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path: root/Mk/Scripts/split-url.awk
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function join_url(url,	s, query_keys, i) {
	s = url["scheme"] "://"
	if (url["user"]) {
		s = s url["user"]
		if (url["password"]) {
			s = s ":" url["password"]
		}
		s = s "@"
	}
	s = s url["host"]
	if (url["port"]) {
		s = s ":" url["port"]
	}
	if (url["path"]) {
		s = s url["path"]
	}
	if (url["query"]) {
		split(url["query"], query_keys)
		s = s "?"
		for (i = 1; i <= length(query_keys); i++) {
			s = s query_keys[i] "=" url["query", query_keys[i]]
			if (i != length(query_keys)) {
				s = s ";"
			}
		}
	}
	if (url["fragment"]) {
		s = s "#" url["fragment"]
	}
	return s
}

function split_url(url, s,	url_scheme, url_fragment, url_query, url_query_parts, i, url_query_part, url_authority, url_auth, url_user, url_host) {
	delete url
	# scheme:[//[user[:password]@]host[:port]][/path][?query][#fragment]
	split(s, url_scheme, "://")
	url["scheme"] = url_scheme[1]

	split(url_scheme[2], url_fragment, "#")
	url["fragment"] = url_fragment[2]

	split(url_fragment[1], url_query, "?")

	split(url_query[2], url_query_parts, "&")
	# url["query"] list of query keys (space separated)
	# url["query", key] value
	for (i = 1; i <= length(url_query_parts); i++) {
		split(url_query_parts[i], url_query_part, "=")
		url["query"] = url["query"] " " url_query_part[1]
		url["query", url_query_part[1]] = url_query_part[2]
	}

	split(url_query[1], url_authority, "/")
	url["path"] = substr(url_query[1], length(url_authority[1]) + 1)

	split(url_authority[1], url_auth, "@")

	if (length(url_auth) == 2) {
		split(url_auth[1], url_user, ":")
		url["user"] = url_user[1]
		url["password"] = url_user[2]
		split(url_auth[2], url_host, ":")
	} else {
		url["user"] = ""
		url["password"] = ""
		split(url_auth[1], url_host, ":")
	}
	url["host"] = url_host[1]
	url["port"] = url_host[2]
}