#!/bin/sh

MANDOC="@MANDOCPROG@"
GROFF="@GROFFPROG@"
MANTYPE="@MANTYPE@"
EGREP="@EGREP@"

if [ "$MANTYPE" != "mdoc" ]; then
    echo "$0 only supports mdoc manuals" 1>&2
    exit 1
fi

TFILE=`mktemp -t check_man.XXXXXX` || exit 1
OFILE=`mktemp -t check_man.XXXXXX` || exit 1

rval=0

# Perform checks across all files first
$EGREP -n '([^0-9][0-9]-[1-9]|[^A-Z][A-Z]-[A-Z]|[^a-z][a-z]-[a-z])' "$@" > "$TFILE" 2>&1
if [ $? -eq 0 ]; then
    rval=`expr $rval + 1`
    echo "" >> "$OFILE"
    echo "Change '-' to '\(en' (en-dash) for alpha or numeric range:" >> "$OFILE"
    cat "$TFILE" >> "$OFILE"
fi

$EGREP -n '--' "$@" > "$TFILE" 2>&1
if [ $? -eq 0 ]; then
    rval=`expr $rval + 1`
    echo "" >> "$OFILE"
    echo "Change '--' to '\(em' (em-dash) or escape the '-':" >> "$OFILE"
    cat "$TFILE" >> "$OFILE"
fi

$EGREP -n '-[^-\\]' "$@" > "$TFILE" 2>&1
if [ $? -eq 0 ]; then
    rval=`expr $rval + 1`
    echo "" >> "$OFILE"
    echo "Escape '-' as '\-':" >> "$OFILE"
    cat "$TFILE" >> "$OFILE"
fi

# Change a HYPHEN-MINUS (code 0x2D) to a minus(-dash) (\-),

$EGREP -n '^\.It[ 	].*[ 	]Ta$' "$@" > "$TFILE" 2>&1
if [ $? -eq 0 ]; then
    rval=`expr $rval + 1`
    echo "" >> "$OFILE"
    echo "Empty table cell at EOL leads to trailing whitespace:" >> "$OFILE"
    cat "$TFILE" >> "$OFILE"
fi

$EGREP -n '[ 	]$' "$@" > "$TFILE" 2>&1
if [ $? -eq 0 ]; then
    rval=`expr $rval + 1`
    echo "" >> "$OFILE"
    echo "Trailing whitespace:" >> "$OFILE"
    cat "$TFILE" >> "$OFILE"
fi

while [ $# != 0 ]; do
    if [ "$MANDOC" != "mandoc" ]; then
	# Ignore OS warning and missing cross-references
	$MANDOC -Tlint $1 | $EGREP -v 'STYLE: (operating system explicitly specified|referenced manual not found):' > "$TFILE" 2>&1
	if [ -s "$TFILE" ]; then
	    rval=`expr $rval + 1`
	    cat "$TFILE"
	fi
    fi

    if [ "$GROFF" != "groff" ]; then
	$GROFF -mandoc -K utf8 -rF0 -rHY=0 -rCHECKSTYLE=10 -ww -b -z $1 || \
	    rval=`expr $rval + $?`
    fi

    shift
done

if [ -s "$OFILE"  ]; then
    cat "$OFILE"
fi

rm -f "$OFILE" "$TFILE"
exit $rval