Make sure golint pass on the code base

reader/feed/handler.go

@@ -92,7 +92,7 @@ func (h *Handler) CreateFeed(userID, categoryID int64, url string) (*model.Feed,
 func (h *Handler) RefreshFeed(userID, feedID int64) error {
 	defer helper.ExecutionTime(time.Now(), fmt.Sprintf("[Handler:RefreshFeed] feedID=%d", feedID))
 
-	originalFeed, err := h.store.GetFeedById(userID, feedID)
+	originalFeed, err := h.store.FeedByID(userID, feedID)
 	if err != nil {
 		return err
 	}

reader/opml/handler.go

@@ -21,7 +21,7 @@ type Handler struct {
 
 // Export exports user feeds to OPML.
 func (h *Handler) Export(userID int64) (string, error) {
-	feeds, err := h.store.GetFeeds(userID)
+	feeds, err := h.store.Feeds(userID)
 	if err != nil {
 		log.Println(err)
 		return "", errors.New("unable to fetch feeds")
@@ -52,13 +52,13 @@ func (h *Handler) Import(userID int64, data io.Reader) (err error) {
 			var category *model.Category
 
 			if subscription.CategoryName == "" {
-				category, err = h.store.GetFirstCategory(userID)
+				category, err = h.store.FirstCategory(userID)
 				if err != nil {
 					log.Println(err)
 					return errors.New("unable to find first category")
 				}
 			} else {
-				category, err = h.store.GetCategoryByTitle(userID, subscription.CategoryName)
+				category, err = h.store.CategoryByTitle(userID, subscription.CategoryName)
 				if err != nil {
 					log.Println(err)
 					return errors.New("unable to search category by title")

reader/processor/processor.go

@@ -9,6 +9,7 @@ import (
 	"github.com/miniflux/miniflux2/reader/sanitizer"
 )
 
+// ItemContentProcessor executes a set of functions to sanitize and alter item contents.
 func ItemContentProcessor(url, content string) string {
 	content = sanitizer.Sanitize(url, content)
 	return rewrite.Rewriter(url, content)

reader/rewrite/rewriter.go

@@ -38,6 +38,7 @@ var rewriteRules = []func(string, string) string{
 	},
 }
 
+// Rewriter modify item contents with a set of rewriting rules.
 func Rewriter(url, content string) string {
 	for _, rewriteRule := range rewriteRules {
 		content = rewriteRule(url, content)