• Stars
    star
    77
  • Rank 416,138 (Top 9 %)
  • Language
    Go
  • License
    MIT License
  • Created over 9 years ago
  • Updated almost 5 years ago

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Repository Details

Genex package for Go

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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.

Usage

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