X-Git-Url: https://jxself.org/git/?p=8sync.git;a=blobdiff_plain;f=demos%2Firc.scm;h=eabc31d82b3baa44eb73f62db4df9ab55ea14d02;hp=cbd3848378f8d8adb3748e0abe66b18e50921507;hb=d86e4ab5d19c62bd585239dd600aa2645b337c74;hpb=acafaeee5bba662ce9bb37744ee75e0c461c628d

diff --git a/demos/irc.scm b/demos/irc.scm
index cbd3848..eabc31d 100755
--- a/demos/irc.scm
+++ b/demos/irc.scm
@@ -21,8 +21,10 @@
 
 (use-modules (eightsync repl)
              (eightsync agenda)
+             (srfi srfi-9)
              (ice-9 getopt-long)
              (ice-9 format)
+             (ice-9 receive)
              (ice-9 q)
              (ice-9 match))
 
@@ -78,14 +80,112 @@
      (irc-format socket "JOIN ~a" channel))
    channels))
 
-(define (handle-line socket line my-username)
+(define (startswith-colon? str)
+  (and (> (string-length str) 0)
+       (eq? (string-ref str 0)
+            #\:)))
+
+(define-record-type <irc-line>
+  (make-irc-line prefix command params)
+  irc-line?
+  (prefix irc-line-prefix)
+  (command irc-line-command)
+  (params irc-line-params))
+
+
+(define (parse-line line)
+  (define (parse-params pre-params)
+    ;; This is stupid and imperative but I can't wrap my brain around
+    ;; the right way to do it in a functional way :\
+    (let ((param-list '())
+          (currently-building '()))
+      (for-each
+       (lambda (param-item)
+         (cond
+          ((startswith-colon? param-item)
+           (if (not (eq? currently-building '()))
+               (set! param-list
+                     (cons
+                      (reverse currently-building)
+                      param-list)))
+           (set! currently-building (list param-item)))
+          (else
+           (set! currently-building (cons param-item currently-building)))))
+       pre-params)
+      ;; We're still building something, so tack that on there
+      (if (not (eq? currently-building '()))
+          (set! param-list
+                (cons (reverse currently-building) param-list)))
+      ;; return the reverse of the param list
+      (reverse param-list)))
+
   (match (string-split line #\space)
-    (("PING" rest ...)
-     (irc-display "PONG" socket)
-     (display "PONG'ed back ;)\n"))
-    (_
-     (display line)
-     (newline))))
+    (((? startswith-colon? prefix)
+      command
+      pre-params ...)
+     (make-irc-line prefix command
+                    (parse-params pre-params)))
+    ((command pre-params ...)
+     (make-irc-line #f command
+                    (parse-params pre-params)))))
+
+(define (strip-colon-if-necessary string)
+  (if (and (> (string-length string) 0)
+           (string-ref string 0))
+      (substring/copy string 1)
+      string))
+
+;; @@: Not sure if this works in all cases, like what about in a non-privmsg one?
+(define (irc-line-username irc-line)
+  (let* ((prefix-name (strip-colon-if-necessary (irc-line-prefix irc-line)))
+         (exclaim-index (string-index prefix-name #\!)))
+    (if exclaim-index
+        (substring/copy prefix-name 0 exclaim-index)
+        prefix-name)))
+
+(define (condense-privmsg-line line)
+  "Condense message line and do multiple value return of
+  (channel message is-action)"
+  (define (strip-last-char string)
+    (substring/copy string 0 (- (string-length string) 1)))
+  (let* ((channel-name (caar line))
+         (rest-params (apply append (cdr line))))
+    (match rest-params
+      (((or "\x01ACTION" ":\x01ACTION") middle-words ... (= strip-last-char last-word))
+       (values channel-name
+               (string-join
+                (append middle-words (list last-word))
+                " ")
+               #t))
+      (((= strip-colon-if-necessary first-word) rest-message ...)
+       (values channel-name
+               (string-join (cons first-word rest-message) " ")
+               #f)))))
+
+(define (default-handle-privmsg my-name speaker
+                                channel-name message is-action)
+  (if is-action
+      (format #t "~a emoted ~s in channel ~a\n"
+              speaker message channel-name)
+      (format #t "~a said ~s in channel ~a\n"
+              speaker message channel-name)))
+
+(define* (make-handle-line #:key
+                           (handle-privmsg default-handle-privmsg))
+  (define (handle-line socket line my-username)
+    (let ((parsed-line (parse-line line)))
+      (match (irc-line-command parsed-line)
+        ("PING"
+         (irc-display "PONG" socket))
+        ("PRIVMSG"
+         (receive (channel-name message is-action)
+             (condense-privmsg-line (irc-line-params parsed-line))
+           (let ((username (irc-line-username parsed-line)))
+             (handle-privmsg my-username username channel-name message is-action))))
+        (_
+         (display line)
+         (newline)))))
+  handle-line)
 
 (define (make-simple-irc-handler handle-line username)
   (let ((buffer '()))
@@ -112,7 +212,7 @@
                                       (inet-port default-irc-port)
                                       (handler (make-simple-irc-handler
                                                 (lambda args
-                                                  (apply handle-line args))
+                                                  (apply (make-handle-line) args))
                                                 username))
                                       (channels '()))
   (dynamic-wind