finish from tty_size of iostreams in ios package

Author: abdfnx

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d
 	github.com/rivo/tview v0.0.0-20211202162923-2a6de950f73b
 	github.com/sirupsen/logrus v1.8.1
+	golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d
 )
 
 require (
@@ -33,7 +34,6 @@ require (
 	github.com/rivo/uniseg v0.2.0 // indirect
 	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
 	golang.org/x/sys v0.0.0-20210616094352-59db8d763f22 // indirect
-	golang.org/x/term v0.0.0-20210220032956-6a3ed077a48d // indirect
 	golang.org/x/text v0.3.6 // indirect
 	golang.org/x/time v0.0.0-20211116232009-f0f3c7e86c11 // indirect
 	google.golang.org/genproto v0.0.0-20201110150050-8816d57aaa9a // indirect

ios/tty_size.go

@@ -0,0 +1,23 @@
+//go:build !windows
+// +build !windows
+
+package ios
+
+import (
+	"os"
+
+	"golang.org/x/term"
+)
+
+// ttySize measures the size of the controlling terminal for the current process
+func ttySize() (int, int, error) {
+	f, err := os.Open("/dev/tty")
+
+	if err != nil {
+		return -1, -1, err
+	}
+
+	defer f.Close()
+
+	return term.GetSize(int(f.Fd()))
+}

ios/tty_size_windows.go

@@ -0,0 +1,19 @@
+package ios
+
+import (
+	"os"
+
+	"golang.org/x/term"
+)
+
+func ttySize() (int, int, error) {
+	f, err := os.Open("CONOUT$")
+
+	if err != nil {
+		return -1, -1, err
+	}
+
+	defer f.Close()
+
+	return term.GetSize(int(f.Fd()))
+}