RosettaCodeData/Task/Call-a-function-in-a-shared-library/Kotlin/call-a-function-in-a-shared-library-2.kotlin
2018-06-22 20:57:24 +00:00

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Text

// Kotlin Native version 0.5
import kotlinx.cinterop.*
import platform.posix.*
import platform.linux.*
typealias Func = (String)-> Int
var handle = 0
fun myOpenImage(s: String): Int {
fprintf(stderr, "internal openImage opens %s...\n", s)
return handle++
}
fun main(args: Array<String>) {
var imgHandle: Int
val imglib = dlopen("./fakeimglib.so", RTLD_LAZY)
if (imglib != null) {
val fp = dlsym(imglib, "openimage")
if (fp != null) {
val extOpenImage: CPointer<CFunction<Func>> = fp.reinterpret()
imgHandle = extOpenImage("fake.img")
}
else {
imgHandle = myOpenImage("fake.img")
}
dlclose(imglib)
}
else {
imgHandle = myOpenImage("fake.img")
}
println("opened with handle $imgHandle")
}