Buffered socket IO wrappers

[disorder] / lib / socketio.h

diff --git a/lib/socketio.h b/lib/socketio.h
new file mode 100644 (file)
index 0000000..22b126b
--- /dev/null
+++ b/lib/socketio.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of DisOrder
+ * Copyright (C) 2013 Richard Kettlewell
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program 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
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/** @file lib/socketio.h
+ * @brief Buffered socket I/O
+ */
+#ifndef SOCKETIO_H
+# define SOCKETIO_H
+
+#define SOCKETIO_BUFFER 4096
+
+struct socketio {
+  SOCKET sd;
+  char *inputptr, *inputlimit;
+  size_t outputused;
+  int error;
+  char input[SOCKETIO_BUFFER];
+  char output[SOCKETIO_BUFFER];
+};
+
+void socketio_init(struct socketio *sio, SOCKET sd);
+int socketio_write(struct socketio *sio, const void *buffer, size_t n);
+int socketio_getc(struct socketio *sio);
+int socketio_flush(struct socketio *sio);
+void socketio_close(struct socketio *sio);
+
+static inline int socketio_error(struct socketio *sio) {
+  return sio->error > 0 ? sio->error : 0;
+}
+
+static inline int socketio_eof(struct socketio *sio) {
+  return sio->error == -1;
+}
+
+#endif