mycorrhiza/flag.go

package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"path/filepath"

	"github.com/bouncepaw/mycorrhiza/assets"
	"github.com/bouncepaw/mycorrhiza/user"
	"github.com/bouncepaw/mycorrhiza/util"
)

var printExampleConfig bool

func init() {
	flag.StringVar(&util.ConfigFilePath, "config-path", "", "Path to a configuration file. Leave empty if you don't want to use it.")
	flag.BoolVar(&printExampleConfig, "print-example-config", false, "If true, print an example configuration file contents and exit. You can save the output to a file and base your own configuration on it.")
	flag.Usage = func() {
		fmt.Fprintf(
			flag.CommandLine.Output(),
			assets.HelpMessage(),
			os.Args[0],
		)
		flag.PrintDefaults()
	}
}

// Do the things related to cli args and die maybe
func parseCliArgs() {
	flag.Parse()

	args := flag.Args()
	if printExampleConfig {
		fmt.Printf(assets.ExampleConfig())
		os.Exit(0)
	}

	if len(args) == 0 {
		log.Fatal("Error: pass a wiki directory")
	}

	// It is ok if the path is ""
	util.ReadConfigFile(util.ConfigFilePath)

	var err error
	WikiDir, err = filepath.Abs(args[0])
	util.WikiDir = WikiDir
	if err != nil {
		log.Fatal(err)
	}

	if util.URL == "" {
		util.URL = "http://0.0.0.0:" + util.ServerPort
	}

	util.HomePage = util.CanonicalName(util.HomePage)
	util.UserHypha = util.CanonicalName(util.UserHypha)
	util.HeaderLinksHypha = util.CanonicalName(util.HeaderLinksHypha)
	user.AuthUsed = util.UseFixedAuth || util.UseRegistration
	if user.AuthUsed && (util.FixedCredentialsPath != "" || util.RegistrationCredentialsPath != "") {
		user.ReadUsersFromFilesystem()
	}
}