elinks/doc/tools/help2doc

#!/bin/sh
#
#
# Script used to generate doc/book/config/cmdoptions.xml
# and hopefully other in the future.

# Updated by option handlind via --elinks=path/to/elinks option
elinks="$1"
option="$2"

# Option handling {{{1

command=

case "$option" in
	*command*)
	filter="sed 0,/^Options:/d"
	option=--long-help
	;;
	*config*)
	filter="sed 0,/^Configuration/d"
	option=--config-help
	;;
esac

print_description_line()
{
	line="$1"
	number="$2"

	case "$line" in
	-eval*)
		echo
		;;
	*)
		line="$(echo $line | sed 's,\(-touch-files\|-no-connect\|-session-ring\|-dump\|-default-mime-type\|text/html\|~/\.elinks\),\`\1\`,g')"
		line=$(echo $line | sed "s,'\([^']*\)',\\\'\1\\\',")
		line=$(echo $line | sed "s,ELinks,'ELinks',g")
		line=$(echo $line | sed "s,HOME,'HOME',g")
		line="$(echo $line | sed 's/^\([a-zA-Z]*([^)]*)\).*:/- \`\1\`:/')"

		if test -n "$number";
		then
			echo -n "	- $number:"
		fi
	esac
	echo "	$line"
}

print_option_tree()
{
	title="$1"
	path="$2"
	echo "$path::"
}

print_option_type()
{
	path="$1"
	typeid="$2"
	default="$3"
	typestring="$path"
	if test -n "$typeid" && test "$typeid" != "$path";
	then
		if test "$typeid" = "(alias";
		then
			typestring="$typestring ($default)"
			default=
		else
			typestring="$typestring $typeid"
		fi
	fi
	if test -n "$default" && test "$default" != "$path";
	then
		typestring="$typestring ($default)"
	fi
	if test "$default" = "-?, -h, -help";
	then
		typestring="$default"
	fi

	echo "$typestring::"
}


# The main loop {{{1

# State variables
parse_description=
parse_int_option=
use_log=

"$elinks" $option | $filter | while read line
do
	if test -n "$parse_description"
	then
		# If the line is empty it is our clue that
		# the desciption is over.
		if test -z "$line"
		then
			echo
			parse_description=
			parse_int_option=
			continue
		fi

		line=`echo "$line" | sed -e "s/[ ]*(DISABLED)//"`
		number=
		if test -n "$parse_int_option";
		then
			case "$line" in
				-[0-9]*)
					number="`echo $line | sed -e 's/\(-[0-9-]*\).*/\1/'`"
					line=`echo "$line" | sed -e "s/$number[ ]*//"`
				;;

				[0-9]*)
					number="`echo $line | sed -e 's/\([0-9-]*\).*/\1/'`"
					line=`echo "$line" | sed -e "s/$number[ ]*//"`
				;;
			esac
		fi

		print_description_line "$line" "$number"
		continue
	fi

	case "$line" in
		Features:*)
		;;
		[A-Z]*:" ("*[a-z]*)
			parse_description=1
			title="`echo $line | sed -e 's/\([A-Z]*\):.*/\1/'`"
			path="`echo $line | sed -e 's/.*: (\([a-z_].*\))/\1/'`"
			print_option_tree "$title" "$path"
		;;

		[a-z_-]*[.a-z_-]*)
			parse_description=1
			path="`echo $line | sed -e 's/\([a-z-][^ ]*\).*/\1/'`"
			typeid="`echo $line | sed -e 's/[ ]*[a-z-][^ ]* \([^ ]*\).*/\1/'`"
			default="`echo \"$line\" | sed -e 's/[^(]*(\(.*\))/\1/'`"
			print_option_type "$path" "$typeid" "$default"
			if test "$typeid" = "<num>";
			then
				parse_int_option=1
			fi
		;;

		*)
		;;
	esac
done

version="`$elinks -version | head -n 1 | sed -e 's/ELinks \([0-9][^ ]*\).*/\1/'`"
echo "Generated using output from ELinks version $version."


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