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qpdf/libqpdf/QPDFSystemError.cc

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#include <qpdf/QPDFSystemError.hh>
#include <qpdf/QUtil.hh>
#include <string.h>
QPDFSystemError::QPDFSystemError(std::string const& description,
int system_errno) :
std::runtime_error(createWhat(description, system_errno)),
description(description),
system_errno(system_errno)
{
}
QPDFSystemError::~QPDFSystemError() noexcept
{
}
std::string
QPDFSystemError::createWhat(std::string const& description,
int system_errno)
{
std::string message;
#ifdef _MSC_VER
// "94" is mentioned in the MSVC docs, but it's still safe if the
// message is longer. strerror_s is a templated function that
// knows the size of buf and truncates.
char buf[94];
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if (strerror_s(buf, system_errno) != 0)
{
message = description + ": failed with an unknown error";
}
else
{
message = description + ": " + buf;
}
#else
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message = description + ": " + strerror(system_errno);
#endif
return message;
}
std::string const&
QPDFSystemError::getDescription() const
{
return this->description;
}
int
QPDFSystemError::getErrno() const
{
return this->system_errno;
}