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e674a39b87
* Fix #6952: prevent deck loss when saving to a full disk DeckLoader::saveToFile() opened the target with QFile in WriteOnly mode, which truncates the existing file to 0 bytes the moment it is opened. The serializers (DeckList::saveToFile_Native/_Plain) always return true and the result of flush() was ignored, so a write that failed part-way -- e.g. because the disk was full -- left a 0-byte file behind yet was still reported (and logged) as a successful save. The same truncate-then-write pattern in updateLastLoadedTimestamp() could destroy a deck on load. Switch both paths to QSaveFile, which writes to a temporary file and only atomically replaces the target if commit() succeeds. On any write or flush failure commit() returns false, the original deck is left untouched, and the failure is logged instead of being reported as success. * Use QSaveFile in convertToCockatriceFormat() too convertToCockatriceFormat() had the same data-loss pattern: QFile WriteOnly truncated the .cod, saveToFile_Native() always returns true, and the original file was then removed unconditionally -- so a full disk during conversion wrote a 0-byte .cod and then deleted the source deck. Switch to QSaveFile (write + atomic commit), remove the original only after a successful commit, and move the format check ahead of the file open so an already-Cockatrice or unsupported deck never truncates or deletes anything. Raised in review by ZeldaZach. |
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