From 99ee1a95551cd869c56f5ee0a07047a35e8900d6 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Tue, 15 Apr 2025 10:36:12 -0400
Subject: bfstd: Add a tcgetwinsize() polyfill

---
 src/bfstd.c | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

(limited to 'src/bfstd.c')

diff --git a/src/bfstd.c b/src/bfstd.c
index 82663eb..64cc605 100644
--- a/src/bfstd.c
+++ b/src/bfstd.c
@@ -23,10 +23,12 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/ioctl.h>
 #include <sys/resource.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <termios.h>
 #include <unistd.h>
 #include <wchar.h>
 
@@ -187,16 +189,6 @@ char *xgetdelim(FILE *file, char delim) {
 	}
 }
 
-int open_cterm(int flags) {
-	char path[L_ctermid];
-	if (ctermid(path) == NULL || strlen(path) == 0) {
-		errno = ENOTTY;
-		return -1;
-	}
-
-	return open(path, flags);
-}
-
 const char *xgetprogname(void) {
 	const char *cmd = NULL;
 #if BFS_HAS_GETPROGNAME
@@ -558,6 +550,24 @@ pid_t xwaitpid(pid_t pid, int *status, int flags) {
 	return ret;
 }
 
+int open_cterm(int flags) {
+	char path[L_ctermid];
+	if (ctermid(path) == NULL || strlen(path) == 0) {
+		errno = ENOTTY;
+		return -1;
+	}
+
+	return open(path, flags);
+}
+
+int xtcgetwinsize(int fd, struct winsize *ws) {
+#if BFS_HAS_TCGETWINSIZE
+	return tcgetwinsize(fd, ws);
+#else
+	return ioctl(fd, TIOCGWINSZ, ws);
+#endif
+}
+
 int dup_cloexec(int fd) {
 #ifdef F_DUPFD_CLOEXEC
 	return fcntl(fd, F_DUPFD_CLOEXEC, 0);
-- 
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