--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/transport.c Thu May 28 01:17:36 2009 +0300
@@ -0,0 +1,160 @@
+#include "transport_internal.h"
+
+#include <assert.h>
+#include <stdlib.h>
+
+const struct error_list transport_errors = ERROR_LIST("transport",
+ ERROR_TYPE( ERR_TRANSPORT_EOF, "EOF" ),
+ ERROR_TYPE( ERR_TRANSPORT_READABLE, "transport not readable" ),
+ ERROR_TYPE( ERR_TRANSPORT_WRITEABLE, "transport not writeable" )
+);
+
+/**
+ * Our own object_type
+ */
+const struct object_type transport_type_type = {
+ .parent = NULL,
+};
+
+/*
+ * Internal API
+ */
+void transport_init (transport_t *transport, const struct transport_type *type, const struct transport_info *info)
+{
+ // init object
+ object_init(&transport->base_obj, &type->base_type);
+
+ // store
+ if (info)
+ transport->info = *info;
+}
+
+void* transport_check (transport_t *transport, const struct transport_type *type)
+{
+ // trip as a bug
+ assert(object_check(&transport->base_obj, &type->base_type));
+
+ // ok, cast via void*
+ return transport;
+}
+
+void transport_connected (transport_t *transport, const error_t *err, bool direct)
+{
+ const struct transport_type *type = object_type(&transport->base_obj, &transport_type_type);
+
+ if (direct || !type->methods._connected) {
+ // user callback
+ if (err) {
+ // connect failed
+ transport->info.cb_tbl->on_error(transport, err, transport->info.cb_arg);
+
+ } else {
+ // update state
+ transport->connected = true;
+
+ // connect succesfull
+ transport->info.cb_tbl->on_connect(transport, transport->info.cb_arg);
+ }
+
+ } else {
+ // wrapper method
+ type->methods._connected(transport, err);
+
+ }
+}
+
+void transport_invoke (transport_t *transport, short what)
+{
+ // on_ready
+ if (what & TRANSPORT_READ && transport->info.cb_tbl->on_read)
+ transport->info.cb_tbl->on_read(transport, transport->info.cb_arg);
+
+ // on_write
+ if (what & TRANSPORT_WRITE && transport->info.cb_tbl->on_write)
+ transport->info.cb_tbl->on_write(transport, transport->info.cb_arg);
+
+}
+
+void transport_error (transport_t *transport, const error_t *err)
+{
+ // update state
+ transport->connected = false;
+
+ // invoke callback
+ transport->info.cb_tbl->on_error(transport, err, transport->info.cb_arg);
+}
+
+/*
+ * Public API
+ */
+int transport_read (transport_t *transport, void *buf, size_t len, error_t *err)
+{
+ const struct transport_type *type = object_type(&transport->base_obj, &transport_type_type);
+
+ // not readable
+ if (!type->methods.read)
+ return SET_ERROR(err, &transport_errors, ERR_TRANSPORT_READABLE);
+
+ // proxy off to method handler
+ if (type->methods.read(transport, buf, &len, err))
+ return -error_code(err);
+
+ // return updated 'bytes-read' len
+ return len;
+}
+
+int transport_write (transport_t *transport, const void *buf, size_t len, error_t *err)
+{
+ const struct transport_type *type = object_type(&transport->base_obj, &transport_type_type);
+
+ // not writeable
+ if (!type->methods.write)
+ return SET_ERROR(err, &transport_errors, ERR_TRANSPORT_WRITEABLE);
+
+ // proxy off to method handler
+ if (type->methods.write(transport, buf, &len, err))
+ return -error_code(err);
+
+ // return updated 'bytes-written' len
+ return len;
+}
+
+err_t transport_events (transport_t *transport, short mask)
+{
+ const struct transport_type *type = object_type(&transport->base_obj, &transport_type_type);
+ error_t err;
+
+ // notify transport
+ if (type->methods.events) {
+ if (type->methods.events(transport, mask, &err))
+ goto error;
+ }
+
+ // update the event mask
+ transport->info.ev_mask = mask;
+
+ // ok
+ return SUCCESS;
+
+error:
+ return ERROR_CODE(&err);
+}
+
+void transport_set_callbacks (transport_t *transport, const struct transport_callbacks *cb_tbl, void *cb_arg)
+{
+ transport->info.cb_tbl = cb_tbl;
+ transport->info.cb_arg = cb_arg;
+}
+
+void transport_destroy (transport_t *transport)
+{
+ const struct transport_type *type = object_type(&transport->base_obj, &transport_type_type);
+
+ // destroy the transport-specific stuff
+ if (type->methods.deinit)
+ type->methods.deinit(transport);
+
+ // then the transport itself
+ free(transport);
+}
+