echo back message stuff

[8sync.git] / demos / irc.scm

diff --git a/demos/irc.scm b/demos/irc.scm
index b6a992cdf19e5be2148b7a8e92ec4f22e3728f0b..37e4e0195ecbbe4a5b449aa19b39d8521a3e94f1 100755 (executable)
--- a/demos/irc.scm
+++ b/demos/irc.scm
@@ -24,6 +24,7 @@
              (srfi srfi-9)
              (ice-9 getopt-long)
              (ice-9 format)
+             (ice-9 receive)
              (ice-9 q)
              (ice-9 match))
 
@@ -128,21 +129,65 @@
      (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))
 
-(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"
-       (display "hey we got a PRIVMSG up in here!\n")
-       (display parsed-line)
-       (newline)
-       (display line)
-       (newline))
-      (_
-       (display line)
-       (newline)))))
+;; @@: 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 (echo-back-message 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 default-handle-privmsg echo-back-message)
+
+(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 '()))
@@ -169,7 +214,7 @@
                                       (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