Mark boring files generated by FUSE as "hidden", then hide in the UI.

Makes for prettier FUSE demos w/ files showing up live in the browser
with websockets.

Change-Id: I41cc9ae0d33db39b4dbbf5b60714cee9a79b7248

pkg/fs/mut.go

@@ -271,6 +271,12 @@ func (n *mutDir) Symlink(req *fuse.SymlinkRequest, intr fuse.Intr) (fuse.Node, f
 	return node, nil
 }
 
+func stupidMacExtendedAttributeName(name string) bool {
+	// TODO: if we supported extended attributes, the OS X finder wouldn't
+	// generate these files anyway.
+	return strings.HasPrefix(name, "._") || name == ".DS_Store"
+}
+
 func (n *mutDir) creat(name string, typ nodeType) (fuse.Node, error) {
 	// Create a Permanode for the file/directory.
 	pr, err := n.fs.client.UploadNewPermanode()
@@ -278,10 +284,22 @@ func (n *mutDir) creat(name string, typ nodeType) (fuse.Node, error) {
 		return nil, err
 	}
 
-	// Add a camliPath:name attribute to the directory permanode.
-	claim := schema.NewSetAttributeClaim(n.permanode, "camliPath:"+name, pr.BlobRef.String())
-	_, err = n.fs.client.UploadAndSignBlob(claim)
-	if err != nil {
+	var grp syncutil.Group
+	grp.Go(func() (err error) {
+		// Add a camliPath:name attribute to the directory permanode.
+		claim := schema.NewSetAttributeClaim(n.permanode, "camliPath:"+name, pr.BlobRef.String())
+		_, err = n.fs.client.UploadAndSignBlob(claim)
+		return
+	})
+	if stupidMacExtendedAttributeName(name) {
+		grp.Go(func() (err error) {
+			// Add a camliPath:name attribute to the directory permanode.
+			claim := schema.NewSetAttributeClaim(pr.BlobRef, "camliDefVis", "hide")
+			_, err = n.fs.client.UploadAndSignBlob(claim)
+			return
+		})
+	}
+	if err := grp.Err(); err != nil {
 		return nil, err
 	}
 

pkg/search/query.go

@@ -322,6 +322,9 @@ type PermanodeConstraint struct {
 	// This is required if any of the items below are used.
 	Attr string `json:"attr"`
 
+	// SkipHidden skips hidden or other boring files.
+	SkipHidden bool `json:"skipHidden"`
+
 	// NumValue optionally tests the number of values this
 	// permanode has for Attr.
 	NumValue *IntConstraint `json:"numValue"`
@@ -713,6 +716,16 @@ func (c *PermanodeConstraint) blobMatches(s *search, br blob.Ref, bm camtypes.Bl
 			return false, err
 		}
 	}
+
+	if c.SkipHidden && corpus != nil {
+		vals := corpus.AppendPermanodeAttrValuesLocked(s.ss[:0], br, "camliDefVis", time.Time{}, s.h.owner)
+		for _, v := range vals {
+			if v == "hide" {
+				return false, nil
+			}
+		}
+	}
+
 	if c.ModTime != nil {
 		if corpus != nil {
 			mt, ok := corpus.PermanodeModtimeLocked(br)

server/camlistored/ui/blob_item_container.js

@@ -307,7 +307,9 @@ camlistore.BlobItemContainer.prototype.exitDocument = function() {
  */
 camlistore.BlobItemContainer.prototype.showRecent = function() {
   this.search({
-    camliType: 'permanode'
+    permanode: {
+      skipHidden: true
+    }
   });
 };