Fix some defaults

cmd/arxiv.go

@@ -116,7 +116,7 @@ Thank you to arXiv for use of its open access interoperability.`,
 				if err != nil {
 					log.Fatal(err)
 				}
-				pattern := `/abs/(\d+\.\d+)(?:v\d+)?$`
+				pattern := `/abs/([0-9a-z]+(\/|\.)\d+)(?:v\d+)?$`
 				re := regexp.MustCompile(pattern)
 
 				for true {
@@ -126,6 +126,9 @@ Thank you to arXiv for use of its open access interoperability.`,
 						time.Sleep(3 * time.Second)
 
 						matches := re.FindStringSubmatch(e.ID)
+						if len(matches) <= 1 {
+							log.Fatal(e.ID)
+						}
 						oai := arxiv.GetOaiRecord(matches[1])
 						if e.JournalRef != "" {
 							e.JournalRef = fmt.Sprintf(`{"title": "%s"}`, e.JournalRef)

pkg/arxiv/oai.go

@@ -35,7 +35,9 @@ type OaiAuthor struct {
 }
 
 func GetOaiRecord(id string) map[string]string {
-	values := map[string]string{}
+	values := map[string]string{
+		"field_rights": "https://arxiv.org/licenses/nonexclusive-distrib/1.0/license.html",
+	}
 	log.Println("Fetching", id)
 	url := fmt.Sprintf("https://export.arxiv.org/oai2?verb=GetRecord&identifier=oai:arXiv.org:%s&metadataPrefix=arXiv", id)
 	resp, err := http.Get(url)