Emma Thorpe
d5f67c6de5
Build and publish container / build (pull_request) Successful in 2m16s
Rockbox's MAX_PATH is 260, defined in firmware/include/fs_defines.h and used to size the directory entry buffer in dir.h. It bounds the path as the device sees it, so the directory the mirror is copied into spends part of the same budget; --device-prefix accounts for that and defaults to /Music. Over-budget paths are shortened from the deepest component outward. The track name carries the least navigational value and the artist directory the most, so the filename is cut first and the artist only if nothing else will serve. A shortened component keeps its extension and gains four hex digits of the original name: two long titles sharing a prefix cut to the same string otherwise, and a silent collision between two tracks is a worse outcome than an ugly filename. The result is stable. The same source always yields the same shortened name, so one pass does not rename what the last one wrote -- an unstable scheme would churn the whole mirror every six hours. A path too deeply nested to fit without reducing every component to nonsense is left alone and reported rather than mangled. Migration now tries more than one previous naming, because there is more than one. A mirror already running with --fat32-safe holds sanitised but unshortened paths, and matching only the original unsanitised name would have re-encoded every one of them instead of moving it. The checker gains the same two options, since it was measuring the mirror-relative path against a limit that applies to the device-absolute one, and so under-reported by the length of the destination directory.