#!/bin/sh

die () {

	echo "$@" >&2

	exit 1

}

command_list () {

	grep -v '^#' "$1"

}

get_categories () {

	tr ' ' '\n'|

	grep -v '^$' |

	sort |

	uniq

}

category_list () {

	command_list "$1" |

	cut -c 40- |

	get_categories

}

get_synopsis () {

	sed -n '

		/^NAME/,/'"$1"'/H

		${

			x

			s/.*'"$1"' - \(.*\)/N_("\1")/

			p

		}' "Documentation/$1.txt"

}

define_categories () {

	echo

	echo "/* Command categories */"

	bit=0

	category_list "$1" |

	while read cat

	do

		echo "#define CAT_$cat (1UL << $bit)"

		bit=$(($bit+1))

	done

	test "$bit" -gt 32 && die "Urgh.. too many categories?"

}

define_category_names () {

	echo

	echo "/* Category names */"

	echo "static const char *category_names[] = {"

	bit=0

	category_list "$1" |

	while read cat

	do

		echo "	\"$cat\", /* (1UL << $bit) */"

		bit=$(($bit+1))

	done

	echo "	NULL"

	echo "};"

}

print_command_list () {

	echo "static struct cmdname_help command_list[] = {"

	command_list "$1" |

	while read cmd rest

	do

		printf "	{ \"$cmd\", $(get_synopsis $cmd), 0"

		for cat in $(echo "$rest" | get_categories)

		do

			printf " | CAT_$cat"

		done

		echo " },"

	done

	echo "};"

}

echo "/* Automatically generated by generate-cmdlist.sh */

struct cmdname_help {

	const char *name;

	const char *help;

	uint32_t category;

};

"

define_categories "$1"

echo

define_category_names "$1"

echo

print_command_list "$1"