1 files changed, 79 insertions, 0 deletions
diff --git a/client.cpp b/client.cpp
new file mode 100644
index 0000000..f99dc5d
--- /dev/null
+++ b/client.cpp
@@ -0,0 +1,79 @@
+#define MAX_ARGS 16
+#define pos(x, y) (x) + (y) * window_w
+
+struct ArgList {
+	int len, cap;
+	int *args;
+
+	ArgList(int cap) : len(0), cap(cap) {
+		args = new int[cap];
+		for (int i = 0; i < cap; args[i++] = 0);
+	}
+	~ArgList() { delete[] args; }
+
+	int pop() {
+		return args[--len];
+	}
+
+	void push(int value) {
+		args[len++] = value;
+	}
+
+};
+
+struct Client {
+	int sockfd;
+	Point cursor;
+	Point window_start;
+	ArgList args;
+
+	Client(const Buffer &b) :
+		cursor(b.storage, 0),
+		window_start(cursor),
+		args(MAX_ARGS)
+	{}
+
+	void show() {
+		int window_h = args.pop();
+		int window_w = args.pop();
+		char *view = new char[window_w * window_h];
+
+		Point window_end(window_start);
+		for (int i = 0; i < window_h; i++) {
+			for (int j = 0; j < window_w; j++) {
+				if (window_end == cursor) {
+					view[pos(j, i)] = '$';
+				} else {
+					view[pos(j, i)] = window_end.element();
+				}
+				if (window_end.element() == '\n') {
+					for (int k = j + 1; k < window_w; k++) {
+						view[pos(k, i)] = 0;
+					}
+					j = window_w;
+				} else if (window_end.element() == '\t') {
+					for (int k = j + 1; k < j + 8; k++) {
+						view[pos(k, i)] = 0;
+					}
+					j = j + 7;
+				}
+				window_end++;
+			}
+		}
+
+		write(sockfd, view, window_w * window_h);
+		delete[] view;
+	}
+
+	void move() {
+		int target = args.pop();
+		while (target > 0) {
+			cursor++;
+			target--;
+		}
+		while (target < 0) {
+			cursor--;
+			target++;
+		}
+	}
+};