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CommonFuncs: LastStrerrorString added

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This commit is contained in:
Sepalani
2017-08-17 20:12:44 +01:00
parent 4e40fad248
commit 4e5fe6366a
6 changed files with 69 additions and 78 deletions
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38
Source/Core/Common/CommonFuncs.cpp
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@ -22,27 +22,35 @@
#ifdef _WIN32
#include <windows.h>
#define strerror_r(err, buf, len) strerror_s(buf, len, err)
#endif
// Generic function to get last error message.
// Call directly after the command or use the error num.
// This function might change the error code.
std::string GetLastErrorMsg()
{
const size_t buff_size = 256;
char err_str[buff_size];
constexpr size_t BUFFER_SIZE = 256;
// Wrapper function to get last strerror(errno) string.
// This function might change the error code.
std::string LastStrerrorString()
{
char error_message[BUFFER_SIZE];
#ifdef _WIN32
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), err_str, buff_size, nullptr);
#else
// We assume that the XSI-compliant version of strerror_r (returns int) is used
// rather than the GNU version (returns char*). The returned value is stored to
// an int variable to get a compile-time check that the return type is not char*.
const int result = strerror_r(errno, err_str, buff_size);
const int result = strerror_r(errno, error_message, BUFFER_SIZE);
if (result != 0)
return "";
#endif
return std::string(err_str);
return std::string(error_message);
}
#ifdef _WIN32
// Wrapper function to get GetLastError() string.
// This function might change the error code.
std::string GetLastErrorString()
{
char error_message[BUFFER_SIZE];
FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_message, BUFFER_SIZE, nullptr);
return std::string(error_message);
}
#endif