Is this possible to de serialize the data with kot...

# multiplatform

[Muhammad Rehan]

Is this possible to de serialize the data with kotlinx.serialization which is serialized using java

[rocketraman]

Serialized using Java to what?

[rocketraman]

You probably should ask this in #serialization

[Muhammad Rehan]

octet-stream

[rocketraman]

A stream of bytes sure, but using what format? Do you mean via ObjectOutputStream?

[Muhammad Rehan]

Yes

[rocketraman]

If you can't change the serialization format to something else (like Protobuf or JSON), then you'll probably need to write a custom decoder. See https://github.com/Kotlin/kotlinx.serialization/blob/master/docs/formats.md#basic-decoder.

[Muhammad Rehan]

I am converting the libphonenumber java library to kotlin to use it in kotlin Multiplatform

[rocketraman]

What platforms do you need to support?

[Muhammad Rehan]

Ios, android and desktop

[rocketraman]

If you are writing a pure-Kotlin port, why do you need to deserialize Java classes?

[Muhammad Rehan]

I have files that contains information like phone number patterns, and validations, example numbers e.t.c

[Muhammad Rehan]

But they are serialized by Google using java output stream

[rocketraman]

Another option is to use the Java libphonenumber on Android/desktop, and an existing port for iOS e.g. https://github.com/marmelroy/PhoneNumberKit. You can make all this transparent to your common code via some expect/actuals.

[Muhammad Rehan]

But this is already exists on github but that one uses moko resources but I want to use compose resources

[rocketraman]

> But they are serialized by Google using java output stream
From what I can tell, it looks like they do this for the Java version via some tooling e.g. https://github.com/google/libphonenumber/blob/259c5917d05a7c9613ecf7c9e4a3af959bdb27e3/tools/java/java-build/src/com/google/i18n/phonenumbers/buildtools/GeneratePhonePrefixData.java , but if you are writing a pure-Kotlin port, just use the source data instead and load them into similar Kotlin classes. It looks like they also expose some protobufs, see https://github.com/google/libphonenumber/blob/259c5917d05a7c9613ecf7c9e4a3af959bdb27e3/resources/phonemetadata.proto and https://github.com/google/libphonenumber/blob/259c5917d05a7c9613ecf7c9e4a3af959bdb27e3/resources/phonenumber.proto.

[Luca]

@Muhammad Rehan I already started a mostly working direct port of the android one if you want to help getting it to pass all tests on all targets https://github.com/luca992/libphonenumber-kotlin

I figured out how to deserialize the java data resources as well.

[Luca]

here’s my port of ObjectInputStream for common koltin using okio

[Emirhan Emmez]

Hi @Luca , I'm trying to use your libphonenumber-kotlin library but I don't want to use moko resources. Is there any way to do it?

[Luca]

@Emirhan Emmez well for the library I need to use some sort of multiplatform resources library and the only real options are moko-resources and compose resources. I would use compose resources, but that includes a dependency on compose and I wanted to avoid that. My goal is to use moko-resources to pack them correctly inside the library and whatever project adds libphonenumber-kotlin can use whatever resources library they want

[Luca]

If things are working as I want them to you shouldn’t have to add moko-resources to your own project

[Luca]

(I’m not saying they are working as I want them to yet 🤔)