Changes between Initial Version and Version 1 of XPath

Timestamp:

2010-02-28 08:28:08 (15 years ago)

Author:

javier_guerra

Comment:

--

XPath

@@ +1 @@
+
+== xpath.lua ==
+
+[http://www.keplerproject.org/luaexpat/ LuaExpat] is installed in the standard MIOS software.  This Lua extension lets you create SAX-based XML parsers in Lua.  [http://www.keplerproject.org/luaexpat/lom.html LOM] is one of these parsers is included in the !LuaExpat package.  Given a XML document, LOM creates a nested table structure that replicates the XML structure.
+
+LuaXPath is a utility function that lets you use [http://www.w3.org/TR/xpath XPath] expressions to query a LOM object.
+
+{{{
+#!lua
+require "xpath"
+local lom = require "lxp.lom"
+
+local xmlTest =
+[[
+#!xml
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<root>
+        <element id="1" name="element1">text of the first element</element>
+        <element id="2" name="element2">
+                <subelement>text of the second element</subelement>
+        </element>
+</root>
+]]
+
+local lomobj = lom.parse(xmlTest)
+
+-- get all elements
+xpath.selectNodes(lomobj,'//element')
+-- get the subelement text
+xpath.selectNodes(lomobj,'/root/element/subelement/text()')
+-- get the first element
+xpath.selectNodes(lomobj,'/root/element[@id="1"]')
+}}}
+