1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/github.com/moby/term/windows/ansi_writer.go b/vendor/github.com/moby/term/windows/ansi_writer.go
new file mode 100644
index 000000000..ccb5ef077
--- /dev/null
+++ b/vendor/github.com/moby/term/windows/ansi_writer.go
@@ -0,0 +1,56 @@
+// +build windows
+
+package windowsconsole
+
+import (
+	"io"
+	"os"
+
+	ansiterm "github.com/Azure/go-ansiterm"
+	"github.com/Azure/go-ansiterm/winterm"
+)
+
+// ansiWriter wraps a standard output file (e.g., os.Stdout) providing ANSI sequence translation.
+type ansiWriter struct {
+	file           *os.File
+	fd             uintptr
+	infoReset      *winterm.CONSOLE_SCREEN_BUFFER_INFO
+	command        []byte
+	escapeSequence []byte
+	inAnsiSequence bool
+	parser         *ansiterm.AnsiParser
+}
+
+// NewAnsiWriter returns an io.Writer that provides VT100 terminal emulation on top of a
+// Windows console output handle.
+func NewAnsiWriter(nFile int) io.Writer {
+	file, fd := winterm.GetStdFile(nFile)
+	info, err := winterm.GetConsoleScreenBufferInfo(fd)
+	if err != nil {
+		return nil
+	}
+
+	parser := ansiterm.CreateParser("Ground", winterm.CreateWinEventHandler(fd, file))
+
+	return &ansiWriter{
+		file:           file,
+		fd:             fd,
+		infoReset:      info,
+		command:        make([]byte, 0, ansiterm.ANSI_MAX_CMD_LENGTH),
+		escapeSequence: []byte(ansiterm.KEY_ESC_CSI),
+		parser:         parser,
+	}
+}
+
+func (aw *ansiWriter) Fd() uintptr {
+	return aw.fd
+}
+
+// Write writes len(p) bytes from p to the underlying data stream.
+func (aw *ansiWriter) Write(p []byte) (total int, err error) {
+	if len(p) == 0 {
+		return 0, nil
+	}
+
+	return aw.parser.Parse(p)
+}