Clean-up add CLI.

Basic params are a struct and addFile/addDir are now methods on
the struct

[ reworded to conform to commit msg guidelines ]

core/commands/add.go

@@ -129,7 +129,8 @@ remains to be implemented.
 					localIgnorePatterns = checkForLocalIgnorePatterns(parentPath, ignoreFilePatterns)
 				}
 
-				rootnd, err := addFile(n, addParams{file, outChan, progress, wrap, hidden, localIgnorePatterns})
+				addParams := adder{n, outChan, progress, wrap, hidden}
+				rootnd, err := addParams.addFile(file, localIgnorePatterns)
 				if err != nil {
 					res.SetError(err, cmds.ErrNormal)
 					return
@@ -235,13 +236,12 @@ remains to be implemented.
 	Type: AddedObject{},
 }
 
-type addParams struct {
-	file               files.File
-	out                chan interface{}
-	progress           bool
-	wrap               bool
-	hidden             bool
-	ignoreFilePatterns []ignore.GitIgnore
+type adder struct {
+	node     *core.IpfsNode
+	out      chan interface{}
+	progress bool
+	wrap     bool
+	hidden   bool
 }
 
 func add(n *core.IpfsNode, reader io.Reader) (*dag.Node, error) {
@@ -258,75 +258,75 @@ func add(n *core.IpfsNode, reader io.Reader) (*dag.Node, error) {
 	return node, nil
 }
 
-func addFile(n *core.IpfsNode, params addParams) (*dag.Node, error) {
+func (params *adder) addFile(file files.File, ignoreFilePatterns []ignore.GitIgnore) (*dag.Node, error) {
 	// Check if file is hidden
-	if fileIsHidden := files.IsHidden(params.file); fileIsHidden && !params.hidden {
-		log.Debugf("%s is hidden, skipping", params.file.FileName())
-		return nil, &hiddenFileError{params.file.FileName()}
+	if fileIsHidden := files.IsHidden(file); fileIsHidden && !params.hidden {
+		log.Debugf("%s is hidden, skipping", file.FileName())
+		return nil, &hiddenFileError{file.FileName()}
 	}
 
 	// Check for ignore files matches
-	for i := range params.ignoreFilePatterns {
-		if params.ignoreFilePatterns[i].MatchesPath(params.file.FileName()) {
-			log.Debugf("%s is ignored file, skipping", params.file.FileName())
-			return nil, &ignoreFileError{params.file.FileName()}
+	for i := range ignoreFilePatterns {
+		if ignoreFilePatterns[i].MatchesPath(file.FileName()) {
+			log.Debugf("%s is ignored file, skipping", file.FileName())
+			return nil, &ignoreFileError{file.FileName()}
 		}
 	}
 
 	// Check if "file" is actually a directory
-	if params.file.IsDirectory() {
-		return addDir(n, params)
+	if file.IsDirectory() {
+		return params.addDir(file, ignoreFilePatterns)
 	}
 
 	// if the progress flag was specified, wrap the file so that we can send
 	// progress updates to the client (over the output channel)
-	var reader io.Reader = params.file
+	var reader io.Reader = file
 	if params.progress {
-		reader = &progressReader{file: params.file, out: params.out}
+		reader = &progressReader{file: file, out: params.out}
 	}
 
 	if params.wrap {
-		p, dagnode, err := coreunix.AddWrapped(n, reader, path.Base(params.file.FileName()))
+		p, dagnode, err := coreunix.AddWrapped(params.node, reader, path.Base(file.FileName()))
 		if err != nil {
 			return nil, err
 		}
 		params.out <- &AddedObject{
 			Hash: p,
-			Name: params.file.FileName(),
+			Name: file.FileName(),
 		}
 		return dagnode, nil
 	}
 
-	dagnode, err := add(n, reader)
+	dagnode, err := add(params.node, reader)
 	if err != nil {
 		return nil, err
 	}
 
-	log.Infof("adding file: %s", params.file.FileName())
-	if err := outputDagnode(params.out, params.file.FileName(), dagnode); err != nil {
+	log.Infof("adding file: %s", file.FileName())
+	if err := outputDagnode(params.out, file.FileName(), dagnode); err != nil {
 		return nil, err
 	}
 	return dagnode, nil
 }
 
-func addDir(n *core.IpfsNode, params addParams) (*dag.Node, error) {
+func (params *adder) addDir(file files.File, ignoreFilePatterns []ignore.GitIgnore) (*dag.Node, error) {
 
 	tree := &dag.Node{Data: ft.FolderPBData()}
-	log.Infof("adding directory: %s", params.file.FileName())
+	log.Infof("adding directory: %s", file.FileName())
 
 	// Check for an .ipfsignore file that is local to this Dir and append to the incoming
-	localIgnorePatterns := checkForLocalIgnorePatterns(params.file.FileName(), params.ignoreFilePatterns)
+	localIgnorePatterns := checkForLocalIgnorePatterns(file.FileName(), ignoreFilePatterns)
 
 	for {
-		file, err := params.file.NextFile()
+		file, err := file.NextFile()
 		if err != nil && err != io.EOF {
 			return nil, err
 		}
 		if file == nil {
 			break
 		}
 
-		node, err := addFile(n, addParams{file, params.out, params.progress, false, params.hidden, localIgnorePatterns})
+		node, err := params.addFile(file, localIgnorePatterns)
 		if _, ok := err.(*hiddenFileError); ok {
 			// hidden file error, set the node to nil for below
 			node = nil
@@ -347,12 +347,12 @@ func addDir(n *core.IpfsNode, params addParams) (*dag.Node, error) {
 		}
 	}
 
-	err := outputDagnode(params.out, params.file.FileName(), tree)
+	err := outputDagnode(params.out, file.FileName(), tree)
 	if err != nil {
 		return nil, err
 	}
 
-	_, err = n.DAG.Add(tree)
+	_, err = params.node.DAG.Add(tree)
 	if err != nil {
 		return nil, err
 	}