示例#1
0
文件: yang.go 项目: padmini-m/goyang
func main() {
	format := "tree"
	formats := make([]string, 0, len(formatters))
	for k := range formatters {
		formats = append(formats, k)
	}
	sort.Strings(formats)

	var traceP string
	var help bool
	getopt.CommandLine.ListVarLong(&yang.Path, "path", 0, "comma separated list of directories to add to PATH")
	getopt.CommandLine.StringVarLong(&format, "format", 0, "format to display: "+strings.Join(formats, ", "))
	getopt.CommandLine.StringVarLong(&traceP, "trace", 0, "file to write trace into")
	getopt.CommandLine.BoolVarLong(&help, "help", '?', "display help")

	getopt.Parse()

	if traceP != "" {
		fp, err := os.Create(traceP)
		if err != nil {
			fmt.Fprintln(os.Stderr, err)
			os.Exit(1)
		}
		trace.Start(fp)
		stop = func(c int) { trace.Stop(); os.Exit(c) }
		defer func() { trace.Stop() }()
	}

	if help {
		getopt.CommandLine.PrintUsage(os.Stderr)
		fmt.Fprintf(os.Stderr, "\nFormats:\n")
		for _, fn := range formats {
			f := formatters[fn]
			fmt.Fprintf(os.Stderr, "    %s - %s\n", f.name, f.help)
		}
		stop(0)
	}

	if _, ok := formatters[format]; !ok {
		fmt.Fprintf(os.Stderr, "%s: invalid format.  Choices are %s\n", format, strings.Join(formats, ", "))
		stop(1)

	}

	files := getopt.Args()

	if len(files) > 0 && !strings.HasSuffix(files[0], ".yang") {
		e, errs := yang.GetModule(files[0], files[1:]...)
		exitIfError(errs)
		Write(os.Stdout, e)
		return
	}

	// Okay, either there are no arguments and we read stdin, or there
	// is one or more file names listed.  Read them in and display them.

	ms := yang.NewModules()

	if len(files) == 0 {
		data, err := ioutil.ReadAll(os.Stdin)
		if err == nil {
			err = ms.Parse(string(data), "<STDIN>")
		}
		if err != nil {
			fmt.Fprintln(os.Stderr, err)
			stop(1)
		}
	}

	for _, name := range files {
		if err := ms.Read(name); err != nil {
			fmt.Fprintln(os.Stderr, err)
			continue
		}
	}

	// Process the read files, exiting if any errors were found.
	exitIfError(ms.Process())

	// Keep track of the top level modules we read in.
	// Those are the only modules we want to print below.
	mods := map[string]*yang.Module{}
	var names []string

	for _, m := range ms.Modules {
		if mods[m.Name] == nil {
			mods[m.Name] = m
			names = append(names, m.Name)
		}
	}
	sort.Strings(names)
	entries := make([]*yang.Entry, len(names))
	for x, n := range names {
		entries[x] = yang.ToEntry(mods[n])
	}

	formatters[format].f(os.Stdout, entries)
}
示例#2
0
文件: yang.go 项目: krousey/goyang
func main() {
	format := "tree"
	getopt.CommandLine.ListVarLong(&yang.Path, "path", 0, "comma separated list of directories to add to PATH")
	getopt.CommandLine.StringVarLong(&format, "format", 0, "format to display: tree, proto, types")

	getopt.Parse()
	files := getopt.Args()

	if len(files) > 0 && !strings.HasSuffix(files[0], ".yang") {
		e, errs := yang.GetModule(files[0], files[1:]...)
		exitIfError(errs)
		Write(os.Stdout, e)
		return
	}

	// Okay, either there are no arguments and we read stdin, or there
	// is one or more file names listed.  Read them in and display them.

	ms := yang.NewModules()

	if len(files) == 0 {
		data, err := ioutil.ReadAll(os.Stdin)
		if err == nil {
			err = ms.Parse(string(data), "<STDIN>")
		}
		if err != nil {
			fmt.Fprintln(os.Stderr, err)
			os.Exit(1)
		}
	}

	for _, name := range files {
		if err := ms.Read(name); err != nil {
			fmt.Fprintln(os.Stderr, err)
			continue
		}
	}

	// Keep track of the top level modules we read in.
	// Those are the only modules we want to print below.
	mods := map[string]*yang.Module{}
	var names []string

	for _, m := range ms.Modules {
		if mods[m.Name] == nil {
			mods[m.Name] = m
			names = append(names, m.Name)
		}
	}
	sort.Strings(names)

	// Print any errors found in the tree.  This will return false if
	// there were no errors.
	exitIfError(ms.Process())

	switch format {
	case "tree":
		for _, n := range names {
			Write(os.Stdout, yang.ToEntry(mods[n]))
		}
	case "proto":
		for _, n := range names {
			for _, e := range flatten(yang.ToEntry(mods[n])) {
				FormatNode(os.Stdout, e)
			}
		}
	case "types":
		types := Types{}
		for _, n := range names {
			types.AddEntry(yang.ToEntry(mods[n]))
		}

		for t := range types {
			YTPrint(os.Stdout, t)
		}
	default:
		fmt.Fprintf(os.Stderr, "unknown format: %s\n", format)
		os.Exit(1)
	}
}