first commit

go.mod

@@ -0,0 +1,8 @@
+module Bollos00/passwgen-go
+
+go 1.17
+
+require (
+    "github.com/ogier/pflag" v0.0.1
+
+)

go.sum

@@ -0,0 +1,2 @@
+github.com/ogier/pflag v0.0.1 h1:RW6JSWSu/RkSatfcLtogGfFgpim5p7ARQ10ECk5O750=
+github.com/ogier/pflag v0.0.1/go.mod h1:zkFki7tvTa0tafRvTBIZTvzYyAu6kQhPZFnshFFPE+g=

main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"Bollos00/passwgen-go/passwgen"
+	"fmt"
+
+	flag "github.com/ogier/pflag"
+)
+
+func Unused(vals ...interface{}) {
+	for _, val := range vals {
+		_ = val
+	}
+}
+
+func FindItemInSlice(slice []byte, val byte) bool {
+	for _, v := range slice {
+		if v == val {
+			return true
+		}
+	}
+	return false
+}
+
+func initFlags() {
+
+	var characters *string = flag.StringP("characters", "c", "aA1!", "Type of characters on the password")
+	var min *int = flag.IntP("min", "m", 8, "Minimum size of the password")
+	var max *int = flag.IntP("max", "M", 16, "Maximum size of the password")
+
+	flag.Parse()
+
+	pssgenType := passwgen.PasswGenCharType(0)
+
+	for _, v := range []byte(*characters) {
+
+		if FindItemInSlice(passwgen.NumeralChars(), v) {
+			pssgenType = pssgenType | passwgen.Numeral
+		} else if FindItemInSlice(passwgen.LowerLetterChars(), v) {
+			pssgenType = pssgenType | passwgen.LowerLetter
+		} else if FindItemInSlice(passwgen.UpperLetterChars(), v) {
+			pssgenType = pssgenType | passwgen.UpperLetter
+		} else if FindItemInSlice(passwgen.SpecialLetterChars(), v) {
+			pssgenType = pssgenType | passwgen.Special
+		}
+	}
+	passgen_instance := passwgen.PasswGen{
+		CharactersType: pssgenType,
+		MinSize:        *min,
+		MaxSize:        *max,
+	}
+	fmt.Println(passgen_instance)
+
+	Unused(characters, min, max, passgen_instance, pssgenType)
+
+}
+
+func main() {
+
+	initFlags()
+}

passwgen/passwgen.go

@@ -0,0 +1,61 @@
+package passwgen
+
+import "fmt"
+
+type PasswGenCharType int
+
+const (
+	None        PasswGenCharType = 0
+	Numeral     PasswGenCharType = 1
+	UpperLetter PasswGenCharType = 2
+	LowerLetter PasswGenCharType = 4
+	Special     PasswGenCharType = 8
+)
+
+func NumeralChars() []byte {
+	return []byte{
+		'0', '1', '2', '3', '4',
+		'5', '6', '7', '8', '9'}
+}
+
+func LowerLetterChars() []byte {
+	return []byte{
+		'a', 'b', 'c', 'd', 'e',
+		'f', 'g', 'h', 'i', 'j',
+		'k', 'l', 'm', 'n', 'o',
+		'p', 'q', 'r', 's', 't',
+		'u', 'v', 'w', 'x', 'y',
+		'z'}
+}
+
+func UpperLetterChars() []byte {
+
+	return []byte{
+		'A', 'B', 'C', 'D', 'E',
+		'F', 'G', 'H', 'I', 'J',
+		'K', 'L', 'M', 'N', 'O',
+		'P', 'Q', 'R', 'S', 'T',
+		'U', 'V', 'W', 'X', 'Y',
+		'Z'}
+}
+
+func SpecialLetterChars() []byte {
+	return []byte{
+		'!', '"', '#', '$', '%',
+		'&', '\'', '(', ')', '*',
+		'+', ',', '-', '.', '/',
+		':', ';', '<', '=', '>',
+		'?', '@', '[', '\\', ']',
+		'^', '_', '`', '{', '|',
+		'}', '~', ' '}
+}
+
+type PasswGen struct {
+	CharactersType PasswGenCharType
+	MinSize        int
+	MaxSize        int
+}
+
+func main() {
+	fmt.Printf("%v\n", SpecialLetterChars())
+}