PosixApiException

src/posixMain/kotlin/ru/landgrafhomyak/utility/kotlin_native_interop_stdlib_0/PosixApiException.kt

@@ -0,0 +1,68 @@
+package ru.landgrafhomyak.utility.kotlin_native_interop_stdlib_0
+
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.toKStringFromUtf8
+import platform.posix.strerror
+import platform.posix.errno as getLastErrno
+
+public class PosixApiException : OsException {
+	private val errno: Int
+	private val nativeMessage: String?
+
+	public constructor(errno: Int, nativeMessage: String?) : super() {
+		this.errno = errno
+		this.nativeMessage = nativeMessage
+	}
+
+	public constructor(errno: Int, nativeMessage: String?, customMessage: String?) : super(customMessage) {
+		this.errno = errno
+		this.nativeMessage = nativeMessage
+	}
+
+	public constructor(errno: Int, nativeMessage: String?, customMessage: String?, cause: Throwable?) : super(customMessage, cause) {
+		this.errno = errno
+		this.nativeMessage = nativeMessage
+	}
+
+	public constructor(errno: Int, nativeMessage: String?, cause: Throwable?) : super(cause) {
+		this.errno = errno
+		this.nativeMessage = nativeMessage
+	}
+
+	override fun toString(): String =
+		"<windows api exception errno=${this.errno}>"
+
+	public companion object {
+		public fun throwFromLastWindowsErr(): Nothing {
+			throw this.formatFromLastWindowsErr()
+		}
+
+		public fun throwFromWindowsErrCode(code: Int): Nothing {
+			throw this.formatFromWindowsErrCode(code)
+		}
+
+		public fun formatFromLastWindowsErr(): PosixApiException = this.formatFromWindowsErrCode(getLastErrno)
+
+		public fun formatFromWindowsErrCode(code: Int): PosixApiException {
+			var err = PosixApiException(errno = code, nativeMessage = null, customMessage = "[errno=${code}]")
+			try {
+				val nativeMessage = this.getNativeMessageByErrno(code)
+				err = PosixApiException(errno = code, nativeMessage = nativeMessage, "[errno=${err}] ${nativeMessage}")
+			} catch (newErr: Throwable) {
+				err.addSuppressed(newErr)
+			}
+			return err
+		}
+
+		@OptIn(ExperimentalForeignApi::class)
+		public fun getNativeMessageByErrno(code: Int): String {
+			val raw = strerror(code)
+			if (raw != null) {
+				return raw.toKStringFromUtf8()
+			} else {
+				val strerrErrno = getLastErrno
+				throw PosixApiException(errno = strerrErrno, nativeMessage = null, "[errno=${strerrErrno}]")
+			}
+		}
+	}
+}