Verified Commit 9a90caea authored byBrowse files
file-cache: Remove as a map source
This commit makes two BREAKING CHANGES to the file cache format! - There is now an integer `modtime` column in the SQLite database. This is easier than using the filesystem modification time since we already need to query the database for the ETag. - There is no longer a .png extension on cached files. There's no reason to assume the file is a PNG image, so it was unnecessary. Makes ShumateFileCache its own class, rather than a subclass of ShumateTileCache. It is curretly unused, but in the near future it will be directly used by ShumateNetworkTileSource to cache tiles. As part of this change, ShumateFileCache no longer fills tiles; it has asynchronous methods to store and retrieve tile data, but it treats this data as opaque. It is up to the user of the file cache to decode tile data. Part of #15.
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