add TCP based CLI

[blank.git] / src / shared / CommandBuffer.hpp

diff --git a/src/shared/CommandBuffer.hpp b/src/shared/CommandBuffer.hpp
new file mode 100644 (file)
index 0000000..316fe6b
--- /dev/null
+++ b/src/shared/CommandBuffer.hpp
@@ -0,0 +1,46 @@
+#ifndef BLANK_SHARED_COMMANDBUFFER_HPP_
+#define BLANK_SHARED_COMMANDBUFFER_HPP_
+
+#include "CLIContext.hpp"
+#include "../net/tcp.hpp"
+
+#include <string>
+
+
+namespace blank {
+
+/// Turns a tcp stream into commands and writes their
+/// output back to the stream.
+/// Instances delete themselves when OnRemove(tcp::Socket &)
+/// is called, so make sure it was either allocated with new
+/// and isn't dereferenced after removal or OnRemove is never
+/// called.
+class CommandBuffer
+: public CLIContext
+, public tcp::IOHandler {
+
+public:
+       explicit CommandBuffer(CLI &);
+       ~CommandBuffer() override;
+
+       // CLIContext implementation
+       void Error(const std::string &) override;
+       void Message(const std::string &) override;
+       void Broadcast(const std::string &) override;
+
+       /// IOHandler implementation
+       void OnSend(tcp::Socket &) override;
+       void OnRecv(tcp::Socket &) override;
+       void OnRemove(tcp::Socket &) noexcept override;
+
+private:
+       CLI &cli;
+       std::string write_buffer;
+       std::string read_buffer;
+       std::size_t head;
+
+};
+
+}
+
+#endif