1 files changed, 277 insertions, 0 deletions
diff --git a/bindings/ruby/rbzmq.cpp b/bindings/ruby/rbzmq.cpp
new file mode 100644
index 0000000..bf0d9bc
--- /dev/null
+++ b/bindings/ruby/rbzmq.cpp
@@ -0,0 +1,277 @@
+/*
+    Copyright (c) 2007-2009 FastMQ Inc.
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the Lesser GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    Lesser GNU General Public License for more details.
+
+    You should have received a copy of the Lesser GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <ruby.h>
+
+#include "../c/zmq.h"
+
+static void context_free (void *ctx)
+{
+    if (ctx) {
+       int rc = zmq_term (ctx);
+       assert (rc == 0);
+    }
+}
+
+static VALUE context_alloc (VALUE class_)
+{
+    return rb_data_object_alloc (class_, NULL, 0, context_free);
+}
+
+static VALUE context_initialize (VALUE self_, VALUE app_threads_,
+    VALUE io_threads_)
+{
+    assert (!DATA_PTR (self_));
+    void *ctx = zmq_init (NUM2INT (app_threads_), NUM2INT (io_threads_));
+    if (!ctx) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    DATA_PTR (self_) = (void*) ctx;
+    return self_;
+}
+
+static void socket_free (void *s)
+{
+    if (s) {
+       int rc = zmq_close (s);
+       assert (rc == 0);
+    }
+}
+
+static VALUE socket_alloc (VALUE class_)
+{
+    return rb_data_object_alloc (class_, NULL, 0, socket_free);
+}
+
+static VALUE socket_initialize (VALUE self_, VALUE context_, VALUE type_)
+{
+    assert (!DATA_PTR (self_));
+
+    if (strcmp (rb_obj_classname (context_), "Context") != 0) {
+        rb_raise (rb_eArgError, "expected Context object");
+        return Qnil;
+    }
+
+    void *s = zmq_socket (DATA_PTR (context_), NUM2INT (type_));
+    if (!s) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    DATA_PTR (self_) = (void*) s;
+    return self_;
+}
+
+
+static VALUE socket_setsockopt (VALUE self_, VALUE option_,
+    VALUE optval_)
+{
+
+    int rc = 0;
+
+    switch (NUM2INT (option_)) {
+    case ZMQ_HWM:
+    case ZMQ_LWM:
+    case ZMQ_SWAP:
+    case ZMQ_AFFINITY:
+    case ZMQ_RATE:
+    case ZMQ_RECOVERY_IVL:
+    case ZMQ_MCAST_LOOP:
+        {
+            long optval = FIX2LONG (optval_);
+
+            //  Forward the code to native 0MQ library.
+            rc = zmq_setsockopt (DATA_PTR (self_), NUM2INT (option_), 
+                (void *) &optval, 4);
+        }
+
+        break;
+    case ZMQ_IDENTITY:
+    case ZMQ_SUBSCRIBE:
+    case ZMQ_UNSUBSCRIBE:
+
+        //  Forward the code to native 0MQ library.
+        rc = zmq_setsockopt (DATA_PTR (self_), NUM2INT (option_), 
+	    (void *) StringValueCStr (optval_), RSTRING_LEN (optval_));	
+        break;
+
+    default:
+        rc = -1;
+        errno = EINVAL;
+    }
+
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return self_;
+}
+
+
+static VALUE socket_bind (VALUE self_, VALUE addr_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_bind (DATA_PTR (self_), rb_string_value_cstr (&addr_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_connect (VALUE self_, VALUE addr_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_connect (DATA_PTR (self_), rb_string_value_cstr (&addr_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_send (VALUE self_, VALUE msg_, VALUE flags_)
+{
+    assert (DATA_PTR (self_));
+
+    Check_Type (msg_, T_STRING);
+
+    zmq_msg_t msg;
+    int rc = zmq_msg_init_size (&msg, RSTRING_LEN (msg_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+    memcpy (zmq_msg_data (&msg), RSTRING_PTR (msg_), RSTRING_LEN (msg_));
+ 
+    rc = zmq_send (DATA_PTR (self_), &msg, NUM2INT (flags_));
+    if (rc != 0 && errno == EAGAIN) {
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qfalse;
+    }
+
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    rc = zmq_msg_close (&msg);
+    assert (rc == 0);
+    return Qtrue;
+}
+
+static VALUE socket_flush (VALUE self_)
+{
+    assert (DATA_PTR (self_));
+
+    int rc = zmq_flush (DATA_PTR (self_));
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        return Qnil;
+    }
+
+    return Qnil;
+}
+
+static VALUE socket_recv (VALUE self_, VALUE flags_)
+{
+    assert (DATA_PTR (self_));
+
+    zmq_msg_t msg;
+    int rc = zmq_msg_init (&msg);
+    assert (rc == 0);
+
+    rc = zmq_recv (DATA_PTR (self_), &msg, NUM2INT (flags_));
+    if (rc != 0 && errno == EAGAIN) {
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    if (rc != 0) {
+        rb_raise (rb_eRuntimeError, strerror (errno));
+        rc = zmq_msg_close (&msg);
+        assert (rc == 0);
+        return Qnil;
+    }
+
+    VALUE message = rb_str_new ((char*) zmq_msg_data (&msg),
+        zmq_msg_size (&msg));
+    rc = zmq_msg_close (&msg);
+    assert (rc == 0);
+    return message;
+}
+
+extern "C" void Init_librbzmq ()
+{	
+    VALUE context_type = rb_define_class ("Context", rb_cObject);
+    rb_define_alloc_func (context_type, context_alloc);
+    rb_define_method (context_type, "initialize",
+        (VALUE(*)(...)) context_initialize, 2);
+
+    VALUE socket_type = rb_define_class ("Socket", rb_cObject);
+    rb_define_alloc_func (socket_type, socket_alloc);
+    rb_define_method (socket_type, "initialize",
+        (VALUE(*)(...)) socket_initialize, 2);
+    rb_define_method (socket_type, "setsockopt",
+        (VALUE(*)(...)) socket_setsockopt, 2);
+    rb_define_method (socket_type, "bind",
+        (VALUE(*)(...)) socket_bind, 1);
+    rb_define_method (socket_type, "connect",
+        (VALUE(*)(...)) socket_connect, 1);
+    rb_define_method (socket_type, "send",
+        (VALUE(*)(...)) socket_send, 2);
+    rb_define_method (socket_type, "flush",
+        (VALUE(*)(...)) socket_flush, 0);
+    rb_define_method (socket_type, "recv",
+        (VALUE(*)(...)) socket_recv, 1);
+
+    rb_define_global_const ("HWM", INT2NUM (ZMQ_HWM));
+    rb_define_global_const ("LWM", INT2NUM (ZMQ_LWM));
+    rb_define_global_const ("SWAP", INT2NUM (ZMQ_SWAP));
+    rb_define_global_const ("AFFINITY", INT2NUM (ZMQ_AFFINITY));
+    rb_define_global_const ("IDENTITY", INT2NUM (ZMQ_IDENTITY));
+    rb_define_global_const ("SUBSCRIBE", INT2NUM (ZMQ_SUBSCRIBE));
+    rb_define_global_const ("UNSUBSCRIBE", INT2NUM (ZMQ_UNSUBSCRIBE));
+    rb_define_global_const ("RATE", INT2NUM (ZMQ_RATE));
+    rb_define_global_const ("RECOVERY_IVL", INT2NUM (ZMQ_RECOVERY_IVL));
+    rb_define_global_const ("MCAST_LOOP", INT2NUM (ZMQ_MCAST_LOOP));
+
+    rb_define_global_const ("NOBLOCK", INT2NUM (ZMQ_NOBLOCK));
+    rb_define_global_const ("NOFLUSH", INT2NUM (ZMQ_NOFLUSH));
+
+    rb_define_global_const ("P2P", INT2NUM (ZMQ_P2P));
+    rb_define_global_const ("SUB", INT2NUM (ZMQ_SUB));
+    rb_define_global_const ("PUB", INT2NUM (ZMQ_PUB));
+    rb_define_global_const ("REQ", INT2NUM (ZMQ_REQ));
+    rb_define_global_const ("REP", INT2NUM (ZMQ_REP));
+}