// This work is subject to the CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
// license. Its contents can be found at:
// http://creativecommons.org/publicdomain/zero/1.0/

package main

import (
	"flag"
	"fmt"
	"github.com/jteeuwen/go-bindata"
	"os"
	"path/filepath"
)

func main() {
	cfg := parseArgs()
	err := bindata.Translate(cfg)

	if err != nil {
		fmt.Fprintf(os.Stderr, "bindata: %v\n", err)
		os.Exit(1)
	}
}

// parseArgs create s a new, filled configuration instance
// by reading and parsing command line options.
//
// This function exits the program with an error, if
// any of the command line options are incorrect.
func parseArgs() *bindata.Config {
	var version bool

	c := bindata.NewConfig()

	flag.Usage = func() {
		fmt.Printf("Usage: %s [options] <input dir> [<output file>]\n\n", os.Args[0])
		flag.PrintDefaults()
	}

	flag.BoolVar(&c.Debug, "debug", c.Debug, "Do not embed the assets, but provide the embedding API. Contents will still be loaded from disk.")
	flag.StringVar(&c.Tags, "tags", c.Tags, "Optional set of uild tags to include.")
	flag.StringVar(&c.Prefix, "prefix", c.Prefix, "Optional path prefix to strip off asset names.")
	flag.StringVar(&c.Package, "pkg", c.Package, "Package name to use in the generated code.")
	flag.BoolVar(&c.NoMemCopy, "nomemcopy", c.NoMemCopy, "Use a .rodata hack to get rid of unnecessary memcopies. Refer to the documentation to see what implications this carries.")
	flag.BoolVar(&c.NoCompress, "nocompress", c.NoCompress, "Assets will *not* be GZIP compressed when this flag is specified.")
	flag.BoolVar(&version, "version", false, "Displays version information.")
	flag.Parse()

	if version {
		fmt.Printf("%s\n", Version())
		os.Exit(0)
	}

	// Make sure we have in/output paths.
	if flag.NArg() == 0 {
		fmt.Fprintf(os.Stderr, "Missing input path.\n")
		os.Exit(1)
	}

	c.Input = filepath.Clean(flag.Arg(0))

	if flag.NArg() > 1 {
		c.Output = filepath.Clean(flag.Arg(1))
	}

	return c
}