Why NSXMLDocument doesn't escape newline character (\n)

Question

I'm running this code:

NSXMLElement *element = [NSXMLElement elementWithName:@"name" stringValue:@"value\n"];
NSXMLDocument *document = [[NSXMLDocument alloc] initWithRootElement:element];
NSLog(@"%@", document.XMLString);

And I'm getting this result:

<name>value
</name>

But I'm expecting the result to be:

<name>value&#xA;</name>

Does anybody know why NSXMLDocument doesn't escape \n? Is it an expected behavior?

I also tried XMLStringWithOptions: with different options, e.g. NSXMLNodePreserveWhitespace, but with no luck.

score 2 · Answer 1 · answered Feb 28 '19 at 16:39

2

Because \n is valid xml. If you really want values to be URL encoded, you'll need to encode them.

How do I URL encode a string

answered Feb 28 '19 at 16:39

slf

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What about attribute values? I believe that `\n` in attribute values must be escaped. – Anton Simakov Mar 01 '19 at 13:34
Pretty sure the same goes for attribute values – slf Mar 02 '19 at 13:15
It seems no. According to the doc https://www.w3.org/TR/2000/WD-xml-c14n-20000119.html#charescaping it must be escaped for XML version 1.0 – Anton Simakov Mar 04 '19 at 08:26

Why NSXMLDocument doesn't escape newline character (\n)

1 Answers1