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Make error messages portable
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parent
a595b61e0f
commit
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@ -21,13 +21,21 @@ class errno_error : public std::runtime_error {
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code(code) {}
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code(code) {}
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private:
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private:
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static auto getErrorMsg(int err, const char* msg) -> std::string {
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static auto getErrorMsg(int err, const char* msg) -> std::string {
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const auto errno_name = strerrorname_np(err);
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const auto errno_str = strerror(err);
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std::string error_msg{msg};
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std::string error_msg{msg};
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error_msg += ": ";
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error_msg += ": ";
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#ifdef _GNU_SOURCE
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// strerrorname_np gets the error code's name; it's nice to have, but it's a GNU extension
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const auto errno_name = strerrorname_np(err);
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error_msg += errno_name;
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error_msg += errno_name;
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error_msg += " ";
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error_msg += " ";
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#endif
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// strerror(3) man page says 1024 should be a big enough buffer to avoid ERANGE
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char errno_str[1024] = {};
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strerror_r(err, errno_str, sizeof errno_str);
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error_msg += errno_str;
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error_msg += errno_str;
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return error_msg;
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return error_msg;
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}
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}
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};
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};
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