* src/playground.lisp: Add fun for reading from file instead of

network socket.  Add small pattern matching example (fare-matcher).

1 files changed, 35 insertions, 2 deletions

diff --git a/src/playground.lisp b/src/playground.lisp
index bc11db6..4936cd0 100644
--- a/src/playground.lisp
+++ b/src/playground.lisp
@@ -78,17 +78,50 @@
   (usocket:socket-close sock))
 
 ;;;;
-(defun play ()
-  (let ((reader (new-reader "victoria.tug" 50001))
+(defun read-stream-into-list (host port)
+  (let ((reader (new-reader host port))
 	(xmls-builder (cxml-xmls:make-xmls-builder)))
     (do ((e (next-xml-blurb reader "BGP_MESSAGE")
 	    (next-xml-blurb reader "BGP_MESSAGE")))
 	((null e))
       (print (cxml:parse e xmls-builder)))
     (close-reader)))
+
+;;
+(let ((s nil))
+  (defun file-reader (fn)
+    (when s
+      (close s))
+    (setf s (open fn :element-type '(unsigned-byte 8)))
+    (lambda (n)
+      (read-byte s nil)))
+  (defun close-file ()
+    (close s)))
+;;
+(defun read-file-into-list (fn)
+  (let ((reader (file-reader fn))
+	(xmls-builder (cxml-xmls:make-xmls-builder)))
+    (do ((e (next-xml-blurb reader "BGP_MESSAGE")
+	    (next-xml-blurb reader "BGP_MESSAGE")))
+	((null e))
+      (print (cxml:parse e xmls-builder)))
+    (close-file)))
 ;;
 (next-xml-blurb (new-reader "victoria.tug.nordu.net" 50001) "BGP_MESSAGE")
 
+;;;; Pattern matching using fare-matcher.
+(require :fare-matcher)
+(let ((expr '(foo bar)))
+  (letm
+      (list a b)			;pattern
+      expr
+    (list a b)))
+(let ((expr '(foo kaka bar)))
+  (match
+   expr
+   ((list a b) (list 'plain a b))
+   ((list a 'kaka b) (list 'cookie a b))))
+
 ;;;; db
 ;; SQL
 "select * from bgp_message where timestamp != 0 order by id desc limit 3;"