main.go

package main

import (
	"errors"
	"fmt"
	"os"

	"github.com/jutkko/mindown/input"
	"github.com/jutkko/mindown/output"
	"github.com/jutkko/mindown/util"
	"github.com/urfave/cli"
)

func main() {
	app := cli.NewApp()
	app.Name = "mindown"
	app.Usage = "convert mind to files"
	app.Flags = []cli.Flag{
		cli.StringFlag{
			Name:  "input-format",
			Value: "opml",
			Usage: "the input file format",
		},
		cli.StringFlag{
			Name:  "input-file",
			Value: "input.txt",
			Usage: "input file name",
		},
		cli.StringFlag{
			Name:  "output-file",
			Value: "output.txt",
			Usage: "output file name",
		},
		cli.BoolFlag{
			Name:  "f",
			Usage: "provide this flag to overwrite the output file if it exists",
		},
	}

	app.Action = func(c *cli.Context) error {
		var (
			graph *util.Graph
			err   error
		)

		switch c.String("input-format") {
		case "yml":
			graph, err = input.ParseYaml(c.String("input-file"))
			if err != nil {
				return err
			}
		case "opml":
			graph, err = input.ParseOpml(c.String("input-file"))
			if err != nil {
				return err
			}
		default:
			return errors.New(fmt.Sprintf("input-format not supported: %s", c.String("input-format")))
		}

		err = output.WriteMarkdown(c.String("output-file"), c.Bool("f"), graph)
		if err != nil {
			return err
		}

		return nil
	}

	app.Run(os.Args)
}