initial commit

vfs/sync/sync.go

@@ -0,0 +1,76 @@
+package sync
+
+import (
+	"fmt"
+	"s1d3sw1ped/SteamCache2/vfs"
+	"sync"
+)
+
+// Ensure SyncFS implements VFS.
+var _ vfs.VFS = (*SyncFS)(nil)
+
+type SyncFS struct {
+	vfs vfs.VFS
+	mu  sync.RWMutex
+}
+
+func New(vfs vfs.VFS) *SyncFS {
+	return &SyncFS{
+		vfs: vfs,
+		mu:  sync.RWMutex{},
+	}
+}
+
+// Name returns the name of the file system.
+func (sfs *SyncFS) Name() string {
+	return fmt.Sprintf("SyncFS(%s)", sfs.vfs.Name())
+}
+
+// Size returns the total size of all files in the file system.
+func (sfs *SyncFS) Size() int64 {
+	sfs.mu.RLock()
+	defer sfs.mu.RUnlock()
+
+	return sfs.vfs.Size()
+}
+
+// Set sets the value of key as src.
+// Setting the same key multiple times, the last set call takes effect.
+func (sfs *SyncFS) Set(key string, src []byte) error {
+	sfs.mu.Lock()
+	defer sfs.mu.Unlock()
+
+	return sfs.vfs.Set(key, src)
+}
+
+// Delete deletes the value of key.
+func (sfs *SyncFS) Delete(key string) error {
+	sfs.mu.Lock()
+	defer sfs.mu.Unlock()
+
+	return sfs.vfs.Delete(key)
+}
+
+// Get gets the value of key to dst, and returns dst no matter whether or not there is an error.
+func (sfs *SyncFS) Get(key string) ([]byte, error) {
+	sfs.mu.RLock()
+	defer sfs.mu.RUnlock()
+
+	return sfs.vfs.Get(key)
+}
+
+// Stat returns the FileInfo of key.
+func (sfs *SyncFS) Stat(key string) (*vfs.FileInfo, error) {
+	sfs.mu.RLock()
+	defer sfs.mu.RUnlock()
+
+	return sfs.vfs.Stat(key)
+}
+
+// StatAll returns the FileInfo of all keys.
+func (sfs *SyncFS) StatAll() []*vfs.FileInfo {
+	sfs.mu.RLock()
+	defer sfs.mu.RUnlock()
+
+	return sfs.vfs.StatAll()
+}