Added a Message class with MessageType MSG_TYPE_MSG to transfer text strings.

3 files changed, 64 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 5761abc..499a618 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 *.o
+*.swp
diff --git a/messages.cpp b/messages.cpp
index 7bff612..bf50d8c 100644
--- a/messages.cpp
+++ b/messages.cpp
@@ -127,3 +127,50 @@ void Chunk::get_coords(int64_t& x, int64_t& y) {
 	is.read((char*)&y, sizeof(y));
 	got_coords = true;
 }
+
+/* Message */
+
+Message::Message() {
+	type = MSG_TYPE_MSG;
+
+	str_len = 0;
+	got_len = false;
+}
+
+Message::Message(std::string msg) {
+	type = MSG_TYPE_MSG;
+
+	str_len = msg.size();
+
+	std::ostream os(&b);
+	os.write((const char*)&str_len, sizeof(str_len));
+	os.write(msg.c_str(), str_len);
+
+	got_len = true;
+}
+
+std::size_t Message::payload_size() {
+	return (got_len ? str_len : sizeof(uint16_t));
+}
+
+uint16_t Message::get_len() {
+	std::istream is(&b);
+	is.read((char*)&str_len, sizeof(str_len));
+
+	got_len = true;
+
+	return str_len;
+}
+
+std::string Message::get_str() {
+	std::string s;
+
+	char *buf = new char[str_len];
+	std::istream is(&b);
+	is.read(buf, str_len);
+
+	s.assign(buf, str_len);
+	delete[] buf;
+
+	return s;
+}
diff --git a/messages.h b/messages.h
index 021c175..a476621 100644
--- a/messages.h
+++ b/messages.h
@@ -9,7 +9,8 @@ enum MessageType {
 	MSG_TYPE_NONE = 0,
 	MSG_TYPE_HELLO,
 	MSG_TYPE_POS,
-	MSG_TYPE_CHUNK
+	MSG_TYPE_CHUNK,
+	MSG_TYPE_MSG
 };
 
 class MessageBase {
@@ -60,6 +61,20 @@ class Chunk : public MessageBase {
 		void get_coords(int64_t& x, int64_t& y);
 };
 
+class Message : public MessageBase {
+	protected:
+		uint16_t str_len;
+		bool got_len;
+
+	public:
+		Message();
+		Message(std::string msg);
+
+		virtual std::size_t payload_size();
+		uint16_t get_len();
+		std::string get_str();
+};
+
 }
 
 #endif