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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmFileLockResult.h"
#include <errno.h>
#include <string.h>
cmFileLockResult cmFileLockResult::MakeOk()
{
return cmFileLockResult(OK, 0);
}
cmFileLockResult cmFileLockResult::MakeSystem()
{
#if defined(_WIN32)
const Error lastError = GetLastError();
#else
const Error lastError = errno;
#endif
return cmFileLockResult(SYSTEM, lastError);
}
cmFileLockResult cmFileLockResult::MakeTimeout()
{
return cmFileLockResult(TIMEOUT, 0);
}
cmFileLockResult cmFileLockResult::MakeAlreadyLocked()
{
return cmFileLockResult(ALREADY_LOCKED, 0);
}
cmFileLockResult cmFileLockResult::MakeInternal()
{
return cmFileLockResult(INTERNAL, 0);
}
cmFileLockResult cmFileLockResult::MakeNoFunction()
{
return cmFileLockResult(NO_FUNCTION, 0);
}
bool cmFileLockResult::IsOk() const
{
return this->Type == OK;
}
std::string cmFileLockResult::GetOutputMessage() const
{
switch (this->Type) {
case OK:
return "0";
case SYSTEM:
#if defined(_WIN32)
{
char* errorText = NULL;
// http://stackoverflow.com/a/455533/2288008
DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS;
::FormatMessageA(flags, NULL, this->ErrorValue,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPSTR)&errorText, 0, NULL);
if (errorText != NULL) {
const std::string message = errorText;
::LocalFree(errorText);
return message;
} else {
return "Internal error (FormatMessageA failed)";
}
}
#else
return strerror(this->ErrorValue);
#endif
case TIMEOUT:
return "Timeout reached";
case ALREADY_LOCKED:
return "File already locked";
case NO_FUNCTION:
return "'GUARD FUNCTION' not used in function definition";
case INTERNAL:
default:
return "Internal error";
}
}
cmFileLockResult::cmFileLockResult(ErrorType typeValue, Error errorValue)
: Type(typeValue)
, ErrorValue(errorValue)
{
}
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