; then dirtexfile="."; fi

cd -- "${dirtexfile}"

echo "Running $latex_cmd on $basetexfile.tex to collect labels,
references and environment declarations\n\n" > "$out"
$latex_cmd --interaction errorstopmode "${basetexfile}" > "$out" 2>&1
rm -f -- "$basetexfile".tex.chk
$latex_cmd --interaction errorstopmode --jobname "$basetexfile" \
    '\RequirePackage{chklref}\input' "{$basetexfile.tex}" > "$out" 2>&1
$PERL "$SCRIPTSDIR"/chkparser "$basetexfile".chk
[ $debug -ne 0 ] || rm -f -- "$basetexfile".chk