func()

in protoc-gen-go/generator/generator.go [448:501]

• 52 lines of code
• 18 McCabe index (conditional complexity)

func (g *Generator) CommandLineParameters(parameter string) {
	g.Param = make(map[string]string)
	for _, p := range strings.Split(parameter, ",") {
		if i := strings.Index(p, "="); i < 0 {
			g.Param[p] = ""
		} else {
			g.Param[p[0:i]] = p[i+1:]
		}
	}

	g.ImportMap = make(map[string]string)
	pluginList := "none" // Default list of plugin names to enable (empty means all).
	for k, v := range g.Param {
		switch k {
		case "import_prefix":
			g.ImportPrefix = v
		case "import_path":
			g.PackageImportPath = v
		case "paths":
			switch v {
			case "import":
				g.pathType = pathTypeImport
			case "source_relative":
				g.pathType = pathTypeSourceRelative
			default:
				g.Fail(fmt.Sprintf(`Unknown path type %q: want "import" or "source_relative".`, v))
			}
		case "plugins":
			pluginList = v
		case "annotate_code":
			if v == "true" {
				g.annotateCode = true
			}
		default:
			if len(k) > 0 && k[0] == 'M' {
				g.ImportMap[k[1:]] = v
			}
		}
	}
	if pluginList != "" {
		// Amend the set of plugins.
		enabled := make(map[string]bool)
		for _, name := range strings.Split(pluginList, "+") {
			enabled[name] = true
		}
		var nplugins []Plugin
		for _, p := range plugins {
			if enabled[p.Name()] {
				nplugins = append(nplugins, p)
			}
		}
		plugins = nplugins
	}
}