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node-set-insert.lua

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#!/usr/bin/env luajit

local xmlua = require("xmlua")

local document = xmlua.XML.parse([[

<xml>

<header>

<title>This is test</title>

</header>

<contents>

<sub1>sub1</sub1>

<sub2>sub2</sub2>

<sub3>sub3</sub3>

</contents>

</xml>

]])

-- Insert a node

local node_set = document:search("//title")

-- <title>This is test</title>

local sub1 = document:search("//xml/contents/sub1")[1]

-- <sub1>sub1</sub1>

node_set:insert(sub1)

print(node_set:to_xml())

-- <title>This is test</title><sub1>sub1</sub1>

-- Insert a node with position

local node_set = document:search("//xml/contents/*")

-- <sub1>sub1</sub1>

-- <sub2>sub2</sub2>

-- <sub3>sub3</sub3>

local title = document:search("//title")[1]

-- <title>This is test</title>

node_set:insert(1, title)

print(node_set:to_xml())

-- <title>This is test</title>

-- <sub1>sub1</sub1>

-- <sub2>sub2</sub2>

-- <sub3>sub3</sub3>