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chunker: fix case-insensitive comparison on local without metadata 

Before this change, chunker would erroneously consider two different paths to be
equal if, due to special characters, they normalized to equal-folding strings in
Standard Encoding, but not otherwise. This caused base objects to get moved when
they should not have been. This change fixes the issue, which was discovered on
the bisync integration tests.

Ideally it should also be fixed when the base Fs is non-local, but there's not an
easy way at the moment to reference the wrapped Fs's encoding, at least without
breaking encapsulation.
This commit is contained in:
nielash 2024-04-09 21:01:32 -04:00 committed by Nick Craig-Wood
parent 8524afa9ce
commit fe6c9aa4da
1 changed files with 6 additions and 0 deletions
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6
backend/chunker/chunker.go
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@ -29,6 +29,7 @@ import (
"github.com/rclone/rclone/fs/fspath"
"github.com/rclone/rclone/fs/hash"
"github.com/rclone/rclone/fs/operations"
"github.com/rclone/rclone/lib/encoder"
)
// Chunker's composite files have one or more chunks
@ -963,6 +964,11 @@ func (f *Fs) scanObject(ctx context.Context, remote string, quickScan bool) (fs.
}
if caseInsensitive {
sameMain = strings.EqualFold(mainRemote, remote)
if sameMain && f.base.Features().IsLocal {
// on local, make sure the EqualFold still holds true when accounting for encoding.
// sometimes paths with special characters will only normalize the same way in Standard Encoding.
sameMain = strings.EqualFold(encoder.OS.FromStandardPath(mainRemote), encoder.OS.FromStandardPath(remote))
}
} else {
sameMain = mainRemote == remote
}