fixed multiple slashes in path

sitemap.go

@@ -4,6 +4,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"math"
+	"path"
 )
 
 type ChangeFrequency string
@@ -51,7 +52,7 @@ type SiteMap struct {
 
 func (m *SiteMap) AddURL(url string, lastMod *string, freq *ChangeFrequency, prio *float64) {
 	m.urls = append(m.urls, &urlXML{
-		Loc:        fmt.Sprintf("https://%s/%s", m.BaseURL, url),
+		Loc:        fmt.Sprintf("https://%s", path.Join(m.BaseURL, url)),
 		LastMod:    lastMod,
 		ChangeFreq: freq,
 		Priority:   prio,
@@ -69,7 +70,7 @@ func (m *SiteMap) SiteMapIndex() ([]byte, error) {
 
 	for i := 0; i < nSiteMaps; i++ {
 		index.SiteMaps = append(index.SiteMaps, &sitemapXML{
-			Loc: fmt.Sprintf("https://%s/sitemap%d.xml", m.BaseURL, i),
+			Loc: fmt.Sprintf("https://%s/sitemap/%d", m.BaseURL, i),
 		})
 	}
 
@@ -82,6 +83,10 @@ func (m *SiteMap) SiteMapIndex() ([]byte, error) {
 }
 
 func (m *SiteMap) SiteMap(id int) ([]byte, error) {
+	if 50000*(id) >= len(m.urls) {
+		return nil, nil
+	}
+
 	siteMap := &urlSetXML{}
 
 	var urls []*urlXML