oops

src/display.cc

@@ -0,0 +1,51 @@
+#include <fstream>
+
+#include <curses.h>
+
+#include "chat.h"
+
+void
+clear_rows(int s, int e)
+{
+	/* preserve cursor location */
+	int x_bef;
+	int y_bef;
+
+	getyx(stdscr, y_bef, x_bef);
+
+	for (int i = s; i < e; i++) {
+		move(i, 0);
+		clrtoeol();
+	}
+
+	move(y_bef, x_bef);
+}
+
+int
+file_disp(std::string p, int lnstart, int lncount)
+{
+	std::ifstream f(p);
+
+	if (!f)
+		return 1;
+
+	int i = 0;
+	int ln_no = 0;
+	std::string ln;
+
+	clear_rows(0, lncount + 1); /* clear chat window */
+
+	while (getline(f, ln) && i <= ln_no + lnstart + 1) {
+		if (i >= lnstart) {
+			move(ln_no, 0);
+			printw("%s", ln.c_str());
+			ln_no++;
+		}
+		i++;
+	}
+
+	move(CURSOR_DEFAULT_POSITION_Y, CURSOR_DEFAULT_POSITION_X);
+	refresh();
+	return 0;
+}
+