69 lines
2 KiB
Go
69 lines
2 KiB
Go
package main
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import (
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"code.icb4dc0.de/prskr/go-pwgen"
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"flag"
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"fmt"
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"log"
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"os"
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"strings"
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)
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// although there might be terminals where it's less, let's be pessimistic
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const tabWidth = 8
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var (
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length uint
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count int
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letters uint
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lowercase uint
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uppercase uint
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digits uint
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specials uint
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specialsAlphabet string
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)
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func main() {
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flags := flag.NewFlagSet("pwgen", flag.ExitOnError)
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flags.IntVar(&count, "count", 20, "Number of passwords to generate")
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flags.UintVar(&length, "length", 20, "Length of each password to generate")
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flags.UintVar(&letters, "letters", 0, "Number of letters to include at least")
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flags.UintVar(&lowercase, "lowercase", 3, "Number of lowercase characters to include at least")
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flags.UintVar(&uppercase, "uppercase", 3, "Number of uppercase characters to include at least")
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flags.UintVar(&digits, "digits", 3, "Number of digits to include at least")
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flags.UintVar(&specials, "specials", 0, "Number of special characters to include at least")
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flags.StringVar(&specialsAlphabet, "specials-alphabet", pwgen.DefaultSpecialsAlphabet, "Special characters to include as special characters")
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if err := flags.Parse(os.Args[1:]); err != nil {
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log.Fatalf("Failed to parse arguments: %v", err)
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}
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terminalWidth := getWidth()
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passwordsPerRow := int(terminalWidth / (length + tabWidth))
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builder := strings.Builder{}
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for i := 0; i < count; i += passwordsPerRow {
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for j := 0; j < passwordsPerRow && i+j < count; j++ {
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pw, err := pwgen.Generate(
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pwgen.WithLength(length),
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pwgen.WithLetters(letters),
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pwgen.WithLowercase(lowercase),
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pwgen.WithUppercase(uppercase),
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pwgen.WithDigits(digits),
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pwgen.WithSpecials(specials),
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pwgen.WithSpecialsAlphabet(specialsAlphabet),
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)
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if err != nil {
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log.Fatalf("Error occurred generating password: %v", err)
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}
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builder.WriteString(pw)
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builder.WriteRune('\t')
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}
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fmt.Println(strings.TrimSuffix(builder.String(), "\t"))
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builder.Reset()
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}
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}
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