scraper.lisp

;;;; Copyright 2018 Reddit, Inc.
;;;; 
;;;; Permission is hereby granted, free of charge, to any person obtaining a copy of
;;;; this software and associated documentation files (the "Software"), to deal in
;;;; the Software without restriction, including without limitation the rights to
;;;; use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
;;;; of the Software, and to permit persons to whom the Software is furnished to do
;;;; so, subject to the following conditions:
;;;; 
;;;; The above copyright notice and this permission notice shall be included in all
;;;; copies or substantial portions of the Software.
;;;; 
;;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
;;;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
;;;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
;;;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
;;;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
;;;; SOFTWARE.

(in-package #:reddit)

(defparameter *delicious-url* "http://del.icio.us/popular/")
(defparameter *delicious-scanner* (create-scanner "(?s)<div class=\"post\">.+?<a href=\"([^\"]+)\">([^<]+)</a>.+?by <a href=\"[^\"]+\">(\\w+?)</a>.+?>and ([\\d]+)"))

(defun delicious-articles (&optional (ending ""))
  (let ((articles))
    (do-register-groups (url title poster pop)
        (*delicious-scanner* (website-string (concatenate 'string *delicious-url* ending)))
      (push (list title url pop poster) articles))
    (nreverse articles)))