xpath: what changed

Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.

Title: xpath

New		Line
1	+	Just an XPath implementation. Should be fairly complete, but there hasn't been further development recently.
2	+
3	+	## Example
4	+
5	+	ts.xml
6	+
7	+	``` xml
8	+	<?xml version="1.0" ?><!DOCTYPE TS><TS language="es_ES" version="2.1">
9	+	<context>
10	+	<name>AboutDialog</name>
11	+	<message>
12	+	<location filename="../src/lib/other/aboutdialog.ui" line="60"/>
13	+	<source>Authors</source>
14	+	<translation>Autores</translation>
15	+	</message>
16	+	<message>
17	+	<location filename="../src/lib/other/aboutdialog.cpp" line="56"/>
18	+	<source>Authors and Contributors</source>
19	+	<translation>Autores y contribuidores</translation>
20	+	</message>
21	+	</context>
22	+	</TS>
23	+	```
24	+
25	+	``` pascal
26	+	uses
27	+	DOM, XMLRead, XPath;
28	+
29	+	var
30	+	Xml: TXMLDocument;
31	+	XPathResult: TXPathVariable;
32	+	begin
33	+	ReadXMLFile(Xml, 'ts.xml');
34	+	//Get text inside <translation> tag
35	+	XPathResult := EvaluateXPathExpression('/TS/context[name="AboutDialog"]/message[source="Authors"]/translation', Xml.DocumentElement);
36	+	ShowMessage(String(XPathResult.AsText));
37	+	XPathResult.Free;
38	+	Xml.Free;
39	+	end;
40	+	```
41	+
42	+	Back to [[fcl-xml]] overview.
43	+
44	+	---
45	+	From the Free Pascal wiki, page "xpath", as it stood on 2020-03-03 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).
46	+	Category: XML