Don't bail when a tag doesn't exist yet

Add the tag to the database if `first-result' returns nothing.

linkwave.scm

@@ -15,19 +15,25 @@
   (format #t "~a~%  ~a~%  ~a~%  ~a~%~%" (string-no-null name) (string-no-null description)
           (string-no-null url) (seconds->string seconds)))
 
+(define (add-tag name)
+  (execute db "INSERT INTO tag VALUES (?)" name)
+  (last-insert-rowid db))
+
 (define (add-bookmark url name description tags)
   (execute db "INSERT INTO bookmark VALUES (?, STRFTIME('%s'), ?, ?)"
            url name description)
   (let ((bookmark-id (last-insert-rowid db)))
     (for-each (lambda (tag)
-                (let ((tag-id (first-result db "SELECT rowid FROM tag WHERE name = ?" tag)))
-                  (unless tag-id
-                    (execute db "INSERT INTO tag VALUES (?)" tag)
-                    (set! tag-id (last-insert-rowid db)))
+                (let ((tag-id '()))
+                  (condition-case
+                   (set! tag-id (first-result db "SELECT rowid FROM tag WHERE name = ?" tag))
+                   (exn (exn sqlite3)
+                        (if (eq? (get-condition-property exn 'sqlite3 'status) 'done)
+                            (set! tag-id (add-tag tag))
+                            (signal exn))))
                   (execute db "INSERT INTO bookmark_tag VALUES (?, ?)"
                            bookmark-id tag-id)))
-              tags))
-  #t)
+              tags)))
 
 (define (url-string? str)
   (and (> (string-length str) 7)
@@ -42,7 +48,7 @@
       (cond
        ((url-string? (car cla))
         (with-transaction
-         db (lambda () (add-bookmark (car cla) (cadr cla) (caddr cla) (cdddr cla)))))
+         db (lambda () (add-bookmark (car cla) (cadr cla) (caddr cla) (cdddr cla)) #t)))
        (else
         (format #t "Unrecognized option: ~a~%" (car cla))))))