lsf: add 'e' format to show encrypted names and 'o' for original IDs

This brings it up to par with lsjson.

This commit also reworks the framework to use ListJSON internally
which removes duplicated code and makes testing easier.

fs/operations/operations.go

@@ -1479,8 +1479,7 @@ type ListFormat struct {
 	separator string
 	dirSlash  bool
 	absolute  bool
-	output    []func() string
-	entry     fs.DirEntry
+	output    []func(entry *ListJSONItem) string
 	csv       *csv.Writer
 	buf       bytes.Buffer
 }
@@ -1516,76 +1515,91 @@ func (l *ListFormat) SetCSV(useCSV bool) {
 }
 
 // SetOutput sets functions used to create files information
-func (l *ListFormat) SetOutput(output []func() string) {
+func (l *ListFormat) SetOutput(output []func(entry *ListJSONItem) string) {
 	l.output = output
 }
 
 // AddModTime adds file's Mod Time to output
 func (l *ListFormat) AddModTime() {
-	l.AppendOutput(func() string { return l.entry.ModTime().Local().Format("2006-01-02 15:04:05") })
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.ModTime.When.Local().Format("2006-01-02 15:04:05")
+	})
 }
 
 // AddSize adds file's size to output
 func (l *ListFormat) AddSize() {
-	l.AppendOutput(func() string {
-		return strconv.FormatInt(l.entry.Size(), 10)
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return strconv.FormatInt(entry.Size, 10)
 	})
 }
 
+// normalisePath makes sure the path has the correct slashes for the current mode
+func (l *ListFormat) normalisePath(entry *ListJSONItem, remote string) string {
+	if l.absolute && !strings.HasPrefix(remote, "/") {
+		remote = "/" + remote
+	}
+	if entry.IsDir && l.dirSlash {
+		remote += "/"
+	}
+	return remote
+}
+
 // AddPath adds path to file to output
 func (l *ListFormat) AddPath() {
-	l.AppendOutput(func() string {
-		remote := l.entry.Remote()
-		if l.absolute && !strings.HasPrefix(remote, "/") {
-			remote = "/" + remote
-		}
-		_, isDir := l.entry.(fs.Directory)
-		if isDir && l.dirSlash {
-			remote += "/"
-		}
-		return remote
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return l.normalisePath(entry, entry.Path)
+	})
+}
+
+// AddEncrypted adds the encrypted path to file to output
+func (l *ListFormat) AddEncrypted() {
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return l.normalisePath(entry, entry.Encrypted)
 	})
 }
 
 // AddHash adds the hash of the type given to the output
 func (l *ListFormat) AddHash(ht hash.Type) {
-	l.AppendOutput(func() string {
-		o, ok := l.entry.(fs.Object)
-		if !ok {
+	hashName := ht.String()
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		if entry.IsDir {
 			return ""
 		}
-		return hashSum(ht, o)
+		return entry.Hashes[hashName]
 	})
 }
 
 // AddID adds file's ID to the output if known
 func (l *ListFormat) AddID() {
-	l.AppendOutput(func() string {
-		if do, ok := l.entry.(fs.IDer); ok {
-			return do.ID()
-		}
-		return ""
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.ID
+	})
+}
+
+// AddOrigID adds file's Original ID to the output if known
+func (l *ListFormat) AddOrigID() {
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.OrigID
 	})
 }
 
 // AddMimeType adds file's MimeType to the output if known
 func (l *ListFormat) AddMimeType() {
-	l.AppendOutput(func() string {
-		return fs.MimeTypeDirEntry(l.entry)
+	l.AppendOutput(func(entry *ListJSONItem) string {
+		return entry.MimeType
 	})
 }
 
 // AppendOutput adds string generated by specific function to printed output
-func (l *ListFormat) AppendOutput(functionToAppend func() string) {
+func (l *ListFormat) AppendOutput(functionToAppend func(item *ListJSONItem) string) {
 	l.output = append(l.output, functionToAppend)
 }
 
 // Format prints information about the DirEntry in the format defined
-func (l *ListFormat) Format(entry fs.DirEntry) (result string) {
-	l.entry = entry
+func (l *ListFormat) Format(entry *ListJSONItem) (result string) {
 	var out []string
 	for _, fun := range l.output {
-		out = append(out, fun())
+		out = append(out, fun(entry))
 	}
 	if l.csv != nil {
 		l.buf.Reset()