1 files changed, 43 insertions, 0 deletions
diff --git a/modules/log/console_windows.go b/modules/log/console_windows.go
new file mode 100644
index 0000000000..61469aacf8
--- /dev/null
+++ b/modules/log/console_windows.go
@@ -0,0 +1,43 @@
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package log
+
+import (
+	"os"
+
+	"github.com/mattn/go-isatty"
+	"golang.org/x/sys/windows"
+)
+
+func enableVTMode(console windows.Handle) bool {
+	mode := uint32(0)
+	err := windows.GetConsoleMode(console, &mode)
+	if err != nil {
+		return false
+	}
+
+	// EnableVirtualTerminalProcessing is the console mode to allow ANSI code
+	// interpretation on the console. See:
+	// https://docs.microsoft.com/en-us/windows/console/setconsolemode
+	// It only works on windows 10. Earlier terminals will fail with an err which we will
+	// handle to say don't color
+	mode = mode | windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING
+	err = windows.SetConsoleMode(console, mode)
+	return err == nil
+}
+
+func init() {
+	if isatty.IsTerminal(os.Stdout.Fd()) {
+		CanColorStdout = enableVTMode(windows.Stdout)
+	} else {
+		CanColorStdout = isatty.IsCygwinTerminal(os.Stderr.Fd())
+	}
+
+	if isatty.IsTerminal(os.Stderr.Fd()) {
+		CanColorStderr = enableVTMode(windows.Stderr)
+	} else {
+		CanColorStderr = isatty.IsCygwinTerminal(os.Stderr.Fd())
+	}
+}