From b836e0a4630c9cf8c098b18bca83a3323e181b7f Mon Sep 17 00:00:00 2001
From: Patrick <patrick.schoenberger@posteo.de>
Date: Wed, 2 Aug 2023 21:11:57 +0200
Subject: [PATCH] added termsize to main2

---
 main2.c | 38 ++++++++++++++------------------------
 1 file changed, 14 insertions(+), 24 deletions(-)

diff --git a/main2.c b/main2.c
index 51c5ad4..5ea32ef 100644
--- a/main2.c
+++ b/main2.c
@@ -17,8 +17,10 @@
 // getch()
 
 #ifdef _WIN32
+#include <windows.h>
 #include <conio.h>
 #else
+#include <sys/ioctl.h>
 #include <termios.h>
 #include <unistd.h>
 #include <stdio.h>
@@ -30,21 +32,7 @@ int getch(void)
     int ch;
     tcgetattr( STDIN_FILENO, &oldattr );
     newattr = oldattr;
-    newattr.c_lflag &= ~( ICANON | ECHO );
-    tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
-    ch = getchar();
-    tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
-    return ch;
-}
-
-/* reads from keypress, echoes */
-int getche(void)
-{
-    struct termios oldattr, newattr;
-    int ch;
-    tcgetattr( STDIN_FILENO, &oldattr );
-    newattr = oldattr;
-    newattr.c_lflag &= ~( ICANON );
+    newattr.c_lflag &= ~( ICANON | ECHO ); // no ECHO for echo(?)
     tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
     ch = getchar();
     tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
@@ -91,15 +79,17 @@ void vt100CursorPos(int v, int h) { vt100Escape("[%d;%dH", v, h); }
 void vt100SaveCursor() { vt100Escape("7"); }
 void vt100RestoreCursor() { vt100Escape("8"); }
 void vt100GetScreenSize(int * v, int * h) {
-    *v = *h = 0;
-    vt100CursorPos(1000000, 1000000);
-    printf("\033[6n");
-    getch(); getch();
-    int c;
-    while ((c = getch()) != ';')
-        *v = (10*(*v)+(c-'0'));
-    while ((c = getch()) != 'R')
-        *h = (10*(*h)+(c-'0'));
+#ifdef _WIN32
+    CONSOLE_SCREEN_BUFFER_INFO csbi;
+    GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &csbi);
+    *h = csbi.srWindow.Right - csbi.srWindow.Left + 1;
+    *v = csbi.srWindow.Bottom - csbi.srWindow.Top + 1;
+#else
+    struct winsize w;
+    ioctl(STDOUT_FILENO, TIOCGWINSZ, &w);
+    *h = w.ws_row;
+    *v = w.ws_col;
+#endif
 }
 
 
-- 
2.50.1