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/*
* Copyright (C) 2020 Square, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package okio
import kotlinx.cinterop.ByteVarOf
import kotlinx.cinterop.allocArray
import kotlinx.cinterop.memScoped
import platform.windows.DWORD
import platform.windows.ERROR_FILE_NOT_FOUND
import platform.windows.ERROR_PATH_NOT_FOUND
import platform.windows.FORMAT_MESSAGE_FROM_SYSTEM
import platform.windows.FORMAT_MESSAGE_IGNORE_INSERTS
import platform.windows.FormatMessageA
import platform.windows.GetLastError
import platform.windows.LANG_NEUTRAL
import platform.windows.SUBLANG_DEFAULT
internal fun lastErrorToIOException(): IOException {
val lastError = GetLastError()
return when (lastError.toInt()) {
ERROR_FILE_NOT_FOUND, ERROR_PATH_NOT_FOUND -> FileNotFoundException(lastErrorString(lastError))
else -> IOException(lastErrorString(lastError))
}
}
internal fun lastErrorString(lastError: DWORD): String {
memScoped {
val messageMaxSize = 2048
val message = allocArray<ByteVarOf<Byte>>(messageMaxSize)
FormatMessageA(
dwFlags = (FORMAT_MESSAGE_FROM_SYSTEM or FORMAT_MESSAGE_IGNORE_INSERTS).toUInt(),
lpSource = null,
dwMessageId = lastError,
dwLanguageId = (SUBLANG_DEFAULT * 1024 + LANG_NEUTRAL).toUInt(), // MAKELANGID macro.
lpBuffer = message,
nSize = messageMaxSize.toUInt(),
Arguments = null,
)
return Buffer().writeNullTerminated(message).readUtf8().trim()
}
}
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