LibLine: Avoid excessive write() syscalls when refreshing the display

Previously, we were generating the display update one character at a
time, and writing them one at a time to stderr, which is not buffered,
doing so caused one syscall per character printed which is s l o w (TM)
This commit makes LibLine write the update contents into a buffer, and
flush it after all the update is generated :^)

1 files changed, 7 insertions, 7 deletions

diff --git a/Userland/Libraries/LibLine/VT.h b/Userland/Libraries/LibLine/VT.h
index 681edf0353..da5332dc29 100644
--- a/Userland/Libraries/LibLine/VT.h
+++ b/Userland/Libraries/LibLine/VT.h
@@ -12,13 +12,13 @@
 namespace Line {
 namespace VT {
 
-void save_cursor();
-void restore_cursor();
-void clear_to_end_of_line();
-void clear_lines(size_t count_above, size_t count_below = 0);
-void move_relative(int x, int y);
-void move_absolute(u32 x, u32 y);
-void apply_style(const Style&, bool is_starting = true);
+void save_cursor(OutputStream&);
+void restore_cursor(OutputStream&);
+void clear_to_end_of_line(OutputStream&);
+void clear_lines(size_t count_above, size_t count_below, OutputStream&);
+void move_relative(int x, int y, OutputStream&);
+void move_absolute(u32 x, u32 y, OutputStream&);
+void apply_style(const Style&, OutputStream&, bool is_starting = true);
 
 }
 }