1 files changed, 185 insertions, 0 deletions
diff --git a/vendor/github.com/ncruces/go-sqlite3/util/vfsutil/wrap.go b/vendor/github.com/ncruces/go-sqlite3/util/vfsutil/wrap.go
new file mode 100644
index 000000000..ad96547fa
--- /dev/null
+++ b/vendor/github.com/ncruces/go-sqlite3/util/vfsutil/wrap.go
@@ -0,0 +1,185 @@
+// Package vfsutil implements virtual filesystem utilities.
+package vfsutil
+
+import (
+	"github.com/ncruces/go-sqlite3"
+	"github.com/ncruces/go-sqlite3/vfs"
+)
+
+// UnwrapFile unwraps a [vfs.File],
+// possibly implementing [vfs.FileUnwrap],
+// to a concrete type.
+func UnwrapFile[T vfs.File](f vfs.File) (_ T, _ bool) {
+	for {
+		switch t := f.(type) {
+		default:
+			return
+		case T:
+			return t, true
+		case vfs.FileUnwrap:
+			f = t.Unwrap()
+		}
+	}
+}
+
+// WrapOpen helps wrap [vfs.VFS].
+func WrapOpen(f vfs.VFS, name string, flags vfs.OpenFlag) (file vfs.File, _ vfs.OpenFlag, err error) {
+	if f, ok := f.(vfs.VFSFilename); name == "" && ok {
+		return f.OpenFilename(nil, flags)
+	}
+	return f.Open(name, flags)
+}
+
+// WrapOpenFilename helps wrap [vfs.VFSFilename].
+func WrapOpenFilename(f vfs.VFS, name *vfs.Filename, flags vfs.OpenFlag) (file vfs.File, _ vfs.OpenFlag, err error) {
+	if f, ok := f.(vfs.VFSFilename); ok {
+		return f.OpenFilename(name, flags)
+	}
+	return f.Open(name.String(), flags)
+}
+
+// WrapLockState helps wrap [vfs.FileLockState].
+func WrapLockState(f vfs.File) vfs.LockLevel {
+	if f, ok := f.(vfs.FileLockState); ok {
+		return f.LockState()
+	}
+	return vfs.LOCK_EXCLUSIVE + 1 // UNKNOWN_LOCK
+}
+
+// WrapPersistWAL helps wrap [vfs.FilePersistWAL].
+func WrapPersistWAL(f vfs.File) bool {
+	if f, ok := f.(vfs.FilePersistWAL); ok {
+		return f.PersistWAL()
+	}
+	return false
+}
+
+// WrapSetPersistWAL helps wrap [vfs.FilePersistWAL].
+func WrapSetPersistWAL(f vfs.File, keepWAL bool) {
+	if f, ok := f.(vfs.FilePersistWAL); ok {
+		f.SetPersistWAL(keepWAL)
+	}
+}
+
+// WrapPowersafeOverwrite helps wrap [vfs.FilePowersafeOverwrite].
+func WrapPowersafeOverwrite(f vfs.File) bool {
+	if f, ok := f.(vfs.FilePowersafeOverwrite); ok {
+		return f.PowersafeOverwrite()
+	}
+	return false
+}
+
+// WrapSetPowersafeOverwrite helps wrap [vfs.FilePowersafeOverwrite].
+func WrapSetPowersafeOverwrite(f vfs.File, psow bool) {
+	if f, ok := f.(vfs.FilePowersafeOverwrite); ok {
+		f.SetPowersafeOverwrite(psow)
+	}
+}
+
+// WrapChunkSize helps wrap [vfs.FileChunkSize].
+func WrapChunkSize(f vfs.File, size int) {
+	if f, ok := f.(vfs.FileChunkSize); ok {
+		f.ChunkSize(size)
+	}
+}
+
+// WrapSizeHint helps wrap [vfs.FileSizeHint].
+func WrapSizeHint(f vfs.File, size int64) error {
+	if f, ok := f.(vfs.FileSizeHint); ok {
+		return f.SizeHint(size)
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapHasMoved helps wrap [vfs.FileHasMoved].
+func WrapHasMoved(f vfs.File) (bool, error) {
+	if f, ok := f.(vfs.FileHasMoved); ok {
+		return f.HasMoved()
+	}
+	return false, sqlite3.NOTFOUND
+}
+
+// WrapOverwrite helps wrap [vfs.FileOverwrite].
+func WrapOverwrite(f vfs.File) error {
+	if f, ok := f.(vfs.FileOverwrite); ok {
+		return f.Overwrite()
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapSyncSuper helps wrap [vfs.FileSync].
+func WrapSyncSuper(f vfs.File, super string) error {
+	if f, ok := f.(vfs.FileSync); ok {
+		return f.SyncSuper(super)
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapCommitPhaseTwo helps wrap [vfs.FileCommitPhaseTwo].
+func WrapCommitPhaseTwo(f vfs.File) error {
+	if f, ok := f.(vfs.FileCommitPhaseTwo); ok {
+		return f.CommitPhaseTwo()
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapBeginAtomicWrite helps wrap [vfs.FileBatchAtomicWrite].
+func WrapBeginAtomicWrite(f vfs.File) error {
+	if f, ok := f.(vfs.FileBatchAtomicWrite); ok {
+		return f.BeginAtomicWrite()
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapCommitAtomicWrite helps wrap [vfs.FileBatchAtomicWrite].
+func WrapCommitAtomicWrite(f vfs.File) error {
+	if f, ok := f.(vfs.FileBatchAtomicWrite); ok {
+		return f.CommitAtomicWrite()
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapRollbackAtomicWrite helps wrap [vfs.FileBatchAtomicWrite].
+func WrapRollbackAtomicWrite(f vfs.File) error {
+	if f, ok := f.(vfs.FileBatchAtomicWrite); ok {
+		return f.RollbackAtomicWrite()
+	}
+	return sqlite3.NOTFOUND
+}
+
+// WrapCheckpointStart helps wrap [vfs.FileCheckpoint].
+func WrapCheckpointStart(f vfs.File) {
+	if f, ok := f.(vfs.FileCheckpoint); ok {
+		f.CheckpointStart()
+	}
+}
+
+// WrapCheckpointDone helps wrap [vfs.FileCheckpoint].
+func WrapCheckpointDone(f vfs.File) {
+	if f, ok := f.(vfs.FileCheckpoint); ok {
+		f.CheckpointDone()
+	}
+}
+
+// WrapPragma helps wrap [vfs.FilePragma].
+func WrapPragma(f vfs.File, name, value string) (string, error) {
+	if f, ok := f.(vfs.FilePragma); ok {
+		return f.Pragma(name, value)
+	}
+	return "", sqlite3.NOTFOUND
+}
+
+// WrapBusyHandler helps wrap [vfs.FilePragma].
+func WrapBusyHandler(f vfs.File, handler func() bool) {
+	if f, ok := f.(vfs.FileBusyHandler); ok {
+		f.BusyHandler(handler)
+	}
+}
+
+// WrapSharedMemory helps wrap [vfs.FileSharedMemory].
+func WrapSharedMemory(f vfs.File) vfs.SharedMemory {
+	if f, ok := f.(vfs.FileSharedMemory); ok {
+		return f.SharedMemory()
+	}
+	return nil
+}