1 files changed, 34 insertions, 0 deletions
diff --git a/module/calp/repl.scm b/module/calp/repl.scm
new file mode 100644
index 00000000..f43b8fce
--- /dev/null
+++ b/module/calp/repl.scm
@@ -0,0 +1,34 @@
+;;; Commentary:
+;;; Starts a repl server on some form of address.
+;;; Code:
+
+(define-module (calp repl)
+  :use-module (system repl server)
+  :use-module (ice-9 regex)
+  :use-module ((util hooks) :select (shutdown-hook))
+  :use-module (util exceptions)
+  )
+
+(define-public (repl-start address)
+  (define lst (string->list address))
+  (format (current-error-port)
+          "Starting REPL server at ~a~%" address)
+  (spawn-server
+   (case (cond [(memv (car lst) '(#\. #\/)) 'UNIX]
+               [(string-match "(\\d{1,3}\\.){3}\\d{1,3}(:\\d+)?" address) 'IPv4]
+               ;; IPv6 is as of Gulie 2.2 not supported by make-tcp-server-socket.
+               ;; This might be the same problem as I encountered in my html server.
+               [else 'UNIX])
+     [(UNIX)
+      (add-hook! shutdown-hook (lambda () (catch 'system-error (lambda () (delete-file address))
+                                       (lambda (err proc fmt . args)
+                                         (warning "Failed to unlink ~a" address args)
+                                         err))))
+      (make-unix-domain-server-socket path: address)]
+     [(IPv4) (apply (case-lambda
+                      [() (error "Empty address?")]
+                      [(address)      (make-tcp-server-socket host: address)]
+                      [(address port) (make-tcp-server-socket host: address port: port)])
+                    (string-split address #\:))]
+     ;; currently impossible
+     [(IPv6) (error "How did you get here?")])))