https://github.com/alixaxel/genex

Genex package for Go
https://github.com/alixaxel/genex

genex go golang regex regular-expression

Last synced: about 2 months ago
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Genex package for Go

• Host: GitHub
• URL: https://github.com/alixaxel/genex
• Owner: alixaxel
• License: mit
• Created: 2015-03-09T19:24:16.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2020-01-05T18:10:35.000Z (almost 5 years ago)
• Last Synced: 2024-10-11T20:14:36.344Z (2 months ago)
• Topics: genex, go, golang, regex, regular-expression
• Language: Go
• Homepage: https://namegrep.com/
• Size: 12.7 KB
• Stars: 77
• Watchers: 5
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

Awesome Lists containing this project

• awesome-go - genex - Count and expand Regular Expressions into all matching Strings. (Text Processing / Regular Expressions)
• awesome-go - genex - Genex package for Go - ★ 48 (Text Processing)
• awesome-go-extra - genex - 03-09T19:24:16Z|2020-01-05T18:10:35Z| (Bot Building / Regular Expressions)

README

        
# genex [![GoDoc](https://godoc.org/github.com/alixaxel/genex?status.svg)](https://godoc.org/github.com/alixaxel/genex) [![GoCover](http://gocover.io/_badge/github.com/alixaxel/genex)](http://gocover.io/github.com/alixaxel/genex) [![Go Report Card](https://goreportcard.com/badge/github.com/alixaxel/genex)](https://goreportcard.com/report/github.com/alixaxel/genex)

Genex package for Go

Easy and efficient package to expand any given regex into all the possible strings that it can match.

This is the code that powers [namegrep](https://namegrep.com/).

## Usage

```go

package main

import (

    "fmt"

    "regexp/syntax"

    "github.com/alixaxel/genex"

)

func main() {

    charset, _ := syntax.Parse(`[0-9a-z]`, syntax.Perl)

    if input, err := syntax.Parse(`(foo|bar|baz){1,2}\d`, syntax.Perl); err == nil {

    	fmt.Println("Count:", genex.Count(input, charset, 3))

    	genex.Generate(input, charset, 3, func(output string) {

    		fmt.Println("[*]", output)

    	})

    }

}

```

## Output

```

Count: 120

[*] foo0

[*] ...

[*] foo9

[*] foofoo0

[*] ...

[*] foofoo9

[*] foobar0

[*] ...

[*] foobar9

[*] foobaz0

[*] ...

[*] foobaz9

[*] bar0

[*] ...

[*] bar9

[*] barfoo0

[*] ...

[*] barfoo9

[*] barbar0

[*] ...

[*] barbar9

[*] barbaz0

[*] ...

[*] barbaz9

[*] baz0

[*] ...

[*] baz9

[*] bazfoo0

[*] ...

[*] bazfoo9

[*] bazbar0

[*] ...

[*] bazbar9

[*] bazbaz0

[*] ...

[*] bazbaz9

```

## Install

	go get github.com/alixaxel/genex

## License

MIT