use golang.org/x/term for terminal detection

go.mod

@@ -5,6 +5,7 @@ go 1.23
 require (
 	github.com/stretchr/testify v1.10.0
 	golang.org/x/sys v0.13.0
+	golang.org/x/term v0.2.0
 )
 
 require (

go.sum

@@ -6,6 +6,8 @@ github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOf
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
 golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.2.0 h1:z85xZCsEl7bi/KwbNADeBYoOP0++7W1ipu+aGnpwzRM=
+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

terminal_check.go

@@ -0,0 +1,25 @@
+//go:build !appengine
+
+package logrus
+
+import (
+	"io"
+	"os"
+
+	"golang.org/x/term"
+)
+
+func checkIfTerminal(w io.Writer) bool {
+	if f, ok := w.(*os.File); ok {
+		fd := f.Fd()
+		maxInt := uintptr(^uint(0) >> 1)
+		if fd > maxInt || !term.IsTerminal(int(fd)) {
+			return false
+		}
+
+		// On Windows consoles, ANSI escape sequences are not processed
+		// unless ENABLE_VIRTUAL_TERMINAL_PROCESSING is set.
+		return enableVirtualTerminalProcessing(fd)
+	}
+	return false
+}

terminal_vt_other.go

@@ -0,0 +1,7 @@
+//go:build !windows
+
+package logrus
+
+func enableVirtualTerminalProcessing(fd uintptr) bool {
+	return true
+}

terminal_vt_windows.go

@@ -0,0 +1,21 @@
+//go:build windows
+
+package logrus
+
+import "golang.org/x/sys/windows"
+
+func enableVirtualTerminalProcessing(fd uintptr) bool {
+	h := windows.Handle(fd)
+
+	var mode uint32
+	if err := windows.GetConsoleMode(h, &mode); err != nil {
+		return false
+	}
+	if mode&windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING != 0 {
+		return true
+	}
+	if err := windows.SetConsoleMode(h, mode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING); err != nil {
+		return false
+	}
+	return true
+}