+
+# Return the first paragraph of the given item as a string.
+def item_longdesc(item)
+ xml = Nokogiri::XML("<body xmlns='" + Xmlns["xhtml"] + "'>" +
+ item.compiled_content(snapshot: :rawbody) +
+ "</body>")
+
+ p = xml.xpath('//xhtml:p', Xmlns)
+ if p.empty? then nil else p[0].xpath('string(.)') end
+end
+
+def counter(name = :default, item = @item)
+ $counters[item] ||= {}
+ $counters[item][name] ||= 0
+
+ name.to_s.capitalize + " " + ($counters[item][name] += 1).to_s
+end
+
+def human_filesize(size)
+ units = ["B", "KiB", "MiB", "GiB"]
+ prec = 0
+
+ for unit in units
+ if (size < 1024)
+ break
+ end
+
+ size /= 1024.0
+ prec = 1
+ end
+
+ sprintf("%.*f %s", prec, size + 0.05, unit)
+end