require "asciidoctor"
require "tempfile"
require "uuidtools"
require "htmlentities"
require "nokogiri"
module Metanorma
module Utils
NAMECHAR = "\u0000-\u002c\u002f\u003a-\u0040\\u005b-\u005e"\
"\u0060\u007b-\u00b6\u00b8-\u00bf\u00d7\u00f7\u037e"\
"\u2000-\u200b"\
"\u200e-\u203e\u2041-\u206f\u2190-\u2bff\u2ff0-\u3000".freeze
NAMESTARTCHAR = "\\u002d\u002e\u0030-\u0039\u00b7\u0300-\u036f"\
"\u203f-\u2040".freeze
class << self
def to_ncname(tag, asciionly: true)
asciionly and tag = HTMLEntities.new.encode(tag, :basic, :hexadecimal)
start = tag[0]
ret1 = if %r([#{NAMECHAR}#])o.match?(start)
"_"
else
(%r([#{NAMESTARTCHAR}#])o.match?(start) ? "_#{start}" : start)
end
ret2 = tag[1..-1] || ""
(ret1 || "") + ret2.gsub(%r([#{NAMECHAR}#])o, "_")
end
def anchor_or_uuid(node = nil)
uuid = UUIDTools::UUID.random_create
node.nil? || node.id.nil? || node.id.empty? ? "_#{uuid}" : node.id
end
NOKOHEAD = <<~HERE.freeze
HERE
# block for processing XML document fragments as XHTML,
# to allow for HTMLentities
# Unescape special chars used in Asciidoctor substitution processing
def noko(&block)
doc = ::Nokogiri::XML.parse(NOKOHEAD)
fragment = doc.fragment("")
::Nokogiri::XML::Builder.with fragment, &block
fragment.to_xml(encoding: "US-ASCII", indent: 0,
save_with: Nokogiri::XML::Node::SaveOptions::AS_XML)
.lines.map do |l|
l.gsub(/>\n$/, ">").gsub(/\s*\n$/m, " ").gsub("–", "\u0096")
.gsub("—", "\u0097").gsub("–", "\u0096")
.gsub("—", "\u0097")
end
end
end
end
end