feat: add generators

generator/textwidget.go

@@ -0,0 +1,47 @@
+// +build ignore
+
+// This package takes care of generates for empty widgets. Each generator is named after the
+// type of widget it generate, so textwidget.go will generate the skeleton for a new TextWidget
+// using the textwidget.tpl template.
+// The TextWidget generator needs one environment variable, called WTF_WIDGET_NAME, which will
+// be the name of the TextWidget it generates. If the variable hasn't been set, the generator
+// will use "NewWiNewTextWidgetdget". On Linux and macOS the command can be run as
+// 'WTF_WIDGET_NAME=MyNewWidget go generate text'.
+package main
+
+import (
+	"os"
+	"strings"
+	"text/template"
+)
+
+var (
+	widgetName string
+)
+
+const (
+	defaultWidgetName = "NewTextWidget"
+)
+
+func main() {
+	widgetName, present := os.LookupEnv("WTF_WIDGET_NAME")
+	if !present {
+		widgetName = defaultWidgetName
+	}
+
+	data := struct {
+		Name string
+	}{
+		widgetName,
+	}
+
+	tpl, _ := template.New("textwidget.tpl").Funcs(template.FuncMap{
+		"Lower": strings.ToLower,
+		"Title": strings.Title,
+	}).ParseFiles("generator/textwidget.tpl")
+
+	out, _ := os.Create("generator/test.go")
+	defer out.Close()
+
+	tpl.Execute(out, data)
+}