split button and parse packages

src/device/input/parse/plaintext.go

@@ -0,0 +1,48 @@
+package parse
+
+import (
+	"mayhem-party/src/device/input/button"
+	"mayhem-party/src/device/input/raw"
+	"os"
+)
+
+var (
+	FlagParsePlaintextRelease = os.Getenv("PARSE_PLAINTEXT_RELEASE")
+)
+
+type Plaintext struct {
+	src     raw.Raw
+	release byte
+}
+
+func NewPlaintext(src raw.Raw) Plaintext {
+	releaseChar := byte('!')
+	if FlagParsePlaintextRelease != "" {
+		releaseChar = byte(FlagParsePlaintextRelease[0])
+	}
+	return Plaintext{
+		src:     src,
+		release: releaseChar,
+	}
+}
+
+func (p Plaintext) Close() { p.src.Close() }
+
+func (p Plaintext) CloseWrap() raw.Raw { return p.src }
+
+func (p Plaintext) Read() []button.Button {
+	b := p.src.Read()
+	buttons := make([]button.Button, 0, len(b))
+	down := true
+	for i := range b {
+		if b[i] == p.release {
+			down = false
+		} else {
+			if b[i] != '\n' {
+				buttons = append(buttons, button.Button{Char: b[i], Down: down})
+			}
+			down = true
+		}
+	}
+	return buttons
+}