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Make error messages portable

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This commit is contained in:
Grant Moyer 2022-02-25 12:56:22 -05:00
parent a595b61e0f
commit 8f3fbebede
1 changed files with 10 additions and 2 deletions
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12
src/modules/keyboard_state.cpp
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@ -21,13 +21,21 @@ class errno_error : public std::runtime_error {
code(code) {} code(code) {}
private: private:
static auto getErrorMsg(int err, const char* msg) -> std::string { static auto getErrorMsg(int err, const char* msg) -> std::string {
const auto errno_name = strerrorname_np(err);
const auto errno_str = strerror(err);
std::string error_msg{msg}; std::string error_msg{msg};
error_msg += ": "; error_msg += ": ";
#ifdef _GNU_SOURCE
// strerrorname_np gets the error code's name; it's nice to have, but it's a GNU extension
const auto errno_name = strerrorname_np(err);
error_msg += errno_name; error_msg += errno_name;
error_msg += " "; error_msg += " ";
#endif
// strerror(3) man page says 1024 should be a big enough buffer to avoid ERANGE
char errno_str[1024] = {};
strerror_r(err, errno_str, sizeof errno_str);
error_msg += errno_str; error_msg += errno_str;
return error_msg; return error_msg;
} }
}; };