Data commit

Task/XML-XPath/Lua/xml-xpath.lua

@@ -0,0 +1,44 @@
+require 'lxp'
+data = [[<inventory title="OmniCorp Store #45x10^3">
+  <section name="health">
+    <item upc="123456789" stock="12">
+      <name>Invisibility Cream</name>
+      <price>14.50</price>
+      <description>Makes you invisible</description>
+    </item>
+    <item upc="445322344" stock="18">
+      <name>Levitation Salve</name>
+      <price>23.99</price>
+      <description>Levitate yourself for up to 3 hours per application</description>
+    </item>
+  </section>
+  <section name="food">
+    <item upc="485672034" stock="653">
+      <name>Blork and Freen Instameal</name>
+      <price>4.95</price>
+      <description>A tasty meal in a tablet; just add water</description>
+    </item>
+    <item upc="132957764" stock="44">
+      <name>Grob winglets</name>
+      <price>3.56</price>
+      <description>Tender winglets of Grob. Just add water</description>
+    </item>
+  </section>
+</inventory>]]
+local first = true
+local names, prices = {}, {}
+p = lxp.new({StartElement = function (parser, name)
+	local a, b, c = parser:pos() --line, offset, pos
+	if name == 'item' and first then
+		print(data:match('.-</item>', c - b + 1))
+		first = false
+	end
+	if name == 'name' then names[#names+1] = data:match('>(.-)<', c) end
+	if name == 'price' then prices[#prices+1] = data:match('>(.-)<', c) end
+end})
+
+p:parse(data)
+p:close()
+
+print('Name: ', table.concat(names, ', '))
+print('Price: ', table.concat(prices, ', '))