hugofs: Fix golint issues

Fix godoc issues and the following:

hugofs/noop_fs.go:25:2: error var noOpErr should have name of the form errFoo

1 files changed, 16 insertions, 0 deletions

diff --git a/hugofs/language_fs.go b/hugofs/language_fs.go
index 45cad8722..ce331fca4 100644
--- a/hugofs/language_fs.go
+++ b/hugofs/language_fs.go
@@ -51,6 +51,7 @@ type FilePather interface {
 	BaseDir() string
 }
 
+// LanguageDirsMerger implements the afero.DirsMerger interface.
 var LanguageDirsMerger = func(lofi, bofi []os.FileInfo) ([]os.FileInfo, error) {
 	m := make(map[string]*LanguageFileInfo)
 
@@ -84,6 +85,8 @@ var LanguageDirsMerger = func(lofi, bofi []os.FileInfo) ([]os.FileInfo, error) {
 	return merged, nil
 }
 
+// LanguageFileInfo is a super-set of os.FileInfo with additional information
+// about the file in relation to its Hugo language.
 type LanguageFileInfo struct {
 	os.FileInfo
 	lang                string
@@ -99,22 +102,27 @@ type LanguageFileInfo struct {
 	weight int
 }
 
+// Filename returns a file's real filename.
 func (fi *LanguageFileInfo) Filename() string {
 	return fi.realFilename
 }
 
+// Path returns a file's relative filename.
 func (fi *LanguageFileInfo) Path() string {
 	return fi.relFilename
 }
 
+// RealName returns a file's real name.
 func (fi *LanguageFileInfo) RealName() string {
 	return fi.realName
 }
 
+// BaseDir returns a file's base directory.
 func (fi *LanguageFileInfo) BaseDir() string {
 	return fi.baseDir
 }
 
+// Lang returns a file's language.
 func (fi *LanguageFileInfo) Lang() string {
 	return fi.lang
 }
@@ -157,6 +165,7 @@ func (l *languageFile) Readdir(c int) (ofi []os.FileInfo, err error) {
 	return fis, err
 }
 
+// LanguageFs represents a language filesystem.
 type LanguageFs struct {
 	// This Fs is usually created with a BasePathFs
 	basePath   string
@@ -166,6 +175,7 @@ type LanguageFs struct {
 	afero.Fs
 }
 
+// NewLanguageFs creates a new LanguageFs.
 func NewLanguageFs(lang string, languages map[string]bool, fs afero.Fs) *LanguageFs {
 	if lang == "" {
 		panic("no lang set for the language fs")
@@ -181,10 +191,12 @@ func NewLanguageFs(lang string, languages map[string]bool, fs afero.Fs) *Languag
 	return &LanguageFs{lang: lang, languages: languages, basePath: basePath, Fs: fs, nameMarker: marker}
 }
 
+// Lang returns a language filesystem's language.
 func (fs *LanguageFs) Lang() string {
 	return fs.lang
 }
 
+// Stat returns the os.FileInfo of a given file.
 func (fs *LanguageFs) Stat(name string) (os.FileInfo, error) {
 	name, err := fs.realName(name)
 	if err != nil {
@@ -199,6 +211,7 @@ func (fs *LanguageFs) Stat(name string) (os.FileInfo, error) {
 	return fs.newLanguageFileInfo(name, fi)
 }
 
+// Open opens the named file for reading.
 func (fs *LanguageFs) Open(name string) (afero.File, error) {
 	name, err := fs.realName(name)
 	if err != nil {
@@ -212,6 +225,9 @@ func (fs *LanguageFs) Open(name string) (afero.File, error) {
 	return &languageFile{File: f, fs: fs}, nil
 }
 
+// LstatIfPossible returns the os.FileInfo structure describing a given file.
+// It attempts to use Lstat if supported or defers to the os.  In addition to
+// the FileInfo, a boolean is returned telling whether Lstat was called.
 func (fs *LanguageFs) LstatIfPossible(name string) (os.FileInfo, bool, error) {
 	name, err := fs.realName(name)
 	if err != nil {