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[SaveData] Handle size == 0 in CreateFile

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wheremyfoodat 2023-06-11 12:31:42 +03:00 • committed by GitHub
parent 8a852d2cab
commit 5fa4e9e178
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1 changed files with 10 additions and 7 deletions
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13
src/core/fs/archive_save_data.cpp
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@ -5,9 +5,6 @@
namespace fs = std::filesystem; namespace fs = std::filesystem;
FSResult SaveDataArchive::createFile(const FSPath& path, u64 size) { FSResult SaveDataArchive::createFile(const FSPath& path, u64 size) {
if (size == 0)
Helpers::panic("SaveData file does not support size == 0");
if (path.type == PathType::UTF16) { if (path.type == PathType::UTF16) {
if (!isPathSafe<PathType::UTF16>(path)) if (!isPathSafe<PathType::UTF16>(path))
Helpers::panic("Unsafe path in SaveData::CreateFile"); Helpers::panic("Unsafe path in SaveData::CreateFile");
@ -18,9 +15,15 @@ FSResult SaveDataArchive::createFile(const FSPath& path, u64 size) {
if (fs::exists(p)) if (fs::exists(p))
return FSResult::AlreadyExists; return FSResult::AlreadyExists;
// Create a file of size "size" by creating an empty one, seeking to size - 1 and just writing a 0 there
IOFile file(p.string().c_str(), "wb"); IOFile file(p.string().c_str(), "wb");
if (file.seek(size - 1, SEEK_SET) && file.writeBytes("", 1).second == 1) {
// If the size is 0, leave the file empty and return success
if (size == 0) {
return FSResult::Success;
}
// If it is not empty, seek to size - 1 and write a 0 to create a file of size "size"
else if (file.seek(size - 1, SEEK_SET) && file.writeBytes("", 1).second == 1) {
return FSResult::Success; return FSResult::Success;
} }