befika / strGen

Random string generator based on the given reqular expression

Random String Generator

This package helps to generates strings based on the given regular expressions and limit

Usage

package main

import (
	"fmt"

	"github.com/befika/strGen"
)

func main() {
	// generate a single string
	str, err := reggen.Generate("[-+]?[0-9]{1,16}[.][0-9]{1,6}", 10)
	if err != nil {
		panic(err)
	}
	fmt.Println(str)

	// create a reusable generator
	g, err := reggen.NewGenerator("[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{8}")
	if err != nil {
		panic(err)
	}

	for i := 0; i < 5; i++ {
		// 10 is the maximum number of times star, range or plus should repeat
		// i.e. [0-9]+ will generate at most 10 characters if this is set to 10
		fmt.Println(g.Generate(10))
	}
}

//Sample out put 1

pattern:= "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{8}"
/*
	0e3ec3cf-fc85-e4e5-0e61f52b
	db200804-d124-29a6-5554e9d8
	927480e8-f2ed-8ab6-6ef94518
	1fdece34-7eac-e85e-de8609b7
	137c9b74-42ba-4552-1c04909e
*/

//Sample out put 2

pattern:= "[-+]?[0-9]{1,16}[.][0-9]{1,6}"
/*
	+3962810.775
	-87.637623
	+412841024.72902
	80326766.193
*/


//Sample out put 3

pattern:= "(1[0-2]|0[1-9])(:[0-5][0-9]){2} (A|P)M"
/*
	10:30:55 AM
	11:08:12 AM
	11:55:58 AM
	10:58:38 PM
	08:01:47 AM
*/