reggen

README

Reg-gen

This package generates strings based on regular expressions

Try it here

Usage

package main

import (
	"fmt"

	"github.com/lucasjones/reggen"
)

func main() {
	// generate a single string
	str, err := reggen.Generate("^[a-z]{5,10}@[a-z]{5,10}\\.(com|net|org)$", 10)
	if err != nil {
		panic(err)
	}
	fmt.Println(str)

	// create a reusable generator
	g, err := reggen.NewGenerator("[01]{5}")
	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 output:

bxnpubwc@kwrdbvjic.com
11000
01010
01100
01111
01001

Documentation

Overview

Package reggen generates text based on regex definitions

Index

• func Generate(regex string, limit int) (string, error)
• type Generator
  • func NewGenerator(regex string) (*Generator, error)
  • func (g *Generator) Generate(limit int) string
  • func (gen *Generator) SetSeed(seed int64)

Functions

func Generate

func Generate(regex string, limit int) (string, error)

Types

type Generator

type Generator struct {
	// contains filtered or unexported fields
}

func NewGenerator

func NewGenerator(regex string) (*Generator, error)

create a new generator

func (*Generator) Generate

func (g *Generator) Generate(limit int) string

limit 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

func (*Generator) SetSeed

func (gen *Generator) SetSeed(seed int64)