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import com.google.gson.Gson
import com.google.gson.JsonArray
import com.google.gson.JsonObject
import com.google.gson.JsonPrimitive
import org.apache.tools.ant.filters.BaseParamFilterReader
import java.io.File
import java.io.Reader
import java.io.StringReader
class MixinFilterReader(reader: Reader) : BaseParamFilterReader() {
lateinit var sourceRoots: String
val betterReader: StringReader by lazy {
StringReader(run {
val json = Gson().fromJson(reader.readText(), JsonObject::class.java)
val mixinPackage = (json["package"] as JsonPrimitive).asString
val allMixins = JsonArray()
sourceRoots
.split(":")
.map { File(it) }
.forEach { base ->
base.walk()
.filter { it.isFile }
.forEach {
val relativeString = it.toRelativeString(base).replace("\\", "/")
if (relativeString.startsWith(mixinPackage.replace(".", "/") + "/")
&& relativeString.endsWith(".java")
&& it.readText().contains("@Mixin")
)
allMixins.add(
relativeString.replace("/", ".").dropLast(5).drop(mixinPackage.length + 1)
)
}
}
json.add("mixins", allMixins)
Gson().toJson(json)
})
}
override fun read(): Int {
return betterReader.read()
}
}
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