工具基本实现write功能

cmd/saastool/term.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"os"
+	"syscall"
+	"unsafe"
+)
+
+// https://man7.org/linux/man-pages/man2/TIOCSWINSZ.2const.html
+
+// winSize console窗口大小
+type winSize struct {
+	wsRow     uint16
+	wsCols    uint16
+	wsXPixels uint16
+	wxYPixels uint16
+}
+
+// getConsoleSize 获取控制台窗口大小
+func getConsoleSize() (cols, rows int) {
+	var sz winSize
+	_, _, _ = syscall.Syscall(syscall.SYS_IOCTL,
+		os.Stdout.Fd(), uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&sz)))
+	return int(sz.wsCols), int(sz.wsRow)
+}