Add QuickLook thumbnail artifacts for macOS - #339
Merged
Merged
Conversation
QuickLook Thumbnails reads index.sqlite and thumbnails.data in each com.apple.QuickLook.thumbnailcache folder: one row per thumbnail, joined to its basic_files row (the thumbnail's file_id with the top bit cleared), with the file ID, the size and modification date from the row's version archive, the generator, the last hit time and hit count, and the bitmap rendered as a PNG. Only 8-bit BGRA bitmaps with premultiplied alpha (bitmapinfo 0x2002) are rendered; others are counted in the run log. A file versioned without a thumbnail gets its own row. A cache with the older files table is logged and not read. QuickLook Cloud Thumbnails reads cloudthumbnails.db in the same folder: last hit time, last seen path, document ID, volume UUID and size as stored. PNGs are written with the standard library. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Adds two macOS artifacts from the QuickLook thumbnail cache (com.apple.QuickLook.thumbnailcache):
Only 8-bit BGRA bitmaps with premultiplied alpha are rendered; anything else is counted in the run log. Codes and undocumented values are reported as stored.
🤖 Generated with Claude Code