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[ntcore] backup file if it fails to open #6523

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merged 3 commits into from
Apr 27, 2024
Merged

[ntcore] backup file if it fails to open #6523

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[ntcore] backup file if it fails to open
spacey-sooty Apr 26, 2024
f048134
Formatting fixes
github-actions[bot] Apr 26, 2024
212c22b
fix
spacey-sooty Apr 26, 2024
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4 changes: 4 additions & 0 deletions ntcore/src/main/native/cpp/NetworkServer.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
#include <stdint.h>

#include <atomic>
#include <filesystem>
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#include <span>
#include <system_error>
#include <vector>
Expand Down Expand Up @@ -359,6 +360,9 @@ void NetworkServer::LoadPersistent() {
"could not open persistent file '{}': {} "
"(this can be ignored if you aren't expecting persistent values)",
m_persistentFilename, ec.message());
// backup file
fs::copy_file(m_persistentFilename, m_persistentFilename + ".bak",
std::filesystem::copy_options::overwrite_existing, ec);
// try to write an empty file so it doesn't happen again
wpi::raw_fd_ostream os{m_persistentFilename, ec, fs::F_Text};
if (ec.value() == 0) {
Expand Down
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