Long xml string seem cut in IOS

[pamainville-clgx]

I take my chance here

So, I have a very long XML string to decode, containing a list of object.

All is working fine in Android, decoding of the XML string work perfectly, what ever the length, but in IOS, it seem to have a problem and my investigation lead mo to something like the string would be cut, in IOS.

String of 7770 char work good
String of 8725 char give me

• error = 1:8192 - name expected
  String of 8844 char give me

• Expected text content or end tag, found: START_ELEMENT

Most so by just keeping the same exact structure in the XML list, same data, but adding just one element make it failed on IOS side!

I know this is not the best tool to be able to debug code look like this if this can help

@Suppress("UNCHECKED_CAST")
private val module = SerializersModule {}

private val xml = XML(module) {
    autoPolymorphic = true
    repairNamespaces = false
    unknownChildHandler = UnknownChildHandler { _, _, _, _, _ -> emptyList() }
}

val xmlEntity =  xml.decodeFromString(SomeStructure.serializer(), xmlStringTest)

I can try to make a better sample to provoque the bug

[pdvrieze]

The different platforms (by default) use different serializers/deserializers. The cross-platform one used for iOS is derived from the Android code, but you've probably found some sort of bug in buffer handling. You may note the number 8192 in the error, that is 8*1024 which is a buffer size used.

[pamainville-clgx]

So, is there a way to fix this?

[pdvrieze]

The problem is a bug in the StringReader implementation. It has been pushed to the dev branch. The easiest workaround is to get your own reader (KtXmlReader) based upon an a fixed/alternative StringReader implementation. I'll see what I can do to release this as soon as possible.

[pamainville-clgx]

We're not in a hurray, but we would prefer if we do not have any platform special code to do :)

[rrenna]

I am also having this issue I believe. Hopefully a fix is up soon, thanks for your hard work.

[pdvrieze]

I'm now building 0.84.2, should release soon

[pamainville-clgx]

GREAT

Thanks for your work!

[pamainville-clgx]

Hmmm, got this error now with 0.84.2 when compiling IOS!

e: Compilation failed: Backend Internal error: Exception during IR lowering
File being compiled: /Users/runner/work/xmlutil/xmlutil/serialization/src/commonMain/kotlin/nl/adaptivity/xmlutil/serialization/annotations.kt
The root cause java.lang.AssertionError was thrown at: org.jetbrains.kotlin.backend.konan.lower.InitializersLowering$InitializersTransformer.lowerConstructors(InitializersLowering.kt:161)

[pdvrieze]

That probably is a compiler bug. Please try to clean and then build. I've noticed some issues with incremental compilation.

[rrenna]

I am getting the same error.

[rrenna]

Changed back to 0.84.1 and it builds, cleaned project and tried again, same result - the above error.

[rrenna]

Upon further investigation it looks like it's failing to find 0.84.2, I looked at the Maven url and the artifact isn't there - is that normal? https://s01.oss.sonatype.org/content/repositories/snapshots/io/github/pdvrieze/xmlutil/core/

[pdvrieze]

That is a snapshot repository. I didn't create a snapshot, only a proper release (on mavencentral). It is here.