config.go

/*
 * Copyright © 2017 Slizov Vadim <z7zmey@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package main

import (
	"flag"
	"log"
	"os"
	"strings"

	"github.com/yookoala/realpath"
)

type ArrayFlags []string

func (i *ArrayFlags) String() string {
	return strings.Join(*i, " ")
}

func (i *ArrayFlags) Set(value string) error {
	*i = append(*i, value)
	return nil
}

type CGConfig struct {
	path       ArrayFlags
	exclude    ArrayFlags
	debug      bool
	host       string
	port       int
	phpBinPath string
}

var Config = CGConfig{}

func ParseConfigFlags() {
	flag.Var(&Config.exclude, "exclude", "exclude path")
	flag.Var(&Config.exclude, "e", "exclude path (shorthand)")

	flag.BoolVar(&Config.debug, "debug", false, "print debug info")
	flag.BoolVar(&Config.debug, "d", false, "print debug info (shorthand)")

	flag.StringVar(&Config.host, "host", "127.0.0.1", "host")
	flag.StringVar(&Config.host, "h", "127.0.0.1", "host (shorthand)")

	flag.IntVar(&Config.port, "port", 8080, "port")
	flag.IntVar(&Config.port, "p", 8080, "port (shorthand)")

	flag.StringVar(&Config.phpBinPath, "php", "php", "path to php bin")

	flag.Parse()

	prepareConfigPath()
	convertToRealPath()
}

func prepareConfigPath() {
	Config.path = flag.Args()

	if len(Config.path) == 0 {
		path, err := os.Getwd()
		if err != nil {
			log.Fatal(err)
		}

		Config.path = ArrayFlags{path}
	}
}

func convertToRealPath() {
	for i, path := range Config.path {
		real, err := realpath.Realpath(path)
		checkErr(err)
		Config.path[i] = real
	}

	for i, path := range Config.exclude {
		real, err := realpath.Realpath(path)
		checkErr(err)
		Config.exclude[i] = real
	}
}