lib/utils/xml.rb in metanorma-utils-1.8.5 vs lib/utils/xml.rb in metanorma-utils-1.9.0

@@ -60,9 +60,41 @@
             .gsub("—", "\u0097").gsub("–", "\u0096")
             .gsub("—", "\u0097")
         end
       end
 
+      def noko(_script = "Latn", &block)
+        fragment = ::Nokogiri::XML.parse(NOKOHEAD).fragment("")
+        ::Nokogiri::XML::Builder.with fragment, &block
+        ret = fragment
+          .to_xml(encoding: "UTF-8", indent: 0,
+                  save_with: Nokogiri::XML::Node::SaveOptions::AS_XML)
+          .lines.map do |l|
+            l.rstrip.gsub("–", "\u0096").gsub("—", "\u0097")
+              .gsub("–", "\u0096").gsub("—", "\u0097")
+          end
+        line_sanitise(ret)
+      end
+
+      # By default, carriage return in source translates to whitespace;
+      # but in CJK, it does not.  We don't want carriage returns in the final
+      # output because of CJK complications
+      def line_sanitise(ret)
+        ret.size == 1 and return ret
+        (0...ret.size).each do |i|
+          last = firstchar_xml(ret[i].reverse)
+          nextfirst = firstchar_xml(ret[i + 1])
+          /#{CJK}/o.match?(last) && /#{CJK}/o.match?(nextfirst) or
+            ret[i] += " "
+        end
+        ret
+      end
+
+      def firstchar_xml(line)
+        m = /^(<[^>]+>)*(.)/.match(line) or return ""
+        m[2]
+      end
+
       def noko_html(&block)
         doc = ::Nokogiri::XML.parse(NOKOHEAD)
         fragment = doc.fragment("")
         ::Nokogiri::XML::Builder.with fragment, &block
         fragment.to_xml(encoding: "UTF-8", indent: 0,