You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
2.4 KiB
69 lines
2.4 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2016 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "android-base/errors.h"
|
||
|
|
|
||
|
|
#include <windows.h>
|
||
|
|
|
||
|
|
#include "android-base/stringprintf.h"
|
||
|
|
#include "android-base/strings.h"
|
||
|
|
#include "android-base/utf8.h"
|
||
|
|
|
||
|
|
// A Windows error code is a DWORD. It's simpler to use an int error code for
|
||
|
|
// both Unix and Windows if possible, but if this fails we'll need a different
|
||
|
|
// function signature for each.
|
||
|
|
static_assert(sizeof(int) >= sizeof(DWORD),
|
||
|
|
"Windows system error codes are too large to fit in an int.");
|
||
|
|
|
||
|
|
namespace android {
|
||
|
|
namespace base {
|
||
|
|
|
||
|
|
static constexpr DWORD kErrorMessageBufferSize = 256;
|
||
|
|
|
||
|
|
std::string SystemErrorCodeToString(int int_error_code) {
|
||
|
|
WCHAR msgbuf[kErrorMessageBufferSize];
|
||
|
|
DWORD error_code = int_error_code;
|
||
|
|
DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
|
||
|
|
DWORD len = FormatMessageW(flags, nullptr, error_code, 0, msgbuf,
|
||
|
|
kErrorMessageBufferSize, nullptr);
|
||
|
|
if (len == 0) {
|
||
|
|
return android::base::StringPrintf(
|
||
|
|
"Error %lu while retrieving message for error %lu", GetLastError(),
|
||
|
|
error_code);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Convert UTF-16 to UTF-8.
|
||
|
|
std::string msg;
|
||
|
|
if (!android::base::WideToUTF8(msgbuf, &msg)) {
|
||
|
|
return android::base::StringPrintf(
|
||
|
|
"Error %lu while converting message for error %lu from UTF-16 to UTF-8",
|
||
|
|
GetLastError(), error_code);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Messages returned by the system end with line breaks.
|
||
|
|
msg = android::base::Trim(msg);
|
||
|
|
|
||
|
|
// There are many Windows error messages compared to POSIX, so include the
|
||
|
|
// numeric error code for easier, quicker, accurate identification. Use
|
||
|
|
// decimal instead of hex because there are decimal ranges like 10000-11999
|
||
|
|
// for Winsock.
|
||
|
|
android::base::StringAppendF(&msg, " (%lu)", error_code);
|
||
|
|
return msg;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace base
|
||
|
|
} // namespace android
|