#!/bin/sh

#
# Yoink
# Run this script to convert the manual page to html.
#
# Requires groff.
# Have fun!
#

function showhelp()
{
	echo "Create an html manual page."
	echo "Usage: $0 [-Hfh] [-i manpage] [-o htmlfile]"
	echo ""
	echo "  -H  Hide email addresses in the manual page."
	echo "  -f  Force overwrite of output file."
	echo "  -h  Show this help an exit."
	echo "  -i  Specify the manual page to convert."
	echo "  -o  Specify output path of html file."
}

INFILE="doc/yoink.6"
OUTFILE="yoink.html"

while getopts ":Hfhi:o:" opt
do
	case $opt in
		H)
			HIDE_EMAIL=yes
			;;
		f)
			FORCE=yes
			;;
		h)
			showhelp
			exit 0
			;;
		i)
			INFILE="$OPTARG"
			;;
		o)
			OUTFILE="$OPTARG"
			;;
		\?)
			echo "Invalid option: -$OPTARG" >&2
			showhelp
			exit 1
			;;
	esac
done

if test x$FORCE != xyes && test -e "$OUTFILE"
then
	echo "Refusing to overwrite file: $OUTFILE.  Use -f to override." >&2
	exit 1
fi

if test ! -f "$INFILE"
then
	echo "Can't open file: $INFILE" >&2
	exit 1
fi

DATE=$(date +"%d %b %Y")

# 1. Remove first two lines (comments about groff).
# 2. Edit page title.
# 3. Insert a footer before </body>.
HTML=$(groff -t -e -mandoc -Thtml "$INFILE" | sed -e "1,2d" \
-e "s|<title>.*</title>|<title>Yoink Manual</title>|" -e "s|</body>|\
<p style=\"font-size: 9px; text-align: center;\">\\
This manual page was generated on $DATE.\\
For more information, go to the\\
<a href=\"http://www.dogcows.com/yoink/\">Yoink website</a>.\\
</p>\\
</body>|")

if test x$HIDE_EMAIL = xyes
then
# 4. Replace email addresses with a placeholder.
	echo "$HTML" \
	| sed -e "s|&lt;.*@.*&gt;|\&lt;email address not shown\&gt;|g" \
	>"$OUTFILE"
else
	echo "$HTML" >"$OUTFILE"
fi