Hi :wave: I’m looking for a way to generate a clas...
# kspc
Chris C
04/27/2022, 3:37 PMHi 👋 I’m looking for a way to generate a class from a json file before/as part of my build. Would KSP be a viable way to do that?
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efemoney
04/27/2022, 3:42 PMNo, but you could that with Gradle (or some other build system you use)
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Chris C
04/27/2022, 3:45 PMok, thanks
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Dutch
04/27/2022, 5:02 PMWhy shouldn't that be possible? Couldn't you just add a simple annotation; create a processor for that annotation; fetch the JSON file; create the source with maybe something like KotlinPoet?
Ofcourse, changing the content of the json wouldn't trigger a new processor run with incremental builds.
Or am I missing something?
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efemoney
04/27/2022, 5:50 PMHow would you "fetch the JSON" with KSP 🤔
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Dutch
04/27/2022, 5:56 PM Copy code
error(URL("<https://reqres.in/api/users?page=2>").readText())Dutch
04/27/2022, 6:47 PM@Chris C Did you mean something like that?
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efemoney
04/27/2022, 6:48 PMI believe he meant that there is a json file somewhere in the project. Not on some remote server. But will let @Chris C confirm
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Chris C
04/27/2022, 7:01 PMYes, so I want the json file to be a local resource
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efemoney
04/27/2022, 7:03 PMYeah KSP doe not (yet) support reading non source files https://github.com/google/ksp/issues/431
efemoney
04/27/2022, 7:04 PMSounds like a gradle plugin is better suited to your use case 🤔
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Dutch
04/27/2022, 7:06 PM Copy code
error(File("file.json").readText(Charsets.UTF_8))c
Chris C
04/27/2022, 7:09 PMI wanted to do something like this to read the json:
MyClass::class.java.getResourceAsStream("file.json")j
Jiaxiang
04/27/2022, 7:24 PMtheoretically you can add relative path as annotation argument and parse file path there. But since you are not really working at symbol level, KSP might not be a best suit for your use.
😈 1
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Chris C
04/27/2022, 7:29 PMYes I was starting to wonder if that was the case. I'll take a look at adding an extra build step and maybe use kotlinpoet to generate the code. Thanks everyone for all the help and pointers.
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Michal Klimczak
02/01/2023, 3:16 PMI need something that mixes annotations with external files (yaml files). This doesn't seem to be officially supported in KSP at this point, but providing it via annotation argument would probably work. Or maybe a plugin argument (via build.gradle).
@Jiaxiang if the path is provided that way, how can one access the file? Would you be so kind and provide a bit more insight on that?
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Jiaxiang
02/01/2023, 5:54 PMyou may try use relative path in annotation argument and open/read file with system API, that’s what I can think of, but they are not supported by KSP, which means incremental won’t work.
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Michal Klimczak
02/01/2023, 6:26 PMSorry for maybe asking for something obvious, but what do you mean by system API? I'm not sure which API I can use to access the files from the context of the processor
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Jiaxiang
02/01/2023, 6:27 PMAPIs like
java.io.Filem
Michal Klimczak
02/01/2023, 6:28 PMOK, I didn't imagine that would work, thank you for advice.
Also, any plans to support it for ksp? I've seen the issue but it seems that it hasn't been touched for quite a while, even though it has P1 label
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