Embed text files to binaries (#14)

.gitignore

@@ -1,3 +1,4 @@
 diceware-cli
 pkg/
-.DS_Store
+.DS_Store
+.vscode/

Makefile

@@ -12,3 +12,8 @@ build_linux:
 	@env GOOS=linux go build . \
 		&& zip ./pkg/diceware_linux_$(GOARCH).zip diceware-cli \
 		&& rm diceware-cli
+
+build_mac:
+	@go build . \
+		&& zip ./pkg/diceware_macOS_$(GOARCH).zip diceware-cli \
+		&& rm diceware-cli

cmd/generate.go

@@ -4,19 +4,21 @@ import (
 	"diceware-cli/diceware"
 	"fmt"
 
+	"github.com/gobuffalo/packr"
 	"github.com/spf13/cobra"
 )
 
 var (
 	generateConfig diceware.GenerateConfig
+	wordsBox            packr.Box
 
 	generateCmd = &cobra.Command{
 		Use:   "generate",
 		Short: "Generates a diceware password with custom configuration.",
 		Long: `Generates strong passwords based on easily memorable passwords that are 
 	also extremely resistant to attack.`,
 		Run: func(cmd *cobra.Command, args []string) {
-			err := diceware.Generate(generateConfig)
+			err := diceware.Generate(generateConfig, wordsBox)
 			if err != nil {
 				fmt.Printf("Ops...something went wrong: %s", err.Error())
 			}

cmd/root.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/gobuffalo/packr"
 	"github.com/spf13/cobra"
 )
 
@@ -17,7 +18,8 @@ var rootCmd = &cobra.Command{
 	},
 }
 
-func Execute() {
+func Execute(box packr.Box) {
+	wordsBox = box
 	generateCmd.Flags().StringVarP(&generateConfig.Lang, "lang", "l", "en", "password language\n available langs: en, pt")
 	generateCmd.Flags().StringVar(&generateConfig.Separator, "separator", " ", "character that separates the words,\n to remove reparator use --separator=none")
 	generateCmd.Flags().Int32VarP(&generateConfig.Size, "size", "s", 6, "the amount words the password will have")

diceware/diceware.go

@@ -1,36 +1,38 @@
 package diceware
 
 import (
-	"bufio"
 	"crypto/rand"
 	"fmt"
 	"math/big"
-	"os"
 	"os/exec"
 	"strconv"
 	"unicode"
 
+	"github.com/gobuffalo/packr"
 	"golang.org/x/text/runes"
 	"golang.org/x/text/transform"
 	"golang.org/x/text/unicode/norm"
 )
 
 type GenerateConfig struct {
-	Lang   string
-	Size   int32
-	Pbcopy bool
-	Hide   bool
+	Lang      string
+	Size      int32
+	Pbcopy    bool
+	Hide      bool
 	Separator string
 }
 
-func Generate(generateConfig GenerateConfig) error {
-	var words = ""
-	separator := generateConfig.Separator
+var wordsBox packr.Box
+
+func Generate(generateConfig GenerateConfig, box packr.Box) error {
+	wordsBox = box
 
+	separator := generateConfig.Separator
 	if separator == "none" {
 		separator = ""
 	}
 
+	var words string
 	for i := 1; i <= int(generateConfig.Size); i++ {
 		index := findDicewareWordIndex()
 		word := findDicewareWord(index, generateConfig.Lang)
@@ -43,34 +45,38 @@ func Generate(generateConfig GenerateConfig) error {
 		if err := exec.Command("sh", "-c", cmd).Run(); err != nil {
 			return err
 		}
-		fmt.Println("Password copied!!")
+		fmt.Println("Password copied!")
 	}
 
 	if generateConfig.Hide {
 		return nil
 	}
 
+	if words == "" {
+		fmt.Println("Unable to generate passphrase.")
+		return nil
+	}
+
 	fmt.Println("-------------------")
 	fmt.Println(words)
 	fmt.Println("-------------------")
 	return nil
 }
 
 func findDicewareWordIndex() string {
-	var number = ""
+	var number string
 	for j := 1; j <= 5; j++ {
 		number = number + strconv.FormatInt(throwDice(), 10)
 	}
 	return number
 }
 
 func throwDice() int64 {
-	var number int64 = 0
-
+	var number int64
 	for number == 0 {
 		nBig, err := rand.Int(rand.Reader, big.NewInt(7))
 		if err != nil {
-			panic(err)
+			panic(err) // TODO don't panic!
 		}
 		number = nBig.Int64()
 	}
@@ -79,20 +85,12 @@ func throwDice() int64 {
 }
 
 func findDicewareWord(number string, lang string) string {
-	file, err := os.Open("diceware_words_" + lang + "/" + number + ".txt")
-
+	word, err := wordsBox.FindString("diceware_words_" + lang + "/" + number + ".txt")
 	if err != nil {
 		return ""
 	}
-	defer file.Close()
 
-	scanner := bufio.NewScanner(file)
-
-	for scanner.Scan() {
-		word := scanner.Text()
-		t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
-		transformedWord, _, _ := transform.String(t, word)
-		return transformedWord
-	}
-	return ""
+	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
+	transformedWord, _, _ := transform.String(t, word)
+	return transformedWord
 }

go.mod

@@ -3,7 +3,7 @@ module diceware-cli
 go 1.12
 
 require (
+	github.com/gobuffalo/packr v1.30.1
 	github.com/spf13/cobra v0.0.5
-	github.com/spf13/viper v1.3.2
 	golang.org/x/text v0.3.0
 )

go.sum

@@ -4,14 +4,31 @@ github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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+github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
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+github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDePerRcY=
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@@ -21,7 +38,11 @@ github.com/pelletier/go-toml v1.2.0 h1:T5zMGML61Wp+FlcbWjRDT7yAxhJNAiPPLOFECq181
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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@@ -34,15 +55,30 @@ github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
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main.go

@@ -1,7 +1,12 @@
 package main
 
-import "diceware-cli/cmd"
+import (
+	"diceware-cli/cmd"
+
+	"github.com/gobuffalo/packr"
+)
 
 func main() {
-	cmd.Execute()
+	box := packr.NewBox("./words")
+	cmd.Execute(box)
 }