func writeTemplate()

in generator/app.go [431:473]

• 30 lines of code
• 7 McCabe index (conditional complexity)

func writeTemplate(templatePath, outputPath string, fileFormat string, data interface{}) error {
	// set up template
	t, err := template.New(filepath.Base(templatePath)).
		Funcs(funcMap).
		ParseFiles(templatePath, filepath.Join(baseGeneratorDir, templateDir, headerTemplate))
	if err != nil {
		return err
	}

	// create if not exists
	if !pathExists(outputPath) {
		_, err = os.Create(outputPath)
		if err != nil {
			return err
		}
	}

	// open file and truncate
	f, err := os.OpenFile(outputPath, os.O_RDWR, 0644)
	if err != nil {
		return err
	}
	defer f.Close()

	// get any existing content
	content, err := getExistingContent(outputPath, fileFormat)
	if err != nil {
		return err
	}

	// ensure file is empty
	f.Truncate(0)

	// generated content
	err = t.Execute(f, data)
	if err != nil {
		return err
	}

	writeCustomContentBlock(f, content, fileFormat)

	return nil
}