fmtlib/fmt
1
0
Fork 1
mirror of https://github.com/fmtlib/fmt.git synced 2025-11-28 13:19:48 +01:00
Code Issues Packages Projects Releases Wiki Activity

Replace windows_error with system_error

Browse Source
This commit is contained in:
Victor Zverovich
2021-05-06 09:20:46 -07:00
parent 5238055f40
commit 4b885c8633
7 changed files with 76 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
include/fmt/os.h
View File

@@ -9,10 +9,11 @@
#define FMT_OS_H_
#include <cerrno>
#include <clocale> // for locale_t
#include <clocale> // locale_t
#include <cstddef>
#include <cstdio>
#include <cstdlib> // for strtod_l
#include <cstdlib> // strtod_l
#include <system_error> // std::system_error
#if defined __APPLE__ || defined(__FreeBSD__)
# include <xlocale.h> // for LC_NUMERIC_MASK on OS X
@@ -154,45 +155,42 @@ FMT_API void format_windows_error(buffer<char>& out, int error_code,
string_view message) FMT_NOEXCEPT;
} // namespace detail
/** A Windows error. */
class windows_error : public system_error {
private:
FMT_API void init(int error_code, string_view format_str, format_args args);
FMT_API std::system_error vwindows_error(int error_code, string_view format_str,
format_args args);
public:
/**
\rst
Constructs a :class:`fmt::windows_error` object with the description
of the form
/**
\rst
Constructs a :class:`std::system_error` object with the description
of the form
.. parsed-literal::
*<message>*: *<system-message>*
.. parsed-literal::
*<message>*: *<system-message>*
where *<message>* is the formatted message and *<system-message>* is the
system message corresponding to the error code.
*error_code* is a Windows error code as given by ``GetLastError``.
If *error_code* is not a valid error code such as -1, the system message
will look like "error -1".
where *<message>* is the formatted message and *<system-message>* is the
system message corresponding to the error code.
*error_code* is a Windows error code as given by ``GetLastError``.
If *error_code* is not a valid error code such as -1, the system message
will look like "error -1".
**Example**::
**Example**::
// This throws a windows_error with the description
// cannot open file 'madeup': The system cannot find the file specified.
// or similar (system message may vary).
const char *filename = "madeup";
LPOFSTRUCT of = LPOFSTRUCT();
HFILE file = OpenFile(filename, &of, OF_READ);
if (file == HFILE_ERROR) {
throw fmt::windows_error(GetLastError(),
"cannot open file '{}'", filename);
}
\endrst
*/
template <typename... Args>
windows_error(int error_code, string_view message, const Args&... args) {
init(error_code, message, make_format_args(args...));
}
};
// This throws a windows_error with the description
// cannot open file 'madeup': The system cannot find the file specified.
// or similar (system message may vary).
const char *filename = "madeup";
LPOFSTRUCT of = LPOFSTRUCT();
HFILE file = OpenFile(filename, &of, OF_READ);
if (file == HFILE_ERROR) {
throw fmt::windows_error(GetLastError(),
"cannot open file '{}'", filename);
}
\endrst
*/
template <typename... Args>
std::system_error windows_error(int error_code, string_view message,
const Args&... args) {
return vwindows_error(error_code, message, make_format_args(args...));
}
// Reports a Windows error without throwing an exception.
// Can be used to report errors from destructors.